A wiring structure for pressure-bearing equipment

Abstract

The present invention proposes a wiring structure for pressure-bearing equipment, including a pressure-bearing equipment housing, a protective cover, a terminal, a power cord, a cover plate and a terminal connection plate. The cover plate is sealed on the protective cover and connected with the protective cover to form a protective box with a wiring cavity inside; the protective cover is welded to the outer wall of the pressure-bearing equipment housing, and the terminal connection plate is arranged in the protective cover, with its back abutting against the bottom of the protective cover, and the terminal connection position thereon is arranged one-to-one with the external connector of the terminal and the power cord connector of the power cord; the power cord connector of the power cord, the external connector of the terminal and the terminal connection plate are fastened and connected by terminal bolts, power cord connector perforations, external connector perforations of the terminal and the mounting holes of the terminal connection plate. The present invention has a simple structure and is easy to produce. It not only meets the high reliability requirements of waterproof, dustproof and electric shock proof, but also is suitable for use in relatively harsh environments, greatly prolonging the service life of the core components of the pressure-bearing equipment and improving the stable operation time of the pressure-bearing equipment.

Description

Technical Field

[0001] The invention relates to the field of electromechanical refrigeration technology and pressure-bearing equipment technology, in particular to a wiring structure for pressure-bearing equipment, and in particular to a wiring structure for a scroll compressor. Background Art

[0002] The scroll compressors currently on the market cannot be placed in a closed environment with protective conditions due to their large size. The wiring structure connected to the scroll compressor is prone to failure under unprotected conditions. For example, rainwater enters the wiring terminals of the wiring structure, causing the wiring terminals to burn, resulting in failure of the scroll compressor. On the other hand, as the speed and power of the scroll compressor continue to increase, the vibration continues to increase. The existing M5 terminal connection bolts and the corresponding terminal connection plates and terminals can no longer meet the use of the scroll compressor under large vibration conditions. The bolts are frequently loosened due to insufficient tightening force of the terminal connection bolts, resulting in ignition failures of the scroll compressor. Therefore, it is necessary to improve the wiring structure of the scroll compressor to meet the use and reliability requirements of pressure-bearing equipment or large scroll compressors. Summary of the invention

[0003] The purpose of the present invention is to propose a wiring structure for pressure-bearing equipment, which has a simple structure, is easy to produce, meets the requirements of waterproofing, dustproofing and electric shock prevention, has high reliability, can be used in relatively harsh environments, greatly extends the service life of core components of pressure-bearing equipment, and improves the stable operation time of pressure-bearing equipment.

[0004] The purpose of the present invention can be achieved through the following technical solutions:

[0005] A wiring structure for pressure-bearing equipment, comprising a pressure-bearing equipment shell, a protective cover, a terminal, a power line and a cover plate; the pressure-bearing equipment shell has a terminal opening; the protective cover is a shell structure with a protective cover opening at the top and a terminal through-hole at the bottom, the cover plate is sealed on the protective cover opening of the protective cover, and is connected with the protective cover to form a protective box with a wiring cavity inside; the protective cover is connected to the outer wall of the pressure-bearing equipment shell by the bottom, and its terminal through-hole faces the terminal opening of the pressure-bearing equipment shell; the terminal includes a terminal seat, and an external connector and an internal connector provided at both ends of the terminal seat, and the external connector is provided at the bottom of the terminal seat. The end of the connector has an external connector through-hole, and the end of the internal connector has an internal connector through-hole; the terminal is fixedly mounted on the terminal opening of the pressure-bearing equipment housing by a terminal seat, the external connector of the terminal is inserted into the wiring cavity of the protection box, and the internal connector is arranged in the pressure-bearing equipment housing; the end of the power cord has a power cord connector and a power cord connector through-hole, the power cord connector of the power cord is inserted into the wiring cavity of the protection box and connected with the external connector of the terminal; it also includes a terminal connection plate, the terminal connection plate is a block structure, and has at least one terminal connection position on its front, each terminal connection position includes an end plate groove, 1 end plate through hole and 1 mounting hole; the end plate groove is arranged horizontally along the front of the terminal connection plate and extends from near the middle of the terminal connection plate to the edge of the terminal connection plate, and the edge of the terminal connection plate corresponds to the outer end of the end plate groove and has a groove port; the end plate through hole is vertically arranged near the inner end of the end plate groove and is connected with the inner end of the end plate through hole; the mounting hole is vertically arranged on the inner end of the end plate groove; the terminal connection plate is arranged in the protective cover, and the power line connector of the power line is connected to the external connector of the terminal post through the terminal connection plate; the back of the terminal connection plate is abutted against the bottom of the protective cover, and the terminal connection position thereon The external connector of the terminal post and the power cord connector of the power cord are arranged one by one in correspondence; the external connector of the terminal post passes through the end plate through-hole of the terminal connection plate and has an external connector bending section bent in the end plate groove, so that the external connector through-hole of the terminal post faces the mounting hole of the terminal connection plate; the power cord connector of the power cord passes through the end plate groove of the terminal connection plate from the groove end of the terminal connection plate and rests on the external connector bending section of the terminal post, and the power cord connector of the power cord, the external connector of the terminal post and the terminal connection plate are fastened and connected through terminal bolts, power cord connector through-hole, external connector through-hole of the terminal post and mounting hole of the terminal connection plate.

[0006] Preferably, the end of the mounting hole on each terminal connection position of the terminal connection plate to the back side of the terminal connection plate also has an end through hole with a narrowed aperture, and a terminal nut is provided in the mounting hole of each terminal connection position, and the terminal bolt is threadedly connected to the terminal nut in the mounting hole.

[0007] Preferably, each terminal connection position of the terminal connection plate further has a strip-shaped boss disposed laterally on the inner side wall of the end plate groove.

[0008] Preferably, the back side of each terminal connection position of the terminal connection plate has a raised back boss, and the back boss is arranged corresponding to the mounting hole of the terminal connection plate, so that there is a drainage gap between adjacent back bosses and between the back side of the terminal connection plate and the outer wall of the pressure-bearing equipment shell.

[0009] Preferably, the terminal connecting plate has three terminal connection positions, and the three end plate grooves of the three terminal connection positions are arranged close to each other in sequence. The end plate groove in the middle is partially staggered with the end plate grooves on both sides thereof, that is, the inner end of the end plate groove in the middle is arranged close to the outer ends of the end plate grooves on both sides thereof, and the three end plates of the three terminal connection positions are perforated in a triangular shape and evenly distributed.

[0010] Preferably, the pressure-bearing equipment is a scroll compressor, the housing of the pressure-bearing equipment is a scroll compressor housing, a motor is arranged therein, the terminal and the power cord are both three-phase structures, and the inner connector of the terminal is connected to the lead-out wire of the motor.

[0011] The present invention has the following outstanding substantive features and remarkable progress:

[0012] 1. The wiring structure for pressure-bearing equipment of the present invention is achieved by welding a protective cover in a whole circle on a pressure-bearing equipment shell that is dustproof and anti-electric shock. The terminal connecting plate is built into the protective cover and connected to the pressure-bearing equipment through the terminal post, so that the pressure-bearing equipment as a whole is waterproof, dustproof and anti-electric shock, with high reliability, and meets the international standards for shell protection.

[0013] 2. The wiring structure for pressure-bearing equipment of the present invention forms a passage for quickly guiding condensed water through the drainage gap on the terminal connecting plate, thereby preventing the accumulation of condensed water, increasing the service life of the terminal connecting plate and the terminal posts, and avoiding short-circuit failure of the live parts of the pressure-bearing equipment.

[0014] 3. The wiring structure for pressure-bearing equipment of the present invention provides a strip boss on the terminal connection position of the three-phase structure of the terminal connection plate to increase the creepage distance, prevent the creepage from spreading, and improve the high-voltage resistance of the terminal connection plate.

[0015] 4. The wiring structure for pressure-bearing equipment of the present invention forms a bolt connection structure through the end through hole with a narrowed aperture on the terminal connection plate, thereby improving the fastening force of the connection between the power cord and the terminal post and ensuring the metal contact area between the electrical connection plug on the external connector of the terminal post and the power cord, greatly increasing the current flow area, reducing resistance, and reducing the heat generated by the energized circuit, effectively increasing the service life of the terminal post and avoiding loosening and sparking of the pressure-bearing equipment during long-term operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the installation structure of the wiring structure for pressure-bearing equipment of the present invention.

[0017] Figure 2 It is a cross-sectional schematic diagram of the wiring structure for pressure-bearing equipment of the present invention.

[0018] Figure 3 The present invention is a wiring diagram of a terminal connection plate of a wiring structure for pressure-bearing equipment.

[0019] Figure 4 The present invention is a cross-sectional view of a terminal connection plate of a wiring structure for pressure-bearing equipment.

[0020] Figure 5 The present invention is a bottom view of a terminal connection plate of a wiring structure for pressure-bearing equipment of the present invention.

[0021] Figure 6 It is a front schematic diagram of a terminal connection plate of a wiring structure for pressure-bearing equipment of the present invention.

[0022] Figure 7 It is a schematic back view of the terminal connection plate of the wiring structure for pressure-bearing equipment of the present invention.

[0023] Figure 8 It is a structural schematic diagram of the terminal posts of the wiring structure for pressure-bearing equipment of the present invention. DETAILED DESCRIPTION

[0024] The present invention will be further described below in conjunction with the accompanying drawings.

[0025] Example

[0026] refer to Figure 1 , Figure 2 A wiring structure for pressure-bearing equipment, comprising a pressure-bearing equipment housing 1, a protective cover 2, a terminal 3, a power line 4, a cover plate 5 and a terminal connection plate 6. The pressure-bearing equipment is a scroll compressor 10. The pressure-bearing equipment housing 1 is a scroll compressor housing, in which a motor 11 is arranged, and a terminal opening is provided. The protective cover 2 is a housing structure having a protective cover opening at the top and a terminal through-hole 21 at the bottom. The cover plate 5 is sealed on the protective cover opening of the protective cover 2 and connected with the protective cover 2 to form a protective box having a wiring cavity 20 therein; the protective cover 2 is welded to the outer wall of the pressure-bearing equipment housing 1 by a full-circle projection welding method from the bottom, and its terminal through-hole 21 is directly opposite to the terminal opening of the pressure-bearing equipment housing 1.

[0027] Terminal 3 and power line 4 are both three-phase structures, refer to Figure 8The terminal 3 includes a terminal seat 30, and an external connector 31 and an internal connector 32 arranged at both ends of the terminal seat 30. The end of the external connector 31 has an external connector through-hole 310, and the end of the internal connector 32 has an internal connector through-hole 320. The terminal 3 is fixedly mounted on the terminal opening of the pressure-bearing equipment housing 1 by welding the terminal seat 30. The external connector 31 of the terminal 3 penetrates into the wiring cavity 20 of the protection box, and the internal connector 32 is arranged in the pressure-bearing equipment housing 1. The internal connector 32 of the terminal 3 is connected to the lead-out wire 12 of the motor 11. The end of the power cord 4 has a power cord connector 41 and a power cord connector through-hole. The power cord connector 41 of the power cord 4 penetrates into the wiring cavity 20 of the protection box and is connected to the external connector 31 of the terminal 3.

[0028] refer to Figure 3 to Figure 4 The terminal connection plate 6 is arranged in the protective cover 2, and the power line connector 41 of the power line 4 is connected to the external connector 31 of the terminal post 3 through the terminal connection plate 6; the back of the terminal connection plate 6 is close to the bottom of the protective cover 2, and the terminal connection position thereon is arranged in a one-to-one correspondence with the external connector 31 of the terminal post 3 and the power line connector 41 of the power line 4; the external connector 31 of the terminal post 3 passes through the end plate through hole 62 of the terminal connection plate 6, and has an external connector bending section 311 bent in the end plate groove 61, so that the wiring The external connector through-hole 310 of the column 3 is directly opposite to the mounting hole 63 of the terminal connecting plate 6; the power cord connector 41 of the power cord 4 is inserted into the end plate groove 61 of the terminal connecting plate 6 from the groove end of the terminal connecting plate 6, and is placed on the external connector bending section 311 of the terminal post 3, and the power cord connector 41 of the power cord 4, the external connector 31 of the terminal post 3 and the terminal connecting plate 6 are fastened and connected through the terminal bolt 7, the power cord connector through-hole, the external connector through-hole 310 of the terminal post 3 and the mounting hole 63 of the terminal connecting plate 6.

[0029] refer to Figure 6 , Figure 7 The terminal connection plate 6 is a block-shaped structure, and has three terminal connection positions on its front. The three end plate grooves 61 of the three terminal connection positions are arranged close to each other in sequence. The end plate groove 61 located in the middle is partially staggered with the end plate grooves 61 on both sides thereof, that is, the inner end of the end plate groove 61 located in the middle is arranged close to the outer ends of the end plate grooves 61 on both sides thereof, and the three end plate through-holes 62 of the three terminal connection positions are evenly distributed in a triangle. Each terminal connection position includes an end plate groove 61, an end plate through-hole 62 and an installation hole 63; the end plate groove 61 is arranged horizontally along the front of the terminal connection plate 6, and extends from the middle of the terminal connection plate 6 to the edge of the terminal connection plate 6, and the edge of the terminal connection plate 6 has a groove port corresponding to the outer end of the end plate groove 61; the end plate through-hole 62 is arranged vertically near the inner end of the end plate groove 61, and is connected with the inner end of the end plate through-hole 62; the installation hole 63 is arranged vertically on the inner end of the end plate groove 61.

[0030] refer to Figure 4 , Figure 5 , each terminal connection position of the terminal connection plate 6 has an end through hole 64 with a narrowed aperture from the end of the mounting hole 63 to the back of the terminal connection plate 6, and a terminal nut 65 is provided in the mounting hole 63 of each terminal connection position, and the terminal bolt 7 is threadedly connected with the terminal nut 65 in the mounting hole 63. Each terminal connection position also has a horizontally arranged strip boss 66 on the inner side wall of the end plate groove 61. The back of each terminal connection position has a raised back boss 67, and the back boss 67 is arranged corresponding to the mounting hole 63 of the terminal connection plate 6, so that there is a drainage gap 68 between adjacent back bosses 67, and between the back of the terminal connection plate 6 and the outer wall of the pressure-bearing equipment housing 1.

[0031] This embodiment has high reliability and high safety during the use of the scroll compressor 10. The protective cover 2 is welded on the outer wall of the pressure-bearing equipment shell 1 in a whole circle, and the terminal connection plate 6 is wrapped as a whole in the wiring cavity 20, which meets the dust and electric shock protection requirements for the use of the compressor, and prevents the surface frost generated by the refrigeration of the compressor from entering the terminal 3, which not only ensures that the live parts of the compressor will not fail due to short circuit due to the influence of condensed water, but also ensures that the terminal will not rust due to condensed water, thereby improving the service life of the compressor.

Claims

1. A wiring structure for pressure-bearing equipment, comprising a pressure-bearing equipment housing (1), a protective cover (2), a wiring post (3), a power line (4) and a cover plate (5); The pressure-bearing equipment housing (1) has a terminal opening; the protective cover (2) is a housing structure having a protective cover opening at the top and a terminal through-hole (21) at the bottom; the cover plate (5) is sealed on the protective cover opening of the protective cover (2) and connected to the protective cover (2) to form a protective box having a terminal cavity (20) therein; the protective cover (2) is connected to the outer wall of the pressure-bearing equipment housing (1) at the bottom, and its terminal through-hole (21) faces the terminal opening of the pressure-bearing equipment housing (1); The terminal (3) comprises a terminal seat (30), and an external connector (31) and an internal connector (32) arranged at both ends of the terminal seat (30); the end of the external connector (31) has an external connector through-hole (310), and the end of the internal connector (32) has an internal connector through-hole (320); the terminal (3) is fixedly mounted on the terminal opening of the pressure-bearing equipment housing (1) by the terminal seat (30); the external connector (31) of the terminal (3) is inserted into the wiring cavity (20) of the protection box, and the internal connector (32) is arranged in the pressure-bearing equipment housing (1); The end of the power line (4) has a power line connector (41) and a power line connector through hole, and the power line connector (41) of the power line (4) is inserted into the wiring cavity (20) of the protection box and connected to the external connector (31) of the terminal (3); Features: It also includes a terminal connection plate (6), which is a block-shaped structure and has at least one terminal connection position on its front side, each terminal connection position including an end plate groove (61), an end plate through-hole (62) and a mounting hole (63); the end plate groove (61) is arranged horizontally along the front side of the terminal connection plate (6) and extends from near the middle of the terminal connection plate (6) to the edge of the terminal connection plate (6), and the edge of the terminal connection plate (6) has a groove end corresponding to the outer end of the end plate groove (61); the end plate through-hole (62) is vertically arranged near the inner end of the end plate groove (61) and is connected to the inner end of the end plate through-hole (62); the mounting hole (63) is vertically arranged on the inner end of the end plate groove (61); The terminal connection plate (6) is arranged in the protective cover (2), and the power line connector (41) of the power line (4) is connected to the external connector (31) of the terminal post (3) through the terminal connection plate (6); the back side of the terminal connection plate (6) is close to the bottom of the protective cover (2), and the terminal connection position thereon is arranged in a one-to-one correspondence with the external connector (31) of the terminal post (3) and the power line connector (41) of the power line (4); the external connector (31) of the terminal post (3) passes through the end plate through hole (62) of the terminal connection plate (6), and has an external connector bending section (311) bent in the end plate groove (61), so that the external connector through hole (310) of the terminal post (3) is directly opposite to the mounting hole (63) of the terminal connection plate (6); the power line connector (41) of the power line (4) is connected to the terminal connection plate (6) by the terminal connection plate (6). The slot end of the terminal connecting plate (6) is inserted into the end plate slot (61) of the terminal connecting plate (6) and is placed on the external joint bending section (311) of the terminal post (3); the power line connector (41) of the power line (4), the external joint (31) of the terminal post (3) and the terminal connecting plate (6) are fastened and connected through the terminal bolt (7), the power line connector through hole, the external joint through hole (310) of the terminal post (3) and the mounting hole (63) of the terminal connecting plate (6); the end of the mounting hole (63) on each terminal connecting position of the terminal connecting plate (6) to the back side of the terminal connecting plate (6) also has an end through hole (64) with a narrowed aperture, and a terminal nut (65) is provided in the mounting hole (63) of each terminal connecting position, and the terminal bolt (7) is threadedly connected to the terminal nut (65) in the mounting hole (63); Each terminal connection position of the terminal connection plate (6) is also provided with a strip-shaped boss (66) disposed laterally on the inner side wall of the end plate groove (61).

2. The wiring structure for pressure-bearing equipment according to claim 1, characterized in that: The back side of each terminal connection position of the terminal connection plate (6) has a raised back convex column (67), and the back convex column (67) is arranged corresponding to the mounting hole (63) of the terminal connection plate (6), so that there is a drainage gap (68) between adjacent back convex columns (67) and between the back side of the terminal connection plate (6) and the outer wall of the pressure-bearing equipment housing (1).

3. The wiring structure for pressure-bearing equipment according to claim 1 or 2, characterized in that: The terminal connection plate (6) has three terminal connection positions, and the three end plate grooves (61) of the three terminal connection positions are arranged close to each other in sequence. The end plate groove (61) located in the middle is partially staggered with the end plate grooves (61) on both sides thereof, that is, the inner end of the end plate groove (61) located in the middle is arranged close to the outer ends of the end plate grooves (61) on both sides thereof, and the three end plate through holes (62) of the three terminal connection positions are evenly distributed in a triangular shape.

4. The wiring structure for pressure-bearing equipment according to claim 3, characterized in that: The pressure-bearing equipment is a scroll compressor (10), the pressure-bearing equipment housing (1) is a scroll compressor housing, a motor (11) is arranged therein, the terminal (3) and the power line (4) are both three-phase structures, and the inner connector (32) of the terminal (3) is connected to the lead-out line (12) of the motor (11).

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