CN202371231U - Balanced pneumatic one-way stop valve - Google Patents
Balanced pneumatic one-way stop valve Download PDFInfo
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- CN202371231U CN202371231U CN2011205438391U CN201120543839U CN202371231U CN 202371231 U CN202371231 U CN 202371231U CN 2011205438391 U CN2011205438391 U CN 2011205438391U CN 201120543839 U CN201120543839 U CN 201120543839U CN 202371231 U CN202371231 U CN 202371231U
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- valve
- valve seat
- spool
- gland
- gas
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Abstract
The utility model relates to a balanced pneumatic one-way stop valve. The balanced pneumatic one-way stop valve is mainly characterized by comprising a cylinder module, a valve module, a valve body 15, a manual switch module 16 and a safety plug module 24, wherein a left gas receiving port 25 and a right gas receiving port 26 are formed at the upper part of the valve body 15; the valve module comprises a valve core 11; an axial central through hole 28 and a vertical through hole 27 are formed within the valve core; and an annular groove 29 is formed in the middle of the external side of the valve core 11; by sufficiently using a gas balancing principle, the gas can be controlled to automatically open and close the valve at a low pressure (not more than 0.6 MPa); the valve has a one-way circulating function; a control cylinder does not need to work when an air bottle is inflated; the valve is automatically opened under the effect of inflating pressure and can be automatically closed after the inflating is finished; and a push rod sealing piece 21 has an anti-Glyd ring sealing structure in which a wear ring is inside and an elastic O-shaped sealing ring is outside. The balanced pneumatic one-way stop valve provided by the utility model has the advantages of novel and compact structure, small wear, long service life, high reliability, good safety and the like.
Description
Technical field
The utility model relates to a kind of balanced type gas control unidirectional stop valve, and it is adapted to especially realize under the low controlling-pressure that compressed natural gas boundling gas cylinder carries out the automatic control of charge/discharge gas simultaneously.
Background technique
Along with rock gas becomes one of main green clean energy resource of China, the container of accumulating compressed natural gas is developed by the mode of big gas tank to the many gas cylinders boundling bottle group that connects and composes through cylinder manifold.Because the gas cylinder quantity of gas cylinder boundling bottle group is many, make that to get moral point many, like the employing conventional valves gas cylinder is carried out charge/discharge gas, no matter be machinery or manual inflation/venting, efficient all is extremely low.The patent of patent No. ZL201010237986.6 discloses a kind of pressurized gas boundling bottle group special valve and concentrated pneumatic control method thereof; Though it adopts the centralized control of concentrating pneumatic control mode can realize many valves; But because pneumatic to control thrust bigger; Need independently high-pressure air source (>=2MPa), valve inner push-rod Sealing is fragile, it is all not very good no matter the gas control cost still is Security, working efficiency.For addressing these problems, satisfy compressed natural gas boundling bottle group and under low-pressure gas control, can realize that a plurality of gas cylinders carry out charge/discharge gas simultaneously, develop balanced type gas control unidirectional stop valve.
Summary of the invention
The utility model technical problem to be solved is that a kind of balanced type gas control unidirectional stop valve will be provided, and its valve core inside is designed with axial central through hole and vertical through hole, control gaseous can be under low pressure (≤0.6MPa) realize the automatic opening-closing of valve; Available less cylinder bore (≤φ 35mm) makes valve mechanism compact, and valve has the one-way flow function simultaneously; When being the gas cylinder inflation; Control cylinder does not need work, and valve is opened under the inflation pressure effect automatically, and inflation can be closed after accomplishing automatically.
The technological scheme that its technical problem that solves the utility model adopts is: it comprises cylinder assembly, valve member, valve body, hand switch assembly, safe plug screw assembly,
Hand switch assembly, safe plug screw assembly are loaded in the corresponding mounting hole in valve body side, and the valve body upper design has a left side to connect gas port, the right side connects gas port, and a left side connects gas port and all communicates with the inner chamber of valve body with the right gas port that connects,
Described cylinder assembly comprises cylinder block, piston, piston packing, snap ring, backing plate, supporting spiral shell seat, lock screw,
Piston packing is loaded in the radial ringed groove of piston, and backing plate is loaded on the inner chamber of piston and tightens through snap ring,
The piston that piston packing, backing plate are housed is loaded on the inner chamber of cylinder block, and supporting spiral shell seat is bolted in the outside thread of valve seat gland and carries out lateral fixation by lock screw,
The cylinder block internal thread is bolted in supporting spiral shell seat, and the outer side elevation of cylinder block has a control gas source interface,
Described valve member comprises Returnning spring, valve seat gland, valve seat gland ring, spool, valve seat, conical seal ring, valve gland, valve seat insert, valve core seal ring, spring seat, cushion pad, push rod seal spare, screw plug, push rod,
Valve seat is loaded on the middle part of body interior chamber, between valve seat and the body and between valve seat and the valve seat gland valve seat insert is housed, and the surface of contact of valve seat contact conical seal ring is a conical surface,
The spool level is loaded on valve seat; Valve core seal ring is equipped with at the middle part of spool; Valve core inside is designed with axial central through hole, and spool has the vertical through hole that is mutually 90 ° with axial central through hole near the tail end position, and the outer middle side part of spool is designed with circular groove; Spool is packed into and is formed an air cavity between the circular groove and valve seat behind the valve seat
Conical seal ring is loaded on the front end seam of spool, and valve gland screw thread spinning presses conical seal ring in the spool front end, and the Surface Taper of conical seal ring contacts conical seal ring with valve seat the tapering of the contact conical surface is identical,
Returnning spring is set in the rear end of spool, and an end of Returnning spring leans valve seat, and the other end leans the spring seat of spinning in the spool rear end,
The valve seat gland ring is loaded in the radial ringed groove of valve seat gland front end, and valve seat gland external thread bolt connection is in body, and there is a cylinder step in the outside of valve seat gland, and cushion pad is loaded on the step seam in the valve seat gland outside,
Push rod is loaded in the horizontal center through hole of valve seat gland; Push rod seal spare is set in push rod and is loaded on the mounting hole of valve seat gland; Screw in screw plug and compress push rod seal spare; Push rod seal spare adopts wear ring at interior, elasticity O RunddichtringO anti-Glais ring sealing configuration outside, when push rod receives external force can about move freely.
When boundling bottle group gas cylinder is carried out exhaust; The external control source of the gas inserts from the gas source interface of the cylinder block of a plurality of gas cylinders of bottle group respectively simultaneously; The control source of the gas promotes the piston acting, and piston promotes push rod, and the spring force promotion spool that push rod overcomes Returnning spring moves right; The conical seal ring of spool front end breaks away from the surface of contact of valve seat, and the valve of a plurality of gas cylinders is in the bidirectional opening state simultaneously.Because valve core inside is designed with axial central through hole and vertical through hole, the gas pressure intensity of spool right ends reaches balance, and the external control source of the gas can be under low pressure, and (≤the spring force that 0.6MPa) only need overcome Returnning spring gets final product Open valve.After exhaust is accomplished, the closing control source of the gas, the anti-valve core movement that pushes away of the spring force of Returnning spring, the surface of contact of the conical seal ring applying valve seat of spool front end, the valve of a plurality of gas cylinders is in closed condition simultaneously.
When boundling bottle group gas cylinder is inflated; Compressed natural gas connects the gas port or the right side and connects gas port and feed from the left side of valve body both sides; When compressed natural gas gets into the air cavity of circular groove and valve seat formation; The spring force that self pressure of compressed natural gas overcomes Returnning spring promotes spool and moves right, and the conical seal ring of spool front end breaks away from the surface of contact of valve seat, and the valve of a plurality of gas cylinders is in the bidirectional opening state simultaneously.The compressed natural gas that charges into is divided into two the tunnel after getting into valve; One the tunnel gets in the gas cylinder, and another road compressed natural gas connects gas port shunting output from another of valve body, gets into next gas cylinder through the gas circuit connecting tube; And the like, realization boundling bottle is organized the synchronous inflation of a plurality of gas cylinders.After inflation is accomplished; The interior compressed natural gas pressure of gas cylinder this moment reaches the outside and charges into gas pressure intensity; Spool right ends gas pressure intensity reaches balance, and the spring force of Returnning spring promotes valve core movement, the surface of contact of the conical seal ring applying valve seat of spool front end; The valve of a plurality of gas cylinders is in closed condition simultaneously, and the inflation of boundling gas cylinder finishes.Whole gas replenishment process need not insert the external control source of the gas and can accomplish automatically, and cylinder assembly does not have any action.
When not inserting the external control source of the gas, balanced type gas control unidirectional stop valve is a normally off.The hand switch assembly is a normally open, when carrying out the cylinder valve maintenance or emergency condition occurring, but hand switch assembly emergency shutdown valve.When the gas cylinder internal air pressure was too high, the timely release pressure of safe plug screw assembly can prevent safety problem effectively.
The utility model is compared the beneficial effect that is produced with existing technology:
1, spool adopts the center through hole structure, makes full use of the gas equilibrium principle, pneumatic control system only need adopt low pressure (≤0.6MPa) gas get final product, can effectively reduce the gas control cost, the raising security of system.
2, the valve push rods Sealing adopt wear ring outside anti-Glais ring sealing configuration of interior, elasticity O RunddichtringO (Glais ring that generally is used for the hole sealing be wear ring outside; Elastic ring is interior); Can adapt to-50 ℃～100 ℃ the Environmental Conditions and the operating mode of pressurized gas (20MPa), efficiently solve the flimsy problem of valve inner push-rod Sealing.
3, valve mechanism is novel compact, and it is little wear and tear, and the life-span height has that reliability height, Security are good, detection and an advantage such as easy to maintenance.
Description of drawings
Fig. 1 is the structural representation of the utility model balanced type gas control unidirectional stop valve.
Fig. 2 is the A-A view of Fig. 1.
Fig. 3 is the B-B view of Fig. 1.
Fig. 4 is the structural drawing of spool 11 among Fig. 1.
Fig. 5 is the partial structurtes figure of push rod seal coil assembly 21 among Fig. 1, push rod 22.
Fig. 6 is the utility model balanced type gas control unidirectional stop valve exhaust condition figure.
B-B view when Fig. 7 is the utility model balanced type gas control unidirectional stop valve inflated condition.
Embodiment
Further describe below in conjunction with the most preferred embodiment of accompanying drawing the utility model.
Referring to Fig. 1, Fig. 2, a kind of balanced type gas control unidirectional stop valve, it comprises cylinder assembly, valve member, valve body 15, hand switch assembly 16, safe plug screw assembly 24.
Referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4, cylinder assembly comprises cylinder block 1, piston 2, piston packing 3, snap ring 4, backing plate 5, supporting spiral shell seat 6, lock screw 7.Piston packing 3 is loaded in the radial ringed groove of piston 2; Backing plate 5 is loaded on the inner chamber of piston 2 and tightens through snap ring 4; The piston 2 that piston packing 3, backing plate 5 are housed is loaded on the inner chamber of cylinder block 1; Supporting spiral shell seat 6 is bolted in the outside thread of valve seat gland 9 and carries out lateral fixation by lock screw 7, and cylinder block 1 internal thread is bolted in supporting spiral shell seat 6, and the outer side elevation of cylinder block 1 has a control gas source interface.
Described valve member comprises Returnning spring 8, valve seat gland 9, valve seat gland ring 10, spool 11, valve seat 12, conical seal ring 13, valve gland 14, valve seat insert 17, valve core seal ring 18, spring seat 19, cushion pad 20, push rod seal spare 21, screw plug 22, push rod 23.
Returnning spring 8 is set in the rear end of spool 11, and an end of Returnning spring 8 leans valve seat 12, and the other end leans the spring seat 19 of spinning in spool 11 rear ends.
Valve seat gland ring 10 is loaded in the radial ringed groove of valve seat gland 9 front ends; Valve seat gland 9 external thread bolt connections are in body 15; There is a cylinder step in the outside of valve seat gland 9; Cushion pad 20 is loaded on the step seam in valve seat gland 9 outsides, cushion pad 20 when feeding control gaseous to 2 buffer functions of piston.
Referring to Fig. 1, Fig. 5; Push rod 23 is loaded in the horizontal center through hole of valve seat gland 9; Push rod seal spare 21 is set in push rod 23 and is loaded on the mounting hole of valve seat gland 9; Screw plug 22 spinnings are in the mounting hole of valve seat gland 9 and compress push rod seal spare 21, and push rod seal spare 21 adopts wear rings at interior, elasticity O RunddichtringO anti-Glais ring sealing configuration outside, when push rod 3 receives external force can about move freely.
Referring to Fig. 6; When boundling bottle group gas cylinder was carried out exhaust, the external control source of the gas inserted from the gas source interface of the cylinder block 1 of a plurality of gas cylinders of bottle group respectively simultaneously, and the control source of the gas promotes piston 2 actings; Piston 2 promotes push rod 23; The spring force promotion spool 11 that push rod 23 overcomes Returnning spring 8 moves right, and the conical seal ring 13 of spool 11 front ends breaks away from the surface of contact of valve seats 12, and the valve of a plurality of gas cylinders is in the bidirectional opening state simultaneously.Because spool 11 indoor designs have axial central through hole 28 and vertical through hole 27, the gas pressure intensity of spool 11 right ends reaches balance, and the external control source of the gas can be under low pressure, and (≤the spring force that 0.6MPa) only need overcome Returnning spring 8 gets final product Open valve.After exhaust is accomplished, the closing control source of the gas, the anti-spool 11 that pushes away of the spring force of Returnning spring 8 moves, the surface of contact of the conical seal ring 13 applying valve seats 12 of spool 11 front ends, the valve of a plurality of gas cylinders is in closed condition simultaneously.
Referring to Fig. 7; When boundling bottle group gas cylinder is inflated; Compressed natural gas connects a gas port 26 or a left side and connects gas port 25 and feed from the right side of valve body 15 both sides, when compressed natural gas got into the air cavity that circular groove 29 and valve seat 12 form, the spring force that self pressure of compressed natural gas overcomes Returnning spring 8 promoted spool 11 and moves right; The conical seal ring 13 of spool 11 front ends breaks away from the surface of contact of valve seat 12, and the valve of a plurality of gas cylinders is in the bidirectional opening state simultaneously.The compressed natural gas that charges into is divided into two the tunnel after getting into valve; One the tunnel gets in the gas cylinder, and another road compressed natural gas connects gas port shunting output from another of valve body 15, gets into next gas cylinder through the gas circuit connecting tube; And the like, realization boundling bottle is organized the synchronous inflation of a plurality of gas cylinders.After inflation is accomplished; The interior compressed natural gas pressure of gas cylinder this moment reaches the outside and charges into gas pressure intensity; Spool 11 right ends gas pressure intensities reach balance, and the spring force of Returnning spring 8 promotes spool 11 motions, the surface of contact of the conical seal ring 13 applying valve seats 12 of spool 11 front ends; The valve of a plurality of gas cylinders is in closed condition simultaneously, and the inflation of boundling gas cylinder finishes.Whole gas replenishment process need not insert the external control source of the gas and can accomplish automatically, and cylinder assembly does not have any action.
Referring to Fig. 1, Fig. 2, when not inserting the external control source of the gas, balanced type gas control unidirectional stop valve is a normally off.Hand switch assembly 16 is a normally open, when carrying out the cylinder valve maintenance or emergency condition occurring, but hand switch assembly 16 emergency shutdown valves.When the gas cylinder internal air pressure was too high, safe plug screw assembly 24 timely release pressures can prevent safety problem effectively.
Below only be the most preferred embodiment of the utility model, according to above-mentioned design, those skilled in the art also can make various differences or close change and conversion to this, and these changes and conversion all belong to essence of the present invention.
Claims (6)
1. balanced type gas control unidirectional stop valve, it comprises hand switch assembly (16), safe plug screw assembly (24), it is characterized in that it also comprises cylinder assembly, valve member, valve body (15);
Described cylinder assembly comprises cylinder block (1), piston (2), piston packing (3), snap ring (4), backing plate (5), supporting spiral shell seat (6), lock screw (7); Piston packing (3) is loaded in the radial ringed groove of piston (2); Backing plate (5) is loaded on the inner chamber of piston (2) and tightens through snap ring (4); Piston (2) is loaded on the inner chamber of cylinder block (1); Supporting spiral shell seat (6) is bolted in the outside thread of valve seat gland (9) and carries out lateral fixation by lock screw (7), and cylinder block (1) internal thread is bolted in supporting spiral shell seat (6), and the outer side elevation of cylinder block (1) has a control gas source interface;
Described valve member comprises Returnning spring (8), valve seat gland (9), valve seat gland ring (10), spool (11), valve seat (12), conical seal ring (13), valve gland (14), valve seat insert (17), valve core seal ring (18), spring seat (19), cushion pad (20), push rod seal spare (21), screw plug (22), push rod (23);
Valve seat (12) is loaded on the middle part of body (15) internal chamber; Between valve seat (12) and the body (15) and between valve seat (12) and the valve seat gland (9) valve seat insert (17) is housed, the surface of contact of valve seat (12) contact conical seal ring (13) is a conical surface;
Spool (11) level is loaded on valve seat (12), at the middle part of spool (11) valve core seal ring (18) is housed;
Conical seal ring (13) is loaded on the front end seam of spool (11); Valve gland (14) screw thread spinning is in spool (11) front end and press conical seal ring (13), and the Surface Taper of conical seal ring (13) contacts conical seal ring (13) with valve seat (12) the tapering of the contact conical surface is identical;
Returnning spring (8) is set in the rear end of spool (11), and an end of Returnning spring (8) leans valve seat (12), and the other end leans the spring seat (19) of spinning in spool (11) rear end;
Valve seat gland ring (10) is loaded in the radial ringed groove of valve seat gland (9) front end; Valve seat gland (9) external thread bolt connection is in body (15); There is a cylinder step in the outside of valve seat gland (9), and cushion pad (20) is loaded on the step seam in valve seat gland (9) outside;
Push rod (23) is loaded in the horizontal center through hole of valve seat gland (9); Push rod seal spare (21) is set in push rod (23) and is loaded on the mounting hole of valve seat gland (9); Screw plug (22) spinning is in the mounting hole of valve seat gland (9) and compress push rod seal spare (21), push rod (23) receive external force do the time spent can about move freely.
2. balanced type gas control unidirectional stop valve according to claim 1; The upper design that it is characterized in that described valve body (15) has a left side to connect gas port (25), the right side connects gas port (26), a left side connect gas port (25) and the right side connect gas port (26) all and the inner chamber of valve body (15) communicate.
3. balanced type gas control unidirectional stop valve according to claim 1 is characterized in that the indoor design of described spool (11) has axial central through hole (28).
4. balanced type gas control unidirectional stop valve according to claim 1 is characterized in that described spool (11) is having near its tail end Position Design and axial central through hole (28) is mutually 90 ° vertical through hole (27).
5. balanced type gas control unidirectional stop valve according to claim 1; The outer middle side part that it is characterized in that described spool (11) is designed with circular groove (29), and spool (11) is packed into and formed an air cavity between valve seat (12) back circular groove (29) and the valve seat (12).
6. balanced type gas control unidirectional stop valve according to claim 1 is characterized in that described push rod seal spare (21) adopts wear ring at interior, elasticity O RunddichtringO anti-Glais ring sealing configuration outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205438391U CN202371231U (en) | 2011-12-22 | 2011-12-22 | Balanced pneumatic one-way stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205438391U CN202371231U (en) | 2011-12-22 | 2011-12-22 | Balanced pneumatic one-way stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202371231U true CN202371231U (en) | 2012-08-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205438391U Expired - Fee Related CN202371231U (en) | 2011-12-22 | 2011-12-22 | Balanced pneumatic one-way stop valve |
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| Country | Link |
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| CN (1) | CN202371231U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102537433A (en) * | 2011-12-22 | 2012-07-04 | 江南工业集团有限公司 | Balanced air-controlled one-way check valve |
| CN104455472A (en) * | 2014-10-24 | 2015-03-25 | 中国工程物理研究院化工材料研究所 | Charging-discharging valve |
| CN104500822A (en) * | 2014-12-26 | 2015-04-08 | 四川欧迅能源工程科技有限公司 | High-voltage electric stop valve with valve element stress balance |
-
2011
- 2011-12-22 CN CN2011205438391U patent/CN202371231U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102537433A (en) * | 2011-12-22 | 2012-07-04 | 江南工业集团有限公司 | Balanced air-controlled one-way check valve |
| CN102537433B (en) * | 2011-12-22 | 2013-08-28 | 江南工业集团有限公司 | Balanced air-controlled one-way check valve |
| CN104455472A (en) * | 2014-10-24 | 2015-03-25 | 中国工程物理研究院化工材料研究所 | Charging-discharging valve |
| CN104500822A (en) * | 2014-12-26 | 2015-04-08 | 四川欧迅能源工程科技有限公司 | High-voltage electric stop valve with valve element stress balance |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120808 Termination date: 20141222 |
|
| EXPY | Termination of patent right or utility model |