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Online detection apparatus and method for waterless sealing of gate valve

A technology for sealing detection and gate valve, which is applied in the field of water-free online sealing detection devices for gate valves, which can solve the problems such as the inability to realize automatic and online detection of the sealing performance of gate valves, so as to improve detection accuracy and consistency, improve detection efficiency, and improve production. The effect of efficiency

Pending Publication Date: 2019-02-15
安徽中科智能高技术有限责任公司
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Problems solved by technology

[0004] The invention proposes an anhydrous online sealing performance detection device and detection method for a gate valve, which can solve the technical problem that the traditional technology cannot realize the automatic and online detection of the sealing performance of the gate valve

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  • Online detection apparatus and method for waterless sealing of gate valve

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Embodiment Construction

[0034] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments.

[0035] figure 1 It is a structural schematic diagram of the embodiment of the present invention, the solid line is the trachea connection, the dotted line is the circuit connection, and the dotted line is the mechanical connection.

[0036] Such as figure 1 As shown, the gate valve anhydrous online sealing performance detection device described in this embodiment is based on the gate valve 4, and the gate valve 4 includes double gates to form three isolation chambers, chamber A, chamber B and chamber C, chamber B is located in the middle, A handle...

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Abstract

The invention relates to an online detection apparatus and a method for waterless sealing of a gate valve. The apparatus comprises a detection gas path unit, a plugging unit and a detection control unit. The detection gas path unit comprises a gas source, an inlet valve, a test valve, a vent valve, a differential pressure transmitter and a pressure transmitter connected through a pipeline. The inlet valve, the test valve, the vent valve, the differential pressure transmitter and the pressure transmitter are electrically connected to the detection control unit to control the opening and closingof each valve member and collect the signal of the differential pressure transmitter and the pressure transmitter. The plugging unit comprises a first plugging end cover and a second plugging end cover for respectively plugging two outer cavities of the gate valve. The plugging end cover can be controlled, by the detection control unit, to be opened or closed, so that the gate valve is stopped orcommunicated. The online detection apparatus and the method for the waterless sealing of the gate valve can realize the automatic detection of waterless external leakage and internal leakage sealingof the gate valve with an isolation cavity formed by double rams, and is suitable for an automatic production line of the online detection for the waterless sealing of a valve member, thereby improving the production efficiency, and improving the detection precision and consistency.

Description

technical field [0001] The invention relates to the technical field of valve sealing detection, in particular to an anhydrous online sealing performance detection device and detection method of a gate valve. Background technique [0002] As an important device for connecting or cutting off pipelines such as urban gas, heating, and sewage, gate valves have high requirements for sealing performance, especially for gate valves with double gates to form an isolation cavity, not only the overall casting is required to have no external leakage, It is also required that the isolation cavity formed in the gate valve has no internal leakage. For the external leakage detection of gate valves, many manufacturers adopt the water detection method of artificially looking at the air bubbles, some use pressure gauges to see the pressure drop, and some use the method of hydraulic flow measurement, such as the patent application number 201410809793.1 "On-line hydraulic detection equipment for...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M3/28
CPCG01M3/2876
Inventor 龙飞邢武高锋郑勇伍先达曾威威詹超吴鹏卜益军
Owner 安徽中科智能高技术有限责任公司
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