CN202305586U - Interface device for transformer casing pipe - Google Patents
Interface device for transformer casing pipe Download PDFInfo
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- CN202305586U CN202305586U CN2011204234151U CN201120423415U CN202305586U CN 202305586 U CN202305586 U CN 202305586U CN 2011204234151 U CN2011204234151 U CN 2011204234151U CN 201120423415 U CN201120423415 U CN 201120423415U CN 202305586 U CN202305586 U CN 202305586U
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- pipe assembly
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Abstract
The utility model discloses an interface device for a transformer casing pipe, which belongs to the field of online monitoring of power transformers. The interface device comprises a stainless steel casing pipe assembly, an insulating lining pad, an insulating lining sleeve, a compression spring and a copper conducting pole, wherein the insulating lining pad and the insulating lining sleeve are sequentially embedded in a through hole of the stainless steel casing pipe assembly; the copper conducting pole is inserted into the insulating lining sleeve; the compression spring is sleeved on a step-shaped contraction part of the copper conducting pole; an inner hole is formed in the step-shaped contraction part of the copper conducting pole; and four positioning holes are formed in the right end face of the stainless steel casing pipe assembly. Through the device, an unshielded leaked current signal of a power transformer casing pipe can be transmitted to an online monitoring system sensor, so online monitoring is convenient to perform.
Description
Technical field
The utility model belongs to power transformer on-line monitoring field, more particularly, relates to a kind of interface arrangement that is used for the leakage current output of bushing shell for transformer.
Background technology
Along with China's rapid economy development, the scale of electrical network constantly enlarges, and the uncertain factor and the potential risk that influence safe operation of power system increase thereupon, thereby the user is also increasingly high to security, reliability and the quality requirements of electric power supply.Intelligent grid is a complete information architecture and infrastructure system, and it is to realize that the persistent surveillance of power customer, electric power asset, electric power operation is guaranteed that safe operation of power system is a purpose.The intelligent grid construction will be the main direction of Chinese electrical network development in following 10 years.
Power transformer is one of visual plant in the electric system, and sleeve pipe causes one of principal element of transformer fault often as an important accessory of transformer.Bushing shell for transformer is carried out online detection, can find its insulation defect early, confirm state of insulation, these each item performance index for the operation of raising system have very important significance.
According to State Grid Corporation of China, the unified strong intelligent grid planning of Southern Power Grid Company construction; The digital transformer substation construction is the important component part of strong intelligent grid; And the high voltage electric power equip ment on-line monitoring is the basis of digital transformer substation, and the power transformer sleeve pipe of unit operations such as national grid, south electric network mainly contains models such as ABB, MWB, western porcelain, Reynolds that, the main share in occuping market at present; Without exception; The bushing shell for transformer earthing device of above-mentioned model all adopts the frame mode of built-in closed and external sealing ground connection, and sleeve pipe earthing device outward appearance, the structure of each manufacturer are different, and installation dimension is not of uniform size.
Will accurately understand the insulating property of bushing shell for transformer under running status, the extraction of current signal is very crucial, has only at first to obtain true, exact current signal, and follow-up link just has the basis.At present, bushing shell for transformer end screen direct ground connection in the transformer operational process, real-time line monitor signal can't be drawn, and can not end screen Leakage Current signal be provided for the on-line monitoring system sensor.Therefore, need a kind ofly can the device that signal is drawn to be shielded at the end, this device must safety, reliable, itself have various safeguard measures, and not influence normal safe operation, daily servicing inspection and the experiment work of bushing shell for transformer.Unit such as national grid, south electric network also requires the sleeve pipe earthing device is improved design in recent years, satisfies the demand that sleeve pipe is implemented on-line monitoring.
Summary of the invention
The technical matters that solves
To the deficiency of prior art, the utility model provides a kind of interface arrangement that is used for the leakage current output of bushing shell for transformer, uses the utility model can realize power transformer sleeve pipe on-line monitoring safely and effectively.
Technical scheme
The purpose of the utility model realizes through following technical scheme:
A kind of interface arrangement that is used for bushing shell for transformer, it comprises stainless steel sleeve pipe assembly, insulating cell, insulating bushing, compression spring, copper conducting rod; Have stepped through hole in the said stainless steel sleeve pipe assembly: first through hole, second through hole, third through-hole, three through hole internal diameters increase successively; Said insulating cell center has fourth hole, and said fourth hole aperture equates that with said first through hole external diameter of insulating cell equates with the aperture of said second through hole; The external diameter of said insulating bushing equates with the aperture of said second through hole.
Said insulating cell, insulating bushing are nested in the through hole of said stainless steel sleeve pipe assembly successively; Said copper conducting rod inserts in the insulating bushing, and said compression spring is enclosed within on the stepped constriction of copper conducting rod; The diameter of said spring is greater than said first through hole.The right side of said stainless steel sleeve pipe assembly is provided with four pilot holes.Four pilot holes mainly are to be used for a stainless steel sleeve pipe assembly to be fixed on the power transformer body, make that the bottom shielding of bushing output terminal copper rod on the power transformer closely contacts with the copper conducting rod.The right-hand member that contacts with bottom shielding of bushing of copper conducting rod is the leading-in end as the casing current signal.
The diameter of said compression spring is in order to guarantee when the stainless steel sleeve pipe assembly is fixed on the power transformer greater than the reason of said first through hole; At this moment; The constriction of compression spring chucking copper conducting rod, it is tight, firm to make that copper conducting rod and bottom shielding of bushing can contact.
Have endoporus on the constriction of said copper conducting rod.The copper conducting rod is provided with the exit of the left end of endoporus as the casing current signal; In this endoporus, insert ground wire cable projected current signal; Insulating cell, insulating bushing are formed the sealing insulating space, guarantee that copper conducting rod and stainless steel sleeve pipe assembly keep fully insulation.Current signal on the bottom shielding of bushing reaches the ground wire cable through the copper conducting rod, realizes the output of casing leak current signal.
Beneficial effect
Than prior art, the novel advantage of this use is:
(1) uses the novel device of this use, can realize the current signal that power transformer end screen is revealed is transported in the on-line monitoring system sensor, so that on-line monitoring;
(2) use the novel device of this use, can not influence normal operation, daily servicing, inspection and the experiment work of power transformer sleeve pipe;
(3) the utility model simplicity of design is rational in infrastructure, is easy to make.
Description of drawings
Fig. 1 a is the structural representation of the stainless steel sleeve pipe assembly of the utility model;
Fig. 1 b is the structural representation of the insulating cell of the utility model;
Fig. 1 c is the structural representation of the insulating bushing of the utility model;
Fig. 1 d is the structural representation of the compression spring of the utility model;
Fig. 1 e is the synoptic diagram of the copper conducting rod structure of the utility model;
Fig. 2 is the one-piece construction synoptic diagram of the device of the utility model;
Fig. 3 is the right view of Fig. 2.
Label declaration among the figure:
1, stainless steel sleeve pipe assembly; 11, first through hole; 12, second through hole, 13, third through-hole; 14, pilot hole; 2, insulating cell; 21, fourth hole; 3, insulating bushing; 4, compression spring; 5, copper conducting rod.
Embodiment
Below in conjunction with Figure of description, the device of the utility model is described in detail.
Like Fig. 1 and Fig. 2, a kind of interface arrangement that is used for bushing shell for transformer, it comprises stainless steel sleeve pipe assembly 1, insulating cell 2, insulating bushing 3, compression spring 4, copper conducting rod 5; Have stepped through hole in the said stainless steel sleeve pipe assembly 1: first through hole 11, second through hole 12,13, three through hole internal diameters of third through-hole increase successively; Said insulating cell 2 centers have fourth hole 21, and said fourth hole 21 apertures equate that with said first through hole 11 external diameter of insulating cell 2 equates with the aperture of said second through hole 12; The external diameter of said insulating bushing 3 equates with the aperture of said second through hole 12; Said insulating cell 2, insulating bushing 3 are nested in the through hole of said stainless steel sleeve pipe assembly 1 successively; Said copper conducting rod 5 inserts in the insulating bushing 3, and said compression spring 4 is enclosed within on the stepped constriction of copper conducting rod 5; The diameter of said spring is greater than said first through hole 11.Have endoporus on the constriction of said copper conducting rod 5.
Like Fig. 3, the right side of said stainless steel sleeve pipe assembly 1 is provided with four pilot holes 14.
A kind of interface arrangement that is used for bushing shell for transformer of the utility model, it comprises stainless steel sleeve pipe assembly 1, insulating cell 2, insulating bushing 3, compression spring 4, copper conducting rod 5; Have stepped through hole in the said stainless steel sleeve pipe assembly 1: first through hole 11, second through hole 12,13, three through hole internal diameters of third through-hole increase successively; Said insulating cell 2 centers have fourth hole 21, and said fourth hole 21 apertures equate that with said first through hole 11 external diameter of insulating cell 2 equates with the aperture of said second through hole 12; The external diameter of said insulating bushing 3 equates with the aperture of said second through hole 12; Said insulating cell 2, insulating bushing 3 are nested in the through hole of said stainless steel sleeve pipe assembly 1 successively; Said copper conducting rod 5 inserts in the insulating bushing 3, and said compression spring 4 is enclosed within on the stepped constriction of copper conducting rod 5; The diameter of said spring is greater than said first through hole 11.Have endoporus on the left end constriction of said copper conducting rod 5.The diameter of endoporus is 4mm, and the degree of depth is 15mm.The right side of said stainless steel sleeve pipe assembly 1 is provided with four pilot holes 14.
When the stainless steel sleeve pipe assembly is fixed on the power transformer body by four pilot holes 14; The right-hand member of copper conducting rod 5 closely contacts with bottom shielding of bushing output terminal copper rod as leading-in end; Introduce current signal; The left end of copper conducting rod is as exit, and the endoporus of exit inserts the ground wire cable and draws the projected current signal.Wherein insulating cell 2, insulating bushing 3 are formed the sealing insulating space, guarantee that copper conducting rod 5 and stainless steel sleeve pipe assembly 1 keep fully insulation.Current signal on the bottom shielding of bushing of power transformer reaches the ground wire cable through copper conducting rod 5, realizes the output of casing leak current signal.
Below schematically the utility model and embodiment thereof are described, this description does not have restricted, and shown in the accompanying drawing also is one of embodiment of the utility model, and practical structure is not limited thereto.So,, under the situation that does not break away from the invention aim,, all should belong to protection scope of the present invention without creationary frame mode similar and the embodiment of designing with this technical scheme if those of ordinary skill in the art is enlightened by it.
Claims (3)
1. an interface arrangement that is used for bushing shell for transformer is characterized in that, it comprises stainless steel sleeve pipe assembly (1), insulating cell (2), insulating bushing (3), compression spring (4), copper conducting rod (5);
Have stepped through hole in the said stainless steel sleeve pipe assembly (1): first through hole (11), second through hole (12), third through-hole (13), three through hole internal diameters increase successively; Said insulating cell (2) center has fourth hole (21), and said fourth hole (21) aperture equates that with said first through hole (11) external diameter of insulating cell (2) equates with the aperture of said second through hole (12); The external diameter of said insulating bushing (3) equates with the aperture of said second through hole (12);
Said insulating cell (2), insulating bushing (3) are nested in the through hole of said stainless steel sleeve pipe assembly (1) successively; Said copper conducting rod (5) inserts in the insulating bushing (3), and said compression spring (4) is enclosed within on the stepped constriction of copper conducting rod (5); The diameter of said spring is greater than said first through hole (11).
2. a kind of interface arrangement that is used for bushing shell for transformer according to claim 1 is characterized in that, has endoporus on the constriction of said copper conducting rod (5).
3. a kind of interface arrangement that is used for bushing shell for transformer according to claim 2 is characterized in that the right side of said stainless steel sleeve pipe assembly (1) is provided with four pilot holes (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204234151U CN202305586U (en) | 2011-10-31 | 2011-10-31 | Interface device for transformer casing pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204234151U CN202305586U (en) | 2011-10-31 | 2011-10-31 | Interface device for transformer casing pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202305586U true CN202305586U (en) | 2012-07-04 |
Family
ID=46374458
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204234151U Expired - Fee Related CN202305586U (en) | 2011-10-31 | 2011-10-31 | Interface device for transformer casing pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202305586U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105810390A (en) * | 2016-04-06 | 2016-07-27 | 西安思坦电气技术有限公司 | Sleeve pipe end screen leading-out device of dry type transformer |
| CN109541412A (en) * | 2018-12-20 | 2019-03-29 | 国网上海市电力公司 | Transformer overvoltage and partial discharge comprehensive monitor system and method based on bottom shielding of bushing |
| CN113281586A (en) * | 2021-04-25 | 2021-08-20 | 武汉伊莱维特电力科技有限公司 | Real-time monitoring device for electrical equipment partial discharge detection equipment |
-
2011
- 2011-10-31 CN CN2011204234151U patent/CN202305586U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105810390A (en) * | 2016-04-06 | 2016-07-27 | 西安思坦电气技术有限公司 | Sleeve pipe end screen leading-out device of dry type transformer |
| CN109541412A (en) * | 2018-12-20 | 2019-03-29 | 国网上海市电力公司 | Transformer overvoltage and partial discharge comprehensive monitor system and method based on bottom shielding of bushing |
| CN113281586A (en) * | 2021-04-25 | 2021-08-20 | 武汉伊莱维特电力科技有限公司 | Real-time monitoring device for electrical equipment partial discharge detection equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120704 Termination date: 20151031 |
|
| EXPY | Termination of patent right or utility model |