Anti-jamming valve element assembly of pressure release valve of lubricating oil gear pump

A spool assembly and pressure relief valve technology, applied in the field of pressure relief valves, can solve problems such as wear and stickiness, achieve the effects of prolonging service life, long service life, and ensuring normal function of the valve
CN112228601APending Publication Date: 2021-01-15CNNC NUCLEAR POWER OPERATION MANAGEMENT +1
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
CNNC NUCLEAR POWER OPERATION MANAGEMENT
Publication Date
2021-01-15

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Abstract

The invention relates to an anti-jamming valve element assembly of a pressure release valve of a lubricating oil gear pump. The anti-jamming valve element assembly comprises a valve element 1, a spring 2 and a spring base 3; one end of the spring base 3 is fixed in a pressure release valve cavity, and the other end of the spring base 3 extends into the spring 2; the other end of the spring 2 is connected with the valve element 1; the other end of the valve element 1 makes contact with a base of the pressure release valve to keep a certain pre-tightening force of the spring 2; and the distancebetween the valve element 1 and the spring base 3 is larger than the maximum opening and closing distance of the valve element. The anti-jamming valve element assembly of the pressure release valve can efficiently and safely solve the problem that the valve element of the pressure release valve of the lubricating oil gear pump of an emergency diesel engine is frequently abraded and jammed under the condition that the original performance of the lubricating oil gear pump is not affected.
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Description

technical field

[0001] The invention belongs to the technical field of pressure relief valves, in particular to an anti-jamming valve core assembly of a pressure relief valve of a lubricating oil gear pump. Background technique

[0002] The 4 emergency diesel generator sets of Fangjiashan Nuclear Power Plant constitute the emergency AC power supply in the plant. In the case of the loss of the main power supply and the backup power supply outside the plant, they are able to meet the power requirements of the emergency plant equipment to ensure the safety of the reactor shutdown. Prevent damage to critical equipment due to loss of normal external power supply system.

[0003] Since the official commercial operation in 2014, the Fangjiashan emergency diesel generator set has repeatedly experienced failures in which the pre-lubrication oil pressure was lower than 0.4bar after the monthly test and an alarm occurred. In the hot standby state, the pre-lubrication oil pressure shou...

Claims

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