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Fire detection system, air source supply unit thereof, flow controller and dewatering method

A fire detection and supply unit technology, applied in pump components, machines/engines, liquid variable capacity machinery, etc., can solve problems such as emulsification of lubricating oil, and achieve the effect of easy emulsification

Active Publication Date: 2016-06-08
DAYA BAY NUCLEAR POWER OPERATIONS & MANAGEMENT +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] This application provides a fire alarm detection system and its air source supply unit, restrictor and drainage method, which solves the problem of lubricating oil emulsification caused by water entering the crankcase of the air compressor

Method used

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  • Fire detection system, air source supply unit thereof, flow controller and dewatering method
  • Fire detection system, air source supply unit thereof, flow controller and dewatering method
  • Fire detection system, air source supply unit thereof, flow controller and dewatering method

Examples

Experimental program
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Effect test

Embodiment 1

[0060] Please refer to figure 2 , this embodiment provides an air compressor outlet restrictor used in an air source supply unit of a fire alarm detection system, which includes a main part 201 .

[0061] One end of the main part 201 is used to be tightly connected to the passage between the outlet of the air compressor and the check valve. The main part 201 is provided with an exhaust passage 202 inside. The exhaust passage 202 is used to connect the outlet of the air compressor to the reverse valve. The internal passage between the stop valves communicates with the outside world.

[0062] In a specific embodiment, the cross section of the exhaust channel 202 is a circle with a diameter not greater than 2 mm. In other embodiments, the cross-sectional shape of the exhaust channel 202 can also be set to other shapes, such as triangle, square, regular pentagon and so on.

[0063] Since the outlet restrictor of the air compressor continuously exhausts the internal passage betw...

Embodiment 2

[0067] Please refer to Figure 4 and Figure 5 , this embodiment provides another air compressor outlet restrictor used in the air source supply unit of the fire alarm detection system, which includes a main part 401 and an adjusting part 402 .

[0068] One end of the main part 401 is used to be tightly connected to the passage between the outlet of the air compressor and the check valve. The main part 401 is provided with an exhaust passage 403 inside. The exhaust passage 403 is used to connect the outlet of the air compressor to the reverse valve. The internal passage between the stop valves communicates with the outside world.

[0069] In a specific embodiment, the cross section of the exhaust channel 403 is a circle with a diameter not greater than 2 mm. In other embodiments, the cross-sectional shape of the exhaust channel 403 can also be set to other shapes, such as triangle, square, regular pentagon, and the like.

[0070] Since the outlet restrictor of the air compr...

Embodiment 3

[0078] Please refer to Figure 6 , the present embodiment provides an air source supply unit of a fire alarm detection system, which includes an air compressor 301 , a check valve 302 and an outlet restrictor 303 of the air compressor. The outlet of the air compressor 301 is used to be connected to one end of the check valve 302, and the other end of the check valve 302 is used to be connected to the fire detection unit ( Figure 6 enter the JDT end), the air compressor outlet restrictor 303 is set between the outlet of the air compressor 301 and the check valve 302, and is used to control the internal passage between the outlet of the air compressor 301 and the check valve 302 Continuous exhaust.

[0079] In this embodiment, the air compressor outlet restrictor 303 adopts any one of the air compressor outlet restrictors provided in Embodiment 1 and Embodiment 2.

[0080]In a specific embodiment, a manual drain valve 304 is also provided between the check valve 302 and the f...

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Abstract

Provided are a fire detection system, an air source supply unit thereof, a flow controller and a dewatering method. The flow controller of an outlet of an air compressor is arranged between the outlet and a check valve of the air compressor so that online continuous exhaust during operation of the air compressor can be achieved so as to achieve dewatering. Compared with the offline dewatering mode through a manual dewatering valve in the prior art, condensate water of an internal pass between the outlet and the check valve of the air compressor can be drained effectively and prevented from entering a crank case of the air compressor, and accordingly the problem that lubricating oil of the air compressor is likely to be emulsified is solved. The flow controller of the outlet of the air compressor is easy to mount onto an existing unit, and as a permanent formal device of the system, the flow controller can effectively solve the problem that lubricating oil of the air compressor is likely to be emulsified without dramatically changing the system. For a newly built unit, the flow controller of the outlet of the air compressor can also be conveniently mounted into the system so as to solve the problem that lubricating oil of the air compressor is likely to be emulsified; and the flow controller contributes much to improvement of the reliability of the fire detection system.

Description

technical field [0001] The present application relates to a fire detection system, in particular to a fire detection system, an air source supply unit, a throttle and a drainage method thereof. Background technique [0002] The air compressor in the fire detection system JDT is used to supply the air source of the JDT system, and is usually an air-cooled, two-stage piston, and double-cylinder air compressor. [0003] For the L4JDT002CO air compressor used in Ling Ao Phase II Nuclear Power Plant, on November 8, 2012, members of the transfer project team replaced the lubricating oil. During the inspection on November 16, 2012, it was found that the lubricating oil in the air compressor was seriously emulsified. The lubricating oil of the air compressor was tested and found that the water content of the lubricating oil reached 9.8%, which was far higher than the standard value of 0.2%. On November 16, 2012, the primary and secondary cylinders of the air compressor were also cl...

Claims

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Application Information

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IPC IPC(8): F04B39/16F04B39/10
Inventor 李永根荆哲伍忠清徐小维胡纪广
Owner DAYA BAY NUCLEAR POWER OPERATIONS & MANAGEMENT