CN220984329U - High-voltage pulse sampling mutual inductor - Google Patents
High-voltage pulse sampling mutual inductor Download PDFInfo
- Publication number
- CN220984329U CN220984329U CN202322740448.4U CN202322740448U CN220984329U CN 220984329 U CN220984329 U CN 220984329U CN 202322740448 U CN202322740448 U CN 202322740448U CN 220984329 U CN220984329 U CN 220984329U
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- mounting plate
- bushing
- shell
- voltage pulse
- inner cylinder
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- 238000005070 sampling Methods 0.000 title claims abstract description 47
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- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
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- 229910052742 iron Inorganic materials 0.000 description 1
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- 239000004814 polyurethane Substances 0.000 description 1
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- Transformers For Measuring Instruments (AREA)
Abstract
The utility model discloses a high-voltage pulse sampling transformer which comprises a shell, a radio frequency connector and a sampling coil arranged in the shell, wherein the shell comprises an inner cylinder and an outer cylinder, the inner cylinder is positioned in the outer cylinder, the sampling coil is positioned between the inner cylinder and the outer cylinder, and the radio frequency connector is arranged on the outer cylinder. The high-voltage pulse sampling transformer can reduce the manufacturing cost, solves the problem of large size caused by high voltage by using space insulation through adding the bushing connection mode, and reduces the volume.
Description
Technical Field
The utility model belongs to the technical field of electrical elements, and particularly relates to a high-voltage pulse sampling transformer.
Background
With the diversification of high-power equipment, the characteristics of the high-current low-voltage and high-voltage bottom current are shown, and each key point needs to be monitored in the running process of the equipment, however, sampling at the high-voltage end becomes difficult.
At present, the common low-pressure sampling and the medium-pressure sampling are all carried out, the volume of a device for high-pressure sampling is larger to meet the pressure-resistant requirement, the high-pressure sampling is generally carried out by integrally filling and sealing with resin or polyvinyl chloride materials, and the low-pressure sampling is generally carried out by processing an outer shell body by using a whole piece of metal materials.
The existing sampling device can work normally under the high-voltage and high-current state, and the whole volume of the equipment device cannot be miniaturized due to overlarge volume and high manufacturing cost, so that the requirement of the increasing development of electronic power equipment on the power density improvement cannot be met.
Disclosure of utility model
The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides a high-voltage pulse sampling transformer, and aims to reduce manufacturing cost.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: the high-voltage pulse sampling transformer comprises a shell, a radio frequency connector and a sampling coil arranged in the shell, wherein the shell comprises an inner cylinder and an outer cylinder, the inner cylinder is positioned in the outer cylinder, the sampling coil is positioned between the inner cylinder and the outer cylinder, and the radio frequency connector is arranged on the outer cylinder.
The shell also comprises a first mounting plate, the first mounting plate and the second mounting plate are oppositely arranged, and the inner cylinder is positioned between the first mounting plate and the second mounting plate and connected with the first mounting plate and the second mounting plate.
The inner cylinder is welded with the first mounting plate and the second mounting plate.
The first mounting plate and the second mounting plate are made of thin copper plates, and the inner cylinder and the outer cylinder are made of copper tubes.
And a base plate is arranged in the shell, the sampling coil is positioned between the base plate and the first mounting plate, and the base plate is made of epoxy materials.
The shell is provided with a first bushing and a second bushing, and the shell is positioned between the first bushing and the second bushing.
The first bushing and the second bushing are made of polytetrafluoroethylene materials.
The first bushing and the second bushing penetrate into the central hole of the inner cylinder, and the first bushing and the second bushing are in threaded connection with the inner cylinder.
The high-voltage pulse sampling transformer can reduce the manufacturing cost, solves the problem of large size caused by high voltage by using space insulation through adding the bushing connection mode, and reduces the volume.
Drawings
The present specification includes the following drawings, the contents of which are respectively:
FIG. 1 is a schematic diagram of the structure of a high voltage pulse sampling transformer of the present utility model;
FIGS. 2 and 3 are schematic cross-sectional views of the high voltage pulse sampling transformer of the present utility model;
Marked in the figure as: 1. a sampling coil; 2. a radio frequency connector; 3. an inner cylinder; 4. an outer cylinder; 5. a first mounting plate; 6. a second mounting plate; 7. a backing plate; 8. a rivet; 9. a bottom plate; 10. a first bushing; 11. and a second bushing.
Detailed Description
The following detailed description of the embodiments of the utility model, given by way of example only, is presented in the accompanying drawings to aid in a more complete, accurate and thorough understanding of the concepts and aspects of the utility model, and to aid in its practice, by those skilled in the art.
It should be noted that, in the following embodiments, the "first" and "second" do not represent an absolute distinction between structures and/or functions, and do not represent a sequential order of execution, but are merely for convenience of description.
As shown in fig. 1 to 3, the utility model provides a high-voltage pulse sampling transformer, which comprises a bottom plate 9, a shell, a radio frequency connector 2 and a sampling coil 1 arranged in the shell, wherein the shell comprises an inner cylinder 3 and an outer cylinder 4, the inner cylinder 3 is positioned in the outer cylinder 4, the sampling coil 1 is positioned between the inner cylinder 3 and the outer cylinder 4, and the radio frequency connector 2 is arranged on the outer cylinder 4.
Specifically, as shown in fig. 1 to 3, the housing further includes a first mounting plate 5, the first mounting plate 5 and a second mounting plate 6 are arranged in opposition, the inner cylinder 3 is located between the first mounting plate 5 and the second mounting plate 6 and connected with the first mounting plate 5 and the second mounting plate 6, the inner cylinder 3 and the outer cylinder 4 are both of a circular ring structure, the inner cylinder 3 and the outer cylinder 4 are coaxially arranged, the outer diameter of the inner cylinder 3 is smaller than the inner diameter of the outer cylinder 4, the outer cylinder 4 is connected with the first mounting plate 5, the first mounting plate 5 and the second mounting plate 6 are also of a circular ring structure, the first mounting plate 5 and the second mounting plate 6 are coaxially arranged with the inner cylinder 3 and the outer cylinder 4, and the outer diameter of the first mounting plate 5 is larger than the outer diameter of the second mounting plate 6. Set up backing plate 7 in the casing, sampling coil 1 is located between backing plate 7 and the first mounting panel 5, and backing plate 7 is the ring shape structure, and second mounting panel 6 and backing plate 7 are located sampling coil 1's same side, and backing plate 7 uses epoxy material preparation.
During manufacturing, firstly, the bottom plate 9, the outer cylinder 4 and the radio frequency connector 2 are welded together, then the inner cylinder 3 and the first mounting plate 5 are welded together, finally, the inner cylinder 3 and the outer cylinder 4 are welded and assembled together through the first mounting plate 5 to form a shell, the sampling coil 1 is placed into the shell and is internally assembled, the backing plate 7 is padded into the shell, then the second mounting plate 6 is welded and assembled, the outside of the shell is polished once, the whole coating is completed, and finally, the first lining 10 and the second lining 11 are installed.
The inner cylinder 3 and the outer cylinder 4 are made of finished copper tubes, and the first mounting plate 5 and the second mounting plate 6 are made of thin copper plates. The shell is formed by adopting a riveting and tin soldering mode in the mutual connection mode, the structure is simple to process, the requirement on operators is low, and the manufacturing cost of the shell is greatly reduced by manufacturing the shell through the method.
The first bushing 10 and the second bushing 11 are connected in a threaded sleeved mode, and are processed by using polytetrafluoroethylene materials, wherein the polytetrafluoroethylene materials have the performances of high electric strength, high temperature resistance and extremely stable electric arc action of the materials, the first bushing 10 and the second bushing 11 penetrate through the central hole of the inner barrel 3, the first bushing 10 and the second bushing 11 are connected by using threads, and meanwhile, the inner wall of the inner barrel 3 is insulated from a sampling cable. The surface has increased the degree of depth groove during the design, increases creepage distance.
The backing plate 7 is made of epoxy material, and the backing plate 7 is used for isolating the second mounting plate 6 from the shell to form a closed loop, so that the transformer is short-circuited.
As shown in fig. 2, the bottom plate 9 and the outer tube 4 are connected by rivets 8 for via holes and soldered, and the rf connector 2 and the outer tube 4 are soldered. During welding, the heating platform is used for heating the welded materials, and then the constant-temperature soldering iron is used for welding more conveniently. Excessive heat loss caused by large metal area of the material can be avoided. And the welding efficiency and the welding quality are improved.
As shown in fig. 3, the inner tube 3 and the first mounting plate 5 are soldered together in the same manner as described above.
As shown in fig. 3, the bottom plate 9 and the outer tube 4 are soldered to each other, and the inner tube 3 and the first mounting plate 5 are soldered to each other to form a housing. The flux is used to improve the weldability of the weld. And the welding and falling of the earlier-stage assembly are avoided without adopting an integral heating mode. After the sampling coil 1 is placed according to the requirements and is connected with an electric appliance, the coil is integrally poured into the inner cavity of the shell by using silicon rubber, and the method can integrally fix the sampling coil 1 in the inner part and reduce vibration and noise when the sampling coil works at high frequency.
As shown in fig. 3, the backing plate 7 is padded into the housing, and then the second mounting plate 6 is soldered to the housing. The pad 7 prevents the second mounting board 6 from forming a closed circuit with the housing to form a short circuit state while filling the gap between the housing and the mounting board.
And (3) protecting the joint of the radio frequency connector 2 of the transformer by using a paper adhesive tape, polishing the whole surface, ensuring the surface to be flat and free of burrs, and cleaning and wiping by using absolute ethyl alcohol.
And (3) coating acrylic polyurethane paint on the surface, and completely curing at room temperature for 24 hours. The paint has the advantages of strong adhesive force, acid and alkali resistance, oil resistance, good electrical insulation performance and diversified colors.
Finally, the first bushing 10 and the second bushing 11 are fastened through threaded connection through the inner hole of the transformer.
The manufacturing cost of replacing the whole manufacturing box body by the structural mode is high, and the problem of large size caused by high voltage by using space insulation is solved by adding a bushing connection mode.
The high-voltage pulse sampling transformer with the structure has the following advantages:
1. the inner cylinder 3 and the outer cylinder 4 are machined by using copper pipes with standard specifications, the bottom plate 9, the first mounting plate 5 and the second mounting plate 6 are machined by using copper plate engraving, the surfaces are not treated, and the machining and wiping are clean. The structure is simple to process, and has low requirements on operators, and the manufacturing cost of the shell is greatly reduced by manufacturing the shell through the method;
2. The first bushing 10 and the second bushing 11 are connected in a threaded sleeved mode, and are turned by polytetrafluoroethylene bars, so that the machining mode is simple. The wall of the inner cylinder 3 of the shell is insulated from the sampling cable by utilizing the characteristics of high electric strength, stable high temperature resistance and stable action of the polytetrafluoroethylene material on an electric arc and utilizing a threaded connection structure. Meanwhile, the depth groove is formed in the outer surface of the shell, and the creepage distance of the outer surface of the shell is increased. The structure is simple to process and solves the problem of large volume caused by increasing the distance due to high pressure due to the performance of materials;
3. Compared with the existing high-voltage sampling transformer, the manufacturing process for encapsulating the whole insulating material is higher in production process difficulty. Meanwhile, the filling and sealing technology needs to use a filling and sealing mould, the manufacturing cost of the mould is high, and the structure and the manufacturing technology are easy to manufacture and greatly reduce the cost.
The utility model is described above by way of example with reference to the accompanying drawings. It will be clear that the utility model is not limited to the embodiments described above. As long as various insubstantial improvements are made using the method concepts and technical solutions of the present utility model; or the utility model is not improved, and the conception and the technical scheme are directly applied to other occasions and are all within the protection scope of the utility model.
Claims (8)
1. The utility model provides a high voltage pulse sampling mutual-inductor which characterized in that: the device comprises a shell, a radio frequency connector and a sampling coil arranged in the shell, wherein the shell comprises an inner cylinder and an outer cylinder, the inner cylinder is positioned in the outer cylinder, the sampling coil is positioned between the inner cylinder and the outer cylinder, and the radio frequency connector is arranged on the outer cylinder.
2. The high voltage pulse sampling transformer of claim 1, wherein: the shell also comprises a first mounting plate, the first mounting plate and the second mounting plate are oppositely arranged, and the inner cylinder is positioned between the first mounting plate and the second mounting plate and connected with the first mounting plate and the second mounting plate.
3. The high voltage pulse sampling transformer of claim 2, wherein: the inner cylinder is welded with the first mounting plate and the second mounting plate.
4. The high voltage pulse sampling transformer of claim 2, wherein: the first mounting plate and the second mounting plate are made of thin copper plates, and the inner cylinder and the outer cylinder are made of copper tubes.
5. The high voltage pulse sampling transformer according to any one of claims 2 to 4, wherein: and a base plate is arranged in the shell, the sampling coil is positioned between the base plate and the first mounting plate, and the base plate is made of epoxy materials.
6. The high voltage pulse sampling transformer according to any one of claims 1 to 4, wherein: the shell is provided with a first bushing and a second bushing, and the shell is positioned between the first bushing and the second bushing.
7. The high voltage pulse sampling transformer of claim 6, wherein: the first bushing and the second bushing are made of polytetrafluoroethylene materials.
8. The high voltage pulse sampling transformer of claim 6, wherein: the first bushing and the second bushing penetrate into the central hole of the inner cylinder, and the first bushing and the second bushing are in threaded connection with the inner cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322740448.4U CN220984329U (en) | 2023-10-12 | 2023-10-12 | High-voltage pulse sampling mutual inductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322740448.4U CN220984329U (en) | 2023-10-12 | 2023-10-12 | High-voltage pulse sampling mutual inductor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220984329U true CN220984329U (en) | 2024-05-17 |
Family
ID=91055365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322740448.4U Active CN220984329U (en) | 2023-10-12 | 2023-10-12 | High-voltage pulse sampling mutual inductor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220984329U (en) |
-
2023
- 2023-10-12 CN CN202322740448.4U patent/CN220984329U/en active Active
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