CN102818053A - Voltage regulator and cut-off valve thereof - Google Patents
Voltage regulator and cut-off valve thereof Download PDFInfo
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- CN102818053A CN102818053A CN2012103232637A CN201210323263A CN102818053A CN 102818053 A CN102818053 A CN 102818053A CN 2012103232637 A CN2012103232637 A CN 2012103232637A CN 201210323263 A CN201210323263 A CN 201210323263A CN 102818053 A CN102818053 A CN 102818053A
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Abstract
The invention provides a cut-off valve for voltage regulators, which comprises a valve body, a cut-off valve port, a valve assembly and a protection cover, wherein the valve body is provided with an air inlet channel; the cut-off valve port is arranged on the valve body, and a cavity of the cut-off valve port is communicated with the air inlet channel; the outer side of the valve assembly is sleeved with a first seal ring, and when the cut-off valve is closed, the valve assembly is in hermetical contact with the cut-off valve port through the first seal ring; and the protection cover is arranged on the cut-off valve port or the valve body, the protection cover is provided with a guide section which is in sliding fit with the valve assembly, a gap is arranged between the guide section and the cut-off valve port, and when the cut-off valve is opened, the guide section is sleeved on the outer side of the valve assembly, and the first seal ring is arranged between the guide section and the valve assembly. The protection cover can achieve a protection effect on the first seal ring, and avoid that the first seal ring is directly exposed to the outside and an airflow can not directly blow the first seal ring, so that a phenomenon that the seal ring slips due to the blowing action of the airflow can be reduced, and then the safety of a voltage regulator is improved. The invention also provides a voltage regulator.
Description
Technical field
The present invention relates to a kind of regulator of combustion gas, more particularly, relate to a kind of cut-off valve of pressure governor, the invention still further relates to a kind of pressure governor with above-mentioned cut-off valve.
Background technique
Gas pressure regulator, governor is commonly called as reduction valve, is to make the outlet combustion gas keep the equipment of authorized pressure through automatic change through the gas flow of modulating valve.Pressure governor commonly used has two kinds; A kind of is the pressure governor that includes only modulating valve, and another kind is the pressure governor that comprises modulating valve and two kinds of valve mechanisms of cut-off valve, when the downstream gaseous-pressure surpasses setting pressure; Cut-off valve can block source of the gas automatically, plays the safety protection effect.
Please refer to accompanying drawing 1; This figure is the structural representation of a kind of pressure governor of the prior art, and this pressure governor comprises modulating valve and cut-off valve, wherein; Cut-off valve comprises valve body 101; The cut-out valve port 102 that is arranged on the valve body 101 seals the valve assembly that contacts with being used for and cutting off valve port 102, and this valve assembly comprises the top that cuts off pull bar 104 and be arranged on cut-out pull bar 104, and the top is the flap 103 of conical surface.In the process of this voltage regulator operation; When the downstream gaseous-pressure on acting on cut-out pull bar 104 surpasses setting pressure; Cut off pull bar 104 and can push cut off flap 103 to valve port 102 places, the conical surface at flap 103 tops is contacted with cut-out valve port 102 towards moving near the direction of cutting off valve port 102; And the O RunddichtringO 105 in the conical surface outside through being set in flap 103 make flap 103 with cut off valve port 102 around sealing contact, with closing of realization cut-off valve.
But, because above-mentioned O RunddichtringO is set in the conical surface outside of flap,,, thereby make cutter lose the cut-out function because of the phenomenon that the brush effect may cause the slippage of O RunddichtringO of blowing of air-flow so pressure governor is in use, bring potential safety hazard to people.In addition, be exposed on the O RunddichtringO in the outside and be prone to pile up dirt; When cut-off valve cut out, the dirt that carries on the O RunddichtringO can have a strong impact on the sealing of cut-off valve, can bring potential safety hazard to people equally.
In sum, how a kind of cut-off valve of pressure governor is provided, the phenomenon of the seal ring slippage that is caused with the brush effect of blowing that reduces air-flow, and then the Security that improves pressure governor are the technical problems that present those skilled in the art need to be resolved hurrily.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of cut-off valve of pressure governor, the phenomenon of the seal ring slippage that is caused with the brush effect of blowing that reduces air-flow, and then the Security that improves pressure governor.
The present invention also provides a kind of pressure governor with above-mentioned cut-off valve.
In order to achieve the above object, the present invention provides following technological scheme:
A kind of cut-off valve of pressure governor comprises:
Valve body, this valve body is provided with gas-entered passageway;
Be arranged on the cut-out valve port on the said valve body, the cavity of said cut-out valve port is connected with said gas-entered passageway;
Valve assembly, this valve assembly outside is arranged with first seal ring, and said cut-off valve is when cutting out, and said valve assembly contacts with said cut-out sealing valve port through said first seal ring;
Also comprise:
Be arranged on the safety cover on said cut-out valve port or the said valve body; This safety cover has the guide section that is slidingly matched with said valve assembly; Be provided with between said guide section and the said cut-out valve port at interval; And when said cut-off valve was opened, said guide section was set in the outside of said valve assembly, and said first seal ring is between said guide section and said valve assembly.
Preferably, in the above-mentioned cut-off valve, said valve assembly comprises:
The cut-out pull bar that can move along its axial direction, this cut-out pull bar is provided with the location shaft shoulder;
Be set in the back lash spring seat on the said cut-out pull bar;
Be set in the cut-out spring on the said back lash spring seat, and said cut-out spring is positioned at shaft shoulder place, said location away from an end of said back lash spring seat;
Be set in the piston valve in the outside, said cut-out pull bar top; Can relatively slide between said cut-out pull bar and the said piston valve along said axial direction; And the location end face that has the said back lash spring seat in location on the said piston valve; The arranged outside of said piston valve has places first annular groove that said first seal ring is used, and when said cut-off valve was opened, said guide section was set in the outside of said piston valve.
Preferably, in the above-mentioned cut-off valve, said valve assembly also comprises:
Be located at the top of said cut-out pull bar, the release flap between said cut-out pull bar and said piston valve; The top arranged outside of this release flap has second annular groove, and when said cut-off valve cut out, said release flap contacted with said piston valve sealing through second seal ring that is set in said second annular groove; Be provided with the cavity that is communicated in said cut-out valve port and the discharge channel between the said gas-entered passageway between said release flap and the said piston valve.
Preferably, in the above-mentioned cut-off valve, the top of said piston valve is provided with the upper position-arresting end face that stops said release flap and said piston valve slide relative and prevents that said release flap breaks away from the lower position-arresting end face of said piston valve;
Said release flap is provided with the annular outer that is fastened between said stop bit end face and the said lower position-arresting end face and rises, and said annular outer rises and is positioned at the side of said second annular groove away from said cut-out valve port.
Preferably, in the above-mentioned cut-off valve, the top of the said release flap in edge also is disposed with release packing ring and the release plug screw that compresses said release packing ring between said release flap and the said piston valve on the direction of its bottom extension;
Wherein, said release packing ring said annular outer rise and said upper position-arresting end face between; Said release plug screw is provided with said lower position-arresting end face; Said release packing ring is provided with along said axial direction and extends the packing ring release through hole that the top is connected with the cavity of said cut-out valve port; Said release plug screw is provided with along said axial direction and extends, and is communicated in the bottom of said packing ring release through hole and the plug screw discharge channel between the said gas-entered passageway; And said annular outer rises and can contact with the bottom end opening sealing of said packing ring release through hole.
Preferably, in the above-mentioned cut-off valve, said first seal ring and said second seal ring are the O RunddichtringO.
Preferably, in the above-mentioned cut-off valve, said cut-out pull bar is connected through screw-thread fit with said release flap.
Preferably, in the above-mentioned cut-off valve, said safety cover is fixed on the said cut-out valve port through hexagon socket head cap screw.
Preferably, in the above-mentioned cut-off valve, said cut-out valve port is provided with when said cut-off valve cuts out, and can connect with said valve assembly and seals the annular internal projection that contacts.
Can find out from above-mentioned technological scheme; The present invention provides the cut-off valve of pressure governor to have and is arranged on the safety cover that cuts off on valve port or the valve body, and when cut-off valve was opened, the guide section of safety cover was set in the outside of valve assembly; First seal ring is between guide section and valve assembly; This moment, safety cover can play the effect of protection to first seal ring, avoided it directly to expose in the outside, and air-flow can not directly blow brush to first seal ring; So; The cut-off valve that is exposed at the outside with seal ring of the prior art is compared the phenomenon of the seal ring slippage that the brush effect of blowing that the present invention provides the cut-off valve of pressure governor can reduce air-flow is caused, and then the Security that has improved pressure governor.
In addition, because when cut-off valve was opened, first seal ring was positioned at the guide section of safety cover, has reduced the accumulation of dirt on first seal ring, has improved the sealing when cut-off valve is closed, and then reduced potential safety hazard.
The present invention also provides a kind of pressure governor, comprises cut-off valve, and said cut-off valve is above-mentioned any cut-off valve, because above-mentioned cut-off valve has above-mentioned effect, the pressure governor with above-mentioned cut-off valve has same effect, so this paper repeats no more.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technological scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of a kind of pressure governor of the prior art;
Fig. 2 is the structural representation of the cut-off valve of the pressure governor that provides of the embodiment of the invention;
Fig. 3 is the structure for amplifying schematic representation of A part among Fig. 2;
Fig. 4 is the structural representation of the valve assembly that provides of the embodiment of the invention.
Embodiment
The embodiment of the invention provides a kind of cut-off valve of pressure governor, can reduce the phenomenon of the seal ring slippage that the brush effect of blowing of air-flow caused, and then the Security that improves pressure governor.
For the purpose, technological scheme and the advantage that make the embodiment of the invention clearer; To combine the accompanying drawing in the embodiment of the invention below; Technological scheme in the embodiment of the invention is carried out clear, intactly description; Obviously, described embodiment is the present invention's part embodiment, rather than whole embodiments.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment who is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
Please refer to accompanying drawing 2-4, the cut-off valve of the pressure governor that the embodiment of the invention provides comprises valve body 1, cuts off valve port 2, valve assembly and safety cover 3; Wherein, valve body 1 is provided with gas-entered passageway 14; Cut off that valve port 2 is arranged on the valve body 1 and it, cavity is connected with gas-entered passageway 14; The valve assembly outside is arranged with first seal ring 8, and cut-off valve is when cutting out, valve assembly through first seal ring 8 with cut off valve port 2 and seal and contact; Safety cover 3 is arranged on and cuts off on valve port 2 or the valve body 1; It has the guide section 31 that is slidingly matched with valve assembly; Be provided with at interval between this guide section 31 and the cut-out valve port 2; And when cut-off valve was opened, guide section 31 was set in the outside of valve assembly, and first seal ring 8 is between guide section 31 and valve assembly.
When the cut-off valve of the pressure governor that the embodiment of the invention provides was opened, the guide section 31 of safety cover 3 was set in the outside of valve assembly, and first seal ring 8 is between guide section 31 and valve assembly; Be valve assembly with and on first seal ring 8 all be positioned at guide section 31; Like this, after combustion gas enters into gas-entered passageway 14, the guide section 31 and cut off the interval between the valve port 2 of can flowing through; Then enter into the cavity that cuts off valve port 2, flow to the downstream gas path of pressure governor at last; When above-mentioned cut-off valve cuts out; Valve assembly can be along upwards (promptly to the direction near cut-out valve port 2) slip of guide section 31; Be positioned at cut-out valve port 2 places until valve assembly; And pass through first seal ring 8 and realize contacting with the sealing of cutting off valve port 2, and then stop air-flow to get into the cavity of cut-out valve port 2, thus realized the cut-out function of cut-off valve.
To sum up can know, because the embodiment of the invention provides the cut-off valve of pressure governor to have safety cover 3, and when cut-off valve is opened; The guide section 31 of safety cover 3 is set in the outside of valve assembly, and first seal ring 8 is between guide section 31 and valve assembly, and this moment, safety cover 3 can play the effect of protection to first seal ring 8; Avoid it directly to expose in the outside; Air-flow can not directly blow brush to first seal ring 8, so the cut-off valve that is exposed at the outside with seal ring of the prior art is compared; The phenomenon of the seal ring slippage that the brush effect of blowing that the embodiment of the invention provides the cut-off valve of pressure governor can reduce air-flow is caused, and then the Security that has improved pressure governor.
In addition, because when cut-off valve was opened, first seal ring 8 was positioned at the guide section 31 of safety cover 3, has reduced the accumulation of dirt on first seal ring 8, has improved the sealing when cut-off valve is closed, and then reduced potential safety hazard.
Preferably, in the cut-off valve that the foregoing description provides, valve assembly comprises cut-out pull bar 4, back lash spring seat 6, cuts off spring 5 and piston valve 9: wherein, cut-out pull bar 4 is provided with the location shaft shoulder and can moves along its axial direction; Back lash spring seat 6 is set in and cuts off on the pull bar 4; Cut off spring 5 and be set on the back lash spring seat 6, and its end away from back lash spring seat 6 is positioned at shaft shoulder place, location; Piston valve 9 is set in the outside that cuts off pull bar 4 tops; Cut off between pull bar 4 and the piston valve 9 and can relatively slide along the axial direction that cuts off pull bar 4; And the location end face that has location back lash spring seat 6 on the piston valve 9; Its arranged outside has first annular groove of placing first seal ring, 8 usefulness, and when cut-off valve was opened, guide section 31 was set in the outside of piston valve 9.Need to prove that the top that cuts off pull bar 4 is that it is near an end that cuts off valve port 2.
When the downstream of pressure governor gaseous-pressure during less than setup pressure value; The pressure governor proper functioning, the cut-off valve that the embodiment of the invention provided is in opening state, promptly piston valve 9 and on first seal ring 8 all be positioned at guide section 31 places; After combustion gas enters into gas-entered passageway 14; Can flow through guide section 31 and cut off the interval between the valve port 2 then enters into the cavity that cuts off valve port 2, flows to the downstream gas path of pressure governor at last.
When the downstream of pressure governor gaseous-pressure during greater than setup pressure value; Promptly act on the pressure that cuts off on the pull bar 4 greater than setup pressure value, cut off pull bar 4 and can move up (promptly to moving), compress the cut-out spring 5 between the back lash spring seat 6 and the location shaft shoulder thereof near the direction of cutting off valve port 2; Cutting off spring 5 this moment will promote back lash spring seat 6 and cut off pull bar 4 to move up simultaneously; When treating to move on to the end, location of piston valve 9 on the back lash spring seat 6, cut-out pull bar 4 is inconjunction with back lash spring seat 6 and moves up together with piston valve 9, when waiting to move on to the position that cuts off valve port 2; Piston valve 9 can contact with 2 sealings of cut-out valve port through first seal ring 8; Both realize closing automatically the operation of cut-off valve, promptly cut off source of the gas automatically, played the effect of safety protection.
Certainly; Said structure is a kind of concrete implementation of valve assembly; It can also be the structural type of the valve assembly that provided in the background technique, and perhaps other can realize and cut off valve port 2 sealing contacting structure forms, and the embodiment of the invention is not done qualification to this.
In the time need opening to the cut-off valve that is in closed condition; Need piston valve 9 be withdrawn the position that cuts off valve port 2; Owing to be in negative pressure state in the cavity of cut-out valve port 2; If (promptly to the direction away from cut-out valve port 2) lifts and cuts off pull bar 4 and piston valve 9 directly downwards, need apply very big power, waste time and energy.
In order to address the above problem, the valve assembly that the foregoing description provides also comprises: be located at the top that cuts off pull bar 4, at the release flap 11 that cuts off between pull bar 4 and the piston valve 9; The top arranged outside of this release flap 11 has second annular groove, and when cut-off valve cut out, release flap 11 contacted with piston valve 9 sealings through second seal ring 12 that is set in second annular groove; Be provided with between release flap 11 and the piston valve 9 and be communicated in the cavity that cuts off valve port 2 and the discharge channel between the gas-entered passageway 14.Need to prove, the top of release flap 11 on it near an end that cuts off valve port 2.
When use has the cut-off valve of above-mentioned valve assembly; Not only need satisfy piston valve 9 contacts with cutting off between the valve port 2 to seal through first seal ring 8; Also need satisfy between release flap 11 and the piston valve 9 contact, at this moment, not only can stop air-flow from piston valve 9 and the cavity that cuts off the space entering cut-out valve port 2 between the valve port 2 through 12 sealings of second seal ring; Can also stop air-flow to get into the cavity that cuts off valve port 2, thereby realize closing of cut-off valve from discharge channel.
When need only needing directly lift to cut off pull bar 4 when the cut-off valve of closed condition is opened again, make second seal ring 12 break away from piston valves 9 downwards; Even have the space between release flap 11 and the piston valve 9; This moment, discharge channel was opened, and air-flow can get in the cavity that cuts off valve port 2 through this discharge channel, had improved the negative pressure state in the cavity that cuts off valve port 2; Reduced the active force that need apply; Thereby be convenient to lift piston valve 9 downwards, piston valve 9 is pulled back to its initial position, and then realize the unlatching again of cut-off valve.
In order further to optimize technique scheme; In the cut-off valve that the foregoing description provides, the top of piston valve 9 is provided with upper position-arresting end face that stops release flap 11 and piston valve 9 slide relative and the lower position-arresting end face that prevents release flap 11 disengaging piston valves 9; Release flap 11 is provided with the annular outer that is fastened between stop bit end face and the lower position-arresting end face and rises, and annular outer rises and is positioned at second annular groove away from a side of cutting off valve port 2.Like this, at release flap 11 during, annular outer worked being limited between upper position-arresting end face and the lower position-arresting end face, and can prevent that release flap 11 breaks away from piston valve 9 when sliding, improved its safety type with piston valve 9 slide relative.
In the present embodiment; Piston valve 9 center positions are provided with the connecting through hole that is communicated between its top and the bottom; This connecting through hole comprises to its bottom from its top successively: first through hole that the aperture increases progressively successively; Second through hole and third through-hole, like Fig. 3 and shown in Figure 4, this connecting through hole can be used as the discharge channel that in the cavity that cuts off valve port 2, feeds gas.Simultaneously, above-mentioned upper position-arresting end face is the end face that is connected that is connected between first through hole and second through hole; Be connected in and be connected the location end face of end face between second through hole and the third through-hole for location back lash spring seat 6 usefulness; Above-mentioned lower position-arresting end face can be the annular end face that protrudes in second through hole, and the positioning block of positioning ring and so on can also be set on the hole wall of second through hole.
Preferably, in the cut-off valve that the foregoing description provides, on the direction of extending to its bottom along the top of release flap 11, also be disposed with release packing ring 10 between release flap 11 and the piston valve 9 and compress the release plug screw 13 of release packing ring 10; Wherein, release packing ring 10 annular outer rise and the upper position-arresting end face between; Release plug screw 13 is provided with the lower position-arresting end face; Release packing ring 10 is provided with along axial direction and extends, the packing ring release through hole that the top is connected with the cavity that cuts off valve port 2; Release plug screw 13 is provided with along axial direction and extends, and is communicated in the bottom of packing ring release through hole and the plug screw discharge channel between the gas-entered passageway 14; And annular outer rises and can contact with the bottom end opening sealing of packing ring release through hole.
At this moment; Release packing ring 10 can cushion the active force between the upper position-arresting end face of annular outer lug and piston valve 9; Avoid annular outer to rise directly and contact,, improved the Security of cut-off valve because of the excessive annular outer that causes of active force plays distortion with the upper position-arresting end face.Simultaneously, release plug screw 13 has the release of compressing packing ring 10, prevents the effect that it comes off.And packing ring release through hole and plug screw discharge channel are formed discharge channel jointly, and this is the another kind of implementation of discharge channel in the present embodiment, and it can also be other implementation, and this paper sets forth no longer one by one.In addition, when cut-off valve cut out, annular outer rose and can contact with the bottom end opening sealing of packing ring release through hole, can further stop air-flow to get into the cavity that cuts off valve port 2, the Security that has further improved cut-off valve from discharge channel.
Preferably, in the cut-off valve that the embodiment of the invention provides, first seal ring 8 and second seal ring 12 are the O RunddichtringO.Both can also perhaps can satisfy the seal ring of other kinds of sealability for y-type seal ring.
In the cut-off valve that the foregoing description provides, cut off pull bar 4 and release flap 11 and be connected through screw-thread fit.Like Fig. 3 and shown in Figure 4, the top that cuts off pull bar 4 has the threaded stem section, and release flap 11 is provided with the tapped hole that matches with the threaded stem section, when to be installed, directly above-mentioned threaded stem section screwed in the above-mentioned tapped hole and gets final product.Certainly, cut-out pull bar 4 can also weld with release flap 11 or riveted way links together, and also can realize that through other linkage structure both are continuous, and present embodiment is not done qualification.
Concrete, in the cut-off valve that the foregoing description provides, safety cover 3 is fixed on through hexagon socket head cap screw 7 and cuts off on the valve port 2.This mounting type is simple, and practices thrift cost.Safety cover 3 can also weld, riveted joint.Or being threaded of other structures realized the installation of safety cover 3; Simultaneously, safety cover 3 can also be arranged on the valve body 1.
For the valve port 2 that is sealed and matched, cuts off that realize to cut off valve port 2 and valve assembly better is provided with when cut-off valve cuts out, can connects with valve assembly and seal the annular internal projection that contacts.At this moment, the circumferential end surfaces of annular internal projection and valve assembly connects, and can further optimize sealing effect, has improved the Security of cut-off valve.
The embodiment of the invention also provides a kind of pressure governor, comprises cut-off valve, and this cut-off valve is above-mentioned any cut-off valve that embodiment provided.
The cut-off valve that above-mentioned pressure governor adopts present embodiment to provide; Can reduce the phenomenon of the seal ring slippage that the brush effect of blowing of air-flow caused; And then the Security that has improved pressure governor; Its advantage is brought by cut-off valve, concrete please refer to part relevant in the foregoing description, just repeats no more at this.
Each embodiment adopts the mode of going forward one by one to describe in this specification, and what each embodiment stressed all is and other embodiments' difference that identical similar part is mutually referring to getting final product between each embodiment.
To the above-mentioned explanation of the disclosed embodiments, make related domain professional and technical personnel can realize or use the present invention.Multiple modification to these embodiments will be conspicuous concerning those skilled in the art, and defined General Principle can realize under the situation that does not break away from the spirit or scope of the present invention in other embodiments among this paper.Therefore, the present invention will can not be restricted to these embodiments shown in this paper, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.
Claims (10)
1. the cut-off valve of a pressure governor comprises:
Valve body (1), this valve body (1) is provided with gas-entered passageway (14);
Be arranged on the cut-out valve port (2) on the said valve body (1), the cavity of said cut-out valve port (2) is connected with said gas-entered passageway (14);
Valve assembly, this valve assembly outside is arranged with first seal ring (8), and said cut-off valve is when cutting out, and said valve assembly seals with said cut-out valve port (2) through said first seal ring (8) and contacts;
It is characterized in that, also comprise:
Be arranged on the safety cover (3) on said cut-out valve port (2) or the said valve body (1); This safety cover (3) has the guide section (31) that is slidingly matched with said valve assembly; Be provided with between said guide section (31) and the said cut-out valve port (2) at interval; And when said cut-off valve was opened, said guide section (31) was set in the outside of said valve assembly, and said first seal ring (8) is positioned between said guide section (31) and the said valve assembly.
2. cut-off valve according to claim 1 is characterized in that, said valve assembly comprises:
The cut-out pull bar (4) that can move along its axial direction, this cut-out pull bar (4) is provided with the location shaft shoulder;
Be set in the back lash spring seat (6) on the said cut-out pull bar (4);
Be set in the cut-out spring (5) on the said back lash spring seat (6), and said cut-out spring (5) is positioned at shaft shoulder place, said location away from an end of said back lash spring seat (6);
Be set in the piston valve (9) in the outside, said cut-out pull bar (4) top; Can relatively slide between said cut-out pull bar (4) and the said piston valve (9) along said axial direction; And the location end face that has the said back lash spring seat in location (6) on the said piston valve (9); The arranged outside of said piston valve (9) has first annular groove of placing said first seal ring (8) usefulness; When said cut-off valve was opened, said guide section (31) was set in the outside of said piston valve (9).
3. cut-off valve according to claim 2 is characterized in that, said valve assembly also comprises:
Be located at the top of said cut-out pull bar (4), be positioned at the release flap (11) between said cut-out pull bar (4) and the said piston valve (9); The top arranged outside of this release flap (11) has second annular groove, and when said cut-off valve cut out, said release flap (11) contacted with said piston valve (9) sealing through second seal ring (12) that is set in said second annular groove; Be provided with the cavity that is communicated in said cut-out valve port (2) and the discharge channel between the said gas-entered passageway (14) between said release flap (11) and the said piston valve (9).
4. cut-off valve according to claim 3; It is characterized in that the top of said piston valve (9) is provided with the upper position-arresting end face that stops said release flap (11) and said piston valve (9) slide relative and prevents that said release flap (11) breaks away from the lower position-arresting end face of said piston valve (9);
Said release flap (11) is provided with the annular outer that is fastened between said stop bit end face and the said lower position-arresting end face and rises, and said annular outer rises and is positioned at the side of said second annular groove away from said cut-out valve port (2).
5. cut-off valve according to claim 4; It is characterized in that; On the direction of extending to its bottom along the top of said release flap (11), also be disposed with release packing ring (10) between said release flap (11) and the said piston valve (9) and compress the release plug screw (13) of said release packing ring (10);
Wherein, said release packing ring (10) said annular outer rise and said upper position-arresting end face between; Said release plug screw (13) is provided with said lower position-arresting end face; Said release packing ring (10) is provided with along said axial direction and extends the packing ring release through hole that the top is connected with the cavity of said cut-out valve port (2); Said release plug screw (13) is provided with along said axial direction and extends, and is communicated in the bottom of said packing ring release through hole and the plug screw discharge channel between the said gas-entered passageway (14); And said annular outer rises and can contact with the bottom end opening sealing of said packing ring release through hole.
6. according to any described cut-off valve of claim 3-5, it is characterized in that said first seal ring (8) and said second seal ring (12) are the O RunddichtringO.
7. cut-off valve according to claim 6 is characterized in that, said cut-out pull bar (4) is connected through screw-thread fit with said release flap (11).
8. according to any described cut-off valve of claim 1-5, it is characterized in that said safety cover (3) is fixed on the said cut-out valve port (2) through hexagon socket head cap screw (7).
9. cut-off valve according to claim 1 is characterized in that, said cut-out valve port (2) is provided with when said cut-off valve cuts out, and can connect with said valve assembly and seals the annular internal projection that contacts.
10. a pressure governor comprises cut-off valve, it is characterized in that, said cut-off valve is any described cut-off valve of aforesaid right requirement 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210323263.7A CN102818053B (en) | 2012-09-04 | 2012-09-04 | Voltage regulator and cut-off valve thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210323263.7A CN102818053B (en) | 2012-09-04 | 2012-09-04 | Voltage regulator and cut-off valve thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102818053A true CN102818053A (en) | 2012-12-12 |
| CN102818053B CN102818053B (en) | 2014-03-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210323263.7A Active CN102818053B (en) | 2012-09-04 | 2012-09-04 | Voltage regulator and cut-off valve thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112823255A (en) * | 2018-10-10 | 2021-05-18 | 艾默生过程管理调节技术公司 | Emergency shutdown safety assembly for providing redundant safety shutdown |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001336655A (en) * | 2000-05-29 | 2001-12-07 | Matsushita Electric Ind Co Ltd | Shutoff valve |
| CN201228773Y (en) * | 2008-07-02 | 2009-04-29 | 大丰市燃气设备有限责任公司 | Valve port sealing device of pressure regulator |
| CN201487228U (en) * | 2009-08-11 | 2010-05-26 | 河北慧星调压器有限公司 | Gas high-pressure cut-off valve |
| CN202834239U (en) * | 2012-09-04 | 2013-03-27 | 成都杰森输配设备实业有限公司 | Pressure-adjusting device and shut-off valve thereof |
-
2012
- 2012-09-04 CN CN201210323263.7A patent/CN102818053B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001336655A (en) * | 2000-05-29 | 2001-12-07 | Matsushita Electric Ind Co Ltd | Shutoff valve |
| CN201228773Y (en) * | 2008-07-02 | 2009-04-29 | 大丰市燃气设备有限责任公司 | Valve port sealing device of pressure regulator |
| CN201487228U (en) * | 2009-08-11 | 2010-05-26 | 河北慧星调压器有限公司 | Gas high-pressure cut-off valve |
| CN202834239U (en) * | 2012-09-04 | 2013-03-27 | 成都杰森输配设备实业有限公司 | Pressure-adjusting device and shut-off valve thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112823255A (en) * | 2018-10-10 | 2021-05-18 | 艾默生过程管理调节技术公司 | Emergency shutdown safety assembly for providing redundant safety shutdown |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102818053B (en) | 2014-03-19 |
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