CN217111235U - Online temperature measuring device for bus copper bar of yellow phosphorus electric furnace transformer - Google Patents

Abstract

The utility model provides an online temperature measuring device of yellow phosphorus electric furnace transformer generating line copper bar, includes transformer and transformer input and output end's insulation support, is equipped with the tap on the insulation support, and the tap passes through the screw connection with the copper bar, and the junction is equipped with temperature measuring device, and temperature measuring device includes a temperature measurement nut that is equipped with in the nut of fastening tap and copper bar, and insulation leads in the temperature measurement nut and fixed connection, the other end and the temperature sensor fixed connection of temperature measuring device are led to the insulation. Through the insulating temperature conduction device, the temperature sensor is not directly connected with the temperature measurement nut with high voltage, the sensor does not need to be required to have higher insulation grade and anti-interference capability, one end of the insulating temperature conduction device is embedded into the temperature measurement nut, the conducted temperature is the temperature inside the nut, and abnormal temperature caused by the abnormal contact resistance of the temperature sensor can be found as early as possible.

Description

Online temperature measuring device for bus copper bar of yellow phosphorus electric furnace transformer

Technical Field

The utility model relates to a diagnostic technical field, especially a yellow phosphorus electric furnace transformer generating line copper bar online temperature measuring device are maintained to plant protection transformer.

Background

The production of yellow phosphorus belongs to high-voltage transformation power supply, the incoming line side of a transformer of a yellow phosphorus electric furnace adopts 110KV voltage, the yellow phosphorus electric furnace is important equipment for producing the yellow phosphorus, the 110KV yellow phosphorus electric furnace consists of the 110KV transformer, a switch mechanism box, a control cabinet, a bus joint, a cable joint, a power transmission and transformation line joint and an isolating switch, and in the long-term operation process, the connection parts of a short-net copper bar contact and the 110KV transformer generate heat due to aging or overlarge contact resistance, so that a mutual inductor is easily burnt out to cause fire and large-area power failure accidents, and serious safety accidents are caused in serious cases.

The existing method for detecting the joint of the copper bar generally comprises the steps that a temperature measuring device is arranged near the joint or a temperature measuring sensor is arranged on the surface of a connecting screw, and because the copper bar and the connecting screw are both provided with high voltage, the sensor is required to be capable of avoiding magnetic field interference caused by current and good insulating property, and because the heating of a contact resistor is a slow deterioration process, the sensor on the surface cannot detect an initial relatively unobvious effect.

Disclosure of Invention

In order to solve the technical problem, the utility model discloses the technical scheme who adopts is:

the utility model provides an online temperature measuring device of yellow phosphorus electric furnace transformer generating line copper bar, includes transformer and transformer input and output end's insulation support, is equipped with the tap on the insulation support, and the tap passes through the screw connection with the copper bar, and the junction is equipped with temperature measuring device, and temperature measuring device includes a temperature measurement nut that is equipped with in the nut of fastening tap and copper bar, and insulation leads in the temperature measurement nut and fixed connection, the other end and the temperature sensor fixed connection of temperature measuring device are led to the insulation.

The parts of the two ends of the insulation heat conduction device, which are connected with the temperature measurement nut and the temperature sensor, are made of insulation heat conduction soft materials and can be bent.

The insulating heat conducting device comprises a long-strip insulating heat conducting sheet, connecting holes are formed in two ends of the insulating heat conducting sheet and used for being connected with a temperature measuring nut and a temperature sensor, and the middle of the insulating heat conducting sheet is wrapped by a vacuum tube and is sealed.

The temperature measuring nut comprises a hexagon nut, a threaded hole connected with a screw is formed in the center of the hexagon nut, an inward-deep notch is formed in a corner of the hexagon nut and used for embedding an insulating heat-conducting fin, grooves used for preventing the screw from being connected are formed in two sides of the notch, and through holes are formed in the grooves.

The insulating heat-conducting fin is connected with the temperature measuring nut by adopting an insulating material.

The insulating heat-conducting fin is connected with one end of the temperature sensor and fixedly connected with the connecting support, and the connecting support is fixedly connected with the transformer shell.

The utility model provides a pair of online temperature measuring device of yellow phosphorus electric furnace transformer generating line copper bar is through insulating temperature device of leading for temperature sensor not with take highly compressed temperature measurement nut lug connection, need not require higher insulation level and interference killing feature for the sensor, and in insulating temperature device one end embedding temperature measurement nut of leading, the temperature of conduction is the inside temperature of nut, can discover the abnormal temperature that its contact resistance brought unusually early.

Drawings

The invention will be further explained with reference to the following figures and examples:

FIG. 1 is a schematic view of an embodiment of the present invention;

FIG. 2 is an enlarged partial view of FIG. 1;

FIG. 3 is an enlarged view of a portion of FIG. 2;

FIG. 4 is a schematic structural diagram of a copper bar;

FIG. 5 is a schematic structural diagram of an insulating thermal conduction device;

FIG. 6 is a sectional view of the insulated thermal conductor;

FIG. 7 is a schematic structural view of a nut for measuring temperature;

FIG. 8 is a cross-sectional view of a temperature measuring nut.

In the figure: the temperature measuring device comprises a transformer 1, an insulating sleeve 2, a copper bar 3, a connecting screw hole 31, a tap 4, a temperature measuring device 5, an insulating temperature conducting device 51, a vacuum tube 511, an insulating heat conducting fin 512, a connecting hole 513, a temperature measuring nut 52, a hexagon nut 521, a threaded hole 522, a notch 523, a groove 524, a through hole 525, a temperature sensor 53 and a connecting support 54.

Detailed Description

As shown in fig. 1-8, an online temperature measuring device for a yellow phosphorus electric furnace transformer bus copper bar comprises a transformer 1 and an insulating sleeve 2 at the input and output ends of the transformer 1, wherein a tap 4 is arranged on the insulating sleeve 2, the tap 4 is connected with the copper bar 3 through a screw, a temperature measuring device 5 is arranged at the joint, the temperature measuring device 5 comprises a temperature measuring nut 52 arranged in a nut for fastening the tap 4 and the copper bar 3, one end of an insulating temperature conducting device 51 is embedded into the temperature measuring nut 52 and is fixedly connected with the same, and the other end of the insulating temperature conducting device 51 is fixedly connected with a temperature sensor 53.

Through the insulation temperature conduction device 51, the temperature sensor 53 is not directly connected with the temperature measurement nut 52 with high voltage, the requirement for higher insulation level and anti-interference capability of the sensor is avoided, one end of the insulation temperature conduction device 51 is embedded into the temperature measurement nut 52, the conducted temperature is the temperature inside the nut, and abnormal temperature caused by abnormal contact resistance can be found as early as possible.

The connection parts of the two ends of the insulated temperature conduction device 51, the temperature measurement nut 52 and the temperature sensor 53 are made of insulated heat conduction soft materials and can be bent.

Through the use of the insulating heat-conducting soft material, the joint of the temperature measuring nut 52 and the insulating heat-conducting device 51 does not need to be in a horizontal posture, so that a certain tolerance position is installed.

The insulating heat conducting device 51 comprises a strip insulating heat conducting sheet 512, connecting holes 513 are formed at two ends of the insulating heat conducting sheet 512, the connecting holes 513 are used for being connected with the temperature measuring nuts 52 and the temperature sensors 53, and the middle part of the insulating heat conducting sheet 512 is wrapped and sealed by the vacuum tube 511.

The insulating heat conducting sheet 512 has good insulating heat conducting property, so that the internal temperature of the temperature measuring nut 52 can be conducted to the other end, the other end is not electrified due to the good insulating property, and the vacuum tube 511 is used for sealing and wrapping the middle part of the temperature measuring nut 52, so that the heat is not dissipated in the conducting process, and the temperature detected by the temperature sensor 53 is the internal temperature of the temperature measuring nut 52.

The insulating thermal conductive sheet 512 is a commercially available product, such as TCK type thermal conductive insulating sheet manufactured by AOK company, and is a flexible material that can conduct heat well and has a good insulating function.

The temperature measuring nut 52 comprises a hexagon nut 521, a threaded hole 522 connected with a screw is arranged in the center of the hexagon nut 521, a notch 523 with inward depth is arranged on a corner of the hexagon nut 521, the notch 523 is used for embedding the insulating heat conducting sheet 512, grooves 524 for preventing the screw from being connected are arranged on two sides of the notch 523, and through holes 525 are arranged in the grooves 524.

Through the notches 523 on the six corners of the hexagon nut 521, the connection can be realized by matching with the soft insulating heat-conducting sheet 512 no matter the angle of the nut, and the connection can also be realized from multiple angles.

The insulating heat-conducting strip 512 is connected with the temperature measuring nut 52 by adopting an insulating material.

The insulating material can adopt ceramic nuts and screws, and can prevent the problem that the metal screws generate contact resistance again.

One end of the insulating heat-conducting fin 512 connected with the temperature sensor 53 is fixedly connected with the connecting bracket 54, and the connecting bracket 54 is fixedly connected with the shell of the transformer 1.

Claims (6)

1. The utility model provides an online temperature measuring device of yellow phosphorus electric furnace transformer generating line copper bar, insulation support (2) including transformer (1) and transformer (1) input and output end, be equipped with tap (4) on insulation support (2), a serial communication port, tap (4) pass through the screw connection with copper bar (3), the junction is equipped with temperature measuring device (5), temperature measuring device (5) include one temperature measurement nut (52) that are equipped with in the nut of fastening tap (4) and copper bar (3), insulating temperature device (51) one end embedding temperature measurement nut (52) in and fixed connection, the other end and temperature sensor (53) fixed connection of insulating temperature device (51) of leading.

2. The on-line temperature measuring device for the bus copper bar of the yellow phosphorus electric furnace transformer as claimed in claim 1, wherein the parts of the two ends of the insulating temperature-conducting device (51) connected with the temperature-measuring nut (52) and the temperature sensor (53) are made of insulating heat-conducting soft materials and can be bent.

3. The on-line temperature measuring device for the bus copper bar of the yellow phosphorus electric furnace transformer as claimed in claim 2, wherein the insulating temperature-conducting device (51) comprises an insulating heat-conducting strip (512) in a long strip shape, connecting holes (513) are formed at two ends of the insulating heat-conducting strip (512), the connecting holes (513) are used for being connected with the temperature measuring nut (52) and the temperature sensor (53), and the middle part of the insulating heat-conducting strip (512) is wrapped and sealed by the vacuum tube (511).

4. The on-line temperature measuring device for the bus copper bar of the yellow phosphorus electric furnace transformer as claimed in claim 3, wherein the temperature measuring nut (52) comprises a hexagonal nut (521), a threaded hole (522) connected with a screw is formed in the center of the hexagonal nut (521), an inward-deep notch (523) is formed in a corner of the hexagonal nut (521), the notch (523) is used for embedding the insulating heat conducting sheet (512), grooves (524) used for preventing the screw from being connected are formed in two sides of the notch (523), and a through hole (525) is formed in the groove (524).

5. The on-line temperature measuring device for the bus copper bar of the yellow phosphorus electric furnace transformer as claimed in claim 4, wherein the insulating heat conducting sheet (512) and the temperature measuring nut (52) are connected by using an insulating material.

6. The on-line temperature measuring device for the bus copper bar of the yellow phosphorus electric furnace transformer as claimed in claim 4, wherein one end of the insulating heat conducting fin (512) connected with the temperature sensor (53) is fixedly connected with the connecting bracket (54), and the connecting bracket (54) is fixedly connected with the shell of the transformer (1).

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