CN213655844U - Gas pipeline pressure regulating device - Google Patents
Gas pipeline pressure regulating device Download PDFInfo
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- CN213655844U CN213655844U CN202022791234.6U CN202022791234U CN213655844U CN 213655844 U CN213655844 U CN 213655844U CN 202022791234 U CN202022791234 U CN 202022791234U CN 213655844 U CN213655844 U CN 213655844U
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- valve body
- filtration
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- pressure regulating
- gas
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- 230000001105 regulatory effect Effects 0.000 title claims abstract description 52
- 238000001914 filtration Methods 0.000 claims abstract description 60
- 239000012535 impurity Substances 0.000 claims abstract description 31
- 238000001125 extrusion Methods 0.000 claims abstract description 23
- 238000003466 welding Methods 0.000 claims description 2
- 238000009434 installation Methods 0.000 abstract description 9
- 239000007789 gas Substances 0.000 description 69
- 239000002737 fuel gas Substances 0.000 description 15
- 230000000694 effects Effects 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000003915 liquefied petroleum gas Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 238000012800 visualization Methods 0.000 description 1
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Abstract
The utility model discloses a gas pipeline pressure regulating device, including governing valve body, extrusion structure and filtration, the extrusion structure is installed at the top of governing valve body, the shutoff structure is installed to the bottom of extrusion structure, the admission line is installed to one side outer wall of governing valve body, filtration is installed at one side top of admission line, just pressure detector is installed at the top of admission line, differential pressure gauge is installed in filtration's front, differential pressure gauge's internally mounted has a set of test tube, and the tail end of test tube extends the inside that gets into the governing valve body, mounting structure is installed to the bottom of admission line, the breather pipe is installed to mounting structure's bottom. The utility model discloses an installation filtration can filter the inside gas that gets into this device, can prevent effectively that the impurity in the gas from slowly accumulating inside the pressure regulating device casing, makes the pressure regulating effect better then.
Description
Technical Field
The utility model relates to a pressure regulation technical field belongs to a gas pipeline pressure regulating device.
Background
Along with the improvement of the current scientific technology and the improvement of the living standard of the public, more and more urban families are connected with fuel gas through pipelines for use, the fuel gas is a general name of gas fuel, the fuel gas releases heat through combustion and then is used by urban residents and industrial enterprises, the variety of the fuel gas is various, the fuel gas mainly comprises natural gas, artificial fuel gas, liquefied petroleum gas, methane and coal gas, when the fuel gas is transmitted to each household through the pipelines, a pressure adjusting device needs to be installed on the pipelines, and then the pressure adjusting device is used for adjusting the fuel gas flow in the pipelines, so that the outlet fuel gas keeps the specified pressure, and the safety of the use of the fuel gas can be kept to a certain degree.
The existing device has the defects that:
1. the existing gas pipeline pressure regulating device is not provided with a filtering structure inside, gas inside the existing gas pipeline pressure regulating device directly enters a shell from a gas inlet, and when the existing gas pipeline pressure regulating device is used for a long time, impurities in the gas can be slowly accumulated in the shell of the existing gas pipeline pressure regulating device, so that the blockage of a pipe is caused, and the pressure regulating effect is further influenced;
2. the existing gas pipeline pressure adjusting device is connected with a gas pipeline by adopting a mode of flange plates or thread butt joint, the two connection modes can have the possibility of medium leakage, and when the device is connected into the gas pipeline, the gas inside the pipeline can be leaked, so that resources are wasted.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a gas pipeline pressure regulating device to solve the problem of mentioning in the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: a gas pipeline pressure regulating device comprises a regulating valve body, an extrusion structure and a filtering structure, wherein the extrusion structure is arranged at the top of the regulating valve body, the bottom of the extrusion structure extends into the regulating valve body, the bottom of the extrusion structure is provided with a plugging structure, an air inlet pipeline is arranged on the outer wall of one side of the regulating valve body, a filtering structure is arranged at the top of one side of the air inlet pipeline, the bottom of the filtering structure penetrates through the interior of the air inlet pipeline, the top of the air inlet pipeline is provided with a pressure detector, the bottom of the pressure detector extends into the air inlet pipeline, the front surface of the filtering structure is provided with a differential pressure gauge, a group of detection pipes are arranged in the differential pressure gauge, and the tail end of the detection pipe extends into the interior of the regulating valve body, a mounting structure is mounted at the bottom of the air inlet pipeline, and a vent pipe is mounted at the bottom of the mounting structure.
Preferably, the internally mounted of filtration has the filtration jar body, and the oblique filter is installed to one side outer wall of the filtration jar body, and the filtration baffle is installed to the opposite side outer wall of the filtration jar body, and the filter screen is installed to the inner wall of the filtration jar body, and the impurity collecting pipe is installed to the bottom of the filtration jar body, and blowdown valve is installed to one side outer wall of the impurity collecting pipe.
Preferably, the mounting structure is internally provided with a connecting ring, the bottom of the connecting ring is provided with an outer ring and a rubber ring, the rubber ring is positioned on the inner side of the outer ring, the bottom of the connecting ring is provided with an inner ring, and the inner ring is positioned on the inner side of the rubber ring.
Preferably, the outer wall of the breather pipe is welded with a connecting ring, and the top of the connecting ring is provided with a clamping ring.
Preferably, the pipeline of giving vent to anger is installed to one side outer wall of governing valve body, and the baffle is installed to the inner wall of governing valve body, and the rubber dog is installed to one side outer wall of baffle.
Preferably, the frame is installed to the roof of governing valve body, and the support column is installed at the top of frame, and the bottom of support column extends into the inside of frame, and the pressure regulating wheel is installed at the top of support column, and the stripper plate is installed to the bottom of support column, and the spring is installed to the bottom of stripper plate, and the bottom plate is installed to the bottom of spring.
Preferably, a long rod is installed inside the blocking structure, and a blocking rubber block is installed at the bottom of the long rod.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model can filter the fuel gas entering the device through the installed filtering structure, can effectively prevent impurities in the fuel gas from slowly accumulating in the pressure adjusting device shell, further influences the pressure adjusting effect, and can filter the fuel gas for the first time through the inclined filtering plate in the device, the pore groove in the inclined filtering plate is in a cone shape, so that the impurities in the fuel gas can be filtered through the inclined filtering plate, the impurities can not drop to the inlet of the pore groove because the impurities are inclined, meanwhile, the impurities can directly slide down to the inside of the impurity collecting pipe because the inclined filtering plate is arranged on the inner wall of the air inlet pipeline, the filtered gas can be secondarily filtered through the filtering baffle plate, meanwhile, the groove hole in the filtering baffle plate is in a cone shape, the hole in the inner side of the filtering baffle plate is larger, the hole in the outer side of the filtering baffle plate is smaller, so that the impurities in the fuel gas are not easy to, the gas can be cleaner, the using effect is better, the filtered impurities can enter the impurity collecting pipe along the filter screen, the impurities can be discharged by adjusting a sewage discharge valve arranged on the outer wall of the impurity collecting pipe, and then the impurities are accumulated in the impurity collecting pipe, so that the blockage of the pipe body is avoided;
2. the utility model discloses a mounting structure of installation can more conveniently connect the breather pipe, and because the agreeing with between each part of its inside, make this device the condition that gas leakage can not appear, the outer lane radius of its inside go-between of installation is greater than the radius of admission line, its inner circle radius is identical with the radius of admission line, can not produce the gap when making it and admission line outer wall welding, produced space between the outer loop of go-between bottom installation and the inner ring is the same with the thickness size of admission line, install the rubber ring through this space top, when making this structure link up with the breather pipe mutually, the rand can be in the better of laminating in produced space between outer loop and the inner ring, reduce the production in gap then, can avoid gas to ooze from the gap between them, can guarantee the security to a certain extent.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the appearance structure of the present invention;
fig. 3 is an exploded view of the mounting structure of the present invention;
fig. 4 is the installation schematic diagram of the installation structure and the vent pipe of the present invention.
In the figure: 1. a regulating valve body; 101. an air intake duct; 102. an air outlet pipe; 103. a baffle plate; 104. a rubber stopper; 2. extruding the structure; 201. a pressure regulating wheel; 202. a support pillar; 203. an outer frame; 204. a pressing plate; 205. a spring; 206. a base plate; 3. a blocking structure; 301. a long bar; 302. plugging the rubber block; 4. a filter structure; 401. filtering the tank body; 402. an inclined filter plate; 403. a filtering baffle; 404. a filter screen; 405. an impurity collecting pipe; 406. a blowdown valve; 5. a pressure detector; 6. a differential pressure gauge; 7. a mounting structure; 701. a connecting ring; 702. an outer ring; 703. a rubber ring; 704. an inner ring; 8. a breather pipe; 801. an adaptor ring; 802. and a collar.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-4, the present invention provides an embodiment: a gas pipeline pressure regulating device comprises a regulating valve body 1, an extrusion structure 2 and a filtering structure 4, wherein the extrusion structure 2 is installed at the top of the regulating valve body 1, the bottom of the extrusion structure 2 extends into the regulating valve body 1, the gas pressure at two ends of a gas pipeline can be regulated through the installed regulating valve body 1, so that the gas pipeline reaches a balanced state, and the gas pipeline pressure regulating device is safer in use, the plugging structure 3 installed at the bottom of the extrusion structure 2 can be driven to separate gas at two ends in the regulating valve body 1 by operating the extrusion structure 2, or the distance between the plugging structure 3 and a rubber stop 104 is regulated, so that the pressure value between pipelines at two sides of the device is regulated, the plugging structure 3 is installed at the bottom of the extrusion structure 2, and the distance between the bottom of the plugging structure 3 and the rubber stop 104 installed in the regulating valve body 1 can be changed by regulating the, can adjust the pressure of gas pipeline upper reaches to a stable within range, then restrict the low reaches pressure in the safe range, inlet line 101 is installed to one side outer wall of governing valve body 1, carry the gas through inlet line 101 and get into the inside of this device, filtration 4 is installed at one side top of inlet line 101, and the inside of inlet line 101 is run through to the bottom of filtration 4, can filter the gas that gets into the inside of this device through filtration 4, can effectively prevent the impurity in the gas from slowly accumulating in pressure adjustment device casing, then influence the pressure regulating effect, pressure detector 5 is installed at the top of inlet line 101, and the bottom of pressure detector 5 extends into the inside of inlet line 101, detect the inside pressure value of inlet line 101 through pressure detector 5, make its inside pressure value can be through numerical value with its visualization, then let the user know its inside concrete pressure situation, the front of filtration 4 installs differential pressure gauge 6, differential pressure gauge 6 installs inside a group of test tube, and the tail end of test tube extends into the inside of governing valve body 1, the tail end of a group of test tube that differential pressure gauge 6 installs in the bottom extends into the inside of admission line 101 and gas outlet pipe 102 respectively, make it can effectively detect the pressure difference of the inside gas of admission line 101 and gas outlet pipe 102, then show through the display panel at its top, let the user know concrete pressure difference, then carry out corresponding operation according to the numerical value obtained, the bottom of admission line 101 installs mounting structure 7, can more conveniently connect breather pipe 8 through mounting structure 7, and because the fit between its inside each part, make this device can not appear the condition of gas leakage, the bottom of the mounting structure 7 is provided with a vent pipe 8, and the vent pipe 8 can be used as a transmission pipeline for gas to enter the device.
Further, a filtering tank body 401 is arranged inside the filtering structure 4, an inclined filtering plate 402 is arranged on the outer wall of one side of the filtering tank body 401, a filtering baffle 403 is arranged on the outer wall of the other side of the filtering tank body 401, a filtering net 404 is arranged on the inner wall of the filtering tank body 401, an impurity collecting pipe 405 is arranged at the bottom of the filtering tank body 401, a sewage discharge valve 406 is arranged on the outer wall of one side of the impurity collecting pipe 405, when gas enters the device from the top of the gas inlet pipeline 101, the gas passes through the inclined filtering plate 402, a hole groove inside the inclined filtering plate 402 is in a cone shape, so that impurities in the gas can be filtered through the inclined filtering plate, the impurities cannot fall to an inlet of the hole groove because the inclined filtering plate, meanwhile, because the inclined filtering plate is arranged on the inner wall of the gas inlet pipeline 101, the filtered impurities can directly slide down to, simultaneously the inside slotted hole of filtering baffle 403 is the tapering form, and the hole of its inboard is great, and the hole in the outside is less for impurity in the gas is difficult to run through the inside in hole groove when filtering, then lets the gas can be cleaner, makes the result of use better, and the impurity of filtering can enter into the inside to impurity collecting pipe 405 along filter screen 404, can discharge impurity through adjusting the blowdown valve 406 of its outer wall installation.
Furthermore, the connecting ring 701 is installed inside the installation structure 7, the outer ring 702 and the rubber ring 703 are installed at the bottom of the connecting ring 701, the rubber ring 703 is located inside the outer ring 702, the inner ring 704 is installed at the bottom of the connecting ring 701, and the inner ring 704 is located inside the rubber ring 703, the outer ring radius of the connecting ring 701 installed inside the structure is larger than the radius of the air inlet pipe 101, the inner ring radius is matched with the radius of the air inlet pipe 101, so that no gap is generated when the inner ring is welded with the outer wall of the air inlet pipe 101, the space generated between the outer ring 702 and the inner ring 704 installed at the bottom of the connecting ring 701 is the same as the thickness of the air inlet pipe 101, and the rubber ring 703 is installed at the top of the space, so that when the structure is connected with the breather pipe 8, the collar 802 can be better attached to the space generated between the outer ring 702 and the inner ring 704, thereby reducing the generation, the safety can be ensured to a certain extent.
Further, the outer wall of breather pipe 8 has welded joint ring 801, and rand 802 is installed to joint ring 801's top, and joint ring 801 is the same with the inner structure of connecting ring 701, and when the staff aligned them, accessible screw runs through its inside logical groove, then links together breather pipe 8 and mounting structure 7, and the rand 802 that joint ring 801 top installation is the same with the thickness of rubber ring 703.
Further, pipeline 102 of giving vent to anger is installed to one side outer wall of governing valve body 1, pipeline 102 of giving vent to anger can be derived through the inside gas of this device, baffle 103 is installed to governing valve body 1's inner wall, baffle 103 can support rubber stopper 104, make it can be more stable when the effect, rubber stopper 104 is installed to one side outer wall of baffle 103, when the effect is used for block structure 3, when inside shutoff rubber piece 302 and rubber stopper 104 are laminated each other, can intercept from the leading-in gas of admission line 101, then cut off the inside gas of gas pipeline.
Further, an outer frame 203 is installed on the top wall of the regulating valve body 1, a supporting column 202 is installed on the top of the outer frame 203, the bottom of the supporting column 202 extends into the outer frame 203, a pressure regulating wheel 201 is installed on the top of the supporting column 202, an extrusion plate 204 is installed on the bottom of the supporting column 202, a spring 205 is installed on the bottom of the extrusion plate 204, a bottom plate 206 is installed on the bottom of the spring 205, the specific position of the extrusion plate 204 installed on the bottom of the pressure regulating wheel 201 can be controlled by rotating the pressure regulating wheel 201, when the pressure regulating wheel rotates downwards, the supporting column 202 can drive all parts installed at the bottom of the supporting column to descend, then the distance between the rubber stopper 104 and the plugging rubber block 302 is increased, when the pressure value of gas inside the gas inlet pipeline 101 is large, the gas entering the device can flow towards the upper part inside the regulating valve body 1, the plugging structure 3 installed at the bottom of the gas inlet pipe is attached to the outer wall of the rubber stopper 104, so that the gas inlet pipe 101 and the gas outlet pipe 102 are separated from each other, and the circulation of gas can be blocked.
Further, the internally mounted of block structure 3 has rectangular pole 301, and the shutoff rubber piece 302 is installed to the bottom of rectangular pole 301, when the effort was used for the top of extrusion structure 2, can drive rectangular pole 301 and adjust the distance between shutoff rubber piece 302 and the rubber dog 104, then can adjust the pressure of gas pipeline upper reaches to a stable within range, then with the restriction of low reaches pressure in safe range.
The working principle is as follows: before using the device, a worker firstly checks whether each part of the device is intact, then inputs gas into the device through the gas inlet pipeline 101, at the moment, the position of each part installed at the bottom of the device can be lowered by rotating the pressure regulating wheel 201, then the plugging structure 3 is driven to descend, the distance between the bottom of the plugging structure and the rubber stopper 104 can be enlarged, then the gas enters the gas outlet pipeline 102, when the pressure value of the gas in the gas inlet pipeline 101 is larger, the gas entering the device flows towards the upper part inside the regulating valve body 1, the stronger pressure of the gas can generate extrusion force on the extrusion plate 204, then the spring 205 is upwards contracted, the plugging structure 3 installed at the bottom of the gas inlet pipeline is attached to the outer wall of the rubber stopper 104, then the gas inlet pipeline 101 is separated from the gas outlet pipeline 102, and the circulation of the gas can be blocked, when gas passes through pressure adjusting spring 205 and is not enough to carry out the shutoff between inlet tube 101 and the pipeline 102 of giving vent to anger, accessible manual regulation pressure regulating wheel 201, then drive the part of its bottom and move toward the top, until with inlet tube 101 with give vent to anger between the pipeline 102 block up can, and this device is inside to have filtration 4 at inlet tube 101's internally mounted, can filter the inside gas that gets into this device, can prevent effectively that impurity in the gas from slowly accumulating inside the pressure adjustment device casing, then influence the pressure regulating effect.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (7)
1. The utility model provides a gas pipeline pressure regulating device, includes governing valve body (1), extrusion structure (2) and filtration (4), its characterized in that: extrusion structure (2) is installed at the top of governing valve body (1), and the bottom of extrusion structure (2) extends into the inside of governing valve body (1), block structure (3) is installed to the bottom of extrusion structure (2), admission line (101) is installed to one side outer wall of governing valve body (1), filtration (4) are installed at one side top of admission line (101), and the bottom of filtration (4) runs through the inside of admission line (101), pressure detector (5) are installed at the top of admission line (101), and the bottom of pressure detector (5) extends into the inside of admission line (101), differential pressure gauge (6) is installed in the front of filtration (4), the internally mounted of differential pressure gauge (6) has a set of test tube, and the tail end of test tube extends into the inside of governing valve body (1), mounting structure (7) are installed to the bottom of admission line (101), breather pipe (8) are installed to the bottom of mounting structure (7).
2. A gas pipeline pressure regulating device according to claim 1, characterized in that: the internally mounted of filtration (4) has the filtration jar body (401), and oblique filter (402) are installed to one side outer wall of the filtration jar body (401), and the opposite side outer wall of the filtration jar body (401) is installed and is filtered baffle (403), and filter screen (404) are installed to the inner wall of the filtration jar body (401), and impurity collecting pipe (405) are installed to the bottom of the filtration jar body (401), and blowdown valve (406) are installed to one side outer wall of impurity collecting pipe (405).
3. A gas pipeline pressure regulating device according to claim 1, characterized in that: the inner mounting of mounting structure (7) has go-between (701), and outer ring (702) and rubber ring (703) are installed to the bottom of go-between (701), and rubber ring (703) are located the inboard of outer ring (702), and inner ring (704) are installed to the bottom of go-between (701), and inner ring (704) are located the inboard of rubber ring (703).
4. A gas pipeline pressure regulating device according to claim 1, characterized in that: the outer wall welding of breather pipe (8) has linking ring (801), and rand (802) are installed to the top of linking ring (801).
5. A gas pipeline pressure regulating device according to claim 1, characterized in that: an air outlet pipeline (102) is installed on the outer wall of one side of the adjusting valve body (1), a baffle (103) is installed on the inner wall of the adjusting valve body (1), and a rubber stop block (104) is installed on the outer wall of one side of the baffle (103).
6. A gas pipeline pressure regulating device according to claim 1, characterized in that: frame (203) are installed to the roof of governing valve body (1), and support column (202) are installed at the top of frame (203), and the bottom of support column (202) extends into the inside of frame (203), and pressure regulating wheel (201) are installed at the top of support column (202), and stripper plate (204) are installed to the bottom of support column (202), and spring (205) are installed to the bottom of stripper plate (204), and bottom plate (206) are installed to the bottom of spring (205).
7. A gas pipeline pressure regulating device according to claim 1, characterized in that: the inside of block structure (3) is installed long strip pole (301), and shutoff rubber piece (302) are installed to the bottom of long strip pole (301).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022791234.6U CN213655844U (en) | 2020-11-26 | 2020-11-26 | Gas pipeline pressure regulating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022791234.6U CN213655844U (en) | 2020-11-26 | 2020-11-26 | Gas pipeline pressure regulating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213655844U true CN213655844U (en) | 2021-07-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022791234.6U Active CN213655844U (en) | 2020-11-26 | 2020-11-26 | Gas pipeline pressure regulating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213655844U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113531396A (en) * | 2021-08-13 | 2021-10-22 | 四川博德蚁穴建设工程有限公司 | Conveying device based on gas conveying and convenient to adjust |
-
2020
- 2020-11-26 CN CN202022791234.6U patent/CN213655844U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113531396A (en) * | 2021-08-13 | 2021-10-22 | 四川博德蚁穴建设工程有限公司 | Conveying device based on gas conveying and convenient to adjust |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Li Wei Inventor after: Li Huili Inventor after: Yue Zhaoguang Inventor after: An Yan Inventor after: Gan Jiping Inventor before: Gan Jiping |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20231211 Address after: 453000 Expo Manor, Xinxiang Economic Development Zone, Xinxiang City, Henan Province Patentee after: Xinxiang Xinpeng Gas Co.,Ltd. Address before: Room 3201, 76 Huangpu Avenue West, Tianhe District, Guangzhou, Guangdong 510000 Patentee before: Gan Jiping |