CN208384081U - A kind of experimental rig for the research of environment-friendly type gas arc extinction performance - Google Patents
A kind of experimental rig for the research of environment-friendly type gas arc extinction performance Download PDFInfo
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- CN208384081U CN208384081U CN201820959966.1U CN201820959966U CN208384081U CN 208384081 U CN208384081 U CN 208384081U CN 201820959966 U CN201820959966 U CN 201820959966U CN 208384081 U CN208384081 U CN 208384081U
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Abstract
A kind of experimental rig for the research of environment-friendly type gas arc extinction performance of the utility model, including main casing, spout, cylinder, piston, piston support rod, lower cover plate moving contact, static contact, motor pull rod, pull rod, insulated pull rod and driving motor, the utility model proposes experimental rig gas consumption is considerably reduced during being tested relative to breaker, to reduce experimentation cost；The utility model proposes experimental rig in each components are common and easy processing, it is convenient for disassembly and assembly, be convenient for later maintenance；The utility model experimental rig solves the problems, such as to do experiment using molded breaker restricts pilot project expansion to a certain extent, and the utility model experimental rig can carry out simultaneously multiple pilot projects, to adapt to the requirement of different tests project.
Description
Technical field
The utility model belongs to high-tension switch gear technical field, in particular to a kind of to be used for environment-friendly type gas arc extinction performance
The experimental rig of research.
Background technique
With the development of power technology, SF6Electrical equipment is widely used, SF6With very strong electronegativity, have
Excellent arc extinction performance and dielectric strength, heat-conductive characteristic is good, is easy compound and will not decomposite carbon particle.But high and cold
Area, SF6Gas is easy liquefaction, while SF6It is a kind of very high gas of greenhouse effect value, effect on environment is very big.Therefore seek
SF6Substituting gas has been inevitable trend.
Currently, for SF6The research emphasis of substitution gas is mainly its insulation performance and arc extinction performance, and for arc-extinguishing
The experimental study majority of energy is to access breaker in the dedicated test loop in experiment station to carry out.Due to current gas circuit breaker electric
Press grade generally all in 40.5kV or more, breaker body is larger, and gas consumption consequently also can be larger during test, this undoubtedly can
Increase experimentation cost.The constraint that will receive a variety of conditions in experiment station is tested also in dedicated test loop simultaneously, for
It is very unfavorable for experimental study.In addition to this, it is done experiment using molded breaker and also constrains examination to a certain extent
The expansion for testing project is unfavorable for multiple pilot projects while carrying out.
Utility model content
In view of the problems of the existing technology, the utility model provide it is a kind of for environment-friendly type gas arc extinction performance research
Experimental rig realizes SF6The experimental study for substituting gas arc extinction performance, simplifies test loop, greatly reduces and use gas
Amount, has saved experimentation cost.
To achieve the above objectives, the present invention adopts the following technical solutions:
A kind of experimental rig for the research of environment-friendly type gas arc extinction performance, including steelframe, cylinder and charging unit, it is described
Steelframe top is provided with lower cover plate, and bottom end is provided with dynamic sealing seat at the lower cover plate center, sets in the dynamic sealing seat groove
It is equipped with dynamic sealing seat ring, and is against lower cover plate lower surface at the top of dynamic sealing seat ring, air inlet/outlet, institute are offered on the lower cover plate
It states and is welded with nut at the top of lower cover plate, and nut is located at lower cover plate through-hole surrounding, is bolted with main casing at the top of the lower cover plate, institute
It states main casing middle and upper part sidewall symmetry and is welded with lateral shell, the lateral shell end is provided with lateral housing cover, described
It is bolted with disc insulator at the top of main casing, the steelframe bottom is fixedly installed with driving motor, the driving motor output shaft
End and motor connection lever big end are rotatablely installed, and the motor connection lever small end and connecting rod one end are rotatablely installed, the connecting rod other end
It is connect with insulated pull rod one end, and insulated pull rod sequentially passes through dynamic sealing seat ring and lower cover plate through-hole and extends in main casing
Chamber, the cylinder are located at main casing intracoelomic cavity, and the cylinder end is provided with pull rod bracket, offer on the pull rod bracket and spiral shell
Female concentric through-hole, the through-hole wall are equipped with sliding bearing, and the insulated pull rod other end is screwed onto pull rod bracket bottom
End middle part, the cylinder inner wall are slidably fitted with piston, and the piston bottom end is fixedly installed with piston support rod, and piston supports
Bar is fixedly mounted through sliding bearing and with nut, and the cylinder inner wall piston tip is fixedly installed with moving contact support plate, institute
It states and is bolted with moving contact at the top of moving contact support plate, the cylinder head is bolted with spout, and the disc insulator bottom end is fixed
Static contact fixing seat is installed, and is extended in disc insulator through-hole at the top of static contact fixing seat, the static contact fixing seat
Bottom is fixedly installed with static contact, and static contact is located at main casing intracoelomic cavity, is fixedly installed with high pressure at the top of the disc insulator
Conducting rod, and high-voltage conductive rod bottom extends in disc insulator through-hole and fits closely at the top of static contact fixing seat；
The charging unit output end is electrically connected with charge switch, after the charge switch output end is in parallel with charging capacitor
It is electrically connected reactance and sensor three, the reactance is electrically connected closing switch, and the closing switch is electrically connected the equivalent electricity in circuit
Resistance, the circuit equivalent resistance are electrically connected high-voltage conductive rod, and the high-voltage conductive rod is electrically connected sensor one, the sensor one
It is electrically connected oscillograph, three output end of sensor is electrically connected lower cover plate and oscillograph, the lower cover plate electrical connection sensing
Device two, two output end of sensor are electrically connected oscillograph, and the driving motor is electrically connected with driving motor control system.
The driving motor is set as limited rotary angle permanent magnet brshless DC motor.
The main casing is the open hollow circuit cylinder cylinder of upper and lower ends, and described lateral shell one end is open, the other end
It is closed hollow circuit cylinder cylinder.
The point-to-point speed of the insulated pull rod is 3.2m/s.
The length of the motor connection lever and connecting rod ratio is 1:2.
The main casing height is 480mm, diameter 325mm, and internal total gas capacity is 40L.
The cylinder bore diameter is set as 90mm, and the cylinder gas capacity is 0.9L.
The moving contact, static contact and spout use the standard component of 40.5kV/31.5kA self-blasting circuit breaker, described dynamic
Contact outer diameter is 25mm, and the static contact internal diameter is 25.2mm, and the two uses plug-in type docking mode, and the moving contact is mechanical
Characteristic design parameter: stroke 96mm is opened away from 60mm, excess of stroke 36mm.
The utility model has the beneficial effects that
1, the utility model proposes experimental rig use is considerably reduced during being tested relative to breaker
Tolerance, to reduce experimentation cost.
2, the utility model proposes experimental rig in each components are common and easy processing, it is convenient for disassembly and assembly, be convenient for the later period
Maintenance.
3, the utility model experimental rig solves to do experiment using molded breaker restricts examination to a certain extent
The problem of project is expanded is tested, the utility model experimental rig can carry out simultaneously multiple pilot projects, to adapt to different tests item
Purpose requirement.
Detailed description of the invention
Fig. 1 is the utility model experimental rig structural schematic diagram；
Fig. 2 is the utility model test principle figure；
Fig. 3 is the utility model experimental rig arc extinguishing process schematic；
Fig. 4 is the utility model driving motor control system control flow chart；
Fig. 5 is the utility model controlling test flow chart；
1- steelframe, 2- cylinder, 3- lower cover plate, 4- dynamic sealing seat, 5- dynamic sealing seat ring, 6- air inlet/outlet, 7- nut, 8- master
Shell, the side 9- connect to shell, the side 10- to housing cover, 11- disc insulator, 12- driving motor, 13- motor connection lever, 14-
Bar, 15- insulated pull rod, 16- pull rod bracket, 17- sliding bearing, 18- piston, 19- piston support rod, 20- moving contact support plate,
21- moving contact, 22- spout, 23- static contact fixing seat, 24- static contact, 25- high-voltage conductive rod, 26- charging unit, 27- oscillography
Device, 28- sensor one, 29- sensor two, 30- sensor three, 31- driving motor control system, S- charge switch, C- charging
Capacitor, L- reactance, HK- closing switch, the circuit R- equivalent resistance.
Specific embodiment
Below with reference to embodiment, the utility model is described in further detail.
As depicted in figs. 1 and 2, a kind of experimental rig for the research of environment-friendly type gas arc extinction performance, including steelframe 1, gas
Cylinder 2 and charging unit 26,1 top of steelframe are provided with lower cover plate 3, and bottom end is provided with dynamic sealing at 3 center of lower cover plate
Seat 4 is provided with dynamic sealing seat ring 5 in 4 groove of dynamic sealing seat, and is against 3 lower surface of lower cover plate at the top of dynamic sealing seat ring 5,
Dynamic sealing seat ring 5 plays the role of guaranteeing the air-tightness between insulated pull rod 15 and lower cover plate 3, offers on the lower cover plate 3
Air inlet/outlet 6 is welded with nut 7 at the top of the lower cover plate 3, and nut 7 is located at 3 through-hole surrounding of lower cover plate, and the lower cover plate 3 pushes up
Portion is bolted with main casing 8, and the 8 middle and upper part sidewall symmetry of main casing is welded with lateral shell 9, and lateral 9 end of shell is set
It is equipped with lateral housing cover 10, lateral shell 9 observes internal arc extinguishing process first is that do glass vision panel, second is that by beating
It opens lateral housing cover 10 and is put into temperature sensor and pressure sensor into main casing 8, be bolted with basin at the top of the main casing 8
Formula insulator 11,1 bottom of steelframe are fixedly installed with driving motor 12, and the driving motor 12 exports shaft end and motor connects
The rotational installation of 13 big end of bar, 13 small end of motor connection lever and 14 one end of connecting rod are rotatablely installed, 14 other end of connecting rod and absolutely
The connection of 15 one end of edge pull rod, and insulated pull rod 15 sequentially passes through dynamic sealing seat ring 5 and 3 through-hole of lower cover plate and extends to main casing 8
Inner cavity, the cylinder 2 are located at 8 inner cavity of main casing, and 2 bottom end of cylinder is provided with pull rod bracket 16, on the pull rod bracket 16
The through-hole concentric with nut 7 is offered, the through-hole wall is equipped with sliding bearing 17,15 other end spiral shell of insulated pull rod
It connects in 16 center bottom of pull rod bracket, 2 inner wall of cylinder is slidably fitted with piston 18, and 18 bottom end of piston is fixedly installed with
Piston support rod 19, piston support rod 19 are set as four, when 2 entirety of cylinder moves downward, and the gas in cylinder 2 is produced by compression
Raw pressure, when piston support rod 19, which is set as four, prevents pressure excessive, 19 intensity of piston support rod not enough occurs bending and deformation
Phenomenon, and piston support rod 19 is fixedly mounted through sliding bearing 17 and with nut 7,2 inner wall piston of cylinder, 18 top is solid
Dingan County is equipped with moving contact support plate 20, is bolted with moving contact 21 at the top of the moving contact support plate 20, is spirally connected at the top of the cylinder 2
There is spout 22,11 bottom end of disc insulator is fixedly installed with static contact fixing seat 23, and prolongs at the top of static contact fixing seat 23
It extends in 11 through-hole of disc insulator, 23 bottom of static contact fixing seat is fixedly installed with static contact 24, and static contact 24
High-voltage conductive rod 25 is fixedly installed at the top of 8 inner cavity of main casing, the disc insulator 11, and 25 bottom of high-voltage conductive rod is prolonged
Extend in 11 through-hole of disc insulator with fitted closely at the top of static contact fixing seat 23；
26 output end of charging unit is electrically connected with charge switch S, the charge switch S output end and charging capacitor C
Reactance L and sensor 3 30 are electrically connected after parallel connection, the reactance L is electrically connected closing switch HK, the closing switch HK electricity
Link circuit equivalent resistance R, the circuit equivalent resistance R are electrically connected high-voltage conductive rod 25, and the high-voltage conductive rod 25 is electrically connected
Sensor 1, the sensor 1 are electrically connected oscillograph 27, and 3 30 output end of sensor is electrically connected lower cover plate 3
With oscillograph 27, the lower cover plate 3 is electrically connected sensor 2 29, and 2 29 output end of sensor is electrically connected oscillograph 27, institute
Driving motor 12 is stated to be electrically connected with driving motor control system 31.
The driving motor 12 is set as limited rotary angle permanent magnet brshless DC motor, and driving motor 12 is set as finite angle
What permanent-magnet brushless DC electric machine can make insulated pull rod 15 moves up and down distance controlling in the range of requiring.
The main casing 8 is the open hollow circuit cylinder cylinder of upper and lower ends, and described lateral 9 one end of shell is opening, another
End is closed hollow circuit cylinder cylinder.
The point-to-point speed of the insulated pull rod 15 is 3.2m/s.
The length ratio of the motor connection lever 13 and connecting rod 14 is 1:2.
8 height of main casing is 480mm, diameter 325mm, and internal total gas capacity is 40L.
2 internal diameter of cylinder is set as 90mm, and 2 gas capacity of cylinder is 0.9L.
The moving contact 21, static contact 24 and spout 22 use the standard component of 40.5kV/31.5kA self-blasting circuit breaker,
21 outer diameter of moving contact is 25mm, and 24 internal diameter of static contact is 25.2mm, and the two uses plug-in type docking mode, described
21 mechanical property design parameter of moving contact: stroke 96mm is opened away from 60mm, excess of stroke 36mm.
A kind of test method for the research of environment-friendly type gas arc extinction performance, it is arc-extinguishing for environment-friendly type gas using one kind
The experimental rig that can be studied, includes the following steps,
Test operation is carried out in the test loop of 1.6kV/1.5kA, controlling test process as shown in figure 5,
Step 1 verifies experimental rig driving motor control system 31, and driving motor control system 31 is mainly wrapped
21 velocity checking circuits of charging capacitor C charge-discharge circuit, inversion isolated drive circuit and moving contact are included, it is made to meet test process
Required conjunction point operation requires, and 12 control system flow chart of driving motor is as shown in Figure 4；
Step 2,3 junction of disc insulator 11, main casing 8 and lower cover plate, main casing 8 and the side of checkout facility device
To moving between 9 commissure of shell, lateral shell 9 and lateral 10 junction of housing cover and lower cover 3 and insulated pull rod 15
Air-tightness at sealing, by air inlet/outlet 6 to being filled with gas to 0.5Mpa in the main casing 8 and lateral shell 9；Main casing
8 and lateral shell 9 in the gas that is filled with N may be configured as according to different pilot projects2、C4F7N or CF3I environment-friendly type gas；
Step 3 adjusts the switching parameter in test loop, and experimental rig is initially "on" position, adjusts closing switch HK
To gate-dividing state；
Step 4, first calling charging capacitor C voltage detect subprogram, detect to charging capacitor C voltage, judgement is filled
Whether electricity is completed, and when reaching 1.6kv, is directly entered step 5；Controller as not up to 1.6kv, in charging unit 26
Charge command is exported, IGBT conducting of charging is made, charging capacitor C is carried out to charge to 1.6kv, charge closing switch S, while will drive
Dynamic electric machine control system 31 is set as operational ready state；
The capacitance and inductance value of major loop calculate according to the following formula:
Wherein: supply frequency f=50Hz, supply voltage u=1.6kV, source current i=1.5kA, simultaneous formula (1) and
Main capacitance C=4222 μ F, reactance L=2402 μ H can be obtained in formula (2)；
Step 5 calls shutting-brake control subprogram, utility model device when closing switch HK receives switching signal
Feed motion is completed according to given curve, and judges to close a floodgate and whether succeed, when to reach closing position, failure of closing a floodgate is concurrent
Alarm signal out, return step four, when reaching closing position, combined floodgate terminates；Separating brake switch receives sub-gate signal at this time, adjusts
With separating brake control subprogram, realize utility model device according to given curve complete separating brake movement, and judge separating brake whether at
Function successfully provides open position prompt, and separating brake terminates, and executes step 6, does not reach open position, separating brake failure also after separating brake
And alarm signal is issued, return step four, as shown in figure 3, the concrete operations of this step are as follows:
When closing switch HK receives combined floodgate order, closing switch HK executes closing operation, and whole test loop is at this time
The virtual value of short-circuit condition, first wave of test loop electric current is 1.5kA, and after prefixed time interval, driving motor 12 is connect
The separating brake instruction of the sending of driving motor control system 31 is received, driving motor 12 drives motor connection lever 13 and connecting rod 14 to rotate, into
And realize that insulated pull rod 15 drives cylinder 2 and moving contact 21 to move down, the gas between piston 18 and cylinder 2 is gradually pressed
Contracting generates hyperbar；When moving contact 21 and static contact 24 separate, electric arc, gas are generated between moving contact 21 and static contact 24
High pressure gas in cylinder 2 has certain air-blowing to act on electric arc by spout 22, with the continuation that separating brake acts, 21 He of moving contact
The distance between static contact 24 is gradually increased, and electric arc is gradually elongated, and the effect of air-blowing at this time becomes more and more acutely, final electric arc
Extinguish in circuital current zero crossing, completes an arc extinguishing process；
Step 6 can measure the arc voltage u during experimental rig arcing by sensor 1 and sensor 2 29
Waveform, the waveform of the arc current i during arcing, sensor 1, sensor 2 29 can be measured by sensor 3 30
Data measured is transferred to oscillograph 27 with sensor 3 30, is saved after the data that confirmation oscillograph 27 acquires are accurate, behaviour
Make discharge switch and discharge treatment, off-test are carried out to main capacitance；
Step 7 counts the waveform of the collected arc current of oscillograph 27 and arc voltage by MATLAB software
According to processing, concrete processing procedure is as follows:
Mayr dynamic arc model are as follows:Being deformed can obtain:
Wherein: u- arc voltage, i- arc current, g- electric arc conductance, t- time, θ-arc duration constant, N- electric arc dissipate
Power is sent out, corresponding arc duration constant θ can be obtained and electric arc distributes power N, can judge the arc extinguishing of the gas accordingly
Performance.
Claims (8)
1. a kind of experimental rig for the research of environment-friendly type gas arc extinction performance, which is characterized in that including steelframe, cylinder and charging
Device, the steelframe top are provided with lower cover plate, and bottom end is provided with dynamic sealing seat, the dynamic sealing seat at the lower cover plate center
Be provided with dynamic sealing seat ring in groove, and be against lower cover plate lower surface at the top of dynamic sealing seat ring, offered on the lower cover plate into
Gas outlet, the lower cover plate top is welded with nut, and nut is located at lower cover plate through-hole surrounding, is bolted at the top of the lower cover plate
Main casing, main casing middle and upper part sidewall symmetry are welded with lateral shell, and the lateral shell end is provided with lateral shell
Cover board, the main casing top are bolted with disc insulator, and the steelframe bottom is fixedly installed with driving motor, the driving electricity
Machine exports shaft end and motor connection lever big end is rotatablely installed, and the motor connection lever small end and connecting rod one end are rotatablely installed, the company
The bar other end is connect with insulated pull rod one end, and insulated pull rod sequentially passes through dynamic sealing seat ring and lower cover plate through-hole and extends to master
Housing cavity, the cylinder are located at main casing intracoelomic cavity, and the cylinder end is provided with pull rod bracket, opens up on the pull rod bracket
There is the through-hole concentric with nut, the through-hole wall is equipped with sliding bearing, and the insulated pull rod other end is screwed onto pull rod
Bracket center bottom, the cylinder inner wall are slidably fitted with piston, and the piston bottom end is fixedly installed with piston support rod, and living
Support rod is filled in through sliding bearing and is fixedly mounted with nut, and the cylinder inner wall piston tip is fixedly installed with moving contact support
Plate, the moving contact support plate top are bolted with moving contact, and the cylinder head is bolted with spout, the disc insulator bottom end
It is fixedly installed with static contact fixing seat, and is extended in disc insulator through-hole at the top of static contact fixing seat, the static contact is solid
Reservation bottom is fixedly installed with static contact, and static contact is located at main casing intracoelomic cavity, is fixedly installed at the top of the disc insulator
High-voltage conductive rod, and high-voltage conductive rod bottom extends in disc insulator through-hole and fits closely at the top of static contact fixing seat；
The charging unit output end is electrically connected with charge switch, after the charge switch output end is in parallel with charging capacitor respectively
It is electrically connected reactor and sensor three, the reactor is electrically connected closing switch, and the closing switch is electrically connected the equivalent electricity in circuit
Resistance, the circuit equivalent resistance are electrically connected high-voltage conductive rod, and the high-voltage conductive rod is electrically connected sensor one, the sensor one
It is electrically connected oscillograph, three output end of sensor is electrically connected lower cover plate and oscillograph, the lower cover plate electrical connection sensing
Device two, two output end of sensor are electrically connected oscillograph, and the driving motor is electrically connected with driving motor control system.
2. a kind of experimental rig for the research of environment-friendly type gas arc extinction performance according to claim 1, it is characterised in that:
The driving motor is set as limited rotary angle permanent magnet brshless DC motor.
3. a kind of experimental rig for the research of environment-friendly type gas arc extinction performance according to claim 1, it is characterised in that:
The main casing is the open hollow circuit cylinder cylinder of upper and lower ends, and described lateral shell one end is opening, and the other end is closed
Hollow circuit cylinder cylinder.
4. a kind of experimental rig for the research of environment-friendly type gas arc extinction performance according to claim 1, it is characterised in that:
The point-to-point speed of the insulated pull rod is 3.2m/s.
5. a kind of experimental rig for the research of environment-friendly type gas arc extinction performance according to claim 1, it is characterised in that:
The length of the motor connection lever and connecting rod ratio is 1:2.
6. a kind of experimental rig for the research of environment-friendly type gas arc extinction performance according to claim 1, it is characterised in that:
The main casing height is 480mm, diameter 325mm, and internal total gas capacity is 40L.
7. a kind of experimental rig for the research of environment-friendly type gas arc extinction performance according to claim 1, it is characterised in that:
The cylinder bore diameter is set as 90mm, and the cylinder gas capacity is 0.9L.
8. a kind of experimental rig for the research of environment-friendly type gas arc extinction performance according to claim 1, it is characterised in that:
The moving contact, static contact and spout use the standard component of 40.5kV/31.5kA self-blasting circuit breaker, the moving contact outer diameter
For 25mm, the static contact internal diameter is 25.2mm, and the two uses plug-in type docking mode, the moving contact mechanical property design
Parameter: stroke 96mm is opened away from 60mm, excess of stroke 36mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820959966.1U CN208384081U (en) | 2018-06-21 | 2018-06-21 | A kind of experimental rig for the research of environment-friendly type gas arc extinction performance |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820959966.1U CN208384081U (en) | 2018-06-21 | 2018-06-21 | A kind of experimental rig for the research of environment-friendly type gas arc extinction performance |
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| CN208384081U true CN208384081U (en) | 2019-01-15 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111352027A (en) * | 2020-03-23 | 2020-06-30 | 云南电网有限责任公司电力科学研究院 | Aerify cabinet circuit breaker insulation test device |
| CN112951523A (en) * | 2021-01-19 | 2021-06-11 | 中车株洲电力机车有限公司 | Insulator |
-
2018
- 2018-06-21 CN CN201820959966.1U patent/CN208384081U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111352027A (en) * | 2020-03-23 | 2020-06-30 | 云南电网有限责任公司电力科学研究院 | Aerify cabinet circuit breaker insulation test device |
| CN112951523A (en) * | 2021-01-19 | 2021-06-11 | 中车株洲电力机车有限公司 | Insulator |
| CN112951523B (en) * | 2021-01-19 | 2023-09-05 | 中车株洲电力机车有限公司 | Insulator |
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