CN201177086Y

CN201177086Y - Pipeline leak detection valve

Info

Publication number: CN201177086Y
Application number: CNU2008200571953U
Authority: CN
Inventors: 吴方亮; 张凌云; 吴方凯; 吴加伦; 陈宇
Original assignee: SHANGHAI LECHENG ELECTRONIC TECHNOLOGY Co Ltd
Current assignee: SHANGHAI LECHENG ELECTRONIC TECHNOLOGY Co Ltd
Priority date: 2008-04-11
Filing date: 2008-04-11
Publication date: 2009-01-07
Anticipated expiration: 2018-04-11

Abstract

The utility model relates to a pipeline leak hunting valve which has a structure as follows: an upper liquid cavity and a lower liquid cavity are arranged inside a housing; the inner part of the lower liquid cavity is connected with an oil metering rod, a lifting valve, a lifting valve head and a connecting shaft in sequence; a guide sleeve is sleeved outside the lifting valve; a spring is arranged between the guide sleeve and the connecting shaft; a guide groove on the guide sleeve is in sliding fit connection with a guide pin fixed on the housing; the lifting valve is in sliding seal connection with a base fixed inside the housing; the inner part of the lifting valve is provided with a lateral surface hole, a middle hole, a turning hole and an overflow hole; the lateral surface hole is communicated with the turning hole which is communicated with a lifting valve head groove and the middle hole in sequence; the overflow hole is communicated with a through hole in the connecting shaft through the lifting valve head; the through hole in the connecting shaft is communicated with the upper liquid cavity through the lateral surface hole; the inner part of the upper liquid cavity is in sliding seal fixation to a shaft housing on the connecting shaft, and an oil seal in sliding seal connection with the connecting shaft is arranged between the upper liquid cavity and the lower liquid cavity. The pipeline leak hunting valve ensures that an operater in a ground control chamber can directly observe the pressure of the pipeline, particularly the pressure in the pipeline buried underground.

Description

The pipeline valve that leaks hunting

Technical field

The utility model relates to a kind of device that detects pipe leakage, especially a kind of valve that is used to detect pipe leakage in the pipeline that is connected, in case being embedded in underground pipe leakage can not in time be found, major part is oil product and chemical liquid raw material in these pipelines, and the leakage of oil product and liquid charging stock can cause the pollution to the earth.

Background technique

At present, the detection that pipeline pressure leaks realizes by manual operation, particularly the manifold pressure situation ground control room operator under burial ground can not directly observe the leakage situation of pipeline, but the effect of this valve is a visual inspection pressure, in case leakage meeting automatic-closing valve is at once arranged, prevents the purpose that oil product and chemical liquid leak.

Summary of the invention

The utility model is to solve the technical problem that control room, ground operator directly observe the manifold pressure situation under the burial ground, and the control valve that provides a kind of pipeline to leak hunting and close automatically.

For achieving the above object, the technical solution adopted in the utility model is:

A kind of pipeline valve that leaks hunting, comprise housing, be characterized in: have one to go up sap cavity and a following sap cavity in the housing, in following sap cavity, be connected with dipping rod from left to right in turn, poppet valve, poppet valve head penetrates the coupling shaft of sap cavity, and the poppet valve outside is socketed with guide pin bushing, be equipped with spring between guide pin bushing and the coupling shaft, guiding groove on the guide pin bushing cylindrical be fixed on guide finger sliding connection on the housing, poppet valve base 1 slipper seal interior with being fixed on housing is connected, and has lateral aperture in the poppet valve, mesopore, the circulation hole, overflow hole, lateral aperture communicates with the circulation hole, the circulation hole successively with the poppet valve head groove, mesopore is communicated with, and overflow hole is communicated with through hole in the coupling shaft through poppet valve head, and the through hole in the coupling shaft communicates with last sap cavity through side opening, slipper seal is fastened on the axle sleeve on the coupling shaft in the last sap cavity, is provided with the oil sealing that is connected with the coupling shaft slipper seal between last sap cavity and the following sap cavity.

The shell ends of last sap cavity is socketed with housing lid outward, is tightly connected by the O RunddichtringO between housing lid and the housing, and is locked with Cock screw; The force value information that the pressure transmitter that fixedly connected and last sap cavity is connected on the housing side of last sap cavity, pressure transmitter will be gone up sap cavity passes to computer or secondary meter by lead.

The beneficial effects of the utility model are: control room, ground operator can directly observe the pressure condition of pipeline, the manifold pressure situation under burial ground particularly, establish pressure transducer at last sap cavity, information is passed to computer or secondary meter by lead, can read the force value of sap cavity, just can judge the following pipe leakage situation of sap cavity down, be provided with emergency alarm simultaneously and self-closing device prevents underground contaminated and waste resource at computer or secondary meter, play the purpose of environmental protection and saving.

Description of drawings

Fig. 1 is a structure sectional view of the present utility model;

Fig. 2 is along the sectional view of A-A among Fig. 1;

Fig. 3 is the utility model workflow diagram.

Embodiment

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

As Fig. 1, shown in 2, the pipeline of the present utility model valve that leaks hunting comprises base 1, housing 4, dipping rod 2, poppet valve 7,

O type circle

3,5,15,22, poppet valve head 8, guide pin bushing 9, guide finger 10, spring 11, housing lid 13, Cock screw 14 axle sleeves 17, spring seat 20, coupling shaft 21 etc.

There is one to go up sap cavity h and a following sap cavity e in the housing 4, in sap cavity e down, installation beam hanger 2 successively from left to right, poppet valve 7, poppet valve head 8, coupling shaft 21, coupling shaft 21 front ends penetrate in the sap cavity.Poppet valve 7 outsides are socketed with guide pin bushing 9, are equipped with spring 11 between guide pin bushing 9 and the coupling shaft 21, and spring 11 1 ends and guide pin bushing 9 interior edge faces join, and the other end joins by the dividing plate between spring seat 20 and following sap cavity e and the last sap cavity h.Guiding groove on guide pin bushing 9 cylindricals be fixed on guide finger 10 sliding connections on the housing 4, poppet valve 7 is connected with base 1 usefulness oil sealing 6 slipper seals in being fixed on housing 4, and is fixing with being threaded between base 1 and the housing 4, and seals at joint usefulness O type circle 3.Have lateral aperture i in the poppet valve 7, mesopore b, circulation hole c, overflow hole d, lateral aperture i communicates with circulation hole c, the circulation hole c successively with poppet valve head groove a, mesopore b is communicated with, overflow hole d is communicated with through hole f in the coupling shaft through poppet valve head, through hole f in the coupling shaft 21 communicates with last sap cavity h through side opening g, slipper seal is fastened on the axle sleeve 17 on the coupling shaft 21 in the last sap cavity h, and axle sleeve 17 usefulness hexagon nut with flanges 16 are fixed on the coupling shaft 21, is provided with the oil sealing 12 that is connected with coupling shaft 21 slipper seals between last sap cavity h and the following sap cavity e.Be tightly connected by oil sealing 18 between axle sleeve 17 and the last sap cavity h.

Housing 4 ends of last sap cavity h are socketed with housing lid 13 outward, are tightly connected by O RunddichtringO 15 between housing lid 13 and the housing 4, and are locked with Cock screw 14.The pressure transmitter 19 that fixedly connected and last sap cavity h is connected on housing 4 sides of last sap cavity h, the force value information that pressure transmitter 19 will be gone up sap cavity h passes to computer by lead.

The utility model normally moves (see figure 3) when opening:

Cracking pressure formula liquid pump, liquid flow into from mesopore b through poppet valve 7, through overflow hole d, flow to outlet sap cavity e down.When liquid was full in the sap cavity e instantly, the lateral aperture i of liquid in poppet valve 7 flowed into, the through hole f in coupling shaft 21, and the side opening g of coupling shaft 21 flows to and goes up sap cavity h in the housing 4.When pressure in the system (pressure in following sap cavity e and the last sap cavity h) rise to gradually setting pressure (as, the machine that refuels needs pressure 2.6-2.8kg/cm ²) time, the pushing shaft parts move upward (pressure spring 11 drives poppet valve head 8 and poppet valve 7), open valve, and liquid flows directly into outlet sap cavity e down, whole system proper functioning from poppet valve 7 sides.

When closing after the normal operation of the utility model:

Closing pressure formula liquid pump, liquid pump produce and reflux, and then go up the interior liquid of sap cavity h through axle side opening g, through hole f, poppet valve overflow hole d, following sap cavity e, poppet valve mesopore b, poppet valve head groove a, poppet valve circulation hole c, poppet valve lateral aperture i flows back to liquid pump, refluxes, the spring reinstatement, the valve that leaks hunting cuts out.

When outlet conduit leaks:

When the valve that leaks hunting cuts out, if the following outlet conduit of base 1 and following sap cavity e leaks, leakage rate can't reach when causing setting value the pressure of sap cavity e and last sap cavity h during greater than the flow of poppet valve 7 mesopore i, then can't open the valve that leaks hunting and reach the purpose that prevents leak of liquid.

Claims

1. pipeline valve that leaks hunting, comprise housing 4, it is characterized in that, there is one to go up a sap cavity (h) and a following sap cavity (e) in the described housing 4, in following sap cavity (e), be connected with dipping rod (2) from left to right in turn, poppet valve (7), poppet valve head (8), penetrate the coupling shaft (21) of sap cavity (h), poppet valve (7) outside is socketed with guide pin bushing (9), be equipped with spring (11) between guide pin bushing (9) and the coupling shaft (21), guiding groove on guide pin bushing (9) cylindrical be fixed on housing (4) and go up guide finger (10) sliding connection, poppet valve (7) base (1) slipper seal interior with being fixed on housing (4) is connected, have lateral aperture (i) in the poppet valve (7), mesopore (b), circulation hole (c), overflow hole (d), lateral aperture (i) communicates with circulation hole (c), the circulation hole (c) successively with poppet valve head groove (a), mesopore (b) is communicated with, overflow hole (d) is communicated with through hole (f) in the coupling shaft (21) through poppet valve head 8, through hole (f) in the coupling shaft (21) communicates with last sap cavity (h) through side opening (g), the interior slipper seal of last sap cavity (h) is fastened on the axle sleeve (17) on the coupling shaft (21), is provided with the oil sealing (12) that is connected with coupling shaft (21) slipper seal between last sap cavity (h) and the following sap cavity (e).

2. the pipeline according to claim 1 valve that leaks hunting, it is characterized in that, the described housing (4) of going up sap cavity is socketed with housing lid (13) outside holding, and is tightly connected by O RunddichtringO (15) between housing lid (13) and the housing (4), and is locked with Cock screw (14).

3. the pipeline according to claim 1 valve that leaks hunting, it is characterized in that, the pressure transmitter (19) that fixedly connected and last sap cavity (h) is connected on housing (4) side of described upward sap cavity, the force value information that pressure transmitter (19) will be gone up sap cavity (h) passes to computer by lead.