CN107461537B - Safe and reliable compressed natural gas pressure reducing regulator for automobile - Google Patents
Safe and reliable compressed natural gas pressure reducing regulator for automobile Download PDFInfo
- Publication number
- CN107461537B CN107461537B CN201710659660.4A CN201710659660A CN107461537B CN 107461537 B CN107461537 B CN 107461537B CN 201710659660 A CN201710659660 A CN 201710659660A CN 107461537 B CN107461537 B CN 107461537B
- Authority
- CN
- China
- Prior art keywords
- valve body
- main valve
- pressure reducing
- natural gas
- compressed natural
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 48
- 239000003345 natural gas Substances 0.000 title claims abstract description 24
- 230000006837 decompression Effects 0.000 claims abstract description 44
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 44
- 238000007789 sealing Methods 0.000 claims abstract description 17
- 230000000694 effects Effects 0.000 abstract description 6
- 239000007789 gas Substances 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
The invention discloses a safe and reliable compressed natural gas pressure reducing regulator for an automobile, which comprises a main valve body and an electromagnetic valve body, wherein a positioning hole is formed in the center of a convex surface on one side of the main valve body, an undercut groove and a positioning spigot are formed in the orifice of the positioning hole, a water circulation flow passage close to a primary pressure reducing cavity and a secondary pressure reducing cavity is formed in the main valve body, the diameter and the volume of the secondary pressure reducing cavity are both larger than those of the positioning hole of the secondary pressure reducing valve port, and a waist-shaped flange surface and an air outlet interface which are connected into a whole are formed in the bottom of the electromagnetic valve body. According to the invention, the connection mode of the electromagnetic valve body and the main valve body is improved through design, so that the connection and sealing of the electromagnetic valve body and the main valve body are safer, and an air inlet joint can be omitted; the water circulation flow channel is reasonably designed in the main valve body, so that the heat conduction effect of the water circulation flow channel is better, and the compressed natural gas is ensured to be fully atomized; the diameter and the volume of the secondary decompression cavity are improved and increased, so that the compressed natural gas discharge is more stable.
Description
Technical Field
The invention relates to the field of pressure reducing regulators, in particular to a safe and reliable compressed natural gas pressure reducing regulator for automobiles.
Background
The existing compressed natural gas pressure reducing regulator for automobiles is generally provided with an electromagnetic valve body and a water circulation flow channel on a convex surface on one side of a main valve body, and the bottom of the electromagnetic valve body is mostly processed into a flat square with a through hole in a connecting mode of the electromagnetic valve body and the main valve body, an air inlet connector is screwed on the convex surface of the main valve body, the electromagnetic valve body is fastened and positioned on the main valve body through plane hard sealing of a red copper gasket, meanwhile, the pressure reducing regulator is limited in structural design, and the diameter and the volume of a secondary pressure reducing cavity arranged inside the main valve body are always smaller, as shown in fig. 1. The structure has certain technical defects: firstly, because the high-pressure compressed natural gas comes out from the bottom of the electromagnetic valve body, the electromagnetic valve body and the main valve body are in hard sealing connection by adopting a red copper gasket plane, a certain potential safety hazard exists, if the operation is slightly careless, the high-pressure compressed natural gas can leak out of the red copper gasket plane, the life safety of people is directly endangered, and the consequence is not considered; secondly, the water circulation flow channel is arranged on the convex surface at one side of the main valve body, so that the area of heat conduction is relatively small, and the water circulation flow channel is far away from the primary pressure reducing cavity and the secondary pressure reducing cavity in the main valve body, so that the heat conduction effect is greatly influenced, and the compressed natural gas cannot be fully atomized; thirdly, because the diameter and the volume of the secondary decompression cavity arranged in the main valve body are smaller, when the accelerator of the automobile is pulled down, the secondary decompression cavity is easy to cause that the instantaneous exhaust of the secondary decompression cavity cannot keep pace, and the gas emission fluctuation is generated, so that the running quality of the automobile is influenced.
Disclosure of Invention
Aiming at the problems, the technical problem to be solved by the invention is to overcome the defects in the prior art, and provide a safe and reliable compressed natural gas pressure reducing regulator for automobiles, which ensures that the electromagnetic valve body is connected and sealed with the main valve body more safely, the compressed natural gas is discharged more stably, the heat conduction effect of the water circulation flow channel is better, and the compressed natural gas is ensured to be fully atomized.
In order to achieve the above purpose, the invention adopts the following technical scheme: the utility model provides a safe and reliable's compressed natural gas pressure reducing regulator for car, includes main valve body and solenoid valve body, the solenoid valve body is established in one side bulge face of main valve body, is equipped with solenoid on the solenoid valve body, the lower extreme of main valve body is equipped with the lower extreme cover, and the upper end of main valve body is equipped with the upper end cover, the upper end cover is equipped with the evacuation joint, the inside of main valve body is equipped with one-level decompression chamber and second grade decompression chamber, be equipped with one-level decompression device between one-level decompression chamber of main valve body and the lower extreme cover inner chamber, be equipped with second grade decompression device between two-level decompression chamber of main valve body and the upper end cover inner chamber, one side bulge face of main valve body is the waist shape, and its center portion is equipped with locating hole and one-level decompression chamber of main valve body is linked together, the both sides of locating hole are equipped with the internal thread hole, and the drill way department of locating hole is equipped with countersink tank and location tang, countersink tank and location tang all are equipped with O shape sealing washer in, solenoid valve body upper portion is equipped with valve body working chamber, inlet connection and manometer interface, and solenoid valve body bottom is equipped with waist shape flange face and outlet interface as an organic whole, waist shape flange face, the both ends are equipped with the outer circle flange face, the outer circle face is equipped with the fixed hole, the valve port is equipped with the vent hole, the seal hole is equipped with the inner chamber with the seal cavity that is linked together with the air outlet interface, the seal cavity is equipped with the air outlet port on the periphery, the valve body and has the valve port.
The invention has the advantages that the positioning hole is arranged at the center of the convex surface on one side of the main valve body and is communicated with the first-stage decompression cavity of the main valve body, the countersink and the positioning spigot are arranged at the orifice of the positioning hole, the bottom of the electromagnetic valve body is provided with the waist-shaped flange surface and the air outlet interface which are connected into a whole, and the radial sealing baffle and the axial sealing baffle are arranged on the excircle of the air outlet interface, so that the soft sealing of the double-layer O-shaped sealing ring can be realized, and the connection sealing of the electromagnetic valve body and the main valve body is safer and more reliable.
Further, a water circulation flow passage is further arranged in the main valve body, and the water circulation flow passage is horizontally arranged in a U shape close to the primary pressure reducing cavity and the secondary pressure reducing cavity of the main valve body. The heat conduction effect of the water circulation flow channel is better, and the compressed natural gas is ensured to be fully atomized.
Further, a second-stage pressure reducing valve port positioning hole is arranged between the first-stage pressure reducing cavity and the second-stage pressure reducing cavity in the main valve body, and the diameter and the volume of the second-stage pressure reducing cavity are both larger than those of the second-stage pressure reducing valve port positioning hole. The diameter and the volume of the secondary decompression cavity are improved and increased, so that the compressed natural gas emission is more stable.
Further, an air outlet connector, a safety valve, a water inlet connector and a water outlet connector are arranged on the front surface of the outer portion of the main valve body, a water temperature sensing connector is arranged beside a convex surface on one side of the main valve body, the safety valve is in threaded connection and communication with the primary pressure reducing cavity, the air outlet connector is in threaded connection and communication with the secondary pressure reducing cavity, the water inlet connector and the water outlet connector are in threaded connection and communication with the water circulation flow channel, and the water temperature sensing connector is in threaded connection and positioning with the water circulation flow channel.
Further, the shape and the size of the waist-shaped flange surface at the bottom of the electromagnetic valve body are consistent with the cross-sectional shape and the size of the convex surface at one side of the main valve body, and the center distance of the two fixing holes on the waist-shaped flange surface is consistent with the center distance of the two internal threaded holes on the convex surface at one side of the main valve body.
The invention has the beneficial effects that: according to the invention, the connection mode of the electromagnetic valve body and the main valve body is improved through design, so that the connection and sealing of the electromagnetic valve body and the main valve body are safer, and an air inlet joint can be omitted; the water circulation flow channel is reasonably designed in the main valve body, so that the heat conduction effect of the water circulation flow channel is better, and the compressed natural gas is ensured to be fully atomized; the diameter and the volume of the secondary decompression cavity are improved and increased, so that the compressed natural gas discharge is more stable.
Drawings
Fig. 1 is a schematic diagram of a prior art structure.
Fig. 2 is a cross-sectional view of the structure of the present invention.
Fig. 3 is a right side view of fig. 2.
Fig. 4 is a left side view of fig. 3.
Fig. 5 is a cross-sectional view A-A of fig. 4.
Fig. 6 is a structural cross-sectional view of a main valve body in the present invention.
Fig. 7 is a right side view of fig. 6.
Fig. 8 is a schematic structural view of the solenoid valve body in the present invention.
Fig. 9 is a sectional view of K-K in fig. 8.
In the figure, a main valve body, a lower end cover 2, a first-stage decompression cavity 3, a first-stage decompression device 4, a first-stage decompression valve core 5, a solenoid valve body 6, a solenoid coil 7, a second-stage decompression cavity 8, an upper end cover 9, a second-stage decompression device 10, a water circulation runner 11, a vacuumizing joint 12, a gas outlet joint 13, a water inlet joint 14, a safety valve 15, a socket head cap screw 16, a water temperature sensing joint 17, a water outlet joint 18, a positioning hole 19, a 20-undercut groove 21, a positioning spigot 22, a second-stage decompression valve port positioning hole 23, a threaded hole 24, a kidney-shaped flange surface 25, a gas inlet interface 26, a pressure gauge interface 27, a first-stage decompression valve port 28, a gas outlet hole 29, a radial sealing block 30, an axial sealing block 31, a valve body working cavity 32 and a fixing hole 33.
Detailed Description
In order to enable those skilled in the art to better understand the present invention, the following description will make clear and complete descriptions of the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention.
As shown in fig. 2 to 9, the safe and reliable compressed natural gas pressure reducing regulator for automobiles comprises a main valve body 1 and an electromagnetic valve body 6, wherein the electromagnetic valve body 6 is arranged on a convex surface on one side of the main valve body 1, an electromagnetic coil 7 is arranged on the electromagnetic valve body 6, a lower end cover 2 is arranged at the lower end of the main valve body 1, an upper end cover 9 is arranged at the upper end of the main valve body 1, a vacuumizing joint 12 is arranged at the upper end cover 9, a primary pressure reducing cavity 3 and a secondary pressure reducing cavity 8 are arranged in the main valve body 1, a primary pressure reducing device 4 is arranged between the primary pressure reducing cavity 3 of the main valve body 1 and the inner cavity of the lower end cover 2, a secondary pressure reducing device 10 is arranged between the secondary pressure reducing cavity 8 of the main valve body 1 and the inner cavity of the upper end cover 9, in order to ensure that the connection and sealing between the electromagnetic valve body 6 and the main valve body 1 are safer, one side bulge of the main valve body 1 is in a waist shape, the center of the main valve body is provided with a positioning hole 19 communicated with a first-stage decompression cavity 3 of the main valve body 1, both sides of the positioning hole 19 are provided with internal threaded holes 23, the orifice of the positioning hole 19 is provided with a countersink 20 and a positioning spigot 21, O-shaped sealing rings are respectively arranged in the countersink 20 and the positioning spigot 21, the upper part of the electromagnetic valve body 6 is provided with a valve body working cavity 32, an air inlet interface 25 and a pressure gauge interface 26, the bottom of the electromagnetic valve body 6 is provided with a waist-shaped flange surface 24 and an air outlet interface 28 which are connected, both end corners of the waist-shaped flange surface 24 are provided with fixing holes 33, the excircle of the air outlet port 28 is provided with a radial sealing baffle 30, an axial sealing baffle 31 and 4 air outlet holes 29 which are uniformly distributed on the circumference of the same section, the air outlet holes 29 are communicated with the inner cavity of the air outlet port 28, the bottom of the inner cavity of the air outlet port 28 is provided with a primary pressure reducing valve port 27, the primary pressure reducing valve port 27 is communicated with a valve body working cavity 32, the inner cavity of the air outlet port 28 is provided with a primary pressure reducing valve core 5, the shape and the size of a waist-shaped flange surface 24 at the bottom of the electromagnetic valve body 6 are consistent with the shape and the size of the section of a convex surface at one side of the main valve body 1, the center distance of two fixing holes 33 on the waist-shaped flange surface 24 is consistent with the center distance of two internal threaded holes 23 on the convex surface at one side of the main valve body 1, the electromagnetic valve body 6 is fastened and positioned on a convex surface on one side of the main valve body 1 through an inner hexagon screw 16. In order to ensure that the heat conduction effect of the water circulation flow channel is better and the fully atomized compressed natural gas is ensured, the water circulation flow channel 11 is also arranged in the main valve body 1, the water circulation flow channel 11 is horizontally arranged in a U shape close to the primary pressure reducing cavity 3 and the secondary pressure reducing cavity 8 of the main valve body 1, the front surface of the outer part of the main valve body 1 is provided with an air outlet joint 13, a safety valve 15, a water inlet joint 14 and a water outlet joint 18, a water temperature sensing joint 17 is arranged beside a convex surface on one side of the main valve body 1, the safety valve 15 is in threaded connection with the primary pressure reducing cavity 3, the air outlet joint 13 is in threaded connection with the secondary pressure reducing cavity 8, the water inlet joint 14 and the water outlet joint 18 are in threaded connection with the water circulation flow channel 11, the water temperature sensing joint 17 is in threaded connection with the water circulation runner 11. In order to improve and increase the volume of the secondary decompression cavity and enable the compressed natural gas to be discharged more stably, a secondary decompression valve port positioning hole 22 is arranged between the primary decompression cavity 3 and the secondary decompression cavity 8 in the main valve body 1, and the diameter and the volume of the secondary decompression cavity 8 are both larger than those of the secondary decompression valve port positioning hole 22 through deep processing.
Claims (3)
1. The utility model provides a safe and reliable's compressed natural gas pressure reducing regulator for car, includes main valve body (1) and solenoid valve body (6), solenoid valve body (6) establish the one side bulge face at main valve body (1), be equipped with solenoid (7) on solenoid valve body (6), the lower extreme of main valve body (1) is equipped with lower end cover (2), and the upper end of main valve body (1) is equipped with upper end cover (9), upper end cover (9) are equipped with evacuation joint (12), the inside of main valve body (1) is equipped with one-level decompression chamber (3) and second grade decompression chamber (8), be equipped with one-level decompression device (4) between one-level decompression chamber (3) and lower end cover (2) inner chamber of main valve body (1), be equipped with second grade decompression device (10) between second grade decompression chamber (8) and upper end cover (9) inner chamber of main valve body (1), its characterized in that, one side bulge face of main valve body (1) is the waist shape, and the central part is equipped with locating hole (19) and main valve body's one-level decompression chamber (3) are linked together, locating hole (19) is equipped with countersunk hole (19) and locating slot (21) and locating slot (20) are equipped with in the same place, sealing washer (21) and locating slot (20), the electromagnetic valve body (6) upper portion is equipped with valve body working chamber (32), inlet port (25) and manometer interface (26), and electromagnetic valve body (6) bottom is equipped with waist shape flange face (24) and the interface (28) of giving vent to anger as an organic whole, the both ends angle of waist shape flange face (24) is equipped with fixed orifices (33), be equipped with radial seal baffle (30), axial seal baffle (31) and 4 ventholes (29) of establishing at same cross-section circumference equipartition on the excircle of interface (28) of giving vent to anger, venthole (29) are linked together with interface (28) inner chamber of giving vent to anger, interface (28) inner chamber bottom is equipped with one-level decompression valve port (27), one-level decompression valve port (27) are linked together with valve body working chamber (32), the inner chamber of interface (28) of giving vent to anger is equipped with one-level decompression valve core (5), the inside of main valve body (1) still is equipped with water circulation runner (11), one-level decompression chamber (3) and second-level decompression chamber (8) of main valve body (1) are U-shaped level setting, one-level decompression chamber (3) and second-level decompression chamber (8) are equipped with one-level decompression chamber (7) and two-level decompression chamber (7), the diameter and the volume of the secondary pressure reducing cavity (8) are larger than those of the secondary pressure reducing valve port positioning hole (22).
2. The safe and reliable compressed natural gas pressure reducing regulator for the automobile according to claim 1, wherein an air outlet joint (13), a safety valve (15), a water inlet joint (14) and a water outlet joint (18) are arranged on the outer front surface of the main valve body (1), a water temperature sensing joint (17) is further arranged beside a convex surface on one side of the main valve body (1), the safety valve (15) is in threaded connection with the primary pressure reducing cavity (3), the air outlet joint (13) is in threaded connection with the secondary pressure reducing cavity (8), the water inlet joint (14) and the water outlet joint (18) are in threaded connection with the water circulation flow channel (11), and the water temperature sensing joint (17) is in threaded connection with the water circulation flow channel (11).
3. The safe and reliable compressed natural gas pressure reducing regulator for automobiles according to claim 1, wherein the shape and the size of a waist-shaped flange surface (24) at the bottom of the electromagnetic valve body (6) are consistent with the shape and the size of a cross section of a convex surface at one side of the main valve body (1), and the center distance of two fixing holes (33) on the waist-shaped flange surface (24) is consistent with the center distance of two internal threaded holes (23) on the convex surface at one side of the main valve body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710659660.4A CN107461537B (en) | 2017-07-27 | 2017-07-27 | Safe and reliable compressed natural gas pressure reducing regulator for automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710659660.4A CN107461537B (en) | 2017-07-27 | 2017-07-27 | Safe and reliable compressed natural gas pressure reducing regulator for automobile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107461537A CN107461537A (en) | 2017-12-12 |
| CN107461537B true CN107461537B (en) | 2024-05-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710659660.4A Active CN107461537B (en) | 2017-07-27 | 2017-07-27 | Safe and reliable compressed natural gas pressure reducing regulator for automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107461537B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110094279B (en) * | 2019-04-23 | 2020-02-21 | 武汉洪斯德汽车有限公司 | Pressure reducing valve capable of accurately adjusting flow |
| CN112747156B (en) * | 2021-01-12 | 2022-10-14 | 北京卫星制造厂有限公司 | High-precision large-pressure-reduction-ratio automatic pressure-regulating gas pressure-stabilizing pressure-reducing combined valve |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2368762Y (en) * | 1999-05-27 | 2000-03-15 | 北京理工大学 | Three channel pressure regulator for hydraulic brake antilocking system of vehicle |
| CN202580182U (en) * | 2012-05-08 | 2012-12-05 | 河南欧意环保科技股份有限公司 | Gas pressure regulator for vehicle |
| CN104595498A (en) * | 2015-01-23 | 2015-05-06 | 四川森洁燃气设备有限公司 | Automobile pressure reducing valve |
| CN204420230U (en) * | 2014-12-17 | 2015-06-24 | 上虞市通利流体控制有限公司 | A kind of high-pressure solenoid valve of docking with pressure reducing regulator |
| CN207093891U (en) * | 2017-07-27 | 2018-03-13 | 绍兴上虞尚益德机电有限公司 | Safe and reliable pressure-reducing regulator for compressed natural gas used in vehicle |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4928959B2 (en) * | 2007-01-25 | 2012-05-09 | 株式会社ケーヒン | Gas pressure reducing valve |
| CA2806811C (en) * | 2010-08-06 | 2014-09-09 | Kawasaki Jukogyo Kabushiki Kaisha | Gas pressure regulating valve |
-
2017
- 2017-07-27 CN CN201710659660.4A patent/CN107461537B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2368762Y (en) * | 1999-05-27 | 2000-03-15 | 北京理工大学 | Three channel pressure regulator for hydraulic brake antilocking system of vehicle |
| CN202580182U (en) * | 2012-05-08 | 2012-12-05 | 河南欧意环保科技股份有限公司 | Gas pressure regulator for vehicle |
| CN204420230U (en) * | 2014-12-17 | 2015-06-24 | 上虞市通利流体控制有限公司 | A kind of high-pressure solenoid valve of docking with pressure reducing regulator |
| CN104595498A (en) * | 2015-01-23 | 2015-05-06 | 四川森洁燃气设备有限公司 | Automobile pressure reducing valve |
| CN207093891U (en) * | 2017-07-27 | 2018-03-13 | 绍兴上虞尚益德机电有限公司 | Safe and reliable pressure-reducing regulator for compressed natural gas used in vehicle |
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| CN107461537A (en) | 2017-12-12 |
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Effective date of registration: 20240507 Address after: 416-10, Building E3, Xingzhuang Science and Technology Industrial Park, No. 288 Qinhuai Avenue, Yongyang Street, Lishui District, Nanjing City, Jiangsu Province, 210000 Applicant after: Nanjing Huaiyangui Electronic Technology Co.,Ltd. Country or region after: China Address before: 312352 Xujiatang Village, Cao'e Street, Shangyu District, Shaoxing City, Zhejiang Province Applicant before: SHAOXING SHANGYU SHANGYIDE ELECTROMECHANICAL CO.,LTD. Country or region before: China |
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