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CN-224231181-U - Check valve test system

CN224231181UCN 224231181 UCN224231181 UCN 224231181UCN-224231181-U

Abstract

The utility model discloses a check valve test system which comprises a check valve, a shell, and a first cover body and a second cover body which are connected with two ends of the shell in a threaded manner, wherein the check valve is arranged in the shell in a sealing manner, a first test cavity is arranged between the check valve and the first cover body, a second test cavity is arranged between the check valve and the second cover body, and filler necks are arranged on the first cover body and the second cover body. The check valve test system has the advantages of simple structure, high working efficiency and capability of preventing the check valve from being damaged in the installation process.

Inventors

  • CHENG WEIMING
  • BAI YIYANG
  • LIU JUNGANG
  • PANG WEI
  • ZHOU HUIQIANG

Assignees

  • 长沙五七一二飞机工业有限责任公司

Dates

Publication Date
20260512
Application Date
20250530

Claims (10)

  1. 1. The check valve test system is characterized by comprising a check valve (9), a shell (1) and a first cover body (2) and a second cover body (3) which are connected to two ends of the shell (1) in a threaded mode, wherein the check valve (9) is arranged in the shell (1) in a sealing mode, a first test cavity is arranged between the check valve (9) and the first cover body (2), a second test cavity is arranged between the check valve (9) and the second cover body (3), and a filler neck (4) is arranged on each of the first cover body (2) and the second cover body (3).
  2. 2. The check valve test system according to claim 1, wherein a first step (11) is provided in the housing (1), and one end of the check valve (9) is mounted on the first step (11) in a sealing manner.
  3. 3. The check valve test system according to claim 2, wherein a first sealing member (51) is further arranged in the housing (1), and the first sealing member (51) is abutted against the first step (11), one end of the check valve (9) and the inner wall of the housing (1).
  4. 4. The check valve test system according to claim 2, wherein the end face of the first cover (2) is pressed against the other end of the check valve (9).
  5. 5. The check valve test system according to claim 4, wherein a second sealing member (52) is further arranged in the housing (1), and the second sealing member (52) is abutted against the end face of the first cover body (2), one end of the other end of the check valve (9) and the inner wall of the housing (1).
  6. 6. The check valve test system according to claim 1, wherein the second step (12) is provided in the housing (1), and a limit portion (21) for abutting against the second step (12) is provided on the first cover body (2).
  7. 7. The one-way valve test system according to claim 1, wherein the second cover (3) is provided with a sealing portion (31), and a third sealing member (53) is abutted between the sealing portion (31) and the end surface of the housing (1).
  8. 8. A check valve test system according to claim 7, wherein a third step (13) for abutting against the end face of the second cover (3) is further provided in the housing (1).
  9. 9. The check valve test system according to any one of claims 1 to 8, wherein the opening direction of the check valve (9) is a direction from the second cover (3) to the first cover (2).
  10. 10. A check valve test system according to claim 1, wherein the second cover (3) is not installed when the reverse sealability test is performed.

Description

Check valve test system Technical Field The utility model relates to the technical field of valve tests, in particular to a one-way valve test system. Background The plate-type check valve is an accessory widely applied to an aircraft and is mainly installed on an aircraft fuel system, and the main function is to enable fuel to flow in a specified direction and prevent the fuel from flowing backwards. Because the plate-type one-way valve has a plate-type integral structure and no relevant interfaces outside, the plate-type one-way valve cannot be directly connected with ground test equipment during repair and detection. The technical scheme of the conventional check valve test system is that two flange devices are designed, a plate-type check valve is installed between the two flange plates, then the flange devices and the plate-type check valve are fixedly connected through screws and nuts, and finally the flange plates are connected with ground test equipment for test. The prior art has the following defects: 1) The flange plate device is connected with the plate-type one-way valve through the screw and the nut, the connection mode has the defects of inconvenient assembly and disassembly, complex operation, difficult sealing and the like, and the mounting surface of the plate-type one-way valve is easy to deform and damage when the screw tightening moment is increased for improving the tightness of the flange device, so that the appearance quality of a product is influenced; 2) When carrying out reverse leakproofness test and measuring the product oil leakage, the fluid of seepage can leak to the ring flange inside at first, then flows through the screwed connection pipe on the ring flange, can't directly observe the valve export leakage condition, if the ring flange device has the internal leak this moment, will lead to the test result to appear the deviation, influences the accuracy of test result. Disclosure of utility model The utility model aims to solve the technical problem of overcoming the defects of the prior art and providing the check valve test system which has the advantages of simple structure and high working efficiency and can prevent the damage to the check valve in the installation process. In order to solve the technical problems, the utility model adopts the following technical scheme: The utility model provides a check valve test system, includes check valve, casing and threaded connection in the first cover body and the second cover body at casing both ends, the check valve seal cover is located in the casing, be equipped with first test chamber between check valve and the first cover body, be equipped with the second test chamber between check valve and the second cover body, all be equipped with the filler neck on first cover body and the second cover body. As a further improvement of the above technical scheme: The shell is internally provided with a first step, and one end of the one-way valve is hermetically arranged on the first step. The shell is internally provided with a first sealing piece, and the first sealing piece is in butt joint with one end of the first step and the one-way valve and the inner wall of the shell. The end face of the first cover body is pressed at the other end of the one-way valve. The shell is internally provided with a second sealing piece, and the second sealing piece is in butt joint with the end face of the first cover body, one end of the other end of the one-way valve and the inner wall of the shell. The shell is internally provided with a second step, and the first cover body is provided with a limiting part which is used for propping against the second step. The second cover body is provided with a sealing part, and a third sealing piece is abutted between the sealing part and the end face of the shell. And a third step which is used for propping against the end face of the second cover body is also arranged in the shell. The opening direction of the one-way valve is the direction from the second cover body to the first cover body. The second enclosure is not installed when the reverse tightness test is performed. Compared with the prior art, the utility model has the advantages that: 1. According to the check valve test system, the first cover body and the second cover body are respectively in threaded connection with the shell, namely, the threaded split design is adopted, the structure is simple, the assembly and the disassembly are convenient, the working efficiency is high, and the check valve is sealed and sleeved in the shell, so that the first cover body and the second cover body are not directly connected with the check valve, the influence on the check valve during the installation of the first cover body and the second cover body can be reduced, and the damage to the check valve in the installation process is prevented. 2. According to the check valve test system, the end face of the first cover body is pressed at the other end of