Pipeline rupture valve high-pressure test device and test method
A high-pressure test and rupture valve technology, which is applied to measuring devices, using stable tension/pressure to test the strength of materials, instruments, etc., can solve problems such as the inability to guarantee the validity of test safety test data, and achieve the effect of improving accuracy.
Pending Publication Date: 2021-05-28
深圳市质量安全检验检测研究院
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Problems solved by technology
[0005] Therefore, the technical problem to be solved in the present invention is to overcome the fact that the test device in the prior art cannot guarantee the safety of the test and the validity of the test data.
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Embodiment 1
[0035] The present embodiment provides a high-pressure test device for pipeline rupture valve 12, such as figure 1 As shown, it includes a pressurized cylinder 10 and its oil circuit system. The booster cylinder 10 is suitable for connecting the valve body of the pipeline rupture valve 12 to be tested, and the booster cylinder 10 amplifies the required working pressure. In this test device, the booster ratio of the booster cylinder 10 is 1:2.48. The working pressure of the conventional pipeline rupture valve 12 generally does not exceed 10Mpa. According to the requirements of TSG T7007-2016 "Elevator Type Test Rules", this test device is suitable for raising the corresponding test pressure to 50Mpa through the booster cylinder 10, and avoiding During the test, there are dangers caused by pressure oil ejection and valve body rupture.
[0036] In this test device, the oil circuit system includes fuel tank 1, oil pump 3, electromagnetic reversing valve 7, one-way throttle valve ...
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The invention provides a pipeline rupture valve high-pressure test device and method, and the device comprises a pressure cylinder and an oil path system for controlling the pressure cylinder, and the pressure cylinder is suitable for being connected with a to-be-detected valve body. The oil way system comprises an electromagnetic reversing valve. The front end of the electromagnetic directional valve is connected with the pressure cylinder; the rear end of the electromagnetic directional valve is connected with the oil tank through two pipelines, and one pipeline is sequentially connected with an overflow valve and an oil pump; the other pipeline is directly connected with the oil tank and suitable for hydraulic oil backflow. A one-way throttle valve is arranged between the electromagnetic directional valve and the pressure cylinder. A first pressure gauge is arranged between the pressure cylinder and the to-be-detected valve body. The pressure cylinder is adopted to provide enough high test pressure, and the electromagnetic directional valve, the one-way throttle valve and the overflow valve are arranged to adjust the pressure, so that the accuracy of the test pressure is improved, overpressure protection is provided, and the test safety of the device is improved while effective test data are ensured.
Description
technical field [0001] The invention relates to the technical field of test devices, in particular to a high-pressure test device and a test method for a pipeline rupture valve. Background technique [0002] Pipeline rupture valve, also known as speed limiting cut-off valve, is an important safety protection component of hydraulic elevators. When the hydraulic pump station of the hydraulic elevator fails or the hydraulic pipeline bursts, the pipeline rupture valve can automatically cut off the oil circuit to prevent the car from running downward at an overspeed and even a possible fall accident. [0003] According to the requirements of TSG T7007-2016 "Elevator Type Test Rules", the pipeline rupture valve needs to be tested for compressive strength. It is required to apply a test pressure equivalent to 5 times the maximum working pressure on the pipeline rupture valve, and keep the pressure for 2 minutes. Permanent damage occurs. [0004] The maximum working pressure of th...
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IPC IPC(8): G01N3/12G01N3/02
CPCG01N3/02G01N3/12
Inventor 陈桂洲丘彬李灌辉张峰刘锡奎张怀继
Owner 深圳市质量安全检验检测研究院