CN205748735U - A kind of pressure transducer for disconnecting switch - Google Patents
A kind of pressure transducer for disconnecting switch Download PDFInfo
- Publication number
- CN205748735U CN205748735U CN201620442916.7U CN201620442916U CN205748735U CN 205748735 U CN205748735 U CN 205748735U CN 201620442916 U CN201620442916 U CN 201620442916U CN 205748735 U CN205748735 U CN 205748735U
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- base
- disconnecting switch
- contact
- pressure transducer
- projection
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Abstract
The utility model discloses a kind of pressure transducer for disconnecting switch, base including annular, the bottom of base is provided with the straingauge of annular, straingauge be provided above projection, the upper surface of projection is higher than the upper surface of base, straingauge is connected with lead-out wire, and lead-out wire reaches base exterior through base.A kind of pressure transducer for disconnecting switch of this utility model, is affected little compared to temperature sensor, it is possible to accurately reflect out the operation conditions of high voltage isolation switch contact by environmental factors.During due to high voltage isolator divide-shut brake, the dynamic/static contact contact process time is the shortest, contact whether loose contact when pressure monitoring more can directly reflect disconnecting switch divide-shut brake.
Description
Technical field
This utility model belongs to intelligent grid device technique field, is specifically related to a kind of for disconnecting switch
Pressure transducer.
Background technology
Along with the fast development of intelligent grid, more and more higher to the quality of electric power and the reliability of power supply.
High voltage isolator play in power system transmit electric power, insulating power supply, change system operation mode,
The important function such as deciliter Smaller load electric current, its safe and reliable operation has large effect to electrical network.By
Contact in high voltage isolator is exposed in air, and long operation can make disconnecting switch sound touch
Head loose contact causes contact resistance to increase thus causes contact to generate heat, and local can be caused under serious conditions molten
Disconnected, produce arc discharge, ultimately cause the major accident such as damage and power failure of equipment.Therefore disconnecting switch
The safe and reliable operation of electrical network is had great significance by the monitoring in real time of contact.
At present, the monitoring to isolation switch contact mainly has following several ways: one is dependent on overhauling people
The experience of member judges, this method both inconveniences are the most inaccurate；Another way is to pass through temperature sensing
The temperature of isolation switch contact monitored in real time by device, and this indirectly mode is vulnerable to the impact of environment, non-thread
Property error relatively big, and can not directly reflect the operation conditions of isolation switch contact.
Utility model content
The purpose of this utility model is to provide a kind of pressure transducer for disconnecting switch, solves existing
The problem that temperature sensor can not accurately reflect the operation conditions of high voltage isolation switch contact.
This utility model be employed technical scheme comprise that, a kind of pressure transducer for disconnecting switch, bag
Including the base of annular, the bottom of base is provided with the straingauge of annular, straingauge upper
Side is provided with projection, and the upper surface of projection is higher than the upper surface of base, and straingauge is connected with lead-out wire,
Lead-out wire reaches base exterior through base.
Feature of the present utility model also resides in:
The external diameter of base is more than the external diameter of projection, and the internal diameter of base is less than the internal diameter of projection.
The external diameter of projection is slightly less than the external diameter of base, and the internal diameter of projection is slightly larger than the internal diameter of base.
The beneficial effects of the utility model are: a kind of pressure sensing for disconnecting switch of this utility model
Device, is affected little compared to temperature sensor, it is possible to accurately reflect out high voltage isolator by environmental factors
The operation conditions of contact.During due to high voltage isolator divide-shut brake, the dynamic/static contact contact process time is the shortest,
Contact whether loose contact when pressure monitoring more can directly reflect disconnecting switch divide-shut brake.
Accompanying drawing explanation
Fig. 1 is the front view of a kind of pressure transducer for disconnecting switch of this utility model；
Fig. 2 is the top view of a kind of pressure transducer for disconnecting switch of this utility model；
Fig. 3 is the installation diagram of a kind of pressure transducer for disconnecting switch of this utility model.
In figure, 1. base, 2. straingauge, 3. projection, 4. lead-out wire.
Detailed description of the invention
With detailed description of the invention, this utility model is described in detail below in conjunction with the accompanying drawings.
A kind of pressure transducer for disconnecting switch of this utility model, front view is as it is shown in figure 1, overlook
Figure is as in figure 2 it is shown, include the base 1 of annular, and the internal diameter d of base 1 is 8mm, and outer diameter D is
25mm, the bottom of base 1 is provided with the straingauge 2 of annular, the top of straingauge 2
Being provided with projection 3, the upper surface of projection 3 is higher than the upper surface of base 1, and projection 3 protrudes base 1
Being highly 2mm, straingauge 2 is connected with lead-out wire 4, and lead-out wire 4 reaches the end through base 1
Seat 1 is outside.The external diameter of base 1 is more than the external diameter of projection 3, and the internal diameter of base 1 is interior less than projection 3
Footpath, the external diameter of projection 3 is slightly less than the external diameter of base 1, and the internal diameter of projection 3 is slightly larger than the internal diameter of base 1.
During use, as it is shown on figure 3, the pressure transducer of the application is arranged between nut and spring compressor,
Without affecting the frame for movement of disconnecting switch, disconnecting switch mainly passes through compression spring in making process
Pressure is provided so that fingertip static state contact good contact for fingertip.As long as therefore measuring compression spring dividing
Pressure variety in making process just can monitor disconnecting switch whether good contact when closing a floodgate.
Projection 3 effect of pressure transducer is the pressure of sensing compression spring, can also protect pressure simultaneously
Sensor will not be the biggest because of stress so that straingauge 2 gross distortion and damage pressure transducer.
During work, when disconnecting switch divide-shut brake runs, by compression bullet after the projection 3 of pressure transducer
The pressure effect of spring, due to the interaction of power, the strain resistor screen 2 of pressure sensor inside also can be subject to
Deform to the pressure of compression spring, cause resistance value to change, then by intelligent stone bridge circuit,
Pressure signal is converted into voltage signal.
A kind of pressure transducer for disconnecting switch of this utility model, compared to temperature sensor by environment
The impact of factor is little, it is possible to accurately reflect out the operation conditions of high voltage isolation switch contact.Due to high pressure every
When leaving pass divide-shut brake, the dynamic/static contact contact process time is the shortest, and pressure monitoring more can directly reflect isolation
Contact whether loose contact during switch divide-shut brake.
Claims (3)
1. the pressure transducer for disconnecting switch, it is characterised in that include the base of annular
(1), the bottom of base (1) is provided with the straingauge (2) of annular, straingauge (2)
Be provided above projection (3), the upper surface of projection (3) is higher than the upper surface of base (1), strain
Resistor disc (2) is connected with lead-out wire (4), and lead-out wire (4) reaches base (1) through base (1)
Outside.
A kind of pressure transducer for disconnecting switch the most according to claim 1, it is characterised in that
The external diameter of described base (1) is more than the external diameter of described projection (3), and the internal diameter of described base (1) is little
Internal diameter in described projection (3).
A kind of pressure transducer for disconnecting switch the most according to claim 1, it is characterised in that
The external diameter of described projection (3) is slightly less than the external diameter of described base (1), the internal diameter of described projection (3)
Internal diameter slightly larger than described base (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620442916.7U CN205748735U (en) | 2016-05-16 | 2016-05-16 | A kind of pressure transducer for disconnecting switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620442916.7U CN205748735U (en) | 2016-05-16 | 2016-05-16 | A kind of pressure transducer for disconnecting switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205748735U true CN205748735U (en) | 2016-11-30 |
Family
ID=57366237
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620442916.7U Active CN205748735U (en) | 2016-05-16 | 2016-05-16 | A kind of pressure transducer for disconnecting switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205748735U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107785194A (en) * | 2017-11-16 | 2018-03-09 | 国家电网公司 | The disconnecting switch division position discriminating gear and method of a kind of recognizable contact condition |
-
2016
- 2016-05-16 CN CN201620442916.7U patent/CN205748735U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107785194A (en) * | 2017-11-16 | 2018-03-09 | 国家电网公司 | The disconnecting switch division position discriminating gear and method of a kind of recognizable contact condition |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |