JB/T 10427-2004 General hydraulic system of wind turbine generator set
Some standard content:
Mechanical Industry Standard of the People's Republic of China
JB/T104272004
Generai hydraulic system of wind turbine generator systems2004-02-10Published
2004-06-01Implementation
National Development and Reform Commission of the People's Republic of ChinaPublished before the market
Specification and application documents
General requirements
Material requirements
Design and testing
No case.
Complete requirements,
Energy cost requirements.
..Working temperature..
Selection and control of various components, accessories and standard parts Manufacturing basis.
Basic requirements for maintenance
Installation, use and maintenance data
Acceptance data
Expansion torquewww.bzxz.net
Production requirements
Quality requirements
Precautions during use.
Quality of castings, forgings, welded parts and pipe fittings 5.1
Basic requirements
Requirements for joints with medical materials and pipe fittings
Requirements for joints
Requirements for welding, non-standard requirements, box welding.
Pipeline welding
China Industry and Trade.
General requirements
JB/T19427—2004
JBII:104272004
Tolerance requirements
Hydraulic heating elements,
Pressure bearings...
Installation base
System equipment center
Hydraulic system
Box device
Other accessories and requirements
Installation of pressure valve
Sea block
Prohibited materials
Tolerance requirements of pipe fittings
Saluan table
Some parts
Pipeline Fixing
Electrical wiring..
Basic requirements
Laying requirements
Control device
Passing protection and control equipment
Population control equipment
Valve control
Macro installation requirements of control device
National roads Mutual relationship
Same-drive control national roads..
Hydraulic pump station drawing requirements
Oil stability
Basic requirements
Coloring requirements
16 Test
Test basis,
Test requirements,
1 Packaging, transportation and storage
17.1 Packaging
17.． This standard is the first micro-determination
JB/T10427
non-standard size R/T1.1-2099 standard energy chemical production guide Part 1: Standard composition and compilation guidelines Add: The provisions of this standard are confirmed and the name of this standard belongs to the China Wind Power Equipment Industry Federation This standard is issued by the China Wind Power Equipment Industry Federation and the international standard technical support unit is: Xi'an Hangjiao Miji Engine (Jiaotuan) Co., Ltd. The main person in charge of the standard is: Scope
General hydraulic system of wind turbine generator sets
This standard specifies the general requirements for the hydraulic system of wind turbine generator sets. This standard is applicable to the hydraulic system of wind turbine generator sets 2 Normative referenced documents
JB/T10427-200^
The clauses in the following documents become the clauses of the standard through reference in this standard. All the documents used in the life of the people, all the revisions after the value is not included in the customer's design: the standard version is applicable to the ten small, however, the drum quality according to the standard down the parties to the research is the use of the latest version of these documents, all not noted the use of documents, the latest version of the general type of this standard GB.50 pressure device || tt || packaging storage drawing Dong you Zhi (/191200, eS10) (H/191 || tt || HT gas, flat 1 electric welding and gas control protection brand baking into the door of the original form and size CB/6 buried welding coal mixing groove basic form and size /5091 low flow delivery with rolling tube 09! -2001, cS 559.199 (H/4726.2 Electrical simplified medical symbols Part 2: Release symbols, limiting symbols and common symbols GB-2725.2-149816115:4617-2:1916:
GB/T4879 Rust-proof packaging
508 General design principles for cattle production and delivery (G583-999, eN3199VE00:199 (6414 items) Inch and machine city workers (B door 41419, V15862:19943 Lubricant, industrial oil lease related output (category) capital part: Japanese paper (hydraulic system) G3:T8162 Steel GB/8 52—19, ne; J53444:1994) (H1: 2552 Steel master mold tolerance Mechanical plus residual display B Electromechanical product packaging applicable technical conditions
3 Hydraulic pump station box public customer plate series
3-General requirements
3.1 Basic requirements
The design and manufacture of the pressure reduction system shall meet the following basic requirements: a) Safe and reliable operation
Positive belt:
e) Energy saving and efficiency Manufacturer:
Small;
Uliaotong
"Operation principle is simple, easy to operate, complete
Easy to maintain:
h) Design life requirement
Low cost service:
3.2 Material type requirements
The material used for the hydraulic components that transmit power should withstand the dynamic load for a long time. h) The guide should be made of optical hose or steel pipe: the standard should meet the requirements of GB81 and GB9. The soft tube should be made of the relevant provisions, and the ice can be used as a flexible arm connection: it is allowed to be used after the test to prove that it can ensure the tightness and can withstand the dynamic load of the weak kidney end connection. 3.3 Design rules || tt || 331 The proportion of the hydraulic system shall meet the requirements of the relevant US standards. 3.3.2 The hydraulic system has no timing specifications. Consider the following factors: 3) The components (cables, pipelines. Valves, the pressure distribution can be appropriate: to ensure the response time, action speed, and pressure during operation. The pressure wave in the rear component may cause damage: the control function and the safety system should be completely separated: the hydraulic system should be designed to ensure that the system is still in a safe state when there is no pressure or hydraulic failure; the cylinder (such as: wind wheel control mechanism, blade pitch mechanism) can only achieve its safety edge when the pressure is different, and the hydraulic system is designed! After the power supply fails, the unit can be kept in a safe state for at least 5 days: verify the unit's design and construction (liquid viscosity, cooling material, heating, etc.): F
Leak detection should not have a narrow impact on its function. If a leak is confirmed, it should be able to verify the emergency operation and control the heat six generator sets accordingly, such as the hydraulic cylinder moves in two directions under the action of the bearing, or the "hoop pressure loading" type: the pipeline design or "hoop pressure loading" type, consider the mutual operation between components and the internal or point forces acting on the pipes. 3.4 Design performance The technical agreement and (or: design task book) shall specify the following contents: rated power of the wind turbine: structural form and operation mode of the wind turbine: climate conditions in the system working area. Ambient temperature level around the system (temperature: -30:50℃: normal temperature: -20-40℃: low temperature: -30~40℃, temperature range and its variation range: installation position of hydraulic thermal insulation components, filter pressure pump station, liquid production platform and other independent equipment: d
for commercial use, flammable environment, external ring anti-dynamic (such as shock, vibration, etc.) high sea level (above), strict inspection of the initial area and the hundred precision waves: high 4, system design, manufacturing and use requirements under special circumstances such as non-standard performance, performance analysis and motion parameters of the oil test mechanism, installation method and special requirements (pressure maintenance, overpressure, synchronous tracking and dynamic F||tt ||Characteristics, etc.
Automation program and locking requirements of system operation:
X) System use and type:
1 Clearly define the number of users' power grids.
3.5 Safety requirements
31 System winding level design and sound test of various energy-generating effects, system dynamic design, component selection, application, matching and adjustment, etc. should be carried out in advance to ensure the safety of personnel and minimize equipment damage when an accident occurs: 3.5.2 System overvoltage protection device
3.5.3 The design and adjustment of the system should minimize the impact. The impact will not affect the normal operation of the equipment and cause danger. 3.5.4 The design of the system should consider the failure, loss of control (such as external power failure, etc.) and the prevention of loss of control and danger caused by the pressure support mechanism: 3.55 The quality of the components should be qualified, and the requirements of practical characteristics, technical integers and performance should be met. 3.56 The installation position of the components should be safe and convenient for operation and adjustment. 3.57 The operation and adjustment of the components should comply with the regulations of the manufacturer: 3.5.8 The system design should comply with the relevant safety and health regulations of GB/T=083. 3.5 Energy saving requirements
When designing the system, consider the system efficiency (it is advisable to select energy-saving components, energy-saving circuits, etc., so that the system's emission reduction is minimized. 3.7 Working temperature
3.7.1 The system's working oil overflow range should meet the requirements of optical properties and flushing liquid. JU/I104272G04
5.7.2 To ensure normal working humidity, the system should be based on the negative registration The heat exchange device is set up under certain conditions to effectively improve the heat exchange performance of the boiler and control the temperature within the range required by the regulations. Under normal circumstances, the suction oil temperature of the pressure system shall not exceed 6! , and the system should be able to work normally under the low temperature shock specified in the design
3.8 Pipeline flow
The recommended value of the liquid flow rate of the system pipeline is shown in Table 1.1
Set pipeline
Big sleeve provincial road
Same oil shoots
Talk about unique new road
3.9 Noise
Helu Road Generation Special
2.5 -· 6.3
When designing the system, measures to reduce noise should be considered, and the system noise reduction should meet the requirements of relevant standards. 3.10 Selection of various components, accessories, and standard parts should be based on the flow rate
310.1 All components, rotating components, sealing components, and fasteners in the system should meet the requirements of relevant production standards or the product drawings and technical documents approved by relevant departments. 3.10.2 The quality of purchased parts should meet the requirements of the relevant purchased parts production standards. Important purchased parts should be inspected and accepted according to performance requirements. 3.10.3
3.10.4 For storage, During transportation and system assembly, external parts that may cause rust, damage, deformation, etc. that may affect product quality shall not be installed and replaced.
3.10.5 For purchased parts with failed seals or contamination, the seals shall be replaced and the contaminants shall be disinfected. 3.11 Cleanliness control
3.1: Components. Auxiliary components shall be kept clean during the rough assembly of the system. 3.11.2 Eliminate the pressure cracks on the oil block, joints, metal joints, and internal holes of the oil block. 3.113 Steel plates and steel pipes shall be removed and shall comply with the provisions of 5.2b) of this standard. 3.114 The system should be cleaned according to the relevant process specifications, including joints, channels, passages (including forged core holes, sticky holes, etc.) and oil tanks, etc. (including forged core holes, sticky holes, etc.) and visual contamination (such as soft impurities, welding, etc.) is not allowed. 3.1.5 The system should be cleaned after assembly, and the flushing should comply with the relevant provisions of the standard. 3.11.6 In order to prevent system contamination, an open oil filter is installed, and a filter is installed in the system loop: the filter should be installed at the original power outlet. 3.11. The new oil injected into the system should be filtered and the quality should not be lower than the design requirements. 3.12 Control basis
The system renovation should comply with the agreement between the supply and demand parties, and should be in accordance with the drawings and technical documents approved by the standard procedures. 3.13 Basic requirements for maintenance
3.13.1 The components are located in easy-to-install places, with sufficient space to ensure convenient maintenance. 3.13.2 When disassembling or assembling components of the system, the work must not be lost, and the adjacent components and parts must not be removed. 3.133 Under the condition of full maintenance, the system pipeline should be as small as possible, and the pipeline should be conveniently located and installed, and it is not advisable to make unintelligent connections.
3.13≤The system should be equipped with necessary pressure measuring points, air supply points, working oil sampling points, adjustment ports and flushing ports. 3.13.5 The electrical wiring of the battery pressure device should be equipped with a commercial junction box. 3.14 Installation, use and maintenance information
The design unit should provide the user with the following information: system schematic diagram, including the number, name, specifications of the components, and detailed information of the manufacturer: a)
The system's electrical and mechanical control components operating time table: the system equipment installation diagram and other materials specified in the agreement: information sheet.
3.14.2 The design unit shall provide the user with a system description, which shall include the type, serial number and production period of the unit; main use, composition and main technical parameters of the hydraulic system; working principle and operating instructions of the hydraulic system; c) Normal operating conditions and requirements of the hydraulic system (such as 1. operating oil temperature range, cleanliness requirements of the fluid, oil requirements in the tank, type code and working viscosity range of the lubrication, injection requirements, etc.); e) Hydraulic system test methods, operation requirements and precautions: # Regular testing, maintenance test points, oil inlets, oil vents, oil sump, etc.; ) Common hydraulic system faults and troubleshooting methods, special parts and components maintenance methods; : Storage conditions and maintenance period of customer seals;
1) Detailed list of tools and vulnerable seals (excluding purchased seals). 3.15 Acceptance data
System assembly test outline and acceptance test technical documents shall be formulated by the design unit, manufacturing unit and design unit and shall at least include the following:
Experimental purpose, requirements, cases, methods, steps and notes and items: 5) Acceptance and record form
) Sampling and inspection report:
d System specific energy test and record form:
System pressure holding test record form
System static and dynamic performance test (maintenance, adjustment, synchronization, positioning and full accuracy, etc.): and Record table:) System standard, calibration and record table:
: System sound detection and record table,
3.0 Standard
3.16.1 Schematic diagram mark
3.6.1.1 The graphic symbols of components shall comply with the provisions of GBT472B.2: 31612 The measurement unit shall comply with the national statutory basic unit. The net 13 pressure actuator control is indicated by a simple line, and the name of the giant standard is 310: .4 Main line (such as power line, national parking bend, oil leakage line, etc.): and the pipeline of the continuous rolling dilute hot element high pressure injection pipeline and wall.
[Six system Components should be marked! Force setting value,
318.1.6 The inflatable material or component should be marked with the inflatable force. 3.1F.1.7 The flow control component should be marked with the flow setting value: 3.16.1.8 The electrical contacts and coils of the motor should be marked with codes 3.16.1.9 Each component should be numbered, and the components of the phase model should also be marked with the arrangement sequence number. 3.16.t.10 The hydraulic circuit of the hydraulic device should be divided by double dot-dash lines and marked with codes: 316.1.11 The connections between the various assembly components of the system should be marked with codes, 316.2 Equipment marking 3.16.2.1 The main pipelines of the pressure pipe, oil pipe and oil drain pipe are marked with "P", "△" and "". The pipelines of the hydraulic components are marked with the pipeline code. 3.16.2.2 System components: The marking code specified by the manufacturer. 3.16.2.3 The components of the operating device (such as pedal, electric control and components, etc.) and the pressure gauge should be marked with the function mark. 3.16.2.4 The outlet of the main pipeline of the pressure device (pressure pipeline, oil pipeline, oil pipeline, etc.) shall be painted with 10mm wide color ring paint to indicate the pipelines of different types. The package should comply with the requirements of the public section design. The outer surface of the main pipeline that is not replaced 1 is painted, and the color should correspond to the color ring. 3.16.2.5 The wiring on the hydraulic device should be marked with a small wire number. 16.2.6 The hydraulic device should be marked with a product nameplate, and the purchased components should be accompanied by a nameplate. 3.16.2.7: The concentrated pressure pump should be marked with a left-hand mark on the pump shaft. 3.16.3 Marking requirements
The marking on the hydraulic device should be clear, neat, and regular. The printing, deletion, pasting and binding of the extremely high-precision hydraulic oil shall not be affected by the loss of rights due to historical changes:
3.17 Tightening torque
The tightening torque of joints, plugs, components and fasteners shall comply with relevant specifications or manufacturers' regulations...4 Hydraulic oil
4. Basic requirements
For the hydraulic oil used, the type, characteristic parameters and compatibility of the hydraulic oil specified in the system should be considered when designing the system:
Metal materials, seals and non-metal materials in contact with the hydraulic oil in the system: a)
Protective composite materials and other liquids that may have a relationship with the system, such as lubricating fluid, treatment fluid, anti-screw information and maintenance fluid b)
! Materials in contact with the overflowing liquid, such as cables, wires, etc. 4.2 Quality requirements
The use of liquid oil in the system shall comply with the provisions of 763:2 and the provisions of relevant oil professional manufacturers, and the above requirements shall be consistent with the standards and specificity of the oil products.
4.3 Precautions during the use of oil
43.1 Within the specified temperature range of the system, the properties of the selected oil should be within the use conditions of the components: 4.3.2 Different types of hydraulic oils should not interfere with each other, and the same brand of hydraulic oils from different manufacturers cannot be mixed. When mixing, conduct a small sample mixing test to check whether there are physical and chemical changes in the components. 1.3.3 After use, the oil should be regularly inspected for physical and chemical changes and disinfected to see if the filter can continue to be used. Generally, it should be inspected once every 3 months, and the longest should not exceed 6 months: 4.4 Maintenance
Regularly inspect the viscosity, acidity, moisture, and other qualities of the oil in the system. If it does not meet the quality requirements, it should be replaced. 45 The supplier of hydraulic oil should provide the information on the labor and health requirements for personnel using hydraulic fire extinguishers, operating instructions, fire or gas and suffocation risks, and the degree of wave and twisting problems in the form of JB/T10427--2004
5 Quality of precision parts, forgings, welded parts and pipe fittings 5.1 Basic requirements
5.1.1 The material brand and the corresponding drawings shall comply with the provisions of the corresponding material standards 5.1.2 The chemical composition and mechanical properties of the metal materials shall comply with the provisions of the corresponding material standards 5.1.3 The parts shall comply with the requirements of GB76414. 5.1.4 The parts shall comply with the requirements of 0B/T12362 5.1.5 The welded parts shall comply with the requirements of G2T985. 5.2 Requirements for welded parts and pipe fittings
Welded parts and pipe fittings must meet the following requirements: a) The surface rust degree of the connecting parts (plates, profiles, etc.) shall not be lower than B grade, and the surface rust degree of the hydraulic pipe fittings shall not be lower than grade B;
Connecting parts and pipe fittings shall be derusted, welded in time after casting, and anti-rust treated after welding; the forming shape tolerance of the materials shall comply with the provisions of the corresponding standards; d) The surface roughness of the cross-section of the welded parts shall not be greater than 25ut; the end of the connecting parts shall not have any bulging, the surface shall be flush, and the perpendicularity tolerance with the pipe shaft shall be 1% of the outer diameter of the pipe; the welding groove of the connecting parts and pipe fittings shall be machined and comply with the provisions of R/985; S3 Welding joint form
The joint form of the connecting parts shall comply with the specifications of DT98SB/. 5.4 Welding requirements
The interface of pipeline welding should be within the square of the inner wall: 1. For pipelines with working pressure lower than 6.3Ma, the inner wall misalignment should not exceed 2mm: 1. For pipelines with working pressure higher than 6.2MFa, the inner wall misalignment should not exceed 10mm. 5.5 Filling boundary
For castings and forgings that do not affect the use and appearance, under the condition of ensuring the quality of use, it is allowed to be repaired according to relevant standards and regulations.
6 Welding requirements
6.E Basic requirements
6.1.1 The welding of welded parts and pipelines shall comply with the requirements of relevant technical specifications. 6.1.2 The tank and pipeline shall be tested or pressure tested according to relevant product standards. 6.2 Oil tank welding
6.2.1 The internal structure of the open oil tank shall be fully welded with a continuous coal chain. The height of the welded joint of the open ring oil tank should meet the relevant regulations. The welding height of the pressurized oil tank should meet the requirements of 150. 6.2.2 G.23 When the tank is re-welded after painting, the coating of the new inner wall should be prevented from falling off. 6.3 Pipeline welding 6.3.1 Steel pipes should be welded by argon blasting welding or arc welding, and arc welding should be used for sealing. 8.3.2 Pipeline double welding, the weld of the inner wall should be good. 8.3.3 Pipeline seam repair should be carried out according to the process, and the number of times the fuel chain is repaired in the part should not exceed 2 times. 634 When welding, the sealing ring in the welding heat affected area should be removed to avoid filter aging. 7 Processing quality 7.1 General requirements 11 The welding without maintenance requirements should be repaired and blunted. 712 The surface should not be rusted, pierced, dented, scratched and other defects I/T 10427--2C04
7.2 Tolerance requirements
For the machined parts without tolerance requirements specified in the sample, the size deviation, shape and position tolerance and crack accuracy shall be consistent with the grade specified by the industry.
When the system is running at the upper limit of the working oil temperature within the specified service life, all pipelines, components, detachable joints, and live connections shall be tightly sealed and there shall be no leakage of oil filters. 9 Hydraulic thermal components
9.1 Hydraulic start
9. When a single piece or a single pressure device is selected, its travel, load and load matching conditions shall be fully considered to prevent the case from being damaged in multiple situations: Abnormal curve
9.1.2 The installation of the hydraulic motor shall comply with the design drawings and the manufacturer's regulations. 9.1.2 When installing the hydraulic cylinder, if the structure allows, the oil outlet should be located at the front and the assembly should be able to release air automatically or reversely.
9.2 Hydraulic motor
9.2.1 The coupling type and installation between the hydraulic motor and the mechanical drive device shall comply with the manufacturer's regulations. 9.2.2 External rotating shaft The coupling and coupling should have a protective cover. 9.2.3 When using a hydraulic motor, the influence of its starting torque, stall torque, load change, load kinetic energy and low-speed characteristics should be considered.
9.3 Mounting base
The mounting base of the hydraulic actuator should have sufficient rigidity to ensure the normal operation of the actuator. 1 System equipment assembly
Hydraulic pump installation station
10.1.1 The form and installation requirements of the coupling between the hydraulic motor and the prime mover should comply with the manufacturer's regulations. The rotating auxiliary shaft of the external auxiliary motor should have a protective cover. 10.12
10.1.3 The mounting base of the pressure pump and the auxiliary motor should have sufficient flexibility to ensure that the oil inlet pipeline is always at full pressure during operation. The oil inlet pipeline should be short and straight, avoiding bends and changes, and within the specified range of requirements, the oil inlet pressure and other conditions of the system should comply with the manufacturer's regulations. 1.1.5 The pressure inlet is sealed and can be used without sucking in air. 10.1.6 The high pressure and flow rate of the pump should be equipped with a) rubber elastic compensation fittings for the inlet: b) the oil outlet should be connected to the pump outlet 1! Reverse connection of high pressure hose, pump installation and single vibration damping pad
10.2 Oil tank installation
10.2.1 Oil tank
1021.1 The design of the oil tank should meet the following requirements a) The nominal capacity of the oil tank should be compatible with the oil tank JH/T7938 stipulates: b) When the system is working normally, especially when the system is equipped with a cooler, the heat of the hydraulic oil should be fully dissipated. The slower the circulation speed, the easier it is to separate the air mixed in the oil and the heavier heat in the precipitated oil:) The oil in the oil tank! The oil selection port should be kept away from the strategy, and can be isolated by thick flow plates or other measures, but it cannot be close to the cleaning of the oil tank 1B/1:10427-2004
! Under normal circumstances: some solutions can be used to absorb the hydraulic pressure flowing from the system. 10.2.1.2 The material of the oil tank is carbon steel plate, and stainless steel is used for special oil tanks. 10.2.1.3 The structure of the oil tank meets the following requirements: The oil tank should have sufficient strength and rigidity to avoid large deformation after installing various components and expansion tanks: The oil tank should be higher than the installation surface by more than 150mm to allow for displacement, heat dissipation and heat dissipation: b) There should be enough support area to facilitate adjustment during assembly and installation using the user and the number of fasteners: The inside of the oil tank should be kept flat and less structural parts should be installed to eliminate internal scale: In order to clean the oil tank, the shape of the bottom of the oil tank should be able to discharge the hydraulic oil and set an effective outlet at the bottom. The holes on the cover, the manhole and the holes of other components can be welded or installed in the base position. The flange can be formed into a welded platform, which can be used as a barrier and can be used as a barrier! Improve the report. The average number of people passing through the tank wall is average. Let the whole seal be allowed.
10.2.2 Fuel tank accessories requirements
10.2.2.15
Heavy ticket fuel tank control diagram flushing liquid deflector particle elimination specification equipment, the open fuel tank should be replaced with an air filter and injection elimination, the air filter through the pool end should be consistent with the system accuracy requirements 10.2.2.2
The air sensor should be the maximum air level gauge. Its position is subject to the general historical phenomenon. A liquid level switch should be added to indicate the position of the liquid door when it is about to be cancelled. It is used to monitor and warn the high and low limits of the fuel tank.2.2.4 The oil tank should be equipped with an oil thermometer and an oil volume indicator to measure the filling liquid temperature. 22.5 The pressure-type weak separation type oil tank is equipped with three technical alarm devices, and the pressure-type inflatable type oil tank is equipped with gas oil sensor. The whole network and the sequence are designed and displayed.
103 Other accessories and requirements
10.3.1 The heat exchanger
system should be equipped with heating or cooling devices according to the standard use requirements, and the main requirements should be met. 2) The relative power of the heater should not exceed 1.7Wm3: b) The heater installed on the oil tank should be close to the lower limit liquid position of the oil tank: ) When using a heat exchange curtain: There should be a key temperature point for both the hydraulic oil and the cooling (or heating) medium: When using a heat exchange curtain, an automatic temperature control device can be used to keep the temperature of the hydraulic fluid within the correct temperature range: e: The user should use the cooling medium specified by the manufacturer. The bed source is very unsanitary, the water quality is pathogenic, the water volume is not, the manufacturer's heat:
When using the air cooler, the intake and exhaust roads must be blocked: 133.2 Oil filter
103.2.1 In order to remove harmful secretions from the liquid oil, a filter with a concentration point and system performance requirements must be met.
10.3.2.2 When the filter element needs to be replaced, the system should indicate clearly when the system is replaced without stopping and the drive element is replaced, which meets the certain production requirements. 10 32.3
10.32.4 If the pressure is too high, an oil suction filter can be installed according to the needs of the instrument. The mesh bypass type is used. The capacity of the suction filter should be selected according to the inlet pressure of the installation system. The deviation of 10.1.4 10.3.2.5 If a permeable oil filter is used, the residual oil should be prevented from falling into the liquid market during maintenance and use. "C.3.26 When using a filter, the rated flow rate does not meet the actual minimum injection volume: 0.3.27 For the continuous operation of the system, the oil circulation filter system should be independent of the oil circulation system. 10.3.3 Accumulator
10331 Some optional equipment should be used to cut off the roller element of the accumulator for air, maintenance or long-term shutdown.
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