CN108918975A - It is a kind of for estimating the equipment of the grounding connection resistance of electrical devices - Google Patents
It is a kind of for estimating the equipment of the grounding connection resistance of electrical devices Download PDFInfo
- Publication number
- CN108918975A CN108918975A CN201810303005.XA CN201810303005A CN108918975A CN 108918975 A CN108918975 A CN 108918975A CN 201810303005 A CN201810303005 A CN 201810303005A CN 108918975 A CN108918975 A CN 108918975A
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- Prior art keywords
- electrical devices
- equipment
- estimating
- connection resistance
- cabinet
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/20—Measuring earth resistance; Measuring contact resistance, e.g. of earth connections, e.g. plates
- G01R27/205—Measuring contact resistance of connections, e.g. of earth connections
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Resistance Or Impedance (AREA)
Abstract
The invention discloses a kind of for estimating the equipment of the grounding connection resistance of electrical devices, including electrical devices, the electrical devices front is provided with mounting base, the mounting base front is provided with mounting rack, the mounting rack upper end is equipped with column, the upper end of the column is fixedly installed with display, the display side is provided with control switch, the column side is provided with alarm, processor, host computer and battery, connecting wire is provided in the middle part of the electrical devices bottom surface, the upper connecting wire lower end is provided with tension sensor, the tension sensor lower end is provided with lower connecting wire.Beneficial effect is：Whether a kind of ground resistance that the equipment for estimating the grounding connection resistance of electrical devices can estimate out the electrical devices in real time is more than or less than standard value and reminds user by the alarm note that the ground resistance of the electrical devices is effectively avoided to be maintained at the state of the larger value for a long time.
Description
Technical field
The present invention relates to the grounding connection fields of electrical devices, more particularly to a kind of for estimating the ground connection of electrical devices
The equipment for connecting resistance.
Background technique
When some electrical devices are connected to power-supply system, the leakage current for being intended to be re-introduced into ground connection may occur in which.It borrows
Help example, the battery charger for electricity or mixed traction motor vehicles is on-insulated, and when being connected to power-supply system
It can lead to and leakage current occur.Such as application No. is 201280030149.3 Chinese patent, a kind of equipment and corresponding is disclosed
Method, be connected to electric power network for estimating, pass through additional resistance（6）It is connected similarly to the electrical devices of ground connection（1）Connect
The resistance of ground connection（5）, and the electrical devices include at least one impedance in electrical devices input arrangement, the equipment
It is that it includes with corresponding method characteristic：Voltage generator（10）, the voltage generator（10）Be connected to the impedance and
It is connected to ground connection；For measuring the electric current of flow direction ground connection（12）Component；And calculating unit（13）, the calculating unit（13）
It can estimate the electric current as flow direction ground connection（It）Function grounding connection resistance（5）.
In above-mentioned patent, if grounding connection is damaged or if grounding connection resistance is too high, leakage current, which can lead to, to be connect
Electric shock stream occurs on the electricity pedestal of device.In the case where grounding connection resistance is too high and if facilitate through user's
Current channel, the pick-up current are dangerous for the user for contacting the electricity pedestal of device.
Therefore, in order to estimate out the grounding connection resistance of electrical devices in time, it is necessary to design a kind of for estimating electricity
The equipment of the grounding connection resistance of device solves the above problems.
Summary of the invention
The object of the invention is that providing a kind of ground connection company for estimating electrical devices to solve the above-mentioned problems
The equipment of connecting resistance.
The present invention is achieved through the following technical solutions above-mentioned purpose：
It is a kind of for estimating the equipment of the grounding connection resistance of electrical devices, including electrical devices, the electrical devices front is set
It is equipped with mounting base, the mounting base front is provided with mounting rack, and the mounting rack upper end is equipped with column, and the upper end of the column is solid
Dingan County is equipped with display, and the display side is provided with control switch, the column side be provided with alarm, processor,
Host computer and battery, the electrical devices bottom surface middle part are provided with connecting wire, and the upper connecting wire lower end is provided with drawing
Force snesor, the tension sensor lower end are provided with lower connecting wire, and the lower connecting wire lower end is provided with earthing or grounding means,
The earthing or grounding means includes cabinet and the pressure sensor and weep pipe that are fixedly mounted on the body side, and the pulling force passes
Sensor includes sensor main body and the upper binding post and lower binding post for being fixedly mounted on the sensor main body upper and lower ends, described
Cabinet upper surface is provided with water filling port, and the water filling port lower end is provided with filter.
Wherein, the electrical devices bottom is provided with pedestal, and the pedestal quantity has multiple, is evenly distributed on the electricity
On device bottom surface.
Wherein, charging interface is provided on the battery.
Wherein, the control switch is electrically connected with the battery.
Wherein, the processor is electrically connected with the pressure sensor and the tension sensor.
Wherein, the host computer is electrically connected with the processor and the alarm.
Wherein, the upper binding post and the lower binding post are electric with the upper connecting wire and the lower connecting wire respectively
Connection.
Wherein, the cabinet upper end is fixedly connected with the lower connecting wire lower end, and the cabinet is positive cube shape.
Wherein, the pressure sensor and the weep pipe quantity have multiple, are evenly distributed on the cabinet two sides.
Wherein, the filter is fixedly mounted on the cabinet wall top surface, and water storage tank, institute are provided in the cabinet
Water storage tank is stated to be connected to the weep pipe.
In above structure, when the earthing or grounding means and ground close contact, the ground resistance of the electrical devices is smaller,
When the earthing or grounding means and surface separation, the ground resistance of the electrical devices is larger, at this point, the tension sensor can
Detect a value of thrust bigger with the value of thrust when close contact of ground than the earthing or grounding means, and the earthing or grounding means
On the pressure sensor but can't detect any numerical information, then this detection data is delivered to the processor,
It shows after processor processing and is checked on the display for operator, at the same time, after the processor will be handled
Data information transfer give the host computer, the host computer by the information with its built in normal value compare, work as detection
When value is greater than normal value, alarm equipment alarm described in the PC control reminds operator to pay attention to adjusting the upper connecting wire
Prevent the electricity from filling so that the earthing or grounding means can keep being in close contact with ground with the length of the lower connecting wire
The ground resistance set keeps the larger value for a long time, when the earthing or grounding means and ground close contact, the tension sensor inspection
The value of thrust measured is less than the gravity of the earthing or grounding means, at this point, the value of thrust of the tension sensor side is smaller, and the pressure
The value of thrust that force snesor measures is larger, and the above-mentioned pulling force information measured and pressure information are delivered to the processor, warp
It shows after the processor and is checked on the display for operator, at the same time, the water stored in the water storage tank is through institute
Drippage is stated on the ground, to further decrease the ground resistance of the electrical devices.
Beneficial effect is：A kind of equipment for estimating the grounding connection resistance of electrical devices can be estimated out in real time
Whether the ground resistance of the electrical devices is more than or less than standard value and reminds user by the alarm note that effectively
The ground resistance of the electrical devices is avoided to be maintained at the state of the larger value for a long time.
Detailed description of the invention
Fig. 1 is of the present invention a kind of for estimating the structural schematic diagram of the equipment of the grounding connection resistance of electrical devices；
Fig. 2 is of the present invention a kind of for estimating the partial enlarged view of Fig. 1 of the equipment of the grounding connection resistance of electrical devices；
Fig. 3 is of the present invention a kind of for estimating first part of Fig. 2 of the equipment of the grounding connection resistance of electrical devices
Enlarged drawing；
Fig. 4 is of the present invention a kind of for estimating second part of Fig. 2 of the equipment of the grounding connection resistance of electrical devices
Enlarged drawing；
Fig. 5 is of the present invention a kind of for estimating the internal junction of the earthing or grounding means of the equipment of the grounding connection resistance of electrical devices
Composition.
The reference numerals are as follows：
1, electrical devices；2, pedestal；3, mounting base；4, mounting rack；5, column；6, alarm；7, display；8, upper connection is led
Line；9, tension sensor；10, sensor main body；11, upper binding post；12, lower binding post；13, lower connecting wire；14, ground connection dress
It sets；15, pressure sensor；16, weep pipe；17, cabinet；18, water storage tank；19, filter；20, water filling port；21, control switch；
22, processor；23, host computer；24, battery；25, charging interface.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings：
One embodiment as described in Fig. 1-Fig. 5, it is a kind of for estimating setting for the equipment of the grounding connection resistance of electrical devices
It is standby, including electrical devices 1,1 front of electrical devices be provided with mounting base 3,3 front of mounting base is provided with mounting rack 4,
The mounting rack 4 is used to support vertical columns 5, and 4 upper end of mounting rack is equipped with the column 5, and 5 upper end of column is fixed
Display 7 is installed, 7 side of display is provided with control switch 21, and the control switch 21 is for controlling the alarm
Device 6, the processor 22,23 power on/off of the host computer, 5 side of column are provided with alarm 6, processor 22, upper
Machine 23 and battery 24,1 bottom surface of the electrical devices middle part are provided with connecting wire 8, and upper 8 lower end of connecting wire is provided with
Tension sensor 9,9 lower end of tension sensor are provided with lower connecting wire 13, and lower 13 lower end of connecting wire is provided with
Earthing or grounding means 14, the electrical devices 1 for being grounded by the earthing or grounding means 14, and the earthing or grounding means 14 is including cabinet 17 and admittedly
Pressure sensor 15 and weep pipe 16 of the Dingan County on 17 side of cabinet, the weep pipe 16 are used to fill to the ground connection
It sets 14 to drip with the contact position on ground, further decreases the ground resistance of the electrical devices 1, the tension sensor 9 includes
Sensor main body 10 and the upper binding post 11 and lower binding post 12 for being fixedly mounted on 10 upper and lower ends of sensor main body, it is described
17 upper surface of cabinet is provided with water filling port 20, and the water filling port 20 into the cabinet 17 for filling the water, under the water filling port 20
End is provided with filter 19, and the filter 19 is used to filter the water into the cabinet 17.
In the present embodiment, 1 bottom of electrical devices is provided with pedestal 2,2 quantity of pedestal have it is multiple, uniformly point
Cloth is on 1 bottom surface of electrical devices.
In the present embodiment, charging interface 25 is provided on the battery 24.
In the present embodiment, the control switch 21 is electrically connected with the battery 24.
In the present embodiment, the processor 22 is electrically connected with the pressure sensor 15 and the tension sensor 9.
In the present embodiment, the host computer 23 is electrically connected with the processor 22 and the alarm 6.
In the present embodiment, the upper binding post 11 and the lower binding post 12 respectively with the upper connecting wire 8 and institute
Lower connecting wire 13 is stated to be electrically connected.
In the present embodiment, 17 upper end of cabinet is fixedly connected with lower 13 lower end of connecting wire, the cabinet 17
Be positive cube shape.
In the present embodiment, the pressure sensor 15 and 16 quantity of the weep pipe have multiple, are evenly distributed on described
On 17 two sides of cabinet.
In the present embodiment, the filter 19 is fixedly mounted on the 17 inner wall top surface of cabinet, in the cabinet 17
It is provided with water storage tank 18, the water storage tank 18 is connected to the weep pipe 16.
In above structure, when the earthing or grounding means 14 is in close contact with ground, the ground resistances of the electrical devices 1 compared with
Small, when the earthing or grounding means 14 is with surface separation, the ground resistance of the electrical devices 1 is larger, at this point, the pull sensing
Device 9 is able to detect that a value of thrust bigger with the value of thrust when close contact of ground than the earthing or grounding means 14, Er Qiesuo
The pressure sensor 15 stated on earthing or grounding means 14 but can't detect any numerical information, and then this detection data is passed
To the processor 22, it is shown on the display 7 after the processor 22 processing and is checked for operator, at the same time,
The processor 22 will treated data information transfer the gives host computer 23, the host computer 23 will the information and its built in
Normal value compare, when detected value is greater than normal value, the host computer 23 controls the alarm 6 and alarms, and reminds behaviour
Author pays attention to adjusting the length of the upper connecting wire 8 and the lower connecting wire 13, so that the earthing or grounding means 14 can be with
Ground keeps being in close contact, and prevents the ground resistance of the electrical devices 1 from keeping the larger value for a long time, when the earthing or grounding means 14
When being in close contact with ground, the value of thrust that the tension sensor 9 detects is less than the gravity of the earthing or grounding means 14, at this point,
The value of thrust of 9 side of tension sensor is smaller, and the value of thrust that the pressure sensor 15 measures is larger, the above-mentioned drawing measured
Force information and pressure information are delivered to the processor 22, are shown on the display 7 and supply after the processor 22
Operator checks that at the same time, the water stored in the water storage tank 18 is dripped through described on the ground, to further decrease institute
State the ground resistance of electrical devices 1.
The difference of embodiment two, the present embodiment and embodiment one is only in that the upper connecting wire 8, the lower connection
Conducting wire 13 and the tension sensor 9 are replaced with chain, and the chain is made of metal material, and its length is long-range and institute
It states electrical devices 1 and arrives the distance between ground, connect the electrical devices 1 with the earthing or grounding means 14 using the chain
Come, not only ensure that the reliability of grounding connection, but also be convenient for changing, and installing and dismounting is simple and convenient, practicability is good.
The basic principles, main features and advantages of the invention have been shown and described above.The technical staff of the industry should
Understand, the present invention is not limited to the above embodiments, and the above embodiments and description only describe originals of the invention
Reason, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes and improvements
It all fall within the protetion scope of the claimed invention.The claimed scope of the invention is by appending claims and equivalents circle
It is fixed.
Claims (10)
1. a kind of for estimating the equipment of the equipment of the grounding connection resistance of electrical devices, it is characterised in that：Including electrical devices
（1）, the electrical devices（1）Front is provided with mounting base（3）, the mounting base（3）Front is provided with mounting rack（4）, described
Mounting rack（4）Upper end is equipped with column（5）, the column（5）Upper end is fixedly installed with display（7）, the display（7）Side
Face is provided with control switch（21）, the column（5）Side is provided with alarm（6）, processor（22）, host computer（23）And electricity
Pond（24）, the electrical devices（1）Connecting wire is provided in the middle part of bottom surface（8）, the upper connecting wire（8）Lower end is provided with
Tension sensor（9）, the tension sensor（9）Lower end is provided with lower connecting wire（13）, the lower connecting wire（13）Under
End is provided with earthing or grounding means（14）, the earthing or grounding means（14）Including cabinet（17）Be fixedly mounted on the cabinet（17）Side
On pressure sensor（15）And weep pipe（16）, the tension sensor（9）Including sensor main body（10）And fixed installation
In the sensor main body（10）The upper binding post of upper and lower ends（11）With lower binding post（12）, the cabinet（17）Upper surface is set
It is equipped with water filling port（20）, the water filling port（20）Lower end is provided with filter（19）.
2. it is according to claim 1 a kind of for estimating the equipment of the equipment of the grounding connection resistance of electrical devices, it is special
Sign is：The electrical devices（1）Bottom is provided with pedestal（2）, the pedestal（2）Quantity has multiple, is evenly distributed on described
Electrical devices（1）On bottom surface.
3. it is according to claim 1 a kind of for estimating the equipment of the equipment of the grounding connection resistance of electrical devices, it is special
Sign is：The battery（24）On be provided with charging interface（25）.
4. it is according to claim 1 a kind of for estimating the equipment of the equipment of the grounding connection resistance of electrical devices, it is special
Sign is：The control switch（21）With the battery（24）Electrical connection.
5. it is according to claim 1 a kind of for estimating the equipment of the equipment of the grounding connection resistance of electrical devices, it is special
Sign is：The processor（22）With the pressure sensor（15）With the tension sensor（9）Electrical connection.
6. it is according to claim 1 a kind of for estimating the equipment of the equipment of the grounding connection resistance of electrical devices, it is special
Sign is：The host computer（23）With the processor（22）With the alarm（6）Electrical connection.
7. it is according to claim 1 a kind of for estimating the equipment of the equipment of the grounding connection resistance of electrical devices, it is special
Sign is：The upper binding post（11）With the lower binding post（12）Respectively with the upper connecting wire（8）With the lower connection
Conducting wire（13）Electrical connection.
8. it is according to claim 1 a kind of for estimating the equipment of the equipment of the grounding connection resistance of electrical devices, it is special
Sign is：The cabinet（17）Upper end and the lower connecting wire（13）Lower end is fixedly connected, the cabinet（17）For square
Shape.
9. it is according to claim 1 a kind of for estimating the equipment of the equipment of the grounding connection resistance of electrical devices, it is special
Sign is：The pressure sensor（15）With the weep pipe（16）Quantity has multiple, is evenly distributed on the cabinet（17）Two
On side.
10. it is according to claim 1 a kind of for estimating the equipment of the equipment of the grounding connection resistance of electrical devices, it is special
Sign is：The filter（19）It is fixedly mounted on the cabinet（17）On inner wall top surface, the cabinet（17）Inside it is provided with storage
Sink（18）, the water storage tank（18）With the weep pipe（16）Connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810303005.XA CN108918975A (en) | 2018-04-06 | 2018-04-06 | It is a kind of for estimating the equipment of the grounding connection resistance of electrical devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810303005.XA CN108918975A (en) | 2018-04-06 | 2018-04-06 | It is a kind of for estimating the equipment of the grounding connection resistance of electrical devices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108918975A true CN108918975A (en) | 2018-11-30 |
Family
ID=64402929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810303005.XA Pending CN108918975A (en) | 2018-04-06 | 2018-04-06 | It is a kind of for estimating the equipment of the grounding connection resistance of electrical devices |
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| CN (1) | CN108918975A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102398867A (en) * | 2011-11-02 | 2012-04-04 | 中联重科股份有限公司 | Anti-tipping method and system for crane |
| KR20150043042A (en) * | 2013-10-14 | 2015-04-22 | 한국전기연구원 | Design Method for Reduction of 1-ph Fault Current Satisfying Effective Grounding Criterion Without Neutral Impedance Device in Transformer Substation |
| CN204407625U (en) * | 2015-02-17 | 2015-06-17 | 国家电网公司 | Intelligent temporary ground wire |
| CN204649882U (en) * | 2015-05-08 | 2015-09-16 | 宁夏中科天际防雷科技有限公司 | Lightning protection test macro |
| CN105527499A (en) * | 2015-12-31 | 2016-04-27 | 刘雷 | Grounding resistance detection and analysis system with automatic alarm function |
| CN205231267U (en) * | 2015-11-30 | 2016-05-11 | 中国石油天然气股份有限公司 | Detecting instrument's earthing device |
-
2018
- 2018-04-06 CN CN201810303005.XA patent/CN108918975A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102398867A (en) * | 2011-11-02 | 2012-04-04 | 中联重科股份有限公司 | Anti-tipping method and system for crane |
| KR20150043042A (en) * | 2013-10-14 | 2015-04-22 | 한국전기연구원 | Design Method for Reduction of 1-ph Fault Current Satisfying Effective Grounding Criterion Without Neutral Impedance Device in Transformer Substation |
| CN204407625U (en) * | 2015-02-17 | 2015-06-17 | 国家电网公司 | Intelligent temporary ground wire |
| CN204649882U (en) * | 2015-05-08 | 2015-09-16 | 宁夏中科天际防雷科技有限公司 | Lightning protection test macro |
| CN205231267U (en) * | 2015-11-30 | 2016-05-11 | 中国石油天然气股份有限公司 | Detecting instrument's earthing device |
| CN105527499A (en) * | 2015-12-31 | 2016-04-27 | 刘雷 | Grounding resistance detection and analysis system with automatic alarm function |
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| PB01 | Publication | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20181130 |