CN111692530B - Natural gas pressure regulating skid-mounted device with multistage safety protection function - Google Patents
Natural gas pressure regulating skid-mounted device with multistage safety protection function Download PDFInfo
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- CN111692530B CN111692530B CN202010422933.5A CN202010422933A CN111692530B CN 111692530 B CN111692530 B CN 111692530B CN 202010422933 A CN202010422933 A CN 202010422933A CN 111692530 B CN111692530 B CN 111692530B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/02—Pipe-line systems for gases or vapours
- F17D1/04—Pipe-line systems for gases or vapours for distribution of gas
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/005—Protection or supervision of installations of gas pipelines, e.g. alarm
Abstract
The invention relates to the technical field of natural gas pressure regulation, in particular to a natural gas pressure regulating skid-mounted device with a multi-stage safety protection function, which comprises a base, wherein a vaporizer is fixed at one end of the base, a control device is also fixed near the side edge of the vaporizer, the upper part of one side of the vaporizer, which is far away from the end head of the base, is connected with a main pipeline device, the main pipeline device comprises a main gas pipe and a first pressure guide pipe, one end of the first pressure guide pipe, which is far away from the main gas pipe, is connected with a pressure guide collecting box, the first pressure guide pipe, which is positioned between the main gas pipe and the pressure guide collecting box, is provided with a first safety cut-off valve, a first pressure regulating valve is fixed on the main gas pipe, which is positioned between a second connecting plate and the first pressure guide pipe, a first pressure sensor a and a first pressure sensor b are respectively arranged on the main gas pipe, which is far away from the vaporizer, is connected with a plurality of stage branch pipeline devices, and the control device is also installed near the side edge of the vaporizer, through setting up pressure sensor and controlling means, can realize real-time carrying out pressure monitoring to different pipelines.
Description
Technical Field
The invention relates to the technical field of natural gas pressure regulation, in particular to a skid-mounted natural gas pressure regulating device with a multistage safety protection function.
Background
Natural gas pressure regulating sled controlling means is applied to the natural gas pressure regulating sled equipment under operating condition, and natural gas pressure regulating sled equipment mainly carries out the pressure regulating operation to the natural gas transportation in-process, and the pressure when avoiding the natural gas to be in the pipeline inboard is unstable, causes the inside molecule of natural gas to have abnormal phenomena to influence its subsequent performance, and this just needs to set up safety arrangement.
Through retrieval, chinese patent No. CN206973268U discloses a natural gas pressure regulating skid-mounted device with multistage safety protection function, including sled seat, locate vapour and liquid separator and many pipelines on sled seat, many pipelines include air inlet pipe way, step-down pipeline, first output branch, second output branch and the main pipeline of emptying. A first emptying pipeline is arranged between the emergency cut-off valve and the first pressure regulating valve, and emergency emptying is carried out through a first safety valve when the line is in overpressure; a second emptying pipeline is arranged between the first gate valve and the gas-liquid separator, and emergency emptying is carried out through a second safety valve when the line is in overpressure; before entering a downstream air port, a manual emptying is arranged, when the line is over-pressurized, a gate valve and a stop valve are opened for emptying, and the following problems still exist in the using process: the structure is complicated, needs manual unloading during the pressure regulating moreover, and the gaseous direct discharge of unloading is unfavorable for the cyclic utilization of the energy, and can not in time prejudge the position that has the problem, and the safety protection function is lower.
Disclosure of Invention
The invention aims to provide a natural gas pressure regulating skid-mounted device with a multistage safety protection function, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a natural gas pressure regulating skid-mounted device with a multistage safety protection function comprises a base, wherein a vaporizer is fixedly mounted at one end of the base, the upper part of one side, away from the end of the base, of the vaporizer is fixedly connected with a main pipeline device through a second connecting plate, the main pipeline device comprises a main gas pipe and a first pressure pipe, one end of the first pressure pipe is connected with the main gas pipe, one end, away from the main gas pipe, of the first pressure pipe is connected with a pressure guide collecting box, the first pressure pipe, located between the main gas pipe and the pressure guide collecting box, is provided with a first safety stop valve, a first pressure regulating valve is fixedly mounted on the main gas pipe, located between the second connecting plate and the first pressure pipe, the main gas pipes, located at two sides of the first pressure regulating valve, are respectively and fixedly provided with a first pressure sensor a and a first pressure sensor b, one end, away from the vaporizer, of the main gas pipe is connected with a plurality of one-stage branch pipeline devices, and the main gas pipe, located between the first pressure pipe and the one-stage branch pipeline devices, is provided with a second safety stop valve, and a control device is fixedly arranged near the side edge of the vaporizer.
As a further scheme of the invention: the control device comprises a display screen and a keyboard input device, the keyboard input device is positioned below the display screen, the control device is positioned at the lower part of the keyboard input device and is provided with a master control module, and the control device is positioned at the upper part of the display screen and is provided with a voice alarm and an alarm indicator lamp.
As a further scheme of the invention: the one-level branch pipe way device comprises a one-level branch pipe and a second pressure guide pipe, one end of the second pressure guide pipe is connected with the one-level branch pipe, one end of the one-level branch pipe, which is far away from the second pressure guide pipe, is connected with a pressure guide connecting pipe and a pressure guide collecting box to form a passage, and is positioned between the one-level branch pipe and the pressure guide connecting pipe, the second pressure guide pipe is provided with a third safety cut-off valve, and is positioned between the second safety cut-off valve and the second pressure guide pipe, the one-level branch pipe is fixedly provided with a second pressure regulating valve and positioned on two sides of the second pressure regulating valve, the one-level branch pipe is respectively fixedly provided with a second pressure sensor a and a second pressure sensor b, and one end of the main pipe, which is far away from the one-level branch pipe, is connected with a plurality of second-level branch pipe way devices.
As a further scheme of the invention: the second grade branch pipe way device includes second grade bronchus and third pressure tube, and third pressure tube one end is connected with the second grade bronchus, and second grade bronchus one end is kept away from to the third pressure tube and is pressed connecting pipe and pressure introduction collecting box formation route through connecting, is located between second grade bronchus and the pressure introduction connecting pipe the third pressure tube is equipped with safety trip valve five, the second grade bronchus is close to one-level bronchus fixed mounting and has safety trip valve four, is located between safety trip valve four and the third pressure tube second grade bronchus fixed mounting has the third air-vent valve, is located the third air-vent valve both sides the second grade bronchus is fixed mounting respectively has third pressure sensor an and third pressure sensor b, the second grade bronchus is kept away from one-level branch pipe way device one end and is connected with the gas delivery outlet.
As a further scheme of the invention: the upper part of one side of the vaporizer close to the end of the base is connected with an air inlet pipe through a first connecting plate.
As a further scheme of the invention: and a pressure-guiding exhaust pipe is connected between the air inlet pipe and the pressure-guiding collecting box.
As a further scheme of the invention: and a standby pipeline device is fixedly arranged at the top of the vaporizer.
As a still further scheme of the invention: and one end of the standby pipeline device, which is far away from the vaporizer, is connected with the primary branch pipeline device.
Compared with the prior art, the invention has the beneficial effects that: through setting up main pipe device, one-level branch pipe device and second grade branch pipe device, can realize hierarchical safety protection to pressure regulating sled device, through setting up many places pressure sensor and controlling means, can realize real-time carrying out pressure monitoring to different pipelines, in case the problem can start reserve pipeline, through setting up audio alert ware and alarm indicator lamp, can in time remind the staff to maintain the problem position simultaneously.
Drawings
Fig. 1 is a schematic structural diagram of a natural gas pressure regulating skid-mounted device with a multistage safety protection function.
Fig. 2 is a schematic top view of a natural gas pressure regulating skid-mounted device with multi-stage safety protection.
Fig. 3 is a schematic structural diagram of a main pipeline device, a primary pipeline device, and a secondary pipeline device in a natural gas pressure regulating skid device with a multi-stage safety protection function.
Fig. 4 is a schematic structural diagram of a control device in a natural gas pressure regulating skid-mounted device with a multi-stage safety protection function.
Fig. 5 is a schematic control flow structure diagram of a natural gas pressure regulating skid-mounted device with a multi-stage safety protection function.
In the figure: 1-base, 2-carburetor, 3-control device, 301-main control module, 302-keyboard input device, 303-display screen, 304-voice alarm, 305-alarm indicator lamp, 4-first connecting plate, 401-air inlet pipe, 402-pressure leading exhaust pipe, 5-main pipeline device, 501-second connecting plate, 502-main air pipe, 503-first pressure regulating valve, 504-first pressure sensor a, 505-first pressure sensor b, 506-first pressure leading pipe, 507-safety cut-off valve one, 508-safety cut-off valve two, 6-standby pipeline device, 7-pressure leading collecting box, 8-first-level branch pipeline device, 801-first-level branch air pipe, 802-second pressure regulating valve, 803-second pressure sensor a, 804-a second pressure sensor b, 805-a second pressure guide pipe, 806-a safety shut-off valve three, 9-a second-stage branch pipe device, 901-a second-stage branch pipe, 902-a safety shut-off valve four, 903-a third pressure regulating valve, 904-a third pressure sensor a, 905-a third pressure sensor b, 906-a third pressure guide pipe, 907-a safety shut-off valve five, 10-a pressure guide connecting pipe and 11-an air output port.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
Example one
Referring to fig. 1-5, the present invention includes a base 1, a vaporizer 2 is fixedly installed at one end of the base 1, and an air inlet pipe 401 is connected to the upper portion of one side of the vaporizer 2 close to the end of the base 1 through a first connection plate 4; a pressure-guiding exhaust pipe 402 is connected between the air inlet pipe 401 and the pressure-guiding collection box 7; the upper part of one side of the end of the carburetor 2, which is far away from the base 1, is fixedly connected with a main pipeline device 5 through a second connecting plate 501, the main pipeline device 5 comprises a main air pipe 502 and a first pressure guide pipe 506, one end of the first pressure guide pipe 506 is connected with the main air pipe 502, one end of the first pressure guide pipe 506, which is far away from the main air pipe 502, is connected with a pressure guide collecting box 7, the first pressure guide pipe 506, which is positioned between the main air pipe 502 and the pressure guide collecting box 7, is provided with a safety cut-off valve I507, the main air pipe 502, which is positioned between the second connecting plate 501 and the first pressure guide pipe 506, is fixedly provided with a first pressure regulating valve 503, the main air pipes 502, which are positioned at two sides of the first pressure regulating valve 503, are respectively and fixedly provided with a first pressure sensor A504 and a first pressure sensor B505, one end of the main air pipe 502, which is far away from the carburetor 2, is connected with a plurality of primary branch pipeline devices 8, and the main air pipe 502, is provided with a safety cut-off valve 508, the primary branch pipeline device 8 comprises a primary branch pipeline 801 and a second pressure guiding pipe 805, one end of the second pressure guiding pipe 805 is connected with the primary branch pipeline 801, one end, far away from the primary branch pipeline 801, of the second pressure guiding pipe 805 is connected with a pressure guiding connecting pipe 10 to form a passage with a pressure guiding collecting box 7, the second pressure guiding pipe 805, located between the primary branch pipeline 801 and the pressure guiding connecting pipe 10, is provided with a third safety cut-off valve 806, the primary branch pipeline 801, located between the second safety cut-off valve 508 and the second pressure guiding pipe 805, is fixedly provided with a second pressure regulating valve 802, the primary branch pipelines 801, located on two sides of the second pressure regulating valve 802, are respectively and fixedly provided with a second pressure sensor a803 and a second pressure sensor b804, and one end, far away from the main pipeline 502, of the primary branch pipeline 801 is connected with a plurality of secondary branch pipeline devices 9; the second-stage branch pipeline device 9 comprises a second-stage branch pipeline 901 and a third pressure guiding pipe 906, one end of the third pressure guiding pipe 906 is connected with the second-stage branch pipeline 901, one end, far away from the second-stage branch pipeline 901, of the third pressure guiding pipe 906 is connected with a pressure guiding collecting box 7 through a pressure guiding connecting pipe 10 to form a passage, a safety shut-off valve five 907 is arranged on the third pressure guiding pipe 906 between the second-stage branch pipeline 901 and the pressure guiding connecting pipe 10, a safety shut-off valve four 902 is fixedly arranged on the secondary branch pipe 901 close to the primary branch pipe 801, a third pressure regulating valve 903 is fixedly arranged on the secondary branch pipe 901 between the safety shut-off valve four 902 and a third pressure guiding pipe 906, a third pressure sensor a904 and a third pressure sensor b905 are respectively fixedly arranged on the secondary branch pipe 901 at two sides of the third pressure regulating valve 903, one end of the secondary branch gas pipe 901, which is far away from the primary branch pipeline device 8, is connected with a gas output port; through setting up main pipe installation 5, multistage safety protection function can be realized to one-level branch pipe installation 8 and second grade branch pipe installation 9, can detect main pipe installation 5 pressure regulating front and back pressure through setting up first pressure sensor a504 and first pressure sensor b505, can detect one-level branch pipe installation 8 pressure regulating front and back pressure through setting up second pressure sensor a803 and second pressure sensor b804, can detect second grade branch pipe installation 9 pressure regulating front and back pressure through setting up third pressure sensor a904 and third pressure sensor b905, through setting up the induced pressure collecting box 7, can collect the cyclic utilization that can realize the energy to the gas that the induced pressure came out.
Further, in order to realize an intelligent multi-level safety protection function, a control device 3 is fixedly arranged near the side edge of the vaporizer 2; the control device 3 comprises a display screen 303 and a keyboard input device 302, the keyboard input device 302 is positioned below the display screen 303, a main control module 301 is arranged on the lower portion of the control device 3 positioned below the keyboard input device 302, and a voice alarm 304 and an alarm indicator lamp 305 are arranged on the upper portion of the display screen 303 of the control device 3; through setting up audio alert ware 304 and alarm indicator 305, can in time remind the staff to maintain the problem position, can carry out analysis processes and send the instruction to the information of collecting through setting up host system 301, and then realize intelligent control.
Example two
In another embodiment of the present invention, the difference between this embodiment and the above embodiment is that a spare pipe device 6 is fixedly installed on the top of the vaporizer 2; one end of the standby pipeline device 6, which is far away from the vaporizer 2, is connected with a primary branch pipeline device 8; through setting up reserve pipe-line device 6, can further increase the safety protection function of the device, when main pipe-line device 5 goes wrong, can in time start reserve pipe-line device 6, avoid influencing subsequent use.
The working principle of the invention is as follows:
the multi-stage safety protection function can be realized by arranging the main pipeline device 5, the primary branch pipeline device 8 and the secondary branch pipeline device 9, the pressure before and after the pressure regulation of the main pipeline device 5 can be detected by arranging the first pressure sensor a504 and the first pressure sensor b505, the pressure before and after the pressure regulation of the primary branch pipeline device 8 can be detected by arranging the second pressure sensor a803 and the second pressure sensor b804, the pressure before and after the pressure regulation of the secondary branch pipeline device 9 can be detected by arranging the third pressure sensor a904 and the third pressure sensor b905, the pressure guiding collection box can be arranged to collect the guided gas to realize the recycling of energy, the voice alarm device 304 and the alarm indicator lamp 305 can be arranged to remind the working personnel to maintain problem parts in time, the collected information can be analyzed and processed and sent out instructions by arranging the main control module 301, thereby realizing intelligent control.
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, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (6)
1. A natural gas pressure regulating skid-mounted device with a multistage safety protection function comprises a base (1) and is characterized in that a vaporizer (2) is fixedly mounted at one end of the base (1), the upper portion of one side, far away from the end of the base (1), of the vaporizer (2) is fixedly connected with a main pipeline device (5) through a second connecting plate (501), the main pipeline device (5) comprises a main gas pipe (502) and a first pressure leading pipe (506), one end of the first pressure leading pipe (506) is connected with the main gas pipe (502), one end, far away from the main gas pipe (502), of the first pressure leading pipe (506) is connected with a pressure leading collecting box (7), the first pressure leading pipe (506) between the main gas pipe (502) and the pressure leading collecting box (7) is provided with a safety cut-off valve I (507), and a first pressure regulating valve (503) is fixedly mounted on the main gas pipe (502) between the second connecting plate (501) and the first pressure leading pipe (506), a first pressure sensor a (504) and a first pressure sensor b (505) are respectively fixedly installed on a main air pipe (502) located on two sides of a first pressure regulating valve (503), one end, far away from a vaporizer (2), of the main air pipe (502) is connected with a plurality of primary branch pipeline devices (8), a safety shut-off valve II (508) is arranged on the main air pipe (502) located between a first pressure guiding pipe (506) and the primary branch pipeline devices (8), and a control device (3) is further fixedly installed near the side edge of the vaporizer (2);
the primary branch pipeline device (8) comprises a primary branch pipe (801) and a second pressure guide pipe (805), one end of the second pressure guide pipe (805) is connected with the primary branch pipe (801), one end, far away from the primary branch pipe (801), of the second pressure guide pipe (805) is connected with a pressure guide connecting pipe (10) to form a passage with a pressure guide collecting box (7), a safety shut-off valve III (806) is arranged on the second pressure guide pipe (805) between the primary branch pipe (801) and the pressure guide connecting pipe (10), a second pressure regulating valve (802) is fixedly installed on the primary branch pipe (801) between a safety shut-off valve II (508) and the second pressure guide pipe (805), a second pressure sensor a (803) and a second pressure sensor b (804) are fixedly installed on the primary branch pipe (801) on two sides of the second pressure regulating valve (802) respectively, one end of the primary branch air pipe (801) far away from the main air pipe (502) is connected with a plurality of secondary branch pipeline devices (9);
the secondary branch pipeline device (9) comprises a secondary branch pipeline (901) and a third pressure guide pipe (906), one end of the third pressure guide pipe (906) is connected with the secondary branch pipeline (901), one end, far away from the secondary branch pipeline (901), of the third pressure guide pipe (906) is connected with a pressure guide connecting pipe (10) and a pressure guide collecting box (7) to form a passage, a safety shut-off valve fifth (907) is arranged on the third pressure guide pipe (906) between the secondary branch pipeline (901) and the pressure guide connecting pipe (10), a safety shut-off valve fourth (902) is fixedly installed on the secondary branch pipeline (901) close to the primary branch pipeline (801), a third pressure regulating valve (903) is fixedly installed on the secondary branch pipeline (901) between the safety shut-off valve fourth (902) and the third pressure guide pipe (906), and a third pressure sensor a (904) and a third pressure sensor b (905) are respectively and fixedly installed on the secondary branch pipelines (901) at two sides of the third pressure regulating valve (903), one end of the secondary branch air pipe (901), which is far away from the primary branch pipeline device (8), is connected with an air output port.
2. The natural gas pressure regulating skid-mounted device with the multistage safety protection function as claimed in claim 1, wherein the control device (3) comprises a display screen (303) and a keyboard input device (302), the keyboard input device (302) is located below the display screen (303), a main control module (301) is arranged on the lower portion of the keyboard input device (302) of the control device (3), and a voice alarm (304) and an alarm indicator lamp (305) are arranged on the upper portion of the display screen (303) of the control device (3).
3. The natural gas pressure regulating skid-mounted device with the multistage safety protection function as claimed in claim 2, wherein the upper part of one side of the vaporizer (2) close to the end of the base (1) is connected with an air inlet pipe (401) through a first connecting plate (4).
4. The skid-mounted device for regulating pressure of natural gas with multi-stage safety protection function as claimed in claim 3, wherein a pressure-inducing exhaust pipe (402) is connected between the air inlet pipe (401) and the pressure-inducing collecting box (7).
5. The skid-mounted device for natural gas pressure regulation with multi-stage safety protection function as claimed in claim 1 or 4, wherein a spare pipeline device (6) is fixedly installed on the top of the vaporizer (2).
6. The natural gas pressure regulating skid-mounted device with the multi-stage safety protection function as claimed in claim 5, wherein one end of the spare pipeline device (6) far away from the vaporizer (2) is connected with the primary branch pipeline device (8).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010422933.5A CN111692530B (en) | 2020-05-19 | 2020-05-19 | Natural gas pressure regulating skid-mounted device with multistage safety protection function |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010422933.5A CN111692530B (en) | 2020-05-19 | 2020-05-19 | Natural gas pressure regulating skid-mounted device with multistage safety protection function |
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| CN111692530A CN111692530A (en) | 2020-09-22 |
| CN111692530B true CN111692530B (en) | 2021-09-03 |
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| CN114396568A (en) * | 2021-12-31 | 2022-04-26 | 北京市燃气集团有限责任公司 | Internal-pressure buried pressure regulating device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000283397A (en) * | 1999-03-31 | 2000-10-13 | Osaka Gas Co Ltd | Fluid pressure regulating facility |
| CN202561437U (en) * | 2012-03-30 | 2012-11-28 | 蚌埠高科能源装备有限公司 | Natural gas pressure regulating device |
| CN106382466A (en) * | 2016-12-14 | 2017-02-08 | 中国石油天然气集团公司 | Gas conveying pipeline metering and pressure adjusting device and method |
| CN206617763U (en) * | 2017-01-23 | 2017-11-07 | 森格斯输配设备(宁波)有限公司 | Automate LNG filling decompression units |
-
2020
- 2020-05-19 CN CN202010422933.5A patent/CN111692530B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000283397A (en) * | 1999-03-31 | 2000-10-13 | Osaka Gas Co Ltd | Fluid pressure regulating facility |
| CN202561437U (en) * | 2012-03-30 | 2012-11-28 | 蚌埠高科能源装备有限公司 | Natural gas pressure regulating device |
| CN106382466A (en) * | 2016-12-14 | 2017-02-08 | 中国石油天然气集团公司 | Gas conveying pipeline metering and pressure adjusting device and method |
| CN206617763U (en) * | 2017-01-23 | 2017-11-07 | 森格斯输配设备(宁波)有限公司 | Automate LNG filling decompression units |
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Application publication date: 20200922 Assignee: Jiangsu xinzhiyang New Energy Technology Co.,Ltd. Assignor: XUZHOU HUABAO ENERGY TECHNOLOGY Co.,Ltd. Contract record no.: X2022980000068 Denomination of invention: A natural gas pressure regulating skid mounted device with multi-level safety protection function Granted publication date: 20210903 License type: Exclusive License Record date: 20220111 |
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