CN202083480U

CN202083480U - Capacitor temperature detecting apparatus

Info

Publication number: CN202083480U
Application number: CN201120130435XU
Authority: CN
Inventors: 陆旭峰
Original assignee: Shanghai Municipal Electric Power Co
Current assignee: Shanghai Municipal Electric Power Co
Priority date: 2011-04-28
Filing date: 2011-04-28
Publication date: 2011-12-21
Anticipated expiration: 2021-04-28

Abstract

Disclosed is a capacitor temperature detecting apparatus, comprising a casing of an oblate disc shape with the diameter thereof ranging from 25 to 30 mm, wherein the surface of one end of the casing adopts transparent design while the surface of the other end of the casing is connectively provided with a contact pedestal; the interior of the casing adopts a sealed structure and is provided with a detecting assembly; a laminate layer metal sheet of the detecting assembly shapes like a spiral roll; one end of the spiral roll is fixed to the interior of one part of the casing where the surface of the casing is connected with the contact pedestal while the other end is connected with a pointer via a metal sheet connection shaft; and the pointer cooperates with a temperature dial which is arranged at the transparent surface section but inside the casing surface. The capacitor temperature detecting apparatus allows convenient measuring and tracking the temperature of each capacitor of the capacitor set, thereby preventing the damage of one single capacitor from leading to the damage of the whole capacitor set, avoiding safety accident resulting from temperature rise, and being suitable for the detection of the capacitor temperature inside the transformer station.

Description

A kind of capacitor temperature detection device

Technical field

The utility model relates to a kind of temperature detection instrument, relates in particular to a kind of sniffer that is used for transformer station's inner capacitor temperature.

Background technology

At present, in each tame transformer station, all adopted high-voltage parallel dipping capacitor one time, and the paper insulation that this kind dipping capacitor is flooded, maximum allowable temperature is 90～95 ℃.But capacitor interior media hottest spot temperature in servicely but can't be monitored, and therefore can only come the temperature rise of indirect monitors internal hottest point from the temperature of shell.General capacitor allows the shell maximum temperature, oil impregnatedly is defined as 60 ℃, the chlorinated biphenyl dipping be defined as 80 ℃.

Yet in actual use work, if behind the capacitor seepage oil, pasta descends, and oil mass reduces; Moisture and moisture enter, and dielectric strength descends.When pasta downtakes to a certain degree the time, pasta is exposed in inner lead and element upper end, and causes extremely to discharge of case shell or component breakdown.Also have that operating ambient temperature is too high, superpotential etc. all might be caused capacitor explosion fault.The capacitor explosion often causes many, whole group capacitor damage simultaneously, even causes fire, and whole capacitor device chamber is burnt.Influence the operation of electricity net safety stable.

And the measure that prevents the capacitor explosion under the prior art has:

1. reinforcement equipment is maked an inspection tour, and manual observation capacitor appearance is seen to have or not and expanded and oil seepage phenomena.

But depend patrolman's visual detection alone, also can only only judge, can't learn inner case, so this kind detection mode is very inaccurate from the capacitor appearance.

2. with apparatus measures capacitor temperature, prevent that temperature from raising.

But all in capacitor panel, view window reflective infrared is again measured ripple for the cabinet type capacitor group of existing type, each capacitor, so can not arrive the temperature of each capacitor with apparatus measures.

To sum up, the various detection meanss under the prior art all can't detect the temperature of capacitor timely and effectively, bring hidden danger to equipment safety operation.

So press for a kind of novel capacitor temperature measuring equipment at present, need meet the following conditions:

1, this apparatus cost is not high, and cost of manufacture can descend in a large number.

2, this device need satisfy the explosion-proof needs of substation safety, and is nonflammable.

3, this device does not need external power source, present situation that can the practical work displays temperature.

4, this device needs installation, convenient fixing.

The utility model content

In order to solve the variety of problems that detects the problem of capacitor under the prior art, in conjunction with above-mentioned actual user demand, the utility model provides a kind of capacitor temperature detection device, when satisfying above-mentioned condition, can measure the temperature of capacitor effectively, concrete structure of the present utility model is as described below:

A kind of capacitor temperature detection device comprises a shell, it is characterized in that:

Described shell is the oblate disc-shaped housings of radius 25～30MM, and the shell face of one end designs for transparent mode, and the shell face of the other end is connected with a contact base, and enclosure is a sealed construction;

Be provided with a probe assembly in the described shell.

She Ji purpose is herein, shell is the oblate disc-shaped housings of 25～30MM, this becomes housing as the transcalent copper of employing, the shell face of one end is that transparent organic glass is made, be used for observed reading, this transparent shell face is oriented the direction of observing near easily, and the shell face of the other end is connected with the contact base, this contact base is bonded at the top of single capacitor by the stickup heat conductive silica gel, promptly equal whole capacitor actuator temperature sniffer is adhered on the single capacitor, and the degree of accuracy in order to measure prevents that humidity from causing that measurement is inaccurate, so whole casing inside is sealed construction.

According to a kind of capacitor temperature detection device of the present utility model, it is characterized in that, described probe assembly comprises spiral web-like composite bed sheet metal, sheet metal coupling shaft, pointer and temperature scale dish, it is specially spiral web-like composite bed sheet metal, one end of its helical coil is fixed on the inside that shell shell face connects the housing parts of contact base position, the other end is connected with pointer by the sheet metal coupling shaft, pointer cooperates with the temperature scale dish, and the temperature scale dish then is arranged at the inside of housing parts at the transparent area place of shell shell face.

She Ji purpose is herein, spiral web-like composite bed sheet metal is with golden, multiple metal film stack such as the platinum composition that forces together, measure sensitivity for improving, so sheet metal is manufactured the helical coil shape, and improved by the capacitor temperature and when changing shape when spiral web-like composite bed sheet metal, each layer expansion of metal or amount of contraction do not wait, make the spiral web-like composite bed sheet metal of helical coil shape roll or unclamp, because an end of the spiral web-like composite bed sheet metal of helical coil shape is fixed on the inside that shell shell face connects the housing parts of contact base position, and the other end links to each other with a pointer that can freely rotate by the sheet metal coupling shaft, therefore, experience temperature variation when sheet metal and roll or when unclamping, pointer can rotate on the scale of the temperature inside index dial of the housing parts at the transparent area place that is arranged at shell shell face, and this moment, the testing staff can observe the temperature data of capacitor intuitively.

Use capacitor temperature detection device of the present utility model to obtain following beneficial effect:

1. capacitor temperature detection device of the present utility model uses metal construction, and product are simple in structure, and after a large amount of the manufacturing, cost of products easily descends.

2. this becomes the housing of capacitor temperature detection device of the present utility model as the transcalent copper of employing, and inner sealing, is not subject to external environmental interference so measure temperature, and has saved the work of operation maintenance at ordinary times without external power source.

3. capacitor temperature detection device of the present utility model only needs the contact base is bonded at the top of single capacitor by pasting heat conductive silica gel, promptly equals whole capacitor actuator temperature sniffer is adhered on the single capacitor, install simple, convenient.

Description of drawings

Fig. 1 is the concrete structure synoptic diagram of a kind of capacitor temperature detection device of the present utility model;

Fig. 2 is the concrete structure vertical view of a kind of capacitor temperature detection device of the present utility model.

Among the figure: the 1-shell, 2-contacts base, A-probe assembly, A1-spiral web-like composite bed sheet metal, A2-sheet metal coupling shaft, A3-pointer, A4-temperature scale dish.

Embodiment

Below in conjunction with drawings and Examples capacitor temperature detection device of the present utility model is further described.

Embodiment

Choose certain substation capacitors group, environment temperature is 20 ℃, as depicted in figs. 1 and 2, on the plane of the contact base 2 of capacitor temperature detection device of the present utility model, be coated with heat conductive silica gel, be attached on each capacitor to be measured, every each the capacitor same position height of every group capacitor group all sticks capacitor temperature detection device of the present utility model, notes temperature scale dish A4 is observed with convenient towards capacitor panel door direction.The capacitor group is actual to be sent to measure behind the electricity and observes each capacitor of every group capacitor and have or not temperature deviation, when producing temperature variation, the spiral web-like composite bed sheet metal A1 of probe assembly A rolls or unclamps, because an end of the spiral web-like composite bed sheet metal of helical coil shape is fixed on the inside that shell 1 shell face connects the housing parts of contact base position, and that the other end links to each other by the pointer A3 that sheet metal coupling shaft A2 and can freely rotate is (not shown because of plane projection relation among Fig. 1, particular location can be referring to Fig. 2), therefore, experience temperature variation when sheet metal and roll or when unclamping, pointer can rotate on the scale of the temperature inside index dial of the housing parts at the transparent area place that is arranged at shell shell face, at this moment, the temperature scale dish under the shell face that can make by transparent organic glass of testing staff is read actual temperature.

Capacitor temperature detection device of the present utility model can be measured the temperature of following the tracks of this each capacitor of group capacitor group easily, the damage that prevents single capacitor causes the damage of related whole group capacitor group, the security incident of having avoided temperature to raise and may having caused is applicable to the field of detecting of transformer station inner capacitor temperature.

Claims

1. a capacitor temperature detection device comprises a shell (1), it is characterized in that:

Described shell (1) is the oblate disc-shaped housings of radius 25～30MM, and the shell face of one end designs for transparent mode, and the shell face of the other end is connected with a contact base (2), and enclosure is a sealed construction;

Be provided with a probe assembly (A) in the described shell (1).

2. capacitor temperature detection device as claimed in claim 1, it is characterized in that, described probe assembly (A) comprises spiral web-like composite bed sheet metal (A1), sheet metal coupling shaft (A2), pointer (A3) and temperature scale dish (A4), it is specially spiral web-like composite bed sheet metal, one end of its helical coil is fixed on the inside that shell shell face connects the housing parts that contact base (2) locates, the other end is connected with pointer by the sheet metal coupling shaft, pointer cooperates with the temperature scale dish, and the temperature scale dish then is arranged at the inside of housing parts at the transparent area place of shell shell face.