CN113109518A - Gas water content detection device of sulfur hexafluoride circuit breaker - Google Patents
Gas water content detection device of sulfur hexafluoride circuit breaker Download PDFInfo
- Publication number
- CN113109518A CN113109518A CN202110441963.5A CN202110441963A CN113109518A CN 113109518 A CN113109518 A CN 113109518A CN 202110441963 A CN202110441963 A CN 202110441963A CN 113109518 A CN113109518 A CN 113109518A
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- gas
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- sulfur hexafluoride
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- 238000001514 detection method Methods 0.000 title claims abstract description 83
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 60
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 title claims abstract description 53
- 229960000909 sulfur hexafluoride Drugs 0.000 title claims abstract description 53
- 229910018503 SF6 Inorganic materials 0.000 title claims abstract description 52
- 238000012544 monitoring process Methods 0.000 claims abstract description 31
- 238000004519 manufacturing process Methods 0.000 claims description 39
- 230000007246 mechanism Effects 0.000 claims description 18
- 239000011521 glass Substances 0.000 claims description 3
- 229920001296 polysiloxane Polymers 0.000 claims 1
- 238000007789 sealing Methods 0.000 description 44
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 239000000741 silica gel Substances 0.000 description 3
- 229910002027 silica gel Inorganic materials 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 231100000167 toxic agent Toxicity 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/24—Suction devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0011—Sample conditioning
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0073—Control unit therefor
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N2001/2297—Timing devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0011—Sample conditioning
- G01N2033/0019—Sample conditioning by preconcentration
Abstract
The invention discloses a gas water content detection device for a sulfur hexafluoride breaker, which comprises a gas collection device, a water content detection device and a control module, wherein the gas collection device is used for collecting sulfur hexafluoride gas from a gas chamber of the sulfur hexafluoride breaker and taking the sulfur hexafluoride gas as a monitoring sample, the water content detection device is used for detecting the water content in the monitoring sample collected by the gas collection device, and the control module is used for controlling the gas collection device and the water content detection device and analyzing the data detected by the water content detection device. According to the invention, after the gas collection device collects the monitoring sample, the water content of the monitoring sample can be directly detected by the water content detection device, and the monitoring sample can be discharged back to the gas chamber after the detection is finished, so that the consumption of sulfur hexafluoride gas is not required.
Description
Technical Field
The invention relates to the technical field of circuit breaker detection devices, in particular to a device for detecting the water content of sulfur hexafluoride circuit breaker gas.
Background
High-voltage circuit breakers can be divided into circuit breakers, compressed air circuit breakers, sulfur hexafluoride circuit breakers, vacuum circuit breakers, magnetic blow circuit breakers and the like. The sulfur hexafluoride circuit breaker is widely applied to electrical equipment with 63-500 kv voltage level in China. When the moisture content of the gas in the sulfur hexafluoride circuit breaker reaches a certain level, serious adverse effects can be caused, mainly in the following aspects: generating toxic compounds by the chemical combination reaction of sulfur hexafluoride gas decomposer caused by moisture; moisture causes chemical corrosion of the equipment; insulation damage of moisture to equipment; moisture affects the on-off performance of the switch; moisture reduces the mechanical properties of the switch. Therefore, power systems have placed stringent regulations and requirements on sulfur hexafluoride gas for use in high voltage circuit breakers. Accurate measurement and strict control of the water content in the sulphur hexafluoride breaker gas is therefore required.
At present, most of the detection of the water content of gas in the sulfur hexafluoride circuit breaker is carried out by adopting a detection device based on dew point detection, the detection device consumes long time for single detection, less, several minutes and more, dozens of minutes, and a certain amount of sulfur hexafluoride gas is consumed for each detection.
Disclosure of Invention
The invention mainly solves the technical problems that the existing sulfur hexafluoride breaker water content detection device consumes long time and needs to consume a certain amount of sulfur hexafluoride gas in a single detection; the utility model provides a gaseous water content detection device of sulfur hexafluoride circuit breaker, accessible water content detection device carries out direct detection and can arrange the monitoring sample back to the air chamber after detecting the completion to the water content of monitoring sample after gaseous collection system gathers the monitoring sample, need not to consume sulfur hexafluoride gas.
The technical problem of the invention is mainly solved by the following technical scheme: the invention comprises the following steps:
the gas collection device is used for collecting sulfur hexafluoride gas from a gas chamber of the sulfur hexafluoride circuit breaker as a monitoring sample;
the water content detection device is used for detecting the water content in the monitoring sample collected by the gas collection device;
and the control module is used for controlling the gas acquisition device and the water content detection device and analyzing the data detected by the water content detection device.
According to the invention, after the gas collection device collects the monitoring sample, the water content of the monitoring sample can be directly detected through the water content detection device, the detection speed is high, the detection device is not installed in the gas chamber, the structure of the gas chamber is not changed, the safety of the operation of the circuit breaker is ensured, and meanwhile, the monitoring sample can be discharged back into the gas chamber after the detection is finished without consuming sulfur hexafluoride gas.
Preferably, the gas collection device comprises a mounting frame arranged at the detection port of the gas chamber and a gas collector arranged on the mounting frame, the gas collector comprises a collection pipe with an open end and a closed end, a piston and a driving mechanism used for driving the piston to move back and forth relative to the collection pipe are arranged in the collection pipe, and a detection hole is formed in the side wall of the collection pipe and used for being connected with the water content detection device.
Preferably, the driving mechanism comprises a driving spring and a driving circuit A for supplying power to the driving spring, the driving circuit A is controlled by the control module, one end of the driving spring is connected with the piston, and the other end of the driving spring is connected with the closed end of the collecting tube.
The driving spring and the driving circuit A are adopted as the driving mechanism, and the occupied space position is small compared with other driving mechanisms, so that the normal installation and use of the circuit breaker can not be influenced.
Preferably, the air chamber detection port is provided with a sealing mechanism, the sealing mechanism comprises a sealing plate, a sealing spring for driving the sealing plate to move and a driving circuit B for supplying power to the sealing spring, the driving circuit B is controlled by the control module, one end of the sealing spring is connected with the sealing plate, and the other end of the sealing spring is connected with the air chamber wall.
When the closing mechanism does not detect, the closing mechanism closes the detection port, so that the sealing performance of the air chamber is ensured, the sulfur hexafluoride gas is prevented from overflowing, and the operation safety of the circuit breaker is further ensured. After the monitoring sample is collected, the sealing mechanism also seals the detection port, so that the sulfur hexafluoride gas is prevented from entering the collecting pipe excessively and affecting the operation safety of the circuit breaker.
Preferably, the water content detection device include shell, adopt inflator, electro-magnet, cock post and gas production pipe, adopt inflator, electro-magnet, magnet and cock post and all install inside the shell, the bottom of shell is equipped with the mounting hole that is used for installing the gas production pipe, the top of cock post and the top fixed connection of shell, the bottom of cock post is equipped with little water content sensor, the inside of adopting the inflator is established to the cock post cover, adopt inflator and cock post sliding connection, the bottom of adopting the inflator is linked together with the gas production pipe, the both sides on the top of cock post are provided with the electro-magnet, the top of adopting the inflator is provided with the magnet corresponding with the electro-magnet.
The control module controls the electromagnet to generate a magnetic field with the polarity opposite to that of the magnet, so that the gas production cylinder is pushed to move, the gas production cylinder moves to drive the gas production pipe to extend into the collection pipe, negative pressure is formed due to the fact that the space between the gas production cylinder and the plug is enlarged, sulfur hexafluoride gas in the collection pipe enters the gas production cylinder through the gas production pipe, and the micro-water content sensor detects the water content of the sulfur hexafluoride gas in the gas production cylinder and uploads the water content to the control module.
Preferably, the periphery of the piston is provided with a silica gel pad.
The sliding friction between the piston and the collection pipe is reduced, and meanwhile, the airtight effect is achieved, and collected sulfur hexafluoride gas is prevented from entering the containing cavity where the driving spring is located.
Preferably, the collecting tube is a glass tube, one side of the collecting tube is provided with a light emitter, the other side of the collecting tube is correspondingly provided with a light receiver, and the light emitter and the light receiver are both controlled by the control module.
The light emitter regularly is to light receiver transmission light, if the time that light receiver received light surpassed the settlement time, the volume of the monitoring sample of explaining gathering this moment is enough, carries out real-time supervision to the volume of the monitoring sample of gathering, prevents that the volume of the monitoring sample of gathering from too much producing the influence to the operation safety of circuit breaker, carries out the detection of water content immediately when the volume of the monitoring sample of monitoring gathering is enough simultaneously for detection speed.
The invention has the beneficial effects that: 1) according to the invention, after the gas collection device collects the monitoring sample, the water content of the monitoring sample can be directly detected through the water content detection device, the detection speed is high, the detection device is not installed in the gas chamber, the structure of the gas chamber is not changed, the safety of the operation of the circuit breaker is ensured, and meanwhile, the monitoring sample can be discharged back into the gas chamber after the detection is finished without consuming sulfur hexafluoride gas; 2) when the closing mechanism does not detect, the closing mechanism closes the detection port, so that the sealing performance of the air chamber is ensured, the sulfur hexafluoride gas is prevented from overflowing, and the operation safety of the circuit breaker is further ensured. After the monitoring sample is collected, the sealing mechanism also seals the detection port, so that the sulfur hexafluoride gas is prevented from entering the collecting pipe excessively and affecting the operation safety of the circuit breaker.
Drawings
FIG. 1 is a schematic block diagram of an architecture of the present invention.
Fig. 2 is a schematic view of a gas collecting apparatus and a water content detecting apparatus according to the present invention.
Fig. 3 is a circuit schematic of the drive circuit of the present invention.
In the figure, 1, a gas collecting device, 2, a water content detecting device, 3, a control module, 4, a gas chamber, 5, a detecting port, 101, a mounting rack, 102, a collecting pipe, 103, a driving spring, 104, a piston, 105, a silica gel pad, 106, a light emitter, 107, a light receiver, 108, a detecting hole, 201, a shell, 202, a gas production cylinder, 203, an electromagnet, 204, a magnet, 205, a plug column, 206 a gas production pipe, 207, a micro-water content sensor, 601, an upper sealing plate, 602, a lower sealing plate, 603, an upper sealing spring, 604, a lower sealing spring, 605 and a spring mounting hole.
Detailed Description
The technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings.
Example (b): the gas water content detection device for the sulfur hexafluoride circuit breaker in the embodiment, as shown in fig. 1, includes:
the gas collecting device 1 is used for collecting sulfur hexafluoride gas from a gas chamber of the sulfur hexafluoride circuit breaker as a monitoring sample;
the water content detection device 2 is used for detecting the water content in the monitoring sample collected by the gas collection device;
and the control module 3 is used for controlling the gas acquisition device and the water content detection device and analyzing the data detected by the water content detection device.
As shown in fig. 2, a circular detection port 5 is formed in the side wall of a gas chamber 4 of the sulfur hexafluoride circuit breaker, a cylindrical mounting frame 101 is fixedly mounted at the front end of the detection port, and the inner diameter of the cylindrical mounting frame is equal to the outer diameter of the detection port. Install gas collection ware in the mounting bracket, gas collection ware includes that the material is glass pipe and one end opening, one end confined gathers pipe 102, gather when managing the installation in the mounting bracket, the open end of gathering the pipe is close to the detection mouth, the detection mouth is kept away from to the blind end of gathering the pipe, gather the one end of fixedly connected with drive spring 103 on the closed end of pipe, drive spring's other end fixedly connected with piston 104, the periphery of piston is pasted and is had silica gel pad 105, drive spring links to each other with drive circuit A electricity, gather one side of pipe and install light emitter 106, light receiver 107 corresponding with light emitter is installed to the other end, drive circuit A, light emitter and light receiver all are controlled by control module.
The detection port is provided with a sealing mechanism, the sealing mechanism comprises an upper sealing plate 601, a lower sealing plate 602, a plurality of upper sealing springs 603 and a plurality of lower sealing springs 604, the upper sealing plate and the lower sealing plate are semicircular and are correspondingly matched to completely seal the detection port. The side wall of the air chamber is provided with a plurality of spring mounting holes 605 which evenly surround the periphery of the detection opening. And one ends of the upper closed springs and the lower closed springs are fixedly arranged in the spring mounting holes, the other ends of the upper closed springs are fixedly connected with the upper closed plate, and the other ends of the lower closed springs are fixedly connected with the lower closed plate. The upper sealing springs and the lower sealing springs are connected with a driving circuit B, and the driving circuit B is controlled by the control module.
The water content detection device is fixedly arranged on the mounting frame and comprises a shell 201, a gas production cylinder 202, an electromagnet 203, a magnet 204, a plug 205 and a gas production pipe 206. Wherein adopt the inflator, the electro-magnet, magnet and cock stem are all installed inside the shell, shell and mounting bracket fixed connection, open the bottom of shell has the mounting hole, install in the inspection hole 108 that the collection pipe lateral wall was seted up after the mounting hole in the bottom of gas production pipe, the top of cock stem and the inner wall fixed connection on the top of shell, the bottom fixed mounting of cock stem has little water content sensor 207, the inside center at the gas production cylinder is established to the cock stem cover, gas production cylinder and cock stem sliding connection, the bottom of gas production cylinder is linked together with the top of gas production pipe, the both sides on the top of cock stem are provided with the electro-magnet, the top of gas production cylinder is provided with the magnet corresponding with the electro-magnet.
The driving circuit A is shown in fig. 3 and comprises a resistor R1, a resistor R2, a triode Q1, a diode D1, a relay KS1 and a power supply, wherein the base of the triode Q1 is connected with the control module through a resistor R1, the base of the triode Q1 is connected with the emitter through a resistor R2, the emitter of the triode Q1 is grounded, the collector of the emitter is connected with the anode of the diode D1, the cathode of the diode D1 is connected with the power supply, the coil of the relay KS1 is connected in parallel with the two poles of the diode D1, one end of a normally open switch of the relay 1 is connected with one end of a driving spring through the power supply, and the other end of the normally open switch of the relay KS1 is connected with. The number and the type of the electric components in the drive circuit B and the connection relationship between the electric components are the same as those in the drive circuit a.
The working principle of the embodiment is as follows:
when the detection is not carried out, the control module controls the driving circuit B to not electrify the upper sealing spring and the lower sealing spring to seal the detection port, so that the sealing performance of the air chamber is ensured, the sulfur hexafluoride gas is prevented from overflowing, and the operation safety of the circuit breaker is further ensured.
When the water content is detected, the control module controls the driving circuit B and the driving circuit A to work simultaneously, the driving circuit B supplies power to the upper sealing spring and the lower sealing spring, the upper sealing spring and the lower sealing spring are electrified and contracted to drive the upper sealing plate to move upwards and the lower sealing plate to move downwards, the detection port is not closed any more, the driving circuit A supplies power to the driving spring, the driving spring is electrified and contracted to drive the piston to move towards the closed end of the collection pipe, a short negative pressure state is formed at the position of the collection pipe where the piston passes through, and sulfur hexafluoride gas in the gas chamber enters the collection pipe through the detection port. Meanwhile, the light emitter emits light to the light receiver at regular time, if the time for receiving the light by the light receiver exceeds the set time, the quantity of the collected monitoring samples is enough, the control module controls the driving circuit B not to electrify the upper sealing spring and the lower sealing spring, the upper sealing spring and the lower sealing spring are not electrified and reset, the upper sealing plate and the lower sealing plate move to seal the detection port again, the control module controls the electromagnet to generate a magnetic field with the polarity opposite to that of the magnet, so as to push the gas production cylinder to move, the gas production cylinder moves to drive the gas production pipe to extend into the collection pipe, as the space between the gas production cylinder and the plug column is enlarged to form negative pressure, sulfur hexafluoride gas in the collecting pipe enters the gas production cylinder through the gas production pipe, the micro-water content sensor detects the water content of the sulfur hexafluoride gas in the gas production cylinder and uploads the detected water content to the control module.
And after receiving the detection data, the control module controls the electromagnet to generate a magnetic field with the same polarity as the magnet, controls the recovery of the gas production cylinder and the gas production pipe, and simultaneously returns the sulfur hexafluoride gas in the gas production cylinder to the value collection cylinder. When the sulfur hexafluoride gas in the gas collecting cylinder returns to the gas collecting cylinder, the control module controls the driving circuit A to not electrify the driving spring, and controls the driving circuit B to electrify the upper sealing spring and the lower sealing spring, so that the detection port is not closed any more, the driving spring is electrified and contracted, the piston is driven to move towards the opening end of the collecting pipe, and the sulfur hexafluoride gas in the collecting pipe is discharged into the gas chamber again. And after the sulfur hexafluoride gas is completely discharged into the gas chamber, the detection port is sealed again.
This embodiment accessible water content detection device carries out direct detection to the water content of monitoring sample after gaseous collection system gathers the monitoring sample, and detection speed is very fast, and does not install detection device in the air chamber, does not change the structure of air chamber, has guaranteed the security of circuit breaker operation, can arrange the monitoring sample back to the air chamber after the detection is accomplished simultaneously, need not to consume sulfur hexafluoride gas.
Claims (7)
1. The utility model provides a gaseous water content detection device of sulfur hexafluoride circuit breaker which characterized in that includes:
the gas collection device is used for collecting sulfur hexafluoride gas from a gas chamber of the sulfur hexafluoride circuit breaker as a monitoring sample;
the water content detection device is used for detecting the water content in the monitoring sample collected by the gas collection device;
and the control module is used for controlling the gas acquisition device and the water content detection device and analyzing the data detected by the water content detection device.
2. The gas moisture content detection device of the sulfur hexafluoride breaker as claimed in claim 1, wherein the gas collection device comprises a mounting frame arranged at the detection port of the gas chamber and a gas collector arranged on the mounting frame, the gas collector comprises a collection tube with an open end and a closed end, a piston and a driving mechanism for driving the piston to reciprocate relative to the collection tube are arranged in the collection tube, and a detection hole is formed in a side wall of the collection tube and used for being connected with the moisture content detection device.
3. The sulfur hexafluoride breaker gas water content detection device as claimed in claim 2, wherein the driving mechanism includes a driving spring and a driving circuit a for supplying power to the driving spring, the driving circuit a is controlled by the control module, one end of the driving spring is connected with the piston, and the other end is connected with the closed end of the collection tube.
4. The sulfur hexafluoride breaker gas water content detection device as claimed in claim 2, wherein the gas chamber detection port is provided with a closing mechanism, the closing mechanism includes a closing plate, a closing spring for driving the closing plate to move, and a driving circuit B for supplying power to the closing spring, the driving circuit B is controlled by the control module, one end of the closing spring is connected with the closing plate, and the other end of the closing spring is connected with a wall of the gas chamber.
5. The gas water content detection device for the sulfur hexafluoride breaker as recited in claim 1, wherein the water content detection device comprises a housing, a gas production cylinder, an electromagnet, a magnet, a plug and a gas production pipe, the gas production cylinder, the electromagnet, the magnet and the plug are all mounted inside the housing, a mounting hole for mounting the gas production pipe is formed in the bottom end of the housing, the top end of the plug is fixedly connected with the top end of the housing, a micro water content sensor is arranged at the bottom end of the plug, the plug is sleeved inside the gas production cylinder, the gas production cylinder is slidably connected with the plug, the bottom end of the gas production cylinder is communicated with the gas production pipe, the electromagnets are arranged on two sides of the top end of the plug, and the magnet corresponding to the electromagnets is arranged at the top end of the gas production cylinder.
6. The device for detecting the water content of the sulfur hexafluoride breaker as claimed in claim 2 or 3, wherein a silicone pad is arranged on the periphery of the piston.
7. The sulfur hexafluoride breaker gas water content detection device as claimed in claim 2, wherein the collection tube is a glass tube, one side of the collection tube is provided with a light emitter, the other side of the collection tube is correspondingly provided with a light receiver, and both the light emitter and the light receiver are controlled by the control module.
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| CN202110441963.5A CN113109518B (en) | 2021-04-23 | 2021-04-23 | Gas water content detection device of sulfur hexafluoride circuit breaker |
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| CN202110441963.5A CN113109518B (en) | 2021-04-23 | 2021-04-23 | Gas water content detection device of sulfur hexafluoride circuit breaker |
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| CN113109518B CN113109518B (en) | 2022-07-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115406851A (en) * | 2022-10-31 | 2022-11-29 | 广东惠丰达电气设备有限公司 | High-precision gas component detection device and detection method based on spectral measurement |
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