CN111486753A - Tandem type fracturing device - Google Patents
Tandem type fracturing device Download PDFInfo
- Publication number
- CN111486753A CN111486753A CN201910076699.2A CN201910076699A CN111486753A CN 111486753 A CN111486753 A CN 111486753A CN 201910076699 A CN201910076699 A CN 201910076699A CN 111486753 A CN111486753 A CN 111486753A
- Authority
- CN
- China
- Prior art keywords
- tubes
- pipe
- gas
- cracking
- liquid storage
- 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.)
- Pending
Links
- 239000007788 liquid Substances 0.000 claims abstract description 35
- 238000005336 cracking Methods 0.000 claims abstract description 34
- 238000003860 storage Methods 0.000 claims abstract description 34
- 238000004806 packaging method and process Methods 0.000 claims abstract description 15
- 238000007789 sealing Methods 0.000 claims description 25
- 238000003466 welding Methods 0.000 claims description 11
- 239000007769 metal material Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 230000008901 benefit Effects 0.000 abstract description 6
- 239000011435 rock Substances 0.000 abstract description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 229910002092 carbon dioxide Inorganic materials 0.000 description 3
- 239000001569 carbon dioxide Substances 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000003776 cleavage reaction Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000007017 scission Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B3/00—Blasting cartridges, i.e. case and explosive
- F42B3/04—Blasting cartridges, i.e. case and explosive for producing gas under pressure
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Bag Frames (AREA)
Abstract
The invention belongs to the technical field of rock expansion fracturing equipment, and discloses a serial fracturing device which comprises a plurality of fracturing pipes which are connected in series in a straight line, wherein a one-way valve for filling gas and packaging the gas is arranged between every two adjacent fracturing pipes; the cracking tubes comprise liquid storage tubes with closed gas containing spaces, gas inlet tubes and gas outlet tubes, the gas inlet tubes and the gas outlet tubes are respectively arranged at two ends of the liquid storage tubes and are communicated with the gas containing spaces, and the gas outlet tube of each cracking tube is communicated with the gas inlet tube of the adjacent cracking tube after passing through the one-way valve. Compared with the prior art, the tandem type fracturing device has the advantages that the plurality of fracturing pipes are connected in series through the one-way valve, so that different length specifications can be flexibly assembled, and the use requirement is met; the standardization of products is facilitated and the overall equipment cost is reduced. The inflation component inflates air to the liquid storage pipes which are connected in series downwards, the one-way valve is used for realizing inflation and packaging, and the technical problem of inflation and packaging of the plurality of cracking pipes which are connected in series is solved.
Description
Technical Field
The invention belongs to the technical field of rock expansion fracturing equipment, and particularly relates to a serial-type fracturing device.
Background
The carbon dioxide cracking pipe is formed by heating, gasifying and expanding liquid carbon dioxide and then quickly releasing high-pressure gas to break rocks or coal. The expansion capacity is controllable, the power is high, shock waves are not generated, and the like, so that the expansion device is widely applied to the fields of urban improvement, urban construction, mineral exploitation and the like.
In the related technology, the carbon dioxide fracturing pipe is used in a single piece, namely, one fracturing pipe is placed in one fracturing hole, and after gas filling is carried out on site, expansion is caused, so that fracturing operation is realized. However, when the depth of the cracking hole is deep, a single cracking tube with a conventional size cannot meet the requirement, and the conventional single cracking tube can be considered to be connected in series to prolong the overall length, but the technical problems of inflation and packaging of a plurality of serially connected cracking tubes cannot be solved in the related art, so that the method cannot be effectively popularized. In order to solve the technical problem, the scheme in the related art is as follows: according to different depths of the fracturing holes, fracturing pipes with various lengths are specially manufactured. The method has the defects that the equipment cost is greatly increased, the product specification is complicated, and the field management and standardization are not facilitated.
Therefore, there is a need to provide a new in-line fracker to solve the above problems.
Disclosure of Invention
The invention provides a series type fracturing device, which aims to solve the technical problems in the background technology.
The technical scheme provided by the invention is as follows: a serial cracking device comprises a plurality of cracking tubes which are connected in series in a straight line shape, wherein a one-way valve for filling gas and packaging the gas is arranged between every two adjacent cracking tubes; the cracking tubes comprise liquid storage tubes with closed gas containing spaces, gas inlet tubes and gas outlet tubes, the gas inlet tubes and the gas outlet tubes are respectively arranged at two ends of the liquid storage tubes and are communicated with the gas containing spaces, and the gas outlet tube of each cracking tube is communicated with the gas inlet tube of the adjacent cracking tube after passing through the one-way valve.
Preferably, the liquid storage pipe comprises an annular pipe main body, and a bottom sealing piece and a top sealing piece which are respectively arranged at two ends of the pipe main body; the bottom sealing piece and the pipe main body and the top sealing piece and the pipe main body are fixedly connected in a sealing manner, and the gas accommodating space is enclosed by the pipe main body, the bottom sealing piece and the top sealing piece.
Preferably, the liquid storage pipe is made of steel; and a sealing, fixing and connecting structure is formed between the bottom sealing piece and the pipe main body and between the top sealing piece and the pipe main body in a welding mode.
Preferably, the liquid storage pipe is integrally hollow cylindrical.
Preferably, the air inlet pipe is made of a metal material, and the air inlet pipe is fixedly connected with the liquid storage pipe in a welding mode and/or a threaded connection mode; the air outlet pipe is made of metal materials, and the air outlet pipe is fixedly connected with the liquid storage pipe in a welding mode and/or a threaded connection mode.
Preferably, the air inlet pipe and the air outlet pipe are both hollow cylinders, and the air inlet pipe, the liquid storage pipe and the air outlet pipe are coaxially arranged.
Preferably, the outer diameter of the air inlet pipe and the outer diameter of the air outlet pipe are both 1/12-1/6 times of the outer diameter of the liquid storage pipe.
Preferably, the number of the cracking tubes is two, and the one-way valve is one; or the number of the cracking tubes is n, wherein: n is a natural number and is more than or equal to 3, the number of the one-way valves is n-1, and the one-way valves are all arranged in the same direction.
Preferably, the fracturing pipe is made of a plastic material.
Compared with the prior art, the tandem type fracturing device has the advantages that the plurality of fracturing pipes are connected in series through the check valve, so that the overall length of the tandem type fracturing device can be prolonged, different numbers of fracturing pipes can be connected in series according to different field conditions to form different overall lengths, the tandem type fracturing device is suitable for fracturing holes with different depths, different length specifications can be flexibly assembled, and the use requirements can be met; the standardization of products is facilitated and the overall equipment cost is reduced. The inflation component inflates air to the liquid storage pipes which are connected in series downwards, the one-way valve is used for realizing inflation and packaging, and the technical problem of inflation and packaging of the plurality of cracking pipes which are connected in series is solved.
Drawings
FIG. 1 is a schematic view of a tandem structure of two cracking tubes according to the present invention;
FIG. 2 is a schematic view of a series structure of four cracking tubes according to the present invention;
FIG. 3 is a schematic structural view of the cleavage tube of the present invention.
In the figure:
the cracking tube 1, the one-way valve 2,
a liquid storage pipe 11, an air inlet pipe 12 and an air outlet pipe 13;
a tube body 111, a bottom seal 112, and a top seal 113.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to the attached drawings 1-3, a series type fracturing device comprises a plurality of fracturing pipes 1 which are connected in series in a straight line shape, wherein a one-way valve 2 for gas filling and gas packaging is arranged between every two adjacent fracturing pipes 1; the cracking tubes 1 comprise liquid storage tubes 11 with closed gas containing spaces, gas inlet tubes 12 and gas outlet tubes 13 which are respectively arranged at two ends of the liquid storage tubes 11 and are communicated with the gas containing spaces, and the gas outlet tube 13 of each cracking tube 1 is communicated with the gas inlet tube 12 of the adjacent cracking tube 1 after passing through the one-way valve 2. In the invention, a plurality of fracturing pipes 1 are connected in series by utilizing the one-way valve 2, the overall length can be prolonged, and different numbers of fracturing pipes 1 can be connected in series according to different field conditions to form different overall lengths so as to adapt to fracturing holes with different depths and meet the use requirements. The top end of the top fracturing pipe 1 in the serial fracturing device is provided with an inflation assembly, the inflation assembly inflates the liquid storage pipes 11 which are connected in series downwards, and the one-way valve 2 is used for inflating and packaging. Therefore, different length specifications can be flexibly assembled and formed, and the technical problems of inflation and packaging of the multiple split tubes 1 after being connected in series are solved.
In the present embodiment, the reservoir tube 11 includes an annular tube main body 112, and a bottom seal 113 and a top seal 114 provided at both ends of the tube main body 112, respectively; the bottom sealing piece 113 and the tube main body 112, and the top sealing piece 114 and the tube main body 112 are fixedly connected in a sealing manner, and the gas accommodating space is defined by the tube main body 112, the bottom sealing piece 113 and the top sealing piece 114. In this design, the structural design of liquid storage pipe 11 adoption three-section components of a whole that can function independently does benefit to the shaping, reduces the processing degree of difficulty, does benefit to the equipment of the inside original paper of liquid storage pipe 11 simultaneously, and is specific, and the inside original paper of liquid storage pipe 11 sends the original paper etc. including causing the inflation.
In the present embodiment, the reservoir pipe 11 is made of steel; the bottom sealing piece 113 and the tube main body 112, and the top sealing piece 114 and the tube main body 112 are welded to form a sealed, fixed and connected structure. In this design, the steel structure is beneficial to improving the overall strength of the liquid storage pipe 11, and the field filling operation can be realized even in a crack-causing hole with cracks. In the embodiment, the liquid storage pipe 11 is a thin-wall piece to reduce the weight, and meanwhile, the liquid storage pipe can be designed to be filled only under the support of the cracking hole, so that the safety performance in the use process is improved,
in the present embodiment, the entire reservoir pipe 11 has a hollow cylindrical shape. In this design, the hollow structure facilitates the formation of the gas-containing space. The cylindrical structure is beneficial to manufacturing on one hand and is convenient to adapt to the cylindrical cracking hole on the other hand.
In the embodiment, the air inlet pipe 12 is made of a metal material, and the air inlet pipe 12 is fixedly connected with the liquid storage pipe 11 in a welding manner; the air outlet pipe 13 is made of metal material, and the air outlet pipe 13 is fixedly connected with the liquid storage pipe 11 in a welding mode. In the design, the preferable scheme is as follows: the material of the air inlet pipe 12 and the material of the air outlet pipe 13 are the same as that of the liquid storage pipe 11, so that the welding effect of the air inlet pipe and the air outlet pipe is improved. It should be noted that the connection between the air inlet pipe 12 and the liquid storage pipe 11 may also be other connection methods, such as fixed connection by welding, or a combination of welding and threaded connection.
In this embodiment, the inlet pipe 12 and the outlet pipe 13 are both hollow cylinders, and the inlet pipe 12, the reservoir pipe 11, and the outlet pipe 13 are coaxially disposed. The design can ensure smooth air inlet and outlet when the air is filled. The outer diameters of the air inlet pipe 12 and the air outlet pipe 13 are 1/12-1/6 times of the outer diameter of the liquid storage pipe 11, and the design is favorable for improving the stability of the structure, and simultaneously reduces the difficulty of gas packaging and improves the packaging effect. On the other hand, the sizes of the inlet pipe 12 and the outlet pipe 13 are adapted to the installation size of the check valve 2.
Referring to fig. 1, the number of the fracturing pipes 1 is two, and the check valve 2 is one. Thus, a series-type fracturing device with two fracturing pipes 1 connected in series can be formed. As another embodiment of the present application, please refer to fig. 2, the number of the fracturing pipes 1 is four, and the number of the check valves 2 is three. Thus, four series-connected fracturing devices with the fracturing pipes 1 connected in series can be formed. In this application, the number of the fracturing tubes 1 is n, wherein: n is a natural number and is more than or equal to 3, the number of the one-way valves 2 is n-1, and the plurality of the one-way valves 2 are all arranged in the same direction. During the specific use, can be different according to the field situation, the string goes into the fracturing pipe 1 of different quantity, forms different overall length to the fracturing hole that adapts to the different degree of depth satisfies the user demand.
It should be noted that, according to different working conditions, the fracturing pipe 1 can also be made of plastic materials.
Compared with the prior art, the tandem type fracturing device has the advantages that the plurality of fracturing pipes are connected in series through the check valve, so that the overall length of the tandem type fracturing device can be prolonged, different numbers of fracturing pipes can be connected in series according to different field conditions to form different overall lengths, the tandem type fracturing device is suitable for fracturing holes with different depths, different length specifications can be flexibly assembled, and the use requirements can be met; the standardization of products is facilitated and the overall equipment cost is reduced. The inflation component inflates air to the liquid storage pipes which are connected in series downwards, the one-way valve is used for realizing inflation and packaging, and the technical problem of inflation and packaging of the plurality of cracking pipes which are connected in series is solved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. A serial cracking device is characterized by comprising a plurality of cracking tubes which are connected in series in a straight line shape, wherein a one-way valve for filling gas and packaging the gas is arranged between two adjacent cracking tubes; the cracking tubes comprise liquid storage tubes with closed gas containing spaces, gas inlet tubes and gas outlet tubes, the gas inlet tubes and the gas outlet tubes are respectively arranged at two ends of the liquid storage tubes and are communicated with the gas containing spaces, and the gas outlet tube of each cracking tube is communicated with the gas inlet tube of the adjacent cracking tube after passing through the one-way valve.
2. The in-line fracker of claim 1, wherein the reservoir comprises an annular tube body, a bottom seal and a top seal disposed at each end of the tube body; the bottom sealing piece and the pipe main body and the top sealing piece and the pipe main body are fixedly connected in a sealing manner, and the gas accommodating space is enclosed by the pipe main body, the bottom sealing piece and the top sealing piece.
3. The in-line frac of claim 2 wherein said reservoir is made of steel; and a sealing, fixing and connecting structure is formed between the bottom sealing piece and the pipe main body and between the top sealing piece and the pipe main body in a welding mode.
4. The in-line frac apparatus of claim 3 wherein said reservoir is generally hollow cylindrical.
5. The in-line fracturing device of claim 4, wherein the gas inlet pipe is made of a metal material and is fixedly connected with the liquid storage pipe by welding and/or screwing; the air outlet pipe is made of metal materials, and the air outlet pipe is fixedly connected with the liquid storage pipe in a welding mode and/or a threaded connection mode.
6. The series type fracturing device of claim 5, wherein the gas inlet pipe and the gas outlet pipe are both hollow cylinders, and the gas inlet pipe, the liquid storage pipe and the gas outlet pipe are coaxially arranged.
7. The in-line fracker of claim 6, wherein the outside diameter of said inlet pipe and the outside diameter of said outlet pipe are each between 1/12-1/6 times the outside diameter of said reservoir pipe.
8. The in-line frac of any one of claims 1-7, wherein the number of frac tubes is two and the one-way valve is one; or the number of the cracking tubes is n, wherein: n is a natural number and is more than or equal to 3, the number of the one-way valves is n-1, and the one-way valves are all arranged in the same direction.
9. The in-line frac of claim 1, wherein the frac tube is made of a plastic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910076699.2A CN111486753A (en) | 2019-01-26 | 2019-01-26 | Tandem type fracturing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910076699.2A CN111486753A (en) | 2019-01-26 | 2019-01-26 | Tandem type fracturing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111486753A true CN111486753A (en) | 2020-08-04 |
Family
ID=71791288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910076699.2A Pending CN111486753A (en) | 2019-01-26 | 2019-01-26 | Tandem type fracturing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111486753A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111829398A (en) * | 2020-08-14 | 2020-10-27 | 葛洲坝易普力(湖南)科技有限公司 | Combinable fracturing pipe, operation method of combinable fracturing pipe and blasting assembly |
| CN113090240A (en) * | 2021-04-27 | 2021-07-09 | 河南理工大学 | Liquid CO of oil and gas well2Leaching and fracturing reservoir transformation integrated equipment |
| CN113390298A (en) * | 2021-06-10 | 2021-09-14 | 河南理工大学 | CO (carbon monoxide)2Series circuit connecting device of fracturing device |
| CN115077317A (en) * | 2022-07-26 | 2022-09-20 | 中国矿业大学 | Flexible carbon dioxide phase change blasting cracking device and using method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040140656A1 (en) * | 2002-11-15 | 2004-07-22 | Blackburn Jeffery S. | Projectile firing barrel |
| CN107461195A (en) * | 2017-09-29 | 2017-12-12 | 段新峰 | Explosion gas fracturing pipe and the blasting method using gas fracturing pipe |
| CN207585444U (en) * | 2017-11-13 | 2018-07-06 | 河北石探机械制造有限责任公司 | Carbon dioxide fracturing device |
| CN209672956U (en) * | 2019-01-26 | 2019-11-22 | 方莹 | A kind of tandem fracturing device |
-
2019
- 2019-01-26 CN CN201910076699.2A patent/CN111486753A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040140656A1 (en) * | 2002-11-15 | 2004-07-22 | Blackburn Jeffery S. | Projectile firing barrel |
| CN107461195A (en) * | 2017-09-29 | 2017-12-12 | 段新峰 | Explosion gas fracturing pipe and the blasting method using gas fracturing pipe |
| CN207585444U (en) * | 2017-11-13 | 2018-07-06 | 河北石探机械制造有限责任公司 | Carbon dioxide fracturing device |
| CN209672956U (en) * | 2019-01-26 | 2019-11-22 | 方莹 | A kind of tandem fracturing device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111829398A (en) * | 2020-08-14 | 2020-10-27 | 葛洲坝易普力(湖南)科技有限公司 | Combinable fracturing pipe, operation method of combinable fracturing pipe and blasting assembly |
| CN113090240A (en) * | 2021-04-27 | 2021-07-09 | 河南理工大学 | Liquid CO of oil and gas well2Leaching and fracturing reservoir transformation integrated equipment |
| CN113390298A (en) * | 2021-06-10 | 2021-09-14 | 河南理工大学 | CO (carbon monoxide)2Series circuit connecting device of fracturing device |
| CN115077317A (en) * | 2022-07-26 | 2022-09-20 | 中国矿业大学 | Flexible carbon dioxide phase change blasting cracking device and using method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111486753A (en) | Tandem type fracturing device | |
| CN202229886U (en) | Pressure test device for heat exchange tubes | |
| CN104060965A (en) | Adjustable annular double-layer air bag hole sealing device and method for performing hole sealing | |
| CN105333302A (en) | Manufacturing method of wounded composite shell of high-capacity high-pressure hydrogen storage container | |
| CN202187725U (en) | Continuous thermal insulation oil tube | |
| CN209672956U (en) | A kind of tandem fracturing device | |
| CN201024947Y (en) | Hydraulic pressure bushing rectifier | |
| CN111608632A (en) | Device and method for realizing carbon dioxide continuous pulse impact fracturing and application | |
| CN202391370U (en) | High temperature resistant expansion tubular column for oil drilling | |
| CN115077317B (en) | Flexible carbon dioxide phase-change blasting fracturing device and application method thereof | |
| CN209130320U (en) | A kind of anti-high-pressure natural gas transport pipeline | |
| CN204476725U (en) | Oil field plunger pump outlet pipe end damping device | |
| CN108302279B (en) | Temporary emergency pipeline quick plugging equipment and construction method thereof | |
| CN203623092U (en) | Hydraulic lining device for inner wall of metal composite tube | |
| CN111006560A (en) | Filling device, filling structure and deep hole fracturing method | |
| CN212272154U (en) | Device for realizing carbon dioxide continuous pulsation impact fracturing | |
| CN106837245A (en) | For the accumulator and its application method of underground work | |
| CN202823996U (en) | Bulk material sweeping injection cleaning device | |
| CN116351967A (en) | Wolf tooth stick type expansion joint device | |
| CN203979890U (en) | A kind of crude oil pipeline system | |
| CN101823590A (en) | Steel pipe packaging support and packaging method thereof | |
| CN215804540U (en) | Hole filled expansion cracking tube and tube head structure thereof | |
| CN207364262U (en) | A kind of quick blocking high pressure sealing air bag | |
| CN214027193U (en) | Butt joint air bag device for large-diameter glass fiber reinforced plastic gas transmission pipeline | |
| CN202366909U (en) | Device for reducing air blowing noise generated by dust blowing and sucking device for steel pipe |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20230406 Address after: 516083 No. 23, Shihua Avenue West, Xiangshui River, Daya Bay West District, Huizhou City, Guangdong Province (Research Building) Applicant after: Hunan Kaili Electromechanical Equipment Co.,Ltd. Huizhou Branch Address before: 518114 Floor 2, Zone C, Qianjiang Art Center, Nanwan Street, Longgang District, Shenzhen City, Guangdong Province Applicant before: Fang Ying |
|
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20230609 Address after: B902, Building 2, Shenzhen Bay Science and Technology Ecological Park, No. 1809 Shahe West Road, High tech Zone Community, Yuehai Street, Shenzhen City, Guangdong Province, 518063 Applicant after: Guangdong Hongkai Gas Energy Technology Co.,Ltd. Address before: 516083 No. 23, Shihua Avenue West, Xiangshui River, Daya Bay West District, Huizhou City, Guangdong Province (Research Building) Applicant before: Hunan Kaili Electromechanical Equipment Co.,Ltd. Huizhou Branch |
|
| TA01 | Transfer of patent application right |