A safety protection device for load testing of components of high and low voltage distribution cabinets

Abstract

The present invention relates to the technical field of protective devices, and discloses a load test safety protective device for components of high and low voltage power distribution cabinets, including a protective box; a load test device; an electric cylinder; a thermal limit plate; a wedge-shaped clamping heat conduction mechanism; and a connector. In the present invention, in the process of pressing the thermal limit plate downward, the two sets of wedge-shaped clamping heat conduction mechanisms can be clamped to the load test device through the connector. Therefore, under the fixing of the thermal limit plate and the two sets of wedge-shaped clamping heat conduction mechanisms, the load test device can be firmly fixed in the inner cavity of the protective box, and the load test device can be safely protected by the protective box. Under the heat conduction effect of the thermal limit plate and the two sets of wedge-shaped clamping heat conduction mechanisms on the load test device, the heat generated by the load test device can be dissipated, reducing the heat accumulation on the load test device, thereby avoiding the load test device from causing safety accidents due to high temperature problems.

Description

Technical Field

[0001] The invention relates to the technical field of protective devices, and in particular to a safety protective device for load testing of components of a high- and low-voltage power distribution cabinet. Background Art

[0002] The Chinese patent document with patent publication number CN206584022U has an authorization publication date of October 24, 2017.

[0003] It discloses a networked load device for testing a generator set, comprising a measurement and control cabinet, control components, and an operation panel; a generator tester, a fan, a printer, a display, a control module, and a PC are arranged in the measurement and control cabinet, and the control components include a signal acquisition bus, various sensors, a load protection device, an auxiliary controller, a load controller, and a contactor; the operation panel includes a resistive load loading area, an inductive load loading area, a main control area, a generator power indication area, and a display area; a generator-specific tester display screen and a comprehensive electricity meter display screen are arranged in sequence from left to right above the display area, and an industrial computer switch, an emergency stop button, and a nameplate marking area are arranged in sequence from left to right below the main control area.

[0004] The above patent document states in its background technology: "After the production and assembly of the generator set is completed, the first thing that needs to be carried out is the factory type inspection. An important part of the factory type inspection is the load loading inspection. The load capacity of the generator set is an important indicator to ensure the normal and effective operation of the generator set. Generally, 0%, 25%, 50%, 75%, 100%, 110%, 100%, 75%, 50%, 25%, and 0% load addition and subtraction inspections are required to ensure the safe operation of the generator set after leaving the factory. The current generator set test network load device is heavy, inconvenient to carry, and has imperfect functions, low accuracy, and low degree of automation. It is also prone to leakage, which reduces the safety factor."

[0005] It can be seen from the background art of the above patent documents that components in high-voltage or low-voltage distribution cabinets also need to be subjected to load inspection after leaving the factory.

[0006] However, when the generator set test network load device in the above patent document is used to perform load tests on components in a high-voltage or low-voltage distribution cabinet, since high-voltage current will continuously pass through the generator set test network load device, its body will generate high temperature. When the load test is repeatedly performed, it is also easy for the generator set test network load device to cause safety accidents, for example, it may explode due to high temperature problems. Summary of the invention

[0007] The purpose of the present invention is to solve the shortcomings existing in the prior art and to propose a load test safety protection device for components of a high and low voltage distribution cabinet.

[0008] To achieve the above object, the present invention provides the following technical solution: a safety protection device for load testing of components of a high and low voltage distribution cabinet, comprising:

[0009] Protective box;

[0010] A load test device placed in the inner cavity of the protective box;

[0011] An electric cylinder is fixedly mounted on the top of the protection box, and a piston rod of the electric cylinder passes through the top of the protection box downward and extends to the inner cavity of the protection box;

[0012] A heat-conducting limit plate, which is fixedly mounted on the end of the piston rod of the electric cylinder;

[0013] A wedge-shaped clamping heat-conducting mechanism, which is provided with two groups, and the two groups of the wedge-shaped clamping heat-conducting mechanism are respectively installed on both sides of the inner cavity of the protection box; and

[0014] Connectors, which are provided in two groups, are respectively provided on both sides of the heat conduction limit plate, one end of the connector is slidably mounted on the heat conduction limit plate, and the other end is slidably mounted on the wedge-shaped clamping heat conduction mechanism;

[0015] When the electric cylinder extends its piston rod downward, the heat-conducting limit plate can be pressed downward onto the top of the load test device, and the two sets of wedge-shaped clamping heat-conducting mechanisms can generate clamping forces on both sides of the load test device respectively.

[0016] As a preferred technical solution, the heat conduction limiting plate is rectangular;

[0017] Upper T-shaped sliding grooves are provided on both sides of the bottom of the heat conduction limiting plate;

[0018] One end of the connecting piece is installed in the upper T-shaped sliding groove.

[0019] As a preferred technical solution, the wedge-shaped clamping heat-conducting mechanism includes a wedge-shaped fixed heat-conducting block, which is fixedly mounted on the bottom edge of the inner cavity of the protection box, and a wedge-shaped clamping heat-conducting block is slidably mounted on the wedge-shaped fixed heat-conducting block;

[0020] A lower T-shaped sliding groove is provided on the top of the wedge-shaped clamping heat conducting block;

[0021] One end of the connecting piece away from the heat conduction limiting plate is installed in the lower T-shaped sliding groove.

[0022] As a preferred technical solution, the connecting member includes a connecting rod, an upper T-shaped slider is fixedly installed on the top of the connecting rod, and the upper T-shaped slider is slidably installed in the upper T-shaped slide groove;

[0023] A lower T-shaped sliding block is fixedly installed on the bottom end of the connecting rod, and the lower T-shaped sliding block is slidably installed in the lower T-shaped sliding groove.

[0024] As a preferred technical solution, the positions of the upper T-shaped slide groove and the lower T-shaped slide groove can correspond to each other.

[0025] As a preferred technical solution, the outer side of the wedge-shaped fixed heat-conducting block has a positioning inclined surface;

[0026] The inner side of the wedge-shaped clamping heat-conducting block has a moving inclined surface;

[0027] The movable inclined plane can fit with the positioning inclined plane and slide on the positioning inclined plane.

[0028] As a preferred technical solution, a guide groove is provided on the positioning inclined surface;

[0029] A guide slide bar is fixedly installed on the movable inclined surface;

[0030] The guide slide bar can be inserted and installed in the guide slide groove, and can slide in the guide slide groove.

[0031] As a preferred technical solution, the positions of the guide groove and the guide slide bar can correspond to each other;

[0032] The guide slot can match the shape and size of the guide slide bar.

[0033] As a preferred technical solution, a box door is installed on one side wall of the protection box, hinges are fixedly installed between the upper and lower parts of one side of the box door and the protection box, and a box door lock is fixedly installed on the side of the box door away from the hinge.

[0034] As a preferred technical solution, the box door is made of a tempered glass plate.

[0035] Compared with the prior art, the present invention has the following beneficial effects:

[0036] 1. In the present invention, when using the load testing equipment to perform load tests on the components in the high-voltage and low-voltage distribution cabinets respectively, the load testing equipment is placed in the inner cavity of the protection box. After the electric cylinder extends its piston rod, the bottom of the heat-conducting limit plate can be pressed downwardly onto the top of the load testing equipment. In the process of pressing the heat-conducting limit plate downwardly, the two sets of wedge-shaped clamping heat-conducting mechanisms can be clamped to the load testing equipment through the connecting parts. Therefore, with the fixation of the heat-conducting limit plate and the two sets of wedge-shaped clamping heat-conducting mechanisms, the load testing equipment can be firmly fixed in the inner cavity of the protection box, and the load testing equipment can be safely protected by the protection box.

[0037] 2. In the present invention, under the heat conduction effect of the heat conduction limit plate and two sets of wedge-shaped clamping heat conduction mechanisms on the load test equipment, the heat generated by the load test equipment can be dissipated, reducing heat accumulation on the load test equipment, thereby avoiding safety accidents caused by high temperature problems of the load test equipment.

[0038] 3. In the present invention, when the heat-conducting limit plate moves upward or downward, the two sets of connecting parts can drive the movement of the two wedge-shaped clamping heat-conducting mechanisms, so that the heat-conducting limit plate and the two sets of wedge-shaped clamping heat-conducting mechanisms can synchronously clamp or release the load test equipment, thereby enabling the protective device to adapt to a variety of load test equipment of different sizes.

[0039] Fourth, in the present invention, the upper T-shaped slider is slidably installed in the upper T-shaped slide groove, and can achieve sliding cooperation with the upper T-shaped slide groove, and can achieve locking under the connection between the upper T-shaped slide groove and the upper T-shaped slider;

[0040] The lower T-shaped slider is slidably installed in the lower T-shaped slide groove, and can achieve sliding cooperation with the lower T-shaped slide groove, and the lower T-shaped slider and the lower T-shaped slide groove can be locked under the connection effect.

[0041] 5. In the present invention, when the heat-conducting limit plate moves, it can make the wedge-shaped clamping heat-conducting block slide up and down on the wedge-shaped fixed heat-conducting block through the connecting piece. When the two wedge-shaped clamping heat-conducting blocks slide downward synchronously, the load testing device can be clamped and fixed on both sides of the load testing device. When the two wedge-shaped clamping heat-conducting blocks clamp the load testing device, the wedge-shaped clamping heat-conducting blocks can also conduct heat to the load testing device.

[0042] 6. In the present invention, the wedge-shaped movement of the wedge-shaped clamping heat-conducting block can be achieved under the cooperation of the moving inclined surface and the positioning inclined surface.

[0043] 7. In the present invention, after the guide slide bar is slidably installed in the guide slide groove, the wedge-shaped movement of the wedge-shaped clamping heat-conducting block on the wedge-shaped fixed heat-conducting block can be made more guiding and less prone to positional displacement.

[0044] 8. In the present invention, water circulation can be realized on the protection box through the water circulation cooling mechanism, so as to cool the load test equipment. Water can be placed in the water body accommodating cavity. When the water circulation cooling mechanism is working, it can transport the water in one of the water body accommodating cavities through one end thereof to the other end of the water circulation cooling mechanism, and then transport it to the other water body accommodating cavity. When the two-way water pump is working in the forward direction, the two-way water pump can extract the water in the water body accommodating cavity adjacent to the pumping pipe through the pumping pipe, transport it to the water delivery pipe, and then transport it to the water body accommodating cavity adjacent to the water delivery pipe through the water delivery pipe;

[0045] When the bidirectional water pump works in the reverse direction, the bidirectional water pump can extract water from the water body containing cavity adjacent to the water delivery pipe through the water delivery pipe, transport it to the water pumping pipe, and then transport it to the water body containing cavity adjacent to the water pumping pipe through the water pumping pipe;

[0046] The bidirectional water pump can enter the reverse working state after working in the forward direction, and enter the forward working state again after entering the reverse working state, and work repeatedly, so that the water in the two water holding chambers can be continuously circulated. During the circulation process, a large amount of heat can be taken away, thereby cooling the load test equipment and reducing the safety hazards of the load test equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 A schematic cross-sectional structure diagram of a load test safety protection device for high and low voltage distribution cabinet components provided by the present invention;

[0048] Figure 2 A schematic diagram of the main structure of a load test safety protection device for high and low voltage distribution cabinet components provided by the present invention;

[0049] Figure 3 A schematic diagram of the three-dimensional structure of a wedge-shaped clamping heat-conducting mechanism in a load test safety protection device for high and low voltage distribution cabinet components provided by the present invention;

[0050] Figure 4 for Figure 1 A schematic diagram of the structure of the enlarged portion A in FIG.

[0051] Figure 5 for Figure 3 A schematic diagram of the structure of the enlarged portion B in FIG.

[0052] Figure 6 An exploded diagram of a wedge-shaped clamping heat-conducting mechanism in a load test safety protection device for high and low voltage distribution cabinet components provided by the present invention;

[0053] Figure 7 A schematic diagram of the top view of the structure of a wedge-shaped clamping heat-conducting mechanism in a load test safety protection device for high and low voltage distribution cabinet components provided by the present invention;

[0054] Figure 8 for Figure 7 Schematic diagram of the cross-sectional structure along line AA.

[0055] In the figure: 1. protection box; 101. water containing chamber; 2. load testing equipment; 3. electric cylinder; 4. heat transfer limit plate; 401. upper T-shaped slide; 5. connector; 501. connecting rod; 502. upper T-shaped slider; 503. lower T-shaped slider; 6. wedge-shaped clamping heat transfer mechanism; 601. wedge-shaped fixed heat transfer block; 6011. guide slide; 6012. positioning inclined plane; 602. wedge-shaped clamping heat transfer block; 6021. guide slide; 6022. moving inclined plane; 6023. lower T-shaped slide; 7. water circulation cooling mechanism; 701. two-way water pump; 702. water pumping pipe; 703. water delivery pipe; 8. first circulation water inlet; 9. second circulation water inlet; 10. water inlet; 11. water inlet valve; 12. box door; 13. hinge; 14. box door lock. DETAILED DESCRIPTION

[0056] 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 described embodiments 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.

[0057] Embodiment 1

[0058] See also Figure 1-Figure 8 , the present invention provides a technical solution:

[0059] like Figure 1-Figure 8 As shown, a safety protection device for load testing of components of a high and low voltage distribution cabinet comprises:

[0060] Protective box 1;

[0061] A load test device 2, which is placed in the inner cavity of the protective box 1;

[0062] The electric cylinder 3 is fixedly mounted on the top of the protection box 1, and the piston rod of the electric cylinder 3 passes through the top of the protection box 1 downward and extends to the inner cavity of the protection box 1;

[0063] A heat-conducting limit plate 4, which is fixedly mounted on the end of the piston rod of the electric cylinder 3;

[0064] Wedge-shaped clamping heat-conducting mechanisms 6, of which two groups are provided, and the two groups of wedge-shaped clamping heat-conducting mechanisms 6 are respectively installed on both sides of the inner cavity of the protection box 1; and

[0065] Connectors 5, which are provided in two groups, are respectively provided on both sides of the heat conduction limit plate 4, one end of the connector 5 is slidably mounted on the heat conduction limit plate 4, and the other end is slidably mounted on the wedge-shaped clamping heat conduction mechanism 6;

[0066] When the electric cylinder 3 extends its piston rod downward, the heat-conducting limit plate 4 can be pressed downward onto the top of the load test device 2 , and the two sets of wedge-shaped clamping heat-conducting mechanisms 6 can generate clamping forces on both sides of the load test device 2 .

[0067] By adopting the above technical scheme, when the load test device 2 is used to perform load tests on the components in the high-voltage and low-voltage distribution cabinets respectively, the load test device 2 is placed in the inner cavity of the protection box 1. After the electric cylinder 3 extends its piston rod, the bottom of the heat-conducting limit plate 4 can be pressed downward on the top of the load test device 2. In the process of pressing the heat-conducting limit plate 4 downward, the two sets of wedge-shaped clamping heat-conducting mechanisms 6 can be clamped to the load test device 2 through the connecting piece 5. Therefore, under the fixation of the heat-conducting limit plate 4 and the two sets of wedge-shaped clamping heat-conducting mechanisms 6, the load test device 2 can be firmly fixed in the inner cavity of the protection box 1, and the load test device 2 is safely protected by the protection box 1;

[0068] At the same time, under the heat conduction effect of the heat conduction limit plate 4 and the two sets of wedge-shaped clamping heat conduction mechanisms 6 on the load test device 2, the heat generated by the load test device 2 can be dissipated, reducing the heat accumulation on the load test device 2, thereby avoiding the load test device 2 causing a safety accident due to high temperature problems;

[0069] At the same time, when the thermal limit plate 4 moves upward or downward, the two sets of connecting parts 5 can drive the movement of the two wedge-shaped clamping heat conducting mechanisms 6, so that the thermal limit plate 4 and the two sets of wedge-shaped clamping heat conducting mechanisms 6 can synchronously clamp or release the load testing equipment 2, thereby enabling the protective device to adapt to load testing equipment 2 of various sizes.

[0070] Embodiment 2

[0071] like Figure 1-Figure 8 As shown, based on the first embodiment, the following improvements are made:

[0072] Furthermore, the heat conduction limiting plate 4 is rectangular;

[0073] Upper T-shaped sliding grooves 401 are provided on both sides of the bottom of the heat conduction limiting plate 4;

[0074] One end of the connecting member 5 is installed in the upper T-shaped sliding groove 401 .

[0075] By adopting the above technical solution, the upper T-shaped slide groove 401 can facilitate the installation of one end of the connecting member 5.

[0076] Furthermore, the wedge-shaped clamping heat-conducting mechanism 6 includes a wedge-shaped fixed heat-conducting block 601, which is fixedly mounted on the bottom edge of the inner cavity of the protection box 1, and a wedge-shaped clamping heat-conducting block 602 is slidably mounted on the wedge-shaped fixed heat-conducting block 601;

[0077] A lower T-shaped slide groove 6023 is provided on the top of the wedge-shaped clamping heat conducting block 602;

[0078] One end of the connecting member 5 away from the heat-conducting limiting plate 4 is installed in the lower T-shaped sliding groove 6023 .

[0079] By adopting the above technical solution, the lower T-shaped slide groove 6023 can facilitate the installation of the other end of the connecting member 5;

[0080] The wedge-shaped fixed heat conductive block 601 is in a fixed state when in operation or not. The wedge-shaped fixed heat conductive block 601 is in a movable state when in operation, and the wedge-shaped clamping heat conductive block 602 can slide up and down on the wedge-shaped fixed heat conductive block 601 .

[0081] Furthermore, the connecting member 5 includes a connecting rod 501, and an upper T-shaped slider 502 is fixedly installed on the top of the connecting rod 501, and the upper T-shaped slider 502 is slidably installed in the upper T-shaped slide groove 401;

[0082] A lower T-shaped slider 503 is fixedly mounted on the bottom end of the connecting rod 501 , and the lower T-shaped slider 503 is slidably mounted in the lower T-shaped slide groove 6023 .

[0083] By adopting the above technical solution, the upper T-shaped slider 502 is slidably installed in the upper T-shaped slide groove 401, and can achieve sliding cooperation with the upper T-shaped slide groove 401, and under the connection between the upper T-shaped slide groove 401 and the upper T-shaped slider 502, locking can be achieved;

[0084] The lower T-shaped slider 503 is slidably installed in the lower T-shaped slot 6023, and can achieve sliding cooperation with the lower T-shaped slot 6023. Under the connection between the lower T-shaped slider 503 and the lower T-shaped slot 6023, locking can be achieved, so that when the heat conduction limit plate 4 moves, the wedge-shaped clamping heat conduction block 602 can slide up and down on the wedge-shaped fixed heat conduction block 601 through the connecting piece 5. When the two wedge-shaped clamping heat conduction blocks 602 slide downward synchronously, the load test device 2 can be clamped and fixed on both sides of the load test device 2. When the two wedge-shaped clamping heat conduction blocks 602 clamp the load test device 2, the wedge-shaped clamping heat conduction blocks 602 can also conduct heat to the load test device 2.

[0085] Furthermore, the positions of the upper T-shaped slide groove 401 and the lower T-shaped slide groove 6023 can correspond to each other.

[0086] By adopting the above technical solution, the installation of the connecting member 5 is facilitated.

[0087] Furthermore, the outer side of the wedge-shaped fixed heat-conducting block 601 has a positioning inclined surface 6012;

[0088] The inner side of the wedge-shaped clamping heat conductive block 602 has a moving inclined surface 6022;

[0089] The movable inclined surface 6022 can fit with the positioning inclined surface 6012 and slide on the positioning inclined surface 6012 .

[0090] By adopting the above technical solution, under the cooperation of the moving inclined surface 6022 and the positioning inclined surface 6012, the wedge-shaped movement of the wedge-shaped clamping heat conductive block 602 can be achieved.

[0091] Furthermore, a guide groove 6011 is provided on the positioning inclined surface 6012;

[0092] A guide slide bar 6021 is fixedly mounted on the movable inclined surface 6022;

[0093] The guide slide bar 6021 can be inserted and installed in the guide slide groove 6011 and can slide in the guide slide groove 6011.

[0094] By adopting the above technical solution, after the guide slide bar 6021 is slidably installed in the guide slide groove 6011, the wedge-shaped movement of the wedge-shaped clamping heat conductive block 602 on the wedge-shaped fixed heat conductive block 601 can be made more guiding and less prone to position displacement.

[0095] Further, the positions of the guide slot 6011 and the guide slide bar 6021 can correspond to each other;

[0096] The guide groove 6011 can match the shape and size of the guide slide bar 6021 .

[0097] By adopting the above technical solution, the guide slide bar 6021 can be easily installed in the guide slide groove 6011.

[0098] Furthermore, a box door 12 is installed on one side wall of the protection box 1, hinges 13 are fixedly installed between the upper and lower parts of one side of the box door 12 and the protection box 1, and a box door lock 14 is fixedly installed on the side of the box door 12 away from the hinge 13.

[0099] By adopting the above technical solution, when using the load testing equipment 2 for testing, you can choose to close the box door 12 or open the box door 12. When closing, just lock the door lock 14 installed on the box door 12. When opening, insert the key into the door lock 14 and rotate it to open the box door 12.

[0100] Furthermore, the box door 12 is made of a tempered glass plate.

[0101] By adopting the above technical solution, after closing the box door 12 , the working condition of the load testing device 2 placed in the protective box 1 can be observed through the box door 12 .

[0102] Embodiment 3

[0103] like Figure 1-Figure 8 As shown, it is improved on the basis of embodiment 1 or 2:

[0104] Furthermore, a water circulation cooling mechanism 7 is installed on the protection box 1 .

[0105] By adopting the above technical solution, water circulation can be achieved on the protection box 1 through the water circulation cooling mechanism 7, so as to cool the load test equipment 2.

[0106] Embodiment 4

[0107] like Figure 1-Figure 8 As shown, based on the third embodiment, the following improvements are made:

[0108] Furthermore, water containing chambers 101 are provided in opposite side walls of the protection box 1;

[0109] The water containing chamber 101 is filled with water;

[0110] The two ends of the water circulation cooling mechanism 7 are connected to the inner cavities of the two water accommodating chambers 101 respectively.

[0111] By adopting the above technical solution, water can be contained in the water body accommodating chamber 101. When the water circulation cooling mechanism 7 is working, it can transport the water in one of the water body accommodating chambers 101 through one end thereof to the other end of the water circulation cooling mechanism 7, and then to the other water body accommodating chamber 101.

[0112] Furthermore, the water circulation cooling mechanism 7 includes a bidirectional water pump 701, and the bidirectional water pump 701 is fixedly installed on one side of the top of the protection box 1;

[0113] The water inlet of the two-way water pump 701 is connected to a water pumping pipe 702, and the water outlet of the two-way water pump 701 is connected to a water delivery pipe 703;

[0114] A first circulating water inlet 8 and a second circulating water inlet 9 are fixedly installed at the lower parts of the outer walls on both sides of the opposite sides of the protection box 1, and the positions of the first circulating water inlet 8 and the second circulating water inlet 9 correspond to the positions of the two water body accommodating chambers 101, and the inner cavities of the first circulating water inlet 8 and the second circulating water inlet 9 are respectively connected to the inner cavities of the two water body accommodating chambers 101;

[0115] One end of the water pumping pipe 702 away from the two-way water pump 701 is connected to the second circulating water inlet 9 , and one end of the water delivery pipe 703 away from the two-way water pump 701 is connected to the first circulating water inlet 8 .

[0116] By adopting the above technical solution, when the bidirectional water pump 701 works in the forward direction, the bidirectional water pump 701 can extract water in the water body accommodating chamber 101 adjacent to the water pumping pipe 702 through the water pumping pipe 702, and transport it to the water delivery pipe 703, and then transport it to the water body accommodating chamber 101 adjacent to the water delivery pipe 703 through the water delivery pipe 703;

[0117] When the bidirectional water pump 701 works in the reverse direction, the bidirectional water pump 701 can extract water from the water body accommodating chamber 101 adjacent to the water delivery pipe 703 through the water delivery pipe 703, and transport it to the water pumping pipe 702, and then the water pumping pipe 702 transports the water to the water body accommodating chamber 101 adjacent to the water pumping pipe 702;

[0118] The bidirectional water pump 701 can enter the reverse working state after working in the forward direction, and enter the forward working state again after entering the reverse working state, and work repeatedly, so that the water in the two water body holding chambers 101 can be continuously circulated. During the circulation process, a large amount of heat can be taken away, thereby cooling the load testing equipment 2 to reduce the safety hazards of the load testing equipment 2.

[0119] Furthermore, outer walls of the first circulating water inlet 8 and the second circulating water inlet 9 are tangent to the bottoms of the two water accommodating cavities 101 , respectively.

[0120] By adopting the above technical solution, it is more convenient for the water in the two water accommodating chambers 101 to circulate through the first circulating water inlet 8 and the second circulating water inlet 9 respectively.

[0121] Furthermore, water inlets 10 are fixedly installed on the upper parts of the two opposite side walls of the protection box 1, and the inner cavity of the water inlet 10 is connected to the inner cavity of the water body accommodating cavity 101;

[0122] A water inlet valve 11 is installed on the water inlet 10 .

[0123] By adopting the above technical solution, when it is necessary to add water to the water body accommodating chamber 101, the water inlet valve 11 is loosened, one end of the external water pipe (not shown in the figure) is connected to the water inlet 10, and the other end is connected to the faucet (not shown in the figure), and the faucet is turned on to add water to the water body accommodating chamber 101;

[0124] After adding water, tighten the water inlet valve 11.

[0125] In summary, the working principle of the present invention is as follows: when using the load test device 2 to perform load tests on the components in the high-voltage and low-voltage distribution cabinets respectively, the load test device 2 is placed in the inner cavity of the protection box 1, and after the electric cylinder 3 extends its piston rod, the bottom of the heat-conducting limit plate 4 can be pressed downwardly on the top of the load test device 2. In the process of pressing the heat-conducting limit plate 4 downwardly, the two sets of wedge-shaped clamping heat-conducting mechanisms 6 can be clamped to the load test device 2 through the connecting piece 5. Therefore, under the fixation of the heat-conducting limit plate 4 and the two sets of wedge-shaped clamping heat-conducting mechanisms 6, the load test device 2 can be firmly fixed in the inner cavity of the protection box 1, and the load test device 2 can be safely protected by the protection box 1;

[0126] At the same time, under the heat conduction effect of the heat conduction limit plate 4 and the two sets of wedge-shaped clamping heat conduction mechanisms 6 on the load test device 2, the heat generated by the load test device 2 can be dissipated, reducing the heat accumulation on the load test device 2, thereby avoiding the load test device 2 causing a safety accident due to high temperature problems;

[0127] At the same time, when the heat conduction limit plate 4 moves upward or downward, the two sets of connecting members 5 can drive the movement of the two wedge-shaped clamping heat conduction mechanisms 6, so that the heat conduction limit plate 4 and the two sets of wedge-shaped clamping heat conduction mechanisms 6 can synchronously clamp or release the load test device 2, so that the protective device can be adapted to a variety of load test devices 2 of different sizes;

[0128] The upper T-shaped slider 502 is slidably installed in the upper T-shaped slide groove 401, and can achieve sliding cooperation with the upper T-shaped slide groove 401, and can achieve locking under the connection between the upper T-shaped slide groove 401 and the upper T-shaped slider 502;

[0129] The lower T-shaped slider 503 is slidably installed in the lower T-shaped slide groove 6023, and can achieve sliding cooperation with the lower T-shaped slide groove 6023. Under the connection between the lower T-shaped slider 503 and the lower T-shaped slide groove 6023, locking can be achieved, so that when the heat conduction limit plate 4 moves, the wedge-shaped clamping heat conduction block 602 can slide up and down on the wedge-shaped fixed heat conduction block 601 through the connecting piece 5. When the two wedge-shaped clamping heat conduction blocks 602 slide downward synchronously, the load test device 2 can be clamped and fixed on both sides of the load test device 2. When the two wedge-shaped clamping heat conduction blocks 602 clamp the load test device 2, the wedge-shaped clamping heat conduction blocks 602 can also conduct heat to the load test device 2.

[0130] Under the cooperation of the moving inclined surface 6022 and the positioning inclined surface 6012, the wedge-shaped movement of the wedge-shaped clamping heat conducting block 602 can be achieved;

[0131] After the guide slide bar 6021 is slidably installed in the guide slide groove 6011, the wedge-shaped clamping heat-conducting block 602 can move in a wedge shape on the wedge-shaped fixed heat-conducting block 601, which is more guiding and less likely to cause position deviation;

[0132] When using the load test device 2 for testing, the box door 12 can be closed or opened. When closed, the box door lock 14 installed on the box door 12 can be locked. When opened, a key is inserted into the box door lock 14 and rotated to open the box door 12.

[0133] Through the water circulation cooling mechanism 7, water circulation can be realized on the protection box 1, so as to cool down the load test equipment 2. Water can be contained in the water body accommodating chamber 101. When the water circulation cooling mechanism 7 is working, the water in one of the water body accommodating chambers 101 can be transported to the other end of the water circulation cooling mechanism 7 through one end thereof, and then transported to another water body accommodating chamber 101. When the two-way water pump 701 is working in the forward direction, the two-way water pump 701 can extract the water in the water body accommodating chamber 101 adjacent to the water pumping pipe 702 through the water pumping pipe 702, transport it to the water delivery pipe 703, and then transport it to the water body accommodating chamber 101 adjacent to the water delivery pipe 703 through the water delivery pipe 703;

[0134] When the bidirectional water pump 701 works in the reverse direction, the bidirectional water pump 701 can extract water from the water body accommodating chamber 101 adjacent to the water delivery pipe 703 through the water delivery pipe 703, and transport it to the water pumping pipe 702, and then the water pumping pipe 702 transports the water to the water body accommodating chamber 101 adjacent to the water pumping pipe 702;

[0135] The bidirectional water pump 701 can enter the reverse working state after working in the forward direction, and enter the forward working state again after entering the reverse working state, and work repeatedly, so that the water in the two water body holding chambers 101 can be continuously circulated. During the circulation process, a large amount of heat can be taken away, thereby cooling the load testing equipment 2 to reduce the safety hazards of the load testing equipment 2.

[0136] The load test equipment 2 in the article uses a networked load device for testing a generator set disclosed in a Chinese patent document with patent announcement number CN206584022U, and the load device includes a measurement and control cabinet, control components, and an operation panel; a generator tester, a fan, a printer, a display, a control module, and a PC are arranged in the measurement and control cabinet, and the control components include a signal acquisition bus, various sensors, a load protection device, an auxiliary controller, a load controller, and a contactor; the operation panel includes a resistive load loading area, an inductive load loading area, a main control area, a generator power indication area, and a display area; a generator-specific tester display screen and a comprehensive electricity meter display screen are arranged from left to right above the display area, and an industrial computer switch, an emergency stop button, and a nameplate marking area are arranged from left to right below the main control area.

[0137] The loading device adopts modular design to achieve mass production, is light in weight, has manual loading and automatic loading functions, and has high loading accuracy and safety factor.

[0138] The load device can be used for load testing of components in high-voltage and low-voltage distribution cabinets.

[0139] The above different embodiments can be combined, replaced and used in conjunction with each other.

[0140] Parts not involved in the present invention are the same as the prior art or can be implemented by the prior art. Although the embodiments of the present invention have been shown and described, it is understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A safety protection device for load testing of components in high and low voltage distribution cabinets, characterized in that: include: Protective box (1); A load test device (2) is placed in the inner cavity of the protective box (1); An electric cylinder (3) is fixedly mounted on the top of the protection box (1), and a piston rod of the electric cylinder (3) passes downward through the top of the protection box (1) and extends to the inner cavity of the protection box (1); A heat-conducting limit plate (4) fixedly mounted on the end of the piston rod of the electric cylinder (3); Wedge-shaped clamping heat-conducting mechanisms (6), which are provided in two groups, and the two groups of wedge-shaped clamping heat-conducting mechanisms (6) are respectively installed on both sides of the inner cavity of the protection box (1); and Connecting members (5), which are provided in two groups, and the two groups of connecting members (5) are respectively provided on both sides of the heat conduction limiting plate (4), one end of the connecting member (5) is slidably mounted on the heat conduction limiting plate (4), and the other end is slidably mounted on the wedge-shaped clamping heat conduction mechanism (6); When the electric cylinder (3) extends its piston rod downward, the heat-conducting limit plate (4) can be pressed downward onto the top of the load test device (2), and the two sets of wedge-shaped clamping heat-conducting mechanisms (6) can respectively generate clamping forces on both sides of the load test device (2); The heat conduction limiting plate (4) is rectangular; Upper T-shaped sliding grooves (401) are provided on both sides of the bottom of the heat conduction limiting plate (4); One end of the connecting member (5) is installed in the upper T-shaped slide groove (401); The wedge-shaped clamping heat-conducting mechanism (6) comprises a wedge-shaped fixed heat-conducting block (601), the wedge-shaped fixed heat-conducting block (601) is fixedly mounted on the bottom edge of the inner cavity of the protection box (1), and a wedge-shaped clamping heat-conducting block (602) is slidably mounted on the wedge-shaped fixed heat-conducting block (601); A lower T-shaped sliding groove (6023) is provided on the top of the wedge-shaped clamping heat-conducting block (602); One end of the connecting member (5) away from the heat-conducting limiting plate (4) is installed in the lower T-shaped sliding groove (6023); The connecting member (5) comprises a connecting rod (501), an upper T-shaped slider (502) is fixedly mounted on the top of the connecting rod (501), and the upper T-shaped slider (502) is slidably mounted in the upper T-shaped slide groove (401); A lower T-shaped slider (503) is fixedly mounted on the bottom end of the connecting rod (501), and the lower T-shaped slider (503) is slidably mounted in a lower T-shaped slide groove (6023); The outer side of the wedge-shaped fixed heat-conducting block (601) is provided with a positioning inclined surface (6012); The inner side of the wedge-shaped clamping heat-conducting block (602) is provided with a movable inclined surface (6022); The movable inclined plane (6022) can fit with the positioning inclined plane (6012) and slide on the positioning inclined plane (6012); The positioning inclined surface (6012) is provided with a guide slot (6011); A guide slide bar (6021) is fixedly mounted on the movable inclined surface (6022); The guide slide bar (6021) can be inserted and installed in the guide slide groove (6011), and can slide in the guide slide groove (6011).

2. A high and low voltage distribution cabinet component load test safety protection device according to claim 1, characterized in that: The positions of the upper T-shaped slide groove (401) and the lower T-shaped slide groove (6023) can correspond to each other.

3. A high and low voltage distribution cabinet component load test safety protection device according to claim 2, characterized in that: The positions of the guide groove (6011) and the guide slide bar (6021) can correspond to each other; The guide slide groove (6011) can match the shape and size of the guide slide bar (6021).

4. A safety protection device for load testing of components of a high and low voltage distribution cabinet according to claim 1, characterized in that: A box door (12) is installed on one side wall of the protection box (1), hinges (13) are fixedly installed between the upper and lower parts of one side of the box door (12) and the protection box (1), and a box door lock (14) is fixedly installed on the side of the box door (12) away from the hinge (13).

5. A safety protection device for load testing of components of a high and low voltage distribution cabinet according to claim 4, characterized in that: The box door (12) is made of a tempered glass plate.

Images