A built-in oil pressure seat for preventing crude oil retention in oil fields
An oil pressure seat, crude oil technology, applied in valve devices, measuring devices, measuring fluid pressure and other directions, can solve the problems affecting the service life of oil pressure gauges, the hazards of oil workers, and the impact of oil pressure detection, so as to reduce human injury, Improve accuracy and eliminate residual pressure
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Embodiment 1
[0036] A built-in oil pressure seat for oilfields to prevent crude oil from remaining, such as Figure 1-Figure 6 As shown, it includes an outer casing 1, a first sealing ring 101, an oil inlet component 2, an oil and gas transfer housing 3, a second sealing ring 301, an oil and gas casing 306, an arc tube 307, a buffer component 4, and a crude oil pushback component 5. The one-way oil and gas transmission part 6 and the rotary switch 8, the outer casing 1 is partially embedded in the crude oil pipeline, and the upper and lower parts of the inner surface of the outer casing 1 are respectively provided with internal threads. The upper and lower internal threads of the outer casing 1 have different pitches. The pitch of the internal thread is greater than that of the lower internal thread. The inner surface of the lower part of the outer casing 1 is fixedly connected with a first sealing ring 101. The middle part of the outer casing 1 is provided with a first crude oil transmissi...
Embodiment 2
[0039] On the basis of Example 1, such as image 3 , Figure 4 and Figure 7 As shown, the oil inlet part 2 includes a threaded ring 201, a first connecting rod 202, an oil inlet rod 203, an oil inlet plate 204, and a first limit ring 205. The outside of the threaded ring 201 is provided with external threads, and the outside of the threaded ring 201 The thread cooperates with the inner thread on the upper part of the outer casing 1, and the height of the inner thread on the upper part of the outer casing 1 is greater than the height of the threaded ring 201. The threaded ring 201 is used to move up and down the oil inlet part 2. The first connecting rod 202 is symmetrically arranged with two Two first connecting rods 202 are respectively affixed to the lower part of the inner surface of the threaded ring 201, and two oil inlet rods 203 are symmetrically arranged left and right, and the upper parts of the two oil inlet rods 203 are fixedly connected to the adjacent first conn...
Embodiment 3
[0047] On the basis of Embodiment 2, when the oil pressure gauge 7 needs to be replaced, the operator first closes the oil pressure seat, and the operator first turns the rotary switch 8 counterclockwise for two turns. A limit rod 4041 is limited on the upper part of the oil-gas transmission housing 3, the buffer ring 402, the fixed column 4024, the first limit rod 4041, the first limit spring 4042, the second limit rod 4043, the limit ball 4044 and the second The limit spring 4045 moves synchronously with the oil-gas transfer housing 3, the buffer limit assembly is in close contact with the second limit ring 405 under the elastic force of the third limit spring 406, and the oil inlet part 2 and the buffer limit assembly move upwards Greater than the upward movement distance of the oil-gas transfer housing 3, during the upward movement of the second limit ring 405, the third limit spring 406 gradually recovers, and the buffer limit assembly moves upward relative to the buffer r...
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