CN102818053B - Voltage regulator and cut-off valve thereof - Google Patents
Voltage regulator and cut-off valve thereof Download PDFInfo
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- CN102818053B CN102818053B CN201210323263.7A CN201210323263A CN102818053B CN 102818053 B CN102818053 B CN 102818053B CN 201210323263 A CN201210323263 A CN 201210323263A CN 102818053 B CN102818053 B CN 102818053B
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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 through the gas flow of modulating valve, to make to export the equipment that combustion gas keeps authorized pressure by automatic change.Conventional pressure governor has two kinds; be a pressure governor that only includes modulating valve, another kind is the pressure governor that comprises modulating valve and two kinds of valve mechanisms of cut-off valve, when downstream gaseous-pressure surpasses setting pressure; cut-off valve can block source of the gas automatically, plays 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, this pressure governor comprises modulating valve and cut-off valve, wherein, cut-off valve comprises valve body 101, be arranged on cut-out valve port 102 on valve body 101 and valve assembly for cutting off valve port 102 sealings and contact, this valve assembly comprises the top that cuts off pull bar 104 and be arranged on cut-out pull bar 104, the flap 103 that top is 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, cutting off pull bar 104 can move towards the direction near cutting off valve port 102, 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, and by being set in the O RunddichtringO 105 in the conical surface outside of flap 103, flap 103 is contacted with the surrounding sealing of cutting off valve port 102, to realize closing of cut-off valve.
But, because above-mentioned O RunddichtringO is set in the conical surface outside of flap, so pressure governor is in use, because of the phenomenon that brush effect may cause the slippage of O RunddichtringO of blowing of air-flow, thereby make cutter lose cutting function, to people, bring potential safety hazard.In addition, be exposed at outside O RunddichtringO on more easily pile up dirt; When cut-off valve cuts out, the dirt carrying on 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 to provide a kind of cut-off valve of pressure governor, to 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, be current those skilled in the art technical problems urgently 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, to 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.
The present invention also provides a kind of pressure governor with above-mentioned cut-off valve.
In order to achieve the above object, the invention provides following technological scheme:
A cut-off valve for pressure governor, comprising:
Valve body, is provided with gas-entered passageway on this valve body;
Be arranged on the cut-out valve port on described valve body, the cavity of described cut-out valve port is connected with described gas-entered passageway;
Valve assembly, this valve assembly outside is arranged with the first seal ring, and described cut-off valve is when cut out, and described valve assembly contacts with described cut-out sealing valve port by described the first seal ring;
Also comprise:
Be arranged on the safety cover on described cut-out valve port or described valve body; this safety cover has the guide section being slidably matched with described valve assembly; between described guide section and described cut-out valve port, be provided with interval; and when described cut-off valve is opened; described guide section is set in the outside of described valve assembly, and described the first seal ring is between described guide section and described valve assembly.
Preferably, in above-mentioned cut-off valve, described valve assembly comprises:
The cut-out pull bar that can move along its axial direction, is provided with the location shaft shoulder on this cut-out pull bar;
Be set in the back lash spring seat on described cut-out pull bar;
Be set in the cut-out spring on described back lash spring seat, and described cut-out spring is positioned at shaft shoulder place, described location away from one end of described back lash spring seat;
Be set in the piston valve in outside, described cut-out pull bar top, between described cut-out pull bar and described piston valve, can relatively along described axial direction, slide, and the location end face on described piston valve with the described back lash spring seat in location, the arranged outside of described piston valve has places the first ring connected in star that described the first seal ring is used, when described cut-off valve is opened, described guide section is set in the outside of described piston valve.
Preferably, in above-mentioned cut-off valve, described valve assembly also comprises:
Be located at the top of described cut-out pull bar, the release flap between described cut-out pull bar and described piston valve; The top arranged outside of this release flap has the second annular groove, and when described cut-off valve cuts out, described release flap contacts with described piston valve sealing by the second seal ring being set in described the second annular groove; Between described release flap and described piston valve, be provided with and be communicated in the cavity of described cut-out valve port and the discharge channel between described gas-entered passageway.
Preferably, in above-mentioned cut-off valve, the top of described piston valve is provided with and stops the upper position-arresting end face of described release flap and described piston valve relative sliding and prevent that described release flap from departing from the lower position-arresting end face of described piston valve;
On described release flap, be provided with the annular outer being fastened between described upper position-arresting end face and described lower position-arresting end face and rise, described annular outer rises and is positioned at described the second annular groove away from a side of described cut-out valve port.
Preferably, in above-mentioned cut-off valve, in the direction of extending along the Xiang Qi bottom, top of described release flap, between described release flap and described piston valve, be also disposed with the release plug screw of release packing ring and the described release packing ring of compression;
Wherein, described release packing ring described annular outer rise and described upper position-arresting end face between; On described release plug screw, be provided with described lower position-arresting end face; On described release packing ring, be provided with along described axial direction and extend, the packing ring release through hole that top is connected with the cavity of described cut-out valve port; On described release plug screw, be provided with along described axial direction and extend, be communicated in the bottom of described packing ring release through hole and the plug screw discharge channel between described gas-entered passageway; And described annular outer rises and can contact with the bottom end opening sealing of described packing ring release through hole.
Preferably, in above-mentioned cut-off valve, described the first seal ring and described the second seal ring are O RunddichtringO.
Preferably, in above-mentioned cut-off valve, described cut-out pull bar is connected by screw-thread fit with described release flap.
Preferably, in above-mentioned cut-off valve, described safety cover is fixed on described cut-out valve port by hexagon socket head cap screw.
Preferably, in above-mentioned cut-off valve, on described cut-out valve port, be provided with when described cut-off valve cuts out, can connect with described valve assembly and seal the annular internal projection contacting.
From above-mentioned technological scheme, can find out, the cut-off valve that the invention provides pressure governor has the safety cover being arranged on cut-out valve port or valve body, and when cut-off valve is opened, the guide section of safety cover is set in the outside of valve assembly, the first seal ring is between guide section and valve assembly, now safety cover can play to the first seal ring the effect of protection, avoid it directly exposed in outside, air-flow can not directly blow brush to the first seal ring, therefore, the cut-off valve that is exposed at outside with seal ring of the prior art is compared, the cut-off valve that the invention provides pressure governor can reduce the phenomenon of the seal ring slippage that the brush effect of blowing of air-flow causes, and then the Security that has improved pressure governor.
In addition, due to when cut-off valve is opened, the first seal ring is positioned at the guide section of safety cover, has reduced the accumulation of dirt on the first seal ring, has improved sealing when cut-off valve is closed, and then has reduced potential safety hazard.
The present invention also provides a kind of pressure governor, comprises cut-off valve, and described cut-off valve is above-mentioned any cut-off valve, and because above-mentioned cut-off valve has above-mentioned effect, the pressure governor with above-mentioned cut-off valve has same effect, therefore repeat no more herein.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technological scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
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 present invention;
Fig. 3 is the structure for amplifying schematic diagram of A part in Fig. 2;
Fig. 4 is the structural representation of the valve assembly that provides of the embodiment of the present invention.
Embodiment
The embodiment of the present 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 causes, and then the Security that improves pressure governor.
For making object, technological scheme and the advantage of the embodiment of the present invention clearer, below in conjunction with the accompanying drawing in the embodiment of the present invention, technological scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiments.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment who obtains under creative work prerequisite, belong to the scope of protection of the invention.
Please refer to accompanying drawing 2-4, the cut-off valve of the pressure governor that the embodiment of the present invention provides, comprises valve body 1, cuts off valve port 2, valve assembly and safety cover 3; Wherein, on valve body 1, be provided with gas-entered passageway 14; Cut off that valve port 2 is arranged on valve body 1 and it, cavity is connected with gas-entered passageway 14; Valve assembly outside is arranged with the first seal ring 8, and cut-off valve is when cut out, valve assembly by the 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 valve body 1; it has the guide section 31 being slidably matched with valve assembly; between this guide section 31 and cut-out valve port 2, be provided with interval; and when cut-off valve is opened; guide section 31 is set in the outside of valve assembly, and the 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 present invention provides is opened, the guide section 31 of safety cover 3 is set in the outside of valve assembly, the first seal ring 8 is between guide section 31 and valve assembly, be valve assembly with and on the first seal ring 8 be all positioned at guide section 31, like this, after combustion gas enters into gas-entered passageway 14, the interval that can flow through between guide section 31 and cut-out valve port 2, then enter into the cavity that cuts off valve port 2, finally flow to the downstream gas path of pressure governor; When above-mentioned cut-off valve cuts out, valve assembly can be along upwards (to the direction near cutting off valve port 2) slip of guide section 31, until being positioned at, valve assembly cuts off valve port 2 places, and realize with the sealing of cutting off valve port 2 and contacting by the first seal ring 8, and then stop air-flow to enter the cavity that cuts off valve port 2, thereby realized the cutting function of cut-off valve.
In summary, because providing the cut-off valve of pressure governor, the embodiment of the present invention there is 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, the first seal ring 8 is between guide section 31 and valve assembly, now safety cover 3 can play to the first seal ring 8 effect of protection, avoid it directly exposed in outside, air-flow can not directly blow brush to the first seal ring 8, therefore, the cut-off valve that is exposed at 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 present invention provides the cut-off valve of pressure governor can reduce air-flow causes, and then the Security that has improved pressure governor.
In addition, due to when cut-off valve is opened, the first seal ring 8 is positioned at the guide section 31 of safety cover 3, has reduced the accumulation of dirt on the first seal ring 8, has improved sealing when cut-off valve is closed, and then has reduced potential safety hazard.
Preferably, in the cut-off valve that above-described embodiment provides, valve assembly comprises cut-out pull bar 4, back lash spring seat 6, cuts off spring 5 and piston valve 9: wherein, cut off on pull bar 4 and be provided with and locate the shaft shoulder and can move along its axial direction; Back lash spring seat 6 is set in and cuts off on pull bar 4; Cut off spring 5 and be set on back lash spring seat 6, and its one 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 piston valve 9 and can relatively along the axial direction that cuts off pull bar 4, slide, and the location end face on piston valve 9 with location back lash spring seat 6, its arranged outside has the first ring connected in star of placing the first seal ring 8 use, when cut-off valve is opened, guide section 31 is set in the outside of piston valve 9.It should be noted that, the top that cuts off pull bar 4 is that it is near the one end that cuts off valve port 2.
When the downstream of pressure governor gaseous-pressure is less than setup pressure value, pressure governor is normally worked, the cut-off valve that the embodiment of the present invention provides is in opening state, be piston valve 9 and on the first seal ring 8 be all positioned at guide section 31 places, after combustion gas enters into gas-entered passageway 14, the interval that can flow through between guide section 31 and cut-out valve port 2, then enters into the cavity that cuts off valve port 2, finally flows to the downstream gas path of pressure governor.
When the downstream of pressure governor gaseous-pressure is greater than setup pressure value, act on the pressure cutting off on pull bar 4 and be greater than setup pressure value, cut off pull bar 4 can move up (moving to the direction near cutting off valve port 2), compress the cut-out spring 5 between back lash spring seat 6 and the location shaft shoulder thereof, now cut off spring 5 moves up promotion back lash spring seat 6 and cut-out pull bar 4 simultaneously, while moving on to the end, location of piston valve 9 on 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, until on while moving on to the position that cuts off valve port 2, piston valve 9 can contact with 2 sealings of cut-out valve port by the first seal ring 8, both realized the operation of automatically closing cut-off valve, automatically cut off source of the gas, 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 provides in background technique, or other can realize and the structural type of cutting off valve port 2 sealings and contacting, and the embodiment of the present invention does not limit this.
When need to be to when the cut-off valve of closed condition be opened, piston valve 9 need to be withdrawn to the position that cuts off valve port 2, owing to cutting off in the cavity of valve port 2 in negative pressure state, if (to the direction away from cutting off valve port 2) lifts and cuts off pull bar 4 and piston valve 9 directly downwards, need to apply very large power, waste time and energy.
In order to address the above problem, the valve assembly that above-described embodiment provides also comprises: be located at the top that cuts off pull bar 4, at the release flap 11 cutting off between pull bar 4 and piston valve 9; The top arranged outside of this release flap 11 has the second annular groove, and when cut-off valve cuts out, release flap 11 contacts with piston valve 9 sealings by the second seal ring 12 being set in the second annular groove; Between release flap 11 and piston valve 9, be provided with to be communicated in and cut off the cavity of valve port 2 and the discharge channel between gas-entered passageway 14.It should be noted that, the top of release flap 11 is close one end that cuts off valve port 2 on it.
When use has the cut-off valve of above-mentioned valve assembly, not only needing to meet piston valve 9 is sealed and is contacted by the first seal ring 8 with cutting off between valve port 2, also need to meet between release flap 11 and piston valve 9 and contact by the second seal ring 12 sealings, now, not only can stop air-flow to enter from the space between piston valve 9 and cut-out valve port 2 cavity that cuts off valve port 2, can also stop air-flow from discharge channel, to enter the cavity that cuts off valve port 2, thereby realize closing of cut-off valve.
When need to be when the cut-off valve of closed condition be reopened, only need directly to lift downwards and cut off pull bar 4, make the second seal ring 12 depart from piston valve 9, even there is space between release flap 11 and piston valve 9, now discharge channel is opened, air-flow can enter in the cavity that cuts off valve port 2 by this discharge channel, improved the negative pressure state in the cavity that cuts off valve port 2, reduced the active force that need to apply, thereby be convenient to lift piston valve 9 downwards, piston valve 9 is pulled back to its initial position, and then realize reopening of cut-off valve.
In order further to optimize technique scheme, in the cut-off valve that above-described embodiment provides, the top of piston valve 9 is provided with and stops the upper position-arresting end face of release flap 11 and piston valve 9 relative slidings and prevent that release flap 11 from departing from the lower position-arresting end face of piston valves 9; On release flap 11, be provided with the annular outer being fastened between upper position-arresting end face and lower position-arresting end face and rise, annular outer rises and is positioned at the second annular groove away from a side of cutting off valve port 2.Like this, when release flap 11 and piston valve 9 relative sliding, annular outer has been risen and has been limited between upper position-arresting end face and lower position-arresting end face, and can prevent that release flap 11 from departing from piston valve 9 when sliding, and improved its safety type.
In the present embodiment, piston valve 9 center positions are provided with the connecting through hole being communicated between its top and bottom, this connecting through hole comprises successively from Xiang Qi bottom, its top: the first through hole that aperture increases progressively successively, the second through hole and third through-hole, as shown in Figure 3 and Figure 4, this connecting through hole can be used as the discharge channel that passes into gas in the cavity of valve port 2 to cutting off.Meanwhile, above-mentioned upper position-arresting end face is the connecting end surface being connected between the first through hole and the second through hole; Be connected in the location end face that the connecting end surface between the second through hole and third through-hole is location back lash spring seat 6 use; Above-mentioned lower position-arresting end face can be the annular end face protruding in the second through hole, and the positioning block of positioning ring and so on can also be set on the hole wall of the second through hole.
Preferably, in the cut-off valve that above-described embodiment provides, in the direction of extending along the Xiang Qi bottom, top of release flap 11, between release flap 11 and piston valve 9, be also disposed with the release plug screw 13 of release packing ring 10 and compression release packing ring 10; Wherein, release packing ring 10 annular outer rise and upper position-arresting end face between; On release plug screw 13, be provided with lower position-arresting end face; On release packing ring 10, be provided with along axial direction and extend, the packing ring release through hole that top is connected with the cavity that cuts off valve port 2; On release plug screw 13, be provided with along axial direction and extend, be communicated in the bottom of packing ring release through hole and the plug screw discharge channel between gas-entered passageway 14; And annular outer rises and can contact with the bottom end opening sealing of packing ring release through hole.
Now, release packing ring 10 can cushion the active force between annular outer lug and the upper position-arresting end face of piston valve 9, avoid annular outer to rise directly and upper position-arresting end contact, the annular outer excessive caused because of active force plays distortion, improved the Security of cut-off valve.Meanwhile, release plug screw 13 has the release of compression packing ring 10, prevents the effect that it comes off.And packing ring release through hole and plug screw discharge channel form discharge channel jointly, this is the another kind of implementation of discharge channel in the present embodiment, and it can also be other implementation, sets forth no longer one by one herein.In addition,, when cut-off valve cuts out, annular outer rises and can contact with the bottom end opening sealing of packing ring release through hole, can further stop air-flow from discharge channel, to enter the cavity that cuts off valve port 2, the Security that has further improved cut-off valve.
Preferably, in the cut-off valve that the embodiment of the present invention provides, the first seal ring 8 and the second seal ring 12 are O RunddichtringO.Both can also or can meet the seal ring of other kinds of sealability for y-type seal ring.
In the cut-off valve that above-described embodiment provides, cut off pull bar 4 and be connected by screw-thread fit with release flap 11.As shown in Figure 3 and Figure 4, the top that cuts off pull bar 4 has threaded stem section, and is provided with the tapped hole matching with threaded stem section on release flap 11, when to be installed, directly above-mentioned threaded stem section is screwed in above-mentioned tapped hole.Certainly, cut off pull bar 4 and link together with the mode that release flap 11 can also weld or rivet, can realize by other linkage structure both yet and be connected, the present embodiment does not limit.
Concrete, in the cut-off valve that above-described embodiment provides, safety cover 3 is fixed on and is cut off on valve port 2 by hexagon socket head cap screw 7.This mounting type is simple, and cost-saving.Safety cover 3 can also weld, riveted joint.Or being threaded of other structures realized the installation of safety cover 3; Meanwhile, safety cover 3 can also be arranged on valve body 1.
In order realize to cut off being better sealed and matched, cutting off on valve port 2 and being provided with when cut-off valve cuts out of valve port 2 and valve assembly, can connect with valve assembly and seal the annular internal projection contacting.Now, 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 present invention also provides a kind of pressure governor, comprises cut-off valve, the cut-off valve that this cut-off valve provides for above-mentioned any one embodiment.
The cut-off valve that above-mentioned pressure governor adopts the present embodiment to provide, can reduce the phenomenon of the seal ring slippage that the brush effect of blowing of air-flow causes, and then the Security that has improved pressure governor, its advantage is brought by cut-off valve, concrete please refer to part relevant in above-described embodiment, at this, just repeat no more.
In this specification, each embodiment adopts the mode of going forward one by one to describe, and each embodiment stresses is the difference with other embodiments, between each embodiment identical similar part mutually referring to.
Above-mentioned explanation to the disclosed embodiments, makes professional and technical personnel in the field can realize or use the present invention.To these embodiments' multiple modification, will be apparent for those skilled in the art, General Principle as defined herein can, in the situation that not departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention will can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. a cut-off valve for pressure governor, comprising:
Valve body (1), is provided with gas-entered passageway (14) on this valve body (1);
Be arranged on the cut-out valve port (2) on described valve body (1), the cavity of described cut-out valve port (2) is connected with described gas-entered passageway (14);
Valve assembly, this valve assembly outside is arranged with the first seal ring (8), and described cut-off valve is when cut out, and described valve assembly is sealed and contacts with described cut-out valve port (2) by described the first seal ring (8);
It is characterized in that, also comprise:
Be arranged on the safety cover (3) on described cut-out valve port (2) or described valve body (1); this safety cover (3) has the guide section (31) being slidably matched with described valve assembly; between described guide section (31) and described cut-out valve port (2), be provided with interval; and when described cut-off valve is opened; described guide section (31) is set in the outside of described valve assembly, and described the first seal ring (8) is positioned between described guide section (31) and described valve assembly.
2. cut-off valve according to claim 1, is characterized in that, described valve assembly comprises:
The cut-out pull bar (4) that can move along its axial direction, is provided with the location shaft shoulder on this cut-out pull bar (4);
Be set in the back lash spring seat (6) on described cut-out pull bar (4);
Be set in the cut-out spring (5) on described back lash spring seat (6), and described cut-out spring (5) is positioned at shaft shoulder place, described location away from one end of described back lash spring seat (6);
Be set in the piston valve (9) in outside, described cut-out pull bar (4) top, between described cut-out pull bar (4) and described piston valve (9), can relatively along described axial direction, slide, and the location end face on described piston valve (9) with the described back lash spring seat in location (6), the arranged outside of described piston valve (9) has the first ring connected in star of placing described the first seal ring (8) use, when described cut-off valve is opened, described guide section (31) is set in the outside of described piston valve (9).
3. cut-off valve according to claim 2, is characterized in that, described valve assembly also comprises:
Be located at the top of described cut-out pull bar (4), be positioned at the release flap (11) between described cut-out pull bar (4) and described piston valve (9); The top arranged outside of this release flap (11) has the second annular groove, and when described cut-off valve cuts out, described release flap (11) contacts with described piston valve (9) sealing by the second seal ring (12) being set in described the second annular groove; Between described release flap (11) and described piston valve (9), be provided with and be communicated in the cavity of described cut-out valve port (2) and the discharge channel between described gas-entered passageway (14).
4. cut-off valve according to claim 3, it is characterized in that, the top of described piston valve (9) is provided with and stops the upper position-arresting end face of described release flap (11) and described piston valve (9) relative sliding and prevent that described release flap (11) from departing from the lower position-arresting end face of described piston valve (9);
On described release flap (11), be provided with the annular outer being fastened between described upper position-arresting end face and described lower position-arresting end face and rise, described annular outer rises and is positioned at described the second annular groove away from a side of described cut-out valve port (2).
5. cut-off valve according to claim 4, it is characterized in that, in the direction of extending along the Xiang Qi bottom, top of described release flap (11), between described release flap (11) and described piston valve (9), be also disposed with the release plug screw (13) of release packing ring (10) and the described release packing ring of compression (10);
Wherein, described release packing ring (10) described annular outer rise and described upper position-arresting end face between; On described release plug screw (13), be provided with described lower position-arresting end face; On described release packing ring (10), be provided with along described axial direction and extend, the packing ring release through hole that top is connected with the cavity of described cut-out valve port (2); On described release plug screw (13), be provided with along described axial direction and extend, be communicated in the bottom of described packing ring release through hole and the plug screw discharge channel between described gas-entered passageway (14); And described annular outer rises and can contact with the bottom end opening sealing of described packing ring release through hole.
6. according to the cut-off valve described in claim 3-5 any one, it is characterized in that, described the first seal ring (8) and described the second seal ring (12) are O RunddichtringO.
7. cut-off valve according to claim 6, is characterized in that, described cut-out pull bar (4) is connected by screw-thread fit with described release flap (11).
8. according to the cut-off valve described in claim 1-5 any one, it is characterized in that, described safety cover (3) is fixed on described cut-out valve port (2) by hexagon socket head cap screw (7).
9. cut-off valve according to claim 1, is characterized in that, is provided with on described cut-out valve port (2) when described cut-off valve cuts out, and can connect with described valve assembly and seal the annular internal projection contacting.
10. a pressure governor, comprises cut-off valve, it is characterized in that, described cut-off valve is the cut-off valve described in the claims 1-9 any one.
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 |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210323263.7A CN102818053B (en) | 2012-09-04 | 2012-09-04 | Voltage regulator and cut-off valve thereof |
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| Publication Number | Publication Date |
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| CN102818053A CN102818053A (en) | 2012-12-12 |
| CN102818053B true CN102818053B (en) | 2014-03-19 |
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| CN201210323263.7A Active CN102818053B (en) | 2012-09-04 | 2012-09-04 | Voltage regulator and cut-off valve thereof |
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| RO134311A2 (en) * | 2018-10-10 | 2020-07-30 | Emerson Process Management Regulator Technologies Inc. | Slam shut-off safety assembly for providing redundant safety switch-off |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001336655A (en) * | 2000-05-29 | 2001-12-07 | Matsushita Electric Ind Co Ltd | Shutoff valve |
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2012
- 2012-09-04 CN CN201210323263.7A patent/CN102818053B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2001-336655A 2001.12.07 |
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| CN102818053A (en) | 2012-12-12 |
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