CN111609978A - Aerify gaseous on-line monitoring system of looped netowrk cabinet - Google Patents
Aerify gaseous on-line monitoring system of looped netowrk cabinet Download PDFInfo
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- CN111609978A CN111609978A CN202010457309.9A CN202010457309A CN111609978A CN 111609978 A CN111609978 A CN 111609978A CN 202010457309 A CN202010457309 A CN 202010457309A CN 111609978 A CN111609978 A CN 111609978A
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- gas
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- main unit
- ring main
- monitoring system
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 100
- 238000000926 separation method Methods 0.000 claims description 28
- 239000003463 adsorbent Substances 0.000 claims description 4
- 230000009467 reduction Effects 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 102
- 229910018503 SF6 Inorganic materials 0.000 description 27
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 description 27
- 238000000354 decomposition reaction Methods 0.000 description 6
- 238000009835 boiling Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 229960000909 sulfur hexafluoride Drugs 0.000 description 2
- 229910018497 SFO2 Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 208000002173 dizziness Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- OBTWBSRJZRCYQV-UHFFFAOYSA-N sulfuryl difluoride Chemical compound FS(F)(=O)=O OBTWBSRJZRCYQV-UHFFFAOYSA-N 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 208000024891 symptom Diseases 0.000 description 1
- 230000009967 tasteless effect Effects 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/32—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators
- G01M3/3236—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators by monitoring the interior space of the containers
- G01M3/3272—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators by monitoring the interior space of the containers for verifying the internal pressure of closed containers
-
- 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
- F17D1/065—Arrangements for producing propulsion of gases or vapours
- F17D1/07—Arrangements for producing propulsion of gases or vapours by compression
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L11/00—Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group G01L7/00 or G01L9/00
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
- G01N21/3504—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing gases, e.g. multi-gas analysis
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Spectroscopy & Molecular Physics (AREA)
- General Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Health & Medical Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Emergency Alarm Devices (AREA)
Abstract
The invention relates to an online gas monitoring system of an inflatable ring main unit, which comprises a monitoring loop, wherein the monitoring loop comprises a gas pressure monitoring chamber, a concentration monitoring chamber, a booster pump and a booster tank which are sequentially connected, the gas inlet end of the gas pressure monitoring chamber is connected with a ring main unit gas box, the gas outlet end of the booster tank is connected with the ring main unit gas box, and a pressure valve is arranged between the booster tank and the ring main unit gas box. The technical problem of among the prior art gaseous looped netowrk cabinet monitoring system need constantly derive gaseous SF6 gas and lead to the reduction of looped netowrk cabinet internal gas pressure from the looped netowrk cabinet when detecting is solved.
Description
Technical Field
The invention relates to the field of ring main unit monitoring, in particular to an inflatable ring main unit gas online monitoring system.
Background
SF6 (sulfur hexafluoride) gas is a nontoxic, colorless, tasteless and noncombustible inert gas, SF6 molecular structure is arranged in an octahedron shape, bonding distance is small, bonding energy is high, stability is high, and the sulfur hexafluoride gas has excellent insulating property and arc extinguishing property and is widely applied to electric power systems. In the gas-filled ring main unit, SF6 is generally used as an arc extinguishing gas, and during the use process, some SF6 gas leakage inevitably occurs. The leaked SF6 gas and some toxic and harmful substances in the gas can pollute the indoor environment, so that the health and even the life of workers entering the room, patrol and overhaul personnel are seriously threatened. In addition, under the conditions of partial discharge, high temperature and the like in the ring main unit, SF6 can be decomposed to generate various characteristic decomposition components such as SFO2, SO2F2, H2S, CS2, SO2 and the like. The gas not only can corrode the solid insulating material in the ring main unit to cause the reduction of the insulating property of the ring main unit, but also mostly contains toxicity, and the human body can generate symptoms such as dizziness and the like when being inhaled, and even endangers life. Therefore, a good SF6 gas leak monitoring system is valued and focused by power industry practitioners.
In the existing gas detection process of the ring main unit SF6, gas is generally required to be led out of the ring main unit during detection, and the gas taking times are too many, so that the internal gas pressure of equipment to be detected is reduced, the insulation performance of the equipment is reduced, and even the safe and stable operation of the equipment is threatened.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides an inflatable ring main unit gas online monitoring system for solving the technical problem that SF6 gas needs to be continuously led out from a ring main unit to reduce the pressure in the ring main unit when a gas ring main unit monitoring system in the prior art is used for detecting.
The purpose of the invention is realized by the following technical scheme:
the utility model provides an aerify gaseous on-line monitoring system of looped netowrk cabinet, includes the monitoring return circuit, the monitoring return circuit is including the atmospheric pressure monitoring room, concentration monitoring room, booster pump and the pressure boost jar that connect gradually, the inlet end and the looped netowrk cabinet gas tank of atmospheric pressure monitoring room are connected, the pressure boost jar give vent to anger the end with the looped netowrk cabinet gas tank is connected, the pressure boost jar with be equipped with the pressure valve between the looped netowrk cabinet gas tank.
The system further comprises a control center, wherein an air pressure sensor is arranged in the air pressure monitoring chamber, the front end of the concentration monitoring chamber is connected with a first electromagnetic valve, and the air pressure sensor, the electromagnetic valve, the concentration monitoring chamber and the booster pump are respectively connected with the control center.
The system further comprises a separation loop, wherein the separation loop is connected between the air pressure monitoring chamber and the booster pump, the separation loop comprises a gas separation chamber, the front end of the gas separation chamber is connected with a second electromagnetic valve, and the second electromagnetic valve is connected with the control center.
Furthermore, the rear end of the concentration monitoring chamber is connected with a first one-way valve, and the rear end of the gas separation chamber is connected with a second one-way valve.
Preferably, the gas separation chamber comprises a low-temperature coil and a low-temperature box, the low-temperature coil is arranged in the low-temperature box, and an adsorbent is arranged on the inner wall of the low-temperature coil.
Furthermore, the system also comprises a remote monitoring center, wherein the control center is connected with a first wireless end, the remote monitoring center is connected with a second wireless end, and the first wireless end is in wireless connection with the second wireless end.
Furthermore, the control center is also connected with an alarm device.
Preferably, the concentration monitoring chamber is internally provided with an SF gas infrared monitoring sensor, and the SF gas infrared monitoring sensor is connected with the control center.
The invention has the following beneficial effects: the invention provides an online gas monitoring system of an inflatable ring main unit, which comprises a monitoring loop, wherein two ends of the monitoring loop are respectively connected with a ring main unit gas tank; and a concentration monitoring chamber is arranged and used for monitoring the concentration of SF6 gas in the ring main unit gas box so as to monitor the decomposition condition of SF 6. During monitoring, the booster pump is used as the power for gas flowing, SF6 gas in the ring main unit gas box sequentially passes through the monitoring of the gas pressure monitoring chamber and the concentration monitoring chamber and is compressed into the booster tank by the booster pump, and the gas in the booster tank flows back into the ring main unit gas box due to the fact that the booster tank is connected with the ring main unit gas box, so that the backflow of SF6 gas is guaranteed, the gas outlet end of the booster tank is connected with the pressure valve, and under the action of the pressure valve, the gas in the booster tank can flow into the ring main unit gas box only when the booster tank reaches a certain pressure value, so that the gas pressure in the ring main unit gas box is kept at a high pressure value.
Drawings
Fig. 1 is a schematic structural diagram of an online gas monitoring system of an inflatable ring main unit according to the present invention;
FIG. 2 is a schematic diagram of the structure of the separation circuit of the present invention;
fig. 3 is a schematic diagram of a control connection structure of the gas online monitoring system of the inflatable ring main unit.
The specific structure in the figure illustrates that: the system comprises a ring main unit gas tank 1, a gas pressure monitoring chamber 2, a gas pressure sensor 21, a concentration monitoring chamber 3, an electromagnetic valve 31, a first check valve 32, a gas separation chamber 4, a second electromagnetic valve 41, a second check valve 42, a low-temperature tank 43, a low-temperature coil 44, a booster pump 5, a booster tank 6, a pressure valve 61, a control center 7, an alarm device 71, a first wireless terminal 72, a second wireless terminal 73 and a remote monitoring center 74.
Detailed Description
The present invention will be described in further detail with reference to the following examples, which are given in the accompanying drawings.
Referring to fig. 1, an aerify gaseous on-line monitoring system of looped netowrk cabinet, including the monitoring return circuit, the monitoring return circuit is including atmospheric pressure monitoring room 2, concentration monitoring room 3, booster pump 5 and the pressure boost jar 6 that connects gradually, the inlet end and the looped netowrk cabinet gas tank 1 of atmospheric pressure monitoring room 2 are connected, the end of giving vent to anger of pressure boost jar 6 with looped netowrk cabinet gas tank 1 is connected, pressure boost jar 6 with be equipped with pressure valve 61 between the looped netowrk cabinet gas tank 1.
The air pressure monitoring chamber 2 is arranged and can be used for monitoring the air pressure of the ring main unit air box 1 so as to monitor whether the ring main unit air box 1 leaks or not; the concentration monitoring chamber 3 is arranged for monitoring the concentration of SF6 gas in the ring main unit gas box 1, so as to monitor the decomposition condition of SF 6. During monitoring, the booster pump 5 is used as the power for gas flowing, SF6 gas in the ring main unit gas box 1 sequentially passes through the monitoring of the gas pressure monitoring chamber 2 and the concentration monitoring chamber 3 and is compressed into the booster tank 6 by the booster pump 5, and the booster tank 6 is connected with the ring main unit gas box 1, so that the gas in the booster tank 6 can flow back into the ring main unit gas box 1, so as to ensure the supplement of SF6 gas, the gas outlet end of the booster tank 6 is connected with the pressure valve 61, under the action of the pressure valve 61, the booster tank is ensured to flow into the ring main unit gas box 1 only when reaching a certain pressure value, and the gas pressure in the ring main unit gas box 1 is ensured to be kept at a high pressure value.
The system further comprises a control center 7, wherein an air pressure sensor 21 is arranged in the air pressure monitoring chamber 2, the front end of the concentration monitoring chamber 3 is connected with a first electromagnetic valve 31, and the air pressure sensor 21, the electromagnetic valve 31, the concentration monitoring chamber 3 and the booster pump 5 are respectively connected with the control center 7. Set up first solenoid valve 31, can be used to the break-make of control concentration monitoring room 3, open first solenoid valve 31 when needs detect concentration, close first solenoid valve 31 when not needing to this energy saving is realized to setting up control center 7, and accessible control center 7 carries out automatic cooperative control to each part in this monitoring system, guarantees the normal work of system.
The system further comprises a separation loop, the separation loop is connected between the air pressure monitoring chamber 2 and the booster pump 5, the separation loop comprises a gas separation chamber 4, the front end of the gas separation chamber 4 is connected with a second electromagnetic valve 41, and the second electromagnetic valve 41 is connected with the control center 7. Set up second solenoid valve 41, open second solenoid valve 41 when needing to carry out gas separation again, close second solenoid valve 41 when need not carrying out gas separation, set up the separation return circuit, can be used to separate the multiple harmful gas that produces after SF6 decomposes to this avoids harmful gas to the inside corruption of looped netowrk cabinet, guarantee equipment's life and security performance.
Further, a first check valve 32 is connected to the rear end of the concentration monitoring chamber 3, and a second check valve 42 is connected to the rear end of the gas separation chamber 4. The first check valve 32 and the second check valve 42 are provided separately, so that the reverse flow of gas can be prevented.
Preferably, the gas separation chamber 4 includes a low temperature coil 44 and a low temperature box 43, the low temperature coil 44 is disposed in the low temperature box 43, and an adsorbent is disposed on an inner wall of the low temperature coil 44. Because the boiling points of various gases are different, for example, the boiling point of SF6 gas is-51 ℃, and the boiling point of most gases in various gases generated after decomposition is greater than-51 ℃, most harmful gases can be separated by using a low-temperature separation method, that is, as long as the temperature of the gas separation chamber 4 is higher than-51 ℃, for example, the temperature of the gas separation chamber is kept at-50 ℃, when the gas flows into the low-temperature coil 44, the gas with the boiling point higher than-50 ℃ will be liquefied, and the liquefied gas will be absorbed by the adsorbent, and the SF6 gas will stably flow back into the ring main unit gas box 1 through the low-temperature coil 44.
Further, the system further comprises a remote monitoring center 74, the control center 7 is connected with a first wireless terminal 72, the remote monitoring center 74 is connected with a second wireless terminal 73, and the first wireless terminal 72 and the second wireless terminal 73 are wirelessly connected. The remote monitoring center 74 is arranged, so that the working state of the ring main unit can be remotely monitored, real-time monitoring is carried out on the monitoring result of the monitoring loop, remote centralized monitoring can be realized, labor is saved, and the efficiency is improved.
Further, the control center 7 is also connected with an alarm device 71. The alarm device 71 is arranged, the alarm device 71 is arranged in the ring main unit, and when an emergency fault occurs, an alarm can be sent to a worker in time, so that the worker can respond in time, and the damage is stopped and the fault is removed in time.
Preferably, the concentration monitoring chamber 3 is internally provided with an SF gas infrared monitoring sensor, and the SF gas infrared monitoring sensor is connected with the control center 7. After infrared light passes through the gas, the SF6 gas absorbs infrared light of a certain waveband to attenuate energy, so that the wavelength of the infrared light can be set to be the value of the wavelength absorbed by the SF6 gas, the concentration of the SF6 gas can be monitored, and when the concentration of the SF6 gas obtained through monitoring is lower than a normal value, the decomposition of the SF6 gas is excessive, and the separation of harmful gas is needed.
The control process of this embodiment is: the operation of each equipment of control center 7 control, control center opens booster pump 5 operation, and when needs detected SF 6's concentration, control center 7 opened solenoid valve 31 and concentration monitoring room 3, and under booster pump 5's effect, the gaseous flow direction concentration monitoring room 3 behind the atmospheric pressure monitoring room 2 that flows through the pipeline of the gas in looped netowrk cabinet gas tank 1, concentration monitoring room 3 monitors SF6 concentration this moment. In order to save energy consumption, the concentration monitoring can be carried out continuously, and can adopt a timing detection form, for example, the concentration monitoring can be set to be carried out once a day for 30 minutes. The control center 7 transmits the monitoring result to the remote monitoring center 74 in real time.
If the concentration monitoring result is lower than the set value, the decomposition of table SF6 is excessive, and the decomposed gas needs to be separated. At this time, the control center 7 closes the electromagnetic valve 31 and the concentration monitoring chamber 3, and starts the second electromagnetic valve 41 and the gas separation chamber 4, so that the harmful gas in the gas is separated, and the normal operation of the ring main unit is ensured.
The above description is only a preferred embodiment of the present invention, but not intended to limit the scope of the invention, and all simple equivalent changes and modifications made in the claims and the description of the invention are within the scope of the invention.
Claims (8)
1. The utility model provides an aerify gaseous on-line monitoring system of looped netowrk cabinet which characterized in that: including the monitoring return circuit, the monitoring return circuit is including atmospheric pressure monitoring room (2), concentration monitoring room (3), booster pump (5) and pressure boost jar (6) that connect gradually, the inlet end and the looped netowrk cabinet gas tank (1) of atmospheric pressure monitoring room (2) are connected, the end of giving vent to anger of pressure boost jar (6) with looped netowrk cabinet gas tank (1) are connected, pressure boost jar (6) with be equipped with pressure valve (61) between looped netowrk cabinet gas tank (1).
2. The gas online monitoring system of the inflatable ring main unit as claimed in claim 1, wherein: still include control center (7), be equipped with baroceptor (21) in baroceptor (2), concentration monitoring room (3) front end is connected with first solenoid valve (31), baroceptor (21), solenoid valve (31), concentration monitoring room (3) and booster pump (5) respectively with control center (7) are connected.
3. The gas online monitoring system of the inflatable ring main unit as claimed in claim 2, wherein: still include the separating circuit, the separating circuit connect in atmospheric pressure monitoring room (2) with between booster pump (5), the separating circuit includes gas separation room (4), gas separation room (4) front end is connected with second solenoid valve (41), second solenoid valve (41) with control center (7) are connected.
4. The gas online monitoring system of the inflatable ring main unit as claimed in claim 3, wherein: the rear end of the concentration monitoring chamber (3) is connected with a first one-way valve (32), and the rear end of the gas separation chamber (4) is connected with a second one-way valve (42).
5. The gas online monitoring system of the inflatable ring main unit as claimed in claim 3, wherein: the gas separation chamber (4) comprises a low-temperature coil (44) and a low-temperature box (43), the low-temperature coil (44) is arranged in the low-temperature box (43), and an adsorbent is arranged on the inner wall of the low-temperature coil (44).
6. The gas online monitoring system of the inflatable ring main unit as claimed in claim 3, wherein: the wireless monitoring system is characterized by further comprising a remote monitoring center (74), wherein the control center (7) is connected with a first wireless terminal (72), the remote monitoring center (74) is connected with a second wireless terminal (73), and the first wireless terminal (72) is wirelessly connected with the second wireless terminal (73).
7. The gas online monitoring system of the inflatable ring main unit as claimed in claim 6, wherein: the control center (7) is also connected with an alarm device (71).
8. The gas online monitoring system of the inflatable ring main unit as claimed in claim 2, wherein: be equipped with gaseous infrared monitoring sensor of SF in concentration monitoring room (3), gaseous infrared monitoring sensor of SF with control center (7) are connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010457309.9A CN111609978A (en) | 2020-05-26 | 2020-05-26 | Aerify gaseous on-line monitoring system of looped netowrk cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010457309.9A CN111609978A (en) | 2020-05-26 | 2020-05-26 | Aerify gaseous on-line monitoring system of looped netowrk cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111609978A true CN111609978A (en) | 2020-09-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010457309.9A Withdrawn CN111609978A (en) | 2020-05-26 | 2020-05-26 | Aerify gaseous on-line monitoring system of looped netowrk cabinet |
Country Status (1)
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| CN (1) | CN111609978A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113193505A (en) * | 2021-04-27 | 2021-07-30 | 国网新疆电力有限公司昌吉供电公司 | Power distribution website trouble early warning device |
-
2020
- 2020-05-26 CN CN202010457309.9A patent/CN111609978A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113193505A (en) * | 2021-04-27 | 2021-07-30 | 国网新疆电力有限公司昌吉供电公司 | Power distribution website trouble early warning device |
| CN113193505B (en) * | 2021-04-27 | 2022-07-15 | 国网新疆电力有限公司昌吉供电公司 | Power distribution website trouble early warning device |
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Application publication date: 20200901 |