CN212784495U - High-pressure metering protection device - Google Patents
High-pressure metering protection device Download PDFInfo
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- CN212784495U CN212784495U CN202021718147.1U CN202021718147U CN212784495U CN 212784495 U CN212784495 U CN 212784495U CN 202021718147 U CN202021718147 U CN 202021718147U CN 212784495 U CN212784495 U CN 212784495U
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- voltage
- transformer
- current transformer
- cabinet
- high pressure
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Abstract
The utility model discloses a high pressure measurement protector, including voltage transformer, high pressure measurement kilowatt-hour meter, current transformer, electrified display, electromagnetic lock, inlet wire cabinet auxiliary contact, shutting return circuit, high-pressure inlet wire switch and current transformer connect, current transformer and high pressure measurement kilowatt-hour meter are connected, high pressure measurement kilowatt-hour meter and voltage transformer are connected. The utility model has the advantages of reliable and reasonable design, and compared with the original structure, the utility model can prevent the PT handcart from connecting or disconnecting the voltage transformer under the condition that the high-voltage incoming line cabinet is switched on and electrified, and prevent the occurrence of arcing; and meanwhile, the high-voltage front and rear doors are locked and protected by a sensor, a live display, an electromagnetic lock and the like in the high-voltage insulator, so that the occurrence of electric shock accidents caused by the opening operation of the front and rear doors by people is prevented, and the safety and reliability of power transmission and operation are improved.
Description
Technical Field
The utility model relates to a high-pressure metering cabinet technical field specifically is a high-pressure metering protector.
Background
The handcart type high-voltage metering cabinet is manufactured and assembled in a factory in advance, the handcart type high-voltage metering cabinet comprises a high-voltage transformer, a high-voltage current transformer, a high-voltage insulator, a high-voltage electrified display, a condensation controller, a signal lamp and the like, a voltage transformer primary circuit can be switched on and off through a PT handcart, under the high-voltage electrified condition, accidents are easily caused by PT operation, and personal injury and economic loss are caused.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a high pressure measurement protector has solved under the high-voltage live condition, carries out the problem that the PT operation causes the accident easily.
In order to achieve the above object, the utility model provides a following technical scheme: a high-voltage metering protection device comprises a voltage transformer, a high-voltage metering watt-hour meter, a current transformer, a live display, an electromagnetic lock, an auxiliary contact of a wire inlet cabinet and a locking loop, wherein the high-voltage wire inlet switch is connected with the current transformer, the current transformer is connected with the high-voltage metering watt-hour meter, and the high-voltage metering watt-hour meter is connected with the voltage transformer;
the auxiliary contact of the incoming line cabinet is connected with the locking loop, the auxiliary contact of the incoming line cabinet is connected with the electrified display, and the electrified display is connected with the electromagnetic lock.
Preferably, the voltage transformer is a JDZX10-10 voltage transformer, and the voltage transformer is connected with a high-voltage incoming line switch.
Preferably, the current transformer is an LZBJ 9-10 type current transformer, and the current transformer is connected with a high-voltage incoming line switch.
Preferably, the electromagnetic lock is installed in the high-voltage metering cabinet, and the electromagnetic lock is connected with the front door and the rear door of the high-voltage metering cabinet.
Compared with the prior art, the beneficial effects of the utility model are as follows:
the utility model has the advantages of reliable and reasonable design, and compared with the original structure, the utility model can prevent the PT handcart from connecting or disconnecting the voltage transformer under the condition that the high-voltage incoming line cabinet is switched on and electrified, and prevent the occurrence of arcing; and meanwhile, the high-voltage front and rear doors are locked and protected by a sensor, a live display, an electromagnetic lock and the like in the high-voltage insulator, so that the occurrence of electric shock accidents caused by the opening operation of the front and rear doors by people is prevented, and the safety and reliability of power transmission and operation are improved.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: 1. a voltage transformer; 2. a high-voltage metering watt-hour meter; 3. a current transformer; 4. a charged display; 5. an electromagnetic lock; 6. auxiliary contacts of the incoming line cabinet; 7. a closed loop; 8. high-voltage incoming line switch.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely 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, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Examples
Referring to fig. 1, a high-voltage metering protection device comprises a voltage transformer 1, a high-voltage metering watt-hour meter 2, a current transformer 3, a live display 4, an electromagnetic lock 5, a wire inlet cabinet auxiliary contact 6, a locking loop 7 and a high-voltage wire inlet switch 8, wherein the high-voltage wire inlet switch 8 is connected with the current transformer 3, the current transformer 3 is connected with the high-voltage metering watt-hour meter 2, and the high-voltage metering watt-hour meter 2 is connected with the voltage transformer 1;
the auxiliary contact 6 of the incoming line cabinet is connected with the locking loop 7, the auxiliary contact 6 of the incoming line cabinet is connected with the electrified display 4, and the electrified display 4 is connected with the electromagnetic lock 5.
Referring to fig. 1, a voltage transformer 1 is a JDZX10-10 type voltage transformer, and the voltage transformer 1 is connected to a high voltage incoming switch 8.
Referring to fig. 1, the current transformer 3 is a LZZBJ9-10 type current transformer, and the current transformer 3 is connected to a high-voltage incoming switch 8.
Referring to fig. 1, the electromagnetic lock 5 is installed in the high-voltage metering cabinet, and the electromagnetic lock 5 is connected to the front and rear doors of the high-voltage metering cabinet.
The utility model discloses the concrete implementation process as follows: when in use, under the normal operation condition, the PT handcart is in a connection state, the LZZBJ9-10 type current transformer 3 measures primary line current in real time and converts the primary line current into measurable low current, the JDZX10-10 type voltage transformer 1 converts 10kV high voltage into measurable low voltage, comprehensive measurement is carried out through the multifunctional combined junction box and the DSSD331 multifunctional electric meter, after the high-voltage incoming line cabinet is powered on, the incoming line breaker is switched on, the normally open auxiliary contact of the incoming line breaker acts, the alternating current 220V power supply acts, the auxiliary contact acts on a PT handcart coil through a miniature breaker, the metering cabinet mechanical interlocking device interlocks the PT handcart, the handcart is prevented from being operated under the condition of high voltage electrification, high-voltage arc discharge is prevented, meanwhile, the normally closed point of the electrified display device of the high-voltage incoming line cabinet acts to cut off the electromagnetic locks 5 of the front door and the rear door of the cabinet, and the front door and the rear door are, the safety protection performance is improved. When the high-voltage incoming line cabinet breaker is switched on, an action signal is transmitted to the metering cabinet handcart locking device through the normally closed auxiliary contact to interlock the PT handcart and limit the operation of the handcart. The PT metering handcart locking device is provided with signals through the high-voltage incoming line cabinet auxiliary contacts 6, after the high-voltage incoming line cabinet breaker is switched on, the normally-closed points of the breaker auxiliary contacts are disconnected, the PT handcart interlocking device in the metering cabinet is powered off, mechanical interlocking is generated, and the handcart cannot be moved out and shaken in. High-voltage primary voltage induction generates induction voltage through a high-voltage insulator and a sensor thereof, high-voltage electrified signals are transmitted to the high-voltage electrified display 4, and a normally-closed point in the high-voltage electrified display 4 acts to cut off the electromagnetic locks 5 of the front door and the rear door of the high-voltage metering cabinet, so that the front cabinet door and the rear cabinet door cannot be opened, and the protection grade is improved. After the high-voltage incoming line breaker is switched on, the sensor in the high-voltage insulator in the high-voltage metering cabinet transmits a charged signal to the high-voltage charged display 4, the high-voltage charged display shows that a normally closed point is broken, so that the electromagnetic lock 5 control loop is broken, the electromagnetic lock 5 is powered off and locked, the operation of the electromagnetic lock 5 cannot be realized, the front cabinet door and the rear cabinet door cannot be opened under the condition that the high-voltage metering cabinet is electrified, the electric shock accident caused by the manual operation of opening the front cabinet door and the rear cabinet door can be realized under the charged condition of the high-voltage metering cabinet, and the safety and reliability of the high-voltage.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. The utility model provides a high pressure measurement protector, includes that voltage transformer (1), high pressure measure with electric meter (2), current transformer (3), electrified display (4), electromagnetic lock (5), inlet wire cabinet auxiliary contact (6), shutting return circuit (7), high-pressure inlet wire switch (8), its characterized in that: the high-voltage incoming switch (8) is connected with the current transformer (3), the current transformer (3) is connected with the high-voltage metering watt-hour meter (2), and the high-voltage metering watt-hour meter (2) is connected with the voltage transformer (1);
the auxiliary contact (6) of the inlet wire cabinet is connected with the locking loop (7), the auxiliary contact (6) of the inlet wire cabinet is connected with the electrified display (4), and the electrified display (4) is connected with the electromagnetic lock (5).
2. A high pressure metering guard as claimed in claim 1 wherein: the voltage transformer (1) is a JDZX10-10 type voltage transformer, and the voltage transformer (1) is connected with a high-voltage incoming line switch (8).
3. A high pressure metering guard as claimed in claim 1 wherein: the current transformer (3) is an LZBJ 9-10 type current transformer, and the current transformer (3) is connected with a high-voltage incoming line switch (8).
4. A high pressure metering guard as claimed in claim 1 wherein: the electromagnetic lock (5) is installed in the high-voltage metering cabinet, and the electromagnetic lock (5) is connected with the front door and the rear door of the high-voltage metering cabinet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021718147.1U CN212784495U (en) | 2020-08-18 | 2020-08-18 | High-pressure metering protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021718147.1U CN212784495U (en) | 2020-08-18 | 2020-08-18 | High-pressure metering protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212784495U true CN212784495U (en) | 2021-03-23 |
Family
ID=75052594
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021718147.1U Active CN212784495U (en) | 2020-08-18 | 2020-08-18 | High-pressure metering protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212784495U (en) |
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2020
- 2020-08-18 CN CN202021718147.1U patent/CN212784495U/en active Active
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