Dry capacitor with protective structure

Abstract

This invention provides a dry-type capacitor with a protective structure, relating to the field of capacitor technology. It includes: a substrate with connectors on its left and right sides; guide posts at the four corners of the top of the substrate; a protective shell slidably mounted on the guide posts; a capacitor body inside the protective shell; a double-layered shell inside the capacitor body; cotton yarn inside the capacitor body containing a curing agent; a terminal on the top of the protective shell, the other end of which connects to a corresponding device inside the capacitor body; and a mating hole at the bottom of the connectors. This invention can indirectly and automatically open the protective and heat dissipation mechanisms when mounted on an installation platform, achieving multiple benefits and solving the problem that existing capacitors cannot automatically disengage the protective mechanism and expose the leads for operator use when installed in a suitable position.

Description

Technical Field

[0001] This invention relates to the field of capacitor technology, and in particular to a dry capacitor with a protective structure. Background Technology

[0002] A dry-type capacitor is a power capacitor consisting of a capacitor core, leads, a component board, and a casing. Dry-type capacitors generally have the advantages of high temperature resistance and high humidity resistance. However, traditional dry-type capacitors still have certain shortcomings.

[0003] Firstly, even if existing dry-type capacitors have a protection mechanism for the leads, the protection mechanism still needs to be manually opened and released. It is impossible to automatically release the protection mechanism when the dry-type capacitor is installed in a suitable position, thus exposing the leads for workers to use.

[0004] Secondly, most existing dry-type capacitors are equipped with heat dissipation mechanisms, but these mechanisms are usually kept open. Before installation and use, the capacitor will not generate a load and therefore does not need heat dissipation. However, if the heat dissipation mechanism is kept open, a large amount of dust will easily enter the capacitor before installation and use, affecting the heat dissipation of the dust. Dust prevention before use and heat dissipation after use cannot be well balanced. It is impossible to improve the structure so that the heat dissipation mechanism is opened in conjunction with the installation of the dry-type capacitor. Summary of the Invention

[0005] In view of this, the present invention provides a dry capacitor with a protective structure, which has a protective mechanism. The terminal is protected by the mechanism, reducing the probability of terminal damage and preventing the entire dry capacitor from becoming unusable due to terminal damage.

[0006] This invention provides a dry capacitor with a protective structure, specifically comprising: a substrate, with connectors provided on the left and right sides of the substrate; guide posts provided at the four corners of the top of the substrate; a protective shell slidably mounted on the guide posts; a capacitor body disposed inside the protective shell; the capacitor body having a double-layer shell inside; cotton yarn disposed inside the capacitor body, and the cotton yarn adsorbing a curing agent; a terminal provided on the top of the protective shell, and the other end of the terminal being connected to a corresponding device inside the capacitor body; and a mating hole provided at the bottom of the connectors.

[0007] Optionally, a fixing plate is provided on the top left and right sides of the base; a drive rack is provided on the front and rear sides of the fixing plate.

[0008] Optionally, one end of spring A is embedded in the top of the substrate, and the other end of spring A is embedded in the bottom of the protective shell.

[0009] Optionally, a connecting bolt is provided on the top of the connector; a force-bearing block is slidably installed inside the connector.

[0010] Optionally, the outer end of the lead screw B is provided with a gear B, and the gear B meshes with the drive rack located on the rear side.

[0011] Optionally, a nut assembly B is provided on the lead screw B; a protective component B is provided on the nut assembly B.

[0012] Optionally, the inner end of the force-bearing block has an inclined structure; the inclined surface of the force-bearing block is in contact with the bottom end of the connecting bolt.

[0013] Optionally, connecting plates are provided on the front and rear sides of the force-bearing block; a limit plate is provided at the inner end of the connecting plate.

[0014] Optionally, the top inner end of the limiting plate has an inclined structure, and the top of the limiting plate is in contact with the bottom of the protective shell.

[0015] Optionally, a heat dissipation pipe B is provided at the bottom of the inner side of the protective shell, and the outer diameter of the heat dissipation pipe B is the same as the inner diameter of the heat dissipation pipe A.

[0016] Optionally, a heat dissipation groove B is formed on the outer circumferential wall of the heat dissipation pipe B; a sealing plate is slidably installed inside the heat dissipation pipe B.

[0017] Optionally, one end of the spring C is embedded in the top of the sealing plate, and the other end of the spring C is embedded in the inner top of the heat dissipation pipe B.

[0018] Optionally, a lead screw A is provided on the top front side of the protective shell, and the threads of the two lead screws A are opposite.

[0019] Optionally, the outer end of the lead screw A is provided with a gear A, and the gear A meshes with the drive rack located on the front side.

[0020] Optionally, a nut pair A is provided on the lead screw A; a protective component A is provided on the nut pair A; and a lead screw B is provided on the top rear side of the protective shell, with the threads of the two lead screws B being opposite.

[0021] Optionally, a baffle is fixedly installed on the outer side of the connecting plate; one end of a spring B is embedded in the inner side of the baffle; the other end of the spring B is embedded in the inner side of the connector.

[0022] Optionally, air inlets are provided on the front and rear sides of the base; a heat dissipation pipe A is provided on the top of the air inlet, and the bottom end of the heat dissipation pipe A is inclined; a heat dissipation groove A is provided on the outer circumferential wall of the heat dissipation pipe A.

[0023] Beneficial effects

[0024] According to various embodiments of the present invention, compared with conventional dry capacitors, the dry capacitors are designed to withstand high temperatures and high humidity by using cotton yarn filled inside the capacitor body and the curing agent it adsorbs, in conjunction with the protective shell.

[0025] In addition, two protective shells are formed by protective component A and protective component B. The two terminals are sealed and protected by the protective shells, which reduces the probability of the two terminals being damaged or broken before the dry capacitor is installed and used, and avoids the situation where the dry capacitor cannot be used normally due to damage to the two terminals.

[0026] In addition, by manually turning the connecting bolts, the device is lowered to the screw holes of the mounting platform. During the descent, the connecting bolts push against the inclined surface of the force-bearing block, causing the connecting plate and the limiting plate to move outward. This allows the limiting plate to no longer limit the protective shell, and the device begins to descend under its own weight, thus allowing heat dissipation pipe A to be inserted into the interior of heat dissipation pipe B. During the insertion process, heat dissipation pipe A pushes the sealing plate to retract to the top of the interior of heat dissipation pipe B, facilitating communication between heat dissipation groove A and heat dissipation groove B. This allows the invention to automatically open the heat dissipation mechanism during installation, ensuring that no dust enters the interior of the dry capacitor through the heat dissipation mechanism before installation and use, and eliminating the need for manual opening of the heat dissipation mechanism, achieving two goals at once.

[0027] Furthermore, since both gears A and B mesh with the drive rack, when the protective shell descends, gears A and B, under the action of meshing with the drive rack, will drive lead screws A and B to rotate respectively. This causes the two lead screws A, under the opposing action of their own threads, to drive the nut assembly A and the protective component A to move inward relative to each other. At the same time, the two lead screws B, under the opposing action of their own threads, will drive the nut assembly B and the protective component B to move outward relative to each other. This opens the protective shell composed of protective components A and B, exposing the two terminals for normal use. Thus, this invention can automatically open the protective mechanism during installation and use, which is more time-saving and labor-saving than manual opening. It not only protects the terminals but also eliminates the need for manual opening of the protective mechanism to use the terminals, achieving two goals at once.

[0028] Moreover, when the present invention is installed on the installation platform, it can indirectly and automatically open the protection mechanism and the heat dissipation mechanism, so that the mechanisms of the present invention have a certain degree of linkage, and multiple mechanisms can cooperate with each other. In summary, the present invention can achieve multiple benefits. Attached Figure Description

[0029] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly described below.

[0030] The accompanying drawings described below are only related to some embodiments of the invention and are not intended to limit the invention.

[0031] In the attached diagram:

[0032] Figure 1 A schematic diagram of the overall structure according to an embodiment of the present invention is shown;

[0033] Figure 2 A schematic diagram of the overall disassembled structure according to an embodiment of the present invention is shown;

[0034] Figure 3 A schematic diagram of a half-section structure of heat pipe B according to an embodiment of the present invention is shown;

[0035] Figure 4 A schematic diagram of the base and connector structure according to an embodiment of the present invention is shown;

[0036] Figure 5 A schematic diagram of a half-section structure of a connector according to an embodiment of the present invention is shown;

[0037] Figure 6 A schematic diagram of a half-section structure of the protective shell according to an embodiment of the present invention is shown;

[0038] Figure 7 A schematic diagram of lead screw A and lead screw B according to an embodiment of the present invention is shown;

[0039] Figure 8 A schematic diagram of a half-section structure of heat pipe B according to an embodiment of the present invention is shown.

[0040] List of reference numerals

[0041] 1. Base; 101. Air intake component; 102. Heat sink A; 103. Heat sink A; 104. Fixing plate; 105. Drive rack; 106. Spring A;

[0042] 2. Connecting parts; 201. Connecting bolts; 202. Load-bearing block; 203. Connecting plate; 204. Limiting plate; 205. Baffle; 206. Spring B;

[0043] 3. Guide post;

[0044] 4. Protective shell; 401. Heat dissipation pipe B; 402. Heat dissipation groove B; 403. Sealing plate; 404. Spring C; 405. Lead screw A; 406. Gear A; 407. Nut pair A; 408. Protective component A; 409. Lead screw B; 4010. Gear B; 4011. Nut pair B; 4012. Protective component B;

[0045] 5. Capacitor body;

[0046] 6. Terminal. Detailed Implementation

[0047] To make the objectives, solutions, and advantages of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Unless otherwise stated, the terms used herein have their ordinary meanings in the art. The same reference numerals in the drawings represent the same parts.

[0048] Example: Please refer to Figures 1 to 8 :

[0049] This invention proposes a dry capacitor with a protective structure, comprising: a base 1, with connectors 2 on the left and right sides of the base 1; guide posts 3 at the four corners of the top of the base 1; a protective shell 4 slidably mounted on the guide posts 3; a capacitor body 5 inside the protective shell 4; the capacitor body 5 having a double-layer shell inside; cotton yarn inside the capacitor body 5, with a curing agent adsorbed within the cotton yarn; a terminal 6 on the top of the protective shell 4, the other end of which is connected to a corresponding device inside the capacitor body 5; a mating hole at the bottom of the connectors 2; fixing plates 104 on the left and right sides of the top of the base 1; and drive racks 105 on the front and rear sides of the fixing plates 104.

[0050] The cotton yarn inside the capacitor body 5, which adsorbs the fixative, can effectively protect the internal components, enabling them to withstand high temperatures and high humidity. The protective shell 4 further protects the capacitor body 5, ensuring its safety and improving its safety and stability coefficient.

[0051] Furthermore, according to embodiments of the present invention, such as Figure 1 and Figure 6 As shown, air intake components 101 are provided on the front and rear sides of the base 1; a heat dissipation pipe A102 is provided on the top of the air intake component 101, and the bottom end of the heat dissipation pipe A102 is inclined; a heat dissipation groove A103 is provided on the outer circumferential wall of the heat dissipation pipe A102; one end of a spring A106 is embedded in the top of the base 1, and the other end of the spring A106 is embedded in the bottom of the protective shell 4.

[0052] Air can be introduced into the interior of heat sink A102 through air intake 101. When heat sink A102 is inserted into heat sink B401, the air inside the protective shell 4 can circulate with the outside through the cooperation of air intake 101, heat sink A102, heat sink B401, heat sink A103 and heat sink B402. This prevents the capacitor body 5 from being too sealed, which could cause high temperature during operation and prevent air circulation, thus avoiding accidents.

[0053] In another embodiment, an air filter can be provided at the inner outer end of the air intake 101. The air filter can filter the air that is pre-flowing into the protective shell 4, and filter out dust and impurities in the air, so as to better ensure the cleanliness of the inside of the protective shell 4 and better avoid the impact of excessive dust accumulation in the protective shell 4 on the heat dissipation of the capacitor body 5 itself.

[0054] Furthermore, according to embodiments of the present invention, such as Figure 4 and Figure 5 As shown, a connecting bolt 201 is provided on the top of the connector 2; a force-bearing block 202 is slidably installed inside the connector 2; the inner end of the force-bearing block 202 has an inclined structure; the inclined surface of the force-bearing block 202 is in contact with the bottom end of the connecting bolt 201; connecting plates 203 are provided on the front and rear sides of the force-bearing block 202; a limiting plate 204 is provided on the inner end of the connecting plate 203; the top inner end of the limiting plate 204 has an inclined structure, and the top of the limiting plate 204 is in contact with the bottom of the protective shell 4; a baffle 205 is fixedly installed on the outer side of the connecting plate 203; one end of a spring B206 is embedded in the inner side of the baffle 205; the other end of the spring B206 is embedded in one side of the inside of the connector 2.

[0055] By using a screwdriver or electric screwdriver, the operator tightens the connecting bolt 201, causing it to descend. This causes the bottom of the connecting bolt 201 to push against the inclined surface of the force-bearing block 202. The force-bearing block 202, pushed against the inclined surface, begins to move the connecting plate 203 outward. This causes the connecting plate 203 to move the limiting plate 204 outward, disengaging it from the bottom of the protective shell 4. The protective shell 4 is no longer limited, allowing it to descend along the guide post 3 using its own weight. This facilitates the opening of the subsequent heat dissipation and protection mechanisms. Once the connecting bolt 201 is tightened to a certain position, it passes through the mating hole and locks into the screw hole of the mounting platform, securing the dry-type capacitor for subsequent normal use.

[0056] Furthermore, according to embodiments of the present invention, such as Figure 3 and Figure 8 As shown, a heat dissipation pipe B401 is provided at the bottom of the inner part of the protective shell 4, and the outer diameter of the heat dissipation pipe B401 is the same as the inner diameter of the heat dissipation pipe A102; a heat dissipation groove B402 is provided on the outer circumferential wall of the heat dissipation pipe B401; a sealing plate 403 is slidably installed inside the heat dissipation pipe B401; one end of a spring C404 is embedded in the top of the sealing plate 403, and the other end of the spring C404 is embedded in the top of the heat dissipation pipe B401; a lead screw A405 is provided on the front side of the top of the protective shell 4, and the threads of the two lead screws A405 are opposite; a gear A406 is provided on the outer end of the lead screw A405, and the gear A406 meshes with the drive rack 105 located on the front side;

[0057] When the protective shell 4 lowers the heat pipe B401 to a certain position, the positions of heat pipe B401 and heat pipe A102 are vertically aligned (see reference). Figure 3 Heat pipe A102 will be inserted into the interior of heat pipe B401, causing heat pipe A102 to push against sealing plate 403, causing it to contract under the pushing force, so that heat sink B402 and heat sink A103 can be connected, thereby allowing outside air to circulate with the air inside the protective shell 4, achieving heat dissipation and reducing the temperature generated by the capacitor body 5 during operation.

[0058] Furthermore, according to embodiments of the present invention, such as Figure 2 and Figure 7 As shown, a nut pair A407 is provided on the lead screw A405; a protective member A408 is provided on the nut pair A407; a lead screw B409 is provided on the top rear side of the protective shell 4, and the threads of the two lead screws B409 are opposite; a gear B4010 is provided on the outer end of the lead screw B409, and the gear B4010 meshes with the drive rack 105 located on the rear side; a nut pair B4011 is provided on the lead screw B409; a protective member B4012 is provided on the nut pair B4011.

[0059] When the protective shell 4 descends, gears A406 and B4010, engaged with the drive rack 105, drive lead screws A405 and B409 to rotate respectively. This causes the two lead screws A405, under the opposing action of their own threads, to move the nut assembly A407 and protective component A408 inwards relative to each other. Simultaneously, the two lead screws B409, under the opposing action of their own threads, drive the nut assembly B4011 and protective component B4012 outwards relative to each other, opening protective components A408 and B4012 and exposing terminal 6 to the outside environment for normal use (see reference). Figure 7 ).

[0060] The specific usage and function of this embodiment are as follows: In use, first align the mating hole at the bottom of the connector 2 with the screw hole on the mounting platform. Then, the operator uses a screwdriver or electric screwdriver to turn the connecting bolt 201, causing the connecting bolt 201 to descend due to the turning. This causes the bottom end of the connecting bolt 201 to push down the inclined surface of the force block 202, which in turn causes the force block 202 to move outward due to the pushing effect of the inclined surface. This causes the connecting plate 203 to move outward and separate the limiting plate 204 from the bottom of the protective shell 4, so that the protective shell 4 is no longer limited. This allows the protective shell 4 to descend along the guide post 3 using its own weight. When the connecting bolt 201 is turned to a certain position, the connecting bolt 201 will pass through the mating hole and lock into the screw hole on the mounting platform, thus fixing the dry capacitor and facilitating its normal use. This completes the installation work.

[0061] When the protective shell 4 descends, gears A406 and B4010, engaged with the drive rack 105, drive lead screws A405 and B409 to rotate respectively. This causes the two lead screws A405, with their opposing threads, to move the nut assembly A407 and protective component A408 inwards relative to each other. Simultaneously, the two lead screws B409, with their opposing threads, drive the nut assembly B4011 and protective component B4012 outwards relative to each other, opening protective components A408 and B4012 and exposing terminal 6 to the outside environment for normal use. Furthermore, when the protective shell 4 moves the heat dissipation pipe B4... After 01 descends to a certain position, because the positions of heat dissipation pipe B401 and heat dissipation pipe A102 are vertically aligned, heat dissipation pipe A102 will be inserted into the interior of heat dissipation pipe B401, causing heat dissipation pipe A102 to push against sealing plate 403, causing it to contract under the pushing force, which facilitates the connection between heat dissipation slot B402 and heat dissipation slot A103, thereby allowing the outside air to circulate with the air inside the protective shell 4, achieving heat dissipation and reducing the temperature generated by the capacitor body 5 during operation. This completes the work after installation, making it easy to connect the capacitor body 5 to the corresponding external equipment through terminal 6, so that the capacitor body 5 can be put into normal use.

[0062] Finally, it should be noted that when describing the position of each component and the mating relationship between them, the present invention usually uses one or a pair of components as examples. However, those skilled in the art should understand that such positions, mating relationships, etc., are also applicable to other components or other pairs of components.

[0063] The above description is merely an exemplary embodiment of the present invention and is not intended to limit the scope of protection of the present invention, which is determined by the appended claims.

Claims

1. A dry capacitor with a protective structure, characterized in that, include: A base (1) is provided with connectors (2) on its left and right sides; guide posts (3) are provided at the four corners of the top of the base (1); a protective shell (4) is slidably mounted on the guide posts (3); a capacitor body (5) is provided inside the protective shell (4); a docking hole is provided at the bottom of the connectors (2); a fixing plate (104) is provided on the left and right sides of the top of the base (1); a drive rack (105) is provided on the front and rear sides of the fixing plate (104). The protective shell (4) has a lead screw A (405) on its top front side, and the threads of the two lead screws A (405) are opposite; a gear A (406) is provided at the outer end of the lead screw A (405), and the gear A (406) meshes with the drive rack (105) located on the front side; a nut pair A (407) is provided on the lead screw A (405); a protective element A (408) is provided on the nut pair A (407); the protective shell (4) has a lead screw B (409) on its top rear side, and the threads of the two lead screws B (409) are opposite; a gear B (4010) is provided at the outer end of the lead screw B (409), and the gear B (4010) meshes with the drive rack (105) located on the rear side; a nut pair B (4011) is provided on the lead screw B (409); a protective element B (4012) is provided on the nut pair B (4011); Air inlets (101) are provided on the front and rear sides of the base (1); a heat dissipation pipe A (102) is provided on the top of the air inlet (101), and the bottom end of the heat dissipation pipe A (102) is inclined; a heat dissipation groove A (103) is provided on the outer circumferential wall of the heat dissipation pipe A (102); one end of a spring A (106) is embedded in the top of the base (1), and the other end of the spring A (106) is embedded in the bottom of the protective shell (4); a connecting bolt (201) is provided on the top of the connector (2); a force-bearing block (202) is slidably installed inside the connector (2); the inner end of the force-bearing block (202) is inclined. The structure includes: the inclined surface of the force-bearing block (202) is attached to the bottom end of the connecting bolt (201); connecting plates (203) are provided on the front and rear sides of the force-bearing block (202); a limiting plate (204) is provided at the inner end of the connecting plate (203); the top inner end of the limiting plate (204) is inclined, and the top of the limiting plate (204) is in contact with the bottom of the protective shell (4); a baffle (205) is fixedly installed on the outer side of the connecting plate (203); one end of the spring B (206) is embedded in the inner side of the baffle (205); the other end of the spring B (206) is embedded in the inner side of the connector (2); The protective shell (4) has a heat dissipation pipe B (401) at its inner bottom end, and the outer diameter of the heat dissipation pipe B (401) is the same as the inner diameter of the heat dissipation pipe A (102); a heat dissipation groove B (402) is provided on the outer circumference of the heat dissipation pipe B (401); a sealing plate (403) is slidably installed inside the heat dissipation pipe B (401); one end of a spring C (404) is embedded in the top of the sealing plate (403), and the other end of the spring C (404) is embedded in the top of the heat dissipation pipe B (401).

2. A dry capacitor with a protective structure as described in claim 1, characterized in that: The capacitor body (5) has a double-layer shell inside; the inside of the capacitor body (5) is provided with cotton yarn, and the cotton yarn is adsorbed with curing agent; the top of the protective shell (4) is provided with a terminal (6), and the other end of the terminal (6) is connected to the corresponding device inside the capacitor body (5).

Images