Power cable bus duct combustibility test furnace
By designing an automatic positioning and fixing system, the problem of complex and low efficiency of manual fixing in the combustion test of existing bus ducts is solved, and the automatic fixing and test efficiency of bus ducts are improved.
Patent Information
- Application Number
- CN202421436204.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-22
- Publication Date
- 2025-03-21
- Estimated Expiration
- 2034-06-22
AI Technical Summary
In the combustion performance test of existing bus troughs, because the furnace port of the combustion furnace cannot stabilize the bus troughs of different batches of different sizes, it will manually enter the combustion furnace to fix, which is complex and inefficient.
A power cable bus trough combustion test furnace is designed, using multiple positioning units and support plates. The bus trough is lifted and inserted into the combustion furnace through a lifting mechanism. The positioning unit and support plate are used in conjunction with each other to automatically fix the bottom of the bus trough to avoid manual entry.
It realizes the stable fixed bus trough without manual entry into the combustion furnace, simplifies the fixing process and improves the efficiency of combustion tests.
Smart Images
Figure CN222651921U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of bus duct experimental devices, and in particular to a power cable bus duct flammability test furnace. Background Art
[0002] The bus duct is a closed metal device composed of copper and aluminum busbars, which is used to distribute high power to various components of the distributed system. It has increasingly replaced wires and cables in indoor low-voltage power transmission trunk projects. Therefore, the characteristics of the bus duct during combustion will affect the safety of electricity, so it is necessary to conduct a flammability test on the bus duct.
[0003] In the existing bus duct flammability test, the bus duct is inserted into the combustion furnace from the furnace mouth and then burned to test the flammability of the bus duct. However, bus ducts of different batches are of different sizes, and the furnace mouth of the combustion furnace cannot stably fix the bus ducts of different sizes. It is necessary to manually enter the combustion furnace to fix the bottom of the bus duct, which makes the positioning of the bottom of the bus duct more complicated, affecting the efficiency of the bus duct flammability test. Utility Model Content
[0004] In order to improve the problem that manual entry into the combustion furnace is required to fix the bottom of the bus duct, which results in complex positioning of the bottom of the bus duct and affects the efficiency of the bus duct flammability test, the present application provides a power cable bus duct flammability test furnace.
[0005] The present application provides a power cable bus duct flammability test furnace that adopts the following technical solution:
[0006] A power cable bus duct flammability test furnace, comprising a combustion furnace and a furnace mouth opened on the combustion furnace, and also comprising a lifting mechanism for lifting the bus duct, wherein a plurality of positioning units are arranged in the combustion furnace, and a positioning space for inserting the bus duct is formed between a plurality of the positioning units, and the positioning space is aligned with the furnace mouth, and a plurality of the positioning units can press against the bus duct from four directions: front, rear, left and right, and a supporting plate for placing the end of the bus duct is slidingly arranged in the combustion furnace, and the bus duct can squeeze the supporting plate to slide, and the supporting plate is connected to the positioning unit via a fixing unit, and the positioning unit corresponds to the fixing unit one by one, and the bus duct squeezes the supporting plate to slide, and the positioning unit is fixed by the fixing unit.
[0007] By adopting the above technical scheme, when the bus duct is inserted into the combustion furnace for the flammability test, the bus duct is inserted into the combustion furnace with the furnace mouth, the bus duct passes through the positioning space, the positioning unit abuts against the bus duct, and then the bus duct presses down the supporting plate to slide, and the supporting plate fixes the positioning unit through the fixing unit, so that the positioning unit is fixedly abutted against the bus duct, completing the fixation of the bottom of the bus duct, thereby eliminating the need for workers to enter the combustion furnace, simplifying the fixation of the bottom of the bus duct, and improving the efficiency of the flammability test of the bus duct.
[0008] In a specific feasible implementation scheme, the positioning unit includes a positioning block and a positioning spring, and the end faces of several of the positioning blocks form the positioning space. The positioning block is slidably arranged in the combustion furnace, one end of the positioning spring is connected to the combustion furnace, and the other end is connected to the positioning block, and is used to press the positioning block against the bus duct.
[0009] By adopting the above technical solution, when the bus duct passes through the positioning space, the positioning springs in the four directions of front, rear, left and right push the positioning blocks tightly against the bus duct, thereby guiding the falling process of the bus duct and making the bus duct fall to the position of the supporting plate more accurately.
[0010] In a specific possible implementation scheme, each positioning block is provided with a guide plate at one end facing the positioning space, and a plurality of the guide plates form an expanded opening, so that the bus duct can be inserted into the positioning space through the expanded opening.
[0011] By adopting the above technical solution, the bus duct can be inserted into the positioning space along the expansion formed by the guide plate, thereby improving the convenience of inserting the bus duct into the positioning space.
[0012] In a specific feasible implementation scheme, the fixing unit includes a fixing rod and a fixing block, one end of the fixing rod is fixedly connected to the supporting plate, and the other end extends above the positioning block, the fixing block is fixedly arranged at one end of the fixing rod extending above the positioning block, and the fixing block presses the positioning block against the bus duct through a guide structure.
[0013] By adopting the above technical solution, when the bus duct presses down the supporting plate, the supporting plate drives the fixed block to move downward through the fixing rod, and the fixed block limits the sliding of the positioning block away from the bus duct through the guide structure, so that the positioning block can stably fix the bus duct.
[0014] In a specific possible implementation scheme, the guide structure includes a guide surface arranged on the positioning block, the distance from the guide surface to the positioning space gradually increases from top to bottom, and the fixing block can abut against the guide surface and limit the sliding of the positioning block.
[0015] By adopting the above technical solution, when testing bus ducts of different sizes, the positioning block drives the guide surface to slide to different positions, and the fixing block fixes the positioning block at different sliding positions by abutting against the guide surface at different positions, thereby stably fixing bus ducts of different sizes.
[0016] In a specific possible implementation scheme, a telescopic spring connected to the supporting plate is provided in the combustion furnace, and the telescopic spring is used to push the supporting plate upward and make the fixing block disengage from the guide surface.
[0017] By adopting the above technical solution, when the bus duct test is completed, the bus duct is pulled out of the combustion furnace. At this time, the telescopic spring pushes the supporting plate upward, and the supporting plate drives the fixed block to separate from the guide surface, thereby releasing the fixed restriction on the positioning block, thereby facilitating the bus duct to be pulled out of the combustion furnace.
[0018] In a specific possible implementation scheme, the space between the bus duct and the side wall of the furnace opening is filled with heat insulation cotton.
[0019] By adopting the above technical solution, the gap between the furnace mouth and the bus duct is filled with heat insulation cotton, which can effectively prevent the combustion smoke from leaking out of the furnace through the gap between the furnace mouth and the bus duct, thereby reducing pollution to the surrounding environment.
[0020] In a specific possible implementation manner, a concrete block for sealing the furnace port is cast on the combustion furnace, and the bus duct passes through the concrete block.
[0021] By adopting the above technical solution and utilizing the concrete blocks formed by casting, the sealing effect of the furnace mouth can be improved.
[0022] In a specific feasible implementation scheme, the lifting mechanism includes a gantry truck and a hoisting hook device, wherein the hoisting hook device is arranged on the gantry truck, the gantry truck can drive the hoisting hook device to move above the bus duct, and the hoisting hook device can lift the bus duct.
[0023] By adopting the above technical solution and using a gantry truck and a hoisting hook device to move and hoist the bus duct, the convenience of adjusting the position of the bus duct during the test can be improved.
[0024] In summary, the present application includes at least one of the following beneficial technical effects:
[0025] 1. When the bus duct is inserted into the combustion furnace for the flammability test, the bus duct is inserted into the combustion furnace with the furnace mouth, the bus duct passes through the positioning space, the positioning unit abuts on the bus duct, and then the bus duct presses down the supporting plate to slide, and the supporting plate fixes the positioning unit through the fixing unit, so that the positioning unit is fixedly abutted on the bus duct, completing the fixing of the bottom of the bus duct, thereby eliminating the need for workers to enter the combustion furnace, simplifying the fixing of the bottom of the bus duct, and improving the efficiency of the bus duct flammability test;
[0026] 2. Fill the gap between the furnace mouth and the bus duct with insulation cotton, and then pour concrete at the furnace mouth to form a concrete block to seal the gap between the furnace mouth and the bus duct. This can effectively prevent the combustion flue gas from leaking out of the furnace through the gap between the furnace mouth and the bus duct, reducing pollution to the surrounding environment. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] Figure 1 It is a schematic diagram of the structure of the power cable bus duct flammability test furnace according to an embodiment of the present application.
[0028] Figure 2 It is a schematic diagram used to show the structure of a combustion furnace.
[0029] Figure 3 is along Figure 2 Section view along line AA.
[0030] Figure 4 yes Figure 3 Enlarged view of part B in the middle.
[0031] Figure 5 yes Figure 2 Enlarged view of part C in the middle.
[0032] Figure 6 is along Figure 2 Sectional view along line DD.
[0033] Explanation of the accompanying drawings: 1. combustion furnace; 11. furnace mouth; 12. furnace body; 13. temperature sensor; 14. burner; 15. spray device; 2. positioning unit; 21. positioning space; 22. sliding support tube; 23. positioning block; 24. positioning spring; 25. guide plate; 3. bus duct; 41. supporting plate; 42. telescopic spring; 5. fixing unit; 51. fixing rod; 52. fixing block; 53. stopper; 54. guide surface; 55. support block; 56. sliding through hole; 61. insulation cotton; 62. concrete block; 7. hoisting mechanism; 71. gantry; 72. winch hook device; 721. winch; 722. hook. DETAILED DESCRIPTION
[0034] The following is combined with Figure 1-6 This application is described in further detail.
[0035] The embodiment of the present application discloses a power cable bus duct flammability test furnace.
[0036] Reference Figure 1 , Figure 2 A power cable bus duct flammability test furnace comprises a combustion furnace 1, a furnace opening 11 (such as the attached Figure 3 ), a hoisting mechanism 7 and a plurality of positioning units 2, the combustion furnace 1 includes a furnace body 12, a temperature sensor 13, and a burner 14. The furnace mouth 11 is set at the top of the furnace body 12. The bus duct 3 is inserted into the furnace body 12 through the furnace mouth 11 from top to bottom. The burner 14 burns toward the part of the bus duct 3 inserted into the furnace body 12. The temperature sensor 13 measures the temperature in the furnace body 12. The bus duct 3 is provided with wires forming a passage. The wires are externally connected to a protector and a power supply. By burning the bus duct 3, the temperature of the wires in the bus duct 3 increases, causing the protector to be powered off. When the protector is powered off, the temperature in the furnace body 12 measured by the temperature sensor 13 is observed to judge the combustion characteristics of the bus duct 3. The furnace body 12 is externally connected to a spray device 15. The flue gas generated by the combustion flows through the spray device 15 and is discharged. The spray device 15 can cool the flue gas on the one hand to prevent workers from being scalded by the flue gas, and on the other hand, it can adsorb small solid particles in the flue gas to reduce the pollution of the flue gas to the surrounding environment.
[0037] Reference Figure 2 , Figure 3 , several positioning units 2 are arranged near the bottom of the furnace body 12. The number of positioning units 2 in this embodiment is four, and the four positioning units 2 are respectively arranged at the front, rear, left and right four directions of the bus duct 3. The oppositely arranged ends of the four positioning units 2 surround a positioning space 21 for inserting the bus duct 3. The positioning space 21 is arranged directly below the furnace mouth 11. The four positioning units 2 can all be tightly pressed against the bus duct 3. A supporting plate 41 for placing the end of the bus duct 3 is slidably provided on the inner bottom wall of the furnace body 12. The supporting plate 41 is arranged directly below the furnace mouth 11. Several telescopic springs 42 are provided between the supporting plate 41 and the inner bottom wall of the bus duct 3. One end of the telescopic spring 42 is fixedly connected to the supporting plate 41, and the other end is fixedly connected to the inner bottom wall of the furnace body 12. The supporting plate 41 is connected to the positioning unit 2 through the fixing unit 5 , and the positioning unit 2 corresponds to the fixing unit 5 one by one. When the bus duct 3 presses down the supporting plate 41 to slide, the supporting plate 41 can fix the positioning unit 2 through the fixing unit 5 .
[0038] When the bus duct 3 is inserted into the combustion furnace 1 for a flammability test, the bus duct 3 is lifted by the lifting mechanism 7 and inserted into the furnace body 12 through the furnace mouth 11. During the falling of the bus duct 3 in the furnace body 12, the bus duct 3 passes through the positioning space 21, and the four positioning units 2 abut against the bus duct 3 to guide the falling of the bus duct 3. Then the bus duct 3 presses down the supporting plate 41 to slide, and the supporting plate 41 fixes the positioning unit 2 through the fixing unit 5, so that the positioning unit 2 is fixedly abutted against the bus duct 3, completing the fixation of the bottom of the bus duct 3, thereby eliminating the need for workers to enter the combustion furnace 1, simplifying the fixation of the bottom of the bus duct 3, and improving the efficiency of the flammability test of the bus duct 3.
[0039] Reference Figure 1 In this embodiment, the hoisting mechanism 7 includes a gantry 71 and a hoisting hook device 72. The hoisting hook device 72 includes a hoist 721 and a hook 722. The hoist 721 is fixedly arranged on the crossbeam of the gantry 71. The hook 722 is fixedly arranged on the rope of the hoist 721. The hook 722 hooks the bus duct 3, and then the bus duct 3 is hoisted by the hoist 721. The bus duct 3 is transported by the gantry 71, thereby improving the convenience of adjusting the position of the bus duct 3 during the test.
[0040] Reference Figure 3 , Figure 4 Four sliding support tubes 22 are provided on the inner bottom wall of the furnace body 12. The sliding support tubes 22 correspond to the positioning units 2 one by one. The positioning unit 2 in this embodiment includes a positioning block 23 and a positioning spring 24. One end of the positioning block 23 is inserted into the sliding support tube 22 and is slidably connected to the sliding support tube 22. The positioning spring 24 is arranged in the sliding support tube 22, and one end is fixedly connected to the sliding support tube 22, and the other end is fixedly connected to the positioning block 23. Initially, the positioning spring 24 applies an elastic force to the positioning block 23 horizontally toward the positioning space 21. A guide plate 25 is fixedly provided at one end of the positioning block 23 close to the positioning space 21. The guide plate 25 is arranged on the top wall of the positioning block 23 and is integrally formed with the positioning block 23. The distance between the two relatively arranged guide plates 25 gradually decreases from top to bottom, so that the four guide plates 25 form an expanded opening with a large opening facing upward and a small opening facing the positioning space 21. The bus duct 3 is inserted into the positioning space 21 through the large opening of the expanded opening. The initial spacing between the two relatively positioned blocks 23 is smaller than the width of the bus duct 3 in this direction, and the width of the expanded opening is larger than the width of the bus duct 3 in this direction, so that the bus duct 3 can be inserted into the expanded opening; when the bus duct 3 is inserted into the positioning space 21, the bus duct 3 is inserted into the positioning space 21 through the large opening of the expanded opening under the guidance of the guide plate 25, which can improve the convenience of inserting the bus duct 3 into the positioning space 21.
[0041] Reference Figure 3 , Figure 4The fixing unit 5 in this embodiment includes a fixing rod 51 and a fixing block 52. The positioning block 23 is provided with a sliding through hole 56 arranged along its own sliding direction. One end of the fixing rod 51 is fixedly connected to the supporting plate 41, and the other end passes through the sliding through hole 56 and extends to the top of the positioning block 23. The fixing block 52 is fixedly arranged at one end of the fixing rod 51 extending above the positioning block 23. The sliding support tube 22 is provided with a stopper 53 on one side of the fixing block 52. The fixing block 52 can slide on the stopper 53 along the vertical direction under the drive of the fixing rod 51. The fixing block 52 presses the positioning block 23 against the bus duct 3 through the guide structure.
[0042] Reference Figure 2 , Figure 5 The guide structure includes a guide surface 54 arranged on the positioning block 23. The positioning block 23 is fixedly provided with a support block 55 on the side of the fixed block 52 away from the stop block 53. The guide surface 54 is arranged on the support block 55. The sliding through hole 56 penetrates the top wall of the support block 55 and divides the guide surface 54 into two parts. The distance from the guide surface 54 to the positioning space 21 gradually increases from top to bottom. The fixed block 52 can abut on the guide surface 54 and limit the sliding of the positioning block 23. The fixed block 52 fixes the positioning blocks 23 at different sliding positions by abutting against different positions of the guide surface 54, thereby stably fixing the bus ducts 3 of different sizes.
[0043] When the bus duct 3 is inserted downward into the positioning space 21, the bus duct 3 squeezes the positioning blocks 23 away from each other through the guide plate 25, and the positioning blocks 23 squeeze the positioning springs 24 to contract, so that the positioning blocks 23 abut against the bus duct 3, and guide the falling of the bus duct 3. When the bus duct 3 falls onto the supporting plate 41, the bus duct 3 presses the supporting plate 41 downward to slide, and the supporting plate 41 drives the fixing blocks 52 downward through the fixing rods 51. When the fixing blocks 52 abut against the guide surface 54, the supporting plate 41 stops moving downward, and the fixing blocks 52 are pressed against the guide surface 54 by the gravity of the bus duct 3 itself, limiting the separation of the positioning blocks 23 from the bus duct 3, so that the positioning blocks 23 stably fix the bus duct 3, effectively preventing the bus duct 3 from shaking in the combustion furnace 1, and improving the accuracy of the combustibility test of the bus duct 3.
[0044] When the bus duct 3 test is completed, the bus duct 3 is pulled out of the combustion furnace 1. At this time, the telescopic spring 42 pushes the supporting plate 41 to move upward, and the supporting plate 41 drives the fixing block 52 to separate from the guide surface 54, thereby releasing the fixing restriction on the positioning block 23, thereby facilitating the bus duct 3 to be pulled out of the combustion furnace 1.
[0045] Reference Figure 2 , Figure 6Since the size of the furnace mouth 11 is constant, when the bus ducts 3 of different sizes are inserted into the furnace body 12, a gap will be generated between the bus duct 3 and the furnace mouth 11, and the smoke generated by the combustion in the furnace body 12 can leak along the gap. For this reason, the gap generated between the bus duct 3 and the side wall of the furnace mouth 11 is filled with heat insulation cotton 61, and a concrete block 62 for blocking the furnace mouth 11 is poured at the furnace mouth 11, and the bus duct 3 passes through the concrete block 62. The gap between the furnace mouth 11 and the bus duct 3 is filled with heat insulation cotton 61, and then concrete is poured at the furnace mouth 11 to form a concrete block 62 to seal the gap between the furnace mouth 11 and the bus duct 3, which can effectively prevent the combustion smoke from leaking out of the furnace from the gap between the furnace mouth 11 and the bus duct 3, thereby reducing pollution to the surrounding environment.
[0046] The implementation principle of the power cable bus duct flammability test furnace of the embodiment of the present application is as follows: when the bus duct 3 is inserted into the combustion furnace 1 for a flammability test, the bus duct 3 is lifted by the cooperation of the gantry vehicle 71, the winch 721 and the hook 722, and is inserted into the furnace body 12 through the furnace mouth 11. During the falling process of the bus duct 3 in the furnace body 12, the bus duct 3 squeezes the guide plate 25, so that the four positioning blocks 23 are separated from each other. At this time, the positioning spring 24 contracts, and then the bus duct 3 passes through the positioning space 21. The positioning spring 24 pushes the end of the corresponding positioning block 23 to abut against the bus duct 3, guiding the falling of the bus duct 3, and then the bus duct 3 presses down the supporting plate 41 to slide, and the supporting plate 41 drives the fixing block 52 to move downward through the fixing rod 51, and abuts against the guide surface 54, limiting the positioning block 23 from sliding away from the bus duct 3, completing the fixing of the bottom of the bus duct 3 by the positioning block 23, thereby eliminating the need for workers to enter the combustion furnace 1, simplifying the fixing of the bottom of the bus duct 3, and improving the efficiency of the combustibility test of the bus duct 3.
[0047] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. A power cable bus duct flammability test furnace, comprising a combustion furnace (1) and a furnace opening (11) opened on the combustion furnace (1), characterized in that: The invention also comprises a hoisting mechanism (7) for hoisting the bus duct (3). The combustion furnace (1) is provided with a plurality of positioning units (2). A positioning space (21) for inserting the bus duct (3) is formed between the plurality of positioning units (2). The positioning space (21) is aligned with the furnace opening (11). The plurality of positioning units (2) can press against the bus duct (3) from four directions: front, rear, left and right. A supporting plate (41) for placing the end of the bus duct (3) is slidably provided in the combustion furnace (1). The bus duct (3) can squeeze the supporting plate (41) to slide. The supporting plate (41) is connected to the positioning unit (2) via a fixing unit (5). The positioning unit (2) corresponds to the fixing unit (5) one by one. The bus duct (3) squeezes the supporting plate (41) to slide, and the positioning unit (2) is fixed by the fixing unit (5).
2. The power cable bus duct flammability test furnace according to claim 1 is characterized in that: The positioning unit (2) comprises a positioning block (23) and a positioning spring (24); the end surfaces of a plurality of the positioning blocks (23) enclose the positioning space (21); the positioning block (23) is slidably arranged in the combustion furnace (1); one end of the positioning spring (24) is connected to the combustion furnace (1), and the other end is connected to the positioning block (23), and is used to press the positioning block (23) against the bus duct (3).
3. The power cable bus duct flammability test furnace according to claim 2, characterized in that: Each positioning block (23) is provided with a guide plate (25) at one end facing the positioning space (21), and a plurality of the guide plates (25) form an expanded opening, so that the bus duct (3) can be inserted into the positioning space (21) through the expanded opening.
4. The power cable bus duct flammability test furnace according to claim 2, characterized in that: The fixing unit (5) comprises a fixing rod (51) and a fixing block (52); one end of the fixing rod (51) is fixedly connected to the supporting plate (41), and the other end extends above the positioning block (23); the fixing block (52) is fixedly arranged at the end of the fixing rod (51) extending above the positioning block (23); the fixing block (52) presses the positioning block (23) against the bus duct (3) through a guide structure.
5. The power cable bus duct flammability test furnace according to claim 4, characterized in that: The guide structure comprises a guide surface (54) arranged on the positioning block (23), the distance between the guide surface (54) and the positioning space (21) gradually increases from top to bottom, and the fixed block (52) can abut against the guide surface (54) and limit the sliding of the positioning block (23).
6. The power cable bus duct flammability test furnace according to claim 5, characterized in that: A telescopic spring (42) connected to the support plate (41) is provided in the combustion furnace (1), and the telescopic spring (42) is used to push the support plate (41) upward and cause the fixing block (52) to separate from the guide surface (54).
7. The power cable bus duct flammability test furnace according to claim 1, characterized in that: The space between the bus duct (3) and the side wall of the furnace opening (11) is filled with heat insulation cotton (61).
8. The power cable bus duct flammability test furnace according to claim 1, characterized in that: A concrete block (62) for sealing the furnace opening (11) is cast on the combustion furnace (1), and the bus duct (3) passes through the concrete block (62).
9. The power cable bus duct flammability test furnace according to claim 1, characterized in that: The hoisting mechanism (7) comprises a gantry truck (71) and a hoisting hook device (72); the hoisting hook device (72) is arranged on the gantry truck (71); the gantry truck (71) can drive the hoisting hook device (72) to move above the bus duct (3); and the hoisting hook device (72) can hoist the bus duct (3).