CN213361871U - NGV air gun head - Google Patents
NGV air gun head Download PDFInfo
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- CN213361871U CN213361871U CN202022104290.8U CN202022104290U CN213361871U CN 213361871 U CN213361871 U CN 213361871U CN 202022104290 U CN202022104290 U CN 202022104290U CN 213361871 U CN213361871 U CN 213361871U
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- gas filling
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- valve body
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Abstract
The utility model provides a NGV air entrainment rifle head belongs to air entrainment equipment technical field. The problems that an existing NGV gas filling gun head is connected and locked by a steel ball when being plugged into and pulled out of a gas filling port, and the NGV gas filling gun head cannot be plugged into and locked are solved. The gas filling valve comprises a valve body, a guide sleeve, a valve core and a spring I, wherein the valve body is composed of a gas inlet connector and a gas filling end connector, a support ring located at the front end of the guide sleeve is arranged in the valve body in a sliding fit mode, a spring II is arranged between the support ring and the guide sleeve, a plurality of mounting grooves which extend in the circumferential direction and penetrate through the gas filling end connector are formed in the gas filling end connector, a snap ring section extending in the circumferential direction is arranged in each mounting groove, a driving assembly is arranged outside the valve body, and when a gas filling port in a vehicle gas cylinder is inserted into the valve body, the. The utility model discloses can effectively lock with the air entrainment mouth.
Description
Technical Field
The utility model belongs to the technical field of air entrainment equipment, a NGV air entrainment rifle head is related to.
Background
A natural gas fueling station refers to a location where fuel is provided in the form of Compressed Natural Gas (CNG) to Natural Gas Vehicles (NGVs) and large CNG sub-stations. The gas in the natural gas pipeline is generally subjected to pre-purification treatment to remove sulfur and water in the gas, then the gas is compressed from 0.1-1.0Mpa to 25Mpa by a compressor unit, and finally the vehicle is aerated by an aerating machine. Because natural gas has strong flammability and explosiveness and the natural gas used in a natural gas filling station has great pressure, natural gas filling equipment must have good stability and sealing performance, and most common gas filling gun heads mainly comprise NGV gas filling gun heads.
The structure of the prior NGV gun head is shown in figure 1, and is connected and locked by a steel ball b when being plugged into and pulled out of a gas filling port a on a vehicle gas cylinder, as shown in figure 2, the contact surface of the steel ball b and the gas filling port a is point contact, when the contact surface is seriously worn or has burrs, the steel ball b can not be effectively connected and lock the gas filling port a, so that the problems that the NGV gun head can not be plugged and locked exist.
SUMMERY OF THE UTILITY MODEL
The utility model aims at having the above-mentioned problem to current technique, provide an NGV that can carry out effective locking with the air entrainment mouth and add air gun head.
The purpose of the utility model can be realized by the following technical proposal:
the NGV gas filling gun head comprises a valve body consisting of a gas inlet joint and a gas filling end joint, a guide sleeve coaxially and fixedly connected in the valve body and a valve core in sliding fit in the guide sleeve, the rear end of the air inlet joint is provided with a positioning step, a first spring is arranged between the positioning step and the valve core, a support ring positioned at the front end of the guide sleeve is in sliding fit in the valve body, a second spring is arranged between the support ring and the guide sleeve, the gas filling end joint is provided with a plurality of mounting grooves which extend in the circumferential direction and are arranged to penetrate through the gas filling end joint, the mounting grooves are positioned on the same ring line of the gas filling end joint, each mounting groove is internally provided with a snap ring section which extends in the circumferential direction, the snap ring sections are positioned on the same ring line, a driving assembly is arranged outside the valve body, when the gas filling port on the vehicle gas cylinder is inserted into the valve body, the driving assembly drives the plurality of clamping ring sections to be clamped into the outer annular groove of the gas filling port on the vehicle gas cylinder.
Because the snap ring section extends in the annular direction, when the snap ring section is clamped into the outer annular groove of the gas filling port on the vehicle gas cylinder, the contact surface of the snap ring section and the outer annular groove is in line contact, and the contact area is increased, so that the problems that the NGV gas filling gun head cannot be inserted and locked when the gas filling port is seriously worn or burrs exist are solved, and the reliability of the connection of the NGV gas filling gun head and the gas filling port is improved.
In the NGV gas filling gun head, the driving assembly comprises a limiting sleeve and a spring III, the limiting sleeve is slidably sleeved outside the valve body, the spring III is arranged between the limiting sleeve and the gas inlet connector, an inner annular groove I and an inner annular groove II are formed in the inner wall of the limiting sleeve, the depth of the inner annular groove I is larger than that of the inner annular groove II, and when a gas filling port on the vehicle gas cylinder is inserted into the valve body, the clamping ring section moves from the inner annular groove I to the inner annular groove II. In order to facilitate the operation of the limiting sleeve, a sheath made of plastic or rubber is arranged outside the limiting sleeve.
In the NGV gas filling gun head, the plurality of snap ring sections are uniformly distributed along the circumferential direction of the gas filling end joint.
In the NGV gas gun head, the snap ring section has a circular cross section.
In the NGV air gun head, the section of the snap ring section is elliptical.
In the NGV gas gun head, the number of the snap ring segments is greater than or equal to 2.
In the NGV gas gun head described above, the number of snap ring segments is 4.
In the NGV gas filling gun head, the inner wall of the gas filling end joint is provided with a first annular limiting part, the support ring is provided with a second annular limiting part, the second annular limiting part is limited between the first annular limiting part and the guide sleeve, and the second spring is positioned between the second annular limiting part and the guide sleeve.
In the NGV gas filling gun head, the outer part of the gas filling end joint is provided with a third annular limiting part, the inner wall of the limiting sleeve is provided with a fourth annular limiting part, the fourth annular limiting part is limited between the third annular limiting part and the gas inlet joint, and the third spring is positioned between the fourth annular limiting part and the gas inlet joint.
Compared with the prior art, the NGV air gun head has the following advantages:
the steel ball in the prior art is replaced by the clamping ring section, the contact surface of the clamping ring section and the outer annular groove is in line contact, and the contact area is increased, so that the problems that an NGV gas filling gun head cannot be inserted and locked when a gas filling opening is seriously worn or burrs exist are solved, and the reliability of connection of the NGV gas filling gun head and the gas filling opening is improved.
Drawings
Figure 1 is a longitudinal cross-sectional view of an NGV gas gun head provided in the background art.
Fig. 2 is a schematic view of the contact of the steel ball with the charging port provided in the background art.
Fig. 3 is a longitudinal sectional view of the NGV gas gun head provided by the present invention.
Fig. 4 is a schematic view of the snap ring segment contacting the air charging opening.
Fig. 5 is a schematic connection diagram of the NGV air-filling gun head and the air filling port provided by the present invention.
In the figure, a is a gas filling port; a1, outer annular groove; b. a steel ball; 1. an air inlet joint; 11. positioning a step; 2. an air entrainment end joint; 21. mounting grooves; 22. a first annular limiting part; 23. a third annular limiting part; 3. a guide sleeve; 4. a valve core; 5. a first spring; 6. a support ring; 61. a second annular limiting part; 7. a second spring; 8. a snap ring section; 9. a limiting sleeve; 91. a first inner annular groove; 92. a second inner annular groove; 93. the annular limiting part IV; 10. and a third spring.
Detailed Description
The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.
The NGV gas filling gun head shown in fig. 3 comprises a valve body composed of a gas inlet connector 1 and a gas filling end connector 2, a guide sleeve 3 coaxially and fixedly connected in the valve body, and a valve core 4 in sliding fit in the guide sleeve 3, wherein the rear end of the gas inlet connector 1 is provided with a positioning step 11, a spring I5 is arranged between the positioning step 11 and the valve core 4, a support ring 6 positioned at the front end of the guide sleeve 3 is in sliding fit in the valve body, and a spring II 7 is arranged between the support ring 6 and the guide sleeve 3. The inner wall of the gas filling end joint 2 is provided with a first annular limiting part 22, the support ring 6 is provided with a second annular limiting part 61, the second annular limiting part 61 is limited between the first annular limiting part 22 and the guide sleeve 3, and the second spring 7 is positioned between the second annular limiting part 61 and the guide sleeve 3.
As shown in fig. 3, the gas filling end joint 2 is provided with a plurality of mounting grooves 21 which extend circumferentially and penetrate the gas filling end joint 2, the mounting grooves 21 are located on the same ring line of the gas filling end joint 2, and the clamping ring segments 8 are uniformly distributed along the circumferential direction of the gas filling end joint 2. Each mounting groove 21 is provided with a snap ring segment 8 extending circumferentially, the snap ring segments 8 are located on the same circular line, as shown in fig. 4, the number of the snap ring segments 8 is 4, and the cross section of the snap ring segment 8 is circular or elliptical.
As shown in fig. 3, a driving assembly is arranged outside the valve body, and when the gas charging port a on the vehicle gas cylinder is inserted into the valve body, the driving assembly drives a plurality of clamping ring segments 8 to be clamped into an outer annular groove a1 of the gas charging port a on the vehicle gas cylinder. Specifically, the driving assembly comprises a limiting sleeve 9 which is sleeved outside the valve body in a sliding mode and a spring III 10 which is arranged between the limiting sleeve 9 and the air inlet connector 1, the inner wall of the limiting sleeve 9 is provided with a first inner annular groove 91 and a second inner annular groove 92, the depth of the first inner annular groove 91 is larger than that of the second inner annular groove 92, and when an air inlet a on the vehicle gas cylinder is inserted into the valve body, the clamping ring segment 8 moves to the second inner annular groove 92 from the first inner annular groove 91. In order to facilitate the handling of the stop collar 9, a sheath made of plastic or rubber is arranged outside the stop collar 9.
As shown in fig. 3, an annular limiting portion three 23 is arranged outside the gas filling end connector 2, an annular limiting portion four 93 is arranged on the inner wall of the limiting sleeve 9, the annular limiting portion four 93 is limited between the annular limiting portion three 23 and the gas inlet connector 1, and the spring three 10 is located between the annular limiting portion four 93 and the gas inlet connector 1.
When the NGV gas filling gun head is not connected with a gas filling port a on a vehicle gas cylinder, as shown in figure 3, the support ring 6 supports each snap ring segment 8 under the action of the spring II 7, so that the snap ring segment 8 is limited in the inner annular groove I91 of the limit sleeve 9, at the moment, the valve core 4 is retracted into the guide sleeve 3 under the action of the spring I5, and a sealing ring is arranged between the valve core 4 and the guide sleeve 3 to prevent the valve core 4 from being conducted.
When the connection is carried out, the NGV gas filling gun head is aligned to a gas filling port a on the vehicle gas cylinder, the gas filling port a enters the gas filling end connector 2, then the gas filling port a pushes the support ring 6 to move backwards along the axial direction, the spring II 7 is compressed, the gas filling port a pushes the valve core 4 to enable the valve core 4 to be conducted until an outer annular groove a1 of the gas filling port a moves to the opposite position of the clamping ring section 8, at the moment, the limiting sleeve 9 continues to move forwards along the axial direction, the clamping ring section 8 passes through the inner annular groove I91 and then enters the inner annular groove II 92, and as shown in fig. 5, the clamping ring section 8 at the moment is limited between the inner annular groove II 92 and the outer annular groove a 35.
When the locking device is unlocked, the limiting sleeve 9 is pulled backwards, the clamping ring section 8 moves from the inner annular groove II 92 to the inner annular groove I91, the support ring 6 moves forwards under the action of the spring II 7, the air adding port a is separated from the air adding end connector 2, and meanwhile the support ring 6 blocks the clamping ring section 8 to prevent the clamping ring section 8 from falling off.
Because the snap ring segment 8 extends circumferentially, when the snap ring segment 8 is snapped into the outer annular groove a1 of the air charging port a on the vehicle gas cylinder, the contact surface of the snap ring segment 8 and the outer annular groove a1 is in line contact, so that the contact area is increased, the problems that the NGV air charging gun head cannot be inserted and locked when the air charging port a is seriously worn or has burrs are solved, and the reliability of the connection of the NGV air charging gun head and the air charging port a is improved.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (9)
1. An NGV gas filling gun head comprises a valve body, a guide sleeve (3) and a valve core (4), wherein the valve body is composed of a gas inlet connector (1) and a gas filling end connector (2), the guide sleeve (3) is coaxially and fixedly connected in the valve body, the valve core (4) is in sliding fit in the guide sleeve (3), a positioning step (11) is arranged at the rear end of the gas inlet connector (1), a spring I (5) is arranged between the positioning step (11) and the valve core (4), a support ring (6) which is positioned at the front end of the guide sleeve (3) is in sliding fit in the valve body, a spring II (7) is arranged between the support ring (6) and the guide sleeve (3), the NGV gas filling gun head is characterized in that the gas filling end connector (2) is provided with a plurality of mounting grooves (21) which extend in the circumferential direction and penetrate through the gas filling end connector (2), the mounting grooves (21) are positioned on the same ring line of the gas filling end connector, the clamping ring segments (8) are positioned on the same ring line, a driving component is arranged outside the valve body, and when the air charging port (a) on the vehicle air bottle is inserted into the valve body, the driving component drives the clamping ring segments (8) to be clamped into the outer annular groove (a1) of the air charging port (a) on the vehicle air bottle.
2. The NGV gas filling gun head according to claim 1, wherein the driving assembly comprises a limiting sleeve (9) which is slidably sleeved outside the valve body and a spring III (10) which is arranged between the limiting sleeve (9) and the gas inlet connector (1), the inner wall of the limiting sleeve (9) is provided with a first inner annular groove (91) and a second inner annular groove (92), the depth of the first inner annular groove (91) is greater than that of the second inner annular groove (92), and the clamping ring segment (8) moves from the first inner annular groove (91) to the second inner annular groove (92) when a gas filling port (a) on the vehicle gas cylinder is inserted into the valve body.
3. An NGV gas-filling lance head according to claim 1 or 2, wherein a plurality of the snap ring segments (8) are evenly distributed along the circumference of the gas-filling end fitting (2).
4. An NGV gas gun head according to claim 1 or 2, characterized in that the snap ring segment (8) is circular in cross-section.
5. An NGV gas gun head according to claim 1 or 2, characterized in that the snap ring segment (8) has an elliptical cross-section.
6. An NGV gas gun head according to claim 1 or 2, characterized in that the number of snap ring segments (8) is equal to or greater than 2.
7. An NGV aerating lance head as claimed in claim 6, wherein the number of said snap ring segments (8) is 4.
8. The NGV gas filling gun head according to claim 1, wherein the inner wall of the gas filling end joint (2) is provided with a first annular limiting part (22), the support ring (6) is provided with a second annular limiting part (61), the second annular limiting part (61) is limited between the first annular limiting part (22) and the guide sleeve (3), and the second spring (7) is positioned between the second annular limiting part (61) and the guide sleeve (3).
9. The NGV gas filling gun head according to claim 2, wherein an annular limiting part III (23) is arranged outside the gas filling end joint (2), an annular limiting part IV (93) is arranged on the inner wall of the limiting sleeve (9), the annular limiting part IV (93) is limited between the annular limiting part III (23) and the gas inlet joint (1), and the spring III (10) is positioned between the annular limiting part IV (93) and the gas inlet joint (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022104290.8U CN213361871U (en) | 2020-09-23 | 2020-09-23 | NGV air gun head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022104290.8U CN213361871U (en) | 2020-09-23 | 2020-09-23 | NGV air gun head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213361871U true CN213361871U (en) | 2021-06-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022104290.8U Active CN213361871U (en) | 2020-09-23 | 2020-09-23 | NGV air gun head |
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| Country | Link |
|---|---|
| CN (1) | CN213361871U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115681529A (en) * | 2022-12-28 | 2023-02-03 | 济南华信流体控制有限公司 | Fast-assembling valve |
-
2020
- 2020-09-23 CN CN202022104290.8U patent/CN213361871U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115681529A (en) * | 2022-12-28 | 2023-02-03 | 济南华信流体控制有限公司 | Fast-assembling valve |
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