High-low voltage power distribution cabinet convenient to overhaul

Abstract

The utility model discloses a high-low voltage power distribution cabinet convenient for maintenance, which belongs to the technical field of power distribution cabinets and comprises a power distribution cabinet body, the interior of the power distribution cabinet body is hollow and is provided with a partition plate fixedly connected with the power distribution cabinet body, the partition plate divides the internal space of the power distribution cabinet body into a power distribution cavity and a detection cavity, and a plurality of three-way switches are arranged in the power distribution cavity. Each three-way switch is provided with a wire extending to the detection cavity, the extending tail end of each wire is provided with a detection end, each three-way switch is further provided with two wiring ends, and the multiple three-way switches are jointly connected with an electric control element through the wires; according to the utility model, the detection ends for detecting the cable are uniformly arranged in the detection cavity, the three-way switch is used for controlling the cable for detection to be connected with the cable to be detected, whether the cable to be detected has the problems of short circuit, open circuit, poor contact and the like or not is detected through the detection ends according to a single-wire bridge method, and the cable detection efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of power distribution cabinets, in particular to a high and low voltage power distribution cabinet which is easy to maintain. Background Art

[0002] High and low voltage distribution cabinets are distribution equipment used for power distribution, control, metering and cable connection in power supply systems. Generally, power supply bureaus and substations use high voltage switch cabinets, which are then stepped down by transformers and led to low voltage distribution cabinets. The low voltage distribution cabinets are connected to the distribution boards, control boxes, and switch boxes of various power users. The equipment is a distribution device that meets the design functional requirements by assembling some switches, circuit breakers, fuses, buttons, indicator lights, instruments, wires and other protective devices into one. Existing distribution cabinets require regular maintenance by staff, but the current distribution cabinets generally have the problem of messy cables. Even if the cables inside the distribution cabinet are relatively neat after the initial installation, they will become messy and entangled after multiple maintenance, which causes the maintenance personnel to spend a lot of time to organize the cables and find the cable terminals. In addition, some cables are laid deep in the distribution cabinet, on the back, or blocked by the distribution equipment, which further increases the difficulty of maintenance for maintenance personnel, resulting in low maintenance efficiency of the distribution cabinet cables.

[0003] A Chinese patent with announcement number CN207269106U discloses a high and low voltage distribution cabinet, including a cabinet door, a bracket, a battery cell, a warning light, a first slide rail, an electric push rod and a second slide rail. The cabinet door is installed on the left end face of the distribution cabinet body, the bracket is installed inside the distribution cabinet body, the battery cell is installed on the left side of the front end face of the distribution cabinet body, the warning light is installed on the right side of the battery cell, the first slide rail is installed on the left end face of the bracket, the electric push rod is installed on the upper end face of the bracket, the electric push rod is connected to the bracket by expansion bolts, and the second slide rail is installed on the right end face of the bracket.

[0004] The above-mentioned high and low voltage distribution cabinet pushes the bracket through the electric push rod to move the bracket to the outside of the distribution cabinet, so as to inspect and repair the distribution equipment and cables on the bracket. However, the cables connected to some distribution equipment may be unable to move with the bracket to the outside of the distribution cabinet due to their shortness, and some cables in the distribution cabinet are laid deep inside or entangled and messy, resulting in mutual involvement between different distribution equipment, affecting the movement of the distribution equipment with the bracket to the outside of the distribution cabinet, and increasing the difficulty for maintenance personnel to repair the cables. Therefore, there is still room for improvement. Utility Model Content

[0005] In view of the technical defects existing in the background technology, the utility model proposes a high and low voltage distribution cabinet that is easy to maintain, which solves the above technical problems and meets the actual needs. The specific technical solution is as follows:

[0006] A high and low voltage power distribution cabinet which is easy to maintain, comprises a power distribution cabinet body, wherein the interior of the power distribution cabinet body is hollow and provided with a partition plate fixedly connected to the power distribution cabinet body, wherein the partition plate separates the internal space of the power distribution cabinet body into a power distribution cavity and a detection cavity, wherein a plurality of three-way switches are arranged in the power distribution cavity, wherein the three-way switches are provided with a wire extending to the detection cavity and a detection end is arranged at the end of the extended wire, wherein the three-way switch is further provided with two wiring terminals, and a plurality of the three-way switches are connected to an electric control element by wires.

[0007] As a further technical solution of the utility model, the detection cavity is provided with a fixed sleeve rod fixedly connected to the plurality of detection ends, the surface of the fixed sleeve rod is provided with a plurality of detection ports matching the detection ends, and the detection ports are provided with matching protective plugs.

[0008] As a further technical solution of the utility model, a tool drawer is provided at the bottom of the detection cavity, drawer rails are provided between the two sides of the tool drawer and the inner wall of the detection cavity, and the tool drawer slides along the extension direction of the drawer rails.

[0009] As a further technical solution of the utility model, a distribution cavity door is hingedly connected to one side outside the distribution cavity, the distribution cavity door is provided with an observation window, and a detection cavity door is hingedly connected to one side outside the detection cavity.

[0010] As a further technical solution of the utility model, a fan facing the distribution cavity is provided in the detection cavity, the partition plate is provided with a plurality of ventilation holes connecting the distribution cavity and the detection cavity, the surface of the distribution cabinet body is provided with an air inlet that passes through the detection cavity and an air outlet that passes through the distribution cavity, and the air inlet and the air outlet are both provided with shutters.

[0011] As a further technical solution of the utility model, a filter screen groove is provided on the inner side of the air inlet, and a matching moisture-proof filter screen is provided in the filter screen groove.

[0012] As a further technical solution of the utility model, a threaded hole penetrating to the inside of the filter mesh slot is provided outside the filter mesh slot, a matching fixing bolt is provided inside the threaded hole, and an end of the fixing bolt abuts against the surface of the moisture-proof filter mesh.

[0013] The beneficial effects of the utility model are:

[0014] The utility model uniformly sets the detection end for detecting cables in the detection cavity, controls the connection between the cable for detection and the cable to be detected through a three-way switch, and detects whether the cable to be detected has problems such as short circuit, open circuit, poor contact, etc. through the detection end according to the single-line bridge method. When performing maintenance, maintenance personnel do not need to spend a lot of time to tidy up the wiring terminals of the cables, and can complete the detection of the cables only through the detection end. It can also detect cables hidden in the back of the distribution cabinet, inside the wall, etc. when the distribution cabinet is installed. When detecting the hidden cables, there is no need to disassemble the distribution cabinet, thereby improving the efficiency of cable detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of a high and low voltage distribution cabinet that is easy to maintain.

[0016] Figure 2 It is a main view of a high and low voltage distribution cabinet that is easy to maintain.

[0017] Among them: distribution cabinet body 1, air inlet 11, filter slot 111, moisture-proof filter 112, fixing bolts 113, air outlet 12, shutter 13, partition plate 2, ventilation hole 21, distribution chamber 3, three-way switch 31, terminal 311, electric control element 32, distribution chamber door 33, observation window 331, detection chamber 4, detection terminal 41, fixing sleeve rod 42, protective plug 43, tool drawer 44, drawer track 45, detection chamber door 46, fan 47. DETAILED DESCRIPTION

[0018] The implementation methods of the present invention are described below in conjunction with the accompanying drawings and relevant embodiments. The implementation methods of the present invention are not limited to the following embodiments, and the present invention involves relevant necessary components in this technical field, which should be regarded as common knowledge in this technical field and can be known and mastered by technical personnel in this technical field.

[0019] like Figure 1 , 2 As shown, a high and low voltage distribution cabinet which is easy to maintain includes a distribution cabinet body 1. The distribution cabinet body 1 is hollow inside and is provided with a partition plate 2 fixedly connected to the distribution cabinet body 1. The partition plate 2 divides the internal space of the distribution cabinet body 1 into a distribution cavity 3 and a detection cavity 4. A plurality of three-way switches 31 are provided in the distribution cavity 3. The three-way switch 31 is provided with a wire extending to the detection cavity 4 and a detection end 41 is provided at the end of the extended wire. The three-way switch 31 is also provided with two wiring terminals 311. The plurality of three-way switches 31 are connected to an electric control element 32 by wires.

[0020] The power distribution cabinet body 1 of the utility model can be installed with switchgear, measuring instruments, protective electrical appliances, auxiliary equipment and other power distribution equipment to form a conventional high-voltage power distribution cabinet; the three-way switch 31 can connect three wires, one of which extends into the detection chamber 4 for detection, and the other three-way switch 31 can be connected to two wires through two wiring terminals 311, and these two wires are respectively used to connect the power distribution equipment in the power distribution cabinet and the current output terminal, and each wire connected to the wiring terminal 311 is used as a cable for transmitting electric energy in the power distribution cabinet. The three wires connected to the same three-way switch 31 are set as a wire group, wherein the wire with the detection end 41 is the detection cable, and the other two wires are the first cable and the second cable. The three-way switch 31 can realize three connection modes by changing the internal switch position: first, the first cable is connected to the second cable and the detection cable is disconnected, second, the first cable is connected to the detection cable and the second cable is disconnected, and third, the second cable is connected to the detection cable and the first cable is disconnected.

[0021] When the first cable is connected to the second cable, the power distribution cabinet transmits electric energy normally through the internal power distribution equipment; when the first cable is connected to the detection cable, the maintenance personnel can detect whether the first cable has problems such as short circuit, open circuit, poor contact, etc. through the conductor at the detection end 41. This detection method is based on the single-line bridge method and uses a bridge instrument for detection; when the second cable is connected to the detection cable, similarly, the maintenance personnel can detect whether the second cable has problems such as short circuit, open circuit, poor contact, etc. through the detection end 41; the electric control element 32 includes a servo system and a control circuit, and the control circuit is connected to the three-way switch 31. The maintenance personnel can send a control signal through the servo system to control the operation of the three-way switch 31, and the control signal is transmitted to the three-way switch 31 through the control circuit, thereby controlling the position of the internal switch of the three-way switch 31. When the maintenance personnel repair the power distribution cabinet, they can first uniformly control the position of the internal switch of the three-way switch 31 through the electric control element 32, and then uniformly adjust the position of the internal switch of the three-way switch 31 after completing the detection of the first cable or the second cable, and detect the other cable, thereby improving the efficiency of the maintenance personnel in detecting the cables.

[0022] The utility model uniformly sets the detection end 41 for detecting cables in the detection cavity 4, controls the connection between the cable for detection and the cable to be detected through the three-way switch 31, and detects whether the cable to be detected has problems such as short circuit, open circuit, poor contact, etc. through the detection end 41 according to the single-line bridge method. Even if there are problems such as messy cables, entangled cables, cables laid in deep places, and cables blocked by distribution equipment in the distribution cavity 3, because the cables have been neatly connected through the three-way switch when the distribution cabinet is installed, maintenance personnel do not need to spend a lot of time to arrange the cable terminals when performing maintenance, and can complete the cable detection through the detection end 41. It is also possible to detect cables hidden in the back of the distribution cabinet, inside the wall, etc. when the distribution cabinet is installed. There is no need to disassemble the distribution cabinet when detecting the hidden cables, thereby improving the efficiency of cable detection.

[0023] like Figure 1 , 2 As shown, as one of the preferred embodiments of the utility model, the detection cavity 4 is provided with a fixed sleeve rod 42 fixedly connected to a plurality of detection ends 41, a surface of the fixed sleeve rod 42 is provided with a plurality of detection ports matching the detection ends 41, and the detection ports are provided with matching protective plugs 43.

[0024] The fixed sleeve rod 42 of the utility model is used to uniformly and neatly fix the detection ends 41 of all detection cables, which is convenient for maintenance personnel to uniformly detect the cables through the detection ends 41, thereby improving the efficiency of maintenance personnel in detecting cables. The protective plug 43 is preferably made of a material with a certain elasticity such as rubber or silicone. The protective plug 43 can block the detection port when the cable is not being detected, thereby preventing dust, water vapor, etc. from entering the detection end 41, causing the conductor in the detection end 41 to be corroded, thereby affecting the detection effect.

[0025] like Figure 1 , 2 As shown, as one of the preferred embodiments of the utility model, a tool drawer 44 is provided at the bottom of the detection cavity 4, and drawer rails 45 are provided between the two sides of the tool drawer 44 and the inner wall of the detection cavity 4, and the tool drawer 44 slides along the extension direction of the drawer rails 45.

[0026] The tool drawer 44 of the utility model can be used to store common tools required for repairing cables, including wrenches, cable strippers, pliers, cable cutting tools, ladder wrenches, screwdrivers, electrician test pens, etc., which are convenient for maintenance personnel to repair cables. The tool drawer 44 slides through the drawer rails 45 on both sides, making it easier to pull out the tool drawer 44, so that the maintenance personnel can use the tools in the tool drawer 44.

[0027] like Figure 1 , 2As shown, as one of the preferred embodiments of the utility model, a distribution chamber door 33 is hinged on one side outside the distribution chamber 3, and the distribution chamber door 33 is provided with an observation window 331, and a detection chamber door 46 is hinged on one side outside the detection chamber 4.

[0028] The utility model opens or closes the distribution cavity 3 through the distribution cavity door 33 to protect the distribution equipment in the distribution cavity 3. In addition, according to the security required by the distribution cabinet, a mechanical lock, an electronic lock, an intelligent lock or other door locks are installed on the distribution cavity door 33. The distribution cavity door 33 is locked by the door lock to prevent the distribution cavity door 33 from being opened at will. A piece of transparent glass is preferably installed at the observation window 331. When performing routine inspections on the distribution cabinet, it is usually not necessary to perform inspections through the detection end 41. At this time, the internal situation of the distribution cabinet body 1 can be observed through the observation window 331; the detection cavity door 46 is used to open or close the detection cavity 4. The opening or closing of the two chambers of the distribution cabinet are controlled by two doors respectively, so as to realize the functional distinction of the distribution cabinet.

[0029] like Figure 1 , 2 As shown, as one of the preferred embodiments of the utility model, a fan 47 facing the distribution cavity 3 is provided in the detection cavity 4, the partition plate 2 is provided with a plurality of ventilation holes 21 connecting the distribution cavity 3 and the detection cavity 4, and the surface of the distribution cabinet body 1 is provided with an air inlet 11 penetrating into the detection cavity 4 and an air outlet 12 penetrating into the distribution cavity 3, and the air inlet 11 and the air outlet 12 are both provided with shutters 13.

[0030] The utility model promotes the air flow in the distribution cabinet body 1 by blowing air toward the distribution chamber 3 through the fan 47 in the detection chamber 4. When the fan 47 is running, external air enters the detection chamber 4 from the air inlet 11, then enters the distribution chamber 3 along the ventilation hole 21, and finally leaves the distribution chamber 3 from the air outlet 12. The heat generated by the operation of the distribution equipment in the distribution chamber 3 is taken away by the above-mentioned air flow method. According to the principle of hot air rising, this method can dissipate the heat of the distribution cabinet body 1 very efficiently; the shutter 13 makes the openings of the air inlet 11 and the air outlet 12 tilt downward, so that air can enter the detection chamber 4 normally along the air inlet 11, and hot air can also leave the distribution chamber normally along the air outlet 12, and at the same time, dust in the external environment can be prevented from entering the distribution cabinet body 1.

[0031] like Figure 1 , 2 As shown, as one of the preferred embodiments of the utility model, a filter screen slot 111 is provided inside the air inlet 11 , and a matching moisture-proof filter screen 112 is provided inside the filter screen slot 111 .

[0032] The moisture-proof filter 112 of the utility model is embedded in the filter groove 111 to cover the air inlet 11. The moisture-proof filter 112 traps water molecules and impurities in the humid air in the mesh structure by physical filtration, thereby preventing moisture from entering the distribution cabinet body 1. At the same time, it does not affect the air in the external environment from entering the distribution cabinet body 1. In humid weather, the moisture-proof filter 112 can be used to prevent the distribution cabinet body 1 from being moisture-proof to prevent the internal distribution equipment from being affected by moisture.

[0033] like Figure 1 , 2 As shown, as one of the preferred embodiments of the utility model, the filter screen slot 111 is provided with a threaded hole extending to the inside of the filter screen slot 111 , and a matching fixing bolt 113 is provided in the threaded hole, and the end of the fixing bolt 113 abuts against the surface of the moisture-proof filter screen 112 .

[0034] After the moisture-proof filter 112 is embedded in the filter slot 111, the fixing bolt 113 can be screwed and tightened by cooperating with the threaded hole. The fixing bolt 113 can be abutted against the moisture-proof filter 112 to clamp it, so that the moisture-proof filter 112 is close to the air inlet 11, thereby improving the moisture-proof effect of the moisture-proof filter 112.

[0035] The above is only a preferred embodiment of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A high and low voltage power distribution cabinet that is easy to maintain, comprising a power distribution cabinet body (1), characterized in that: The power distribution cabinet body (1) is hollow inside and is provided with a partition plate (2) fixedly connected to the power distribution cabinet body (1); the partition plate (2) divides the internal space of the power distribution cabinet body (1) into a power distribution chamber (3) and a detection chamber (4); a plurality of three-way switches (31) are provided in the power distribution chamber (3); the three-way switches (31) are provided with a wire extending to the detection chamber (4); and a detection end (41) is provided at the end of the wire extension; the three-way switch (31) is further provided with two connection terminals (311); and a plurality of the three-way switches (31) are connected to an electric control element (32) by a wire.

2. The high and low voltage distribution cabinet that is easy to maintain according to claim 1 is characterized in that: The detection cavity (4) is provided with a fixed sleeve rod (42) fixedly connected to the plurality of detection ends (41), the surface of the fixed sleeve rod (42) is provided with a plurality of detection ports matching the detection ends (41), and the detection ports are provided with matching protective plugs (43).

3. The high and low voltage distribution cabinet that is easy to maintain according to claim 1 is characterized in that: A tool drawer (44) is provided at the bottom of the detection cavity (4), drawer rails (45) are provided between the two sides of the tool drawer (44) and the inner wall of the detection cavity (4), and the tool drawer (44) slides along the extension direction of the drawer rails (45).

4. The high and low voltage distribution cabinet that is easy to maintain according to claim 1 is characterized in that: A power distribution chamber door (33) is hingedly connected to one side outside the power distribution chamber (3), and the power distribution chamber door (33) is provided with an observation window (331). A detection chamber door (46) is hingedly connected to one side outside the detection chamber (4).

5. The high and low voltage distribution cabinet that is easy to maintain according to claim 1 is characterized in that: The detection chamber (4) is provided with a fan (47) facing the power distribution chamber (3); the partition plate (2) is provided with a plurality of ventilation holes (21) connecting the power distribution chamber (3) and the detection chamber (4); the surface of the power distribution cabinet body (1) is provided with an air inlet (11) penetrating into the detection chamber (4) and an air outlet (12) penetrating into the power distribution chamber (3); and the air inlet (11) and the air outlet (12) are both provided with shutters (13).

6. The high and low voltage distribution cabinet that is easy to maintain according to claim 5 is characterized in that: A filter screen slot (111) is provided on the inner side of the air inlet (11), and a matching moisture-proof filter screen (112) is provided in the filter screen slot (111).

7. The high and low voltage distribution cabinet that is easy to maintain according to claim 6 is characterized in that: The filter screen slot (111) is provided with a threaded hole outside and penetrating to the inside of the filter screen slot (111), a matching fixing bolt (113) is provided inside the threaded hole, and the end of the fixing bolt (113) abuts against the surface of the moisture-proof filter screen (112).

Images