This standard includes all technical requirements and test methods of the test specifications of the German Delimon Company. In addition, according to the actual domestic situation, the assessment items such as cleanliness and life have been added, and the corresponding test methods have been added. This standard specifies the model, basic parameters and dimensions, technical requirements, test methods, inspection rules and signs, labels and packaging of the differential pressure switch 40 MPa (hereinafter referred to as the differential pressure switch). This standard is applicable to the differential pressure switch in the dual-line dry oil centralized lubrication system with a nominal pressure of 40 MPa. JB/T 8465-1996 Differential pressure switch 40MPa JB/T8465-1996 standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
JB/T 8465-96
Differential Pressure Switch
1996-09-(3)
199·07-01
Ministry of Machinery Industry of the People's Republic of China
JB/18465-96
This standard includes all technical requirements and test methods of the test specifications of Dewen Daili Meng Company. In addition, according to the actual situation in China, the cleanliness and other assessment items are added, and the corresponding test methods are added. Four safety independent machines were studied and proposed and unified. The originator of this standard: Shanghai Runjiang Fen Factory The main initiator of this standard: Shen Lizhong.
1 Scope
Machinery Industry Standards of the People's Republic of China
Differential Pressure Switch
JB/T8465-96
Technical standard specifies the model, basic data and dimensions, technical requirements, test methods, inspection rules and machine markings, labels, etc. of differential pressure switches with a pressure difference of more than 4MP. This standard applies For the lubrication system of the double-tenth specification with a nominal pressure of OMTa, the referenced standards are used as references in this standard. The text contained in the underlined standards constitutes the binding of the vehicle label. When the standard is published, the text shown must be valid. All standards are subject to revision, so the parties using this standard should explore the possibility of using the latest version of the standard. GB498-87
ZJC800387
General classification of lubricating products and lubricating equipment
Bean and Yuanniu logo, he, transport box storage specifications, basic parameters and dimensions
3.2 Production parameters
Transmission pressure: 5MPa
Positive force level code: 10MPa
Pressure difference can be closed
Pressure difference should comply with the provisions of Table 1 Table 1
YCK-MS
Nominal pressure
3.3 Dimensions
Applicable medium
According to the slip solution
GB 458
The dimensions of the positive differential switch are shown in Figure 1.Www.bzxZ.net
Approved by the Ministry of Machinery Industry in 1996-u9-03
-- 500
The maximum voltage of the switch is K
Applicable ambient temperature
20~%U
[997-0T-01 Practice
4 Technical requirements
4.1 Installation and operation
10/T$465-
[External dimensions
The terminal switch and the lower switch body should be fixed at the bottom. No relative movement is allowed. The terminal switch is normally adjusted at the upper and lower points. The micro-position of the lower point,
4. 2 The pressure relief switch is made at 4.~5.5MPa. 5 The differential switch is under 3mPa, and its leakage for 3nmin shall not exceed 4.4 The external seal is under 40Pa pressure, and there is no leakage at the external parts. 4.5 The internal quality of the differential switch is high. 4.6 The pressure relief switch should be used for at least 4000 times. Under 2MPm pressure, when the differential switch is under full pressure for 3min, it is regarded as the service limit of the pressure relief switch. Test method 5.1 Test medium The test medium of the differential switch is N6 mechanical oil (except for the test medium) 5.2 Test system principle The principle of the differential test system is shown in Figure 2. 2
S. Installation air inspection and inspection consultation
/8465-96
"H's slide: 2-3: 5-change: 1-place: 5 I test the principle of the differential pressure switch
Gan inspects the normal position of the switch body on the differential pressure switch, and its requirements should meet the requirements of 4.1. 5. 4 Pressure differential test
If the seal is active and the interface is at the interface, when it is about ~.Mfang, the first point should be connected and the signal should be transmitted, and the seal rate d should be connected, and the delay should be increased. When the pressure rises to 4-5MPa, the second contact of the pressure switch should be connected and the signal should be transmitted.
3 Internal sealing test
The seal pressure is opened and the b, d connection is opened! Add light to the interface to 25MPa, and the leakage of the door should be as specified in 4.5.5.5.6. Seal the interface, and when the pressure rises to 40MPa, perform mlr carefully, visually check the external seals, and see if there is any leakage. Then open the seal and press the mouth, and do the same test at the joint. 5. After the full inspection, the upper difference can be disassembled, and all the new zero-cow parts are finally purified. The petroleum aldehyde book after the flushing has been dried at a temperature of 120 s0im and has been sent to the filter at a fixed speed, and then the filter paper is taken out of the box with good temperature. For internal use, take the filter certificate of the same person and the value of the protection value after the wave is passed, and the value is consistent with the standard of 4.5.
5.8 Energy test
The test has been completed on the test bench of the thread sliding system. The test medium is a grease with a strength of not more than 265(35:15g>L/1mIn: the old switch is at a frequency of 1/61H2, and the signal is sent 4(40m times. Then carry out the sealing test as described in 5.5. The true Jmin internal leakage should not be greater than ul. Inspection specification sword
6. "Out" Laden
Yu Difference from the relevant factory inspection according to 5. 3, 5. 4, 5.5 and 5. 6. 6.2 Type inspection
62.1 In any of the following cases, the type inspection shall be carried out in reverse order: a) during the first trial design and appraisal; b) when the material, process or process have changed, which may affect the product performance; c) when the normal production is completed.
JB/T 8465-96
.2.2 The number of products to be inspected and tested shall be taken from the qualified products at the factory each time. 6.2.3 Type inspection shall be carried out in accordance with the provisions of Chapter 6.3 Determination
If there are any unqualified products in the type inspection, the test shall be doubled. If there are still unqualified products, they shall be judged as unqualified products. Marking, labeling and packaging
Marking of the switch:. Labeling and packaging shall comply with the current provisions of ZBJ08003
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