Special capacitor for dipping type fully-sealed structure track circuit equipment

Abstract

The utility model provides a special capacitor for dipping type full-sealed structure track circuit equipment, which belongs to the technical field of capacitors, and comprises a shell which is a capacitor main body and is made of metal materials, and one wall surface of the shell is provided with a storage groove; the shell cover is made of a metal material and is fixed on the shell through welding, and the shell cover is used for sealing the storage groove; the plurality of core groups are suspended in the storage groove through a supporting structure; the insulator is fixed on the shell cover, and a soldering lug is also fixed on the insulator; the core lead wire is fixedly connected with the core group, and the end part of the core lead wire is connected with the soldering lug; the steeping material is filled in the storage groove and is used for creating a sealed environment for the core group; according to the utility model, external gas can be ensured not to permeate into the capacitor through welding, and residual air or moisture in the capacitor can be prevented from influencing the core group through the impregnating material.

Description

TECHNICAL FIELD

[0001] The utility model relates to capacitor equipment technical field, concretely relates to a kind of special capacitor of impregnated type full-sealed structure track circuit equipment. BACKGROUND

[0002] In the field of track circuit equipment, as a key component, the performance and reliability of the capacitor directly affect the operation efficiency and safety of the entire system. Currently, a specific packaging process and sealing structure are widely used for a type of capacitor dedicated to track circuit equipment, i.e., a tuning matching unit capacitor.

[0003] Specifically, the capacitor of the prior art adopts a non-metallic shell, which cannot achieve full-sealed structure packaging. The sealing performance of the non-metallic shell is limited, and it cannot effectively isolate the capacitor from the harsh factors such as high and low temperature, humidity, smoke, and acid and alkali in the external environment, thereby affecting the normal operation of the capacitor.

[0004] In addition, the existing packaging process has difficulty in excluding air between the capacitor core groups and inside the core, and the residual air and moisture can cause increased loss, accelerated self-healing, and intensified capacity decay of the capacitor during operation, and even cause short circuit and other abnormal phenomena. SUMMARY

[0005] Therefore, the utility model provides a kind of special capacitor of impregnated type full-sealed structure track circuit equipment, which can prevent external gas from entering the capacitor by welding, and avoid the impact of residual air or moisture inside the capacitor on the core group by impregnation material.

[0006] To solve the above technical problems, the utility model provides a kind of special capacitor of impregnated type full-sealed structure track circuit equipment, which includes a shell made of metal material, a wall surface of the shell is provided with a storage groove, and the storage groove is used to store the core group.

[0007] A shell cover made of metal material is fixed on the shell by welding, and the shell cover is used to seal the storage groove. The welding can prevent external air from entering the storage groove.

[0008] A plurality of core groups are suspended in the storage groove by a support structure, which can prevent the core groups from directly contacting the shell.

[0009] An insulator is fixed on the shell cover, and a welding tab is also fixed on the insulator, which can form an electrode tab effect.

[0010] A core lead wire is fixedly connected with the core group, and the end of the core lead wire is connected with the welding tab. The core lead wire can indirectly connect the core group with the welding tab.

[0011] The impregnating material is filled in the storage groove to create a sealed environment for the core group, and the core group can also be created by the impregnating material. A vacuum environment.

[0012] The support structure is an insulating material arranged on the inner wall of the storage groove, which avoids direct contact between the core group and the shell through the insulating material.

[0013] The core group is provided in a plurality, and the core group is connected with the core lead wire between every two adjacent core groups.

[0014] The core group is 14, and is arranged in 2 rows and 7 columns.

[0015] The insulator is a circular structure, and the welding piece is welded on the insulator and the end of the welding piece is located in the inner circle of the insulator, so that the welding piece will not be in direct contact with the shell cover.

[0016] The shell cover is provided with a through hole, and the insulator is welded on the top of the through hole of the shell cover, and the core lead wire is connected with the welding piece through the through hole.

[0017] The shell or the shell cover is also provided with an impregnating hole for filling the impregnating material, that is, the impregnating material can be injected into the storage groove under the condition of negative pressure (vacuum) through the impregnating hole.

[0018] A plug is arranged in the impregnating hole, which is used to plug the impregnating hole.

[0019] Compared with the prior art, the present application has at least one of the following beneficial technical effects:

[0020] 1. Enhanced sealing performance: the shell and the shell cover made of metal material are fixed by welding, realizing the full sealing structure of the capacitor. This structure can effectively isolate the high and low temperature, humidity, smoke, acid and alkali and other harsh factors in the external environment from eroding the capacitor, thereby improving the reliability and service life of the capacitor.

[0021] 2. Optimize the internal environment: by filling the impregnating material in the storage groove, not only a sealed environment is created for the core group, but also the air and moisture inside the capacitor core group and the core can be effectively removed. This avoids the abnormal phenomena such as increased capacitor loss, accelerated self-healing, intensified capacity attenuation and short circuit caused by air and moisture residue, thereby ensuring the stable work of the capacitor.

[0022] 3. Improve the stability of the structure: the core group is suspended in the storage groove by the support structure, which avoids direct contact between the core group and the shell, reduces the influence of mechanical stress caused by vibration or temperature change on the performance of the capacitor. At the same time, this structure is also convenient for the installation and maintenance of the core group.

[0023] 4. Optimized electrical connection: the core lead is fixedly connected with the core group, and the end is connected with the welding sheet to form a reliable electrical connection path. The welding sheet is welded on the insulator and located in the inner ring of the insulator, avoiding direct contact with the shell cover, and ensuring the safety and stability of the electrical connection.

[0024] 5. Easy production and maintenance: the impregnation hole penetrating through the shell or the shell cover facilitates the injection of impregnating material, and the plug is arranged in the impregnation hole to block it, which not only ensures the smooth filling of the impregnating material, but also facilitates the subsequent maintenance and repair work. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a structural schematic view of the special capacitor of the impregnated full-sealed structure track circuit equipment.

[0026] BRIEF DESCRIPTION OF DRAWINGS

[0027] 100. Shell; 101. Storage groove; 102. Core group; 103. Core lead; 104. Impregnating material; 105. Insulating material;

[0028] 200. Shell cover; 201. Insulator; 202. Welding sheet;

[0029] 300. Impregnation hole; 301. Plug. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the following will combine the drawings of the embodiments of the present application to make a detailed description. Figure 1 The technical scheme of the embodiments of the present application is described clearly and completely. Obviously, the described embodiments are part of the embodiments of the present application, not all the embodiments. Based on the described embodiments of the present application, all other embodiments obtained by those skilled in the art belong to the scope of protection of the present application.

[0031] A special capacitor for impregnated full-sealed structure track circuit equipment, comprising a shell, a storage groove, a core group, a core lead, impregnating material and an insulating material, Figure 1As shown: including the shell 100 and the shell cover 200 two parts of the main body composition, the upper wall of the shell 100 is vertically provided with a storage groove 101, the storage groove 101 is used for placing the core group 102, the core group 102 is 14, specifically 14 core groups 102 are arranged in two rows and seven columns, each two adjacent core groups 102 are connected with the core connecting wire, the corresponding core lead wire 103 is provided with two perforations on the shell cover 200, the two ends of the core lead wire 103 are respectively threaded through the two perforations, and the shell cover 200 is fixed on the shell 100, the corresponding perforation and the core lead wire 103 are also provided with an insulating sheet and a welding sheet 202, the insulating sheet is a circular ring structure, the welding sheet 202 is vertically fixed above the inner circle of the insulating sheet, the welding sheet 202 is connected with the insulating sheet by welding, the core lead wire 103 and the welding sheet 202 are welded together, the welding sheet 202 can form the electrode sheet effect, then the insulating sheet is fixed above the perforation on the shell cover 200, the insulating sheet is fixed on the shell cover 200 by welding, and the shell cover 200 is also provided with an immersion hole 300, the immersion liquid can be injected into the storage groove 101 through the immersion hole 300 under the condition of negative pressure (vacuum), so that a vacuum environment can be created for the core group 102 and the outside air can be prevented from entering the core group 102.

[0032] Further, the wall surface inside the storage groove 101 is provided with an insulating material 105, the core group 102 can be prevented from directly contacting the shell 100 through the insulating material 105, and the influence of mechanical stress caused by vibration or temperature change on the performance of the capacitor is reduced.

[0033] Further, the immersion hole 300 is provided with a plug 301, which can plug the immersion hole 300 after the immersion of the storage groove 101 is completed.

[0034] Assembly process: first, fill the storage groove 101 with insulating material 105, then place the core group 102 in the storage groove 101, the core group 102 falls on the filling material and does not contact the shell 100, then the two ends of the core lead wire 103 are respectively threaded through the two perforations on the shell 100, and the welding sheet 202 is welded together, then the welding sheet 202 and the insulating sheet are fixed on the shell cover 200, and the shell cover 200 is fixed by welding, finally the immersion liquid is injected into the storage groove 101 through the immersion hole 300, and the plug 301 is welded into the immersion hole 300 to complete the assembly of the capacitor.

[0035] In addition, it needs to be explained that, in the description of the present application, unless otherwise specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0036] The above is the preferred embodiment of the present application, it should be pointed out that, for those skilled in the art, without departing from the principles described in the present application, a number of improvements and refinements can be made, these improvements and refinements should also be considered as the protection scope of the present application.

Claims

1. A special capacitor for an impregnated fully sealed structure track circuit apparatus, characterized by: The application relates to a capacitor, which comprises the following parts: a shell (100) made of metal material, which is a capacitor body and is provided with a storage groove (101) on one wall surface; a shell cover (200) made of metal material and fixed on the shell (100) by welding, which is used for sealing the storage groove (101); a plurality of core groups (102) suspended in the storage groove (101) by a support structure; an insulator (201) fixed on the shell cover (200), and a welding piece (202) is further fixed on the insulator (201); a core lead (103) fixedly connected with the core group (102), and the end of the core lead (103) is connected with the welding piece (202); an impregnated material (104) filled in the storage groove for creating a sealed environment for the core group (102).

2. A special capacitor for an impregnated totally sealed structure track circuit apparatus according to claim 1, characterized in that: The support structure is an insulating material (105) arranged on the inner wall surface of the storage groove, which avoids direct contact between the core group (102) and the shell (100) through the insulating material (105).

3. A special capacitor for an impregnated totally sealed structure track circuit apparatus according to claim 1, characterized in that: The core group (102) is provided in plurality, and the core lead (103) is connected between every two adjacent core groups (102).

4. A special capacitor for an impregnated totally sealed structure track circuit apparatus according to claim 3, characterized in that: The core group (102) is 14 in number and arranged in two rows and seven columns.

5. A special capacitor for an impregnated totally sealed structure track circuit apparatus according to claim 1, characterized in that: The insulator (201) is in a circular ring structure, the welding piece (202) is welded on the insulator (201), and the end of the welding piece (202) is located in the inner circle of the insulator (201).

6. A special capacitor for an impregnated totally sealed structure track circuit apparatus according to claim 5, characterized in that: The shell cover (200) is provided with a perforation, and the insulator (201) is welded on the top of the perforation of the shell cover (200).

7. A special capacitor for an impregnated totally sealed structure track circuit apparatus according to claim 1, characterized in that: The shell (100) or the shell cover (200) is further provided with an impregnation hole (300) for filling the impregnated material (104).

8. A special capacitor for an impregnated totally sealed structure track circuit apparatus according to claim 7, characterized in that: The impregnation hole (300) is provided with a plug (301).

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