CN106979994B - Portable device for recovering and recycling test tail gas - Google Patents
Portable device for recovering and recycling test tail gas Download PDFInfo
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- CN106979994B CN106979994B CN201710349136.7A CN201710349136A CN106979994B CN 106979994 B CN106979994 B CN 106979994B CN 201710349136 A CN201710349136 A CN 201710349136A CN 106979994 B CN106979994 B CN 106979994B
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- G—PHYSICS
- G01—MEASURING; TESTING
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- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
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Abstract
The application belongs to the technical field of sulfur hexafluoride test tail gas recovery, and particularly relates to a portable device for test tail gas recovery and recycling. The portable device provided by the invention is of a pipeline structure, the flow direction of the test tail gas in the pipeline structure is controlled by controlling the on/off of a plurality of electromagnetic valves in the pipeline structure, the recovery or the recycling of the test tail gas is realized, the portable device is simple in structure and easy to carry, the sulfur hexafluoride tail gas after the test is selectively recovered or returned to the electrical equipment again for recycling, and the portable device is green and environment-friendly.
Description
Technical Field
The invention belongs to the technical field of sulfur hexafluoride test tail gas recovery, and particularly relates to a portable device for recovering and recycling test tail gas.
Background
Sulfur hexafluoride gas is widely used in various medium and high voltage electrical devices in the power industry due to its excellent chemical stability, good insulation and arc extinguishing properties. According to the requirements of 'standard of test for handing over electrical equipment' and 'preventive test procedure', a plurality of tests such as humidity, purity, decomposition products and the like are carried out on sulfur hexafluoride gas in electrical equipment every year. However, the test frequency is high, so the sulfur hexafluoride tail gas emission after the test is large.
Sulfur hexafluoride is also one of the main greenhouse gases, can stably exist in the atmosphere for 3200 years, has the greenhouse effect 23900 times that of equal amount of carbon dioxide, and a small amount of sulfur hexafluoride gas can also cause very large greenhouse effect. Sulfur hexafluoride gas in equipment operation may generate various toxic or extremely toxic gases due to failures such as discharge, overheating and the like, and direct discharge of test tail gas exposes test personnel to the toxic gases, thereby endangering the safety and health of the test personnel. According to the requirements of a working scheme for controlling the emission of greenhouse gases, which is published by State administration, for thirteen five, the emission of carbon dioxide of the total value of production in China in a unit is reduced by 18 percent compared with that in 2015 by 2020, and the emission control degree of non-carbon dioxide greenhouse gases such as sulfur hexafluoride and the like needs to be further increased. According to the regulations of the air control law: the emission of harmful gases must be applied and measures against pollution accidents must be taken. Therefore, sulfur hexafluoride gas after test detection must be recovered in time or directly returned to equipment for recycling.
The current situation of recovering the tail gas of sulfur hexafluoride test of dozens of instrument manufacturers at home and abroad is investigated, so that the current domestic environmental awareness is relatively poor, the tail gas after the sulfur hexafluoride test is directly discharged into the environment without any treatment measures basically, and the safety influence on the environment and testers is large. The gas detection instruments used in the overhaul operation are only provided with exhaust gas connecting pipelines, tail gas collecting equipment matched with the gas detection instruments is not provided, and sulfur hexafluoride tail gas after the test is directly exhausted to the atmosphere through the exhaust gas connecting pipelines. Therefore, how to reduce the usage and discharge of sulfur hexafluoride gas is an important research direction and hot issue.
The sulfur hexafluoride gas recovery device used at home and abroad at present can only realize the recovery of sulfur hexafluoride test tail gas, when the test tail gas qualified in detection needs to be reused, the recovered test tail gas needs to be manually extracted and injected into electrical equipment, the operation is complex, and the repeated recycling of the test tail gas qualified in the process of recovering the test tail gas cannot be realized. Moreover, the currently used sulfur hexafluoride gas recovery device is large and heavy, is inconvenient for field operation, and cannot realize real-time recovery of the tested sulfur hexafluoride gas tail gas. Therefore, it is an urgent technical problem for those skilled in the art to develop a portable device for recovering and recycling test tail gas and apply the portable device to the recovery and recycling of sulfur hexafluoride test tail gas in the field of power equipment.
Disclosure of Invention
In view of the above, the invention discloses a portable device for recovering and recycling test tail gas, which is simple in structure and easy to carry, and is green and environment-friendly, and the sulfur hexafluoride tail gas after the test is selectively recovered or returned to the electrical equipment for recycling.
The specific technical scheme of the invention is as follows:
the invention discloses a portable device for recovering and recycling test tail gas, which is of a pipeline structure and comprises: the gas recovery system comprises a first gas inlet pipeline, a first gas outlet pipeline, a second gas inlet pipeline, a gas return pipeline and a gas recovery pipeline;
one end of the first gas inlet pipeline is respectively connected with the first gas outlet pipeline and the gas return pipeline through a three-way valve, and the other end of the first gas inlet pipeline is connected with electrical equipment;
one end of the gas recovery pipeline is respectively connected with the gas return pipeline and the second gas inlet pipeline through a three-way valve, and the other end of the gas recovery pipeline is connected with a gas recovery element;
the gas outlet of the first gas outlet pipeline is used for being connected with a gas inlet of a gas tester, and the gas inlet of the second gas inlet pipeline is used for being connected with a gas outlet of the gas tester;
all be provided with the solenoid valve on first inlet line, the first pipeline of giving vent to anger, second inlet line, the gas return line and the gas recovery pipeline for control test tail gas is in flow direction among the pipeline structure realizes the recovery or the recirculation of experiment tail gas.
Preferably, the solenoid valve includes: a first solenoid valve, a second solenoid valve, a third solenoid valve, a fourth solenoid valve, a fifth solenoid valve, a sixth solenoid valve and a seventh solenoid valve;
the first electromagnetic valve is arranged on the first air inlet pipeline, and one end of the first electromagnetic valve is connected with a manual ball valve of the electrical equipment;
the fifth solenoid valve is disposed in the gas return line.
Preferably, the portable device further comprises: the device comprises a gas buffer tank, a vacuum sensor, a vacuum pump, a booster pump and a first one-way valve;
the third electromagnetic valve, the gas buffer tank, the vacuum sensor, the fourth electromagnetic valve, the vacuum pump, the booster pump and the first one-way valve are sequentially arranged on the second gas inlet pipeline;
the third electromagnetic valve is close to the air inlet of the second air inlet pipeline.
Preferably, the portable device further comprises: a filter and a gas flow valve;
the filter, the second electromagnetic valve and the gas flow valve are sequentially arranged on the first gas outlet pipeline.
Preferably, the portable device further comprises: a second check valve and a third check valve;
the sixth electromagnetic valve, the second one-way valve, the seventh electromagnetic valve and the third one-way valve are sequentially arranged on the gas recovery pipeline;
the outlet end of the third one-way valve is connected with the gas recovery element.
Preferably, the first air inlet pipeline is a bidirectional pipeline.
Preferably, the first outlet pipeline, the second inlet pipeline, the gas return pipeline and the gas recovery pipeline are all one-way pipelines.
Preferably, the test tail gas is sulfur hexafluoride.
Preferably, the gas recovery element is a recovered gas buffer tank.
Preferably, the portable device further comprises: a PLC controller and a full-touch type operation panel;
the PLC controller is connected with the full-touch type operation panel, the electromagnetic valve, the vacuum pump, the booster pump and the vacuum sensor.
Preferably, the portable device further comprises: a metal housing; the full-touch operation panel is arranged on the surface of the metal shell; the first air inlet pipeline, the first air outlet pipeline, the second air inlet pipeline, the air return pipeline and the air recovery pipeline are all arranged in the metal shell.
Compared with the prior art, the portable device for recovering and recycling the test tail gas disclosed by the invention has the following advantages:
(1) By connecting the portable device disclosed by the invention with a gas tester and controlling the on-off of the electromagnetic valve, the tested sulfur hexafluoride tail gas can be selectively recovered or returned to the electrical equipment again for recycling, so that zero emission of the sulfur hexafluoride test tail gas is realized, and serious harm to the environment and human bodies caused by direct emission is avoided;
(2) The PLC controller is connected with the full-touch type operation panel, the electromagnetic valve, the vacuum pump, the booster pump and the vacuum sensor, so that automatic gas testing, recycling and recycling of sulfur hexafluoride electrical equipment are realized, and the sulfur hexafluoride electrical equipment has the advantages of high gas collection efficiency, low labor intensity and the like;
(3) The invention adopts a full touch screen man-machine operation interface, can freely design parameters according to requirements, and has advancement and convenience of operation;
(4) The invention provides an integrated design of a liquid crystal display screen, an automatic control device, a valve, a booster pump, a vacuum pump and a gas buffer tank, and the integrated design has a light structure and is convenient to carry;
(5) The device is internally provided with a 3.5L gas buffer tank, so that the possibility is provided for the subsequent selective utilization of a PLC (programmable logic controller) to control the opening or closing of the electromagnetic valve so as to realize the automatic recovery or the return of the gas to the operation of sulfur hexafluoride electrical equipment;
(6) The filter is arranged in the device and is mainly used for filtering dust particles with the filter diameter smaller than 1 mu m in the sulfur hexafluoride gas and preventing the pipeline of the gas detector from being blocked.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a portable device for recovering and recycling test exhaust according to a preferred embodiment of the present invention.
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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the present embodiment discloses a portable apparatus for recovering and recycling sulfur hexafluoride test tail gas, which is a pipeline structure and includes: the device comprises a first air inlet pipeline 1, a first air outlet pipeline 2, a second air inlet pipeline 3, a gas return pipeline 4 and a gas recovery pipeline 5; one end of the first air inlet pipeline 1 is respectively connected with the first air outlet pipeline 2 and the gas return pipeline 4 through a three-way valve, and the other end of the first air inlet pipeline 1 is connected with electrical equipment; one end of the gas recovery pipeline 4 is respectively connected with the gas return pipeline 4 and the second gas inlet pipeline 3 through a three-way valve, and the other end of the gas recovery pipeline is connected with a gas recovery element; the gas outlet 20 of the first gas outlet pipeline 2 is connected with a gas inlet 68 of the gas tester 6, and the gas inlet 30 of the second gas inlet pipeline 3 is connected with a gas outlet 69 of the gas tester 6; all be provided with the solenoid valve on first admission line 1, first pipeline 2, second admission line 3, the gaseous return line 4 and the gaseous recovery pipeline 5 of giving vent to anger, through opening or closing each solenoid valve control test tail gas flow direction in the pipeline structure, realize the recovery or the recirculation of experiment tail gas.
The solenoid valve includes: a first solenoid valve 61, a second solenoid valve 62, a third solenoid valve 63, a fourth solenoid valve 64, a fifth solenoid valve 65, a sixth solenoid valve 66, and a seventh solenoid valve 67.
The first electromagnetic valve 61 is arranged on the first air inlet pipeline 1, and one end of the first electromagnetic valve is connected with a manual ball valve of electrical equipment through a pipeline; a fifth solenoid valve 65 is provided in the gas return line 4.
The second air inlet pipeline 3 is sequentially provided with a third electromagnetic valve 63, an air buffer tank 31, a vacuum sensor 32, a fourth electromagnetic valve 64, a vacuum pump 33, a booster pump 34 and a first one-way valve 35, and the third electromagnetic valve 63 is close to the air inlet 30 of the second air inlet pipeline.
The first outlet pipe 2 is provided with a filter 21, a second electromagnetic valve 62 and a gas flow valve 22 in sequence.
The gas recovery pipeline 5 is provided with a sixth electromagnetic valve 66, a second one-way valve 52, a seventh electromagnetic valve 67 and a third one-way valve 53 in sequence, and the outlet end of the third one-way valve 53 is connected with a gas recovery element.
Further, the gas recycling pipeline 5 is communicated with the first gas inlet pipeline 1 through two three-way valves, the three-way valve arranged on the gas recycling pipeline 5 is positioned between the second one-way valve 52 and the seventh electromagnetic valve 67, and the three-way valve arranged on the first gas inlet pipeline 1 is positioned between the first electromagnetic valve 61 and the interfaces of the first gas inlet pipeline 1 and the first gas outlet pipeline 2.
Furthermore, in order to ensure the air tightness of the pipeline structure, the air outlet 20 of the first air outlet pipeline 2 is connected with the air inlet 68 of the gas tester 6 through a quick coupling, and the air inlet 30 of the second air inlet pipeline 3 is connected with the air outlet 69 of the gas tester 6 through a quick coupling; the recovered gas element is connected to the outlet of the third one-way valve 53 through a quick coupling.
The first air inlet pipeline 1 is a bidirectional pipeline, and the first air outlet pipeline 2, the second air inlet pipeline 3, the air return pipeline 4 and the air recovery pipeline 5 are all unidirectional pipelines. The gas recovery element can be selected as a recovery gas buffer tank with the specification of 8L, 10L or 40L;
further, the portable device further includes: PLC controller and full touch operating panel, PLC controller connection full touch operating panel, solenoid valve, vacuum pump, booster pump and vacuum sensor.
Further, the portable device of the present embodiment is further provided with a metal case 9, and the full-touch operation panel is provided on an outer surface of the metal case.
The above is a detailed description of the structure and connection mode of the portable device for recovering and recycling sulfur hexafluoride test tail gas disclosed by the present invention, and for easy understanding, the following description will be given of the application of the provided portable device in a specific application scenario:
1) And connecting the gas tester by adopting a quick connector, closing the first electromagnetic valve 61 and the fifth electromagnetic valve 65, starting the vacuum pump 33, and exhausting residual test tail gas in each pipeline.
2) Popping up a window on a full-touch type operation panel after vacuumizing is finished, displaying ' confirmation ' and ' self-checking ', and popping up an instrument test ' function menu after clicking ' confirmation '; and clicking self-checking, popping up '2 min' of the reciprocal value, displaying the pressure value at the same time, after the reciprocal value is finished, if the pressure is qualified (the amplitude is within 0.05 MPa), popping up a 'qualified self-checking' dialogue window by a touch type operation panel of the device, jumping to the next step of instrument test after clicking, popping up a 'failed self-checking' dialogue window by the touch type operation panel of the device if the self-checking is not qualified, and returning to the main menu of the first step.
3) Clicking an instrument test starting button, popping up a window to prompt that a user wants to open a manual ball valve, automatically opening a first electromagnetic valve 61, a second electromagnetic valve 62 and a third electromagnetic valve 63 after clicking certain solenoid valves, automatically closing the rest electromagnetic valves, allowing sulfur hexafluoride gas in the electrical equipment to enter a gas tester 6 through a first gas inlet 11, a first gas inlet pipeline 1, a first gas outlet pipeline 2 and a first gas outlet 21 for analysis and detection, and allowing test tail gas after detection to enter a second gas inlet pipeline 3 through a connecting pipeline and a second gas inlet 31 and temporarily store the test tail gas in a gas buffer tank 31. When the vacuum sensor 32 detects that the pressure exceeds 0.2MPa, the gas buffer tank 31 is full of the test tail gas sulfur hexafluoride, and at the moment, a window pops up on a touch operation panel of the device to form a return device and a buffer tank compressed to the recovered gas.
4) When the detection result of the gas tester 6 shows that the sulfur hexafluoride gas is qualified, the 'return equipment' is clicked, the sixth electromagnetic valve 66, the seventh electromagnetic valve 67 and the second electromagnetic valve 62 are automatically closed, the rest electromagnetic valves are automatically opened, the vacuum pump 33 and the booster pump 34 are started, and the test tail gas originally stored in the gas buffer tank 31 flows through the gas return pipeline 4 and the first gas inlet pipeline 1 through the pipelines and is injected into the electrical equipment again. When the pressure value of the pipeline reaches-0.09 MPa, the operation of the full-touch operation panel pop-up window of the device is finished, the vacuum pump 33 and the booster pump 34 are closed, and all the electromagnetic valves are closed.
5) When the detection result of the gas tester 6 shows that the content of toxic gas in sulfur hexafluoride gas is high, the gas tester clicks to compress the sulfur hexafluoride gas into the recovered gas buffer tank, the second electromagnetic valve 62, the fifth electromagnetic valve 65 and the first electromagnetic valve 61 are automatically closed, the other electromagnetic valves are automatically opened, the vacuum pump 33 and the booster pump 34 are started, and test tail gas originally stored in the gas buffer tank 31 flows through the gas recovery pipeline 5 through a pipeline and is injected into gas recovery software. When the pressure value of the pipeline reaches-0.09 MPa, the operation of the full-touch operation panel pop-up window of the device is finished, the vacuum pump 33 and the booster pump 34 are closed, and all the electromagnetic valves are closed.
While the present invention has been described in detail with reference to the preferred embodiments, the principles and embodiments of the present invention are illustrated in the accompanying drawings, and the present invention is not limited to the embodiments, but rather, the present invention is to be construed as limited to the specific embodiments and applications illustrated in the accompanying drawings.
Claims (7)
1. The utility model provides a portable device of experimental tail gas recovery and recycling which characterized in that, portable device is the pipeline structure, includes: the device comprises a first air inlet pipeline, a first air outlet pipeline, a second air inlet pipeline, a gas return pipeline, a gas recovery pipeline, a gas buffer tank, a vacuum sensor, a vacuum pump, a booster pump, a first one-way valve, a filter and a gas flow valve;
one end of the first gas inlet pipeline is respectively connected with the first gas outlet pipeline and the gas return pipeline through a three-way valve, and the other end of the first gas inlet pipeline is connected with electrical equipment;
one end of the gas recovery pipeline is respectively connected with the gas return pipeline and the second gas inlet pipeline through a three-way valve, and the other end of the gas recovery pipeline is connected with a gas recovery element;
the gas outlet of the first gas outlet pipeline is used for being connected with a gas inlet of a gas tester, and the gas inlet of the second gas inlet pipeline is used for being connected with a gas outlet of the gas tester;
the first air inlet pipeline, the first air outlet pipeline, the second air inlet pipeline, the gas return pipeline and the gas recovery pipeline are all provided with electromagnetic valves for controlling the flow direction of test tail gas in the pipeline structure and realizing the recovery or the recycling of the test tail gas;
the solenoid valve includes: a first solenoid valve, a second solenoid valve, a third solenoid valve, a fourth solenoid valve, a fifth solenoid valve, a sixth solenoid valve and a seventh solenoid valve; the first electromagnetic valve is arranged on the first air inlet pipeline, and one end of the first electromagnetic valve is connected with a manual ball valve of the electrical equipment; the fifth electromagnetic valve is arranged on the gas return pipeline;
the third electromagnetic valve, the gas buffer tank, the vacuum sensor, the fourth electromagnetic valve, the vacuum pump, the booster pump and the first one-way valve are sequentially arranged on the second gas inlet pipeline;
the third electromagnetic valve is close to the air inlet of the second air inlet pipeline;
the filter, the second electromagnetic valve and the gas flow valve are sequentially arranged on the first gas outlet pipeline.
2. The portable device of claim 1, further comprising: a second check valve and a third check valve;
the sixth electromagnetic valve, the second one-way valve, the seventh electromagnetic valve and the third one-way valve are sequentially arranged on the gas recovery pipeline;
the outlet end of the third one-way valve is connected with the gas recovery element.
3. The portable device of claim 1, wherein the first air intake duct is a bidirectional duct.
4. The portable apparatus of claim 1, wherein the first outlet duct, the second inlet duct, the gas return duct, and the gas recovery duct are all one-way ducts.
5. The portable device of claim 1, wherein the gas recovery element is a recovered gas buffer tank;
the test tail gas is sulfur hexafluoride.
6. The portable apparatus of claim 1, further comprising: a PLC controller and a full-touch type operation panel;
the PLC controller is connected with the full-touch type operation panel, the electromagnetic valve, the vacuum pump, the booster pump and the vacuum sensor.
7. The portable device of claim 6, further comprising: a metal housing;
the full-touch operation panel is arranged on the surface of the metal shell;
the first air inlet pipeline, the first air outlet pipeline, the second air inlet pipeline, the gas return pipeline and the gas recovery pipeline are all arranged in the metal shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710349136.7A CN106979994B (en) | 2017-05-17 | 2017-05-17 | Portable device for recovering and recycling test tail gas |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710349136.7A CN106979994B (en) | 2017-05-17 | 2017-05-17 | Portable device for recovering and recycling test tail gas |
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| Publication Number | Publication Date |
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| CN106979994A CN106979994A (en) | 2017-07-25 |
| CN106979994B true CN106979994B (en) | 2023-04-07 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102921266A (en) * | 2012-10-19 | 2013-02-13 | 深圳供电局有限公司 | Tail gas recovery device for sulfur hexafluoride gas test instrument |
| CN202823087U (en) * | 2012-10-19 | 2013-03-27 | 深圳供电局有限公司 | Tail gas recovery device of sulfur hexafluoride gas testing instrument |
| CN103463925A (en) * | 2013-09-14 | 2013-12-25 | 河南省日立信股份有限公司 | Tail gas recovery device based on pressure balance control method |
| CN203458945U (en) * | 2013-09-14 | 2014-03-05 | 河南省日立信股份有限公司 | Tail gas recovery device utilizing pressure balance control method |
| CN203886383U (en) * | 2013-11-26 | 2014-10-22 | 深圳供电局有限公司 | Portable micro-negative pressure sulfur hexafluoride experiment tail gas recycling bag |
-
2017
- 2017-05-17 CN CN201710349136.7A patent/CN106979994B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102921266A (en) * | 2012-10-19 | 2013-02-13 | 深圳供电局有限公司 | Tail gas recovery device for sulfur hexafluoride gas test instrument |
| CN202823087U (en) * | 2012-10-19 | 2013-03-27 | 深圳供电局有限公司 | Tail gas recovery device of sulfur hexafluoride gas testing instrument |
| CN103463925A (en) * | 2013-09-14 | 2013-12-25 | 河南省日立信股份有限公司 | Tail gas recovery device based on pressure balance control method |
| CN203458945U (en) * | 2013-09-14 | 2014-03-05 | 河南省日立信股份有限公司 | Tail gas recovery device utilizing pressure balance control method |
| CN203886383U (en) * | 2013-11-26 | 2014-10-22 | 深圳供电局有限公司 | Portable micro-negative pressure sulfur hexafluoride experiment tail gas recycling bag |
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