CN209182430U - A kind of industrial frequency AC pressure test indicating fault and automatic cut-off device - Google Patents
A kind of industrial frequency AC pressure test indicating fault and automatic cut-off device Download PDFInfo
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- CN209182430U CN209182430U CN201821495965.2U CN201821495965U CN209182430U CN 209182430 U CN209182430 U CN 209182430U CN 201821495965 U CN201821495965 U CN 201821495965U CN 209182430 U CN209182430 U CN 209182430U
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Abstract
The utility model discloses a kind of industrial frequency AC pressure test indicating fault and automatic cut-off devices, it is related to high-voltage test field, the utility model includes that voltage applies end and is connected to the main line of main line disconnecting device, it is divided into multiple branches on main line, every branch road series connection enters test product and branch disconnecting device, is further connected with temperature feedback arrangement in the connection line of test product and branch；The utility model is when in use, if the test product in some branch is breakdown, the branch disconnecting device of this branch road cuts off the branch, and when test product is breakdown, corresponding temperature feedback arrangement will embody temperature change according to its current-carrying, to provide branch positioning function；Since the break time of branch disconnecting device is less than the break time of main line disconnecting device, when certain branch is cut off, other branches can continue to carry out pressure test to test product in the case where unaffected, to reduce a possibility that test product is destroyed.
Description
Technical field
The utility model relates to high-voltage test fields, and in particular to a kind of industrial frequency AC pressure test indicating fault and from
Dynamic device for excising.
Background technique
Industrial frequency AC pressure test is the main means examined insulation of electrical installation performance and find insulation defect, for
Judge that can electrical equipment put into operation using with decisive significance.Industrial frequency AC pressure test is a kind of destructive testing,
To prevent apparatus insulated performance by non-essential destruction, Ying Jinliang avoids repeating.
Under normal conditions, when laboratory carries out AC power frequency pressure test, to improve test efficiency, by multiple same models
Test product parallel connection is pressurizeed, in the industrial frequency AC pressure test of such as insulating bar, insulating glove, insulating boot, insulator these test products
In, often multiple same model test products parallel connections are pressurizeed simultaneously.This method has the following deficiencies: first, although improving test
Efficiency, but once puncture, if being difficult to find out breakdown test product without obvious spark tracking；Second, if pressure-resistant time
It is not finished and punch-through just has occurred, then pressure test system carries protective device tripping, and pressure test is interrupted, hit wait exclude
It wears test product and carries out pressure test again later, so just cause repeated pressurization, increase the destructiveness to test product.
Utility model content
Breakdown test product is difficult to find out and exclude when to solve the problems, such as the pressure resistance in parallel of multiple test products and test product may be by
To the problem for repeating pressure resistance, the utility model proposes a kind of industrial frequency AC pressure test indicating fault and automatic cut-off devices；
It can position branch locating for breakdown test product and cut off the branch when applying；And the branch will not influence it in cutting
A possibility that test product of his branch continues disruptive test, therefore the test product for reducing other branches is destroyed.
The purpose of this utility model is achieved through the following technical solutions:
A kind of industrial frequency AC pressure test indicating fault and automatic cut-off device, including for generate test needed for voltage
Voltage applies end, at least one main line, the main line disconnecting device for cutting off main line electric current, and the voltage applies end to be done with described
The one end on road connects, and the main line disconnecting device accesses main line, and the other end on the main line is divided into a plurality of branch, in multiple branches
Every branch road connect more than one test product and more than one be used to cut off the branch disconnecting device of branch current, often
It is grounded after the series connection test product of branch described in item and branch disconnecting device, the load current of the main line disconnecting device is more than its preset value
When then cut off main line electric current, the load current of each branch disconnecting device then cuts off branch current when being more than its preset value,
The break time of the branch disconnecting device is less than the break time of main line disconnecting device, and each test product is insulating materials
And be same model, the test product is isolated with two tie point test items of branch, and the test product head end or end metal are conductive
Part, which is equipped with, according to its current-carrying temperature sensor and to embody the temperature feedback arrangement of temperature change, the temperature feedback arrangement string
Couple between test product and branch.
Further, the main line disconnecting device and branch disconnecting device are using earth leakage protective device or fastp-acting fuse or pottery
Porcelain gas-discharge tube.
Further, every branch shares a ground terminal.
Further, the temperature feedback arrangement includes resistance and temperature sensing device, and the resistance series connection enters test product and branch
Between road, the temperature sensing device is connected on the resistance with the temperature change for detecting the resistance and embodies temperature change
Change.
Further, the temperature sensing device uses heat detector or temperature-sensitive patch.
It by using the utility model, can produce following the utility model has the advantages that the utility model includes that voltage applies end and connects
There is the main line of main line disconnecting device, multiple branches are divided on main line, every branch road series connection enters test product and branch disconnecting device,
It is further connected with temperature feedback arrangement in the connection line of test product and branch, the test product of every branch road access is identical in test every time
Model and parameter, the shunting to guarantee every branch is equal, thus the accuracy and reliability of guarantee test；The utility model
When in use, after voltage applies the voltage value pressurization tested as needed at end, the load current preset value of branch disconnecting device is set
The load current value of locating branch when being set to less than no test product, if test product in some branch is breakdown to show that the test product exists
Insulating capacity is not up to standard under this voltage value, and the branch disconnecting device of branch road locating for test product breakdown at this time cuts the branch
Disconnected, the temperature feedback arrangement that the test product is connected when test product is breakdown will embody temperature change according to its current-carrying, to mention
For branch positioning function, and then branch locating for breakdown test product can be directly found out, can be used for classifying, such as by breakdown time to examination
The arrangement classification of product voltage endurance capability；Since the break time of branch disconnecting device is less than the break time of main line disconnecting device,
When certain branch is cut off, the electric current on main line can't be interrupted, thus other branches can be in unaffected situation
It is lower to continue to carry out pressure test to the test product of other branch roads, it is pressurizeed again without restarting voltage application end, thus
Reduce a possibility that test product is destroyed；Finally after all test products are breakdown, main line disconnecting device cuts off main line, pressure test
Terminate, whole process realizes automation without manual intervention, and can take out breakdown test product at any time.
Detailed description of the invention
Attached drawing described herein is used to provide to further understand the utility model embodiment, constitutes the one of the application
Part does not constitute the restriction to the utility model embodiment.In the accompanying drawings:
Fig. 1 is the overall system structure figure of the utility model.
Specific embodiment
For the purpose of this utility model, technical solution and advantage is more clearly understood, below with reference to embodiment and attached drawing,
The utility model is described in further detail, and the exemplary embodiment and its explanation of the utility model are only used for explaining this
Utility model is not intended to limit the scope of the present invention.
A kind of industrial frequency AC pressure test indicating fault and automatic cut-off device, including the voltage for generating alternating voltage
Apply end, at least one main line, the main line disconnecting device for cutting off main line electric current, voltage applies end and the one end on main line and connects
It connects, main line disconnecting device accesses main line, and the other end on main line is divided into a plurality of branch, and every branch road in multiple branches is connected
More than one test product and more than one be used to cut off the branch disconnecting device of branch current, main line disconnecting device and branch are cut
Disconnected device uses earth leakage protective device or the device with the same function such as fastp-acting fuse or ceramic gas discharge tube, every branch
It is grounded after series connection test product and branch disconnecting device, it is preferred that every branch shares a ground terminal.
Specifically, the load current of main line disconnecting device then cuts off main line electric current when being more than its preset value, each branch is cut
The load current of disconnected device then cuts off branch current when being more than its preset value；Meanwhile the break time of branch disconnecting device need to be small
In the break time of main line disconnecting device, each test product is insulating materials and is same model, two companies of test product and branch
The isolation of contact test item, being additionally provided on test product according to its current-carrying temperature sensor and can embody the temperature feedback of temperature change and fill
It sets, between temperature feedback arrangement series connection access test product and branch, temperature feedback arrangement includes resistance and temperature sensing device, resistance series connection
It accesses between test product and branch, temperature sensing device is connected on resistance with the temperature change for detecting resistance and embodies temperature change
Change, temperature sensing device uses heat detector or temperature-sensitive patch.
A kind of specific embodiment is illustrated below with reference to Fig. 1:
Such as Fig. 1, in this embodiment only for the example only containing a main line, the embodiment containing a plurality of main line
Working principle and the course of work are consistent, and it will not be described here, and main line disconnecting device and branch disconnecting device use earth leakage protective device.
End output is applied by voltage to be divided into a plurality of branch behind a main line after the disconnecting device of main line, branch road is connected to an examination
Product, a temperature feedback arrangement and a branch disconnecting device, the test product of every branch road are the object of same model each other, this
Test product in embodiment selects insulating bar；One end of insulating bar is connect with branch, the other end and temperature feedback arrangement of insulating bar
In resistance one end connection, the other end of resistance connect with branch again, and heat detector or temperature-sensitive patch are connected on resistance,
Then branch is connect with one end of branch disconnecting device again, the other end ground connection of branch disconnecting device；It is exhausted when certain branch road
When edge bar is breakdown, the electric current passed through at this time is greater than the preset value of branch disconnecting device, which is cut off, while heat detection
Device issues signal so that the insulating bar for showing this road is breakdown or the discoloration of temperature-sensitive patch from a plurality of direct current in order to finding out the branch
Road.
When multiple test products are set on the road Ruo Zhi, can be used for test such as insulating glove, insulating boot it is such often in pairs or
The insulated article occurred in groups.Such as when a pair of of insulating glove series connection is set, this series connection insulation energy to insulating glove can be tested
Power, such situation are present in the working environment of both hands forming circuit.If an insulating glove and an insulating boot series connection are set,
The series connection insulating capacity of the two insulated articles can be tested, such situation is present in the building ring with foot forming circuit on the other hand
Border.Other combinations can infer corresponding test specific aim with above-mentioned thinking.
Above-described specific embodiment, to the purpose of this utility model, technical scheme and beneficial effects carried out into
One step is described in detail, it should be understood that being not used to limit the foregoing is merely specific embodiment of the present utility model
Determine the protection scope of the utility model, within the spirit and principle of the utility model, any modification for being made equally is replaced
It changes, improve, should be included within the scope of protection of this utility model.
Claims (5)
1. a kind of industrial frequency AC pressure test indicating fault and automatic cut-off device, it is characterised in that: including for generating voltage
Voltage apply end, at least one main line, the main line disconnecting device for cutting off main line electric current, the voltage apply end with it is described
The one end on main line connects, and the main line disconnecting device accesses main line, and the other end on the main line is divided into a plurality of branch, multiple branches
In every branch road connect more than one test product and more than one be used to cut off the branch disconnecting device of branch current,
It is grounded after every branch series connection test product and branch disconnecting device, the load current of the main line disconnecting device is default more than it
Main line electric current is then cut off when value, the load current of each branch disconnecting device then cuts off branch electricity when being more than its preset value
Stream, the break time of the branch disconnecting device are less than the break time of main line disconnecting device, and each test product is insulation
Material and be same model object, the test product is isolated with two tie point test items of branch, is additionally provided on the test product
According to its current-carrying temperature sensor and the temperature feedback arrangement of temperature change, the temperature feedback arrangement series connection access examination can be embodied
Between product and branch.
2. a kind of industrial frequency AC pressure test indicating fault according to claim 1 and automatic cut-off device, feature exist
In: the main line disconnecting device and branch disconnecting device are using earth leakage protective device or fastp-acting fuse or ceramic gas discharge tube.
3. a kind of industrial frequency AC pressure test indicating fault according to claim 1 and automatic cut-off device, feature exist
In: every branch shares a ground terminal.
4. a kind of industrial frequency AC pressure test indicating fault according to claim 1 and automatic cut-off device, feature exist
In: the temperature feedback arrangement includes resistance and temperature sensing device, and the resistance series connection enters between test product and branch, the temperature-sensitive
Device is connected on the resistance with the temperature change for detecting the resistance and embodies temperature change.
5. a kind of industrial frequency AC pressure test indicating fault according to claim 4 and automatic cut-off device, feature exist
In: the temperature sensing device uses heat detector or temperature-sensitive patch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821495965.2U CN209182430U (en) | 2018-09-12 | 2018-09-12 | A kind of industrial frequency AC pressure test indicating fault and automatic cut-off device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821495965.2U CN209182430U (en) | 2018-09-12 | 2018-09-12 | A kind of industrial frequency AC pressure test indicating fault and automatic cut-off device |
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| CN209182430U true CN209182430U (en) | 2019-07-30 |
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| CN201821495965.2U Active CN209182430U (en) | 2018-09-12 | 2018-09-12 | A kind of industrial frequency AC pressure test indicating fault and automatic cut-off device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112379222A (en) * | 2020-10-23 | 2021-02-19 | 深圳市深电电力设备发展有限公司 | Cable accessory withstand voltage testing device capable of actively reporting fault |
-
2018
- 2018-09-12 CN CN201821495965.2U patent/CN209182430U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112379222A (en) * | 2020-10-23 | 2021-02-19 | 深圳市深电电力设备发展有限公司 | Cable accessory withstand voltage testing device capable of actively reporting fault |
| CN112379222B (en) * | 2020-10-23 | 2023-11-28 | 深圳市深电电力设备发展有限公司 | Cable accessory withstand voltage testing device capable of actively reporting fault |
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