CN115165131A - GIS isolator contact temperature monitoring device - Google Patents

Abstract

GIS isolator contact temperature monitoring devices relates to temperature monitoring technical field for solve with the GIS equipment casing temperature of measuring as the GIS isolator whether unusual judgement basis of contact temperature exists the big problem of error. The GIS isolating switch comprises a fixing part, wherein the fixing part is sleeved on a static contact of a GIS isolating switch and is a heat conduction insulating part, a plurality of heat conduction parts uniformly arranged along the circumferential direction are arranged in the side wall of the fixing part, a plurality of thermocouples are arranged along the circumference of the fixing part, probes of the thermocouples stretch into the heat conduction parts, leads of the thermocouples penetrate through the side wall of the fixing part and then stretch into a wire pipe, one end of the wire pipe is in contact with the side wall of the fixing part, and the other end of the wire pipe extends towards one side far away from GIS equipment. The thermocouple is positioned on the static contact, so that the temperature of the static contact can be measured conveniently; the temperature of a plurality of points on the static contact is measured, and the measured highest temperature is used as a detection result, so that missing detection can be avoided, and the phenomenon of abnormal temperature of the static contact can be found in time.

Description

GIS isolating switch contact temperature monitoring device

technical field

The invention relates to the technical field of temperature monitoring, in particular to a contact temperature monitoring device of a GIS isolation switch.

Background technique

When the dynamic and static contacts of the GIS isolation switch are in poor contact, the temperature of the dynamic and static contacts will rise abnormally, which will cause the insulation aging of the GIS equipment and affect the safe operation of the electrical equipment. In the prior art, when the temperature of the GIS isolation switch is monitored, the temperature sensor is set on the GIS equipment shell. In this way, the temperature sensor detects the temperature of the GIS equipment shell, not the temperature of the dynamic and static contacts of the GIS isolation switch. Therefore, there is a large deviation in the temperature detection data, which is easy to cause the missed detection of the contact temperature being too high, and the GIS equipment shell temperature is used as the basis for judging whether the contact temperature of the GIS isolation switch is abnormal, and there is a large error.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a GIS isolation switch contact temperature monitoring device, which is used to solve the problem of large errors in using the measured GIS equipment casing temperature as the judgment basis for whether the GIS isolation switch contact temperature is abnormal.

The technical scheme adopted by the present invention to solve the technical problem is as follows: A GIS isolating switch contact temperature monitoring device, comprising a ring-shaped fixing piece, the fixing piece is sleeved on the static contact of the GIS isolating switch, and the fixing piece is a heat-conducting insulating piece , there are several heat conduction parts uniformly arranged in the circumferential direction in the side wall of the fixing piece, several thermocouples are arranged along the circumference of the fixing piece, the probes of the thermocouples extend into the heat conduction part, and the thermocouples The wire passes through the side wall of the fixing piece and then extends into the wire tube, one end of the wire tube is in contact with the side wall of the fixing piece, and the other end of the wire tube extends to the side away from the GIS equipment.

Further, the fixing member is a heat-conducting insulating elastic rubber member, and the side wall of the fixing member has a plurality of isolation cavities, and the isolation cavities are arranged so that the side wall of the fixing member forms a plurality of heat conduction parts.

Further, an elastic member is provided in the isolation cavity.

Further, the outer side wall of the fixing member has a wire groove, and the wire extends into the wire groove.

Further, the outer side of the fixing member has an annular side plate, and the side plate closes the wire groove.

Further, the two end surfaces of the fixing member are provided with sealing plates, and the sealing plates are heat insulating members.

Further, the heat conduction part has a probe hole, and the bottom of the probe hole is close to the inner side wall of the fixing member.

The beneficial effects of the present invention are:

(1) The thermocouple is located on the static contact, and it is more convenient to measure the temperature of the static contact;

(2) An insulating and heat-conducting fixing piece is arranged on the outside of the static contact. By measuring the temperature of the fixing piece as the temperature of the static contact, the thermocouple and the static contact are insulated to protect the thermocouple;

(3) By measuring the temperature of multiple points on the static contact, and using the highest temperature measured as the detection result, missed detection can be avoided, so that the abnormal temperature of the static contact can be found in time.

Description of drawings

Fig. 1 is the front view of the present invention;

Fig. 2 is the left side view of the present invention;

Figure 3 is a cross-sectional view of the fastener;

Fig. 4 is the schematic diagram after the thermocouple is installed in the fixture;

Figure 5 is a left side view of the fixture;

Fig. 6 is A-A sectional view in Fig. 5;

FIG. 7 is a schematic diagram of the temperature of the static contact being conducted to the fixing member;

Fig. 8 is a partial enlarged view at B in Fig. 2;

In the picture: 1 static contact, 2 fixing piece, 21 isolation cavity, 22 heat conduction part, 23 probe hole, 24 inner hole, 25 wire groove, 3 side plate, 4 sealing plate, 5 elastic piece, 6 thermocouple, 61 Wire, 7-conductor.

Detailed ways

As shown in FIG. 1 to FIG. 8 , the present invention includes a fixing member 2 and a thermocouple 6 , and the present invention will be described in detail below with reference to the accompanying drawings.

As shown in Figure 1 and Figure 2, the GIS isolation switch contact temperature monitoring device includes a ring-shaped fixed part 2, the fixed part 2 is sleeved on the static contact 1 of the GIS isolation switch, the fixed part 2 is a thermally conductive insulating part, and the fixed part 2 side There are several heat conduction parts 22 evenly arranged in the circumferential direction in the wall, and several thermocouples 6 are arranged along the circumference of the fixing member 2. The probes of the thermocouples 6 extend into the heat conduction parts 22, and the wires of the thermocouples 6 pass through the fixed part. The side wall of the component 2 extends into the wire tube 7, one end of the wire tube 7 contacts the side wall of the fixing member 1, and the other end of the wire tube 7 extends to the side away from the GIS equipment.

In use, the fixing member 2 is sleeved and fixed on the static contact 1, the other end of the wire tube 7 is extended to the side away from the GIS equipment, and the wire 61 of the thermocouple 6 is connected to the power supply. At this point, the temperature value can be read through the meter. As shown in FIG. 7 , the temperature on the stationary contact 1 is conducted to the probe of the thermocouple 6 through the thermal conduction portion 22 . The arrangement of multiple thermocouples 6 realizes multi-point measurement on the static contact 1, avoids measurement errors caused by different temperatures at each point on the static contact, and takes the measured maximum value as the temperature of the static contact.

Specifically, the fixing member 2 is a heat-conducting, insulating and elastic rubber member, and a plurality of isolation cavities 21 are arranged in the side wall of the fixing member 2 .

Specifically, as shown in FIG. 3 , the isolation cavity 21 has an elastic member 5 in it. The arrangement of the elastic member 5 , when the fixing member is heated and expanded, squeezes the fixing member 2 to ensure good contact between the fixing member 2 and the static contact 1 , thereby ensuring heat conduction between the static contact 1 and the fixing member 2 .

Specifically, the outer side wall of the fixing member 2 has a wire groove 25 , and the wire 61 extends into the wire groove 25 . The arrangement of the wire slot 25 facilitates the wiring of the wires 61 on the thermocouple 6 . As shown in FIG. 8 , the wire 61 passes through the other end of the wire tube 7 and then extends into the wire tube 7 . The wire 61 is numbered, which is convenient for wiring on the one hand, and easy to distinguish on the other hand.

Specifically, the outer side of the fixing member 2 has an annular side plate 3 , and the side plate 3 seals the wire groove 25 to prevent the wires 61 in the wire groove 25 from running out.

Specifically, as shown in FIGS. 5 and 6 , both end surfaces of the fixing member 2 are provided with sealing plates 4 , and the sealing plates 4 are annular heat preservation members. The two sealing plates 4 surround the heat conduction part 22 , thereby avoiding measurement errors caused by heat dissipation of the heat conduction part 22 .

Specifically, as shown in FIG. 3 , the heat conduction part 22 has a probe hole 23 , and the bottom of the probe hole 23 is close to the inner side wall of the fixing member 2 . The probe hole 23 is used for the insertion of the probe of the thermocouple 6. The bottom of the probe hole 23 is close to the inner side wall of the fixing member 2, and the temperature value measured is more accurate.

The beneficial effects of the invention are as follows: the thermocouple is located on the static contact, and it is convenient to measure the temperature of the static contact; the outer side of the static contact is provided with an insulating and heat-conducting fixing piece, and by measuring the temperature of the fixing piece as the temperature of the static contact, the thermocouple and the The insulation between the static contacts protects the thermocouple; by measuring the temperature at multiple points on the static contacts, and using the highest temperature measured as the detection result, missed detection can be avoided, so as to detect static electricity in time. The contact temperature is abnormal.

Claims (7)

1. GIS isolator contact temperature monitoring device, its characterized in that, including annular mounting, the mounting cover is on GIS isolator static contact, the mounting is heat conduction insulating part, the heat conduction portion that has a plurality of along the even setting of circumference in the mounting lateral wall, follows mounting place circumference is provided with a plurality of thermocouple, the probe of thermocouple stretches into in the heat conduction portion, the wire of thermocouple stretches into in the spool after passing the mounting lateral wall, the one end and the mounting lateral wall contact of spool, the other end of spool extends to the one side of keeping away from GIS equipment.
2. 2. The GIS disconnector contact temperature monitoring device of claim 1, wherein the fixing member is a heat-conducting and insulating elastic rubber member, and a plurality of isolation cavities are formed in a side wall of the fixing member, and are arranged so that the side wall of the fixing member forms a plurality of heat-conducting portions.
3. 3. The GIS isolator contact temperature monitoring device of claim 2, wherein the isolation chamber has a spring.
4. 4. The GIS disconnecting switch contact temperature monitoring device according to claim 2, wherein the outer side wall of the fixing member has a wire slot into which the wire extends.
5. 5. The GIS disconnector contact temperature monitoring device of claim 4, wherein the fixture has an annular side plate on the outside, and the side plate seals the wire slot.
6. 6. The GIS disconnecting switch contact temperature monitoring device according to claim 5, wherein the fixing member has sealing plates at both end faces thereof, and the sealing plates are heat insulating members.
7. 7. The GIS disconnecting switch contact temperature monitoring device according to claim 1, wherein the heat conducting portion has a probe hole therein, and a bottom of the probe hole is close to an inner side wall of the fixing member.

Images