Protective low-voltage fixed power distribution cabinet and protection method thereof
By designing auxiliary mechanisms, including U-shaped frames, placement grooves, auxiliary plates, limit holes, rectangular columns and support blocks, the expansion capability of protective low-voltage fixed distribution cabinets is achieved, and the lack of flexibility of existing distribution cabinets is solved. The problem of improvements in the effectiveness and efficiency of use.
Patent Information
- Application Number
- CN202411331189.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-24
- Publication Date
- 2024-12-20
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
Due to structural limitations, the existing protective low-voltage fixed distribution cabinets have poor flexibility and limited expansion capabilities, which leads to the inability to meet new needs when load increases or system upgrades, resulting in the replacement of distribution cabinets and increasing costs.
A protective low-voltage fixed power distribution cabinet including an auxiliary mechanism is designed, which consists of a U-shaped frame, a placement groove, an auxiliary plate, a limiting hole, a rectangular column and a support block. Through the cooperation of these components, power distribution is realized. The expansion of cabinets and the increase of components meet new needs.
It improves the use effect and efficiency of protective low-voltage fixed distribution cabinets, can be expanded when load increases or system upgrades, meets new needs, and reduces the cost of replacing distribution cabinets.
Smart Images
Figure CN119171234A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of low-voltage fixed power distribution cabinets, and in particular to a protective low-voltage fixed power distribution cabinet and a protection method thereof. Background Art
[0002] A low-voltage fixed distribution cabinet is an electrical device used in a low-voltage distribution system. It is mainly used to receive and distribute electrical energy, that is, to distribute the electrical energy of the upper-level power supply to provide appropriate power supply for different electrical equipment or loads. It can also protect, control and monitor the circuit to ensure the safe and stable operation of the power system. It is generally used in industrial fields, commercial buildings, residential areas and public facilities.
[0003] In the existing technology, the existing protective low-voltage fixed distribution cabinet can be used to receive and distribute electrical energy, and can also protect, control and monitor circuits during actual use, but its flexibility is poor, that is, the existing low-voltage fixed distribution cabinet has limited expansion capacity due to structural limitations. When the load increases or the system is upgraded, the low-voltage fixed distribution cabinet that cannot be expanded will not be able to meet the new needs, that is, the entire distribution cabinet needs to be replaced, which increases the cost expenditure, which not only reduces the use effect of the protective low-voltage fixed distribution cabinet, but also reduces the use efficiency of the protective low-voltage fixed distribution cabinet.
[0004] Therefore, we propose a protective low-voltage fixed distribution cabinet and a protection method thereof in order to solve the above-mentioned problems. Summary of the invention
[0005] The object of the present invention is to provide a protective low-voltage fixed power distribution cabinet and a protection method thereof, so as to solve the problem that the existing protective low-voltage fixed power distribution cabinet proposed in the above background technology has poor flexibility, that is, the existing low-voltage fixed power distribution cabinet has limited expansion capacity due to structural limitations. When the load increases or the system is upgraded, the low-voltage fixed power distribution cabinet that cannot be expanded will not be able to meet the new needs, that is, the entire power distribution cabinet needs to be replaced, which increases the cost expenditure, reduces the use effect of the protective low-voltage fixed power distribution cabinet, and also reduces the use efficiency of the protective low-voltage fixed power distribution cabinet.
[0006] To achieve the above object, the present invention provides the following technical solution: a protective low-voltage fixed power distribution cabinet, comprising a power distribution cabinet body, on which an auxiliary mechanism is provided; The auxiliary mechanism includes two U-shaped frames, two placement slots, four auxiliary plates, two limit holes, a rectangular column and two support blocks. A first protective plate is fixed inside the two U-shaped frames, and a second protective plate is installed inside each of the placement slots. Two first hand-tightened bolts are threaded through the top of each U-shaped frame, and two symmetrical threaded grooves are provided on the top of each auxiliary plate. Four rectangular grooves are provided on one side of the rectangular column, and two round rods are fixed inside each of the rectangular grooves. Two second hand-tightened bolts are threaded through the top and bottom of the rectangular column, and a rotating block is rotatably connected to the outer surface of each round rod. The eight rotating blocks are divided into a group of four vertically, and threaded holes are provided on the surfaces of two of the rotating blocks in each group, and a porous plate is fixed between the same surfaces of the rotating blocks in each group.
[0007] Preferably, the four auxiliary plates are divided into two groups, the bottom of each U-shaped frame is respectively in contact with the top of each group of auxiliary plates, the eight threaded grooves are divided into four groups, and the threaded end of each of the first hand-tightened bolts is respectively threadedly connected to the inside of one of the thread grooves in each group.
[0008] Preferably, the two U-shaped frames are movably sleeved inside the two limiting holes respectively, and the two first protective plates are movably sleeved inside the two limiting holes respectively, and the opposite sides of the two rotating blocks in each lateral direction are not in contact.
[0009] Preferably, the four second hand-tightening bolts are grouped in two in each horizontal direction, the threaded ends of the two groups of the second hand-tightening bolts respectively extend into the interior of two of the rectangular grooves, and the threaded end of each second hand-tightening bolt is respectively adapted to each threaded hole.
[0010] Preferably, the power distribution cabinet body includes a cabinet frame, the bottoms of the two support blocks are in the same horizontal plane as the bottom of the cabinet frame, side panels are installed on both sides of the cabinet frame, and rectangular plates are fixed to the top and bottom of the cabinet frame, and one of the rectangular plates has four corners on the top fixed with hanging rings.
[0011] Preferably, the front surface of the cabinet frame is rotatably connected to a cabinet door via a hinge, an ammeter and a voltmeter are installed inside each square hole on the front surface of the cabinet door, an indicator light is installed inside each round hole on the front surface of the cabinet door, a manual lock is installed at the lock hole on the front surface of the cabinet door, and a back panel is fixed on the rear surface of the cabinet frame.
[0012] Preferably, a plurality of cylindrical holes are provided at the bottom of the other rectangular plate, one end of the two U-shaped frames close to one of the side plates is fixed to the inner wall of one of the side plates, the same side of the two first protective plates is fixed to the surface of one of the side plates, the two placement grooves are provided on the surface of the back plate, and the four auxiliary plates are fixed on the cabinet frame.
[0013] Preferably, the two limiting holes are both opened on the outer wall of the cabinet frame, the rectangular column is fixed to the inner wall of one of the side panels, the tops of the two support blocks are fixed to the bottom of one of the side panels, four groups of rectangular rings are fixed inside the cabinet frame, and the number of rectangular rings in each group is two, and a mounting plate is installed between the insides of each group of rectangular rings.
[0014] Preferably, the four mounting plates are respectively installed with a control module, a main switch, multiple fuses, multiple relays, two molded case circuit breakers, multiple miniature circuit breakers, multiple AC contactors and multiple small circuit breakers, and a ground bar is installed on the inner wall of another side plate near the bottom, and one end of the ground bar movably passes through the inner wall of the other side plate.
[0015] A protection method for a protective low-voltage fixed power distribution cabinet comprises the following steps: S1. When it is necessary to use a protective low-voltage fixed distribution cabinet, first connect the control module, the main switch, multiple fuses, multiple relays, two molded case circuit breakers, multiple miniature circuit breakers, multiple AC contactors, multiple small circuit breakers, multiple current and voltage meters and multiple indicator lights with cables according to the electrical schematic diagram of the low-voltage fixed distribution box and the basic safety specifications, and then use one of the cylindrical holes to connect the external cable to the main switch, and then use the ground bar to connect the protective low-voltage fixed distribution cabinet to the ground; S2. When the protective low-voltage fixed power distribution cabinet needs to add multiple components inside due to load increase or system upgrade, the U-shaped frame, auxiliary plate and limit hole are used to make one of the side plates drive the corresponding two first protective plates to move horizontally, and then the first hand-tightened bolts, each group of another threaded groove, cabinet frame and auxiliary plate are used to fix the moved U-shaped frame; S3. Then, the gap between the two U-shaped frames is blocked by the cooperation of the two second protective plates, and then the porous plate is rotated by the cooperation of the rectangular column, the round rod and the rotating block. Then, the rotated porous plate is fixed by the cooperation of the rectangular column, the second hand-tightening bolts, the round rod, the rotating block and the threaded hole.
[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention can allow the protective low-voltage fixed power distribution cabinet to have extended functions by setting up auxiliary mechanisms, that is, when the load increases or the system is upgraded, the protective low-voltage fixed power distribution cabinet can also meet new needs, which not only improves the use effect of the protective low-voltage fixed power distribution cabinet, but also improves the use efficiency of the protective low-voltage fixed power distribution cabinet. When the protective low-voltage fixed power distribution cabinet needs to add multiple components inside the protective low-voltage fixed power distribution cabinet due to increased load or system upgrade, at this time, the U-shaped frame, the auxiliary plate and the limit hole are first used to cooperate to achieve one of the side panels driving the corresponding two first protective plates to move horizontally.
[0017] 2. The present invention then utilizes the cooperation of the first hand-tightened bolts, each group of another threaded groove, the cabinet frame and the auxiliary plate to fix the moved U-shaped frame, and then utilizes the cooperation of the two second protective plates to complete the expansion operation of the protective low-voltage fixed distribution cabinet, and then utilizes the cooperation of the rectangular column, the round rod and the rotating block to rotate the porous plate, and then utilizes the cooperation of the rectangular column, the second hand-tightened bolts, the round rod, the rotating block and the threaded hole to fix the rotated porous plate, that is, the expanded protective low-voltage fixed distribution cabinet can meet new needs.
[0018] 3. The present invention can be used to receive and distribute electric energy by setting up a distribution cabinet body, and can also protect, control and monitor the circuit. When a protective low-voltage fixed distribution cabinet is needed, the control module, the main switch, multiple fuses, multiple relays, two molded case circuit breakers, multiple miniature circuit breakers, multiple AC contactors, multiple small circuit breakers, multiple current and voltage meters and multiple indicator lights can be connected together with cables according to the electrical schematic diagram of the low-voltage fixed distribution box and the basic safety specifications. Then, by using one of the cylindrical holes, the external cable can be connected to the main switch.
[0019] 4. The present invention then utilizes the cooperation of the ground bar to conduct the fault current and static electricity generated during the use of the protective low-voltage fixed power distribution cabinet into the ground, thereby preventing electric shock accidents and electrical fires, that is, protecting the internal components of the low-voltage fixed power distribution cabinet. When the entire protective low-voltage fixed power distribution cabinet needs to be moved, the entire protective low-voltage fixed power distribution cabinet can be moved by directly utilizing the prepared crane and four lifting rings. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 A three-dimensional diagram of a protective low-voltage fixed power distribution cabinet of the present invention; Figure 2 It is a three-dimensional diagram of the expanded part of a protective low-voltage fixed power distribution cabinet of the present invention; Figure 3A bottom-up perspective view of a protective low-voltage fixed power distribution cabinet according to the present invention; Figure 4 A three-dimensional diagram of a power distribution cabinet body of a protective low-voltage fixed power distribution cabinet of the present invention; Figure 5 It is a partial three-dimensional view of another angle of the expanded protective low-voltage fixed power distribution cabinet of the present invention; Figure 6 It is a partial stereoscopic diagram of a protective low-voltage fixed power distribution cabinet of the present invention, viewed from the side at an expanded rear angle; Figure 7 It is a partial three-dimensional diagram of a protective low-voltage fixed power distribution cabinet according to the present invention from a top view; Figure 8 It is a three-dimensional diagram of another part of the power distribution cabinet body of a protective low-voltage fixed power distribution cabinet of the present invention; Fig. 9 It is a partial stereoscopic view from a side angle of a protective low-voltage fixed power distribution cabinet of the present invention; Fig.10 A protective low-voltage fixed power distribution cabinet according to the present invention Figure 7 The enlarged stereogram at A in the middle; Fig.11 It is a partial three-dimensional view from another angle of a protective low-voltage fixed power distribution cabinet of the present invention; Fig.12 It is a partially cutaway stereoscopic view of an auxiliary mechanism of a protective low-voltage fixed power distribution cabinet of the present invention; Fig.13 A protective low-voltage fixed power distribution cabinet according to the present invention Fig. 9 Enlarged stereogram of point B in the middle.
[0021] In the figure: 1. Distribution cabinet body; 101. Cabinet frame; 102. Side panel; 103. Rectangular plate; 104. Lifting ring; 105. Cabinet door; 106. Ammeter and voltmeter; 107. Indicator light; 108. Manual lock; 109. Back panel; 110. Cylindrical hole; 111. Rectangular ring; 112. Mounting plate; 113. Control module; 114. Main switch; 115. Fuse; 116. Relay; 117. Molded case circuit breaker; 118. Miniature circuit breaker; 119. AC contact Device; 120, ground bar; 121, small circuit breaker; 2, auxiliary mechanism; 201, U-shaped frame; 202, first protective plate; 203, placement groove; 204, second protective plate; 205, auxiliary plate; 206, first hand-tightening bolt; 207, threaded groove; 208, limiting hole; 209, rectangular column; 210, rectangular groove; 211, round rod; 212, second hand-tightening bolt; 213, rotating block; 214, threaded hole; 215, porous plate; 216, supporting block. DETAILED DESCRIPTION
[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0023] Example 1: Please refer to Figure 1-Figure 7 and Figure 9-13 As shown, the present invention provides a technical solution: a protective low-voltage fixed power distribution cabinet, comprising a power distribution cabinet body 1, on which an auxiliary mechanism 2 is arranged; The auxiliary mechanism 2 includes two U-shaped frames 201, two placement slots 203, four auxiliary plates 205, two limiting holes 208, a rectangular column 209 and two support blocks 216. The first protective plate 202 is fixed inside the two U-shaped frames 201, and the second protective plate 204 is installed inside each placement slot 203. The top of each U-shaped frame 201 is threaded with two first hand-tightened bolts 206. The top of each auxiliary plate 205 is provided with two symmetrical threaded grooves 207. Four rectangular grooves 210 are provided on one side of the rectangular column 209, and two round grooves 210 are fixed inside each rectangular groove 210. The top of the rectangular column 209 and the bottom of the rectangular column 209 are threaded with two second hand-tightening bolts 212, and the outer surface of each round rod 211 is rotatably connected with a rotating block 213. The eight rotating blocks 213 are divided into a group of four vertically, and the surfaces of two rotating blocks 213 in each group are provided with threaded holes 214. A porous plate 215 is fixed between the same surface of each group of rotating blocks 213. The four auxiliary plates 205 are divided into two groups, and the bottom of each U-shaped frame 201 is respectively in contact with the top of each group of auxiliary plates 205. The eight threaded grooves 207 are divided into four groups, and the threaded end of each first hand-tightening bolt 206 is divided into The two U-shaped frames 201 are respectively movably connected to the inside of the two limiting holes 208, and the two first protective plates 202 are respectively movably connected to the inside of the two limiting holes 208. The opposite sides of the two rotating blocks 213 in each horizontal direction do not contact each other. The four second hand-tightening bolts 212 are each a group of two in each horizontal direction. The threaded ends of the two groups of second hand-tightening bolts 212 extend to the inside of two rectangular grooves 210, and the threaded ends of each second hand-tightening bolt 212 are respectively matched with each threaded hole 214. The power distribution cabinet body 1 includes a cabinet frame 101, two support blocks 21 The bottoms of the two U-shaped frames 201 are in the same horizontal plane as the bottom of the cabinet frame 101, one end of the two U-shaped frames 201 close to one of the side panels 102 is fixed to the inner wall of one of the side panels 102, the same side of the two first protective plates 202 is fixed to the surface of one of the side panels 102, the two placement grooves 203 are opened on the surface of the back panel 109, the four auxiliary plates 205 are fixed on the cabinet frame 101, the limiting holes 208 are opened on the outer wall of the cabinet frame 101, the rectangular column 209 is fixed to the inner wall of one of the side panels 102, and the tops of the two support blocks 216 are fixed to the bottom of one of the side panels 102.
[0024] In this embodiment, when the protective low-voltage fixed power distribution cabinet needs to add multiple components inside due to increased load or system upgrade, the staff must first put on insulating clothing, then stop using the protective low-voltage fixed power distribution cabinet, and then use tools to remove the screws connecting one of the rectangular plates 103 and the cabinet frame 101, then open the cabinet door 105, and then remove all the first hand-tightened bolts 206, and then move one of the rectangular plates 103. At this time, one of the moved rectangular plates 103 will drive the two U-shaped frames 201 and the two first protective plates 202 connected thereto to move respectively inside the corresponding limit holes 208. At the same time, one of the moved rectangular plates 103 will also drive the two support blocks 216 connected thereto to move. When the two U-shaped frames 201 are moved to a point where they cannot move, each of the removed first hand-tightened bolts 206, each group of another threaded grooves 207 and the pair of With the cooperation of the corresponding auxiliary plate 205, the two U-shaped frames 201 are fixed, and then the two second protective plates 204 are taken out from the inside of the two placement grooves 203 respectively, and then the two second protective plates 204 are installed between the two U-shaped frames 201, and then the four second hand-tightening bolts 212 are removed from the rectangular column 209, and then the cooperation of multiple round rods 211, rectangular columns 209 and multiple rotating blocks 213 is used to allow the two porous plates 215 to rotate towards each other. When the two porous plates 215 are rotated to the point where they cannot rotate, the two rotated porous plates 215 can be fixed directly by using the cooperation of the removed second hand-tightening bolts 212, threaded holes 214, round rods 211 and rotating blocks 213. At this time, the added components can be installed on the two porous plates 215, that is, the expansion of the protective low-voltage fixed power distribution cabinet is realized by using the cooperation of the auxiliary mechanism 2, thereby improving the flexibility of the protective low-voltage fixed power distribution cabinet.
[0025] Embodiment 2: According to Figure 1-Figure 4 , Figure 6-Figure 11 and Fig.13As shown, the power distribution cabinet body 1 includes a cabinet frame 101, side panels 102 are installed on both sides of the cabinet frame 101, rectangular panels 103 are fixed to the top of the cabinet frame 101 and the bottom of the cabinet frame 101, and four corners of the top of one of the rectangular panels 103 are fixed with hanging rings 104, and the front surface of the cabinet frame 101 is rotatably connected to a cabinet door 105 through a hinge, and an ammeter and voltmeter 106 is installed inside each square hole on the front surface of the cabinet door 105, and an indicator light 107 is installed inside each round hole on the front surface of the cabinet door 105. A manual lock 108 is installed at the lock hole on the front surface of the cabinet door 105, and a back panel 109 is fixed to the rear surface of the cabinet frame 101. The other rectangular panel 103 is fixed to the rear surface of the cabinet frame 101. A plurality of cylindrical holes 110 are provided at the bottom, and four groups of rectangular rings 111 are fixed inside the cabinet frame 101, and each group of rectangular rings 111 has two members, and a mounting plate 112 is installed between the insides of each group of rectangular rings 111. The four mounting plates 112 are respectively installed with a control module 113, a main switch 114, a plurality of fuses 115, a plurality of relays 116, two molded case circuit breakers 117, a plurality of miniature circuit breakers 118, a plurality of AC contactors 119 and a plurality of small circuit breakers 121. A ground bar 120 is installed on the inner wall of the other side panel 102 near the bottom, and one end of the ground bar 120 movably passes through the inner wall of the other side panel 102.
[0026] In this embodiment, when it is necessary to use a protective low-voltage fixed distribution cabinet, the control module 113, the main switch 114, multiple fuses 115, multiple relays 116, two molded case circuit breakers 117, multiple miniature circuit breakers 118, multiple AC contactors 119, multiple small circuit breakers 121, multiple current and voltage meters 106 and multiple indicator lights 107 are connected together with cables according to the electrical schematic diagram of the low-voltage fixed distribution box and basic safety specifications, and then the external cable is connected to the main switch 114 through the cooperation of one of the cylindrical holes 110, and then one end of the ground bar 120 is connected to the ground bar 120. Connected to the earth, when everything is ready, directly connect the equipment that needs power supply to the protective low-voltage fixed distribution cabinet and it can be used. When it is necessary to inspect and repair the components inside the protective low-voltage fixed distribution cabinet, directly use the manual lock 108 to open the cabinet door 105, and then use tools to inspect and repair the components that need to be inspected. When it is necessary to move the entire protective low-voltage fixed distribution cabinet, directly use the prepared crane and four lifting rings 104 to move the entire protective low-voltage fixed distribution cabinet to the location where it needs to be placed.
[0027] The effect and working principle of the whole mechanism are as follows: when it is necessary to use a protective low-voltage fixed distribution cabinet, firstly, according to the electrical schematic diagram of the low-voltage fixed distribution box and basic safety specifications, the control module 113, the main switch 114, multiple fuses 115, multiple relays 116, two molded case circuit breakers 117, multiple miniature circuit breakers 118, multiple AC contactors 119, multiple small circuit breakers 121, multiple current and voltage meters 106 and multiple indicator lights 107 are connected together with cables, and then, through the cooperation of one of the cylindrical holes 110, the external cable is connected to the main switch 114, and then one end of the ground bar 120 is connected to the earth. When everything is ready, the equipment that needs to be powered is directly connected to the protective The protective low-voltage fixed power distribution cabinets can be connected together and can be used. When it is necessary to inspect and repair the components inside the protective low-voltage fixed power distribution cabinet, the manual lock 108 is directly used to open the cabinet door 105, and then the tools can be used to inspect and repair the components that need to be inspected. When it is necessary to move the entire protective low-voltage fixed power distribution cabinet, the prepared crane and four lifting rings 104 are directly used to drive the entire protective low-voltage fixed power distribution cabinet to move to the location where it needs to be placed. When the protective low-voltage fixed power distribution cabinet needs to add multiple components inside the protective low-voltage fixed power distribution cabinet due to increased load or system upgrades, the staff must first put on insulating clothing and then stop the protective low-voltage fixed distribution cabinet. The electric cabinet is used, and then the screws connecting one of the rectangular plates 103 and the cabinet frame 101 are removed by using a tool, and then the cabinet door 105 is opened, and then all the first hand-tightening bolts 206 are removed, and then one of the rectangular plates 103 is moved. At this time, the moved one of the rectangular plates 103 will drive the two U-shaped frames 201 and the two first protective plates 202 connected thereto to move inside the corresponding limiting holes 208 respectively, and at the same time, the moved one of the rectangular plates 103 will also drive the two supporting blocks 216 connected thereto to move. When the two U-shaped frames 201 are moved to a point where they cannot move, the two U-shaped frames 201 are directly connected by using the cooperation of each removed first hand-tightening bolt 206, each group of another threaded groove 207 and the corresponding auxiliary plate 205. The U-shaped frame 201 is fixed, and then the two second protective plates 204 are taken out from the inside of the two placement grooves 203 respectively, and then the two second protective plates 204 are installed between the two U-shaped frames 201, and then the four second hand-tightening bolts 212 are removed from the rectangular column 209, and then the cooperation of multiple round rods 211, rectangular column 209 and multiple rotating blocks 213 is used to make the two porous plates 215 rotate towards each other. When the two porous plates 215 are rotated to the point where they cannot rotate, the two rotated porous plates 215 can be fixed directly by using the cooperation of the removed second hand-tightening bolts 212, threaded holes 214, round rods 211 and rotating blocks 213, and then the added components can be installed on the two porous plates 215.That is, by using the cooperation of the auxiliary mechanism 2, the expansion of the protective low-voltage fixed power distribution cabinet is realized, thereby improving the flexibility of the protective low-voltage fixed power distribution cabinet.
[0028] The U-shaped frame 201 is provided with a mounting groove in advance, and the mounting groove is adapted to the screw thread end that fixes the second protection plate 204 to the corresponding placement groove 203; One of the cylindrical holes 110 is used for external cables to enter the power distribution cabinet and for internal cables to leave the power distribution cabinet, and the remaining cylindrical holes 110 are used to discharge the heat generated by the internal electrical components of the power distribution cabinet when they are working; The width of the second protective plate 204 is the same as the distance between one of the side plates 102 and the cabinet frame 101 after the movement, and the length of the second protective plate 204 is the same as the distance between the opposite sides of the two U-shaped frames 201; Among them, four mounting plates 112 are as follows Figure 4 As shown, from top to bottom are the first mounting plate 112, the second mounting plate 112, the third mounting plate 112 and the fourth mounting plate 112, the control module 113 is mounted on the first mounting plate 112, the main switch 114, multiple fuses 115 and multiple relays 116 are all mounted on the second mounting plate 112, two molded case circuit breakers 117 are all mounted on the third mounting plate 112, and multiple miniature circuit breakers 118, multiple AC contactors 119 and multiple small circuit breakers 121 are all mounted on the fourth mounting plate 112.
[0029] Among them, the main switch 114 is the main power control switch of the entire power distribution cabinet. It is in a closed state under normal circumstances to provide power for subsequent circuits. When a serious overload, short circuit or other fault occurs, the main switch 114 will automatically trip and cut off the power supply to protect the entire power distribution cabinet and connected equipment.
[0030] Fuse 115: It plays a role of rapid overcurrent protection in the circuit. When the current exceeds the rated current of fuse 115, the fuse in fuse 115 will melt quickly, cutting off the circuit and preventing the fault from further expanding.
[0031] Relay 116: controls the on and off of the circuit according to the input control signal, such as voltage, current, temperature, etc.
[0032] AC contactor 119: It is mainly used to frequently connect and disconnect high-power loads. It realizes the closing and opening of the contactor's main contacts by controlling the power on and off of the coil.
[0033] Miniature circuit breakers 118 and small circuit breakers 121 are used to protect each branch circuit. When a branch circuit is overloaded, short-circuited or other fault occurs, the circuit breaker will automatically trip and cut off the power supply of the branch circuit to prevent the fault from affecting other circuits and equipment.
[0034] Molded case circuit breaker 117: Suitable for the protection of large power loads or important equipment. It has high short-circuit breaking capacity and overload protection capacity, and can quickly cut off the circuit when a fault occurs to protect the safety of equipment and personnel.
[0035] Ground bar 120: used to connect the cabinet of the power distribution cabinet to the ground to ensure the safe grounding of the entire system. Ground bar 120 can conduct fault current and static electricity to the ground to prevent electric shock accidents and electrical fires.
[0036] Indicator light 107: used to remind the staff whether the components in the power distribution cabinet are faulty.
[0037] Current and voltage meter 106: It can intuitively display the current and voltage of the circuit in the distribution cabinet.
[0038] Cooperation between the control module 113 and the relay 116 : The control module 113 can send a control signal to the relay 116 to control the action of the relay 116 .
[0039] Cooperation between the control module 113 and the molded case circuit breaker 117: The control module 113 can monitor the status and parameters of the molded case circuit breaker 117, such as current, voltage, fault status, etc.
[0040] Among them, the current and voltage meter 106, the indicator light 107, the manual lock 108, the control module 113, the main switch 114, the fuse 115, the relay 116, the molded case circuit breaker 117, the miniature circuit breaker 118, the AC contactor 119, the ground bar 120 and the small circuit breaker 121 are all prior arts, and their working principles are all public arts. Their models can be selected according to actual conditions, and no further explanation is given here.
[0041] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A protective low-voltage fixed power distribution cabinet, comprising a power distribution cabinet body (1), Features: The power distribution cabinet body (1) is provided with an auxiliary mechanism (2); The auxiliary mechanism (2) comprises two U-shaped frames (201), two placement slots (203), four auxiliary plates (205), two limiting holes (208), a rectangular column (209) and two support blocks (216); a first protective plate (202) is fixed inside the two U-shaped frames (201); a second protective plate (204) is installed inside each placement slot (203); two first hand-tightened bolts (206) are threadedly penetrated at the top of each U-shaped frame (201); two symmetrical threaded grooves (207) are provided at the top of each auxiliary plate (205); Four rectangular grooves (210) are provided on one side of the column (209), two round rods (211) are fixed inside each of the rectangular grooves (210), two second hand-tightened bolts (212) are threadedly penetrated through the top and bottom of the rectangular column (209), a rotating block (213) is rotatably connected to the outer surface of each round rod (211), eight rotating blocks (213) are divided into a group of four vertically, threaded holes (214) are provided on the surfaces of two rotating blocks (213) in each group, and a porous plate (215) is fixed between the same surfaces of the rotating blocks (213) in each group.
2. The protective low-voltage fixed distribution cabinet according to claim 1, Features: The four auxiliary plates (205) are divided into two groups, the bottom of each U-shaped frame (201) is in contact with the top of each group of auxiliary plates (205), the eight threaded grooves (207) are divided into four groups, and the threaded end of each first hand-tightening bolt (206) is threadedly connected to the inside of one of the threaded grooves (207) in each group.
3. The protective low-voltage fixed distribution cabinet according to claim 2, Features: The two U-shaped frames (201) are movably sleeved inside the two limiting holes (208), and the two first protective plates (202) are movably sleeved inside the two limiting holes (208), respectively, and opposite sides of the two rotating blocks (213) in each lateral direction are not in contact.
4. The protective low-voltage fixed distribution cabinet according to claim 3, Features: The four second hand-tightening bolts (212) are arranged in a group of two in each horizontal direction, and the threaded ends of the two groups of the second hand-tightening bolts (212) respectively extend into the interior of two of the rectangular grooves (210), and the threaded end of each second hand-tightening bolt (212) is respectively matched with each threaded hole (214).
5. The protective low-voltage fixed distribution cabinet according to claim 4, Features: The power distribution cabinet body (1) comprises a cabinet frame (101), the bottoms of the two support blocks (216) are both in the same horizontal plane as the bottom of the cabinet frame (101), side panels (102) are installed on both sides of the cabinet frame (101), and rectangular plates (103) are fixed to the top of the cabinet frame (101) and the bottom of the cabinet frame (101), and the top four corners of one of the rectangular plates (103) are fixed with lifting rings (104).
6. The protective low-voltage fixed distribution cabinet according to claim 5, Features: The front surface of the cabinet frame (101) is rotatably connected to a cabinet door (105) via a hinge, each square hole on the front surface of the cabinet door (105) is internally installed with an ammeter (106), each round hole on the front surface of the cabinet door (105) is internally installed with an indicator light (107), a manual lock (108) is installed at the lock hole on the front surface of the cabinet door (105), and a back plate (109) is fixed to the rear surface of the cabinet frame (101).
7. The protective low-voltage fixed distribution cabinet according to claim 6, Features: A plurality of cylindrical holes (110) are provided at the bottom of the other rectangular plate (103); one end of the two U-shaped frames (201) close to one of the side plates (102) is fixed to the inner wall of one of the side plates (102); the same side of the two first protective plates (202) is fixed to the surface of one of the side plates (102); the two placement grooves (203) are provided on the surface of the back plate (109); and the four auxiliary plates (205) are fixed to the cabinet frame (101).
8. The protective low-voltage fixed distribution cabinet according to claim 7, Features: The two limiting holes (208) are both opened on the outer wall of the cabinet frame (101), the rectangular column (209) is fixed to the inner wall of one of the side panels (102), the tops of the two support blocks (216) are both fixed to the bottom of one of the side panels (102), four groups of rectangular rings (111) are fixed inside the cabinet frame (101), and the number of each group of rectangular rings (111) is two, and a mounting plate (112) is installed between the insides of each group of rectangular rings (111).
9. The protective low-voltage fixed distribution cabinet according to claim 8, Features: The four mounting plates (112) are respectively mounted with a control module (113), a main switch (114), a plurality of fuses (115), a plurality of relays (116), two molded case circuit breakers (117), a plurality of miniature circuit breakers (118), a plurality of AC contactors (119) and a plurality of small circuit breakers (121); a ground bar (120) is mounted on the inner wall of another side plate (102) near the bottom, and one end of the ground bar (120) movably passes through the inner wall of another side plate (102).
10. A protection method for a protective low-voltage fixed distribution cabinet. It is characterized in that The protective low-voltage fixed power distribution cabinet according to claim 9 is used, comprising the following steps: S1. When it is necessary to use a protective low-voltage fixed power distribution cabinet, first, according to the electrical schematic diagram of the low-voltage fixed power distribution box and the basic safety specifications, the control module (113), the main switch (114), a plurality of fuses (115), a plurality of relays (116), two molded case circuit breakers (117), a plurality of miniature circuit breakers (118), a plurality of AC contactors (119), a plurality of small circuit breakers (121), a plurality of current and voltage meters (106) and a plurality of indicator lights (107) are connected together with cables, and then, by using one of the cylindrical holes (110), an external cable is connected to the main switch (114), and then, by using the ground bar (120), the protective low-voltage fixed power distribution cabinet is connected to the ground; S2. When a plurality of components need to be added to the protective low-voltage fixed power distribution cabinet due to an increase in load or system upgrade, the U-shaped frame (201), the auxiliary plate (205) and the limit hole (208) are first used to cooperate with each other so that one of the side plates (102) drives the corresponding two first protective plates (202) to move horizontally, and then the first hand-tightened bolts (206), each group of other threaded grooves (207), the cabinet frame (101) and the auxiliary plate (205) are used to cooperate with each other to fix the moved U-shaped frame (201); S3, then using the cooperation of the two second protection plates (204) to plug the gap between the two U-shaped frames (201), and then using the cooperation of the rectangular column (209), the round rod (211) and the rotating block (213) to rotate the porous plate (215), and then using the cooperation of the rectangular column (209), the second hand-tightening bolt (212), the round rod (211), the rotating block (213) and the threaded hole (214) to fix the rotated porous plate (215).