Distributed energy power station grid-connected interface device

Abstract

The utility model provides a distributed energy power station grid-connected interface device, which belongs to the technical field of energy power station grid-connected interfaces and comprises a box body, a lead A and a lead B. Two groups of fixing shafts are fixedly arranged on two sides of the bottom of the box body, mounting seats are rotatably connected to the outer sides of the two groups of fixing shafts, mounting holes are formed in the mounting seats, and the mounting holes are connected with the lead A and the lead B. Mounting holes are formed in the box body, the mounting holes completely penetrate through the mounting seat, two groups of guide rods are fixedly arranged at the bottom of the inner side of the box body, the two groups of guide rods are symmetrically arranged, wire inlet holes are formed in the two sides of the box body, the edges of the wire inlet holes are arranged to be of a fillet structure, and two protection structures are fixedly arranged on the two sides of the exterior of the box body in total. The phenomenon that the wire interface is easy to break when the wire is pulled is solved; and a cover body of an existing interface device is generally and directly fixed on a shell by using a bolt, so that the operation is inconvenient when the cover body needs to be opened at the back.

Description

Technical Field

[0001] The utility model relates to the technical field of energy power station grid-connected interface, in particular to a distributed energy power station grid-connected interface device. Background Art

[0002] Distributed photovoltaic energy power stations usually refer to power generation systems that utilize decentralized resources, have a small installed capacity, and are located near users. They are generally connected to a power grid with a voltage level of less than 35 kV or lower. Distributed photovoltaic power stations specifically refer to distributed photovoltaic power station systems that use photovoltaic modules to directly convert solar energy into electrical energy. In order to ensure the safety of power connection, photovoltaic power generation systems generally require the installation of a grid connection interface at the grid connection point.

[0003] The existing related technologies often have the following defects: the existing grid-connected interface devices usually use a direct connection method to fix the connection of the wires, but when the wires are pulled, they are easily broken at the wire interface, which can easily lead to poor contact of the wires and cause short circuits in the circuit; and the existing known grid-connected interface devices usually include a shell and a cover body and various corresponding interface components located in the shell; and the cover body of the existing interface device is usually fixed directly to the shell with bolts, which makes it inconvenient to open it for maintenance and replacement later, reducing the convenience of maintenance.

[0004] Therefore, the utility model provides a distributed energy power station grid-connected interface device. Utility Model Content

[0005] The purpose of the utility model is to solve the problem in the prior art that when the wire is pulled, it is easy to break at the wire interface; and the cover of the existing interface device is usually fixed directly to the shell with bolts, which is inconvenient to operate when it needs to be opened later, and a distributed energy power station grid-connected interface device is proposed.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a distributed energy power station grid-connected interface device, comprising: a box body, a wire A and a wire B, two groups of fixed shafts are fixedly arranged on both sides of the bottom of the box body, and the outer sides of the two groups of fixed shafts are rotatably connected to mounting seats, and mounting holes are opened inside the mounting seats, and the mounting holes completely penetrate the mounting seats, two groups of guide rods are fixedly arranged on the bottom of the inner side of the box body, and the two groups of guide rods are symmetrically arranged, and wire entry holes are opened inside the two sides of the box body, and the edges of the wire entry holes are set as rounded structures, and two protective structures are fixedly arranged on both sides of the outside of the box body, and a connecting component is slidably arranged between the two groups of guide rods, and a box cover structure is movably arranged on the top of the box body, and fixed components are fixedly arranged on both sides of the box cover structure, and the wire A and the wire B are respectively passed through the wire entry holes and fixed inside the connecting component, and the wire A and the wire B are symmetrically installed.

[0007] Preferably, two groups of U-shaped positioning frames are fixedly arranged on both sides of the top of the box body, and the two groups of positioning frames are symmetrically arranged. A connecting hole is opened inside the top side of the positioning frame, and the connecting hole completely penetrates the positioning frame.

[0008] Preferably, the protective structure includes: a protective cover and an elastic ring, the protective cover is fixedly arranged on both sides of the outside of the box body, and the protective cover is arranged on the outside of the wire entry hole; the protective cover is arranged to be a conical structure, the protective cover is arranged to be made of rubber material, the elastic ring is fixedly arranged inside the end side of the protective cover, and the inner side of the elastic ring is in contact with the outer side of wire A and wire B.

[0009] Preferably, the connecting assembly includes: a connecting frame, a conductive column A, a conductive column B, a conductive rod and an anti-slip strip, the connecting frame is slidably arranged between two groups of guide rods, a spring member is arranged between the outer side of the connecting frame and the top of the guide rod, the number of the connecting frames is set to two groups, the two groups of connecting frames are symmetrically arranged, the connecting frames are set to insulating materials, the conductive column A is fixedly arranged inside one group of connecting frames, the conductive column B is fixedly arranged inside the other group of connecting frames, the ends of the conductive column A and the conductive column B are both set to semicircular ring structures, the conductive rod is fixedly arranged on the outside of the conductive column B, the conductive rod is slidably arranged inside the conductive column A, the anti-slip strips are respectively fixedly arranged on the inner sides of the semicircular ring structures at the ends of the conductive column A and the conductive column B, the anti-slip strips are arranged in a straight line, the anti-slip strips are set to non-insulating materials, and the cross-section of the anti-slip strips is set to a triangle.

[0010] Preferably, the connecting assembly also includes: a threaded barrel, a threaded rod, a vertical rod and a pressure plate, the threaded barrel is fixedly arranged inside the top side of the connecting frame, the threaded rod is arranged inside the threaded barrel through a threaded connection, a knob is fixedly arranged on the top of the threaded rod, the vertical rod is slidably arranged inside the top side of the connecting frame, the pressure plate is fixedly arranged at the bottom end of the vertical rod, and the pressure plate and the threaded rod are arranged to be rotatably connected; an anti-slip strip is also fixedly arranged at the bottom of the pressure plate, a wire A is clamped and fixed between the pressure plate and the conductive column A, and a wire B is clamped and fixed between the pressure plate and the conductive column B.

[0011] Preferably, the box cover structure includes: a cover plate, a pressure relief hole, a fixed cylinder, a sliding rod and a sealing plate, the cover plate is movably arranged on the top of the box body, the pressure relief hole is opened inside the cover plate, the fixed cylinder is fixedly arranged inside the cover plate, the fixed cylinder is arranged in a ring array around the pressure relief hole, the sliding rod is slidably arranged inside the fixed cylinder, a spring member is arranged between the bottom end of the sliding rod and the inside of the fixed cylinder, the sealing plate is fixedly arranged on the top end of the sliding rod, and the bottom of the sealing plate is arranged on the inner side of the pressure relief hole.

[0012] Preferably, the fixing assembly includes: a fixing frame, a connecting block and a baffle, the fixing frame is fixedly arranged on both sides of the cover plate, the fixing frame is slidably arranged on the inner side of the positioning frame, the connecting block is slidably arranged inside both sides of the fixing frame, a spring member is arranged between the connecting block and the inside of the fixing frame, the bottom side of the end of the connecting block is arranged as a bevel structure, the connecting block is slidably arranged inside the connecting hole, the baffle is fixedly arranged on the top of the connecting block, and the baffle is slidably arranged inside the fixing frame.

[0013] In summary:

[0014] 1. In the utility model, the threaded rod, the threaded barrel and the vertical rod cooperate with each other, so that the threaded rod can drive the pressure plate to move up and down, so that the pressure plate clamps and fixes the wires A and B through the conductive column A and the conductive column B; when the wires A and B are pulled, the two sets of connecting frames slide horizontally along the guide rod; it can ensure that the conductive column A and the conductive rod always maintain the plug-in posture while sliding, so that it is convenient to buffer the connection between the wires A and B through the spring part, which is beneficial to prevent the wire interface from being broken when the wires are pulled; it can effectively avoid the phenomenon of short circuit and open circuit caused by poor contact of the wires.

[0015] 2. In the utility model, when the connecting block is squeezed, the connecting block will slide into the interior of the fixing frame through its bottom bevel structure; when the bottom of the fixing frame fits with the inner side of the positioning frame, the connecting block will slide into the connecting hole through the spring member, so that the fixing frame and the positioning frame are relatively fixed; and the connecting block can be easily and conveniently dragged through the baffle; thereby, the cover plate can be easily and conveniently disassembled and installed, which enhances the convenience during maintenance.

[0016] 3. In the utility model, a sliding rod, a spring part, a sealing plate and a pressure relief hole are provided; when the air pressure inside the box body increases and the temperature increases, the air pressure will push the sealing plate open to relieve pressure and dissipate heat through the pressure relief hole; when the pressure relief is completed, the sealing plate will close the pressure relief hole through the spring part and the sliding rod; thereby ensuring the safety performance of the grid-connected interface device when in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0018] Figure 2 It is a structural schematic diagram of the box body in the utility model;

[0019] Figure 3 It is a structural schematic diagram of the protective structure in the utility model;

[0020] Figure 4 It is a structural schematic diagram of the connecting frame in the utility model;

[0021] Figure 5 It is a structural schematic diagram of the connection assembly in the utility model;

[0022] Figure 6 It is a structural schematic diagram of the box cover structure and the fixing components in the utility model.

[0023] Legend: 1. Box body; 101. Fixed axis; 102. Mounting seat; 103. Mounting hole; 104. Guide rod; 105. Positioning frame; 106. Connection hole; 107. Wire entry hole; 2. Protection structure; 201. Protection cover; 202. Elastic ring; 3. Connecting assembly; 301. Connecting frame; 302. Conductive column A; 303. Conductive column B; 304. Conductive rod; 305. Anti-slip strip; 306. Threaded cylinder; 307. Threaded rod; 308. Vertical rod; 309. Pressing plate; 4. Box cover structure; 401. Cover plate; 402. Pressure relief hole; 403. Fixed cylinder; 404. Sliding rod; 405. Closing plate; 5. Fixing assembly; 501. Fixing frame; 502. Connecting block; 503. Baffle; 6. Wire A; 7. Wire B. DETAILED DESCRIPTION

[0024] The implementation of the utility model is further described in detail below in conjunction with the drawings and examples.

[0025] Embodiment 1:

[0026] As attached Figure 1 To Attachment Figure 6 As shown:

[0027] The utility model provides a distributed energy power station grid-connected interface device, comprising a box body 1, a wire A6 and a wire B7;

[0028] Two sets of fixed shafts 101 are fixedly arranged on both sides of the bottom of the box body 1, and the outer sides of the two sets of fixed shafts 101 are rotatably connected with mounting seats 102; mounting holes 103 are opened inside the mounting seats 102, and the mounting holes 103 completely penetrate the mounting seats 102; two sets of guide rods 104 are fixedly arranged on the bottom of the inner side of the box body 1, and the two sets of guide rods 104 are symmetrically arranged; both sides of the box body 1 are opened inside, and the edges of the wire entry holes 107 are set as rounded structures; two protective structures 2 are fixedly arranged on both sides of the outside of the box body 1, and the two sets of guide rods 104 are symmetrically arranged. A connecting component 3 is slidably arranged between the rods 104; a box cover structure 4 is movably arranged on the top of the box body 1, and fixing components 5 are fixedly arranged on both sides of the box cover structure 4; the wire A6 and the wire B7 are respectively passed through the wire entry holes 107 and fixed inside the connecting component 3, and the wire A6 and the wire B7 are symmetrically installed; two sets of U-shaped positioning frames 105 are fixedly arranged on both sides of the top of the box body 1, and the two sets of positioning frames 105 are symmetrically arranged; a connecting hole 106 is opened inside the top side of the positioning frame 105, and the connecting hole 106 completely penetrates the positioning frame 105;

[0029] In the embodiment of the present disclosure, the fixing assembly 5 includes: a fixing frame 501, a connecting block 502 and a baffle 503; the fixing frame 501 is fixedly arranged on both sides of the cover plate 401, and the fixing frame 501 is slidably arranged inside the positioning frame 105; the connecting block 502 is slidably arranged inside both sides of the fixing frame 501, and a spring member is arranged between the connecting block 502 and the inside of the fixing frame 501; the bottom side of the end of the connecting block 502 is set as a bevel structure, and the connecting block 502 is slidably arranged inside the connecting hole 106; the baffle 503 is fixedly arranged The baffle 503 is placed on the top of the connecting block 502, and is slidably arranged inside the fixing frame 501; its specific function is: by providing the connecting block 502, the spring member and the connecting hole 106, when the connecting block 502 is squeezed, the connecting block 502 will slide into the fixing frame 501 through its bottom bevel structure; when the bottom of the fixing frame 501 fits the inner side of the positioning frame 105, the connecting block 502 will slide into the connecting hole 106 through the spring member, so that the fixing frame 501 and the positioning frame 105 are relatively fixed;

[0030] In the disclosed embodiment, the protective structure 2 includes: a protective cover 201 and an elastic ring 202; the protective cover 201 is fixedly arranged on both sides of the outside of the box body 1, and the protective cover 201 is arranged on the outside of the wire entry hole 107; the protective cover 201 is arranged as a conical structure, and the protective cover 201 is arranged as a rubber material; the elastic ring 202 is fixedly arranged inside the end side of the protective cover 201, and the inner side of the elastic ring 202 is in contact with the outer side of the wire A6 and the wire B7; its specific function is: by providing the conical protective cover 201 and the elastic ring 202, the protective cover 201 follows the extension and retraction effect when the wire A6 and the wire B7 slide; it is beneficial to prevent dust from entering the inside of the box body 1 from the wire entry hole 107.

[0031] Embodiment 2:

[0032] As attached Figure 2 , Attachment Figure 4 With attached Figure 5 As shown:

[0033] On the basis of the first embodiment, the connection assembly 3 includes: a connection frame 301, a conductive column A302, a conductive column B303, a conductive rod 304, an anti-slip strip 305, a threaded tube 306, a threaded rod 307, a vertical rod 308 and a pressure plate 309; the connection frame 301 is slidably arranged between two groups of guide rods 104, and a spring member is arranged between the outer side of the connection frame 301 and the top of the guide rod 104; the number of the connection frames 301 is set to two groups, and the two groups of connection frames 301 are symmetrically arranged, and the connection frames 301 are set to insulating material; the conductive column A302 is fixedly arranged The conductive column B303 is fixedly arranged inside another set of connecting frames 301, and the ends of the conductive columns A302 and B303 are both arranged as semicircular ring structures; the conductive rod 304 is fixedly arranged outside the conductive column B303, and the conductive rod 304 is slidably arranged inside the conductive column A302; the anti-slip strips 305 are respectively fixedly arranged inside the semicircular ring structures at the ends of the conductive columns A302 and B303, and the anti-slip strips 305 are arranged in a straight line; the anti-slip strips 305 are set as non-insulating materials, and the cross-section of the anti-slip strips 305 is The connecting frame 301 is configured as a triangle; the threaded cylinder 306 is fixedly arranged inside the top side of the connecting frame 301; the threaded rod 307 is arranged inside the threaded cylinder 306 through a threaded connection, and a knob is fixedly arranged on the top of the threaded rod 307; the vertical rod 308 is slidably arranged inside the top side of the connecting frame 301; the pressing plate 309 is fixedly arranged at the bottom end of the vertical rod 308, and the pressing plate 309 and the threaded rod 307 are configured to be rotatably connected; the bottom of the pressing plate 309 is also fixedly arranged with an anti-slip strip 305, and the wire A6 is clamped and fixed between the pressing plate 309 and the conductive column A302, and the pressing plate 309 and the conductive column A302 are connected. The wire B7 is clamped and fixed between the electric posts B303; its specific function is: by utilizing the mutual cooperation between the threaded rod 307, the threaded tube 306 and the vertical rod 308, the threaded rod 307 can drive the pressure plate 309 to move up and down, so that the pressure plate 309 clamps and fixes the wires A6 and B7 through the conductive posts A302 and the conductive posts B303; when the wires A6 and B7 are pulled, the two sets of connecting frames 301 slide horizontally along the guide rod 104; it can ensure that the conductive post A302 and the conductive rod 304 can slide while always maintaining the plug-in posture.

[0034] Embodiment three:

[0035] As attached Figure 1 With attached Figure 6 As shown:

[0036] On the basis of the first and second embodiments, the box cover structure 4 includes: a cover plate 401, a pressure relief hole 402, a fixed cylinder 403, a sliding rod 404 and a sealing plate 405; the cover plate 401 is movably arranged on the top of the box body 1; the pressure relief hole 402 is opened inside the cover plate 401; the fixed cylinder 403 is fixedly arranged inside the cover plate 401, and the fixed cylinder 403 is arranged in a ring array around the pressure relief hole 402; the sliding rod 404 is slidably arranged inside the fixed cylinder 403, and a spring is arranged between the bottom end of the sliding rod 404 and the inside of the fixed cylinder 403 Part; the sealing plate 405 is fixedly arranged at the top of the sliding rod 404, and the bottom of the sealing plate 405 is arranged on the inner side of the pressure relief hole 402; its specific function is: by arranging the sliding rod 404 and the spring part and the sealing plate 405 and the pressure relief hole 402; when the air pressure inside the box body 1 increases, the air pressure will push the sealing plate 405 open to relieve pressure and dissipate heat through the pressure relief hole 402; when the pressure relief is completed, the sealing plate 405 will close the pressure relief hole 402 through the spring part and the sliding rod 404; thereby ensuring the safety performance of the grid-connected interface device when in use.

[0037] The specific usage and function of this embodiment are as follows:

[0038] In the utility model, when in use, the box body 1 is fixed at a designated position through the mounting seat 102 and the mounting hole 103, and then the wire A6 and the wire B7 are respectively inserted into the box body 1 through the elastic ring 202 and the wire entry hole 107; and the conductors of the wire A6 and the wire B7 are respectively placed inside the conductive column A302 and the conductive column B303; the threaded rod 307 is rotated, and the threaded rod 307 drives the pressing plate 309 to move downward through the threaded cylinder 306 and the vertical rod 308; so that the pressing plate 309 can move the wires A6 and B7 through the anti-slip strip 305 and the conductive column A302 and the conductive column B303. The wire B7 is fixed; then the two sets of fixing frames 501 are slid into the positioning frame 105, so that the connecting block 502 is squeezed, and the connecting block 502 slides into the fixing frame 501 through the bottom bevel structure. When the bottom of the fixing frame 501 fits with the inner side of the positioning frame 105, the spring member drives the connecting block 502 to slide into the connecting hole 106, so that the fixing frame 501 and the positioning frame 105 are relatively fixed, so that the cover plate 401 is fixed to the top of the box body 1; and the connecting block 502 can be pulled through the baffle 503 to slide the connecting block 502 out of the connecting hole 106 to remove the cover plate 401;

[0039] When the wire A6 and the wire B7 are pulled, the wire A6 and the wire B7 pull the connecting frame 301 to slide outside the guide rod 104, and the connecting frame 301 buffers the fixing position of the wire A6 and the wire B7 through its outer spring member; during the sliding process of the two sets of connecting frames 301, the conductive rod 304 is always inserted into the conductive column A302, so that the wire A6 and the wire B7 are always in a connected state;

[0040] When the temperature inside the box body 1 rises and its internal pressure is too high, the air pressure pushes open the sealing plate 405, allowing the high-temperature gas inside the box body 1 to escape from the pressure relief hole 402; when the air pressure inside the box body 1 returns to normal, the spring element drives the sealing plate 405 to reset through the sliding rod 404, so that the sealing plate 405 closes the top of the pressure relief hole 402, making the box body 1 in a sealed state again.

[0041] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

Claims

1. A distributed energy power station grid-connected interface device, characterized in that: include: A box body (1), a wire A (6) and a wire B (7), two groups of fixed shafts (101) are fixedly arranged on both sides of the bottom of the box body (1), the outer sides of the two groups of fixed shafts (101) are rotatably connected to mounting seats (102), a mounting hole (103) is provided inside the mounting seat (102), and the mounting hole (103) completely penetrates the mounting seat (102), two groups of guide rods (104) are fixedly arranged on the bottom of the inner side of the box body (1), the two groups of guide rods (104) are symmetrically arranged, and both sides of the box body (1) are provided with wire entry holes. (107), the edge of the wire entry hole (107) is set as a rounded structure, two protective structures (2) are fixedly arranged on both sides of the outside of the box body (1), a connecting component (3) is slidably arranged between the two groups of guide rods (104), a box cover structure (4) is movably arranged on the top of the box body (1), and fixing components (5) are fixedly arranged on both sides of the box cover structure (4), the wire A (6) and the wire B (7) are respectively passed through the wire entry hole (107) and fixed in the inside of the connecting component (3), and the wire A (6) and the wire B (7) are symmetrically installed.

2. A distributed energy power station grid-connected interface device according to claim 1, characterized in that: Two groups of U-shaped positioning frames (105) are fixedly arranged on both sides of the top of the box body (1), and the two groups of positioning frames (105) are symmetrically arranged. A connecting hole (106) is opened inside the top side of the positioning frame (105), and the connecting hole (106) completely penetrates the positioning frame (105).

3. A distributed energy power station grid-connected interface device according to claim 1, characterized in that: The protective structure (2) comprises: a protective cover (201) and an elastic ring (202); the protective cover (201) is fixedly arranged on both sides of the outside of the box body (1); and the protective cover (201) is arranged outside the wire entry hole (107); the protective cover (201) is arranged as a conical structure, the protective cover (201) is arranged as a rubber material, and the elastic ring (202) is fixedly arranged inside the end side of the protective cover (201); the inner side of the elastic ring (202) is in contact with the outer sides of the wire A (6) and the wire B (7).

4. A distributed energy power station grid-connected interface device according to claim 1, characterized in that: The connection assembly (3) comprises: a connection frame (301), a conductive column A (302), a conductive column B (303), a conductive rod (304) and an anti-slip strip (305); the connection frame (301) is slidably arranged between two groups of guide rods (104); a spring member is arranged between the outer side of the connection frame (301) and the top of the guide rod (104); the number of the connection frames (301) is arranged in two groups; the two groups of connection frames (301) are arranged symmetrically; the connection frames (301) are arranged to be made of insulating material; the conductive column A (302) is fixedly arranged inside one group of connection frames (301); the conductive column B (303) is fixedly arranged inside one group of connection frames (301); 03) is fixedly arranged inside another group of connecting frames (301), the ends of the conductive posts A (302) and the conductive posts B (303) are both arranged in semicircular ring structures, the conductive rod (304) is fixedly arranged outside the conductive post B (303), the conductive rod (304) is slidably arranged inside the conductive post A (302), the anti-slip strips (305) are respectively fixedly arranged inside the semicircular ring structures at the ends of the conductive posts A (302) and the conductive posts B (303), the anti-slip strips (305) are arranged in a straight line, the anti-slip strips (305) are arranged in a non-insulating material, and the cross-section of the anti-slip strips (305) is arranged in a triangular shape.

5. A distributed energy power station grid-connected interface device according to claim 4, characterized in that: The connection assembly (3) further comprises: a threaded barrel (306), a threaded rod (307), a vertical rod (308) and a pressure plate (309); the threaded barrel (306) is fixedly arranged inside the top side of the connection frame (301); the threaded rod (307) is arranged inside the threaded barrel (306) by threaded connection; a knob is fixedly arranged at the top of the threaded rod (307); the vertical rod (308) is slidably arranged inside the top side of the connection frame (301); the pressure plate (309) is fixedly arranged at the bottom end of the vertical rod (308); the pressure plate (309) and the threaded rod (307) are arranged to be rotatably connected; an anti-slip strip (305) is also fixedly arranged at the bottom of the pressure plate (309); a wire A (6) is clamped and fixed between the pressure plate (309) and the conductive column A (302); and a wire B (7) is clamped and fixed between the pressure plate (309) and the conductive column B (303).

6. A distributed energy power station grid-connected interface device according to claim 2, characterized in that: The box cover structure (4) comprises: a cover plate (401), a pressure relief hole (402), a fixed cylinder (403), a sliding rod (404) and a sealing plate (405); the cover plate (401) is movably arranged on the top of the box body (1); the pressure relief hole (402) is opened inside the cover plate (401); the fixed cylinder (403) is fixedly arranged inside the cover plate (401); the fixed cylinder (403) is arranged in a ring array around the pressure relief hole (402); the sliding rod (404) is slidably arranged inside the fixed cylinder (403); a spring member is arranged between the bottom end of the sliding rod (404) and the inside of the fixed cylinder (403); the sealing plate (405) is fixedly arranged on the top end of the sliding rod (404); and the bottom of the sealing plate (405) is arranged inside the pressure relief hole (402).

7. A distributed energy power station grid-connected interface device according to claim 6, characterized in that: The fixing assembly (5) comprises: a fixing frame (501), a connecting block (502) and a baffle (503); the fixing frame (501) is fixedly arranged on both sides of the cover plate (401); the fixing frame (501) is slidably arranged inside the positioning frame (105); the connecting block (502) is slidably arranged inside both sides of the fixing frame (501); a spring member is arranged between the connecting block (502) and the inside of the fixing frame (501); the bottom side of the end of the connecting block (502) is arranged as a bevel structure; the connecting block (502) is slidably arranged inside the connecting hole (106); the baffle (503) is fixedly arranged on the top of the connecting block (502); and the baffle (503) is slidably arranged inside the fixing frame (501).

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