CN219178763U

CN219178763U - Electrical contact temperature measuring device of electrical cabinet

Info

Publication number: CN219178763U
Application number: CN202320337967.3U
Authority: CN
Inventors: 贾宇飞; 王磊
Original assignee: Baotou Second Thermal Power Plant North United Power Corp
Current assignee: Baotou Second Thermal Power Plant North United Power Corp
Priority date: 2023-02-28
Filing date: 2023-02-28
Publication date: 2023-06-13
Anticipated expiration: 2033-02-28

Abstract

The utility model discloses an electrical contact temperature measuring device of an electrical cabinet. An electrical cabinet electrical contact temperature measurement device comprising: the oil box is made of copper, insulating oil is filled in the oil box, the whole oil box is of a U-shaped structure, wire contacts are surrounded by three sides of the conveying oil box, an insulating plug is mounted on one side of the oil box, and a temperature sensor is mounted on the insulating plug. The temperature measuring device for the electrical contact of the electrical cabinet provided by the utility model enables the temperature monitored by the temperature sensor to be more accurate.

Description

Electrical contact temperature measuring device of electrical cabinet

Technical Field

The utility model relates to the technical field of temperature measurement of electrical equipment, in particular to an electrical cabinet electrical contact temperature measuring device.

Background

There are numerous electrical devices in power plants, but many are high voltage devices, including electrical cabinets, which are mainly used in the processes of generating, transmitting, distributing and converting electrical energy in electrical power systems, and controlling and protecting electrical equipment. The components in the electric cabinet mainly comprise control components, a frequency converter, a circuit breaker, an isolating switch, a mutual inductor, various protection devices and the like, and the electric cabinet is internally provided with a plurality of high-voltage joints (joints), so that the resistance at the joints is large, high temperature is easy to generate when current is transmitted at the joints, and the long-time high temperature is unfavorable for the safe use of equipment, so that the joints are required to be monitored.

The utility model patent with the publication number of CN217358775U discloses an electrical contact temperature measuring device of an electrical cabinet, which comprises a protection mechanism for protecting internal electrical equipment and a lifting mechanism for driving a temperature sensor to lift, wherein the lifting mechanism is fixed above the protection mechanism, and the device can monitor the temperature of a contact point, but has certain defects in the monitoring process: the temperature of the junction is judged by monitoring the temperature of air near the junction, and more places where high temperature can be generated in the electrical cabinet are needed, so that the temperature rise cannot be determined to be the high temperature generated at the junction, misjudgment is easy to be caused, and the error is large.

Therefore, it is necessary to provide a temperature measuring device for electrical contacts of an electrical cabinet to solve the above technical problems.

Disclosure of Invention

Aiming at the situation, in order to overcome the defects in the prior art, the utility model provides the temperature measuring device for the electrical contact of the electrical cabinet, which enables the temperature monitored by the temperature sensor to be more accurate.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

an electrical cabinet electrical contact temperature measurement device comprising: the oil box is made of copper, insulating oil is filled in the oil box, the whole oil box is of a U-shaped structure, wire contacts are surrounded by three sides of the conveying oil box, an insulating plug is mounted on one side of the oil box, and a temperature sensor is mounted on the insulating plug.

Preferably, the oil box is of an integrated structure, two copper pipes are arranged on the oil box, two copper pipes are internally penetrated with the same screw rod, and the screw rod penetrates through the copper pipes and simultaneously penetrates through two wires.

Preferably, the oil box comprises two independent boxes and a plurality of telescopic pipe groups, the two independent boxes are communicated through the telescopic pipe groups, so that the space inside the oil box is communicated, the temperature transmission inside insulating oil is facilitated, and meanwhile, the telescopic pipe groups can be lengthened or shortened, so that the clamping of wires with different thicknesses is realized.

Preferably, the telescopic tube group includes a thick tube and a thin tube, and the thin tube is inserted into the thick tube and movable therein.

Preferably, a baffle is arranged at one end of the side of the thick pipe, a limiting plate is arranged at one end of the thin pipe, and when the thick pipe and the thin pipe reversely move to a certain distance, the thick pipe and the thin pipe are prevented from being separated under the blocking of the baffle and the limiting plate.

Preferably, the limiting plate is provided with a sealing ring, and the sealing ring plays a role in sealing, so that insulating oil cannot flow out.

Compared with the prior art, the utility model has the following beneficial effects:

(1) According to the utility model, the oil box can timely absorb heat generated at the wire joint and transfer the heat to the insulating oil in the wire joint, and the insulating oil is more stable in heat transfer in space, so that the temperature monitored by the temperature sensor is more accurate;

(2) The telescopic tube group can be lengthened or shortened, so that the wires with different thicknesses can be clamped, the independent box is tightly contacted with the wires, and the heat at the joint is better absorbed.

Drawings

FIG. 1 is a schematic diagram of a temperature measuring device for electrical contacts of an electrical cabinet according to the present utility model;

FIG. 2 is a schematic diagram of a cross-sectional structure of an electrical junction temperature measuring device for an electrical cabinet provided by the utility model;

FIG. 3 is an exploded view of FIG. 2;

FIG. 4 is a schematic structural diagram of the electrical contact temperature measuring device of the electrical cabinet provided by the utility model;

FIG. 5 is an enlarged view of portion A of FIG. 4;

fig. 6 is a schematic structural diagram of the electrical contact temperature measuring device for an electrical cabinet provided by the utility model.

Wherein, the names corresponding to the reference numerals are: 1-oil box, 11-independent box, 2-insulating plug, 3-temperature sensor, 4-copper pipe, 5-screw rod, 6-nut, 7-thick pipe, 71-baffle, 8-tubule, 81-limiting plate, 82-sealing ring.

Detailed Description

The utility model will be further illustrated by the following description and examples, which include but are not limited to the following examples.

Example 1

As shown in fig. 1 to 6, the electrical contact temperature measuring device for an electrical cabinet provided by the utility model comprises: the oil box 1, the material of oil box 1 is copper, the insulating oil is equipped with in the oil box 1, oil box 1 wholly is U-shaped structure, and wire contact is surrounded by carrying oil box 1 trilateral one side of oil box 1 install insulating stopper 2 install temperature sensor 3 on the insulating stopper 2, temperature sensor 3 carries out temperature monitoring to the insulating oil in the oil box 1, and when wire contact department temperature risees, the insulating oil of its inside can be given through oil box 1 to heat to make the temperature of insulating oil rise, temperature sensor 3 monitors the temperature of insulating oil constantly, just can grasp wire contact department temperature in real time, makes the detection of wire contact department temperature more accurate.

Example 2

As shown in fig. 1-3, the oil box 1 is of an integral structure, two copper pipes 4 are arranged on the oil box 1, two copper pipes 4 are internally penetrated with the same screw 5, the screw 5 penetrates through the copper pipes 4 and simultaneously penetrates through two wires, a nut 6 is arranged on the screw 5, and the nut 6 is matched with the screw 5 to fix the two wires and the oil box 1 together.

Example 3

As shown in fig. 4-6, the oil box 1 includes two independent boxes 11 and a plurality of telescopic tube sets, and the two independent boxes 11 are communicated through the plurality of telescopic tube sets, so that the space inside the oil box is communicated, the temperature transmission inside insulating oil is facilitated, meanwhile, the telescopic tube sets can be lengthened or shortened, the clamping of wires with different thicknesses is realized, the independent boxes 11 are in tight contact with the wires, and the heat at the joint is better absorbed.

Further, the telescopic tube group includes a thick tube 7 and a thin tube 8, and the thin tube 8 is inserted into the thick tube 7 and is movable in the thick tube 7, thereby changing the interval between the two independent boxes 11.

Further, a baffle 71 is disposed at one end of the rough pipe 7, a limit plate 81 is disposed at one end of the fine pipe 8, and when the rough pipe 7 and the fine pipe 8 move reversely to a certain distance, they are not separated from each other by the baffle 71 and the limit plate 81.

Further, the limiting plate 81 is provided with a sealing ring 82, and the sealing ring 82 plays a role in sealing, so that insulating oil cannot flow out.

The device is also provided with a controller, the temperature sensor 3 is connected with the controller, the controller can be connected with an alarm, when the temperature sensor 3 detects that the temperature of the insulating oil is ultrahigh, a signal is transmitted to the controller, and the controller starts the alarm;

the temperature sensor 3 can also be connected with a super Wen Jiedian on a protector inside the electrical cabinet, and once the temperature exceeds the standard, the protector can disconnect the power supply and report a fault.

The above embodiment is only one of the preferred embodiments of the present utility model, and should not be used to limit the scope of the present utility model, but all the insubstantial modifications or color changes made in the main design concept and spirit of the present utility model are still consistent with the present utility model, and all the technical problems to be solved are included in the scope of the present utility model.

Claims

1. An electrical junction temperature measurement device for an electrical cabinet, comprising:

the oil box (1), insulating oil is filled in the oil box (1), the whole U-shaped structure of oil box (1), wire contact are surrounded by three sides of carrying oil box (1), insulating stopper (2) are installed to one side of oil box (1) install temperature sensor (3) on insulating stopper (2).

2. The electrical junction temperature measuring device of the electrical cabinet according to claim 1, wherein two copper pipes (4) are arranged on the oil box (1), and the same screw (5) penetrates through the two copper pipes (4).

3. An electrical cabinet electrical contact temperature measuring device according to claim 2, characterized in that the oil box (1) is of unitary construction.

4. An electrical junction temperature measuring device for electrical cabinets according to claim 2, characterized in that the oil box (1) comprises two independent boxes (11) and a plurality of telescopic tube groups, through which the two independent boxes (11) are connected.

5. An electrical cabinet electrical contact temperature measuring device according to claim 4, characterized in that the telescopic tube set comprises a thick tube (7) and a thin tube (8), the thin tube (8) being inserted into the thick tube (7) and being movable in the thick tube (7).

6. The electrical junction temperature measuring device for electrical cabinets according to claim 5, wherein a baffle (71) is provided at one end of the thick tube (7) side, and a limit plate (81) is provided at one end of the thin tube (8).

7. An electrical cabinet electrical contact temperature measuring device according to claim 6, characterized in that the limiting plate (81) is provided with a sealing ring (82).