CN206848388U - A kind of straight-flow system exchange is scurried into and insulation detection device - Google Patents
A kind of straight-flow system exchange is scurried into and insulation detection device Download PDFInfo
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- CN206848388U CN206848388U CN201720613828.3U CN201720613828U CN206848388U CN 206848388 U CN206848388 U CN 206848388U CN 201720613828 U CN201720613828 U CN 201720613828U CN 206848388 U CN206848388 U CN 206848388U
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- 238000001514 detection method Methods 0.000 title claims abstract description 42
- 238000009413 insulation Methods 0.000 title claims abstract description 20
- 210000005056 cell body Anatomy 0.000 claims description 9
- 238000004804 winding Methods 0.000 claims description 5
- 230000005611 electricity Effects 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 2
- 238000012544 monitoring process Methods 0.000 claims 1
- 238000012360 testing method Methods 0.000 abstract description 9
- 230000000694 effects Effects 0.000 description 3
- 238000007689 inspection Methods 0.000 description 3
- 239000000428 dust Substances 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Abstract
A kind of straight-flow system exchange provided by the utility model is scurried into and insulation detection device,Change the voltage of power supply using transformer,Then variable resistance is serially connected with to the secondary side of transformer,First resistor,Second resistance,It is serially connected with after 3rd resistor series connection between variable resistance and output line,Another termination test position of output line,The straight-flow system of transformer station can be easily detected using the program,A.C. voltmeter is parallel to the primary side and output line of transformer simultaneously,The A.C. voltmeter has display,The magnitude of voltage measured for showing A.C. voltmeter,Technical staff is when testing transformer station direct current system,Output line and the test position of straight-flow system are connected,First resistor or second resistance or 3rd resistor can obtain different resistances from variable resistance series connection,So as to easily detect whether straight-flow system meets the requirements,Relative to prior art,Transformer station direct current system detection is easy to operate,Reduce the labor intensity of technical staff.
Description
Technical field
Controller switching equipment examination instrument is the utility model is related to, more particularly to a kind of exchange of straight-flow system is scurried into and inspection of insulating
Survey device.
Background technology
Transformer station direct current system：It is carry as whole station control, protection, automatics, signal, emergency lighting and direct current
The important load such as oil pump or other direct current generators provides the task of uninterrupted power supply, is indispensable important composition portion of transformer station
Point.
During long-term use, alternating current may scurry into straight-flow system and cause direct current system transformer station direct current system
System failure, in addition, failure common when DC earthing (direct current is directly grounded or resistance to earth declines) and straight-flow system operation,
DC earthing may cause the malfunction of recoil simulator, control loop and protective relaying device, so as to trigger serious accident.
Transformer station direct current system can only be gone to confirm this when checking and accepting according to the delivery test report of producer in the prior art
The quality of function, inspector can not directly safely analog AC scurries into DC case at the scene, to verify having for the function
Effect property and accuracy.
Simultaneously, it is contemplated that check and accept during straight-flow system, in earthing detection functional acceptance, it is necessary to analogue ground situation,
Grounding resistance, but the test resistance that inspector carries are tested in access on feeder line, and often resistance is fixed, and is unfavorable for power transformation and is stood erectly
The examination of streaming system.
The content of the invention
A kind of straight-flow system exchange provided by the utility model is scurried into and insulation detection device, it is intended to overcomes in the prior art
The inconvenient deficiency of transformer station direct current system detection.
In order to solve the above-mentioned technical problem, the utility model adopts the following technical scheme that：A kind of straight-flow system exchange is scurried into
And insulation detection device, including the housing with accommodating chamber and the lid for being fixed on case top lid conjunction accommodating chamber, the accommodating chamber
Interior to be provided with A.C. voltmeter, the A.C. voltmeter includes display, and the lid is provided with display content on observation display
Watch window, the transparent panel of closing watch window is fixed with the lid, the lid is provided with the groove for accommodating transparent panel
Body, the cell body communicate with watch window, also, the depth of the cell body is more than the thickness of transparent panel, is gone back in the accommodating chamber
The transformer that no-load voltage ratio is 220/36 is fixed with, is further fixed on variable resistance in the accommodating chamber, the variable resistance includes
Regulation handle, the hole body for passing through regulation handle is offered on the lid；Be additionally provided with the accommodating chamber first resistor,
Second resistance, 3rd resistor, connected after the first resistor, second resistance, second resistance parallel connection with variable resistance, the change
Depressor includes primary side and secondary side, and the variable resistance is serially connected with the secondary side of transformer, and straight-flow system exchange is scurried into
And insulation detection device also includes power line and output line, after the first resistor, second resistance, 3rd resistor parallel connection with it is variable
Resistor is connected while concatenation with output line, the primary side connection power line of the transformer, is offered away on the housing
String holes, the cable hole are communicated with the accommodating chamber, and the A.C. voltmeter is parallel on power line and output line simultaneously.
A kind of optional scheme, the first resistor, second resistance, 3rd resistor are metalfilmresistor, and described first
The resistance of resistance is 10k Ω, and the resistance of the second resistance is 20k Ω, and the resistance of the 3rd resistor is 30k Ω.Metal film
Resistance has good performance, optimizes the performance of detection means.Detection means is used for the direct current for detecting transformer station
System, limitation first resistor, second resistance, the resistance of 3rd resistor are advantageous to the operation of detection means, optimize detection means
Performance.
A kind of optional scheme, be serially connected between the first resistor and variable resistance control first resistor whether with can
Variohm series connection the first controlling switch, the variable resistance and second resistance between be serially connected with control second resistance whether with
Second controlling switch of variable resistance series connection, control 3rd resistor is serially connected between the variable resistance and 3rd resistor is
No the 3rd controlling switch connected with variable resistance.The setting of first controlling switch, the second controlling switch, the 3rd controlling switch
Allow technical staff to be conveniently adjusted the resistance for the resistance connected with variable resistance, optimize the usability of detection means
Energy.
A kind of optional scheme, the first controlling switch of installation, the second controlling switch, the 3rd are offered on the lid respectively
The pilot hole of controlling switch, first controlling switch, the second controlling switch, the 3rd controlling switch are fixed by screws in institute
State on lid, be equipped with dust-proof cushion between first controlling switch, the second controlling switch, the 3rd controlling switch and lid, institute
Dust-proof cushion is stated to be bonded on the lid.The setting of pilot hole causes the first controlling switch, the second controlling switch, the 3rd control to open
Close easy to operate, optimize the performance of detection means.The setting of dust-proof cushion can be effectively prevented from dust and enter in housing,
Extend the service life of detection means.
A kind of optional scheme, the resistance adjustable range of the variable resistance is 0k Ω to 100k Ω.Variable resistance
With larger adjustable range, the performance of detection means is optimized.
A kind of optional scheme, first fuse, transformer are serially connected between the primary side of the power line and transformer
Secondary side and output line between be serially connected with second fuse.Protection detection is played in the setting of first fuse and second fuse
The effect of device, extend the service life of detection means.
A kind of optional scheme, power switch, the housing are serially connected between the primary side of the power line and transformer
On be fixed with the first reel of winding power line, be further fixed on winding the second reel of output line on the housing.First
Being provided for of reel and the second reel winds power line and output line so that detection means is easy to carry, and optimizes inspection
Survey the performance of device.
Compared with prior art, a kind of straight-flow system exchange provided by the utility model is scurried into and insulation detection device, tool
Have the following advantages：Change the voltage of power supply using transformer, then variable resistance is serially connected with to the secondary side of transformer, first
It is serially connected with after resistance, second resistance, 3rd resistor series connection between variable resistance and output line, another termination detection of output line
Position, the straight-flow system of transformer station can be easily detected using the program, and A.C. voltmeter is parallel to the one of transformer simultaneously
Secondary side and output line, the A.C. voltmeter have display, and the magnitude of voltage measured for showing A.C. voltmeter, technical staff exists
When testing transformer station direct current system, output line and the test position of straight-flow system are connected, first resistor or second resistance or the
Three resistance can obtain different resistances from variable resistance series connection, so as to easily detect whether straight-flow system conforms to
Ask, relative to prior art, transformer station direct current system detection is easy to operate, reduces the labor intensity of technical staff.
Brief description of the drawings
Accompanying drawing 1 is that a kind of exchange of straight-flow system of the utility model is scurried into and the front view of insulation detection device；
Accompanying drawing 2 is the left view of accompanying drawing 1；
Accompanying drawing 3 is that a kind of exchange of straight-flow system of the utility model is scurried into and the electrical schematic diagram of insulation detection device.
Embodiment
Below in conjunction with the accompanying drawings, a kind of straight-flow system exchange of the present utility model is scurried into and insulation detection device is made further
Explanation.Following examples are only used for helping skilled in the art to understand the utility model, are not to limit of the present utility model
System.
The straight-flow system of detection transformer station refers to：First, after analog alternating current flees straight-flow system, the protection of straight-flow system
Whether device can be operating normally；2nd, analog DC system is directly grounded, and whether the protection device of straight-flow system can normally be moved
Make, whether the detection can be operating normally mainly for detection of the protection device of straight-flow system, and then be easy to technical staff to straight
Streaming system is carried out an acceptance inspection or safeguarded.
As shown in Figure 1 and Figure 2, a kind of straight-flow system exchange is scurried into and insulation detection device, including the housing with accommodating chamber
1 and be fixed on the lid 2 that accommodating chamber is covered on housing 1, the lid 2 is fixed by screws on the housing 1, lid 2 with
Sealing gasket can also be set between housing 1, to avoid dust from entering in accommodating chamber, influence detection means in use steady
Qualitative energy.
As shown in Figure 1, Figure 2, Figure 3 shows, A.C. voltmeter 3 is provided with the accommodating chamber, the A.C. voltmeter 3 includes display
Device 4, A.C. voltmeter 3 in the prior art have display function common voltage table, not reinflated narration herein.
As shown in figure 1, the lid 2 is provided with the watch window 5 of display content on observation display 4, on the lid 2
The transparent panel 6 of closing watch window 5 is fixed with, the lid 2 is provided with the cell body for accommodating transparent panel 6, the cell body and observation
Window 5 is communicated, also, the depth of the cell body is more than the thickness of transparent panel 6, and the transparent panel 6 is bonded in cell body, transparent panel
6 can be selected glass material, and transparent panel 6 plays a part of protecting A.C. voltmeter 3, extends the service life of A.C. voltmeter 3.
As shown in figure 3, being further fixed on the transformer 7 that no-load voltage ratio is 220/36 in the accommodating chamber, i.e. transformer 7 inputs 220V
Voltage, hands over depressor output 36V voltages, and transformer 7 is mainly used in changing the magnitude of voltage of power supply, used with improving detection means
Security performance in journey.
As shown in figure 3, being further fixed on variable resistance 8 in the accommodating chamber, the variable resistance 8 includes regulation handle
9, the hole body for passing through regulation handle 9 is offered on the lid 2, and the resistance adjustable range of the variable resistance 8 is
0k Ω to 100k Ω, regulation handle 9 are mainly used in adjusting the resistance of variable resistance 8, and regulation handle 9 should protrude the lid 2,
In order to which technical staff adjusts the resistance of variable resistance 8.
As shown in figure 3, first resistor 10, second resistance 11,3rd resistor 12 are additionally provided with the accommodating chamber, described first
Connected after resistance 10, second resistance 11, the parallel connection of second resistance 11 with variable resistance 8, the first resistor 10, second resistance
11st, 3rd resistor 12 is metalfilmresistor, and the resistance of the first resistor 10 is 10k Ω, the resistance of the second resistance 11
For 20k Ω, the resistance of the 3rd resistor 12 is 30k Ω, and control is serially connected between the first resistor 10 and variable resistance 8
The first controlling switch 16 whether first resistor 10 connects with variable resistance 8, the variable resistance 8 and second are gone here and there between hindering
It is connected to the second controlling switch 17 whether control second resistance 11 connects with variable resistance 8, the variable resistance 8 and the 3rd
Be serially connected between resistance 12 control 3rd resistor 12 whether the 3rd controlling switch 18 connected with variable resistance 8, the lid 2
Upper offer respectively installs the first controlling switch 16, the second controlling switch 17, the pilot hole of the 3rd controlling switch 18, and described first
Controlling switch 16, the second controlling switch 17, the 3rd controlling switch 18 are fixed by screws on the lid 2, and described first
Dust-proof cushion is equipped between controlling switch 16, the second controlling switch 17, the 3rd controlling switch 18 and lid 2, the dust-proof cushion glues
It is connected on the lid 2.First controlling switch 16, the second controlling switch 17, the 3rd controlling switch 18 are of the prior art
Regular tap, it is not reinflated herein.
As shown in figure 3, the transformer 7 includes primary side and secondary side, primary side is outlet side, and secondary side is output
Side, the variable resistance 8 are serially connected with the secondary side of transformer 7, and straight-flow system exchange is scurried into and insulation detection device also wraps
Include power line 13 and output line 14, after the first resistor 10, second resistance 11, the parallel connection of 3rd resistor 12 with variable resistance 8
It is connected with output line 14 while concatenation, the primary side connection power line 13 of the transformer 7, is offered away on the housing 1
String holes 15, the cable hole 15 communicate with the accommodating chamber, and the A.C. voltmeter 3 is parallel to power line 13 and output line simultaneously
On 14, binding clip is bonded on the output line 14, in order to which output line 14 is connected with the test point of straight-flow system.The electricity
First fuse 19 is serially connected between the primary side of source line 13 and transformer 7, is gone here and there between the secondary side and output line 14 of transformer 7
It is connected to second fuse 20.First fuse 19 and second fuse 20 primarily serve protective effect, extend detection means
Service life.
As shown in figure 3, power switch 21 is serially connected between the power line 13 and the primary side of transformer 7, in order to skill
The operation of art personnel.The first reel 22 of winding power line 13 is fixed with the housing 1, is further fixed on the housing 1
Wind the second reel 23 of output line 14.First reel 22 and the second reel 23 are threadedly secured on housing 1,
First reel 22 and the second reel 23 primarily serve the effect of accommodating power line 13 and output line 14, optimize detection means
Performance.
Above-mentioned technical proposal can facilitate mould relative to prior art, technical staff when testing transformer station direct current system
Intend alternating current and scurry into straight-flow system, easily analog DC system can also be directly grounded, so as to easily judge to become
Whether the protection device of electric station DC system normally work can be used, and reduce the labor intensity of technical staff.
Section Example of the present utility model is described in detail above in association with accompanying drawing.Those skilled in the art read
After this specification, based on the technical solution of the utility model, above-described embodiment can be modified, these modifications still fall within this
The protection domain of utility model.
Claims (7)
1. a kind of exchange of straight-flow system is scurried into and insulation detection device, including the housing (1) with accommodating chamber and it is fixed on housing
(1) lid (2) of accommodating chamber is covered on, it is characterised in that：A.C. voltmeter (3), the alternating current are provided with the accommodating chamber
Pressure table (3) includes display (4), and the lid (2) is provided with the watch window (5) of display content on observation display (4), institute
The transparent panel (6) that closing watch window (5) is fixed with lid (2) is stated, the lid (2), which is provided with, accommodates transparent panel (6)
Cell body, the cell body communicate with watch window (5), also, the depth of the cell body is more than the thickness of transparent panel (6), the appearance
Intracavitary of receiving is further fixed on the transformer (7) that no-load voltage ratio is 220/36, and variable resistance (8) is further fixed in the accommodating chamber, described
Variable resistance (8) includes regulation handle (9), and the hole body for making regulation handle (9) to pass through is offered on the lid (2)；
First resistor (10), second resistance (11), 3rd resistor (12), the first resistor (10), are additionally provided with the accommodating chamber
Connected after two resistance (11), second resistance (11) are in parallel with variable resistance (8), the transformer (7) includes primary side and two
Secondary side, the variable resistance (8) are serially connected with the secondary side of transformer (7), and straight-flow system exchange is scurried into and Insulation monitoring dress
Putting also includes power line (13) and output line (14), and the first resistor (10), second resistance (11), 3rd resistor (12) are in parallel
It is connected while concatenation afterwards with variable resistance (8) with output line (14), the primary side connection power line of the transformer (7)
(13) cable hole (15), is offered on the housing (1), the cable hole (15) communicates with the accommodating chamber, the alternating current
Press table (3) while be parallel on power line (13) and output line (14).
2. a kind of straight-flow system exchange according to claim 1 is scurried into and insulation detection device, it is characterised in that：Described
One resistance (10), second resistance (11), 3rd resistor (12) are metalfilmresistor, and the resistance of the first resistor (10) is
10k Ω, the resistance of the second resistance (11) is 20k Ω, and the resistance of the 3rd resistor (12) is 30k Ω.
3. a kind of straight-flow system exchange according to claim 1 is scurried into and insulation detection device, it is characterised in that：Described
It is serially connected with what whether control first resistor (10) connected with variable resistance (8) between one resistance (10) and variable resistance (8)
First controlling switch (16), the variable resistance (8) and second resistance between be serially connected with control second resistance (11) whether with can
The second controlling switch (17) of variohm (8) series connection, control is serially connected between the variable resistance (8) and 3rd resistor (12)
3rd resistor (12) processed whether the 3rd controlling switch (18) connected with variable resistance (8).
4. a kind of straight-flow system exchange according to claim 3 is scurried into and insulation detection device, it is characterised in that：The lid
The assembling of the first controlling switch of installation (16), the second controlling switch (17), the 3rd controlling switch (18) is offered on body (2) respectively
Hole, first controlling switch (16), the second controlling switch (17), the 3rd controlling switch (18) are fixed by screws in described
On lid (2), between first controlling switch (16), the second controlling switch (17), the 3rd controlling switch (18) and lid (2)
Dust-proof cushion is equipped with, the dust-proof cushion is bonded on the lid (2).
5. a kind of straight-flow system exchange according to claim 1 is scurried into and insulation detection device, it is characterised in that：It is described can
The resistance adjustable range of variohm (8) is 0k Ω to 100k Ω.
6. a kind of straight-flow system exchange according to claim 1 is scurried into and insulation detection device, it is characterised in that：The electricity
First fuse (19), the secondary side and output line of transformer (7) are serially connected between the primary side of source line (13) and transformer (7)
(14) second fuse (20) is serially connected between.
7. a kind of straight-flow system exchange according to claim 1 is scurried into and insulation detection device, it is characterised in that：The electricity
Power switch (21) is serially connected between the primary side of source line (13) and transformer (7), winding power supply is fixed with the housing (1)
The first reel (22) of line (13), it is further fixed on winding the second reel (23) of output line (14) on the housing (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720613828.3U CN206848388U (en) | 2017-05-27 | 2017-05-27 | A kind of straight-flow system exchange is scurried into and insulation detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720613828.3U CN206848388U (en) | 2017-05-27 | 2017-05-27 | A kind of straight-flow system exchange is scurried into and insulation detection device |
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| Publication Number | Publication Date |
|---|---|
| CN206848388U true CN206848388U (en) | 2018-01-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720613828.3U Active CN206848388U (en) | 2017-05-27 | 2017-05-27 | A kind of straight-flow system exchange is scurried into and insulation detection device |
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| CN (1) | CN206848388U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109633485A (en) * | 2019-01-03 | 2019-04-16 | 安徽省禹坤自动化科技有限公司 | A kind of substation scurries into DC power supply warning device with exchange |
| CN111487504A (en) * | 2020-04-29 | 2020-08-04 | 南京国臣直流配电科技有限公司 | Rapid protection method for alternating current fleeing into direct current fault of direct current system |
| CN114167175A (en) * | 2021-11-29 | 2022-03-11 | 广西电网有限责任公司钦州供电局 | Relay alternating current channeling and voltage fluctuation testing method |
-
2017
- 2017-05-27 CN CN201720613828.3U patent/CN206848388U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109633485A (en) * | 2019-01-03 | 2019-04-16 | 安徽省禹坤自动化科技有限公司 | A kind of substation scurries into DC power supply warning device with exchange |
| CN111487504A (en) * | 2020-04-29 | 2020-08-04 | 南京国臣直流配电科技有限公司 | Rapid protection method for alternating current fleeing into direct current fault of direct current system |
| CN111487504B (en) * | 2020-04-29 | 2022-05-13 | 南京国臣直流配电科技有限公司 | Rapid protection method for alternating current fleeing into direct current fault of direct current system |
| CN114167175A (en) * | 2021-11-29 | 2022-03-11 | 广西电网有限责任公司钦州供电局 | Relay alternating current channeling and voltage fluctuation testing method |
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