CN204553903U - A kind of compressed natural gas bottle valve for cars - Google Patents
A kind of compressed natural gas bottle valve for cars Download PDFInfo
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- CN204553903U CN204553903U CN201520200996.0U CN201520200996U CN204553903U CN 204553903 U CN204553903 U CN 204553903U CN 201520200996 U CN201520200996 U CN 201520200996U CN 204553903 U CN204553903 U CN 204553903U
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- low melting
- melting alloy
- pressure cap
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Abstract
The utility model provides a kind of compressed natural gas bottle valve for cars, comprises valve body, spherical valve core, valve rod, switch knob and safety installations; Spherical valve core is placed between the suction port of valve body and air outlet, and spherical valve core controls conducting and the closedown of suction port and air outlet under the drive of valve rod, switch knob; Safety installations comprises safe plug screw, low melting alloy block, blowout disk, safe plug screw is provided with relief hole, low melting alloy is cast with in relief hole, safe plug screw relief hole front end is provided with low melting alloy groove, low melting alloy groove sidewall is provided with vent, low melting alloy block is placed in low melting alloy groove, and blowout disk is pressed on safe screw plunger end.The utility model can conveniently detect the substandard product produced by blowout disk defect, improves the safety coefficient of compressed natural gas bottle valve for cars; The utility model switch knob and valve rod adopt and the key of position misloading can be prevented to be connected, and can guarantee that the open/close states of cylinder valve is consistent with the keying indicating positions of switch knob.
Description
Technical field
The utility model relates to a kind of cylinder valve, particularly a kind of compressed natural gas bottle valve for cars.
Background technique
The employing ball-valve structure form that existing compressed natural gas bottle valve for cars is the most frequently used, it is 90 ° that switch knob opens and closes position, and handle has Directivity, namely the open/close states of cylinder valve is determined from the position by switch knob, and in prior art the foreign side of valve rod and switch knob and Nei Fang with the use of, Shortcomings: valve rod and switch knob easy locality misloading when assembling or maintenance, causes switch knob to open and close instruction and is not inconsistent with the actual open/close states of cylinder valve, cause the trouble in use.
Compressed natural gas bottle valve for cars is generally provided with safety installations, wherein the safety installations of cascaded structure is the form that employing blowout disk and low melting alloy are combined on a safety installations, safe plug screw is provided with relief hole, and be cast with low melting alloy in hole, the front end of safe plug screw is provided with blowout disk, whole safety installations is arranged on cylinder valve, when the serviceability temperature of gas cylinder, pressure exceed setting value, low melting alloy in safe plug screw is heated thawing, the pressure of superelevation makes blowout disk break, and in bottle, gas is released from safety installations escape orifice.Shortcomings: when the defectiveness of blowout disk own breaks or in assembly process during damage rupture, because safe plug screw has poured into a mould low melting alloy, gas temporarily cannot flow out from relief hole, the air tight test of factory inspection cannot detect this kind defective, in use, because high-pressure natural gas long duration of action is on low melting alloy, gas slowly can leak from safe plug screw escape orifice, rock gas is inflammable and explosive, there is the grave danger led to a disaster.
Summary of the invention
In order to solve prior art Problems existing, the utility model provides a kind of switch knob energy anti-position misloading, and safety installations is compressed natural gas bottle valve for cars safely and effectively.
A kind of compressed natural gas bottle valve for cars, comprises valve body, spherical valve core, valve rod pressure cap, valve rod, switch knob, pressure cap.Described valve body lower end is provided with suction port and gas-entered passageway, and outer wall upper end is provided with at least one air outlet, and bottom surface, described valve body upper end is provided with pressure cap groove, pressure cap groove bottom is provided with spool chamber, spool chamber is communicated with suction port, and described body wall is provided with stem through-hole, and described stem through-hole is communicated with spool groove; Described spherical valve core is placed in spool groove and is overlying on gas-entered passageway, and described spherical valve core outer wall is provided with grooving, and described spherical valve core is radially provided with valve core through hole; Described valve rod pressure cap is fixedly connected on stem through-hole inwall; Described valve rod is inserted in valve rod pressure cap, and described valve rod front end is provided with the first connecting key matched with grooving, and valve rod is connected with spherical valve core key; Described valve rod rear end is provided with drum type second connecting key, and the second connecting key ear end face is provided with tapped through hole; Switch knob is provided with the drum type attachment hole mated with the second connecting key; Second connecting key is placed in the attachment hole of switch knob, and screw is threaded onto in the tapped through hole of the second connecting key; Described pressure cap is placed in pressure cap groove and is fixedly connected with valve body, configures the outlet passageway owing to being communicated with spool groove and air outlet in described pressure cap.Described switch knob drives spherical valve core to be 90 ° by the conduction of valve rod and opens or close.
Described valve body is also provided with safety relief air outlet, safety relief mouth, safety installations.Described safety relief air outlet is arranged at the lower end of valve body; Described safety relief mouth is arranged at the sidewall of valve body, and is communicated with safety relief air outlet; Safety installations comprises safe plug screw, low melting alloy block, blowout disk: described safe plug screw is fixed in safety relief mouth, bottom surface, described safe plug screw front end is provided with low melting alloy groove, low melting alloy groove bottom is provided with the relief hole communicated with the external world, low melting alloy is cast with in pressure release hole wall, described low melting alloy block is placed in low melting alloy groove, low melting alloy groove sidewall is provided with vent, and described blowout disk is overlying on safe plug screw front-end face.
The utility model compared with prior art, has the following advantages: (1) switch knob adopts drum type endoporus to coordinate with valve rod, can guarantee that the open/close states of cylinder valve is consistent with the keying indicating positions of switch knob; (2) safe plug screw front end is provided with low melting alloy groove, and low melting alloy groove sidewall is provided with vent, when the defect of blowout disk own is broken or in assembly process during damage rupture, during cylinder valve air tightness test, gas can be flowed out by vent, is convenient to detect this substandard product.
Below in conjunction with Figure of description, the utility model is described further.
Accompanying drawing explanation
Fig. 1 is the main pseudosection of the utility model.
Fig. 2 is the left pseudosection of the utility model.
Fig. 3 is stem structure schematic diagram.
Fig. 4 is switch knob structural representation.
Fig. 5 is safety installations sectional drawing.
Embodiment
Composition graphs 1, Fig. 2, a kind of compressed natural gas bottle valve for cars, comprises valve body 1, spherical valve core 5, valve rod pressure cap 6-1, valve rod 6-2, switch knob 7, pressure cap 18.
Composition graphs 1, described valve body 1 lower end is provided with suction port 3 and gas-entered passageway, outer wall upper end is provided with at least one air outlet 19, described valve body 1 upper end is provided with cylindrical pressure cap groove, pressure cap groove inwall is provided with internal thread, cylindrical spool chamber 15 is provided with below pressure cap groove, spool chamber 15 is communicated with suction port 3, the internal diameter of spool chamber 15 is greater than gas-entered passageway internal diameter, described valve body 1 sidewall is provided with stem through-hole, described stem through-hole is communicated with spool chamber 15, described stem through-hole is divided near the small through hole of spool chamber 15 and the large through-hole away from spool chamber 15, large through-hole inwall is provided with internal thread.
Composition graphs 1, Fig. 2, described spherical valve core 5 is placed in spool groove 15 and is overlying on gas-entered passageway, and described spherical valve core 5 outer wall is provided with grooving 5-1, and described spherical valve core 5 is radially provided with valve core through hole 5-2,
Composition graphs 1, described valve rod pressure cap 6-1 is fixedly connected on stem through-hole wall.Valve rod pressure cap 6-1 comprises base and is located at the sleeve on base, and base is provided with the through hole communicated with sleeve, and sleeve outer wall is provided with screw thread, and sleeve is threaded with the large through-hole wall of stem through-hole.
Composition graphs 3, described valve rod 6-2 is cylindrical, and described valve rod 6-2 front end is provided with the first connecting key 6-4 matched with grooving 5-1, and described valve rod 6-2 rear end is provided with drum type second connecting key 6-5, and the second connecting key 6-5 ear end face is provided with band internal thread.Valve rod 6-2 is connected with spherical valve core 5 key through valve rod pressure cap 6-1.
Composition graphs 5, the keying instruction representing Push And Release is carved with on switch knob 7 surface, and switch knob 7 is provided with the drum type attachment hole 7-2 mated with the second connecting key 6-2; The second connecting key 6-2 of described valve rod 6-2 is placed in the attachment hole of switch knob 7, and screw 7-1 is threaded onto in the screw thread of the second connecting key 6-2, as shown in Figure 1.
Composition graphs 1, Fig. 2, described pressure cap 18 outer wall is provided with screw thread, is placed in pressure cap groove and is threaded with valve body 1, is configured for the outlet passageway 17 being communicated with spool chamber 15 and air outlet 19 in described pressure cap 18.
Composition graphs 1, valve body 1 is also provided with safety relief air outlet 4, safety relief mouth 14, safety installations.Described safety relief air outlet 4 is arranged at the lower end of valve body 1, and described safety relief mouth 14 is arranged at the sidewall of valve body 1, and is communicated with safety relief air outlet 4, and safety relief mouth 14 inwall is provided with screw thread.
Composition graphs 4, safety installations comprises safe plug screw 12, low melting alloy block 11, blowout disk 9.Described safe plug screw 12 outer wall is provided with screw thread 2, be connected with safety relief mouth 14 inner thread, described safe plug screw 12 front end is provided with low melting alloy groove 12-1, low melting alloy groove 12-1 bottom surface is provided with the relief hole 13 communicated with the external world, be cast with low melting alloy in relief hole 13 wall, low melting alloy groove 12-1 sidewall is provided with the vent 10 be in communication with the outside.Described low melting alloy block 11 is placed in low melting alloy groove, and described blowout disk 9 to be overlying on safe plug screw 12 front-end face and to cover in low melting alloy groove 12-1.
Gas-entered passageway is provided with the bottom sealing socket 8 with spherical valve core 5 form fit in the position contacted with spherical valve core 5; Pressure cap 18 is provided with the upper seal support 16 with spherical valve core 5 form fit in the position contacted with spherical valve core 5; O shape rubber ring is provided with between pressure cap 18 and valve body 1; O shape rubber ring is provided with between valve rod pressure cap 6-1 and valve rod 6-2.
Outer wall near valve body 1 suction port 3 is provided with screw thread, operationally, is connected with gas cylinder thread.Air outlet 19 inwall is provided with internal thread, operationally, with external means is fixedly connected with after being connected with head thread of giving vent to anger.
The utility model safety installations working principle is: when the serviceability temperature of gas cylinder, pressure exceed setting value, low melting alloy and the low melting alloy block 11 of cast in safe plug screw 12 are heated thawing, the pressure of superelevation makes blowout disk 9 break, and in bottle, gas is released by the relief hole 13 of safety relief air outlet 4 from safe plug screw 12; Safe plug screw 12 front end low melting alloy groove 12-1 and low melting alloy block 11 Spielpassung, when the defect of blowout disk 9 own is broken or in assembly process during damage rupture, during cylinder valve air tightness test, gas can in safe plug screw 12 front end the vent 10 of vacancy sidewall, safe plug screw 12 and valve body joint thread gaps in flow out, be convenient to detect this substandard product.
Claims (7)
1. a compressed natural gas bottle valve for cars, comprise valve body (1), spherical valve core (5), valve rod pressure cap (6-1), valve rod (6-2), switch knob (7), pressure cap (18), it is characterized in that
Described valve body (1) lower end is provided with suction port (3) and gas-entered passageway, and outer wall upper end is provided with at least one air outlet (19),
Described valve body (1) bottom surface, upper end is provided with pressure cap groove, and pressure cap groove bottom is provided with spool chamber (15), and spool chamber (15) is communicated with suction port (3),
Described valve body (1) sidewall is provided with stem through-hole, and described stem through-hole is communicated with spool chamber (15);
Described spherical valve core (5) is placed in spool chamber (15) and is overlying on gas-entered passageway,
Described spherical valve core (5) outer wall is provided with grooving (5-1),
Described spherical valve core (5) is radially provided with valve core through hole (5-2);
Described valve rod pressure cap (6-1) is fixedly connected on the inwall of stem through-hole;
Described valve rod (6-2) is inserted in valve rod pressure cap (6-1),
Described valve rod (6-2) front end is provided with the first connecting key (6-4) matched with grooving (5-1), and valve rod (6-2) is connected with spherical valve core (5) key,
Described valve rod (6-2) rear end is provided with drum type second connecting key (6-5), and the second connecting key (6-5) ear end face is provided with tapped through hole;
Switch knob (7) is provided with the drum type attachment hole (7-2) mated with the second connecting key (6-2);
Second connecting key (6-2) is placed in the attachment hole of switch knob (7), and screw (7-1) is threaded onto in the tapped through hole of the second connecting key (6-2);
Described pressure cap (18) is placed in pressure cap groove and is fixedly connected with valve body (1),
The outlet passageway (17) being communicated with spool chamber (15) and air outlet (19) is configured in described pressure cap (18).
2. compressed natural gas bottle valve for cars according to claim 1, is characterized in that, also comprises safety relief air outlet (4), safety relief mouth (14), safety installations;
Described safety relief air outlet (4) is arranged at the lower end of valve body (1);
Described safety relief mouth (14) is arranged at the sidewall of valve body (1), and is communicated with safety relief air outlet (4);
Safety installations comprises safe plug screw (12), low melting alloy block (11), blowout disk (9):
Described safe plug screw (12) is fixed in safety relief mouth (14),
Described safe plug screw (12) front end is provided with low melting alloy groove (12-1),
Low melting alloy groove (12-1) bottom surface is provided with the relief hole (13) communicated with the external world,
Low melting alloy is cast with in relief hole (13) wall,
Described low melting alloy block (11) is placed in low melting alloy groove (12-1), with low melting alloy groove (12-1) Spielpassung,
Described blowout disk (9) is overlying on safe plug screw (12) front-end face.
3. compressed natural gas bottle valve for cars according to claim 2, is characterized in that,
Safe plug screw (12) is threaded with safety relief mouth (14);
Low melting alloy groove sidewall is provided with the vent (10) be in communication with the outside.
4. compressed natural gas bottle valve for cars according to claim 1, is characterized in that,
Gas-entered passageway is provided with the bottom sealing socket (8) with spherical valve core (5) form fit in the position contacted with spherical valve core (5);
Pressure cap (18) is provided with the upper seal support (16) with spherical valve core (5) form fit in the position contacted with spherical valve core (5).
5. compressed natural gas bottle valve for cars according to claim 1, is characterized in that, is provided with O shape rubber ring between pressure cap (18) and valve body (1).
6. compressed natural gas bottle valve for cars according to claim 3, is characterized in that, is provided with O shape rubber ring between valve rod pressure cap (6-1) and valve rod (6-2).
7. compressed natural gas bottle valve for cars according to claim 1, is characterized in that, switch knob (7) surface is carved with and is opened and closed instruction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520200996.0U CN204553903U (en) | 2015-04-03 | 2015-04-03 | A kind of compressed natural gas bottle valve for cars |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520200996.0U CN204553903U (en) | 2015-04-03 | 2015-04-03 | A kind of compressed natural gas bottle valve for cars |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204553903U true CN204553903U (en) | 2015-08-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520200996.0U Active CN204553903U (en) | 2015-04-03 | 2015-04-03 | A kind of compressed natural gas bottle valve for cars |
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| CN (1) | CN204553903U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107289163A (en) * | 2017-06-30 | 2017-10-24 | 上海百图低温阀门有限公司 | Automobile-used high pressure compressed hydrogen cylinder safety device |
| RU2726972C1 (en) * | 2019-12-19 | 2020-07-17 | Акционерное общество "Московское Центральное конструкторское бюро арматуростроения" (АО "МосЦКБА") | Ball valve with triple safety system for explosive environment |
| RU222822U1 (en) * | 2023-11-20 | 2024-01-18 | Общество с ограниченной ответственностью "Научно-производственное объединение "Инпульс" (ООО "НПО "Инпульс") | Ball valve for gas pipeline |
| CN117803736A (en) * | 2024-02-28 | 2024-04-02 | 四川省简阳市川力机械制造有限责任公司 | Cut-off valve |
-
2015
- 2015-04-03 CN CN201520200996.0U patent/CN204553903U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107289163A (en) * | 2017-06-30 | 2017-10-24 | 上海百图低温阀门有限公司 | Automobile-used high pressure compressed hydrogen cylinder safety device |
| RU2726972C1 (en) * | 2019-12-19 | 2020-07-17 | Акционерное общество "Московское Центральное конструкторское бюро арматуростроения" (АО "МосЦКБА") | Ball valve with triple safety system for explosive environment |
| RU222822U1 (en) * | 2023-11-20 | 2024-01-18 | Общество с ограниченной ответственностью "Научно-производственное объединение "Инпульс" (ООО "НПО "Инпульс") | Ball valve for gas pipeline |
| CN117803736A (en) * | 2024-02-28 | 2024-04-02 | 四川省简阳市川力机械制造有限责任公司 | Cut-off valve |
| CN117803736B (en) * | 2024-02-28 | 2024-04-26 | 四川省简阳市川力机械制造有限责任公司 | Cut-off valve |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |