CN210798538U - Protective device for opening transformer cabinet door in control cabinet - Google Patents
Protective device for opening transformer cabinet door in control cabinet Download PDFInfo
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- CN210798538U CN210798538U CN201921168924.7U CN201921168924U CN210798538U CN 210798538 U CN210798538 U CN 210798538U CN 201921168924 U CN201921168924 U CN 201921168924U CN 210798538 U CN210798538 U CN 210798538U
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- transformer
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- cabinet door
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Abstract
The utility model discloses a protective device for opening transformer cabinet door in a control cabinet, which comprises a cabinet body, a cabinet door hinged with the cabinet body and a transformer arranged in the cabinet body, wherein the transformer comprises a primary coil, a magnetic core and a secondary coil connected with a load through a circuit; the circuit is sleeved with a current mutual inductance coil, the signal output end of the current mutual inductance coil is connected with a current signal collector which is arranged on the inner wall of the cabinet body and used for collecting current signals, and the output end of the current signal collector is connected with a controller which is arranged on the inner wall of the cabinet body; the top wall of the cabinet body and the inner wall of the cabinet door corresponding to the cabinet body are provided with electromagnetic locks used for realizing the locking function under the control of the controller, and the controlled end of the electromagnetic lock is connected with the output end of the controller. The utility model discloses guarantee under the transformer electrified condition, the cabinet door can't be opened to guarantee maintainer's personal safety effectively, also can remind the maintainer transformer still to be in electrified state simultaneously.
Description
Technical Field
The utility model relates to a switch board protector technical field, especially a protector is opened to transformer cabinet door in switch board.
Background
The transformer has the main functions of: voltage transformation, current transformation, impedance transformation, isolation, voltage stabilization, etc., and can be classified into: power transformers and special transformers. The transformer is generally installed in the switch board, and the switch board wide application is received the electricity, the power transmission in power plant, industrial and mining enterprise distribution and the electric power system secondary substation.
The existing transformer control cabinet is only provided with a mechanical lock, when the control cabinet is required to be opened to overhaul a transformer, the transformer can be opened only through a key, but whether the transformer is electrified or not can not be judged when the transformer is opened, and if the transformer still has high voltage electricity after the cabinet door is opened, the life safety of an overhaul worker is seriously threatened. Therefore, it is very important to develop a protection device that can open the cabinet door only when the transformer is not charged.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that needs to solve provides a protector is opened to transformer cabinet door in switch board to solve current transformer switch board and only be provided with mechanical lock, can't go to differentiate whether the transformer is electrified, produce the problem of very big threat to maintainer's life safety, with the realization only can open the purpose of cabinet door under the uncharged condition of transformer, with guarantee maintainer's personal safety.
In order to solve the technical problem, the utility model adopts the following technical proposal.
A protection device for opening a transformer cabinet door in a control cabinet comprises a cabinet body, a cabinet door hinged with the cabinet body and a transformer arranged in the cabinet body, wherein the transformer comprises a primary coil connected with alternating current, a magnetic core and a secondary coil connected with a load through a circuit; the circuit is sleeved with a current mutual inductance coil for detecting whether the transformer is electrified, the signal output end of the current mutual inductance coil is connected with a current signal collector which is arranged on the inner wall of the cabinet body and is used for collecting current signals, and the output end of the current signal collector is connected with a controller which is arranged on the inner wall of the cabinet body; the top wall of the cabinet body and the inner wall of the cabinet door corresponding to the cabinet body are provided with electromagnetic locks used for realizing the locking function under the control of the controller, and the controlled end of the electromagnetic lock is connected with the output end of the controller.
Further optimize technical scheme, current mutual inductor is fixed through the vertical fixed plate of fixed setting on cabinet body diapire.
According to the technical scheme, the controller is a single chip microcomputer, and the single chip microcomputer is an MCU single chip microcomputer.
According to the technical scheme, the current signal collector is a C2000-A2-SAX0200-FX3 type current signal collector.
Further optimize technical scheme, the cabinet body corresponds to being provided with mechanical lock on the cabinet door.
Further optimize technical scheme, mechanical lock is including setting up the lockhole on the cabinet body and setting up on the cabinet door and the lock core corresponding with the lockhole.
Due to the adoption of the technical scheme, the utility model has the following technical progress.
The utility model discloses simple structure, current transformer coil is established to the cover on the circuit that adopts to be connected with the secondary coil of transformer, current transformer coil is with induced-current signal feedback to current signal collector, current signal collector is with response information feedback to controller again, through the closed mode of controller control electromagnetic lock, guarantee under the transformer electrified condition, the cabinet door can't be opened to guarantee maintainer's personal safety effectively, also can remind maintainer transformer still to be in electrified state simultaneously.
The utility model discloses the mechanical lock that sets up on the cabinet body and cabinet door makes opening of cabinet door not only under the uncharged condition of transformer, also must open under the condition that the maintainer of specialty was opened with the key, and then has avoided the broken ring of non-operation personnel to the transformer.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic block diagram of the circuit of the present invention.
Wherein: 1. the cabinet body, 2, transformer, 21, primary coil, 22, magnetic core, 23, secondary coil, 24, circuit, 25, load, 3, current mutual inductance coil, 4, vertical fixed plate, 5, current signal collector, 6, controller, 7, electromagnetic lock, 9, mechanical lock, 91, lockhole, 92, lock core, 10, cabinet door.
Detailed Description
The present invention will be described in further detail with reference to specific embodiments.
A protection device for opening a transformer cabinet door in a control cabinet is shown in figures 1 to 2 and comprises a cabinet body 1, a cabinet door 10 and a transformer 2.
The cabinet body 1 is a rectangular box body structure with a hollow cavity body inside. The cabinet door 10 is hinged with the cabinet body 1 through a hinge.
The transformer 2 is disposed inside the cabinet 1, and the transformer 2 includes a primary coil 21, a magnetic core 22, and a secondary coil 23. The primary coil 21 is connected to an alternating current and the secondary coil 23 is connected to a load 25 via a line 24.
The circuit 24 is sleeved with a current mutual inductor 3, the current mutual inductor 3 is of a closed ring structure, the current mutual inductor 3 is used for detecting whether the transformer 2 is electrified, and when the circuit 24 is provided with current, the current mutual inductor 3 can detect current signals so as to judge whether the transformer 2 is electrified. The current transformer coil 3 is fixed by a vertical fixing plate 4 fixedly arranged on the bottom wall of the cabinet body 1. The current transformer coil 3 of the present invention is a CWT0030AS type current transformer coil.
The signal output end of the current mutual inductance coil 3 is connected with a current signal collector 5, and the current signal collector 5 is arranged on the inner wall of the cabinet body 1 and used for collecting current signals. The current signal collector 5 in the utility model is a C2000-A2-SAX0200-FX3 type current signal collector.
The output end of the current signal collector 5 is connected with a controller 6, and the controller 6 is arranged on the inner wall of the cabinet body 1. The controller 6 is a single chip microcomputer, and the single chip microcomputer is an MCU single chip microcomputer.
The top wall of the cabinet body 1 and the inner wall of the cabinet door 10 corresponding to the cabinet body 1 are provided with an electromagnetic lock 7 in an assembling mode, the electromagnetic lock 7 is used for achieving a locking function under the control of the controller 6, and the controlled end of the electromagnetic lock 7 is connected to the output end of the controller 6. The utility model provides an electromagnetic lock 7 adopts DSN3 type electromagnetic lock.
In addition, in order to realize integration of manual operation and control, a mechanical lock 9 is correspondingly arranged on the cabinet body 1 and the cabinet door 10. The mechanical lock 9 includes a lock hole 91 provided on the cabinet body 1 and a lock cylinder 92 provided on the cabinet door 10 and corresponding to the lock hole 91.
The utility model discloses an actual operation process as follows.
The load 25 is always in communication with the line 24.
When transformer 2 is electrified, the same current that can have on transformer 2's secondary 23 and the circuit 24, current signal will be sensed to current transformer coil 3, and feed back this signal to current signal collector 5, current signal collector 5 feeds back electrified information to controller 6 again, controller 6 control electromagnetic lock 7 is closed, thereby guarantee that cabinet door 10 can't be opened, even under the condition that mechanical lock 9 was opened, guarantee that cabinet door 10 also can't be opened, thereby the personal safety of maintainer has been guaranteed effectively, also can remind maintainer transformer 2 still in electrified state simultaneously.
When the transformer 2 is not charged, the current transformer coil 3 does not sense a current signal and does not feed back information to the current signal collector 5, the current signal collector 5 also does not feed back information to the controller 6, the controller 6 controls the electromagnetic lock 7 to be opened, and meanwhile, the cabinet door 10 can be opened under the condition that the mechanical lock 9 is also opened at the same time.
Claims (6)
1. Protector, its characterized in that are opened to transformer cabinet door in the switch board: the intelligent cabinet comprises a cabinet body (1), a cabinet door (10) hinged with the cabinet body (1) and a transformer (2) arranged in the cabinet body (1), wherein the transformer (2) comprises a primary coil (21) connected with alternating current, a magnetic core (22) and a secondary coil (23) connected with a load (25) through a circuit (24); a current mutual inductance coil (3) for detecting whether the transformer (2) is electrified is sleeved on the circuit (24), the signal output end of the current mutual inductance coil (3) is connected with a current signal collector (5) which is arranged on the inner wall of the cabinet body (1) and used for collecting current signals, and the output end of the current signal collector (5) is connected with a controller (6) which is arranged on the inner wall of the cabinet body (1); an electromagnetic lock (7) used for realizing a locking function under the control of a controller (6) is assembled and arranged on the top wall of the cabinet body (1) and the inner wall of the cabinet door (10) corresponding to the cabinet body (1), and the controlled end of the electromagnetic lock (7) is connected to the output end of the controller (6).
2. The device for preventing opening of transformer cabinet door in control cabinet according to claim 1, wherein: the current mutual inductor (3) is fixed through a vertical fixing plate (4) fixedly arranged on the bottom wall of the cabinet body (1).
3. The device for preventing opening of transformer cabinet door in control cabinet according to claim 1, wherein: the controller (6) is a single chip microcomputer, and the single chip microcomputer is an MCU single chip microcomputer.
4. The device for preventing opening of transformer cabinet door in control cabinet according to claim 1, wherein: the current signal collector (5) is a C2000-A2-SAX0200-FX3 type current signal collector.
5. The device for preventing opening of transformer cabinet door in control cabinet according to claim 1, wherein: the cabinet body (1) and the cabinet door (10) are correspondingly provided with mechanical locks (9).
6. The device for preventing opening of transformer cabinet door in control cabinet according to claim 5, wherein: the mechanical lock (9) comprises a lock hole (91) arranged on the cabinet body (1) and a lock cylinder (92) arranged on the cabinet door (10) and corresponding to the lock hole (91).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921168924.7U CN210798538U (en) | 2019-07-24 | 2019-07-24 | Protective device for opening transformer cabinet door in control cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921168924.7U CN210798538U (en) | 2019-07-24 | 2019-07-24 | Protective device for opening transformer cabinet door in control cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210798538U true CN210798538U (en) | 2020-06-19 |
Family
ID=71229355
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921168924.7U Active CN210798538U (en) | 2019-07-24 | 2019-07-24 | Protective device for opening transformer cabinet door in control cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210798538U (en) |
-
2019
- 2019-07-24 CN CN201921168924.7U patent/CN210798538U/en active Active
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