CN204330964U - Insulation cooling dielectric withstanding voltage test unit - Google Patents
Insulation cooling dielectric withstanding voltage test unit Download PDFInfo
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- CN204330964U CN204330964U CN201520029578.XU CN201520029578U CN204330964U CN 204330964 U CN204330964 U CN 204330964U CN 201520029578 U CN201520029578 U CN 201520029578U CN 204330964 U CN204330964 U CN 204330964U
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- withstanding voltage
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Abstract
The utility model relates to a kind of insulation cooling dielectric withstanding voltage test unit, comprise for housing insulation heat eliminating medium insulation tube, be separately positioned on the first end cap on insulation tube two ends and the second end cap, be arranged in insulation tube and be respectively used to ground connection and connect high-tension electricity the first electrode and the second electrode, be arranged on the heating unit in insulation tube and detect the tensimeter of insulation overpressure; One end of first electrode and the second electrode is connected on the first end cap and the second end cap, the other end of the first electrode and the separable docking of the other end of the second electrode.The utility model can carry out withstand voltage test under insulation heat eliminating medium liquid in a heated state, gas two-phase state, be convenient to the withstand voltage situation understanding insulation heat eliminating medium liquid phase and liquid, gas two-phase state, different spacing under various state of temperature, to analyze the voltage breakdown situation of insulation heat eliminating medium when various state of temperature, under different spacing, thus to improve safety in utilization.
Description
Technical field
The utility model relates to transformer technology field, particularly relates to a kind of insulation cooling dielectric withstanding voltage test unit.
Background technology
In oil-immersed power transformer, heat eliminating medium is adopted to be transformer oil or oil resistant.Traditional transformer oil dielectric(al) test is placed on by transformer oil in an insulation lubricating cup, applies high pressure, the voltage breakdown of test transformer oil, i.e. its dielectric strength in lubricating cup between two electrodes.But traditional oil-immersed power transformer oil mass is large, runs into naked light after exceeding burning-point once cause internal temperature because of fault, meeting initiation fire, forms serious threat to the life property safety of skyscraper and people.Therefore, occurred adopting fluorine carbonization to close the transformer of liquid as insulation heat eliminating medium.The insulation heat eliminating medium that liquid is closed in such fluorine carbonization can produce bubble in its inside about 40 DEG C time, along with temperature raises, the bubble produced is more, adopt traditional edge Strength Testing Methods accurately can not reflect the true resistance to pressure condition of this insulation heat eliminating medium, therefore, be necessary to design a kind of Withstand test device for such insulation heat eliminating medium.
Utility model content
The technical problems to be solved in the utility model is, provides a kind of insulation cooling dielectric withstanding voltage test unit being convenient to understand insulation cooling dielectric withstanding voltage situation.
The utility model solves the technical scheme that its technical matters adopts: provide a kind of iknsulating liquid dielectric withstanding voltage test unit, comprise for housing insulation heat eliminating medium insulation tube, be separately positioned on the first end cap on described insulation tube two ends and the second end cap, be arranged in described insulation tube and be respectively used to ground connection and connect high-tension electricity the first electrode and the second electrode, be arranged on the heating unit in described insulation tube and detect the tensimeter of described insulation overpressure; One end of described first electrode and the second electrode is connected on described first end cap and the second end cap, the other end of described first electrode and the separable docking of the other end of described second electrode.
Preferably, described heating unit comprises the first heating element be arranged in described first electrode and/or the second electrode.
Preferably, described heating unit also comprises and being arranged in described insulation tube to heat the second heating element of described insulation heat eliminating medium; One end of described second heating element is fixed and is stretched out described first end cap or the second end cap.
Preferably, this Withstand test device also comprises the first temp probe be arranged on described first electrode and/or the second electrode; Described first end cap or the second end cap are provided with the temp probe connection terminal for being electrically connected with external temperature display device, and described first temp probe is connected with described temp probe connection terminal by wire.
Preferably, this Withstand test device also comprises the second temp probe for detecting described insulation coolant temperature; Described second temp probe is arranged in described insulation tube, and its one end is fixed and stretched out described first end cap or the second end cap.
Preferably, described first electrode is fixedly connected on described first end and covers, and described second electrode can axially movably be connected on described second end cap.
Preferably, described second electrode is connected on the second end cap by T-shaped screw rod movably;
On the outer face of described second end cap, corresponding described T-shaped screw rod is provided with the 360 ° of index dials being used to refer to the described T-shaped screw rod anglec of rotation.
Preferably, described tensimeter is arranged on described first end cap or the second end cap; This tensimeter is the mechanical compression table of range 0-0.1MPa.
Preferably, described insulation tube is plexi-glass tubular.
Preferably, this Withstand test device also comprise several be distributed in described insulation tube periphery, be connected to insulating bar between described first end cap and the second end cap.
Implement the utility model and there is following beneficial effect: withstand voltage test can not only be carried out to insulation heat eliminating medium in normal temperature state, and withstand voltage test can be carried out under insulation heat eliminating medium liquid in a heated state, gas two-phase state, be convenient to the withstand voltage situation understanding insulation heat eliminating medium liquid phase and liquid, gas two-phase state, different spacing under various state of temperature, to analyze the voltage breakdown situation of insulation heat eliminating medium when various state of temperature, under different spacing, thus to improve safety in utilization.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail, in accompanying drawing:
Fig. 1 is the sectional structure schematic diagram of the iknsulating liquid dielectric withstanding voltage test unit of the utility model one embodiment.
Embodiment
In order to there be understanding clearly to technical characteristic of the present utility model, object and effect, now contrast accompanying drawing and describe embodiment of the present utility model in detail.
As shown in Figure 1, the iknsulating liquid dielectric withstanding voltage test unit of the utility model one embodiment, comprise insulation tube 10, be separately positioned on the first end cap 11 and the second end cap 12, the first electrode 21 and the second electrode 22 be arranged in insulation tube 1 on insulation tube 10 two ends, be arranged on the heating unit in insulation tube 10 and detect the tensimeter 20 of pressure in insulation tube 10.Insulation tube 10 is for housing insulation heat eliminating medium, and insulation heat eliminating medium is used for vapour-cooled transformer, comprises fluorine carbonization and closes liquid; The closed at both ends of insulation tube 10 is got up by the first end cap 11 and the second end cap 12; First electrode 21 is for ground connection, and the second electrode 22 is for connecing high-tension electricity, and heating unit heating power can heat insulation heat eliminating medium, and make it change from liquid phase to gas-liquid two-phase, 20, tensimeter can detect the pressure in insulation tube 10 at any time.
Insulation tube 10 is preferably plexi-glass tubular.First end cap 11 and the second end cap 12, at the two ends of insulation tube 10, are integrally formed the container of sealing with housing insulation heat eliminating medium with insulation tube 10.One end of first electrode 21 and the second electrode 22 is connected on the first end cap 11 and the second end cap 12, the separable docking of the other end of the first electrode 21 and the second electrode 22.First end cap 11 and the second end cap 12 can be conduction end cap, thus the first end cap 1 forms earth terminal, and the second end cap 12 is formed and connects high-pressure side.
In the present embodiment, the first electrode 21 is fixedly connected on the first end cap 11, and the first electrode 21 stretches out the first end cap 11 with ground connection away from one end of the second electrode 22; Second electrode 22 can axially movably be connected on the second end cap 12, and the second electrode 22 stretches out the second end cap 12 to connect high-tension electricity away from one end of the first electrode 21.The moved axially setting of the second electrode 22, makes the spacing between the first electrode 21 and the second electrode 22 adjustable, the withstand voltage situation of insulation heat eliminating medium during convenient detection different spacing.Second electrode 22 is connected on the second end cap 12 by T-shaped screw rod (not shown) movably, moves the second electrode 22 by rotating T-shaped screw rod.Preferably, the pitch of T-shaped screw rod is the standard pitch of 2mm.In addition, on the outer face of the second end cap 12, corresponding T-shaped screw rod is provided with 360 ° of index dials (not shown), is used to refer to the anglec of rotation of T-shaped screw rod, can extrapolate according to the anglec of rotation distance that the second electrode 22 moves axially.
Understandably, when the first end cap 11 and the second end cap 12 are for conduction end cap, the second end cap 12 can not be stretched out in one end that the first end cap 11, the second electrode 22 can not be stretched out in one end of the first electrode 21, and directly by the first end cap 11 ground connection, the second end cap 12 connects high-tension electricity.First electrode 21 and the second electrode 22 adopt brass to make.
Tensimeter 20 is arranged on the first end cap 11 or the second end cap 12, can reflect pressure in insulation tube 10 in real time, safety during warranty test.In the present embodiment, this tensimeter 20 is the mechanical compression table of range 0-0.1MPa.Tensimeter 20 is detachably arranged on the first end cap 11 or the second end cap 12 by flange, and accordingly, the first end cap 11 or the second end cap 12 are provided with connecting hole (not shown) and install for flange.This connecting hole also can be used as filling orifice, and insulation heat eliminating medium is injected in insulation tube 10 by this connecting hole and carries out withstand voltage test.After withstand voltage test completes, insulation heat eliminating medium is poured out in insulation tube 10 by this connecting hole equally.
Heating unit can to insulation cooling dielectric heating in insulation tube 10, the withstand voltage situation of the heat eliminating medium that insulate under detecting different temperatures by its different heating degree is convenient.Heating unit comprises the first heating element 31 be arranged in the first electrode 21 and/or the second electrode 22.First heating element 31 adstante febre, heat transmits this first electrode 21 and/or the second electrode 22, thus can pass to insulation heat eliminating medium.This first heating element 31 can adopt electrothermal tube.
Cool homogeneous media to make insulation to be heated, heating unit also comprises the second heating element 32 be arranged in insulation tube 10, and this second heating element 32 directly cools medium contact to heat the heat eliminating medium that insulate with insulation.One end of second heating element 32 is fixed and is stretched out the first end cap 11 or the second end cap 12.This second heating element 32 can adopt electrothermal tube.
Further, this Withstand test device also comprises the first temp probe 41, and it is arranged on the first electrode 21 and/or the second electrode 22, for detecting the temperature conditions of the first electrode 21 and/or the second electrode 22.Preferably, when the first heating element 31 is arranged in the first electrode 21, the first temp probe 41 correspondence is arranged on the first electrode 21.In addition, the first end cap 11 or the second end cap 12 are provided with temp probe connection terminal 40, first temp probe 41 to be connected with temp probe connection terminal 40 by wire 411.Temp probe connection terminal 40, for being connected with external temperature display device, is shown by external temperature display device with the temperature detected by the first temp probe 41.
This Withstand test device also comprises the second temp probe 42 for detecting insulation coolant temperature.This second temp probe 42 is arranged in insulation tube 10, and its one end is fixed and stretched out the first end cap 11 or the second end cap 12, and the other end directly can cool medium contact with insulation in insulation tube 10, the temperature of detection insulation heat eliminating medium.Second temp probe 42 stretches out one end of the first end cap 11 or the second end cap 12 for being connected with external temperature display device, is shown by external temperature display device with the temperature detected by this second temp probe 42.
Further, this Withstand test device also comprises several insulating bar 50 being distributed in the periphery of insulation tube 10, several insulating bar 50 is connected between the first end cap 11 and the second end cap 12, strengthens the first end cap 11 and the strength of joint between the second end cap 12 and insulation tube 10.Preferably, insulating bar 50 is teflon insulation bar.
During test, be injected in insulation tube 10 by insulation heat eliminating medium to be tested, the first electrode 21 and the second electrode 22 are connected respectively, the voltage breakdown of test insulation heat eliminating medium.When needing to test the voltage breakdown of heat eliminating medium of insulating under normal temperature, heating unit no power; Under needing to test gas-liquid two-phase state or the voltage breakdown of the heat eliminating medium that insulate at other temperature, then by heating unit heating power, insulation heat eliminating medium heating temperature raises, and along with the temperature of insulation heat eliminating medium raises, the pressure in insulation tube 10 also increases.Pressure size embodies by tensimeter 20, and in insulation tube 10, temperature variation obtains by the first temp probe 41 and the detection of the second temp probe 42.
The foregoing is only embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every utilize the utility model instructions and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.
Claims (10)
1. an insulation cooling dielectric withstanding voltage test unit, it is characterized in that, comprise for housing insulation heat eliminating medium insulation tube (10), be separately positioned on the first end cap (11) on described insulation tube (10) two ends and the second end cap (12), be arranged in described insulation tube (10) and be respectively used to ground connection and connect high-tension electricity the first electrode (21) and the second electrode (22), be arranged on the heating unit in described insulation tube (10) and detect the tensimeter (20) of pressure in described insulation tube (10); One end of described first electrode (21) and the second electrode (22) is connected on described first end cap (11) and the second end cap (12), the other end of described first electrode (21) and the separable docking of the other end of described second electrode (22).
2. insulation cooling dielectric withstanding voltage test unit according to claim 1, it is characterized in that, described heating unit comprises the first heating element (31) be arranged in described first electrode (21) and/or the second electrode (22).
3. insulation according to claim 2 cooling dielectric withstanding voltage test unit, is characterized in that, described heating unit also comprises and being arranged in described insulation tube (10) to heat second heating element (32) of described insulation heat eliminating medium; One end of described second heating element (32) is fixed and is stretched out described first end cap (11) or the second end cap (12).
4. insulation cooling dielectric withstanding voltage test unit according to claim 2, it is characterized in that, this Withstand test device also comprises the first temp probe (41) be arranged on described first electrode (21) and/or the second electrode (22); Described first end cap (11) or the second end cap (12) are provided with the temp probe connection terminal (40) for being electrically connected with external temperature display device, and described first temp probe (41) is connected with described temp probe connection terminal (40) by wire (411).
5. insulation cooling dielectric withstanding voltage test unit according to claim 2, it is characterized in that, this Withstand test device also comprises the second temp probe (42) for detecting described insulation coolant temperature; Described second temp probe (42) is arranged in described insulation tube (10), and its one end is fixed and stretched out described first end cap (11) or the second end cap (12).
6. insulation cooling dielectric withstanding voltage test unit according to claim 1, it is characterized in that, described first electrode (21) is fixedly connected on described first end cap (11), described second electrode (22) can axially movably be connected on described second end cap (12), makes the spacing between described first electrode (21) and the second electrode (22) adjustable.
7. insulation cooling dielectric withstanding voltage test unit according to claim 6, it is characterized in that, described second electrode (22) is connected on the second end cap (12) by T-shaped screw rod movably;
On the outer face of described second end cap (12), corresponding described T-shaped screw rod is provided with the 360 ° of index dials being used to refer to the described T-shaped screw rod anglec of rotation.
8. insulation cooling dielectric withstanding voltage test unit according to claim 1, it is characterized in that, described tensimeter (20) is arranged on described first end cap (11) or the second end cap (12); The mechanical compression table that this tensimeter (20) is range 0-0.1MPa.
9. the insulation cooling dielectric withstanding voltage test unit according to any one of claim 1-8, it is characterized in that, described insulation tube (10) is plexi-glass tubular.
10. the insulation cooling dielectric withstanding voltage test unit according to any one of claim 1-8, it is characterized in that, this Withstand test device also comprise several be distributed in described insulation tube (10) periphery, be connected to insulating bar (50) between described first end cap (11) and the second end cap (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520029578.XU CN204330964U (en) | 2015-01-15 | 2015-01-15 | Insulation cooling dielectric withstanding voltage test unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520029578.XU CN204330964U (en) | 2015-01-15 | 2015-01-15 | Insulation cooling dielectric withstanding voltage test unit |
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| CN204330964U true CN204330964U (en) | 2015-05-13 |
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| CN201520029578.XU Active CN204330964U (en) | 2015-01-15 | 2015-01-15 | Insulation cooling dielectric withstanding voltage test unit |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106707069A (en) * | 2017-02-15 | 2017-05-24 | 国网湖北省电力公司电力科学研究院 | Insulation tube bus electro-thermal accelerated ageing test device and method |
| CN112748316A (en) * | 2020-12-31 | 2021-05-04 | 安徽新皖能检测有限公司 | Withstand voltage detection device for insulating oil and withstand voltage detection method thereof |
| CN114126179A (en) * | 2021-11-09 | 2022-03-01 | 中国人民解放军军事科学院国防工程研究院工程防护研究所 | Device and method for generating large-area uniform glow discharge plasma |
-
2015
- 2015-01-15 CN CN201520029578.XU patent/CN204330964U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106707069A (en) * | 2017-02-15 | 2017-05-24 | 国网湖北省电力公司电力科学研究院 | Insulation tube bus electro-thermal accelerated ageing test device and method |
| CN106707069B (en) * | 2017-02-15 | 2018-03-30 | 国网湖北省电力公司电力科学研究院 | Insulating tube type busbar electric heating accelerated aging tester and method |
| CN112748316A (en) * | 2020-12-31 | 2021-05-04 | 安徽新皖能检测有限公司 | Withstand voltage detection device for insulating oil and withstand voltage detection method thereof |
| CN114126179A (en) * | 2021-11-09 | 2022-03-01 | 中国人民解放军军事科学院国防工程研究院工程防护研究所 | Device and method for generating large-area uniform glow discharge plasma |
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