CN113653944A - Natural gas flow control system - Google Patents
Natural gas flow control system Download PDFInfo
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- CN113653944A CN113653944A CN202110941574.9A CN202110941574A CN113653944A CN 113653944 A CN113653944 A CN 113653944A CN 202110941574 A CN202110941574 A CN 202110941574A CN 113653944 A CN113653944 A CN 113653944A
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- gas
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- control system
- natural gas
- sealing
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 66
- 239000003345 natural gas Substances 0.000 title claims abstract description 33
- 239000007789 gas Substances 0.000 claims abstract description 123
- 238000006243 chemical reaction Methods 0.000 claims abstract description 13
- 239000000523 sample Substances 0.000 claims abstract description 11
- 230000005540 biological transmission Effects 0.000 claims description 34
- 238000007789 sealing Methods 0.000 claims description 29
- 238000009434 installation Methods 0.000 claims description 13
- 238000001514 detection method Methods 0.000 claims description 11
- 230000017525 heat dissipation Effects 0.000 claims description 11
- 238000005192 partition Methods 0.000 claims description 8
- 238000009530 blood pressure measurement Methods 0.000 claims description 6
- 238000012423 maintenance Methods 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 abstract description 5
- 230000001502 supplementing effect Effects 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
Images
Classifications
-
- 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
-
- 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
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Pipeline Systems (AREA)
Abstract
The invention discloses a natural gas flow control system, relates to the technical field of natural gas transportation, and solves the problems that the range of a flow meter is selected according to the total flow of all gas consumption points when the existing supporting project is installed, and when only a single gas consumption point is used, the flow meter is not used for metering because the single gas consumption flow cannot reach the initial flow of the flow meter, so that a gas enterprise suffers loss and the like. The utility model provides a natural gas flow control system, includes flowmeter, ball valve, solenoid valve, combustible gas alarm control box, combustible gas alarm probe, pressure control mechanism, gas appliances and signal conversion module, flowmeter, signal conversion module, solenoid valve, combustible gas alarm control box, combustible gas alarm probe and pressure control mechanism are all through electric connection. The invention effectively ensures the stability of the natural gas delivery flow by automatically supplementing gas to the gas delivery pipeline, thereby improving the flow monitoring precision and reducing the metering loss.
Description
Technical Field
The invention relates to the technical field of natural gas transportation, in particular to a natural gas flow control system.
Background
With the rapid development of social economy, the wide adoption of gas consumption of residential users and non-residential users such as floor heating, energy-saving cooking utensils, heat preservation and energy conservation processes, district centralized matching and the like has certain influence on the metering of gas companies, a design unit is difficult to ensure the accuracy of multiple total metering (especially large load comparison) according to a traditional design mode (cost-saving centralized metering), and a local time flow meter is often operated below the initial flow rate, so that the metering loss is generated, and accurate flow rate detection and control are required.
However, the range of the flow meter is selected according to the total flow of each gas consumption point when the existing supporting project is installed, and when only a single gas consumption point is used, the flow meter is not measured due to the fact that the single gas consumption flow cannot reach the initial flow of the flow meter, so that a gas enterprise suffers loss; thus, the existing needs are not met, and a natural gas flow control system is proposed.
Disclosure of Invention
The invention aims to provide a natural gas flow control system, which aims to solve the problems that the range of a flow meter is selected according to the sum flow of each gas consumption point when the existing supporting engineering is installed, and when only a single gas consumption point is used, the flow meter is not used for metering because the single gas consumption flow cannot reach the starting flow of the flow meter, so that a gas enterprise suffers loss and the like.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a natural gas flow control system, includes flowmeter, ball valve, solenoid valve, combustible gas alarm control case, combustible gas alarm probe, pressure control mechanism, gas appliances and signal conversion module, flowmeter, signal conversion module, solenoid valve, combustible gas alarm control case, combustible gas alarm probe and pressure control mechanism all pass through electric connection, the flowmeter passes through the ball valve with the solenoid valve and is connected, the solenoid valve passes through the pipe connection with the gas appliances, combustible gas alarm probe sets up the inner wall at the pipeline.
Preferably, ball valves are arranged at two ends of the flow meter, and the flow meter is connected with the electromagnetic valve through a signal conversion module.
Preferably, pressure control mechanism includes pressure measurement mechanism and solenoid valve body, pressure measurement mechanism is including connecting snap ring, supporting foot rest, sealed box body, honeycomb duct, heating panel, wire main part, pressure switch main part, seal baffle and battery piece, the equal fixed mounting in both ends of sealed box body has the supporting foot rest, the connection snap ring is installed to the bottom of supporting foot rest, the mid-mounting of terminal surface has the honeycomb duct under the sealed box body, the pressure switch main part is installed to the inboard of sealed box body, the up end of pressure switch main part is provided with the wire main part, the heating panel is installed in the outside of wire main part, the battery piece is installed to one side of heating panel, seal baffle is installed to the up end of battery piece.
Preferably, a gas transmission pipeline is installed on the inner side of the bottom end of the pressure detection mechanism, an electromagnetic valve body is installed at one end of the gas transmission pipeline, a gas distribution mechanism is installed at the other end of the gas transmission pipeline, a sealing seat is arranged on the upper end face of the electromagnetic valve body, an input pipe is arranged at one end of the electromagnetic valve body, and the electromagnetic valve body is connected with the pressure detection mechanism through a wire installation pipe.
Preferably, with gas reposition of redundant personnel mechanism including with gas tank, branch flow box, output tube, access panel, fan case, spliced pole and protection casing, the spliced pole is installed to the inboard at protection casing middle part, the gas tank is installed in the outside of spliced pole bottom, evenly install four fan cases with the up end of gas tank, the inboard fixed mounting of using the gas tank has branch flow box, seven output tubes are all installed to the both sides of branch flow box, install the access panel with one side of gas tank.
Preferably, both ends of the electromagnetic valve body are connected with the gas transmission pipeline and the input pipe through threads, and both ends of the electromagnetic valve body are provided with sealing rings on the inner sides of the gas transmission pipeline and the input pipe.
Preferably, the upper end face of the electromagnetic valve body is fixedly connected with the sealing seat through a screw, one end of the wire installation pipe penetrates through the sealing seat and is connected with the electromagnetic valve body through threads, and a wire is arranged on the inner side of the wire installation pipe.
Preferably, the wire installation pipe penetrates through the sealing partition plate and is connected with the battery block through a wire, the heat dissipation plate is fixedly connected with the sealing box body through a screw, the battery block is connected with the pressure switch main body through a wire main body, and the bottom end of the pressure switch main body is connected with the gas transmission pipeline through a flow guide pipe.
Preferably, both ends of the sealing box body and the supporting foot frames are welded and fixed, the bottom ends of the supporting foot frames and both ends of the connecting clamping ring are connected and fixed through screws, and the bottom end of the flow guide pipe is connected with the gas transmission pipeline through threads.
Preferably, the one end of output tube is run through the access panel and is passed through the sealing ring and be connected with the flow distribution box, flow distribution box and with case welded fastening, the inboard of output tube is provided with the flow valve.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, the flowmeter is arranged on the inner side of the input pipe, when the gas consumption on the inner side of the output pipe does not reach the initial flow of the flowmeter, the flowmeter is in a stop state and does not output a pulse signal, the electromagnetic valve body automatically closes and stops gas supply operation on the gas transmission pipeline, and at the moment, the natural gas output by the output pipe is the residual quantity on the inner side of the gas transmission pipeline;
2. according to the invention, when the pressure of the residual natural gas on the inner side of the gas transmission pipeline is lower than the set pressure, the electromagnetic valve body is opened and gas is supplied to the inner side of the gas transmission pipeline, the gas supply amount can meet the minimum operation of the flowmeter, so that the display numerical value of the flowmeter is changed, the electromagnetic valve body is automatically closed after the gas supply is completed, and through the cyclic reciprocating construction period, the flowmeter can accurately perform metering operation under the condition of small flow, and the metering loss is reduced.
Drawings
FIG. 1 is a schematic diagram of an overall control system of the present invention;
FIG. 2 is a schematic view of the pressure control mechanism of the present invention;
FIG. 3 is a partial schematic view of the pressure detection mechanism of the present invention;
FIG. 4 is a schematic view of a partial cross-sectional structure of the pressure detecting mechanism of the present invention;
FIG. 5 is a schematic view of a partial cross-sectional structure of the gas distribution mechanism of the present invention;
FIG. 6 is a schematic view of a partial cross-sectional structure of the gas tank for use in the present invention.
In the figure: 1. a gas pipeline; 2. an input tube; 3. an electromagnetic valve body; 4. a sealing seat; 5. a wire mounting tube; 6. a pressure detection mechanism; 601. connecting a snap ring; 602. a supporting foot rest; 603. sealing the box body; 604. a flow guide pipe; 605. a heat dissipation plate; 606. a lead body; 607. a pressure switch body; 608. sealing the partition plate; 609. a battery block; 7. a gas distribution mechanism; 701. using a gas tank; 702. a shunt box; 703. an output pipe; 704. an access panel; 705. a fan case; 706. connecting columns; 707. a shield.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1 to 6, an embodiment of the present invention includes: the utility model provides a natural gas flow control system, including the flowmeter, the ball valve, the solenoid valve, combustible gas alarm control case, combustible gas alarm probe, pressure control mechanism, gas appliances and signal conversion module, the flowmeter, signal conversion module, the solenoid valve, combustible gas alarm control case, combustible gas alarm probe and pressure control mechanism all pass through electric connection, the flowmeter passes through the ball valve with the solenoid valve and is connected, the solenoid valve passes through the pipe connection with gas appliances, combustible gas alarm probe sets up the inner wall at the pipeline, wholly through carrying out automatic air supply to gas transmission pipeline, effectively guarantee the stability of natural gas delivery flow, and then improve the flow monitoring precision, reduce the measurement loss.
Further, the both ends of flowmeter all are provided with the ball valve, and the flowmeter passes through signal conversion module with the solenoid valve to be connected for the solenoid valve can carry out the switching to the flowmeter through signal conversion module.
Further, the pressure control mechanism comprises a pressure detection mechanism 6 and an electromagnetic valve body 3, the pressure detection mechanism 6 comprises a connecting snap ring 601, a support foot rest 602, a sealed box body 603, a flow guide pipe 604, a heat dissipation plate 605, a lead main body 606, a pressure switch main body 607, a seal partition plate 608 and a battery block 609, the support foot rest 602 is fixedly installed at both ends of the sealed box body 603, the connecting snap ring 601 is installed at the bottom end of the support foot rest 602, the flow guide pipe 604 is installed at the middle part of the lower end surface of the sealed box body 603, the pressure switch main body 607 is installed at the inner side of the sealed box body 603, the lead main body 606 is arranged at the upper end surface of the pressure switch main body 607, the heat dissipation plate 605 is installed at the outer side of the lead main body 606, the battery block 609 is installed at one side of the heat dissipation plate 605, the seal partition plate 608 is installed at the upper end surface of the battery block 609, the pressure detection mechanism 6 is convenient for monitoring the gas pressure inside the gas transmission pipeline 1 in real time.
Further, gas transmission pipeline 1 is installed to the inboard of pressure measurement mechanism 6 bottom, solenoid valve body 3 is installed to the one end of gas transmission pipeline 1, and gas shunt mechanism 7 is installed with gas to the other end of gas transmission pipeline 1, and solenoid valve body 3's up end is provided with seal receptacle 4, and solenoid valve body 3's one end is provided with input tube 2, and solenoid valve body 3 passes through wire installation pipe 5 with pressure measurement mechanism 6 and is connected, is convenient for transmit gas pressure data through wire installation pipe 5.
Further, with gas reposition of redundant personnel mechanism 7 including with gas tank 701, reposition of redundant personnel box 702, output tube 703, maintenance board 704, fan box 705, spliced pole 706 and protection casing 707, spliced pole 706 is installed to the inboard at protection casing 707 middle part, gas tank 701 is installed to the outside of spliced pole 706 bottom, evenly install four fan boxes 705 with the up end of gas tank 701, there is reposition of redundant personnel box 702 with inboard fixed mounting of gas tank 701, seven output tubes 703 are all installed to the both sides of reposition of redundant personnel box 702, maintenance board 704 is installed to one side with gas tank 701, it protects to carry out the reposition of redundant personnel box to the gas transmission terminal to be convenient for with gas reposition of redundant personnel mechanism 7.
Further, the both ends of solenoid valve body 3 all pass through threaded connection with gas transmission pipeline 1 and input tube 2, and the both ends of solenoid valve body 3 all are provided with the sealing washer with the inboard of gas transmission pipeline 1 and input tube 2 for seal through the both ends to solenoid valve body 3, improve the stability of carrying.
Further, the up end of solenoid valve body 3 passes through the screw connection with seal receptacle 4 fixedly, and the one end of wire installation pipe 5 runs through seal receptacle 4 and is connected with solenoid valve body 3 through the screw thread, and the inboard of wire installation pipe 5 is provided with the wire, is convenient for carry out fixed mounting to wire installation pipe 5 through seal receptacle 4.
Further, the lead mounting tube 5 penetrates through the sealing partition 608 and is connected with the battery block 609 through a lead, the heat dissipation plate 605 is fixedly connected with the sealing box body 603 through screws, the battery block 609 is connected with the pressure switch main body 607 through the lead main body 606, the bottom end of the pressure switch main body 607 is connected with the gas transmission pipeline 1 through the flow guide tube 604, and the pressure switch main body 607 is protected through the heat dissipation plate 605.
Further, both ends of the sealing box 603 and the supporting foot rest 602 are welded and fixed, the bottom end of the supporting foot rest 602 and both ends of the connecting clamp ring 601 are connected and fixed through screws, and the bottom end of the flow guide pipe 604 is connected with the gas transmission pipeline 1 through threads, so that the pressure switch main body 607 is convenient for monitoring the gas transmission pipeline 1 through the flow guide pipe 604.
Further, one end of the output pipe 703 penetrates through the overhaul board 704 and is connected with the shunt box 702 through a sealing ring, the shunt box 702 is welded and fixed with the air box 701, and the inner side of the output pipe 703 is provided with a flow valve, so that natural gas can be shunted and flow regulation can be facilitated through the output pipe 703.
The working principle is as follows: when the natural gas pipeline is used, whether the functions of all parts are intact is checked, the gas pipeline 1 is connected with the input pipe 2 through the electromagnetic valve body 3, the electromagnetic valve body 3 is electrically connected with the pressure detection mechanism 6 and is connected with a power supply, the flow meter is arranged on the inner side of the input pipe 2, natural gas is input through the input pipe 2 when the natural gas pipeline is used, the electromagnetic valve body 3 is opened after the flow meter sends out a pulse signal through the signal conversion module, so that the natural gas can be stably conveyed through the gas pipeline 1 and the input pipe 2, the shunting box 702 is arranged at one end of the gas pipeline 1, so that the natural gas on the inner side of the shunting box 702 can be shunted and conveyed through the output pipe 703, when the gas consumption on the inner side of the output pipe 703 does not reach the initial flow rate of the flow meter, the flow meter is in a stop state and does not output the pulse signal, the electromagnetic valve body 3 automatically closes and stops gas supply operation to the gas pipeline 1, at this moment, the natural gas output by the output pipe 703 is the residual quantity inside the gas transmission pipeline 1, when the residual natural gas pressure inside the gas transmission pipeline 1 is lower than the set pressure, specifically, the pressure switch main body 607 is connected with the gas transmission pipeline 1 through the flow guide pipe 604, so that the gas pressure inside the gas transmission pipeline 1 can be monitored in real time through the pressure switch main body 607, and the monitoring data can be transmitted to the inside of the solenoid valve body 3 through the lead main body 606 and the lead installation pipe 5, the solenoid valve body 3 is opened and supplies gas to the inside of the gas transmission pipeline 1, and the gas supply amount can meet the minimum operation of the flowmeter, so that the display value of the flowmeter changes, the solenoid valve body 3 is automatically closed after completing the gas supply, through the above cycle reciprocating construction period, the flowmeter can accurately perform metering operation under the condition of small flow, and the metering loss is reduced.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. 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 (10)
1. The utility model provides a natural gas flow control system, includes flowmeter, ball valve, solenoid valve, combustible gas alarm control box, combustible gas alarm probe, pressure control mechanism, gas appliances and signal conversion module, its characterized in that: the flowmeter, the signal conversion module, the electromagnetic valve, the combustible gas alarm control box, the combustible gas alarm probe and the pressure control mechanism are all electrically connected, the flowmeter is connected with the electromagnetic valve through a ball valve, the electromagnetic valve is connected with gas equipment through a pipeline, and the combustible gas alarm probe is arranged on the inner wall of the pipeline.
2. A natural gas flow control system according to claim 1, wherein: the two ends of the flowmeter are provided with ball valves, and the flowmeter is connected with the electromagnetic valve through a signal conversion module.
3. A natural gas flow control system according to claim 1, wherein: the pressure control mechanism comprises a pressure detection mechanism (6) and an electromagnetic valve body (3), the pressure detection mechanism (6) comprises a connecting clamping ring (601), a supporting foot frame (602), a sealing box body (603), a guide pipe (604), a heat dissipation plate (605), a lead main body (606), a pressure switch main body (607), a sealing partition plate (608) and a battery block (609), the two ends of the sealing box body (603) are fixedly provided with the supporting foot frame (602), the bottom end of the supporting foot frame (602) is provided with the connecting clamping ring (601), the middle part of the lower end face of the sealing box body (603) is provided with the guide pipe (604), the inner side of the sealing box body (603) is provided with the pressure switch main body (607), the upper end face of the pressure switch main body (607) is provided with the lead main body (606), and the heat dissipation plate (605) is arranged on the outer side of the lead main body (606), a battery block (609) is arranged on one side of the heat dissipation plate (605), and a sealing partition plate (608) is arranged on the upper end face of the battery block (609).
4. A natural gas flow control system according to claim 3, wherein: gas transmission pipeline (1) is installed to the inboard of pressure measurement mechanism (6) bottom, solenoid valve body (3) are installed to the one end of gas transmission pipeline (1), gas distribution mechanism (7) are installed with gas to the other end of gas transmission pipeline (1), the up end of solenoid valve body (3) is provided with seal receptacle (4), the one end of solenoid valve body (3) is provided with input tube (2), solenoid valve body (3) are connected through wire installation pipe (5) with pressure measurement mechanism (6).
5. A natural gas flow control system according to claim 3, wherein: with gas distribution mechanism (7) including with gas tank (701), flow distribution box (702), output tube (703), access panel (704), fan case (705), spliced pole (706) and protection casing (707), spliced pole (706) are installed to the inboard at protection casing (707) middle part, install gas tank (701) in the outside of spliced pole (706) bottom, evenly install four fan case (705) with the up end of gas tank (701), the inboard fixed mounting with gas tank (701) has flow distribution box (702), seven output tube (703) are all installed to the both sides of flow distribution box (702), install access panel (704) with one side of gas tank (701).
6. A natural gas flow control system according to claim 3, wherein: the two ends of the electromagnetic valve body (3) are connected with the gas transmission pipeline (1) and the input pipe (2) through threads, and the two ends of the electromagnetic valve body (3) are provided with sealing rings on the inner sides of the gas transmission pipeline (1) and the input pipe (2).
7. A natural gas flow control system according to claim 3, wherein: the upper end face of the electromagnetic valve body (3) is fixedly connected with the sealing seat (4) through screws, one end of the lead installation pipe (5) penetrates through the sealing seat (4) and is connected with the electromagnetic valve body (3) through threads, and a lead is arranged on the inner side of the lead installation pipe (5).
8. A natural gas flow control system according to claim 3, wherein: the lead mounting tube (5) penetrates through the sealing partition plate (608) and is connected with the battery block (609) through a lead, the heat dissipation plate (605) is fixedly connected with the sealing box body (603) through a screw, the battery block (609) is connected with the pressure switch main body (607) through the lead main body (606), and the bottom end of the pressure switch main body (607) is connected with the gas transmission pipeline (1) through the flow guide tube (604).
9. A natural gas flow control system according to claim 3, wherein: the two ends of the sealing box body (603) are welded and fixed with the support foot rest (602), the bottom end of the support foot rest (602) is fixedly connected with the two ends of the connecting clamp ring (601) through screws, and the bottom end of the flow guide pipe (604) is connected with the gas transmission pipeline (1) through threads.
10. A natural gas flow control system according to claim 5, wherein: one end of the output pipe (703) penetrates through the maintenance board (704) and is connected with the flow distribution box (702) through a sealing ring, the flow distribution box (702) is welded and fixed with the gas tank (701), and the inner side of the output pipe (703) is provided with a flow valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110941574.9A CN113653944A (en) | 2021-08-17 | 2021-08-17 | Natural gas flow control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110941574.9A CN113653944A (en) | 2021-08-17 | 2021-08-17 | Natural gas flow control system |
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| Publication Number | Publication Date |
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| CN113653944A true CN113653944A (en) | 2021-11-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110941574.9A Pending CN113653944A (en) | 2021-08-17 | 2021-08-17 | Natural gas flow control system |
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|---|---|---|---|---|
| CN202598569U (en) * | 2012-03-31 | 2012-12-12 | 上海梅山钢铁股份有限公司 | Secondary air supply adjustment device for injection main pipe of coal powder injection system |
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| CN205091622U (en) * | 2015-09-24 | 2016-03-16 | 潞安卓泰祥和金属科技宜兴有限公司 | A natural gas flow control device for shaft furnace |
| CN205118663U (en) * | 2015-11-04 | 2016-03-30 | 广东溢达纺织有限公司 | Gas appliances's high -low pressure adjusting device |
| CN105674060A (en) * | 2016-01-01 | 2016-06-15 | 深圳德尔科机电环保科技有限公司 | Pressure-flow combined control energy-saving device and method for compressed air system |
| CN206930440U (en) * | 2017-07-19 | 2018-01-26 | 上海德尔格医疗器械有限公司 | A kind of test device of safety valve |
| CN209166762U (en) * | 2018-12-05 | 2019-07-26 | 长沙开元仪器有限公司 | A kind of air-tightness detection device |
| CN112858903A (en) * | 2021-03-04 | 2021-05-28 | 郑州赛奥电子股份有限公司 | SF (sulfur hexafluoride)6On-line monitoring system |
| CN112945326A (en) * | 2021-02-23 | 2021-06-11 | 吉林大学 | Gas flow measuring device and method |
| CN216046890U (en) * | 2021-08-17 | 2022-03-15 | 浙江振能天然气有限公司 | Natural gas flow control system |
-
2021
- 2021-08-17 CN CN202110941574.9A patent/CN113653944A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202598569U (en) * | 2012-03-31 | 2012-12-12 | 上海梅山钢铁股份有限公司 | Secondary air supply adjustment device for injection main pipe of coal powder injection system |
| CN103423597A (en) * | 2013-08-23 | 2013-12-04 | 潘兴科 | Residence gas leakage detection method and leakage prevention device |
| CN205091622U (en) * | 2015-09-24 | 2016-03-16 | 潞安卓泰祥和金属科技宜兴有限公司 | A natural gas flow control device for shaft furnace |
| CN205118663U (en) * | 2015-11-04 | 2016-03-30 | 广东溢达纺织有限公司 | Gas appliances's high -low pressure adjusting device |
| CN105674060A (en) * | 2016-01-01 | 2016-06-15 | 深圳德尔科机电环保科技有限公司 | Pressure-flow combined control energy-saving device and method for compressed air system |
| CN206930440U (en) * | 2017-07-19 | 2018-01-26 | 上海德尔格医疗器械有限公司 | A kind of test device of safety valve |
| CN209166762U (en) * | 2018-12-05 | 2019-07-26 | 长沙开元仪器有限公司 | A kind of air-tightness detection device |
| CN112945326A (en) * | 2021-02-23 | 2021-06-11 | 吉林大学 | Gas flow measuring device and method |
| CN112858903A (en) * | 2021-03-04 | 2021-05-28 | 郑州赛奥电子股份有限公司 | SF (sulfur hexafluoride)6On-line monitoring system |
| CN216046890U (en) * | 2021-08-17 | 2022-03-15 | 浙江振能天然气有限公司 | Natural gas flow control system |
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Application publication date: 20211116 |