CN209843440U

CN209843440U - Voltage transformer shell

Info

Publication number: CN209843440U
Application number: CN201921158013.6U
Authority: CN
Inventors: 张永华; 林辉; 黄令峰; 高丹峰; 陈世杰
Original assignee: Zhejiang Yu Fan Ltd By Share Ltd
Current assignee: Zhejiang Yu Fan Ltd By Share Ltd
Priority date: 2019-07-23
Filing date: 2019-07-23
Publication date: 2019-12-24
Anticipated expiration: 2029-07-23

Abstract

The utility model provides a voltage transformer casing belongs to voltage transformer technical field. The problem that the inner wall of a shell of an existing voltage transformer is easily affected by rainwater or water vapor to enter from a wiring port, so that the shell of the voltage transformer is affected with damp is solved. The voltage transformer shell comprises a first body and a second body, wherein the first body and the second body are both cylindrical, the lower end of the first body and the upper end of the second body are connected into a whole, a first outward-turned flange is arranged at the upper end port of the first body, a second inward-turned flange is arranged at the lower end port of the second body, a cylindrical wiring opening is formed in the side wall of the second body, the wiring opening is communicated with the inside of the second body, and a blocking structure for preventing moisture in the wiring opening is arranged in the wiring opening. The utility model discloses be provided with block structure in the wiring oral area, simple structure, still have the effect that prevents the interior humidity of wiring oral area, guarantee the aridity of voltage transformer casing.

Description

Voltage transformer shell

Technical Field

The utility model belongs to the technical field of voltage transformer, a voltage transformer casing is related to.

Background

The voltage transformers and the transformers are structurally similar and are mainly used for transforming voltages on lines, but the purpose of transforming the voltages of the transformers is to transmit electric energy, the purpose of transforming the voltages of the transformers is mainly to measure the voltages, power and electric energy of the lines, or the transformers and the transformers are used for protecting valuable equipment, motors and transformers in the lines when the lines break down, and the voltages on the lines need to be transformed, because the voltages on the lines are different according to different situations of power generation, power transmission and electricity utilization, and the differences are very different, namely, some low voltages of 220V and 380V, some high voltages of tens of thousands of volts or even hundreds of thousands of volts, and the direct measurement of the low voltages or the high voltages is very inconvenient, so the voltages of the lines can be measured by using the voltage transformers.

The voltage transformer is provided with two windings, namely a primary winding and a secondary winding, wherein the two windings are arranged on or wound on an iron core, and insulation is arranged between the two windings and between the windings and the iron core, so that electrical isolation is arranged between the two windings and between the windings and the iron core.

The wire connection port part in the existing voltage transformer is not generally provided with a moisture-proof structure, such as the structure disclosed in the Chinese patent number: "201610313670.8" a high-voltage transformer casing, its concrete structure includes head and drum, the head is located drum top position, and the head is connected as an organic wholely through the welded mode with the drum, and the head top is connected with the upper flange, and the drum bottom is connected with the lower flange, and drum side upper end is equipped with the gas filled joint, and the drum gas filled joint below is equipped with the connector, is equipped with the wiring flange on the connector, is equipped with two wiring mouths on the wiring flange.

In foretell structure, this wiring mouth is circular through-hole, and this wiring mouth does not seal or moisture-proof after the wiring and handles, and after long-time the use, this casing inner wall receives rainwater or steam easily from the invasion of wiring mouth department, leads to the voltage transformer casing to wet, causes the easy ageing phenomenon that takes place of interior circuit of casing, and then causes the life of casing short, influences voltage transformer's safe operation.

Disclosure of Invention

The utility model aims at the above-mentioned problem that exists among the prior art, provide a simple structure, wiring oral area department have the voltage transformer casing of dampproofing function.

The purpose of the utility model can be realized by the following technical proposal: the utility model provides a voltage transformer casing, includes body one, body two, body one and body two all be cylindricly, the lower extreme of body one and the upper end of body two structure as an organic whole mutually, the upper end port department of body one have the ring flange one of turning up, the lower end port department of body two have the ring flange two of turning up, its characterized in that, the lateral wall of body two on have cylindric wiring oral area, the inside of wiring oral area and body two be linked together, the wiring oral area in be provided with the block structure who prevents to work a telephone switchboard moist in the oral area.

This voltage transformer casing is provided with block structure mainly in the wiring oral area, and this block structure still has the effect of preventing the interior humidity of wiring oral area, and the effect that this block structure still has does: the inside that can guarantee body two keeps dry promptly and keeps dry in the voltage transformer casing, when dry in the voltage transformer casing, and the circuit in this voltage transformer casing is difficult to take place ageing phenomenon, and the long service life of voltage transformer casing guarantees voltage transformer's safe operation.

In the above voltage transformer casing, the plugging structure includes a lining plate movably disposed in the junction portion, a cover plate disposed at an outer port of the junction portion, and a drying agent filled in the junction portion between the lining plate and the cover plate. The desiccant is generally selected from silica gel, montmorillonite and active carbon, and the above desiccants are all the prior art and can be directly purchased in the market; the desiccant has the function of absorbing moisture, and the moisture absorption rate is about 25% under normal temperature and normal humidity.

In foretell voltage transformer casing, interior bushing plate be cask form, the cask mouth of interior bushing plate has the edge of turning up, the inner port department of wiring mouth portion the undergauge screens step has, the activity of interior bushing plate set up in the wiring mouth portion and should turn up along the axial support and lean on the undergauge screens step on, the cask of interior bushing plate at the bottom of still having the air vent. The purpose of setting up like this is convenient interior bushing plate in wiring oral area assembly, convenient to use.

In foretell voltage transformer casing, the apron include with the circular body of the outer port size of wiring oral area, shape looks adaptation, the edge of circular body annular connecting portion have, annular connecting portion on be equipped with the connecting hole and this connecting hole along the circumferencial direction interval of annular connecting portion on correspond to slide and wear to be equipped with the connecting bolt that has the head, circular body link firmly on the outer terminal surface of wiring oral area through connecting bolt, all still overlap on every connecting bolt and be equipped with compression spring, compression spring's one end elasticity support and lean on annular connecting portion on, compression spring's other end elasticity support and lean on the head of connecting bolt on. When the desiccant expands, the desiccant expands against a cover plate which is moved axially outward by the action of a compression spring; the purpose of setting up like this is in order to provide more sufficient filling space for the drier moisture absorption inflation, makes things convenient for the more abundant moisture absorption of drier, has better drying effect.

In the above voltage transformer casing, the circular body is transparent. The purpose of this arrangement is to facilitate observation of the expansion of the desiccant due to moisture absorption.

In the above-mentioned voltage transformer casing, the lateral wall of body two on still set firmly the box that is the rectangle form, the box on can dismantle and link firmly the transparent case lid, the wiring oral area be in the box in. The purpose of this setting is again to carry out the closing cap processing to the interface portion, guarantees the drying of interface portion department.

In the voltage transformer shell, a wiring terminal is further arranged on the side wall of the second body in the box body, and a wiring hole communicated with the inside of the second body is further formed in the wiring terminal. The purpose of this setting is to guarantee the drying of terminal to prevent that terminal moisture from leading to the humidity in the voltage transformer casing.

In the voltage transformer shell, the side wall of the second body is further provided with a threading flange, and the side wall of the second body below the threading flange is further provided with a connecting flange. The purpose of setting up like this is to make things convenient for voltage transformer casing to connect fixedly.

In the above voltage transformer casing, the side wall of the second body is further provided with lifting lugs for fixing at intervals in the circumferential direction. The purpose of setting up like this is to make things convenient for voltage transformer casing to connect fixedly.

Compared with the prior art, the voltage transformer shell has the advantages that: be provided with block structure in the wiring oral area, simple structure, still have the effect of preventing the interior humidity of wiring oral area, guarantee the aridity of voltage transformer casing, guarantee that the circuit in the voltage transformer casing is difficult to take place ageing phenomenon, the long service life of voltage transformer casing guarantees voltage transformer's safe operation.

Drawings

Fig. 1 is a front view structural schematic diagram of the voltage transformer shell.

Fig. 2 is a schematic sectional structural view of the present voltage transformer housing.

In the figure, 1, a first body; 2. a second body; 3. a first flange plate; 4. a second flange plate; 5. a junction part; 6. an inner liner plate; 7. a desiccant; 8. turning out the edges; 9. reducing the diameter and clamping the step; 10. a vent hole; 11. a circular body; 12. an annular connecting portion; 13. a connecting bolt; 14. a compression spring; 15. a box body; 16. a transparent case cover; 17. a binding post; 18. a wiring hole; 19. a threading flange plate; 20. connecting a flange plate; 21. and (7) lifting lugs.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1 and 2, the voltage transformer shell mainly comprises a first body 1 and a second body 2, wherein the first body 1 and the second body 2 are both cylindrical, the diameter of the first body 1 is smaller than that of the second body 2, a horn-shaped connecting part is arranged between the lower end of the first body 1 and the upper end of the second body 2, the lower end of the first body 1 and the upper end of the second body 2 are connected into a whole through the connecting part, an outward-turned flange 3 is arranged at the upper end port of the first body 1, an inward-turned flange 4 is arranged at the lower end port of the second body 2, a cylindrical wiring port part 5 is arranged on the side wall of the second body 2, the wiring port part 5 is communicated with the inside of the second body 2, and a blocking structure for preventing moisture in the wiring port part 5 is arranged in the wiring port part 5.

In actual manufacturing, the specific implementation of the blocking structure is as follows: a lining plate 6 is movably arranged in the wiring port part 5, a cover plate is arranged at the outer port part of the wiring port part 5, and a drying agent 7 is filled in the wiring port part 5 between the lining plate 6 and the cover plate; in actual manufacture, the desiccant 7 is selected from silica gel, montmorillonite and activated carbon.

In actual manufacturing, the specific connection structure of the inner lining plate 6 movably arranged in the junction part 5 is as follows: the interior welt 6 is the cask form, and the cask mouth of interior welt 6 has the turn-out edge 8, and the inner port department of wiring mouth portion 5 has undergauge screens step 9, and interior welt 6 activity sets up in wiring mouth portion 5 and should turn up along 8 axial supports and lean on undergauge screens step 9, and the barrel bottom of interior welt 6 still has air vent 10.

During actual manufacturing, the specific connection structure that the outer port of the junction part 5 is provided with the cover plate is as follows: the cover plate comprises a circular body 11 matched with the outer port of the wiring port part 5 in size and shape, an annular connecting part 12 is arranged at the edge of the circular body 11, connecting holes are formed in the annular connecting part 12 at intervals along the circumferential direction of the annular connecting part 12, connecting bolts 13 with heads are correspondingly penetrated through the connecting holes in a sliding mode, the circular body 11 is fixedly connected to the outer end face of the wiring port part 5 through the connecting bolts 13, each connecting bolt 13 is further sleeved with a compression spring 14, one end of each compression spring 14 is elastically abutted against the annular connecting part 12, and the other end of each compression spring 14 is elastically abutted against the heads of the connecting bolts 13; in practical applications, the circular body 11 is transparent.

During actual manufacturing, a rectangular box body 15 is fixedly arranged on the side wall of the second body 2, a transparent box cover 16 is detachably and fixedly connected to the box body 15, and the wiring port part 5 is positioned in the box body 15; a wiring terminal 17 is further arranged on the side wall of the second body 2 in the box body 15, and a wiring hole 18 communicated with the inside of the second body 2 is further formed in the wiring terminal 17; a threading flange 19 is further arranged on the side wall of the second body 2, and a connecting flange 20 is further arranged on the side wall of the second body 2 below the threading flange 19; lifting lugs 21 for fixing are further fixedly arranged on the side wall of the second body 2 at intervals in the circumferential direction.

Those not described in detail in this specification are within the skill of the art. The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. The utility model provides a voltage transformer casing, includes body one (1), body two (2), body one (1) and body two (2) all be cylindricly, the upper end of the lower extreme of body one (1) and body two (2) link to each other as an organic whole structure, the upper end port department of body one (1) have flange dish one (3) of turning up, the lower end port department of body two (2) have flange dish two (4) of turning up, a serial communication port, the lateral wall of body two (2) on have cylindric wiring oral area (5), the inside of wiring oral area (5) and body two (2) be linked together, wiring oral area (5) in be provided with the shutoff structure that prevents to work a telephone switchboard moist in oral area (5).

2. The voltage transformer shell according to claim 1, wherein the blocking structure comprises an inner lining plate (6) movably arranged in the junction portion (5), a cover plate is arranged at the outer port of the junction portion (5), and a drying agent (7) is filled in the junction portion (5) between the inner lining plate (6) and the cover plate.

3. The voltage transformer shell according to claim 2, wherein the inner lining plate (6) is in a cylindrical shape, the cylindrical opening of the inner lining plate (6) is provided with an outward turning edge (8), the inner opening of the wiring opening (5) is provided with a reducing clamping step (9), the inner lining plate (6) is movably arranged in the wiring opening (5), the outward turning edge (8) is axially abutted against the reducing clamping step (9), and the cylindrical bottom of the inner lining plate (6) is further provided with a vent hole (10).

4. A voltage transformer housing according to claim 2, characterized in that said cover plate comprises a circular body (11) adapted in size and shape to the outer port of the terminal port portion (5), the edge of the circular body (11) is provided with an annular connecting part (12), connecting holes are arranged on the annular connecting part (12) at intervals along the circumferential direction of the annular connecting part (12), connecting bolts (13) with heads are correspondingly penetrated through the connecting holes in a sliding manner, the round body (11) is fixedly connected on the outer end face of the junction part (5) through connecting bolts (13), each connecting bolt (13) is also sleeved with a compression spring (14), one end of the compression spring (14) is elastically abutted against the annular connecting part (12), and the other end of the compression spring (14) is elastically abutted against the head part of the connecting bolt (13).

5. A voltage transformer housing according to claim 4, characterized in that said circular body (11) is transparent.

6. The voltage transformer shell according to claim 1, wherein a rectangular box body (15) is further fixedly arranged on the side wall of the second body (2), a transparent box cover (16) is detachably and fixedly connected to the box body (15), and the wiring port part (5) is located in the box body (15).

7. A voltage transformer shell according to claim 6, characterized in that a binding post (17) is further arranged on the side wall of the second body (2) in the box body (15), and the binding post (17) is further provided with a binding hole (18) communicated with the inside of the second body (2).

8. A voltage transformer shell according to claim 1, characterized in that a threading flange (19) is further provided on the side wall of the second body (2), and a connecting flange (20) is further provided on the side wall of the second body (2) below the threading flange (19).

9. The voltage transformer shell according to claim 1, wherein lifting lugs (21) for fixing are further circumferentially and fixedly arranged on the side wall of the second body (2) at intervals.