JB/T 5262-1991 Technical Specifications for Steam Turbine Oil Purification Equipment JB/T5262-1991 Standard Download Decompression Password: www.bzxz.net

Subject content and scope of application
Machinery Industry Standard of the People's Republic of China
Technical conditions for steam turbine oil purification equipment
This standard specifies the basic requirements for steam turbine oil purification equipment. This standard is applicable to the design, manufacture and acceptance of steam turbine oil purification equipment. 2 Reference standards
GJB380.1 General requirements and cleaning methods for sampling containersGJB380.2 Methods for collecting liquid samples on system pipelinesGJB380.5 Determination of solid particle contamination of working fluid using an automatic particle counterGJB380.6 Determination of solid particle contamination of working fluid using a microscope counting methodGJB380.7 Format of contamination test analysis reportJB4058
JB2862
3 Terms
Steam turbine cleanliness standards
Steam turbine packaging technical conditions
JB/TS262-91
3.1 Filtration efficiency; the percentage value of the number of particles of a certain size remaining on the filter element in a unit volume of oil to the number of particles of the same size in a unit volume of oil before filtration.
3.2 Nominal filtration degree: the minimum diameter of particles retained on the filter element when the filtration efficiency is above 95%. 3.3 Filter element limit pressure difference: The difference in oil pressure between upstream and downstream when the filter element is saturated with dirt. 4 Product model
4.1 The model of the oil purification device generally consists of two parts, separated by a horizontal line in the middle. YJ
Purification flow (L/h)
Oil purification device model
The first part indicates the type. The capital Chinese pinyin letter YJ represents the turbine oil purification device. The second part indicates the purification flow, represented by Arabic numerals, in L/h.
5 Technical requirements
5.1 Performance requirements
5.1.1-The oil purification device should be able to operate continuously, and its purified oil volume per hour shall not be less than 10% of the total oil volume of the system. 5.1.2 The purification accuracy shall meet the following indicators: Approved by the Ministry of Machinery and Electronics Industry in 1991--0701 90
Implemented in 1992-0701bzxZ.net
JB/T5262-91
a. The water content in the purified oil shall not be greater than 0.05%; b. The pollution level of the purified oil sample shall not be higher than the 17/14 level specified in Appendix A. 5.1.3 The oil purification device shall have high and low oil level alarms and extreme pressure difference alarms, and have corresponding automatic control. 5.1.4 The oil purification device shall be equipped with a sampling port to facilitate oil sample analysis. 5.1.5 The device shall be equipped with a smoke exhaust fan.
5.2 Appearance requirements
5.2.1 The outer surface of the oil purification device body shall be free of unevenness, sharp edges and burrs, and the welds shall be smooth and flat. 5.2.2 All standard parts have an anti-corrosion layer, and the anti-corrosion layer is not allowed to peel off. 5.3 Cleanliness requirements inside the box
5.3.1 Before spraying the paint on the inner surface of the box, the shot blasting (or pickling, phosphating) should meet the cleanliness level 1 standard for welded finished products in JB4058. 5.3.2 The inner surface of the box should be strictly constructed according to the corresponding process of the paint, and the paint layer should be bright in color, smooth and uniform, firmly bonded, without any peeling or shedding, and the paint layer should not be allowed to carry any debris. 5.3.3 After spraying the paint, the box should be cleaned and no impurities should remain. 5.4 Cleanliness requirements for fine filter tank
5.4.1 The surface of the tank should have an anti-corrosion layer, which should be uniform without any peeling or shedding. 5.4.2 The tank should be cleaned and rubbed with a white cloth without discoloration. 5.5 Before welding, each oil pipeline should be pickled and phosphated, and a layer of anti-rust turbine oil should be sprayed on the pipe. No other impurities should be present. It is forbidden to use sandblasting to clean the inner surface of the oil pipeline.
5.6 All oil-passing valves should be dismantled, cleaned, and sealed. 5.7 In addition to the above-mentioned requirements, the cleanliness of each set of oil purification equipment shall comply with JB4058. 5.8 After the parts of the oil purification device meet the above-mentioned cleanliness standards, all loose flanges should be equipped with asbestos rubber pads and flange covers. All threaded loose ends are equipped with asbestos rubber pads and screw plugs, and other loose ends are covered with plastic plugs. 5.9 Technical requirements for filter elements
The surface of the sedimentation net should be tight and flat, and it should be firmly combined when it has hydrophobic coating. 5.9.1
The bag filter should be free of residual welding slag, welding particles, burrs, and flash, and the welding joints should not be cracked. 5.9.2
The appearance of the filter cloth bag is complete and free of defects.
5.9.4 Basic technical requirements for filter elements
The appearance of the filter element is not allowed to have visual defects.
5.9.4.2 The filter element is tested for single pass according to the filter material filtration degree. When the filtration efficiency is above 95%, the nominal filtration degree is 10μm. 5.10 Sealing requirements
5.10.1 The welds of all oil-passing parts should be subjected to color inspection or kerosene penetration inspection. 5.10.2 The assembly seal of the fine filter tank is tested for airtightness at 1.5 times the working pressure, and the time shall not be less than 30 minutes. 5.11 The smoke exhaust fan runs smoothly when powered on, and the noise is lower than 90dB. The traction motor of the smoke exhaust fan must use an explosion-proof motor. 5.12 The distribution cabinet circuit is fixed and reliable, without bare wires, and short-circuit discharge is strictly prevented. 6 Testing and acceptance
6.1 The manufacture of oil purification equipment shall comply with the product drawings and relevant technical documents and technical standards proposed by the technical department, and shall be qualified after inspection. A product certificate of conformity must be attached when leaving the factory.
6.2According to the relevant technical conditions of the filter element, the newly modified filter element (including filter material, structure, and key process changes) must be tested according to the development test methods in the relevant standards. The above test reports should be attached to the first batch of new modified filter elements. 6.3 The newly modified filter cloth should be subjected to corresponding comparative tests with the original cloth. 6.4 The paint resistance of new brands must be tested on larger areas and more complex parts. 6.56.2, 6.3, and 6.4 can only be mass-produced after the three tests are qualified. 91
JB/T5262—91
6.6The contamination degree of purified oil samples shall be calibrated according to Appendix A; oil sample collection shall be in accordance with GJB380.2; oil sampler shall be in accordance with GJB380.1; oil sample determination shall be in accordance with GJB380.5 or GJB380.6; test report shall be in accordance with GJB380.7. Factory delivery, marking and packaging
The oil purification device shall have a fixed nameplate when it leaves the factory, including the model, name, main technical performance, factory number and factory date. 7.1
7.2The oil purification device shall be accompanied by the following documents when it leaves the factory: description of the oil purification device;
appearance, installation diagram and system diagram of the oil purification device; supply list of the oil purification device;
factory certificate of oil purification device.
7.3In addition to the complete set, a set of random spare parts shall be provided for the vulnerable parts. 7.4
A set of special random tools shall be provided at random.
The packaging of the oil purification device shall comply with JB2862. Non-metallic parts such as filter elements and cloth bags shall be properly packaged. It is strictly forbidden to mix with metal parts. Bags7.5
Filters, sedimentation nets, etc. shall also be packaged separately from the box. 7.6 If the oil purification device is found to be damaged or malfunctioning due to poor manufacturing quality within 18 months from the date of delivery, the manufacturer shall repair or replace the parts free of charge. 92
For pollution level codes, see Table A1.
Level code
JB/T5262—91
Pollution level code
(Supplement)
Each side rise
>15μm
JB/T.5262—91
Additional instructions:
This standard was proposed and managed by the Shanghai Power Generation Equipment Complete Design Institute of the Ministry of Machinery and Electronics Industry. This standard was drafted by the Shanghai Power Generation Equipment Complete Design Institute and Beijing Heavy Electric Motor Factory. The main drafters of this standard are Shu Shanxin and Fang Chonghua. 94
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