Insulation current transformer device suitable for high-voltage environment
By employing insulation and connection components in the current transformer design, the problems of insufficient insulation performance and inflexible measurement range adjustment under high-voltage environments are solved, enabling safe and accurate measurement of high-voltage current and improving the stability and maintenance efficiency of the power system.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SUQIAN RUIDE ELECTRIC CO LTD
- Filing Date
- 2025-04-24
- Publication Date
- 2026-04-10
AI Technical Summary
Existing current transformers have insufficient insulation performance under high-voltage environments, making it difficult to meet safety requirements. Furthermore, their measurement range adjustment is not flexible enough, requiring replacement or complex adjustments.
An insulated current transformer device comprising a housing, insulating components, and connecting components was designed. It adopts a combined insulating structure of rubber, resin, glass, and foam materials, and combines alternating magnetic field and electromagnetic induction principles to achieve flexible adjustment of the number of coil turns, ensuring insulation performance and measurement accuracy.
It improves safety and reliability under high-voltage conditions, reduces operational risks, enhances measurement accuracy and adaptability, and improves the stability and maintenance efficiency of the power system.
Smart Images
Figure CN224110119U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the electric power measurement technical field, more particularly to a kind of insulation current transformer device suitable for high voltage environment. BACKGROUND
[0002] With the continuous development of power system, the current measurement of high-voltage transmission line becomes an important link to ensure the safe operation of power system, and the traditional current measurement method often needs to directly contact high-voltage line in high-voltage environment, which not only has safety hazards, but also has high requirements for measurement equipment. In order to solve this problem, current transformer is widely used in the measurement of high-voltage current, which can convert large current in high-voltage line into small current for safe measurement.
[0003] The existing current transformer has some problems in design and use, and the insulation performance of the traditional current transformer is insufficient, which cannot meet the safety requirements in high-voltage environment. At the same time, it is not flexible enough to adjust the measurement range, and often needs to replace different transformers or make complex adjustments. Therefore, an insulation current transformer device suitable for high-voltage environment is provided. UTILITY MODEL CONTENTS
[0004] The utility model aims to provide an insulation current transformer device suitable for high-voltage environment, which aims to solve the problems raised in the above background technology.
[0005] To achieve the above purpose, the utility model provides the following technical scheme:
[0006] An insulation current transformer device suitable for high-voltage environment, comprising,
[0007] A protection mechanism comprising a protective shell, a reserved port provided on the outer surface of the protective shell, a reserved hole provided on the side wall of the protective shell, and an insulation assembly provided in the inner cavity of the protective shell;
[0008] A connecting assembly comprising a bottom plate fixedly installed on the inner wall of the protective shell, a support frame fixedly installed on the side wall of the bottom plate, an installation plate connected by bolts on the side wall of the support frame, an iron core adaptively installed on the side wall of the installation plate, an access assembly provided on the side wall of the installation plate, and an output assembly provided on the surface of the installation plate and cooperating with the access assembly.
[0009] As a preferred scheme of the utility model, the insulation assembly comprises an insulation layer fixedly connected in the inner cavity of the protective shell, a distribution layer fixedly connected on the surface of the insulation layer, a hollow layer provided on the surface of the distribution layer, and a filling layer fixedly connected in the inner cavity of the protective shell.
[0010] As a preferred scheme of the utility model, the insulating layer is made of rubber material, the distribution layer is made of resin material, the hollow layer is made of glass material, the hollow layer is hollow, and the filling layer is made of foam material.
[0011] As a preferred scheme of the utility model, the access assembly comprises a fixing seat fixedly installed on the side wall of the mounting plate, an access column fixedly installed on the side wall of the fixing seat, and an access wire electrically fusedly connected on the side wall of the access column.
[0012] As a preferred scheme of the utility model, the output assembly comprises a guide rail fixedly installed on the side wall of the mounting plate, and a sliding block slidingly connected on the inner wall of the guide rail.
[0013] As a preferred scheme of the utility model, the output assembly further comprises an output column fixedly installed on the side wall of the sliding block, and a reed electrically fusedly connected on the side wall of the sliding block.
[0014] As a preferred scheme of the utility model, the output assembly further comprises a connecting barrel sleeved on the surface of the iron core, a connecting rod fixedly installed on the side wall of the connecting barrel, and a coil wound on the surface of the connecting rod.
[0015] Compared with the prior art, the utility model has the beneficial effects that: through the setting of the protection mechanism and the connecting assembly, the safety and reliability under high pressure environment are improved, through the cooperation of the rubber layer, the resin distribution layer, the glass hollow layer and the foam filling layer of the insulating assembly, the excellent insulation performance and the uniform distribution of electric charge of the device are ensured, the electrical breakdown and the electric charge accumulation are prevented, the safety of the operator is ensured, the design of the access assembly and the output assembly makes the device can flexibly adjust the number of turns of the coil, improves the accuracy and adaptability of the measurement, the overall structure is compact, the operation is simple, the complexity and risk of the high-voltage cable current measurement are effectively reduced, thereby the maintenance efficiency and the operation stability of the power system are improved, and strong technical support is provided for the accurate measurement of high-voltage current. BRIEF DESCRIPTION OF DRAWINGS
[0016] In order to more clearly illustrate the technical scheme of the utility model embodiment, the following will be briefly introduced to the drawings needed to be used in the embodiment description, obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to these drawings without the creative labor. Wherein:
[0017] Figure 1 It is the overall structure schematic diagram of the utility model;
[0018] Figure 2 It is the protective shell and the reserved port connection schematic diagram of the utility model;
[0019] Figure 3 The utility model discloses an insulation layer and schematic diagram for the utility model;
[0020] Figure 4 The utility model discloses a bottom plate and support frame connection schematic diagram for the utility model;
[0021] Figure 5 The utility model discloses a slide rail and sliding block connection schematic diagram for the utility model.
[0022] In the figure: 100, protection mechanism;101, sheath;102, reserved mouth;103, reserved hole;104, insulation assembly;104a, insulation layer;104b, distribution layer;104c, hollow layer;104d, filling layer;200, connecting assembly;201, bottom plate;202, support frame;203, mounting plate;204, iron core;205, access assembly;205a, fixed seat;205b, access column;205c, access wire;206, output assembly;206a, guide rail;206b, sliding block;206c, output column;206d, reed;206e, connecting barrel;206f, connecting rod;206g, coil. DETAILED DESCRIPTION
[0023] In order to make the above-mentioned purpose, features and advantages of the utility model more apparent and easy to understand, the specific implementation of the utility model is described in detail below with the attached drawings of the specification.
[0024] In the following description, a lot of specific details are set forth in order to fully understand the utility model, but the utility model can also be implemented in other ways different from the description, and those skilled in the art can make similar generalization without departing from the connotation of the utility model, therefore the utility model is not limited by the specific embodiments disclosed below.
[0025] Secondly, "one embodiment" or "embodiment" referred to here means that specific features, structures or characteristics can be included in at least one implementation of the utility model. "In one embodiment" does not mean the same embodiment in different places in this specification, and is not an independent or optional embodiment that excludes other embodiments.
[0026] EMBODIMENT
[0027] REFERENCE Figures 1-5 For the utility model embodiment, the embodiment provides an insulation current transformer device suitable for high-pressure environment, comprising,
[0028] The protection mechanism 100 comprises a protective shell 101, a reserved opening 102 arranged on the outer surface of the protective shell 101, a reserved hole 103 arranged on the side wall of the protective shell 101, and an insulation assembly 104 arranged in the inner cavity of the protective shell 101.
[0029] The connecting assembly 200 comprises a bottom plate 201 fixedly installed on the inner wall of the protective shell 101, a support frame 202 fixedly installed on the side wall of the bottom plate 201, an installation plate 203 connected by bolts on the side wall of the support frame 202, an iron core 204 adaptively installed on the side wall of the installation plate 203, an access assembly 205 arranged on the side wall of the installation plate 203, and an output assembly 206 arranged on the surface of the installation plate 203 and used in cooperation with the access assembly 205.
[0030] Specifically, the insulation assembly 104 comprises an insulation layer 104a fixedly connected in the inner cavity of the protective shell 101, a distribution layer 104b fixedly connected on the surface of the insulation layer 104a, a hollow layer 104c arranged on the surface of the distribution layer 104b, and a filling layer 104d fixedly connected in the inner cavity of the protective shell 101. The insulation layer 104a is made of rubber material, the distribution layer 104b is made of resin material, the hollow layer 104c is made of glass material, the hollow layer 104c is hollow, and the filling layer 104d is made of foam material.
[0031] The hollow layer 104c is made of glass material, and the arrangement of the filling layer 104d and the distribution layer 104b ensures the fixation of the hollow layer 104c and also ensures that the hollow layer 104c will not be damaged during use of the device. The hollow layer 104c is filled with a mixture of nitrogen and carbon dioxide gas to ensure insulation during use of the device.
[0032] Further, the access assembly 205 comprises a fixed seat 205a fixedly installed on the side wall of the installation plate 203, an access column 205b fixedly installed on the side wall of the fixed seat 205a, and an access wire 205c electrically fused on the side wall of the access column 205b.
[0033] The output assembly 206 comprises a guide rail 206a fixedly installed on the side wall of the installation plate 203, and a sliding block 206b slidingly connected on the inner wall of the guide rail 206a. The output assembly 206 further comprises an output column 206c fixedly installed on the side wall of the sliding block 206b, and a reed 206d electrically fused on the side wall of the sliding block 206b. The output assembly 206 further comprises a connecting cylinder 206e sleeved on the surface of the iron core 204, a connecting rod 206f fixedly installed on the side wall of the connecting cylinder 206e, and a coil 206g wound on the surface of the connecting rod 206f.
[0034] The output assembly 206 and the access assembly 205 are provided with two groups, which are symmetrically installed in the protective shell 101 to ensure stable operation of the device.
[0035] Preferably, the slider 206b is made of copper material; the reed 206d has good elasticity, which ensures stable contact between the reed 206d and the coil 206g, and when the reed 206d contacts the coil 206g, it will push the slider 206b, which serves as a limiting function for the slider 206b.
[0036] In use, the positive pole of the ammeter is connected to the access column 205b on one side of the device through a wire, the negative pole of the ammeter is connected to the output column 206c through a wire, the inflow end of the high-voltage line is connected to the access column 205b on the other side of the sheath 101, the outflow line is connected to the output column 206c on this side, and the current is passed into the coil 206g through the access column 205b and the access wire 205c on this side. When the current moves in the coil 206g, an alternating magnetic field is generated in the iron core 204. The iron core 204 concentrates and transmits the alternating magnetic field generated by the coil 206g on this side to the area where the coil 206g on the other side is located. According to Faraday's law of electromagnetic induction, a variable magnetic field will induce an electromotive force in the coil 206g on the other side. The access column 205b and the output column 206c on this side are connected to the ammeter, which will generate an induced current. By reading the number, the current intensity in the high-voltage cable can be calculated. By turning the output column 206c, the slider 206b can be moved up and down, which will drive the reed 206d to move up and down. The reed 206d will move up and down on the surface of the coil 206g. According to the principle of short circuit, the reed 206d will be preferentially passed through, and the output from the reed 206d and the slider 206b to the output column 206c can change the number of turns of the coil 206g. The setting of the rubber insulation layer 104a ensures the insulation of the outside of the device. The distribution layer 104b made of resin material ensures uniform distribution of electric charge on the sheath 101. The setting of the glass hollow layer 104c further improves the insulation of the device. The setting of the foam filling layer 104d ensures the safety of the hollow layer 104c in operation.
[0037] In summary, not only the accurate measurement of current intensity in high-voltage environment is realized, but also the reliability and safety of the device are significantly improved through a series of insulation and safety measures. Through the connection of the ammeter and the access of the high-voltage line, the device can accurately calculate the current intensity using the principle of alternating magnetic field and electromagnetic induction. At the same time, the number of turns of the coil 206g is adjusted by the movement of the slider 206b and the reed 206d, which enhances the flexibility and adaptability of the measurement. The settings of the rubber insulation layer 104a, the resin distribution layer 104b, the glass hollow layer 104c, and the foam filling layer 104d together ensure the insulation performance and uniform distribution of electric charge in the device in high-voltage environment, preventing electrical breakdown and charge accumulation, thereby greatly reducing the operation risk, ensuring the safety of personnel and equipment, and improving the stability and maintenance efficiency of the power system.
[0038] It is important to note that the construction and arrangements of the application shown in the various exemplary embodiments are illustrative only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications can be made to the embodiments without departing from the novel teachings and advantages of the subject matter described herein. For example, elements described as integrated in a single unit can be separated, elements described as separate can be integrated, and the position, number, shape, and arrangements of elements can be varied. Accordingly, all such modifications are intended to be included within the scope of the present inventive subject matter. The order or sequence of any process or method steps can be varied or re-sequenced without departing from the general nature of the claims. Any "means plus function" clauses are intended to cover the structures described herein as performing the recited functionality and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes, and omissions can be made in the design, operating conditions, and arrangement of the exemplary embodiments without departing from the scope of the present inventive subject matter. Accordingly, the present inventive subject matter is not limited to the particular embodiments described and illustrated herein, but extends to equivalents of which the foregoing describes are intended to cover.
[0039] Furthermore, in order to provide a concise description of the exemplary embodiments, not all features of an actual implementation can be described (i.e., those related to the
[0040] It is understood that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions can be made. Such development efforts can inevitably lead to modifications, which can be different from those suggested herein, and still fall within the scope of the present inventive subject matter. Accordingly, such modifications are intended to be included within the scope of the inventive subject matter disclosed herein. In general, the disclosure given with respect to one exemplary embodiment is equally applicable to other exemplary embodiments and vice versa. Individual features of one exemplary embodiment can be combined with or substituted for individual features of another exemplary embodiment.
[0041] It should be noted that the above-mentioned embodiments are only used to illustrate the technical solutions of the present application but not to limit the present application, and although the present application is described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced by equivalents without departing from the spirit and scope of the present application, and all should be included in the scope of the claims of the present application.
Claims
1. An insulated current transformer device suitable for use in a high voltage environment, characterized by: The utility model relates to a protection mechanism (100), including the shell (101), the reservation mouth (102) of setting in the shell (101) outer surface, the reservation hole (103) of setting in the shell (101) side wall and the insulation assembly (104) of setting in the shell (101) inner chamber, The connecting assembly (200) includes a bottom plate (201) fixedly installed on the inner wall of the shell (101), a support frame (202) fixedly installed on the side wall of the bottom plate (201), an installation plate (203) connected by bolts on the side wall of the support frame (202), an iron core (204) adaptively installed on the side wall of the installation plate (203), an access assembly (205) arranged on the side wall of the installation plate (203), and an output assembly (206) arranged on the surface of the installation plate (203) and used in cooperation with the access assembly (205). The insulation assembly (104) includes an insulation layer (104a) fixedly connected in the inner chamber of the shell (101), a distribution layer (104b) fixedly connected on the surface of the insulation layer (104a), a hollow layer (104c) arranged on the surface of the distribution layer (104b), and a filling layer (104d) fixedly connected in the inner chamber of the shell (101).
2. The insulated current transformer device suitable for high voltage environment according to claim 1, characterized in that: The insulation layer (104a) is made of rubber material, the distribution layer (104b) is made of resin material, the hollow layer (104c) is made of glass material, the hollow layer (104c) is hollow, and the filling layer (104d) is made of foam material.
3. An isolated current transformer device suitable for use in a high voltage environment according to claim 2, wherein: The access assembly (205) includes a fixed seat (205a) fixedly installed on the side wall of the installation plate (203), an access column (205b) fixedly installed on the side wall of the fixed seat (205a), and an access wire (205c) electrically fusedly connected on the side wall of the access column (205b).
4. An isolated current transformer device suitable for use in a high voltage environment according to claim 3, characterized in that: The output assembly (206) includes a guide rail (206a) fixedly installed on the side wall of the installation plate (203), and a sliding block (206b) slidingly connected on the inner wall of the guide rail (206a).
5. An isolated current transformer device suitable for use in a high voltage environment according to claim 4, wherein: The output assembly (206) further includes an output column (206c) fixedly installed on the side wall of the sliding block (206b), and a reed (206d) electrically fusedly connected on the side wall of the sliding block (206b).
6. An isolated current transformer device suitable for use in a high voltage environment according to claim 5, wherein: The output assembly (206) further includes a connecting barrel (206e) sleeved on the surface of the iron core (204), a connecting rod (206f) fixedly installed on the side wall of the connecting barrel (206e), and a coil (206g) wound on the surface of the connecting rod (206f).
7. An isolated current transformer device suitable for use in a high voltage environment according to claim 6, wherein: