CN207067351U - A kind of device for being used to detect the reliability of mine anti-explosion electric switch - Google Patents
A kind of device for being used to detect the reliability of mine anti-explosion electric switch Download PDFInfo
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- CN207067351U CN207067351U CN201721044550.9U CN201721044550U CN207067351U CN 207067351 U CN207067351 U CN 207067351U CN 201721044550 U CN201721044550 U CN 201721044550U CN 207067351 U CN207067351 U CN 207067351U
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- switch
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- detect
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Abstract
The utility model discloses a kind of device for being used to detect the reliability of mine anti-explosion electric switch, belong to electrical equipment detection technique field.Including data acquisition structure, three-phase switching switch, protective resistance, rheostat, primary cut-out, vacuum circuit breaker, transformer, voltage switching structure, closing protective structure and the trial target test position for wiring explosion-proof electrification switch to be detected, primary cut-out, vacuum circuit breaker, transformer, voltage switching structure, closing protective structure and trial target test position are sequentially arranged between power line and ground wire by triple line, trial target is tested position and is connected by switching the single-phase end of switch with three-phase with protective resistance and rheostatic phase line, triple line connection between the three phase terminals and voltage switching structure and closing protective structure of three-phase switching switch, the input of transformer, the input of trial target test position or the output end of trial target test position are provided with adjustable impedance, data acquisition structure is used to detect explosion-proof electrification to be measured switch.
Description
Technical field
The utility model belongs to electrical equipment detection technique field, more particularly to a kind of electrically to be opened for detecting mine anti-explosion
The device of the reliability of pass.The present apparatus disclosure satisfy that the onoff for the contactor or breaker that nominal parameter is 1140V, 630A
It is required that meet standard MT/T661, MT871 and GB14048.
Background technology
Mine anti-explosion electric switch is under non-normal condition（Such as short circuit）Also it should be able to connect or breaking current, exchange break-make
Experiment is exactly to be carried out under the shorting system state of simulation, to examine the reliability of Switching Power Supply.It is electrical equipment to exchange make-break capacity
One of most important index of product, indicate the technical merit of product.But Large Copacity exchange Breaking Capacity Test device has
The features such as system is huge, and the input of human and material resources and fund is huge, and process is tested to having destructiveness by test agent, do not have
There is repeatability, test period is extremely short, and accurately and reliably the various data difficulty during captive test are very big, it is desirable to advanced prison
Survey and control system.
The content of the invention
In order to solve the above problems, the utility model embodiment provides a kind of for detecting mine anti-explosion electric switch
The device of reliability, the apparatus structure is simple, meets examination criteria in the case of low input.The technical scheme is as follows：
The utility model embodiment provides a kind of device for being used to detect the reliability of mine anti-explosion electric switch, the dress
Put including data acquisition structure, three-phase switching switch 9, protective resistance 10, rheostat 11, primary cut-out 2, vacuum circuit breaker 3,
Transformer 4, voltage switching structure 5, closing protective structure 6 and the trial target for wiring explosion-proof electrification switch to be detected test position
8, the primary cut-out 2, vacuum circuit breaker 3, transformer 4, voltage switching structure 5, closing protective structure 6 and trial target test
Position 8 is sequentially arranged between power line 1 and ground wire 16 by triple line, and the trial target test position 8 passes through with protective resistance 10
It is connected with the phase line of rheostat 11 with the single-phase end of three-phase switching switch 9, the three phase terminals and voltage of the three-phase switching switch 9
Triple line connection between transformational structure 5 and closing protective structure 6, input, the trial target of the transformer 4 test position 8
The output end of input or trial target test position 8 is provided with adjustable impedance 7, and the data acquisition structure tests the phase of position 8 with trial target
The triple line connect is connected to detect explosion-proof electrification to be detected switch.
Wherein, the power line 1 in the utility model embodiment is 10KV power networks.
Wherein, the voltage switching structure 5 in the utility model embodiment includes voltage conversion circuit and △-Y change-over circuits.
Wherein, the closing protective structure 6 in the utility model embodiment includes the protection switch and closing switch of series connection, institute
State protection switch to be connected with data acquisition structure for 10KV vacuum circuit breakers and its control terminal, the closing switch is to open automatically
Close, electromagnetic contactor or phase selection switch.
Wherein, the data acquisition structure in the utility model embodiment includes programmable controller 15, data processing module
14th, Hall element 12 and current detection circuit 13, the Hall element 12 and current detection circuit 13 test the phase of position 8 with trial target
The triple line connect is connected and is connected by data processing module 14 with programmable controller 15.
Further, in the utility model embodiment, detect electric current be more than or equal to 30KA when, the transformer 4 it is defeated
Enter end and be provided with adjustable impedance 7；When detection electric current is less than 30KA, the input or output end of the trial target test position 8 are provided with
Adjustable impedance 7.
The beneficial effect brought of technical scheme that the utility model embodiment provides is：The utility model embodiment provides
A kind of device for being used to detect the reliability of mine anti-explosion electric switch, the apparatus structure is simple, is accorded with the case of low input
Standardization MT/T661, MT871 and GB14048, and will not be to being damaged by test agent；Meanwhile data parameters obtain simply.
Brief description of the drawings
Fig. 1 is the original for being used to detect the device of the reliability of mine anti-explosion electric switch that the utility model embodiment provides
Manage block diagram；
Fig. 2 is the theory diagram for the data acquisition structure that the utility model embodiment provides.
In figure：1 power line, 2 primary cut-outs, 3 vacuum circuit breakers, 4 transformers, 5 voltage switching structures, 6 closing protectives
Structure, 7 adjustable impedances, 8 trial targets test position, 9 three-phases switching switch, 10 protective resistances, 11 rheostats, 12 Hall elements, 13
Current detection circuit, 14 data processing modules, 15 programmable controllers, 16 ground wires.
Embodiment
It is new to this practicality below in conjunction with accompanying drawing to make the purpose of this utility model, technical scheme and advantage clearer
Type is described in further detail.
Referring to Fig. 1, the utility model embodiment provides a kind of reliability for being used to detect mine anti-explosion electric switch
Device, the device include data acquisition structure, three-phase switching switch 9, protective resistance 10, rheostat 11, primary cut-out 2, true
Empty breaker 3, transformer 4, voltage switching structure 5, closing protective structure 6 and the examination for wiring explosion-proof electrification switch to be detected
Test product test position 8 etc..Wherein, data acquisition structure is used to being controlled whole device and gathering sensor and detection circuit obtains
The electric parameter taken, three-phase switching switch 9 are used to gate the phase line in triple line, and voltage switching structure 5 is used for becoming pressure amplitude
Degree is controlled, and closing protective structure 6 is used to realize the disjunction to circuit and closing function, primary cut-out 2 and vacuum circuit breaker
Device 3 is used to protect high voltage side of transformer and break-make, and trial target test position 8 is used to install mine explosion-proof switch to be detected,
It includes bearing, the fixed structure on bearing and multiple binding posts, more piece-root grafting lines and/or jack, and bearing inside is as needed
Connected up.Wherein, primary cut-out 2, vacuum circuit breaker 3, transformer 4, voltage switching structure 5, closing protective structure 6 and examination
Test product test position 8 to be sequentially arranged between power line 1 and ground wire 16 by triple line, trial target is tested position 8 and passed through with protection electricity
The phase line of resistance 10 and rheostat 11 is connected with the single-phase end of three-phase switching switch 9（Phase line is connected with trial target test position 8
This one end is detachably arranged in corresponding jack preferably by probe）As short-circuit test circuit, three-phase switching switchs the three of 9
Triple line connection between phase end and voltage switching structure 5 and closing protective structure 6（Pass through triple line）.The input of transformer 4
The output end at end, the input of trial target test position 8 or trial target test position 8 is provided with the work(that adjustable impedance 7 is used for adjustment circuit
Rate factor and size of current etc..The triple line that data acquisition structure connects with trial target test position 8 is connected to survey trial target
Explosion-proof electrification to be detected switch on examination position 8 is detected；Further, the control terminal of primary cut-out 2, vacuum circuit breaker 3
Control terminal, the control terminal of the control terminal of voltage switching structure 5 and closing protective structure 6 is connected with reality with data acquisition structure
Existing Automated condtrol, naturally it is also possible to be directly controlled by switch or potentiometer.
Wherein, the power line 1 in the utility model embodiment is 10KV power networks（Mining area is general）.The present embodiment is with 10KV electricity
Net is directly accessed as experimental power supply, tests capacity（The three-phase shortcircuit capacity of testing transformer low-pressure side）P=1.732U*I, its
Middle U is step down side voltage, and I is test current, then P=1.732*1140*15=29.62MVA, takes 30MVA.Power supply capacity
Pmin=P/10%=300MVA, then electric substation's transformer short-circuit capacity be at least 300MVA.
Wherein, the transformer in the utility model embodiment is impact transformer, is a kind of strong special change of overload capacity
Depressor, except must be resistant under short-circuit condition and repeatedly under short time duty in addition to caused fuel factor and electric drive effect, also have
It is standby：1 multi-gear adjustment ability, 2, impedance voltage drop it is smaller than general transformer, generally it is small by 2%, 3, power factor (PF) be usually more than 0.2.Should
Transformer rated capacity can be estimated by the following manner：Pk=P/Kp, Kp take 12, then PkThe MVA of=29.62MVA/12=2.47, this reality
Apply example and take 2.5MVA.
Wherein, the voltage switching structure 5 in the utility model embodiment includes voltage conversion circuit and △-Y change-over circuits.
Specifically, in order to meet the requirement of different tests voltage, the voltage regulating mode of usual transformer has：Low pressure winding is by 2-4 winding
Composition, changed and △-Y change-over circuits by low pressure winding series and parallel voltage dress, 2-4 times of pressure-adjustable；High pressure winding has multiple take out
Head, can pressure regulation within the specific limits by changing high-voltage tap changer（Such as ± 10%, ± 30% or ± 50%）.Can in the present embodiment
Voltage switching structure is combined as using photovoltaic conversion circuit and △-Y change-over circuits so that system can export a variety of different electricity
Press grade.
Wherein, the closing protective structure 6 in the utility model embodiment includes the protection switch and closing switch of series connection, protects
Shield switch is 10KV vacuum circuit breakers and its control terminal and data acquisition structure（The execution unit that programmable controller 15 exports
（Such as relay））Connection, closing switch are automatic switch, electromagnetic contactor or phase selection switch（Needing the condition of phase selection
Under）.
Specifically, the main function of the protection switch in the present apparatus is：1st, for frequently switching on or disjunction experiment power supply, 2,
For when being unable to disjunction test current if there is test product during experiment, to cut off this electric current in time；3rd, for testing
Circuit is when occurring short trouble, for this fault current of instantaneous disjunction.Protection switch must not only have general automatic switch
Function, moreover it is possible to be resistant to the big test current of certain time by with can reliable disjunction hookup may occur most
Serious fault current.To ensure the safe and reliable of the present apparatus, 10KV vacuum circuit breakers may be selected as protection switch（With that can compile
The execution unit connection that range controller 15 exports）, installed in the high-pressure side of transformer, identification is realized by data acquisition structure
The ability of fault current and normal assays electric current, can selectively it act, guarantee test is normally carried out.
When carrying out disjunction experiment, slowdown monitoring switch to be checked need to be closed in advance, and test current is connected by a closing switch, this conjunction
Lock switch only requires the ability for possessing the experiment electric current that can reliably connect maximum possible, completes combined floodgate task.Tested as disjunction
The task of electric current is served as by protection switch.Discounting for phase selection, there is oneself of enough make-break capacities from general
Dynamic switch or electromagnetic contactor are as closing switch.If requiring phase selection when closing a floodgate, phase selection must be used to switch.
If the capacity of experimental rig is little, in order to simplification can also be not provided with closing switch, by high reliability switch simultaneously complete to protect
Shield and combined floodgate task.
Wherein, referring to Fig. 2, the data acquisition structure in the utility model embodiment includes programmable controller 15, data
Processing module 14（Including filtering, amplifying and analog-to-digital conversion unit etc.）, Hall element 12, current detection circuit 13（Can also be straight
Connect and use current sensor）With multiple relays etc., its structure is similar with common electrical detection facility, is the technology of this area
Known to personnel, corresponding commercially available prod can be directly bought.Wherein, Hall element 12 and current detection circuit 13（It is connected to experiment
Product test the output end of position 8）The triple line to connect with trial target test position 8 is connected and by data processing module 14 and programmable control
Device 15 processed connects.
The Control ＆ data acquisition of the present apparatus mainly realized by programmable controller, and can be by corresponding relay protection structure
Protected.Data collecting system will consider voltage, electric current, frequency, power factor (PF), channel band, port number, storage deeply
Many factors such as degree, arc time, anti-interference, operation and price.
Further, in the utility model embodiment, when detection electric current is more than or equal to 30KA, the input of transformer 4
Provided with adjustable impedance 7；When detection electric current is less than 30KA, the input or output end of trial target test position 8 are provided with adjustable impedance
7。
Specifically, according to the requirement of test current and power factor (PF), respective impedance should be accessed.Common practices is：Electric current is big
High pressure impedance is added when equal to 30KA in transformer inputs to be adjusted, when electric current is less than 30KA then after transformer and position
In the front end of trial target test position or rear end accesses preposition impedance or rearmounted impedance is adjusted.By simultaneously adjust reactance value and
Resistance value adjusts the purpose of experiment electric current and power factor (PF) to reach.
In addition, in order to ensure the reliability of whole device and accuracy, can also be by the following means：
1st, the test loop of transformer rear end is as far as possible short, to reduce impedance loop.
2nd, joint connection request is reliable and resistance is smaller, is typically welded using V-type.
3rd, wiring should use low inductance arrangement.
The utility model embodiment provides a kind of device for being used to detect the reliability of mine anti-explosion electric switch, the dress
Put simple in construction, standard MT/T661, MT871 and GB14048 are met in the case of low input, and will not be to being made by test agent
Into destruction；Meanwhile data parameters obtain simply.
Preferred embodiment of the present utility model is the foregoing is only, it is all in this practicality not to limit the utility model
Within new spirit and principle, any modification, equivalent substitution and improvements made etc., guarantor of the present utility model should be included in
Within the scope of shield.
Claims (6)
1. it is a kind of be used for detect mine anti-explosion electric switch reliability device, it is characterised in that including data acquisition structure,
Three-phase switching switch (9), protective resistance (10), rheostat (11), primary cut-out (2), vacuum circuit breaker (3), transformer
(4), voltage switching structure (5), closing protective structure (6) and the trial target for wiring explosion-proof electrification switch to be detected test position
(8), the primary cut-out (2), vacuum circuit breaker (3), transformer (4), voltage switching structure (5), closing protective structure (6)
And trial target test position (8) is sequentially arranged between power line (1) and ground wire (16) by triple line, the trial target tests position
(8) the single-phase end for switching switch (9) with three-phase by the phase line with protective resistance (10) and rheostat (11) is connected, described
The three phase terminals of three-phase switching switch (9) are connected with the triple line between voltage switching structure (5) and closing protective structure (6), institute
The output end of the input of transformer (4), the input of trial target test position (8) or trial target test position (8) is stated provided with adjustable
Impedance (7), the triple line that the data acquisition structure connects with trial target test position (8) are connected to explosion-proof electrification to be detected
Switch is detected.
2. the device according to claim 1 for being used to detect the reliability of mine anti-explosion electric switch, it is characterised in that institute
It is 10KV power networks to state power line (1).
3. the device according to claim 1 for being used to detect the reliability of mine anti-explosion electric switch, it is characterised in that institute
Stating voltage switching structure (5) includes voltage conversion circuit and △-Y change-over circuits.
4. the device according to claim 1 for being used to detect the reliability of mine anti-explosion electric switch, it is characterised in that institute
State closing protective structure (6) include series connection protection switch and closing switch, the protection switch be 10KV vacuum circuit breakers and
Its control terminal is connected with data acquisition structure, and the closing switch is automatic switch, electromagnetic contactor or phase selection switch.
5. the device according to claim 1 for being used to detect the reliability of mine anti-explosion electric switch, it is characterised in that institute
Stating data acquisition structure includes programmable controller (15), data processing module (14), Hall element (12) and current detecting electricity
The triple line that road (13), the Hall element (12) and current detection circuit (13) connect with trial target test position (8) is connected simultaneously
It is connected by data processing module (14) with programmable controller (15).
6. the device according to claim 1 for being used to detect the reliability of mine anti-explosion electric switch, it is characterised in that
When detection electric current is more than or equal to 30KA, the input of the transformer (4) is provided with adjustable impedance (7)；It is less than in detection electric current
During 30KA, the input or output end of trial target test position (8) are provided with adjustable impedance (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721044550.9U CN207067351U (en) | 2017-08-21 | 2017-08-21 | A kind of device for being used to detect the reliability of mine anti-explosion electric switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721044550.9U CN207067351U (en) | 2017-08-21 | 2017-08-21 | A kind of device for being used to detect the reliability of mine anti-explosion electric switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207067351U true CN207067351U (en) | 2018-03-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721044550.9U Expired - Fee Related CN207067351U (en) | 2017-08-21 | 2017-08-21 | A kind of device for being used to detect the reliability of mine anti-explosion electric switch |
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| Country | Link |
|---|---|
| CN (1) | CN207067351U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114415625A (en) * | 2021-12-22 | 2022-04-29 | 中煤科工集团沈阳研究院有限公司 | Intelligent inspection system and method for safety parameters of mine explosion-proof electrical appliance |
-
2017
- 2017-08-21 CN CN201721044550.9U patent/CN207067351U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114415625A (en) * | 2021-12-22 | 2022-04-29 | 中煤科工集团沈阳研究院有限公司 | Intelligent inspection system and method for safety parameters of mine explosion-proof electrical appliance |
| CN114415625B (en) * | 2021-12-22 | 2024-04-19 | 中煤科工集团沈阳研究院有限公司 | Intelligent inspection system and method for mine explosion-proof electrical appliance safety parameters |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180302 Termination date: 20190821 |
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| CF01 | Termination of patent right due to non-payment of annual fee |