CN102996871B - Pneumatic bottle valve for compressed natural gas - Google Patents
Pneumatic bottle valve for compressed natural gas Download PDFInfo
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- CN102996871B CN102996871B CN201210539582.1A CN201210539582A CN102996871B CN 102996871 B CN102996871 B CN 102996871B CN 201210539582 A CN201210539582 A CN 201210539582A CN 102996871 B CN102996871 B CN 102996871B
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Abstract
The invention relates to a pneumatic bottle valve for compressed natural gas, comprising a valve body, a manual switch assembly, a pneumatic valve core assembly, a pneumatic pressing cover, a pull rod, an air cylinder, a pneumatic control air inlet, a piston, a resetting spring, an end cover and a safety screw plug, wherein the pneumatic valve core assembly is sleeved into the pneumatic pressing cover; the pneumatic valve core assembly comprises a tapered pneumatic main valve core, a pneumatic secondary valve core, a connecting pin and a pneumatic valve core resetting spring; the pneumatic main valve core is provided with a balance hole; through holes are respectively formed along the radial direction of each of the pneumatic main valve core and the pneumatic secondary valve core; the pneumatic secondary valve core is sleeved into the pneumatic main valve core; the connecting pin is inserted into the through holes; the connecting pin and the through holes are in clearance fit; the pneumatic valve core resetting spring is located in a hollow cavity of the pneumatic secondary valve core; one end of the pneumatic valve core resetting spring is in contact with the inner wall of the pneumatic secondary valve core; and the head of one end of a pull rod stretches into the pneumatic valve core resetting spring. According to the pneumatic bottle valve of the compressed natural gas, the gas discharging efficiency of air bottles of the whole bundle of a bottle group is improved; and the pneumatic bottle valve has the advantages of convenience in use, reasonable design, compact structure, good sealing performance and high safety.
Description
Technical field
The present invention relates to valve field, the compressed natural gas boundling bottle group special pneumatic cylinder valve that particularly a kind of control charges and discharges gas.
Background technique
Along with national energy-saving reduces discharging going deep into of policy, as the representative of clean energy resource, the use of rock gas is increasingly extensive.At present, just by large gas tank, the mode to many bottles of boundling bottle groups that connect and compose by cylinder manifold develops the storage volume of accumulating compressed natural gas body.Because the gas cylinder quantity of gas cylinder boundling bottle group is many, bottle group to get moral point many, when adopting conventional valves and solenoid valve that gas cylinder is filled, exitted, inefficiency, be not easy to realize long-range and centralized control, during solenoid valve running, system need to be equipped with flameproof apparatus, user cost improves greatly, and Security is also difficult to guarantee.
Summary of the invention
The object of the present invention is to provide a kind of compact structure, safe compressed natural gas boundling bottle group special pneumatic cylinder valve.
The technical solution that realizes the object of the invention is:
The pneumatic cylinder valve of compressed natural gas, comprises valve body, and valve body top sets out gas port, and valve body lower portion arranges suction port;
Also comprise hand switch assembly, pneumatic valve core assembly, pneumatic gland, pull bar, cylinder, pneumatic control suction port, piston, Returnning spring, end cap;
Hand switch assembly is arranged in the endoporus at valve body rear portion, and this endoporus communicates with air inlet duct;
The front end of pneumatic gland is connected with valve body, pneumatic valve core assembly is arranged in the cavity in pneumatic gland, pneumatic valve core assembly comprises the pneumatic main valve plug of taper, pneumatic auxiliary valve core, connecting pin, pneumatic valve core Returnning spring, in pneumatic main valve plug, equalizing orifice is set, pneumatic main valve plug front end arranges pneumatic main valve plug seal washer; Pneumatic auxiliary valve core front end arranges pneumatic auxiliary valve core seal washer; Pneumatic main valve plug rear end and pneumatic auxiliary valve core front end radially respectively arrange a through hole, and pneumatic auxiliary valve core is inserted in the endoporus of pneumatic main valve plug rear end, and connecting pin is inserted in through hole, connecting pin and through hole there is gap; Pneumatic auxiliary valve core rear end connects spool gland front end, spool gland hollow, and rear end arranges through hole; Pneumatic valve core Returnning spring is positioned at pneumatic auxiliary valve core cavity, and front end contacts with pneumatic auxiliary valve core inwall, and rear end is connected with pull bar front end, and pull bar is through the through hole of spool gland;
The rear end of pneumatic gland is connected with cylinder front end, and cylinder rear end is connected with end cap, in the cavity between cylinder and end cap, piston is set, and back end of tie rod is fixed through piston and nut thread, between piston and end cap, Returnning spring is set;
Pneumatic control suction port is set on cylinder.
Working principle of the present invention is as follows:
The pneumatic cylinder valve pneumatic valve core of compressed natural gas is Normally closed type, and hand switch is open in usual, while being in an emergency (as cylinder valve or pipeline gas leakage), can be by manually manually controlling, and manual-lock.
When gas cylinder is exitted use, by pneumatic control suction port, pass into pneumatic control gas and enter cylinder, pneumatic control gas promotes piston movement, piston driving pull bar and pneumatic auxiliary valve core, make pneumatic auxiliary valve core first separated with pneumatic main valve plug, and the equalizing orifice of gas on pneumatic main valve plug released, when the pressure difference producing when gas cylinder and air outlet and draw-bar pull balance, pneumatic main valve plug, under the pulling force effect of pull bar, departs from completely with the sealing surface of valve body, and now pneumatic valve core assembly is opened venting; While stopping exitting, cut off pneumatic control gas, piston is pushing drawing rod under the effect of Returnning spring, pull bar head on pneumatic valve core Returnning spring make pneumatic auxiliary valve core and pneumatic main valve plug closely sealed, pneumatic main valve plug and valve body sealing surface are closely sealed, valve closing.
During to inflating gas cylinder, without pneumatic control gas, institute's inflatable body utilizes self pressure directly to promote the motion of pneumatic valve core assembly, makes pneumatic main valve plug separated with valve body sealing surface, and gas circuit is connected, and gas cylinder is normally inflated.After inflation, close inflation origin, now pneumatic main valve plug is closely sealed with valve body sealing surface under the effect of pneumatic valve core Returnning spring, valve closing.
The present invention compared with prior art, its remarkable advantage:
1, simple in structure, the difficult mechanical failure that occurs, working efficiency is high;
2, the switch that utilizes low-pressure gas control valve, cost is low, safe;
3, valve mechanism rationally, compact structure, good airproof performance.
Accompanying drawing explanation
Fig. 1 is the structural representation of the pneumatic cylinder valve of compressed natural gas of the present invention;
Fig. 2 is the structural representation of pneumatic valve core assembly in Fig. 1;
Fig. 3 is the side structure schematic diagram of the pneumatic cylinder valve of compressed natural gas of the present invention
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
The pneumatic cylinder valve of compressed natural gas, it comprises valve body 4, hand switch assembly, pneumatic valve core assembly, pneumatic gland 10, pull bar 12, cylinder 13, pneumatic control suction port 14, piston 15, Returnning spring 16, end cap 17, safe plug screw 21;
Valve body 4 tops set out gas port 5 and air outlet screw thread 20, and valve body 4 bottoms arrange suction port 18, and suction port 18 is connected with gas cylinder by suction port screw thread 19;
Hand switch assembly is arranged in the stepped endoporus at valve body 4 rear portions, and this endoporus communicates with suction port 18 pipelines.Hand switch assembly comprises valve rod 1, pressure cap 2, manual spool 3, pressure cap 2 screw thread spinnings are on valve body, valve rod 1 is set in pressure cap 2, valve rod 1 head is outer square device, manually spool 3 is corresponding interior square device with the joint of valve rod 1, valve rod 1 is connected with manual spool 3 axle connection formulas, and manually spool 3 is controlled the switch of suction ports 18, and between pressure cap 2 and valve rod 1, in the annular groove on valve rod outer wall, seal ring seals;
Pneumatic gland 10 front ends are threaded with valve body 4, and pneumatic valve core assembly is arranged in the cavity in pneumatic gland 10 and close contact, and pneumatic valve core assembly comprises the pneumatic main valve plug 6 of taper, pneumatic auxiliary valve core 9, bar-shaped connecting pin 8, pneumatic valve core Returnning spring 11, pneumatic main valve plug 6 is positioned at 5 places, air outlet, pneumatic main valve plug 6 arranges equalizing orifice 7, preferred equalizing orifice 7 is positioned on the axis of pneumatic main valve plug 6, pneumatic main valve plug 6 front ends arrange groove, the pneumatic main valve plug seal washer 5.2 of ring-type is set in groove, umbrella screw 5.1 is threaded with pneumatic main valve plug 6 through pneumatic main valve plug seal washer 5.2, the interior setting of screw 5.1 and the corresponding through hole of equalizing orifice 7, pneumatic main valve plug seal washer 5.2 is fixed on pneumatic main valve plug 6, pneumatic main valve plug 6 rear ends arrange endoporus, and the internal diameter of endoporus equals the external diameter of pneumatic auxiliary valve core 9 front ends, pneumatic auxiliary valve core 9 is step-like cylinder, its middle part projection, the pneumatic auxiliary valve core seal washer 7.1 of head wrapping portion of pneumatic auxiliary valve core 9, pneumatic main valve plug 6 rear ends arrange endoporus, inner hole wall radially arranges a through hole, pneumatic auxiliary valve core 9 front ends radially arrange a through hole, pneumatic auxiliary valve core 9 front end radial direction through hole are not through pneumatic auxiliary valve core seal washer 7.1, pneumatic auxiliary valve core 9 is inserted in pneumatic main valve plug 6 rear end endoporus, the part that pneumatic auxiliary valve core seal washer 7.1 is exposed to pneumatic auxiliary valve core 9 heads covers on the equalizing orifice 7 of pneumatic main valve plug 6, control the switch of equalizing orifice 7, pneumatic main valve plug 6 inserts connecting pin 8 with pneumatic auxiliary valve core 9 by through hole and is connected, each through hole internal diameter is slightly larger than the diameter of connecting pin 8, through hole and connecting pin 8 are Spielpassung, pneumatic auxiliary valve core 9 rear ends are threaded with the front end of cylindrical spool gland 11.1, spool gland 11.1 hollows, and rear end arranges through hole, pneumatic valve core Returnning spring 11 is positioned at pneumatic auxiliary valve core 9 cavitys, one end contacts with pneumatic auxiliary valve core 9 inwalls, pull bar 12 front ends are step-like, there are two step surfaces, pneumatic valve core Returnning spring 11 is set in first step surface of pull bar 12 front ends, pull bar 12 is through the through hole of spool gland 11.1, and the through-hole diameter of spool gland 11.1 equals pull bar 12 cross section round diameters, pneumatic valve core assembly is controlled the switch of air outlet 5.
Pneumatic gland 10 rear ends are threaded with cylinder 13, piston 15 is positioned at cylinder 13, front internal gland 22.1 is set in the stepped endoporus of the rear end of pneumatic gland 10, front internal gland 22.1 is threaded with the stepped inner hole wall of the rear end of pneumatic gland 10, in the less stepped endoporus of internal diameter, between front internal gland 22.1 and Pneumatic pressure lid 10, seal ring is set; Rear internal gland 22.2 is set in the stepped endoporus of the front end of cylinder 13, and rear internal gland 22.2 is threaded with the stepped inner hole wall of the front end of cylinder 13, in the less stepped endoporus of internal diameter, between rear internal gland 22.2 and cylinder 13, seal ring is set; Pull bar 12 is successively through pneumatic gland 10, front internal gland 22.1, rear internal gland 22.2, cylinder 13, pull bar 12 rear ends are fixed through piston 15 and nut 15.1 screw threads, end cap 17 is threaded with cylinder 13, in the cavity between piston 15 and end cap 17, Returnning spring 16 is set.
Pneumatic control suction port 14 is set on cylinder 13, pneumatic control suction port 14 pipelines extend to the cavity between cylinder 13 and end cap 17, when work, by pneumatic control suction port 14, pass into low-pressure pneumatic control gas and enter cylinder 13, low-pressure pneumatic is controlled 15 motions of gas push piston; Safe plug screw 21 spinnings are on valve body.
Although describe some embodiments of the present invention here with reference to the accompanying drawings, should be appreciated that described embodiment is only example, and nonrestrictive.The scope and spirit of the present invention that limit in not deviating from claim and equivalent thereof it will be appreciated by those skilled in the art that in the situation that can be made the variation in various forms and details to these examples embodiment.For example, pneumatic main valve plug seal washer 5.2 is except being screwed this Placement of front end of pneumatic main valve plug 6, and pneumatic main valve plug seal washer 5.2 can also directly be adhered to the front end of pneumatic main valve plug 6.
The pneumatic cylinder valve pneumatic valve core of compressed natural gas is Normally closed type, and hand switch is open in usual, while being in an emergency (as cylinder valve or pipeline gas leakage), can be by manually manually controlling, and manual-lock.
When gas cylinder is exitted use, by pneumatic control suction port 14, pass into pneumatic control gas and enter cylinder 13, pneumatic control gas promotes piston 15 motions, piston 15 drives pull bar 12 and pneumatic auxiliary valve core 9, make pneumatic auxiliary valve core 9 first separated with pneumatic main valve plug 6, the equalizing orifice 7 of gas on pneumatic main valve plug 6 released, when the pressure difference producing when gas cylinder and air outlet and pull bar 12 tension balanced, pneumatic main valve plug 6 is under the pulling force effect of pull bar 12, depart from completely with the sealing surface of valve body 4, now pneumatic valve core assembly is opened venting; While stopping exitting, cut off pneumatic control gas, piston 15 is pushing drawing rod 12 under the effect of Returnning spring 16, pull bar 12 head on pneumatic valve core Returnning spring 11 make pneumatic auxiliary valve core 9 and pneumatic main valve plug 6 closely sealed, pneumatic main valve plug 6 and valve body 4 sealing surfaces are closely sealed, valve closing.
During to inflating gas cylinder, without pneumatic control gas, institute's inflatable body utilizes self pressure directly to promote the motion of pneumatic valve core assembly, makes pneumatic main valve plug 6 separated with valve body 4 sealing surfaces, and gas circuit is connected, and gas cylinder is normally inflated.After inflation, close inflation origin, now pneumatic main valve plug 6 is closely sealed with valve body 4 sealing surfaces under the effect of pneumatic valve core Returnning spring 11, valve closing.
Claims (7)
1. the pneumatic cylinder valve of compressed natural gas, comprises valve body (4), and valve body (4) top sets out gas port (5), and valve body (4) bottom arranges suction port (18); Hand switch assembly is arranged in the endoporus at valve body (4) rear portion, and this endoporus communicates with suction port (18) pipeline;
It is characterized in that: also comprise pneumatic valve core assembly, pneumatic gland (10), pull bar (12), cylinder (13), pneumatic control suction port (14), piston (15), Returnning spring (16), end cap (17);
The front end of pneumatic gland (10) is connected with valve body (4), pneumatic valve core assembly is arranged in the cavity in pneumatic gland (10), and pneumatic valve core assembly comprises the pneumatic main valve plug of taper (6), pneumatic auxiliary valve core (9), connecting pin (8), pneumatic valve core Returnning spring (11); Pneumatic main valve plug (6) is positioned at air outlet (5) to be located, and equalizing orifice (7) is inside set, and pneumatic main valve plug (6) front end arranges pneumatic main valve plug seal washer (5.2), and rear end is provided with endoporus; Pneumatic auxiliary valve core (9) middle part and rear portion hollow, arrange pneumatic auxiliary valve core seal washer (7.1) in head; Pneumatic main valve plug (6) rear end inner hole wall and pneumatic auxiliary valve core (9) front end radially respectively arrange a through hole, pneumatic auxiliary valve core (9) front end is inserted in the endoporus of pneumatic main valve plug (6) rear end, pneumatic auxiliary valve core seal washer (7.1) covers on the equalizing orifice (7) of pneumatic main valve plug (6), connecting pin (8) is inserted in through hole, between connecting pin (8) and through hole, has gap; Pneumatic auxiliary valve core (9) rear end connects spool gland (11.1) front end, spool gland (11.1) hollow, and rear end arranges through hole; Pneumatic valve core Returnning spring (11) is positioned at pneumatic auxiliary valve core (9) cavity, and front end contacts with pneumatic auxiliary valve core (9) inwall, and rear end is connected with pull bar (12) front end, and pull bar (12) is through the through hole of spool gland (11.1);
The rear end of pneumatic gland (10) is connected with cylinder (13) front end, cylinder (13) rear end is connected with end cap (17), in cavity between cylinder (15) and end cap (17), piston (15) is set, pull bar (12) rear end is fixed through piston (15) and nut (15.1) screw thread, between piston (15) and end cap (17), Returnning spring (16) is set;
Pneumatic control suction port (14) is set on cylinder (13).
2. the pneumatic cylinder valve of compressed natural gas according to claim 1, it is characterized in that: hand switch assembly comprises valve rod (1), pressure cap (2), manual spool (3), pressure cap (2) is connected in the endoporus at valve body (4) rear portion, valve rod (1) front end sleeve is loaded in the cavity of pressure cap (2), and valve rod (1) front end connects manual spool (3).
3. the pneumatic cylinder valve of compressed natural gas according to claim 2, it is characterized in that: pneumatic main valve plug seal washer (5.2) ringwise, screw (5.1) is connected in pneumatic main valve plug (6) through pneumatic main valve plug seal washer (5.2), and screw arranges through hole in (5.1).
4. the pneumatic cylinder valve of compressed natural gas according to claim 3, is characterized in that: front internal gland (22.1) is set in the stepped endoporus of the rear end of pneumatic gland (10), between front internal gland (22.1) and Pneumatic pressure lid (10), seal ring is set; Rear internal gland (22.2) is set in the stepped endoporus of the front end of cylinder (13), between rear internal gland (22.2) and cylinder (13), seal ring is set, pull bar (12) is through front internal gland (22.1) and rear internal gland (22.2).
5. the pneumatic cylinder valve of compressed natural gas according to claim 4, is characterized in that: in the annular groove on valve rod (2) outer wall, seal ring is set.
6. the pneumatic cylinder valve of compressed natural gas according to claim 4, is characterized in that: in the annular groove of piston (15) outer wall, seal ring is set.
7. the pneumatic cylinder valve of compressed natural gas according to claim 4, is characterized in that: safe plug screw (21) spinning is on valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210539582.1A CN102996871B (en) | 2012-12-14 | 2012-12-14 | Pneumatic bottle valve for compressed natural gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210539582.1A CN102996871B (en) | 2012-12-14 | 2012-12-14 | Pneumatic bottle valve for compressed natural gas |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102996871A CN102996871A (en) | 2013-03-27 |
| CN102996871B true CN102996871B (en) | 2014-11-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210539582.1A Active CN102996871B (en) | 2012-12-14 | 2012-12-14 | Pneumatic bottle valve for compressed natural gas |
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| CN (1) | CN102996871B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109296812B (en) * | 2018-07-13 | 2020-01-07 | 上海宇航系统工程研究所 | High-pressure cylinder valve |
| CN110513511A (en) * | 2019-08-28 | 2019-11-29 | 奥瑞拓能源科技股份有限公司 | A kind of air distributing device |
| CN112524325A (en) * | 2020-11-30 | 2021-03-19 | 沧州润久智能仪表有限公司 | Emergency valve |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19812376A1 (en) * | 1998-03-20 | 1999-09-23 | Norbert Stoffer | Gas pressure reduction fitting between gas bottle supply |
| CN201391607Y (en) * | 2009-04-22 | 2010-01-27 | 大连亨利测控仪表工程有限公司 | Cage type back-pressure pilot-operated control valve |
| CN101922562A (en) * | 2010-08-14 | 2010-12-22 | 江南机器（集团）有限公司 | Dual-piston pneumatic ball valve of compressed air bundling air cylinder |
| CN203051867U (en) * | 2012-12-14 | 2013-07-10 | 丹阳市飞轮气体阀门有限公司 | Pneumatic bottle valve for compressed natural gas |
-
2012
- 2012-12-14 CN CN201210539582.1A patent/CN102996871B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19812376A1 (en) * | 1998-03-20 | 1999-09-23 | Norbert Stoffer | Gas pressure reduction fitting between gas bottle supply |
| CN201391607Y (en) * | 2009-04-22 | 2010-01-27 | 大连亨利测控仪表工程有限公司 | Cage type back-pressure pilot-operated control valve |
| CN101922562A (en) * | 2010-08-14 | 2010-12-22 | 江南机器（集团）有限公司 | Dual-piston pneumatic ball valve of compressed air bundling air cylinder |
| CN203051867U (en) * | 2012-12-14 | 2013-07-10 | 丹阳市飞轮气体阀门有限公司 | Pneumatic bottle valve for compressed natural gas |
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| Publication number | Publication date |
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| CN102996871A (en) | 2013-03-27 |
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