CN214479569U - Automatic grounding detection protection device for high-voltage area of mutual inductor - Google Patents
Automatic grounding detection protection device for high-voltage area of mutual inductor Download PDFInfo
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- CN214479569U CN214479569U CN202120661999.XU CN202120661999U CN214479569U CN 214479569 U CN214479569 U CN 214479569U CN 202120661999 U CN202120661999 U CN 202120661999U CN 214479569 U CN214479569 U CN 214479569U
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Abstract
The utility model relates to an automatic grounding detection protection device for a high-voltage area of a mutual inductor, which comprises a control box and an integrally packaged electric grounding component, wherein the electric grounding component comprises a high-voltage conducting rod, the head part of the high-voltage conducting rod is connected with a metal contact, the tail part of the high-voltage conducting rod is connected with a linear motor, and the periphery of the high-voltage conducting rod is provided with a shielding shell; the control box comprises a controller, a resistance sensor, an alarm, a wire and an electrical interlocking interface, wherein the controller is connected with the resistance sensor, the alarm, the wire and the electrical interlocking interface. The device can automatically realize high-voltage grounding, grounding detection, high-voltage discharge and fault interlocking check, reduce the labor intensity of workers and shorten the detection time.
Description
Technical Field
The utility model belongs to the technical field of the mutual-inductor, a mutual-inductor ground connection detection protection device is related to, especially a mutual-inductor high-voltage area automatic ground connection detection protection device.
Background
The mutual inductor is one of the matched important elements of electrical equipment, and when high-voltage electrical tests are carried out on devices such as a standard voltage mutual inductor and a transformer, in order to avoid the influence of high-voltage discharge on equipment and personnel safety, most experimental projects need to carry out grounding detection on the mutual inductor.
In the prior art, the reliability of grounding of the mutual inductor is manually detected, after a high-voltage test of the mutual inductor is finished, after manual discharging is carried out in a high-voltage area by using a discharging rod, grounding measurement is carried out by using instruments such as an electric bridge or a universal meter and the like, and whether reliable grounding is realized is judged; the manual work carries out high voltage discharge and carries out ground connection detection, and complex operation and danger can't be effective, whether accurate judgement mutual-inductor reliably grounds, lack dedicated automatic ground connection and detect protection device.
In view of this, the utility model provides an automatic ground connection detection protection device in mutual-inductor high-voltage area to solve the defect that exists among the prior art, it is very necessary.
SUMMERY OF THE UTILITY MODEL
To the problem that manual operation process is loaded down with trivial details, detect not accurate enough, the utility model provides a mutual-inductor high-voltage area automatic ground connection detection protection device realizes high-pressure ground connection, ground connection detection, high-pressure discharge and trouble-linked troubleshooting automatically, reduces staff's intensity of labour, shortens check-out time.
In order to achieve the above purpose, the utility model provides the following technical scheme:
an automatic grounding detection protection device for a high-voltage area of a mutual inductor comprises a control box and an integrally packaged electric grounding assembly, wherein the electric grounding assembly comprises a high-voltage conducting rod, the head of the high-voltage conducting rod is connected with a metal contact, the tail of the high-voltage conducting rod is connected with a linear motor, and a shielding shell is arranged on the periphery of the high-voltage conducting rod; the control box comprises a controller, a resistance sensor, an alarm, a wire and an electrical interlocking interface, wherein the controller is connected with the resistance sensor, the alarm, the wire and the electrical interlocking interface. A grounding resistance value setting module is arranged in the controller; according to the test field condition, the grounding resistance value is automatically set through the grounding resistance value setting module, after detection, if the grounding resistance value between the high-voltage area inside the mutual inductor and the grounding grid is smaller than or equal to the set grounding resistance value, the grounding is normal, and otherwise, the grounding is abnormal.
Preferably, the bottom end of the metal contact is provided with a spring structure; the automatic contraction of the metal contact is realized through the spring structure, the metal contact extends forwards when the spring structure is compressed, and the metal contact automatically contracts backwards when the spring structure is reset.
Preferably, the shielding shell is provided with a metal flange, and the metal flange fixedly encapsulates the high-voltage conducting rod, the linear motor and the shielding shell together; the high-voltage conducting rod, the linear motor and the shielding shell are packaged into an integrated structure through the metal flange, and the electric grounding assembly can be fixed on the mutual inductor through the metal flange.
Preferably, the shielding shell is made of copper; electromagnetic interference can be effectively shielded through the shielding shell, and the adverse effect of the high-voltage conducting rod and the metal contact on an electric field of a high-voltage area inside the mutual inductor is avoided.
Preferably, the alarm is connected with a buzzer and a light emitting diode; the buzzer sounds and the light emitting diode flashes to give an alarm to prompt a user that the mutual inductor loop is not grounded or grounded.
Preferably, the control box is also provided with a power interface; and the power supply system is accessed through the power interface to supply power for the control box.
The beneficial effects of the utility model reside in that, after using the automatic ground connection detection protection device in mutual-inductor high-voltage area, with the automatic mode that process improvements such as high-pressure discharge, high-pressure ground connection and ground connection detection are a key interlock control, replaced manual operation, reduce field test personnel's intensity of labour by a wide margin, compressed ground connection check-out time, improved test personnel's work safety nature, effectively avoid equipment damage, personnel injured's the condition. Through the contrast discovery, original manual detection's mode needs 2 testing personnel to operate with the help of extra instrument at least, and all need spend 20 to 30 minutes time at every turn of operation, uses mutual-inductor high-voltage area automatic ground connection to detect protection device after, and the time that whole ground connection detected, high-voltage discharge, fault interlock investigation only need 1 to 2 minutes, and efficiency promotes more than 10 times, and the accuracy improves by a wide margin.
Therefore, compared with the prior art, the utility model has the substantive characteristics and the progress, and the beneficial effects of the implementation are also obvious.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic view of the internal structure of the electric ground assembly.
Fig. 2 is a functional block diagram of the control box.
Fig. 3 is a connection schematic diagram of an application process of the automatic grounding detection protection device in the high-voltage area of the mutual inductor.
The system comprises a control box 1, a controller 1.1, a resistance sensor 1.2, an alarm 1.3, an electrical interlocking interface 1.4, a lead 1.5, a buzzer 1.6, a light emitting diode 1.7, a grounding resistance value setting module 1.8, an electric grounding component 2, a high-voltage conducting rod 3, a metal contact 4, a shielding shell 5, a spring structure 6, a linear motor 7, a metal flange 8, a mutual inductor 9, a mutual inductor internal high-voltage shielding cover 10, an interlocking cable 11, a mutual inductor control system 12 and a grounding network 13.
Detailed Description
In order to make the technical solutions in the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.
As shown in fig. 1 to 3, the utility model provides an automatic grounding detection protection device for high voltage area of mutual inductor, which comprises a control box 1 and an integrally packaged electric grounding component 2; the electric grounding assembly 2 comprises a high-voltage conducting rod 3, the head of the high-voltage conducting rod 3 is connected with a metal contact 4, the bottom end of the metal contact 4 is provided with a spring structure 6, the metal contact 4 is automatically contracted through the spring structure 6, the metal contact 4 extends forwards when the spring structure 6 is compressed, and the metal contact 4 is automatically contracted backwards when the spring structure 6 is reset; the tail part of the high-voltage conducting rod 3 is connected with a linear motor 7; the shielding shell 5 is arranged on the periphery of the high-voltage conducting rod 3, the shielding shell 5 is made of copper, electromagnetic interference can be effectively shielded through the shielding shell 5, and adverse effects of the high-voltage conducting rod 3 and the metal contact 4 on an electric field of a high-voltage area in the mutual inductor are avoided; the shielding shell 5 is provided with a metal flange 8, the metal flange 8 fixedly encapsulates the high-voltage conducting rod 3, the linear motor 7 and the shielding shell 5 together, the high-voltage conducting rod 3, the linear motor 7 and the shielding shell 5 are encapsulated into an integrated structure through the metal flange 8, and the electric grounding component 2 can be further fixed on the mutual inductor 9 through the metal flange 8.
The control box 1 comprises a controller 1.1, a resistance sensor 1.2, an alarm 1.3, a lead 1.5 and an electric interlocking interface 1.4, wherein the controller 1.1 is connected with the resistance sensor 1.2, the alarm 1.3, the lead 1.5 and the electric interlocking interface 1.4; a grounding resistance value setting module 1.8 is arranged in the controller 1.1; according to the test field condition, the grounding resistance value is automatically set through the grounding resistance value setting module 1.8, after detection, if the grounding resistance value between the high-voltage area inside the mutual inductor and the grounding grid 13 is smaller than or equal to the set grounding resistance value, the grounding is normal, otherwise, the grounding is abnormal; the alarm 1.3 is connected with a buzzer 1.6 and a light-emitting diode 1.7; the buzzer 1.6 sounds and the light emitting diode 1.7 flashes to give an alarm to prompt a user that the mutual inductor loop is poorly grounded or ungrounded; the control box 1 is also provided with a power interface; the power supply system is connected to the power supply interface to supply power to the control box 1, for example, the power supply interface can be connected to an external independent power supply or a power supply of the transformer control system 12.
The application process of the device is as follows:
step 1: the electric grounding component 2 is integrated on the shell of the mutual inductor 9 in advance, the installation position corresponds to the high-voltage area inside the mutual inductor, and the metal contact 4 is in close contact with the high-voltage shielding cover 10 inside the mutual inductor when the electric grounding component 2 is not electrified.
Step 2: the electric grounding component 2 is connected to the control box 1 through a lead 1.5, then the control box 1 is connected to the grounding grid 13, and the three are connected in series into the same loop through the lead 1.5.
And step 3: connecting the electrical interlock interface 1.4 to the transformer control system 12 using the interlock cable 11; the power supply is connected to the control box 1 through the power supply interface, the power supply of the mutual inductor control system 12 can be connected, and the external power supply can also be independently connected.
And 4, step 4: after mutual-inductor major loop power switch on, control box 1 automatic switch on, through resistance sensor 1.2 automated inspection mutual-inductor inside high voltage district and the earth mat 13 between the ground resistance value, if testing result less than or equal to the ground resistance value of settlement, it is normal to show ground connection, linear electric motor 7 release this moment is to the driving force of high-voltage conducting rod 3, metal contact 4 is automatic to shrink backward to predetermineeing safe position, metal contact 4 breaks away from the contact with the inside high-voltage shield cover 10 of mutual-inductor, the normal power supply of mutual-inductor major loop, test on next step. If the detection result is larger than the set grounding resistance value, the grounding is abnormal, at the moment, the high-voltage conducting rod 3 of the electric grounding component 2 is still in close contact with the high-voltage shielding cover 10 in the mutual inductor, the main circuit of the mutual inductor cannot supply power, the buzzer 1.6 and the light-emitting diode 1.7 give an alarm, the condition that the main circuit of the mutual inductor is poor in grounding or not grounded is shown, and the mutual inductor control system 12 cannot perform the next action before the fault of the mutual inductor is solved.
And 5: the mutual inductor 9 successfully finishes the test, after the voltage of a main loop of the mutual inductor is reduced to a zero position or the test is interrupted due to special conditions, the control box 1 receives a corresponding signal of the mutual inductor control system 12 at the moment, the linear motor 7 in the electric grounding assembly 2 pushes the high-voltage conducting rod 3 to move forwards, the metal contact 4 is in contact with the high-voltage shielding cover 10 in the mutual inductor, the residual voltage of a high-voltage area of the mutual inductor is released into the grounding grid 13 through the lead 1.5, the mutual inductor 9 can be ensured to be fully discharged, and a tester can work on the next step.
Although the present invention has been described in detail by referring to the drawings in conjunction with the preferred embodiments, the present invention is not limited thereto. Various equivalent modifications or substitutions can be made on the embodiments of the present invention by those skilled in the art without departing from the spirit and substance of the present invention, and these modifications or substitutions are intended to be within the scope of the present invention/any person skilled in the art can easily conceive of changes or substitutions within the technical scope of the present invention.
Claims (6)
1. The automatic grounding detection protection device for the high-voltage area of the mutual inductor is characterized by comprising a control box and an integrally packaged electric grounding assembly, wherein the electric grounding assembly comprises a high-voltage conducting rod, the head of the high-voltage conducting rod is connected with a metal contact, the tail of the high-voltage conducting rod is connected with a linear motor, and a shielding shell is arranged on the periphery of the high-voltage conducting rod; the control box comprises a controller, a resistance sensor, an alarm, a wire and an electrical interlocking interface, wherein the controller is connected with the resistance sensor, the alarm, the wire and the electrical interlocking interface.
2. The automatic ground detection and protection device for the high-voltage area of the mutual inductor according to claim 1, wherein a spring structure is arranged at the bottom end of the metal contact.
3. The automatic ground detection protection device for the high-voltage area of the mutual inductor according to claim 2, wherein a metal flange is arranged on the shielding shell, and the metal flange fixedly encapsulates the high-voltage conducting rod, the linear motor and the shielding shell together.
4. The automatic ground detection protection device for the high-voltage area of the mutual inductor according to claim 3, wherein the shielding case is made of copper.
5. The automatic grounding detection protection device for the high-voltage area of the mutual inductor according to claim 3 or 4, wherein the alarm is connected with a buzzer and a light-emitting diode.
6. The automatic grounding detection protection device for the high-voltage area of the mutual inductor according to claim 5, wherein the control box is further provided with a power interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120661999.XU CN214479569U (en) | 2021-03-31 | 2021-03-31 | Automatic grounding detection protection device for high-voltage area of mutual inductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120661999.XU CN214479569U (en) | 2021-03-31 | 2021-03-31 | Automatic grounding detection protection device for high-voltage area of mutual inductor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214479569U true CN214479569U (en) | 2021-10-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120661999.XU Active CN214479569U (en) | 2021-03-31 | 2021-03-31 | Automatic grounding detection protection device for high-voltage area of mutual inductor |
Country Status (1)
| Country | Link |
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| CN (1) | CN214479569U (en) |
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2021
- 2021-03-31 CN CN202120661999.XU patent/CN214479569U/en active Active
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| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20211214 Address after: 271000 No. 10 Longtan South Road, hi tech Zone, Shandong, Tai'an Patentee after: SHANDONG TAIKAI POWER ELECTRIC Co.,Ltd. Address before: 271000 No. 11526 Longtan South Road, Taian High-tech Zone, Shandong Province Patentee before: Shandong taikai Testing Co.,Ltd. |
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| TR01 | Transfer of patent right |