CN207364372U - A kind of guide's valve gear for gas extinguishing system on-line checking - Google Patents

Abstract

The utility model discloses a kind of guide's valve gear for gas extinguishing system on-line checking, arranged on driving device between the container value equipped with seal, guide's valve gear include valve body, can be in the valve rod and detent mechanism that are moved in valve body, the valve body is connected by a connection piece with container value, the valve body is equipped with locking mechanism, the locking mechanism coordinates with the detent mechanism, connector so that valve rod has the working position that can trigger seal and the locking bit that safe distance is kept between seal；The locking mechanism includes the locating piece that can move back and forth under external force effect and the position limiting structure for being limited the shift motion of locating piece.The utility model is simple in structure, install convenient, and without adjusting locking mechanism manually, locking mechanism is to the spacing accurate, stable of connector.

Description

A kind of guide's valve gear for gas extinguishing system on-line checking

Technical field

The utility model belongs to gas extinguishing system detection field, and it is online to be used for gas extinguishing system more particularly, to one kind Guide's valve gear of detection.

Background technology

GB50263-2007《Code for installation and acceptance of gas fire extinguishing systems》Middle 5.4.6 bars regulation be " pneumatic actuating device Air pressure leak test should be done after Pipe installing, and qualified ".But in Specific construction, due to pneumatic actuation pipeline directly with elder generation Pilot valve connects, and pneumatic actuation pipeline is in running order after installation is complete, can not implement air pressure leak test, if using Pipeline pre-connection is reinstalled again after carrying out air pressure leak test, just loses the meaning of leak test.

Simultaneously because guide's valve gear was failure to actuate after installing through normal 3 or five years, when pilot valve is being chronically at severe ring Be possible to occur in border spring failure, it is stuck phenomena such as, influence the normal operation of fire extinguishing system.Sold in gas extinguishing system Afterwards during maintenance, also lack effective method at present and on-line checking is carried out to pilot valve.Tradition needs pilot valve motion detection The step of pilot valve remove-being tested-installed again one by one, carries out, and whole process is troublesome, meanwhile, primer liner is torn open Unload, secondary installing, be unfavorable for the sealing of primer liner, there are some potential safety problems.

Chinese patent CN205350510 discloses a kind of starter for gas extinguishing system on-line checking, it is logical Cross the cooperation of locking piece and detent mechanism, connector so that valve body tool driving trigger member triggers seal to open through connector Open the first working position of container value and cause the second working position that safe distance is kept between trigger member and seal.But this is special Locking piece can not control the insertion degree of locking piece well, if insertion locking piece does not arrive to be adjusted manually in profit Position, can cause locking piece can not limit connector, i.e., can not lock；If excessive insertion locking piece, can cause locking piece without Method is extracted from valve body.

Utility model content

For overcome the deficiencies in the prior art, the utility model provides a kind of restraining position that can accurately control locking mechanism Guide's valve gear for gas extinguishing system on-line checking.

Technical solution is used by the utility model solves its technical problem：One kind is examined online for gas extinguishing system Guide's valve gear of survey, arranged on driving device between the container value equipped with seal, guide's valve gear include valve body, can In the valve rod and detent mechanism that are moved in valve body, the valve body is connected by a connection piece with container value, and the valve body is equipped with Locking mechanism, the locking mechanism coordinate with the detent mechanism, connector so that valve rod has the working position that can trigger seal And the locking bit of safe distance is kept between seal, what the locking mechanism included under external force effect to move back and forth determines Position part and the position limiting structure for being limited the shift motion of locating piece.Setting by position limiting structure in the utility model Put, effectively the shift motion of locating piece limited, avoid manually adjust locating piece caused by excessively it is spacing and it is spacing not The occurrence of in place, failure rate are low；Locating piece position is adjusted accurate at the same time, ensures spacing essence of the locking mechanism to connector It is accurate, stable, ensure during the test, be not in the situation that valve rod punctures seal.

Further, the position limiting structure includes the elastic component for acting on the locating piece, which is used to position Part drives the locating piece inwardly to reply automatically after being displaced outwardly；Elastic component can drive locating piece to automatically return to initial position, fixed It is accurate that the position of position part is adjusted, and guarantee is not in excessive spacing and spacing situation not in place；Meanwhile it need not be applied when replying Add external force, operation is more laborsaving.

Further, the position limiting structure further include with the matched mounting base of valve body, described elastic component one end with it is described Mounting base is engaged, and the other end is engaged with the locating piece；When locating piece is displaced outwardly, limited by mounting base so that Elastic component is extruded, and realizes the Rapid reset to locating piece.

Further, the locating piece is equipped with the limiting section for protruding from the setting of its outer surface；Limiting section can match somebody with somebody with valve body Close and contradict, prevent in locating piece excessive insertion valve body, further avoid excessively spacing situation from occurring；Meanwhile limiting section may be used also Coordinate when locating piece is displaced outwardly with mounting base and contradict, prevent locating piece from pulling excessively and by deviating from mounting base.

Further, the valve body is equipped with magnetic switch, and the valve rod is equipped with the magnetic part coordinated with the magnetic switch. Magnetic switch is electrically connected with DC plug coordinates the position for being used for detection magnetic part, and then determines whether valve rod acts, according to valve rod Position send electric signal, realize remote control, carry out the performance of batch detection pilot valve.

Further, the locating piece is equipped with easy to apply the draw ring of external force.Draw ring is supplied to operator one and applies Force.

Further, the detent mechanism coordinates including the locating part in valve body, on valve rod with the locating part Location division and the return unit that is sheathed on valve rod, the location division be tightly connected with valve interior wall, described return unit one end with Location division offsets, its other end is butted on connector.

Further, the locating part is movably arranged at valve interior wall.Locating part can move up and down, so as to adjust The stroke range up and down of valve rod.

Further, the top on the valve rod positioned at location division is equipped with stopper, which causes valve interior wall and valve rod Between form cavity；The valve body is equipped with the passage for being used for entering for driving gas, which connects with the cavity.Realize Utilize the function of driving gas starting so that guide's valve gear have it is manual start and pneumatically start two kinds of opening ways, carry The startup security reliability of high system.

Further, the passage is connected with primer liner, which is equipped with pressure measuring unit.When primer liner with Annular seal space is formed between valve body, can determine whether the leakproofness of primer liner conforms to by testing the pressure change on pipeline Ask.

The beneficial effects of the utility model are:It is simple in structure, install convenient, can effectively to the shift motion of locating piece into Row limitation, avoid manually adjust locating piece caused by excessively it is spacing and spacing not in place the occurrence of, failure rate is low；At the same time Locating piece position adjusting is accurate, ensures locking mechanism to the spacing accurate, stable of connector, guarantee during the test, will not There is a situation where valve rod punctures seal.

Brief description of the drawings

Fig. 1 is the utility model and primer liner and the fit structure schematic diagram of container value.

Fig. 2 is the cross-sectional view of utility model works position.

Fig. 3 is the cross-sectional view of the utility model locking bit.

Fig. 4 is another angular profile structure diagram of the utility model locking bit.

Fig. 5 is the A-A cross-sectional views in Fig. 1.

Embodiment

It is real below in conjunction with the utility model in order to make those skilled in the art be better understood from the utility model The attached drawing in example is applied, clear, complete description is carried out to the technical scheme in the embodiment of the utility model, it is clear that described Embodiment is only the part of the embodiment of the utility model, instead of all the embodiments.Based on the reality in the utility model Apply example, those of ordinary skill in the art's all other embodiments obtained without making creative work, all should When the scope for belonging to the utility model protection.

With reference to shown in Fig. 1-5, a kind of guide's valve gear for gas extinguishing system on-line checking, guide's valve gear is set Put between driving device 1 and container value 3, guide's valve gear includes valve body 2, the valve rod 21 that can be moved in valve body 2 and positioning Mechanism, valve body 2 include upper valve body 27 and lower valve body 28, and lower valve body 28 is removably socketed on the outer wall of upper valve body 27, improve The convenience of dismounting, lower valve body 28 are connected by connector 4 with container value 3, and the end of connector 4 stretches out to form card Portion 41.Valve rod 21 is sealedly connected in valve body 2 by second seal 292, and the lower end of valve rod 21 is equipped with trigger member 213, Yu Ben The trigger member 213 is cutter head structure in embodiment.Through hole is offered on the side wall of valve body 2, is detachably connected with the through hole Locking mechanism, the locking mechanism include locating piece 52 and the position limiting structure for being limited the shift motion of locating piece 52； In this present embodiment, the position limiting structure includes mounting base 51 and elastic component 53, and the mounting base 51 is threaded in through valve On the through hole of body sidewall, the locating piece 52 can move left and right under external force effect in mounting base 51；The elastic component 53 is Spring, the elastic component 53 are set in outside locating piece 52, and the locating piece 52 is equipped with a limiting section 522, and limiting section 522 The outer surface for protruding from the location division is set；Specifically, the limiting section 522 is by the shape that stretches out on 52 outer wall of locating piece Into annular protrusion, one end and the limiting section 522 of the elastic component 53 offset, and the other end and mounting base 51 of elastic component 53 are inner Face offsets；Mounting base is stretched out in the outer end of the locating piece 52, and is equipped with a draw ring 521, facilitates operator to exert a force locating piece 52, So that it overcomes the elastic force of elastic component 53 to be displaced outwardly.

When in working position, i.e., as shown in Fig. 2, operator decontrols draw ring 521, effect of the locating piece 52 in elastic component 53 The side wall of lower insertion lower valve body 28, the card division 41 on connector 4 is fastened on 52 upper surface of locating piece, the row that valve rod 21 moves up and down Journey scope is more than the distance between trigger member 213 and the seal being arranged in container value 3, i.e. manual depression driving device is downward Valve rod 21 is promoted, when valve rod 21 compresses return unit, the trigger member 213 positioned at 21 end of valve rod can puncture seal, so as to start Flask for medicinal preparations.

Lower valve body 28 is equipped with magnetic switch 22, which is powered with DC plug grafting, when valve rod 21 is driving When puncture action is done under the driving of gas, the magnetic part 211 being arranged on valve rod 21 is as valve rod 21 moves up and down, magnetic switch 22 The magnetic field intensity produced according to magnetic part 211 changes on off state, the DC plug when magnetic switch 22 detects the magnetic field of magnetic part 211 Power alarm, signal receiver receives electric signal, shows that trigger member 213 acts on request, determines that the action of guide's valve gear can By property；The signal receiver can realize that structure repeats no more for the prior art.

The locking mechanism coordinates with detent mechanism, connector 4 so that valve rod 21 has working position and locking bit, works as place When working position, the card division 41 of connector 4 is located at the top of locating piece 52, and driving device 1 can drive trigger member 213 to pass through downwards Connector 4 triggers the seal on container value, and seal is blowout disk in this present embodiment, is specially that cutter head punctures safety diaphragm Container value is opened in piece triggering；When in locking bit, card division 41 is between locating piece 52 and valve body 2, trigger member 213 and sealing Safe distance is kept between part, i.e. cutter head will not puncture blowout disk and open container value.

Driving device 1 is manual driving device in this present embodiment, it includes connecting seat 11, cam 12 and shaft 13, even Joint chair 11 is fixed on upper valve body 27 by nut 15, is sealed between upper valve body 27 and connecting seat 11 by first seal 291 Connection, cam 12 are rotatably connected on connecting seat 11 by shaft 13, and safety pin 14 is additionally provided between cam 12 and connecting seat 11, When needing to manually boot, safety pin 14 is pulled out, hand claps the handle on cam 12, passes through the cam track trace and valve on cam 12 Effect between 21 top of bar, control trigger member 213 pierce through the seal on container value 3, start extinguishing chemical bottle group.

The detent mechanism includes locating part 23, location division 24 and return unit 25, and the inner wall of lower valve body 28 is equipped with interior spiral shell Line structure, locating part 23 can be moved up and down by the internal thread to set the operation stroke of valve rod 21.Location division 24 is arranged on On valve rod 21, location division 24 is the outwardly extending bulge loop structure of 21 outer wall of valve rod in this present embodiment, and second seal 292 is set Between 27 inner wall of outer wall and upper valve body of the bulge loop structure, locating part 23 coordinates with location division 24 to be limited in valve rod 21 Moved up and down in certain stroke to ensure the distance between trigger member 213 and seal.Return unit 25 is set on valve rod 21, in Return unit 25 is spring in the present embodiment, and its one end and the bottom surface of location division 24 offset, and the other end offsets with connector 4.For Avoid spring from being shifted over, the upper table of connector 4 downwards concave shape into limiting slot, the other end and the limiting slot of spring Bottom wall offsets.

Top on the valve rod 21 positioned at location division 24 is equipped with stopper 212, and the stopper 212 is with determining in this present embodiment Position portion 24 is wholely set, its outside diameter is less than the bulge loop structure of 24 outside diameter of location division, so that the stopper 212 and 27 chamber of upper valve body Cavity is formed between side wall and top surface.It is indoor that the side wall of upper valve body 27 is equipped with the chamber for being used to enter for driving gas valve body 2 Passage 26, the passage 26 are connected with above-mentioned cavity, and passage 26 is connected with the primer liner 6 of gas extinguishing system.Primer liner 6 Pressure measuring unit is equipped with, when the cavity on primer liner and upper valve body 27 forms annular seal space A, passes through pressure measuring unit test starting Pressure change on pipeline, you can judge whether primer liner leakproofness meets standard requirement, change value of pressure is excessive, illustrates The leakproofness of primer liner is poor；The pressure measuring unit can realize that such as pressure sensor, structure is no longer gone to live in the household of one's in-laws on getting married for the prior art State.

The operation principle of the utility model is：Guide's valve gear is installed on container value, and is connected with primer liner, DC plug is inserted into magnetic switch, draw ring is pulled out and extracts locating piece, the restoring force due to being subject to return unit acts on, valve rod to Upper movement, when card division is in contact with lower valve body, decontrols draw ring, locating piece is inserted into lower valve body under the restoring force effect of elastic component Side wall so that when pushing down on valve rod manually by pushing cam, connector can only locating piece and the bottom wall of lower valve body it Between small range movement, the distance between trigger member and seal widened, and trigger member will not puncture seal startup flask for medicinal preparations. Driving gas is opened, valve rod is moved downward to locating part under the action of gas is driven, and magnetic part enters the induction zone of magnetic switch, Magnetic switch closes after sensing strong magnetic, and DC plug powers alarm.Circuit receives valve rod action and transmission signal is supervised to long-range End is controlled, while scene is observed that the trigger member of valve body and valve rod has change in displacement, determines that valve rod acts as requested, so that The detection to pilot valve device action reliability is completed on the premise of flask for medicinal preparations is not started.At this time between valve body and primer liner Annular seal space A is formed, the leakproofness of primer liner is may determine that by the change value of pressure read on pressure measuring unit.

After being completed, the air pressure released in primer liner, pulls open draw ring, pushes upper valve body so that trigger member and container The seal of valve has decontroled the reset of draw ring locating piece and has blocked connector, it is ensured that the trigger member on valve rod in pierceable stroke Diaphragm seal on pierceable container value, smoothly starts flask for medicinal preparations.

Above-mentioned embodiment is used for illustrating the utility model, rather than the utility model is limited, The spirit of the utility model and any modifications and changes in scope of the claims, made to the utility model, all fall Enter the scope of protection of the utility model.

Claims (10)

1. A kind of 1. guide's valve gear for gas extinguishing system on-line checking, arranged on driving device (1) and equipped with seal Between container value (3), valve rod (21) and position restrainer that guide's valve gear includes valve body (2), can be moved in valve body (2) Structure, the valve body (2) are connected by a connection piece (4) with container value (3), and the valve body (2) is equipped with locking mechanism, the locking Mechanism and the position-limit mechanism, connector (4) coordinate so that valve rod (21) have the working position that can trigger seal and with sealing The locking bit of safe distance is kept between part, it is characterised in that：The locking mechanism includes mounting base (51) and is acted in external force Down can be along the mobile locating piece (52) of mounting base (51).
2. A kind of 2. guide's valve gear for gas extinguishing system on-line checking according to claim 1, it is characterised in that： The mounting base (51) is equipped with the elastic component (53) for being used for resetting the locating piece (52).
3. A kind of 3. guide's valve gear for gas extinguishing system on-line checking according to claim 1, it is characterised in that： The valve body (2) is equipped with magnetic switch (22), and the valve rod (21) is equipped with the magnetic part coordinated with the magnetic switch (22) (211)。
4. A kind of 4. guide's valve gear for gas extinguishing system on-line checking according to claim 1, it is characterised in that： The locating piece (52) is equipped with easy to apply the draw ring (521) of external force.
5. A kind of 5. guide's valve gear for gas extinguishing system on-line checking according to claim 1, it is characterised in that： What the position-limit mechanism coordinated including the locating part (23) in valve body (2), on valve rod (21) with the locating part (23) Location division (24) and the return unit (25) being sheathed on valve rod (21), the location division (24) are connected with valve body (2) inner wall sealing, Described return unit (25) one end offsets with location division (24), its other end is butted on connector (4).
6. A kind of 6. guide's valve gear for gas extinguishing system on-line checking according to claim 5, it is characterised in that： The locating part (23) is movably arranged at valve body (2) inner wall.
7. 7. a kind of guide's valve gear for gas extinguishing system on-line checking according to claim 1, its feature exist In：The driving device (1) includes the connecting seat (11) being connected with valve body (2), the cam (12) coordinated with the valve rod (21) And for connecting the shaft (13) of the connecting seat (11) and cam (12).
8. A kind of 8. guide's valve gear for gas extinguishing system on-line checking according to claim 7, it is characterised in that： Safety pin (14) is equipped between the cam (12) and connecting seat (11).
9. A kind of 9. guide's valve gear for gas extinguishing system on-line checking according to claim 1, it is characterised in that： Top on the valve rod (21) positioned at location division (24) is equipped with stopper (212), the stopper (212) so that valve body (2) inner wall and Valve rod forms cavity between (21)；The valve body (2) is equipped with the passage (26) for being used for entering for driving gas, the passage (26) Connected with the cavity.
10. 10. a kind of guide's valve gear for gas extinguishing system on-line checking according to claim 9, its feature exist In：The passage (26) is connected with primer liner (6), which is equipped with pressure measuring unit.