JB/T 9076-1999 Technical requirements for reciprocating cryogenic liquid pumps
Some standard content:
[CS230A0
Machinery Industry Standard of the People's Republic of China
JB/T9076-1999
Technical Conditions for Reciprocating Cryogenic Liquid Pumps
Specifications for reciprocating cryogenic liquid pumps1999-07-[2] Issued
National Bureau of Machinery Industry
2000-01-01 Implementation
JB9076-1999
This standard is the final revision of the selected version of ZBJ7601389 "Technical Conditions for Reciprocating Cryogenic Liquid Pumps". During the revision, the original standard was edited and the main technical contents were changed. This standard replaces 2J76013-9 from the date of implementation. This standard is proposed and approved by the Technical Committee for Standardization of Gas Separation and Chemical Equipment. The drafting unit of this standard: Hangzhou Hydrogen Generator Group Co., Ltd. The main drafters of this standard are Hu Fei and Han Peng. This standard was first published in April 1988.
Mechanical Industry Standard of the People's Republic of China
Technical Conditions for Reciprocating Cryogenic Liquid Pumps
Speciientions for reciprocating eryngeic liquid pumps JI/T9076—1999
This standard specifies the installation requirements, test methods and inspection rules, marking, packaging, transportation and storage of air separation equipment in cryogenic liquid systems (hereinafter referred to as "air separation equipment"). This standard is applicable to liquid oxygen, liquid oxygen, liquid oxygen, liquid oxygen, and liquid oxygen, with an outlet pressure not exceeding 35MPa. Note: The texts contained in the following standards are deemed as reference standards by reference in this standard. When this standard is published, the versions shown are valid. All standard parts will be revised, and the parties using this standard should discuss the possibility of using the latest version of the following standards. GB/T31811993 Paint film color standard
Basis for formulating machine perturbation standards
GB/T6075—19BS1
Engineering method for determining the sound power level of the whole system sound insulation GBT9069—198K
JB4730—1994
JB,T6896.[993
Non-destructive testing of pressure vessels
Surface cleanliness of air separation equipment
Regulations on Technical Supervision of Safety of Pressure Vessels 3 Technical requirements
3.1 The equipment shall comply with the provisions of this standard and be manufactured in accordance with the drawings and technical documents approved through the prescribed procedures or the requirements of the contract. 3.2 The performance of the system (volume, discharge pressure, suction pressure, reciprocating speed and electric power, etc.) shall comply with the requirements of the drawings. 3.3 When the discharge pressure of the pump increases by 105% of the rated discharge stop force value, the pump should be able to work and operate reliably. 3.4 When the external environment is full, the temperature of the lubricating oil in the pump transmission box shall not exceed 3.5 There should be no dead corners in the pump structure that are prone to air blockage, and the discharge port of the pump should not be arranged downward. 3.6 The spare parts and components have good interchangeability: 3.7 The operation of the pump should be stable under the rated reciprocating number, and the vibration of the bearing part of the transmission box should be less than or equal to 100μ. 3.8 The noise level (power consumption) should not exceed 85dB (A) 3.9 The life of the components should not be less than the specified attenuation level. National Machinery Industry Separation [999-07-12 approved 2000-01-01 implementation
Maximum Part Name
Discharge Pressure Range
e22MPa
>22MPa
JB/T9076-1999
Table Component Life
Live seal ring, guide ring, sealing ring, suction and discharge time 4000
Push-fit return to current setting
30 The system should have the ability to operate safely and efficiently, and the reliability effectiveness A (1) of continuous operation is 99%. Reliability effectiveness A () is calculated according to formula (1):
In the formula: A (1). - Reliability effectiveness, % MTEF
MTBF+MTTR
- Mean time between failures, h;
MTTR, mean time to repair, h.
x1009%
3.11 The friction surface of the pump. The sealing surface should not have defects such as bumps, notches, burrs, bumps, scratches, etc. that affect the quality. (1)
31Z Castings are not allowed to have defects that affect the strength, sealing and performance of the parts. For repairable defects, welding or other methods are allowed to be used for repair, and the repair must comply with the provisions of the sample or technical specifications: 3.13 Castings and welded parts that withstand a pressure greater than 0.1MPa shall be subjected to a water pressure and temperature test, and the test force shall be 1.5 times the operating pressure, maintained for 30 minutes, and no leakage shall be allowed.
3.14 The design and manufacture of pressure vessels must comply with the provisions of the "Technical Supervision and Inspection Regulations for Pressure Vessels" and B4730. 315 The main materials used to manufacture pumps must comply with the provisions of material standards. 3.16 The dynamic seal of the suction and discharge valves shall be checked for oil leakage and maintained for 10 minutes without slipping. There shall be no reverse gas flow during the gas test. 3.1 The assembly room shall comply with the requirements of the drawings. 3.18 The pump shall be clean and no visible impurities are allowed. The cleanliness of all parts in contact with oxygen shall comply with the provisions of B/: The surfaces and related parts in contact with other media shall be degreased and treated. Wipe the tested surface with a white, clean filter or cloth. There shall be no oil marks on the paper or silk cloth. 3.19 The scope of supply of each pump includes: a) Completely assembled pump (including reverse reduction device, motor, anchor bolts): b) Special tools: c) Spare parts and wearing parts: d) Random documents.
3.26 Under the condition that the user complies with the provisions of the product use and maintenance instructions, the product shall be used for 18 months from the date of shipment from the manufacturer and the service life shall not exceed 12 months. If the product is damaged or cannot work normally due to the manufacturing quality, the manufacturer shall be responsible for replacing or repairing it. 4 Test methods and inspection rules
4.1 Test methods
4.1.1 The flow measurement adopts the gas bottle measurement method or other methods. In case of disputes, the gas bottle measurement method shall be used for arbitration: 4.1.1.1 Gas bottle measurement method
After the discharge pressure of the pump is stable, the low-temperature gas is fully vaporized in the vaporization curtain and filled into the measuring container. The filling time is recorded: , and the pressure, dynamic humidity, and pressure before and after filling in the container are measured. The flow rate of the pump is calculated by formula (2): 2
Where: α——Flow rate, Lih;
V, filling volume, t.;
P, final filling pressure, MPa
P, initial filling pressure, MPa;
—final filling temperature, K:
T,—initial filling temperature, K:
total measurement time, s;
JB/T 9076--[999
9=9699.48×
—coefficient, the volume occupied by the low-temperature liquid when it vaporizes into 0℃, 0.F01325MPa (absolute) gas, mz4, 1,1.2 Measuring instruments and precision
The volume of the measuring container is ±0.2%:
The accuracy of the positive force meter shall not exceed 1.5:
The degree of the excitation meter is ±0.2K:
The time is measured with a stopwatch.
4.1.2 Vibration measurement is in accordance with GBT9069 regulations
4.1.3 Vibration measurement is in accordance with GB665 regulations. The measurement position is the two bearing parts of the transmission box or its representative parts. 4.2 Inspection rules
The product can only leave the factory after being inspected and qualified by the quality inspection department of the manufacturer according to the product drawings and this standard. The inspection is divided into single inspection and factory inspection.
4.2.1 Type inspection
New product prototypes should undergo type inspection: For old products that are transferred to the factory for production or products with major design modifications, the first product should undergo type inspection: Generally, fatigue nitrogen is used as the low-temperature medium. Special circumstances require additional instructions and a 500-hour operation test. When the factory does not have low-temperature operation conditions, it is allowed to be carried out on site. The type inspection items are as follows: 4 Piston ring and guide ring wear measurement:
h) Vibration measurement,
Noise measurement:
d) Performance (flow, discharge pressure, suction pressure, motor power, reciprocating torque, etc.) measurement, 4.2.2 Factory inspection
Each pump should undergo factory inspection
4.1.2.1 Routine inspection is carried out according to product drawings and technical documents. 4.22.2 The transmission test is required to be free of any freight test, and the operation is required to be stable and there is no abnormal sound. 4.21.3. For the low temperature performance test, take out one unit when there are less than 4 units for every 4 units, and run it with low temperature medium for 4 hours. Measure the flow rate, discharge pressure, suction pressure, number of reciprocations, etc., and make a 5% overpressure test. There is no abnormal phenomenon after running for 10 minutes. 5. Marking, packaging, transportation and storage
5.1 The part of the pump outside the incubator needs to be painted black, and the color of the paint should meet the requirements of GB/T31$】 (except for PB09 acid blue liquid oxygen pump, other working media should be in accordance with the requirements of the drawings, and the paint should be firmly attached, the surface should be smooth, and the color should be consistent. American standard hall, 3
JB/T9076-1999www.bzxz.net
5.2 Every time there is a product nameplate fixed in a conspicuous position, the nameplate should be marked with the following contents: a) Model and name;
b) Manufacturer name:
) Performance parameters:
Discharge pressure, L/h;
Inlet pressure, MP
Discharge pressure, MPB;
In multiples, min:
Motor power, kw
d) Factory number:
Year and month of factory.
5.3 Before packing, the product shall be treated with rust prevention. The validity period of oil seal shall be not less than 12 months. S.3.1 The parts in contact with the working medium shall be properly degreased and sealed after explosion. 5.3.2 The transmission box [including the gearbox] shall be filled with the lubricating oil specified in the figure. 5.4 The packaging shall be solid to ensure safe transportation. The products mentioned in this box shall be stored in a warehouse or a place with a complete cover. During storage, they shall be inspected for rust prevention, mildew prevention and anti-rust.
5.5 Each pump should be accompanied by the following documents and packed in a plastic bag. Product certificate;
6) Product manual:
General drawing and component samples:
7) Packing list.
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