CN204479704U - A kind of test casing of GIS terminal test unit - Google Patents
A kind of test casing of GIS terminal test unit Download PDFInfo
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- CN204479704U CN204479704U CN201520189574.8U CN201520189574U CN204479704U CN 204479704 U CN204479704 U CN 204479704U CN 201520189574 U CN201520189574 U CN 201520189574U CN 204479704 U CN204479704 U CN 204479704U
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Abstract
The utility model provides a kind of test casing of GIS terminal test unit, for testing GIS terminal; This sleeve pipe comprises insulating cylinder body, high pressure retraction mechanism, grounded shield electrode and ground connection flange; Described ground connection flange is connected with one end of insulating cylinder body, and high pressure retraction mechanism is connected with the other end of insulating cylinder body; Described grounded shield electrode is arranged on the inwall of insulating cylinder body, and with ground connection Flange joint; One end of described insulating cylinder body and ground connection Flange joint is provided with towards the other end of insulating cylinder body the test cavity stretched into for GIS terminal, and during work, described test chamber body forms the test cavity of sealing.This casing safety is reliable, low-profile, structure are simple, it is convenient to install and use, and can carry out completion withstand voltage test, effectively can improve accuracy, the validity and reliability of test, be conducive to extensive penetration and promotion GIS terminal and cable line.
Description
Technical field
The utility model relates to the technical field of power equipment, more particularly, relates to a kind of test casing for high-voltage cable GIS terminal test unit.
Background technology
Along with the development of power industry and the application of new and high technology, the level that designs and produces of gas-insulated switch improves constantly, and the switchyard in modern city area develops into miniaturization and intellectuality all gradually.According to the requirement in GB and IEC60840, cable system needs after installing to do final acceptance of construction test, effectively to ensure the safe and stable operation of electric system.
Two ends are to the cable line of GIS terminal, although developed the test unit separately cable loop being carried out to electrical test at present both at home and abroad, and form commodity, but the safe distance of GIS terminal surrounding space is very little in current domestic a lot of switchyard, and existing GIS terminal test unit due to complex structure, the shortcoming such as build is large, assembling is complicated, the use of rigging position also underaction and a lot of occasion can be restricted, cause the object that cannot realize test fast, thus improve the difficulty of cable construction.As can be seen here, existing test unit cannot meet the demand of site test.
Therefore, when needs carry out completion withstand voltage test to GIS terminal and cable line, now need to provide that a kind of structure is simple, easy to use and flexible and low-profile can meet small space and operate and be applicable to the test casing that GIS terminal and cable line carry out withstand voltage test, with the testing requirements at satisfied scene.
Utility model content
The purpose of this utility model is to overcome shortcoming of the prior art with not enough, provides the test casing that a kind of low-profile, structure are simple, install and use convenient and safe and reliable GIS terminal test unit; This test casing good seal performance, can carry out completion withstand voltage test to GIS terminal and cable line, effectively can improve accuracy, the validity and reliability of test, is conducive to extensively universal and popularization.
In order to achieve the above object, the utility model is achieved by following technical proposals: a kind of test casing of GIS terminal test unit, for testing GIS terminal; It is characterized in that: comprise insulating cylinder body, high pressure retraction mechanism, grounded shield electrode and ground connection flange; Described ground connection flange is connected with one end of insulating cylinder body, and high pressure retraction mechanism is connected with the other end of insulating cylinder body; Described grounded shield electrode is arranged on the inwall of insulating cylinder body, and with ground connection Flange joint; One end of described insulating cylinder body and ground connection Flange joint is provided with towards the other end of insulating cylinder body the test cavity stretched into for GIS terminal, and during work, described test chamber body forms the test cavity of sealing.
In such scheme, test casing of the present utility model directly and after GIS terminal plug-in mounting, then from high pressure retraction mechanism top-loaded test voltage, then can realize carrying out effective corresponding test to GIS terminal.This test casing is connected to form by insulating cylinder body, high pressure retraction mechanism, grounded shield electrode and ground connection flange, simple, easy to install, the safe and reliable and low-profile of its structure, thus increases work efficiency and reduce experimentation cost.Simultaneously, grounded shield electrode of the present utility model is made up of conductive material, it is wound around the inwall being arranged on insulating cylinder body, and be reliably connected with ground connection flange, can realize GIS terminal be inserted into insulating cylinder body inner time, ensure that the Electric Field Distribution of GIS terminal is identical with the Electric Field Distribution in actual track, thus improve accuracy, the validity and reliability to GIS terminal test.In order to improve the quality of test, grounded shield electrode and insulating cylinder body can be integrally formed.
In existing technical scheme, guarded electrode is all the inside being arranged on insulating cylinder body, this set-up mode utilizes the inner space of insulating cylinder body to arrange, so not only occupy the inner space of insulating cylinder body, and need to adopt other spare and accessory parts to carry out guarded electrode and be fixed on insulating cylinder body inside, cause GIS terminal test unit complex structure and volume to increase.Because in current domestic a lot of switchyard, the safe distance of GIS terminal surrounding space is very little, therefore, said structure complexity and bulky GIS terminal test unit cannot be applicable to carry out completion withstand voltage test at limited safe distance.Be compared with the prior art, grounded shield electrode of the present utility model is wound around the structural design being arranged on insulating cylinder body inwall, or grounded shield electrode and the integrally formed structural design of insulating cylinder body, not only do not take the inner space of insulating cylinder body thus effectively can reduce the internal diameter of insulating cylinder body, make that test casing structure is simple, low-profile, volume-diminished and weight reduce, and without the need to assembling grounded shield electrode in addition, thus simplify production technology.As can be seen here, test casing of the present utility model effectively can solve the problem causing existing structure complexity and bulky GIS terminal test unit to be suitable for because the safe distance of GIS terminal surrounding space in current domestic a lot of switchyard is very little.
More particularly, described high pressure retraction mechanism comprises main body and is arranged on the outlet rod in the middle part of main body, and outlet rod one end is interted for being connected with GIS terminal in insulating cylinder body, and it is outer for introducing high pressure that the other end stretches out insulating cylinder body.The structure that outlet rod of the present utility model and main body can be formed in one, this structure can improve sealing reliability when high pressure retraction mechanism is connected with insulating cylinder body, thus the accuracy improved GIS terminal test and validity, also simplify its production operation flow process simultaneously.
One end that described outlet rod interts in insulating cylinder body is provided with groove.The design of the utility model groove can facilitate high pressure retraction mechanism to be connected with tested GIS terminal high-tension electricity, thus makes between this test casing and GIS terminal easy to install.
The described outlet rod other end stretched out outside insulating cylinder body is provided with the through hole for accessing high-voltage connection.Through hole of the present utility model can further improve the convenience of use.
Described high pressure retraction mechanism is made up of conductive metal material, and high pressure retraction mechanism is coated on the other end of insulating cylinder body, and one-body molded with insulating cylinder body mucilage binding.This design can improve structural strength and the sealing property of test casing.
Described ground connection flange is poured into a mould with the end, one end of insulating cylinder body and is connected.The utility model is provided with the connection that ground connection flange is convenient between test casing and GIS terminal, the steadiness connected both also improving and reliability.
Described ground connection flange is provided with some equally distributed installation through holes, is convenient to the connection between test casing and GIS terminal.
Described insulating cylinder body is the insulating cylinder body be made up of epoxy glass fiber.Insulating cylinder body adopts epoxy glass fiber reinforcing material to make, and has good mechanical property, can bear the working pressure of regulation.
Described insulating cylinder body outside surface is coated with the overcoat for increasing insulation creep distance; The insulating cylinder body xsect being coated with overcoat is turriform.The utility model is coated with overcoat at insulating cylinder body outside surface, insulation creep distance can be increased, thus effectively can reduce the length of insulating cylinder body, thus further reduced volume and reduction weight, make this test casing be applicable to carry out completion withstand voltage test at limited safe distance.
Described overcoat is silastic material.Overcoat coated outside the utility model insulating cylinder body is silastic material, specifically has good electric property.
The test casing structure of GIS terminal test unit of the present utility model is simple, easy to use, this test casing uses like this: during use, tested GIS terminal stretches into insulating cylinder body and is connected with high pressure retraction mechanism, by base plate and ground connection Flange joint, insulating cylinder body inside is made to form sealing test cavity.Now, the inner grounded shield electrode suitably highly arranging of insulating cylinder body, ensure that the Electric Field Distribution of GIS terminal is identical with the Electric Field Distribution in actual track, reaches the accuracy to GIS terminal testing experiment, validity and reliability.
Load test voltage from the outlet rod at high pressure retraction mechanism top again, fill the SF6 gas of 0.1 ~ 0.3MPa in test cavity after, then can realize carrying out effective corresponding test to GIS terminal, reach the object to GIS terminal quick test.GIS terminal is installed in insulating cylinder body, and whole process of the test is easy to install, reduces the weight of GIS terminal test unit simultaneously, reduces the volume of test unit, and safe and reliable, meets the demand of site test.Wherein, existing conductive connecting device can be adopted between GIS terminal with high pressure retraction mechanism to be connected.
The structure that high pressure retraction mechanism of the present utility model is combined by main body and outlet rod and high pressure retraction mechanism and the integrated structure of insulating cylinder body mucilage binding, not only can improve the structural strength of test casing, and can improve the sealing of test casing.And, grounded shield electrode of the present utility model is wound around the structure (or grounded shield electrode and the integrally formed structure of insulating cylinder body) being arranged on insulating cylinder body inwall, and insulating cylinder body outside surface is coated with the structure of overcoat, can effectively reduce the internal diameter of insulating cylinder body and length, thus reduce the volume of test casing and reduce its weight, simple and the low-profile of test casing structure can be made, thus effectively solve because the safe distance of GIS terminal surrounding space in current domestic a lot of switchyard is very little, cause the problem that existing structure complexity and bulky GIS terminal test unit cannot be suitable for, and its production operation flow process can be simplified.Because the utility model adopts SF6 gas to replace nitrogen to be used as testing the insulating gas of filling in cavity, the effect reducing test casing volume can be reached further.
Compared with prior art, the utility model tool has the following advantages and beneficial effect:
1, simple, the low-profile of the test casing structure of GIS terminal test unit of the present utility model, install and use convenient and safe and reliable.
2, the test casing good seal performance of GIS terminal test unit of the present utility model, can carry out completion withstand voltage test to GIS terminal and cable line, effectively can improve accuracy, the validity and reliability of test, is conducive to extensively universal and popularization.
Accompanying drawing explanation
Fig. 1 is the structural representation of the test casing of the utility model GIS terminal test unit;
Wherein, 1 be high pressure retraction mechanism, 1.1 for main body, 1.2 for outlet rod, 1.3 for groove, 1.4 for through hole, 2 for insulating cylinder body, 3 for overcoat, 4 for grounded shield electrode, 5 for ground connection flange, 6 for install through hole.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model is described in further detail.
Embodiment
As shown in Figure 1, the test casing of GIS terminal test unit of the present utility model is for testing GIS terminal; It comprises insulating cylinder body 2, high pressure retraction mechanism 1, grounded shield electrode 4 and ground connection flange 5; Wherein, ground connection flange 5 is connected with one end of insulating cylinder body 2, and high pressure retraction mechanism 1 is connected with the other end of insulating cylinder body 2; Grounded shield electrode 4 is arranged on the inwall of insulating cylinder body 2, and is connected with ground connection flange 5.One end that insulating cylinder body 2 is connected with ground connection flange 5 is provided with towards the other end of insulating cylinder body 2 the test cavity stretched into for GIS terminal, and during work, test chamber body forms the test cavity of sealing, realizes testing GIS terminal.
The outlet rod 1.2 that high pressure retraction mechanism 1 of the present utility model comprises main body 1.1 and is arranged in the middle part of main body 1.1, outlet rod 1.2 one end is interted for being connected with GIS terminal in insulating cylinder body 2, and it is outer for introducing high pressure that the other end stretches out insulating cylinder body 2.In order to improve sealing reliability when high pressure retraction mechanism 1 is connected with insulating cylinder body 2, the structure that outlet rod 1.2 and main body 1.1 are formed in one, thus the accuracy improved GIS terminal test and validity, also simplify its production operation flow process simultaneously.Wherein, outlet rod 1.2 one end of interting in insulating cylinder body 2 is provided with groove 1.3, is convenient to high pressure retraction mechanism 1 and is connected with tested GIS terminal high-tension electricity, thus make between this test casing and GIS terminal easy to install.Outlet rod 1.2 other end stretched out outside insulating cylinder body 2 is provided with the through hole 1.4 for accessing high-voltage connection, can further improve the convenience of use.The outlet rod 1.2 of high pressure retraction mechanism 1 of the present utility model and main body 1.1 also can assembly and connections, and outlet rod 1.2 is fixedly mounted in main body 1.1 by web members such as bolts, forms high pressure retraction mechanism 1.
In order to improve the structural strength of test casing, high pressure retraction mechanism 1 is made up of conductive metal material, and high pressure retraction mechanism 1 is coated on the other end of insulating cylinder body 2, and one-body molded with insulating cylinder body 2 mucilage binding.High pressure retraction mechanism of the present utility model 1 and insulating cylinder body 2 also can assembly and connections, specifically such: the one end be connected with high pressure retraction mechanism 1 in insulating cylinder body 2 is provided with flange, wherein, flange is poured into a mould with insulating cylinder body 2 end and is connected, and high pressure retraction mechanism 1 realizes it by web members such as bolts be connected with the end of insulating cylinder body 2 with Flange joint.Once, follow-up test can not be removed for the high pressure retraction mechanism 1 of this connected mode and the connection of insulating cylinder body 2.
Ground connection flange 5 of the present utility model is poured into a mould with the end, one end of insulating cylinder body 2 and is connected, and ground connection flange 5 is provided with some equally distributed installation through holes 6, is convenient to the connection between test casing and GIS terminal.
Insulating cylinder body 2 of the present utility model is the insulating cylinder body be made up of epoxy glass fiber.Insulating cylinder body 2 adopts epoxy glass fiber reinforcing material to make, and has good mechanical property, can bear the working pressure of regulation.
In order to increase insulation creep distance, insulating cylinder body 2 outside surface is coated with the overcoat 3 for increasing insulation creep distance; Insulating cylinder body 2 xsect being coated with overcoat 3 is turriform.Overcoat 3 coated outside the utility model insulating cylinder body 2 is silastic material, specifically has good electric property.
The test casing structure of GIS terminal test unit of the present utility model is simple, easy to use, this test casing uses like this: during use, tested GIS terminal stretches into insulating cylinder body 2 and is connected with high pressure retraction mechanism 1, be connected with ground connection flange 5 by base plate, make insulating cylinder body 2 inside form sealing test cavity.Now, insulating cylinder body 2 inside, at the grounded shield electrode 4 suitably highly arranged, ensure that the Electric Field Distribution of GIS terminal is identical with the Electric Field Distribution in actual track, reaches the accuracy to GIS terminal testing experiment, validity and reliability.
Load test voltage from the outlet rod at high pressure retraction mechanism 1 top again, fill the SF6 gas of 0.1 ~ 0.3MPa in test cavity after, then can realize carrying out effective corresponding test to GIS terminal, reach the object to GIS terminal quick test.GIS terminal is installed in insulating cylinder body 2, and whole process of the test is easy to install, reduces the weight of GIS terminal test unit simultaneously, reduces the volume of test unit, and safe and reliable, meets the demand of site test.Wherein, existing conductive connecting device can be adopted between GIS terminal with high pressure retraction mechanism to be connected.
Above-described embodiment is the utility model preferably embodiment; but embodiment of the present utility model is not restricted to the described embodiments; change, the modification done under other any does not deviate from Spirit Essence of the present utility model and principle, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection domain of the present utility model.
Claims (10)
1. a test casing for GIS terminal test unit, for testing GIS terminal; It is characterized in that: comprise insulating cylinder body, high pressure retraction mechanism, grounded shield electrode and ground connection flange; Described ground connection flange is connected with one end of insulating cylinder body, and high pressure retraction mechanism is connected with the other end of insulating cylinder body; Described grounded shield electrode is arranged on the inwall of insulating cylinder body, and with ground connection Flange joint; One end of described insulating cylinder body and ground connection Flange joint is provided with towards the other end of insulating cylinder body the test cavity stretched into for GIS terminal, and during work, described test chamber body forms the test cavity of sealing.
2. the test casing of GIS terminal test unit according to claim 1, it is characterized in that: described high pressure retraction mechanism comprises main body and is arranged on the outlet rod in the middle part of main body, outlet rod one end is interted for being connected with GIS terminal in insulating cylinder body, and it is outer for introducing high pressure that the other end stretches out insulating cylinder body.
3. the test casing of GIS terminal test unit according to claim 2, is characterized in that: one end that described outlet rod interts in insulating cylinder body is provided with groove.
4. the test casing of GIS terminal test unit according to claim 2, is characterized in that: the described outlet rod other end stretched out outside insulating cylinder body is provided with the through hole for accessing high-voltage connection.
5. the test casing of GIS terminal test unit according to claim 1, is characterized in that: described high pressure retraction mechanism is made up of conductive metal material, and high pressure retraction mechanism is coated on the other end of insulating cylinder body, and one-body molded with insulating cylinder body mucilage binding.
6. the test casing of GIS terminal test unit according to claim 1, is characterized in that: described ground connection flange is poured into a mould with the end, one end of insulating cylinder body and is connected.
7. the test casing of GIS terminal test unit according to claim 1, is characterized in that: described ground connection flange is provided with some equally distributed installation through holes.
8. the test casing of GIS terminal test unit according to claim 1, is characterized in that: described insulating cylinder body is the insulating cylinder body be made up of epoxy glass fiber.
9. the test casing of GIS terminal test unit according to any one of claim 1 to 8, is characterized in that: described insulating cylinder body outside surface is coated with the overcoat for increasing insulation creep distance; The insulating cylinder body xsect being coated with overcoat is turriform.
10. the test casing of GIS terminal test unit according to claim 9, is characterized in that: described overcoat is silastic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520189574.8U CN204479704U (en) | 2015-03-31 | 2015-03-31 | A kind of test casing of GIS terminal test unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520189574.8U CN204479704U (en) | 2015-03-31 | 2015-03-31 | A kind of test casing of GIS terminal test unit |
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| CN204479704U true CN204479704U (en) | 2015-07-15 |
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| CN201520189574.8U Active CN204479704U (en) | 2015-03-31 | 2015-03-31 | A kind of test casing of GIS terminal test unit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104698356A (en) * | 2015-03-31 | 2015-06-10 | 广东威恒输变电工程有限公司 | Test sleeve for GIS terminal test device |
| CN105067976A (en) * | 2015-08-05 | 2015-11-18 | 国家电网公司 | Cable GIS terminal integral prefabricated AC withstand voltage testing device |
-
2015
- 2015-03-31 CN CN201520189574.8U patent/CN204479704U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104698356A (en) * | 2015-03-31 | 2015-06-10 | 广东威恒输变电工程有限公司 | Test sleeve for GIS terminal test device |
| CN104698356B (en) * | 2015-03-31 | 2018-07-31 | 广东威恒输变电工程有限公司 | A kind of test casing of GIS terminal experimental rig |
| CN105067976A (en) * | 2015-08-05 | 2015-11-18 | 国家电网公司 | Cable GIS terminal integral prefabricated AC withstand voltage testing device |
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