Pressure switch assembly and installation method thereof
A pressure switch and assembly technology, applied in the field of rail vehicles, can solve problems such as waste of human resources, impact on service life, and operator inconvenience, and achieve the effects of solving measurement value errors, saving human resources, and improving the working environment
Inactive Publication Date: 2020-09-22
CRRC DALIAN CO LTD
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Problems solved by technology
[0003] 1. The test connector is only used for testing, and the utilization rate is low. In addition, it is exposed together with the external pipeline and is often attacked by moisture, mist and other dust and impurities. It is prone to problems such as rust and locking, which will affect the service life;
[0004] 2. The distance between the existing test joint and the pressure switch is relatively long. On the one hand, the pressure detection device at the test joint cannot truly feedback the pressure value at the pressure switch, that is, it cannot accurately correspond to the action value of the pressure switch; on the other hand On the one hand, during the test process, it is necessary to observe the reading of the pressure detection device at the test joint and the action of the pressure switch at the same time, and sometimes multiple people are required to cooperate in the test, resulting in a waste of human resources;
[0005] 3. The installation of test joints in the already arranged external pipelines is often limited by the operating space, which brings a lot of inconvenience to the operator
Method used
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[0035] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0036] Figure 1-2 A front view and a side view of a pressure switch assembly according to an embodiment of the present invention are shown respectively. As shown in the figure, the pressure switch assembly generally includes a pressure switch body 100, a test joint 200 integrated at the gas circuit interface 110 of the pressure switch body 100, and a housing 300 containing the pressure switch body 100 and the test joint 200 therein. . In an embodiment of the present invention, the test joint 200 can be a T-joint, the T-joint has a first interface 210, a second interface 220 and a third interface 230, the first interface ...
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The invention discloses a pressure switch assembly. The pressure switch assembly comprises a pressure switch body; and a test joint which is integrated at the gas circuit interface of the pressure switch body. The pressure switch assembly has the advantages of simple structure, convenient installation, high test precision and the like. The invention further provides an installation method of the pressure switch assembly.
Description
technical field [0001] The invention relates to the technical field of rail vehicles, in particular to a pressure switch assembly with an integrated test joint and an installation method thereof. Background technique [0002] The pressure switch is a device that can automatically convert the change of air pressure in the sealed pipeline into an electrical signal. It is used to control the start and stop of the air compressor of urban rail vehicles or other executive devices related to compressed air. It is usually set in a dedicated In the casing; the test joint is the equipment used to detect the pressure of the pipeline in the daily maintenance of the brake system for the pipeline, and it can usually be connected in series or parallel to the external pipeline of the pressure switch. There are following defects in this traditional installation method: [0003] 1. The test connector is only used for testing, and the utilization rate is low. In addition, it is exposed togeth...
Claims
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IPC IPC(8): G01M13/00G01L11/00G01L19/00H01H35/26
CPCG01L11/00G01L19/0015G01M13/00H01H35/26
Inventor 袁世琳孙桂环刘秀美胡乃琳
Owner CRRC DALIAN CO LTD