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Electric valve mechanical interlocking device

A technology of interlocking device and electric valve, which is applied in the direction of valve device, valve operation/release device, mechanical equipment, etc., and can solve problems such as no valve installed, wrong operation sequence, production accidents, etc.

Active Publication Date: 2017-02-01
SHANGHAI KAIYAN MACHINERY EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing technology can only solve the problem of the mechanical interlocking device on the manual valve. A mechanical interlocking device has not been developed for the valve electric actuator. Valves without mechanical interlocking have certain potential safety hazards.
If the operation sequence is wrong during the operation of the valve, production accidents will occur

Method used

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  • Electric valve mechanical interlocking device
  • Electric valve mechanical interlocking device
  • Electric valve mechanical interlocking device

Examples

Experimental program
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Effect test

Embodiment 1

[0019] Such as figure 1 As shown, a mechanical interlocking device for an electric valve is installed on the electric valve. The electric valve includes a handwheel 1, an electric actuator 2 and a valve body 3. The mechanical interlocking device for the electric valve includes a switch locking unit 4 , a handwheel locking unit 5 and a key exchange unit 6, the switch locking unit 4 is connected to the electric actuator 2, the handwheel locking unit 5 is fixed on the valve body 3 and connected to the handwheel 1 , the switch locking unit 4, the handwheel locking unit 5 and the key exchange unit 6 are connected and matched by a key.

[0020] The switch locking unit in the mechanical interlocking device of the electric valve can lock the switch state of the electric actuator; the key exchange unit in the mechanical interlocking device of the electric valve can exchange keys and can be used to open the locking unit of the switch and the handwheel respectively. The locking unit or ...

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PUM

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Abstract

The invention discloses an electric valve mechanical interlocking device which is installed on an electric valve. The electric valve comprises a hand wheel, an electric execution mechanism and a valve body. The electric valve mechanical interlocking device comprises a switch locking unit, a hand wheel locking unit and a key exchange unit. The switch locking unit and the electric execution mechanism are connected. The hand wheel locking unit is fixed to the valve body and connected with the hand wheel. The switch locking unit, the hand wheel locking unit and the key exchange unit are connected and matched through a key. The electric execution mechanism can be contained in an interlocking system, the key can also be exchanged and interlocked with a manual valve mechanical interlocking device, and therefore safety of the whole system is ensured. The correct key can be pulled out through the correct operation sequence even through the electric execution mechanism cannot be forcibly locked, and correct logic operation can be carried out only through the correct key. Accordingly, system technology logic can be ensured under the condition that normal operation of the electric execution mechanism is not affected.

Description

technical field [0001] The invention relates to the field of safe operation of valves, in particular to a mechanical interlocking device for electric valves. Background technique [0002] There are many valve electric actuators in the receiving and receiving ball systems of natural gas long-distance pipelines and oil long-distance pipelines. There is a strict operating sequence between these valve electric actuators and manual valves. Once human error occurs, production accidents will occur. . In these occasions, the use of valve interlocking devices is very necessary. The current technological solution is to install valve mechanical interlocking devices on manual valves, and the operation of valve electric actuators is based on the operation ticket system. Some factories adopt the operation ticket operation system on manual valves and valve electric actuators. The existing technology can only solve the problem of the mechanical interlocking device on the manual valve, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K35/00F16K31/02F16K31/44
CPCF16K31/02F16K31/44F16K35/00
Inventor 段瑞卿
Owner SHANGHAI KAIYAN MACHINERY EQUIP
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