Sleeve type current transformer

Abstract

The utility model discloses a sleeve type current transformer which comprises a shell module, an iron core module and a hoop fixing module, the iron core module is arranged in the shell module, and the hoop fixing module surrounds the side edge of the shell module. The shell module comprises a first shell, a second shell, a first limiting and fixing block and a second limiting and fixing block, the first shell is provided with a first iron core mounting groove, the second shell is provided with a second iron core mounting groove, and the two sides of the first shell are provided with a first mounting block and a second mounting block respectively. According to the sleeve type current transformer, linkage is achieved through the shell module, the iron core module and the clamp fixing module, the sleeve type current transformer can be connected to a cable in an opening and closing mode so as to conduct lossless current measurement, and the sleeve type current transformer has the advantages of being stable in structure, high in practicability, high in safety and the like.

Description

Technical Field

[0001] The utility model belongs to the technical field of current transformers, and in particular relates to a sleeve-type current transformer. Background Art

[0002] A current transformer is an instrument that converts a large primary current into a small secondary current for measurement based on the principle of electromagnetic induction.

[0003] The shell of the existing sleeve-type current transformer is integrally formed, and the cable needs to be passed through in advance when measuring. If the cable has been installed, it is necessary to cut the cable and then pass it through the transformer and then install the cable for measurement. This method is time-consuming, labor-intensive and may damage the cable.

[0004] Therefore, further improvements are made to the above problems. Utility Model Content

[0005] The main purpose of the utility model is to provide a sleeve-type current transformer, which is linked by a shell module, an iron core module and a clamp fixing module, and can be connected to a cable in an open and close manner to perform lossless current measurement. It has the advantages of stable structure, high practicality and high safety.

[0006] To achieve the above purpose, the utility model provides a sleeve-type current transformer, comprising a housing module, an iron core module and a clamp fixing module, wherein the iron core module is built into the housing module and the clamp fixing module surrounds the side of the housing module, wherein:

[0007] The housing module comprises a first shell, a second shell, a first limiting fixing block and a second limiting fixing block, the first shell is provided with a first core mounting groove and the second shell is provided with a second core mounting groove, the first shell is provided with a first mounting block and a second mounting block on both sides and the second shell is provided with a third mounting block and a fourth mounting block on both sides, the first mounting block and the third mounting block are in close contact with each other and the second mounting block and the fourth mounting block are in close contact with each other; the first limiting fixing block is provided with a first limiting mounting hole and the second limiting fixing block is provided with a second limiting mounting hole, the first mounting block and the third mounting block are located in the first limiting mounting hole and the second mounting block and the fourth mounting block are located in the second limiting mounting hole;

[0008] The core module is installed in the first core installation groove and the second core installation groove;

[0009] The clamp fixing module is provided with a hoop and a locking switch, the hoop surrounds the outside of the first shell and the second shell and the locking switch is installed on the hoop, and the hoop is provided with a first limiting hole, a second limiting hole, a third limiting hole and a fourth limiting hole.

[0010] As a further preferred technical solution of the above technical solution, the first shell and the second shell are tightly attached to form a circular ring shape, a first elastic member mounting groove is provided on a side of the first shell close to the second shell, and a second elastic member mounting groove and a third elastic member mounting groove are provided on a side of the second shell close to the first shell; a first elastic member is installed in the first elastic member mounting groove, a second elastic member is installed in the second elastic member mounting groove, and a third elastic member is installed in the third elastic member mounting groove.

[0011] As a further preferred technical solution of the above technical solution, the housing module further includes a cover plate, which is fixedly mounted on the first shell and the second shell and covers the core module.

[0012] As a further preferred technical solution of the above technical solution, a first limit block is provided on the outer side of the first shell and a second limit block is provided on the outer side of the second shell, the first limit block is located in the first limit hole and the second limit block is located in the second limit hole.

[0013] As a further preferred technical solution of the above technical solution, the first limiting fixing block is provided with a third limiting block and a fourth limiting block, the first mounting block and the third mounting block are located between the third limiting block and the fourth limiting block, and the first mounting block, the third mounting block, the third limiting block and the fourth limiting block are all located in the third limiting hole;

[0014] The second limiting fixing block is provided with a fifth limiting block and a sixth limiting block, the second mounting block and the fourth mounting block are located between the fifth limiting block and the sixth limiting block, and the second mounting block, the fourth mounting block, the fifth limiting block and the sixth limiting block are all located in the fourth limiting hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The utility model is a structural schematic diagram of a sleeve-type current transformer.

[0016] Figure 2 The utility model is a schematic structural diagram of a sleeve-type current transformer.

[0017] Figure 3 The utility model is a structural schematic diagram of a sleeve-type current transformer.

[0018] Figure 4 The utility model is a schematic structural diagram of a first limit fixing block and a second limit fixing block of a sleeve type current transformer.

[0019] The reference numerals include: 100, housing module; 110, first housing; 111, first core mounting groove; 112, first mounting block; 113, second mounting block; 114, first elastic member mounting groove; 115, first elastic member; 116, first limit block; 120, second housing; 121, second core mounting groove; 122, third mounting block; 123, fourth mounting block; 124, second elastic member mounting groove; 125, third elastic member mounting groove; 126, second elastic member; 127, third elastic member; 128, third elastic member; 129, third elastic member; 130, third elastic member; 131, third elastic member; 132, third elastic member; 133, third elastic member; 134, third elastic member; 135, third elastic member; 136, third elastic member; 137, third elastic member; 138, third elastic member; 139, third elastic member; 140, third elastic member; 141, third elastic member; 142, third elastic member; 143, third elastic member; 144, third elastic member; 145, third elastic member; 146, third elastic member; 147, third elastic member; 148, third elastic member; 14 ...9, third elastic member; 140, third elastic member; 141, third elastic member; 142, third elastic member; 143, third elastic member; 144, third elastic member; 145, third elastic member; 14 8. Second limit block; 130. First limit fixing block; 131. First limit mounting hole; 132. Third limit block; 133. Fourth limit block; 140. Second limit fixing block; 141. Second limit mounting hole; 142. Fifth limit block; 143. Sixth limit block; 150. Cover plate; 200. Core module; 300. Clamp fixing module; 310. Hoop; 311. First limit hole; 312. Second limit hole; 313. Third limit hole; 314. Fourth limit hole; 320. Locking switch. DETAILED DESCRIPTION

[0020] The following description is used to disclose the utility model so that those skilled in the art can implement the utility model. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations. The basic principles of the utility model defined in the following description can be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not deviate from the spirit and scope of the utility model.

[0021] The utility model discloses a sleeve-type current transformer. The specific embodiments of the utility model are further described below in conjunction with preferred embodiments.

[0022] In the embodiments of the present invention, those skilled in the art note that the cables and the like involved in the present invention may be regarded as prior art.

[0023] Preferred embodiments.

[0024] like Figure 1-4 As shown, the utility model discloses a sleeve-type current transformer, comprising a housing module 100, a core module 200 and a clamp fixing module 300, wherein the core module 200 is built in the housing module 100 and the clamp fixing module 300 surrounds the side of the housing module 100, wherein:

[0025] The housing module 100 includes a first shell 110, a second shell 120, a first limiting fixing block 130 and a second limiting fixing block 140, the first shell 110 is provided with a first core mounting groove 111 and the second shell 120 is provided with a second core mounting groove 121, the first shell 110 is provided with a first mounting block 112 and a second mounting block 113 on both sides, and the second shell 120 is provided with a third mounting block 122 and a fourth mounting block 123 on both sides, the first mounting block 112 and the third mounting block 122 are in close contact with each other, and the second mounting block 113 and the fourth mounting block 123 are in close contact with each other; the first limiting fixing block 130 is provided with a first limiting mounting hole 131 and the second limiting fixing block 140 is provided with a second limiting mounting hole 141, the first mounting block 112 and the third mounting block 122 are located in the first limiting mounting hole 131, and the second mounting block 113 and the fourth mounting block 123 are located in the second limiting mounting hole 141;

[0026] The core module 200 (with windings) is installed in the first core installation slot 111 and the second core installation slot 121;

[0027] The clamp fixing module 300 is provided with a hoop 310 and a locking switch 320. The hoop 310 surrounds the outer sides of the first shell 110 and the second shell 120 and the locking switch 320 is installed on the hoop 310. The hoop 310 is provided with a first limiting hole 311, a second limiting hole 312, a third limiting hole 313 and a fourth limiting hole 314.

[0028] Specifically, the first shell 110 and the second shell 120 are tightly attached to form a circular ring shape, and a first elastic member mounting groove 114 is provided on the side of the first shell 110 close to the second shell 120, and a second elastic member mounting groove 124 and a third elastic member mounting groove 125 are provided on the side of the second shell 120 close to the first shell 110; the first elastic member mounting groove 114 is installed with a first elastic member 115, the second elastic member mounting groove 124 is installed with a second elastic member 126, and the third elastic member mounting groove 125 is installed with a third elastic member 127.

[0029] More specifically, the housing module 100 further includes a cover plate 150 , which is fixedly mounted on the first shell 110 and the second shell 120 and covers the core module 200 .

[0030] Furthermore, a first limit block 116 is provided on the outer side of the first shell 110 and a second limit block 128 is provided on the outer side of the second shell 120 , the first limit block 116 is located in the first limit hole 311 and the second limit block 128 is located in the second limit hole 312 .

[0031] Furthermore, the first limiting fixing block 130 is provided with a third limiting block 132 and a fourth limiting block 133, the first mounting block 112 and the third mounting block 122 are located between the third limiting block 132 and the fourth limiting block 133, and the first mounting block 112, the third mounting block 122, the third limiting block 132 and the fourth limiting block 133 are all located in the third limiting hole 313;

[0032] The second limiting fixing block 140 is provided with a fifth limiting block 142 and a sixth limiting block 143, the second mounting block 113 and the fourth mounting block 123 are located between the fifth limiting block 142 and the sixth limiting block 143, and the second mounting block 113, the fourth mounting block 123, the fifth limiting block 142 and the sixth limiting block 143 are all located in the fourth limiting hole 314.

[0033] For this utility model:

[0034] When measuring the installed cable, it is necessary to dismantle the current transformer, especially to separate the first shell and the second shell, and then install them at both ends of the cable respectively so that the first shell and the second shell are in close contact, and each elastic member surrounds and fixes the cable, and then install the first limit fixing block and the second limit fixing block on one side of the first / second shell and the other side of the first / second shell respectively, so that the first mounting block and the third mounting block are located in the first limit mounting hole, and the second mounting block and the fourth mounting block are located in the second limit mounting hole, and the first shell and the second shell are preliminarily fixed;

[0035] Then, the core module is installed in the first core installation slot and the second core installation slot, and a cover plate is put on;

[0036] Finally, the hoop is sleeved on the outer shell of the first shell and the second shell so that each limit block is located in the corresponding limit hole to limit the hoop, and then locked by the locking switch, and the first shell and the second shell are fixed again, so that the current of the cable can be measured without damaging the cable, and disassembly and assembly are convenient.

[0037] It is worth mentioning that the technical features such as cables involved in this utility model patent application should be regarded as prior art. The specific structure, working principle and possible control method and spatial layout method of these technical features can be selected by conventional methods in the field and should not be regarded as the invention point of this utility model patent. This utility model patent will not be further elaborated.

[0038] For those skilled in the art, it is still possible to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A sleeve-type current transformer, characterized in that: It comprises a shell module, a core module and a clamp fixing module, wherein the core module is built into the shell module and the clamp fixing module surrounds the side of the shell module, wherein: The housing module comprises a first shell, a second shell, a first limiting fixing block and a second limiting fixing block, the first shell is provided with a first core mounting groove and the second shell is provided with a second core mounting groove, the first shell is provided with a first mounting block and a second mounting block on both sides and the second shell is provided with a third mounting block and a fourth mounting block on both sides, the first mounting block and the third mounting block are in close contact with each other and the second mounting block and the fourth mounting block are in close contact with each other; the first limiting fixing block is provided with a first limiting mounting hole and the second limiting fixing block is provided with a second limiting mounting hole, the first mounting block and the third mounting block are located in the first limiting mounting hole and the second mounting block and the fourth mounting block are located in the second limiting mounting hole; The core module is installed in the first core installation groove and the second core installation groove; The clamp fixing module is provided with a hoop and a locking switch, the hoop surrounds the outside of the first shell and the second shell and the locking switch is installed on the hoop, and the hoop is provided with a first limiting hole, a second limiting hole, a third limiting hole and a fourth limiting hole.

2. A sleeve-type current transformer according to claim 1, characterized in that: The first shell and the second shell are tightly attached to form a circular ring shape, a first elastic member mounting groove is provided on a side of the first shell close to the second shell, and a second elastic member mounting groove and a third elastic member mounting groove are provided on a side of the second shell close to the first shell; a first elastic member is installed in the first elastic member mounting groove, a second elastic member is installed in the second elastic member mounting groove, and a third elastic member is installed in the third elastic member mounting groove.

3. A sleeve-type current transformer according to claim 2, characterized in that: The housing module further includes a cover plate, which is fixedly mounted on the first shell and the second shell and covers the core module.

4. A sleeve-type current transformer according to claim 3, characterized in that: A first limiting block is disposed on the outer side of the first shell and a second limiting block is disposed on the outer side of the second shell. The first limiting block is located in the first limiting hole and the second limiting block is located in the second limiting hole.

5. A sleeve-type current transformer according to claim 4, characterized in that: The first limiting fixing block is provided with a third limiting block and a fourth limiting block, the first mounting block and the third mounting block are located between the third limiting block and the fourth limiting block, and the first mounting block, the third mounting block, the third limiting block and the fourth limiting block are all located in the third limiting hole; The second limiting fixing block is provided with a fifth limiting block and a sixth limiting block, the second mounting block and the fourth mounting block are located between the fifth limiting block and the sixth limiting block, and the second mounting block, the fourth mounting block, the fifth limiting block and the sixth limiting block are all located in the fourth limiting hole.

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