Calcium carbide furnace system sharing arc burner
By setting up copper strip connectors and copper pipes in the calcium carbide furnace system, the arc sharing between the calcium carbide furnace is achieved, and the problem of the burner being difficult to burn through the furnace eye during the starting of the calcium carbide furnace is solved, which improves the furnace discharge efficiency and safety, and reduces production costs.
Patent Information
- Application Number
- CN202422209009.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-10
- Publication Date
- 2025-07-08
- Estimated Expiration
- 2034-09-10
AI Technical Summary
During the start-up process of existing calcium carbide furnaces, due to the small voltage and current provided by the transformer, it is difficult for the burn-through device to effectively burn through the furnace eye, resulting in low elimination efficiency and prone to process and safety accidents.
A calcium carbide furnace system with a shared burn-through device was designed. By setting up copper strip connections and copper tubes between the two calcium carbide furnaces, the transformer of the calcium carbide furnace is used to power the burn-through device of the low-load calcium carbide furnace, so as to achieve the sharing of arcs and quickly burn through the furnace eye.
It improves the efficiency of the discharge of the calcium carbide furnace, avoids the deterioration of the furnace condition and the occurrence of safety accidents, reduces production costs, and ensures the safe and stable operation of the calcium carbide furnace.
Smart Images
Figure CN223077403U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an electric calcium carbide furnace, in particular to an electric calcium carbide furnace system sharing a burner Background Technique
[0002] Calcium carbide (CaC2) is an important chemical raw material, which is widely used in many fields such as chemical industry, metallurgy, medicine, etc., and can especially be used as a raw material for producing polymer plastic PVC.
[0003] The raw materials for producing calcium carbide are lime and coke mixed in a certain proportion, and the production equipment is an electric calcium carbide furnace. The electric calcium carbide furnace is equipped with three self-baking electrodes made of electrode paste. During production, the side wall of the electric calcium carbide furnace is sealed with mud. After power is supplied to the self-baking electrodes, a large amount of resistance heat can be generated to heat and melt the raw materials to form liquid calcium carbide.
[0004] When encountering situations such as starting a new furnace, restarting the furnace after the electric calcium carbide furnace is shut down for maintenance, etc., during the start-up process of the electric calcium carbide furnace, in order to prevent the electric calcium carbide furnace from heating up too fast and unevenly and avoid the occurrence of accidents such as burning out the self-baking electrodes, the self-baking electrodes and the low-voltage side of the transformer need to adopt a star connection wiring method to allow the self-baking electrodes to heat up evenly at a low voltage and low current state. During this stage, the single-furnace smelting time can be extended for calcium carbide production. When the temperature in the electric calcium carbide furnace can be stabilized at 1900-2300 °C, then use the star-delta conversion switch to change the wiring method to delta connection, and normal production can be carried out.
[0005] A burner is arranged outside the electric calcium carbide furnace. The main structure of the burner is a carbon rod. An insulating handle is installed at the rear of the carbon rod for staff to control. A conductive copper row (switch) is connected to the side of the carbon rod. The conductive copper row is connected to the low-voltage side of the corresponding transformer of the electric calcium carbide furnace through a copper pipe. After the conductive copper row is switched on, the carbon rod of the burner is electrified to generate an arc. The staff controls the burner through the insulating handle, and can use the arc to burn through the furnace eye of the electric calcium carbide furnace, and discharge the liquid calcium carbide from the furnace eye.
[0006] However, due to the star connection wiring method adopted during the start-up process of the electric calcium carbide furnace, the transformer can only provide a very small voltage and current. The existing burner lacks a connection structure that can be connected to other delta-connected electric calcium carbide furnaces and can only be powered by the corresponding electric calcium carbide furnace transformer, resulting in the arc generated by the burner during the start-up stage being difficult to burn through the furnace eye, and the liquid calcium carbide often cannot flow out. This will not only reduce the tapping efficiency, hinder production, but also lead to furnace start-up failure and furnace condition deterioration in severe cases, and is also prone to major process and safety accidents. Content of the Utility Model
[0007] The purpose of the utility model is to solve the problem that in the existing electric calcium carbide furnace, the voltage and current provided by the transformer during the start-up process are small, and it is easy for the arc generated by the corresponding burner to be difficult to burn through the furnace eye.
[0008] For the above purposes, the utility model provides an electric calcium carbide furnace system sharing a burner, which includes at least two electric calcium carbide furnaces 1. Each electric calcium carbide furnace 1 is respectively provided with a transformer 11, a self-baking electrode 12, a star-delta conversion switch, and a burner 2.
[0009] The connection mode between the low-voltage side of the transformer 11 and the self-baking electrode 12 is selected from one of star connection and delta connection. The star-delta conversion switch is used to switch the connection mode between the low-voltage side of the transformer 11 and the self-baking electrode 12 to the other.
[0010] The burner 2 includes a carbon rod 21. An insulating handle 22 for staff operation is arranged at the rear side of the carbon rod 21. A conductive copper bar 23 capable of opening and closing is connected to the side of the carbon rod 21.
[0011] The electric calcium carbide furnace system sharing a burner further includes: a first copper bar connector 4a, a second copper bar connector 4b, and a copper pipe.
[0012] The first copper bar connector 4a and the second copper bar connector 4b have the same structure and respectively include a first copper bar plate 41 and a second copper bar plate 42. The first copper bar plate 41 and the second copper bar plate 42 are connected when subjected to an external force.
[0013] The copper pipe includes: a first main pipe 301, a second main pipe 302, a first branch pipe 303, a second branch pipe 304, and a main pipe 305.
[0014] The first main pipe 301 is connected to the transformer 11 of one of the electric calcium carbide furnaces 1 and the first copper bar plate 41 of the first copper bar connector 4a.
[0015] The second main pipe 302 is connected to the second copper bar plate 42 of the first copper bar connector 4a and the conductive copper bar 23.
[0016] The first branch pipe 303 is connected to the first main pipe 301 and the first copper bar plate 41 of the second copper bar connector 4b.
[0017] The second branch pipe 304 is connected to the second copper bar plate 42 of the second copper bar connector 4b and the main pipe 305.
[0018] Therefore, when one of the electric calcium carbide furnaces 1 is started up, in the star connection state and under low-load production of the electric calcium carbide furnace, while other electric calcium carbide furnaces are in the normal production state, it is only necessary to connect the first copper bar connector, the second copper bar connector of the star-connected electric calcium carbide furnace and the second copper bar connector of the normally produced electric calcium carbide furnace at the same time, so that the transformer of the normally produced electric calcium carbide furnace can supply power to the burner of the star-connected electric calcium carbide furnace, and make the burner generate a normal arc, then the burn-through operation can be carried out on the star-connected electric calcium carbide furnace.
[0019] Preferably, the first copper bar plate 41 and the second copper bar plate 42 are slender straight plates.
[0020] The lower end of the first copper busbar 41 is fixedly connected to the wall or the ground through a fixing member 410.
[0021] The lower end of the second copper busbar 42 can be attached to the lower end of the first copper busbar 41 under the action of an external force to form a circuit.
[0022] When installing the above structure, it is not necessary to strictly align the ends of the copper pipes, and the installation process is simple. And during use, the staff only needs to apply force to the lower end of the second copper busbar 42 to temporarily connect the copper pipes, which is very convenient.
[0023] Preferably, a cross beam 43 is provided on the side of the second copper busbar 42 away from the first copper busbar 41, and both ends of the cross beam are fixedly connected to the fixing member 410 through support rods 432.
[0024] A threaded hole 431 is provided in the middle of the cross beam 43, and the center line of the threaded hole 431 is perpendicular to the second copper busbar 42.
[0025] A lead screw 44 is threadedly connected in the threaded hole 431. One end of the lead screw 44 is rotatably connected to the second copper busbar 42, and an insulating handwheel 441 is fixedly provided at the other end of the lead screw 44.
[0026] When the staff rotates the insulating handwheel 441 clockwise to make the lead screw 44 move backward, a backward pressure can be provided to the lower end of the second copper busbar 42, so that the lower end of the second copper busbar 42 is attached to the lower end of the first copper busbar 41 to form a circuit.
[0027] When the staff rotates the insulating handwheel 441 counterclockwise, the lead screw 44 can be made to move forward, so that the lower end of the second copper busbar 42 is separated from the lower end of the first copper busbar 41, and the connection can be disconnected.
[0028] Preferably, a circular block 4402 is provided at the end of the lead screw 44 away from the insulating handwheel 441, and an annular groove 4401 is provided on the front side of the circular block 4402.
[0029] The lead screw 44 is rotatably connected to the second copper busbar 42 through a connecting member 422.
[0030] The connecting member 422 includes a first connecting plate 4221 and two second connecting plates 4222.
[0031] A circular groove 4404 is provided in the middle of the front side of the first connecting plate 4221. The shape of the circular groove 4404 matches the shape of the circular block 4402, and the circular block 4402 is installed in the circular groove 4404.
[0032] Semicircular grooves 4403 are respectively provided on the opposite side parts of the two second connecting plates 4222. The shape of the semicircular grooves 4403 matches the shape of the annular groove 4401.
[0033] The lower end of the second copper busbar 42 is fixedly connected to the rear side of the first connecting plate 4221. Two second connecting plates 4222 are fixedly connected to the front side of the first connecting plate 4221. The annular groove 4401 of the lead screw 44 is partially clamped in the semi-circular groove 4403.
[0034] Therefore, the inner diameter of the circular groove 4404 is equal to the outer diameter of the circular block 4402. The circular block 4402 can rotate freely within the circular groove 4404 and the rotating shaft will not deviate.
[0035] By combining and splicing the left and right second connecting plates 4222, the semi-circular grooves 4403 can form a circular hole with a diameter equal to the outer diameter of the lead screw 44 at the annular groove 4401 part, enabling the lead screw 44 to rotate and the rotating shaft not to deviate. Moreover, when the lead screw 44 moves forward, it can also pull the lower side of the second copper busbar 42 forward.
[0036] Preferably, the connecting member 422 further includes a third connecting plate 4223 fixedly connected to the front side of the second connecting plate 4222. A through hole 4405 is provided in the middle of the third connecting plate 4223, and the lead screw 44 passes through the through hole 4405.
[0037] Preferably, a fixing block 411 is provided on the lower end of the first copper busbar 41 near the side of the second copper busbar 42. A moving block 421 is provided on the lower end of the second copper busbar 42 near the side of the first copper busbar 41.
[0038] The shapes of the opposite end faces of the fixing block 411 and the moving block 421 match, that is, the end faces of the fixing block 411 and the moving block 421 are flat and can be closely attached, facilitating the formation of a path.
[0039] Preferably, collar rings 40 are respectively provided at the upper ends of the first copper busbar 41 and the second copper busbar 42. The collar rings 40 are locked by bolts. The first copper busbar 41 and the second copper busbar 42 are respectively fixedly connected to the copper pipe through the collar rings 40. The collar ring 40 structure is not only convenient for installation, but also can ensure that the inner surface of the sleeve is closely attached to the outer surface of the copper pipe by locking with bolts, ensuring that a path can be formed using the first copper busbar 41 and the second copper busbar 42.
[0040] Preferably, a bending plate 401 is provided between the first copper busbar 41 and the second copper busbar 42 and the corresponding collar rings 40. The function of the bending plate 401 is to adjust the first copper busbar 41 and the second copper busbar 42 to maintain an appropriate distance, so that their lower ends can be separated and can also be attached to each other under external force.
[0041] The utility model is convenient to manufacture and has a clever structure. It uses two carbide furnace burner devices connected and shared complementarily. When a new carbide furnace is started or operates at a low load, it is connected to the burner of an adjacent high-load and high-voltage carbide furnace to burn through the furnace eye for tapping. It can quickly burn through the furnace eye of the burner of the newly started carbide furnace, which is beneficial to maintaining the furnace eye and quickly resuming production. It can prevent the deterioration of the furnace condition and the occurrence of process accidents and safety accidents. It can not only improve the tapping efficiency but also ensure the safe and stable operation of the carbide furnace and avoid increasing the production cost of calcium carbide.
[0042] During the use process, the staff can reasonably use and freely switch the power supply of the burner according to the furnace condition, truly improving the production efficiency, ensuring the burning-through effect, achieving the best economic operation, which is beneficial for production enterprises to be frugal, reducing the production cost of calcium carbide, and ensuring the safe, stable and long-term operation of the carbide furnace. The utility model is convenient to manufacture and has a clever structure, and is suitable for popularization and use in this field. BRIEF DESCRIPTION OF THE DRAWINGS
[0043] Figure 1 It is a structural schematic diagram of a single carbide furnace and a burner in a carbide furnace system with a shared burner
[0044] Figure 2 It is an overall structural schematic diagram of a carbide furnace system with a shared burner;
[0045] Figure 3 It is a structural schematic diagram of a first copper bar connector and a second copper bar connector;
[0046] Figure 4 It is along Figure 3 The sectional view taken along A-A in;
[0047] Figure 5 It is an exploded schematic diagram of the connector. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0048] The following will elaborate on the embodiments of the present utility model in detail with reference to the accompanying drawings. The following description is a specific implementation of the claims of the present utility model. Embodiment
[0049] Figure 1 It shows the structure of a single carbide furnace and a burner in a carbide furnace system with a shared burner, Figure 2 It shows an overall structural schematic diagram of a carbide furnace system with a shared burner.
[0050] Combined with Figure 1 、 2 It can be seen that the carbide furnace system with a shared burner includes two adjacent carbide furnaces 1, and each carbide furnace 1 is respectively provided with a transformer 11, a self-baking electrode 12, a star-delta conversion switch (not shown in the figure), and a burner 2.
[0051] The connection method between the low-voltage side of the transformer 11 and the self-baking electrode 12 is selected from one of the star connection and the delta connection. The star-delta conversion switch is used to switch the connection method between the low-voltage side of the transformer 11 and the self-baking electrode 12 to the other. That is, when starting the calcium carbide furnace, the star-delta conversion switch can be used to switch the connection method between the low-voltage side of the transformer 11 and the self-baking electrode 12 to the star connection, so that the calcium carbide furnace is in a low-load state, and the temperature is slowly increased with lower current and voltage.
[0052] Since the star connection start-up method of the calcium carbide furnace, the star-delta conversion switch, etc. are prior arts, for the specific wiring method, reference can be made to "Star Connection Temperature Rise Start-up Method" (Liu Chengcai, Shanxi Chemical Industry, 1982(3), 1982-03-003), and no detailed description will be given here.
[0053] As Figure 1 shown, the burner 2 includes a carbon rod 21. An insulating handle 22 for the operator is arranged at the rear side of the carbon rod 21. A switchable-on-and-off conductive copper bar 23 is connected to the side of the carbon rod 21 by a conductive bus bar 24. After the conductive copper bar 23 is switched on, an electric arc can be generated at the front side of the carbon rod 21, and the operator can operate the insulating handle to burn through the furnace eye of the calcium carbide furnace 1, so that the liquid calcium carbide therein flows into the discharge trolley 13.
[0054] Combined Figure 1 with Figure 2 seen, the calcium carbide furnace system sharing the burner further includes: a copper pipe, a first copper bar connector 4a, and a second copper bar connector 4b.
[0055] The first copper bar connector 4a and the second copper bar connector 4b have the same structure, and each includes a first copper bar plate 41 and a second copper bar plate 42, which are connected when subjected to an external force. For the specific description of the structures of the first copper bar connector 4a and the second copper bar connector 4b, reference can be made to the part combined with Figures 3 - 5 below.
[0056] Refer to Figure 1 , Figure 2 , the copper pipe includes: a first main pipe 301, a second main pipe 302, a first branch pipe 303, a second branch pipe 304 respectively arranged for each calcium carbide furnace, and a main pipe 305 shared by the system.
[0057] As Figure 1 shown, the first main pipe 301 is connected to the transformer 11 of one of the calcium carbide furnaces 1 and the first copper bar plate 41 of the first copper bar connector 4a. The second main pipe 302 is connected to the second copper bar plate 42 of the first copper bar connector 4a and the conductive copper bar 23. That is, when the first copper bar connector 4a is connected, Figure 1 the transformer 11 of the calcium carbide furnace 1 in
[0058] As Figure 1As shown, the first branch pipe 303 connects the first main pipe 301 and the first copper busbar plate 41 of the second copper busbar connector 4b. The second branch pipe 304 connects the second copper busbar plate 42 of the second copper busbar connector 4b and the main pipe 305. That is, when the second copper busbar connector 4b is connected, Figure 1 the voltage provided by the transformer 11 of the calcium carbide furnace 1 in
[0059] Figure 3 shows the structures of the first copper busbar connector and the second copper busbar connector. Figure 4 It is Figure 3 a sectional view taken along A-A in Figure 5 and is an exploded view of the connector. The following will describe the specific structures of the first copper busbar connector and the second copper busbar connector in combination with Figures 3 - 5 .
[0060] As Figure 3 shown, the first copper busbar plate 41 and the second copper busbar plate 42 are slender straight plates.
[0061] The lower end of the first copper busbar plate 41 is fixedly connected to the wall or the ground through a fixing member 410.
[0062] The lower end of the second copper busbar plate 42 can be attached to the lower end of the first copper busbar plate 41 under the action of an external force to form a path.
[0063] Combined with Figure 3 and 4 , a cross beam 43 is provided on the side of the second copper busbar plate 42 away from the first copper busbar plate 41, and both ends of the cross beam are fixedly connected to the fixing member 410 through support rods 432.
[0064] A threaded hole 431 is provided in the middle of the cross beam 43, and the center line of the threaded hole 431 is perpendicular to the second copper busbar plate 42.
[0065] A lead screw 44 is threadedly connected in the threaded hole 431. One end of the lead screw 44 is rotatably connected to the second copper busbar plate 42, and an insulating handwheel 441 is fixedly provided at the other end of the lead screw 44.
[0066] Combined with Figure 4 and 5 , a circular block 4402 is provided at the end of the lead screw 44 away from the insulating handwheel 441, and an annular groove 4401 is provided on the front side of the circular block 4402.
[0067] The lead screw 44 is rotatably connected to the second copper busbar plate 42 through a connecting member 422.
[0068] The above-mentioned connecting member 422 includes a first connecting plate 4221, two second connecting plates 4222, and a third connecting plate 4223.
[0069] AsFigure 5 As shown, a circular groove 4404 is provided in the middle of the front side of the first connecting plate 4221. The circular groove 4404 matches the shape of the circular clamping block 4402, and the circular clamping block 4402 is installed in the circular groove 4404.
[0070] The above "matching" means that the inner diameter of the circular groove 4404 is equal to the outer diameter of the circular clamping block 4402. The circular clamping block 4402 can rotate freely in the circular groove 4404 and the rotation axis will not shift.
[0071] As Figure 5 shown, semi-circular grooves 4403 are respectively provided on the opposite side parts of the two second connecting plates 4222. The semi-circular grooves 4403 match the shape of the annular groove 4401. And the rear side surface of the first connecting plate 4221 is fixedly connected to the lower end of the second copper row plate 42, and the two second connecting plates 4222 are fixedly connected to the front side surface of the first connecting plate 4221. The annular groove 4401 part of the lead screw 44 is clamped in the semi-circular groove 4403.
[0072] The above "matching" means that after the left and right second connecting plates 4222 are combined, the semi-circular grooves 4403 can form a circular hole with a hole diameter equal to the outer diameter of the annular groove 4401 part of the lead screw 44, so that the lead screw 44 can rotate and the rotation axis does not shift. And when the lead screw 44 moves forward, it can also pull the lower side of the second copper row plate 42 forward.
[0073] As Figure 5 shown, the third connecting plate 4223 is fixedly connected to the front side of the second connecting plate 4222. A through hole 4405 is provided in the middle of the third connecting plate 4223, and the lead screw 44 passes through the through hole 4405.
[0074] As Figure 4 shown, a fixing block 411 is provided on one side of the lower end of the first copper row plate 41 close to the second copper row plate 42, and a moving block 421 is provided on one side of the lower end of the second copper row plate 42 close to the first copper row plate 41. The shapes of the opposite end faces of the fixing block 411 and the moving block 421 match.
[0075] The above "matching" means that the end faces of the fixing block 411 and the moving block 421 are flat and can be closely attached to facilitate the formation of a path.
[0076] Refer to Figure 3 、 Figure 4 , collar rings 40 are respectively provided at the upper ends of the first copper row plate 41 and the second copper row plate 42. As Figure 4 shown, the collar ring 40 is composed of a front half ring 40A and a rear half ring 40B. The first copper row plate 41 and the second copper row plate 42 are respectively fixedly connected to the copper pipe through the collar ring 40, that is, the collar ring 40 is sleeved outside the copper pipe and locked by bolts.
[0077] See Figure 4 , a "Z"-shaped bending plate 401 is provided between the first copper busbar plate 41 and the second copper busbar plate 42 and the corresponding collar 40. The function of the bending plate 401 is to adjust the first copper busbar plate 41 and the second copper busbar plate 42 to maintain an appropriate distance, so that the lower ends of the two can be separated and can be fitted together under the action of an external force.
[0078] As Figure 3 , 4 shown, in this embodiment, two collars 40 are respectively provided on the upper sides of the first copper busbar plates 41 and the second copper busbar plates 42, and a square copper plate 402 for installation is welded to the lower side of each collar 40. The square copper plate 402 is fixed to the upper part of the bending plate 401 through a first bolt 4011. The upper ends of the first copper busbar plate 41 and the second copper busbar plate 42 are respectively fixed to the lower part of the bending plate 401 through a second bolt 4101.
[0079] Therefore, the usage methods of the first copper busbar connector 4a and the second copper busbar connector 4b are as follows:
[0080] The operator rotates the insulating handwheel 441 clockwise, so that the lead screw 44 moves backward, and then a backward pressure can be provided to the lower end of the second copper busbar plate 42, so that the lower end of the second copper busbar plate 42 fits with the lower end of the first copper busbar plate 41 to form a circuit.
[0081] The operator rotates the insulating handwheel 441 counterclockwise, then the lead screw 44 can be made to move forward, so that the lower end of the second copper busbar plate 42 is separated from the lower end of the first copper busbar plate 41, and the connection can be disconnected.
[0082] The following combines Figure 2 the overall structure of the calcium carbide furnace system with a shared piercer shown to illustrate the usage method of the calcium carbide furnace system with a shared piercer.
[0083] When the calcium carbide furnaces 1A and 1B are in normal production, that is, when the transformers 11A and 11B are both in delta connection and the calcium carbide furnaces are in high-load production, the operator can manually rotate the insulating handwheels in the first copper busbar connectors 4aA and 4aB respectively, so that the first copper busbar connectors 4aA and 4aB are connected, and normal arcs can be generated in the piercers 2A and 2B respectively, and then the piercing operation can be carried out.
[0084] When the calcium carbide furnace 1A is starting up, in the star connection state and in low-load production, while the calcium carbide furnace 1B is in normal production, 3 operators need to be arranged to rotate the first copper busbar connector 4aA, the second copper busbar connector 4bA and the second copper busbar connector 4bB simultaneously, so that the transformer 11B can supply power to the piercer 2A, and a normal arc can be generated in the piercer 2A, and then the piercing operation can be carried out on the calcium carbide furnace 1A.
[0085] Similarly, when the electric calcium carbide furnace 1B is started up, in the star connection state, and the electric calcium carbide furnace is in low-load production, while the electric calcium carbide furnace 1A is in normal production, the usage method is similar to the description in the previous paragraph and is omitted here.
[0086] The utility model utilizes the connection and complementary sharing of the burn-through devices of two electric calcium carbide furnaces. When a new electric calcium carbide furnace is started up or in low load, it is connected to the burn-through device of the adjacent high-load and high-voltage electric calcium carbide furnace for burning the furnace eye and tapping. It can realize the rapid burning through of the furnace eye by the burn-through device of the newly started electric calcium carbide furnace, which is beneficial to maintaining the furnace eye and quickly resuming production. It can prevent the deterioration of the furnace condition and the occurrence of process accidents and safety accidents. It can not only improve the tapping efficiency but also ensure the safe and stable operation of the electric calcium carbide furnace, avoiding the increase of the production cost of calcium carbide.
[0087] During the use process, the staff can reasonably use and freely switch the power supply of the burn-through device according to the furnace condition, truly improving the production efficiency, ensuring the burn-through effect, achieving the best economic operation, which is beneficial for the production enterprise to be frugal, reducing the production cost of calcium carbide, and ensuring the safe, stable and long-term operation of the electric calcium carbide furnace. The utility model is convenient to manufacture, has a clever structure, and is suitable for popularization and use in this field.
Claims
1. Calcium carbide furnace system with a shared burner, comprising at least two calcium carbide furnaces (1), each of the calcium carbide furnaces (1) is respectively provided with a transformer (11), a self-baking electrode (12), a star-delta conversion switch, and a burner (2). The connection mode between the low-voltage side of the transformer (11) and the self-baking electrode (12) is selected from one of star connection and delta connection, and the star-delta conversion switch is used to switch the connection mode between the low-voltage side of the transformer (11) and the self-baking electrode (12) to the other one. The burner (2) includes a carbon rod (21), an insulating handle (22) for staff operation is arranged at the rear side of the carbon rod (21), and a conductive copper bar (23) capable of opening and closing is connected to the side of the carbon rod (21). It is characterized in that The calcium carbide furnace system with a shared burner further includes: a first copper bar connector (4a), a second copper bar connector (4b), and a copper pipe. The first copper bar connector (4a) and the second copper bar connector (4b) have the same structure, and each includes a first copper bar plate (41) and a second copper bar plate (42), and the first copper bar plate (41) and the second copper bar plate (42) are connected when subjected to an external force. The copper pipe includes: a first main pipe (301), a second main pipe (302), a first branch pipe (303), a second branch pipe (304), and a main pipe (305). The first main pipe (301) is connected to the first copper bar plate (41) of the first copper bar connector (4a) and the transformer (11) of one of the calcium carbide furnaces (1). The second main pipe (302) is connected to the second copper bar plate (42) of the first copper bar connector (4a) and the conductive copper bar (23). The first branch pipe (303) is connected to the first copper bar plate (41) of the first copper bar connector (4a) and the first copper bar plate (41) of the second copper bar connector (4b). The second branch pipe (304) is connected to the second copper bar plate (42) of the second copper bar connector (4b) and the main pipe (305).
2. The calcium carbide furnace system with a shared burner according to claim 1, characterized in that The first copper bar plate (41) and the second copper bar plate (42) are slender straight plates. The lower end of the first copper bar plate (41) is fixedly connected to the wall or the ground through a fixing member (410). The lower end of the second copper bar plate (42) can be attached to the lower end of the first copper bar plate (41) under the action of an external force to form a path.
3. The calcium carbide furnace system with a shared burner according to claim 2, characterized in that A cross beam (43) is arranged on the side of the second copper bar plate (42) away from the first copper bar plate (41), and both ends of the cross beam are fixedly connected to the fixing member (410) through support rods (432). A threaded hole (431) is arranged in the middle of the cross beam (43), and the center line of the threaded hole (431) is perpendicular to the second copper bar plate (42). A lead screw (44) is threadedly connected in the threaded hole (431), one end of the lead screw (44) is rotatably connected to the second copper bar plate (42), and an insulating handwheel (441) is fixedly arranged at the other end of the lead screw (44).
4. The calcium carbide furnace system with a shared piercing burner according to claim 3, characterized in that, One end of the lead screw (44) far away from the insulating handwheel (441) is provided with a circular block (4402), and an annular groove (4401) is arranged on the front side of the circular block (4402). The lead screw (44) is rotatably connected with the second copper row plate (42) through a connecting piece (422). The connecting piece (422) includes a first connecting plate (4221) and two second connecting plates (4222). A circular groove (4404) is arranged in the middle of the front side of the first connecting plate (4221). The shape of the circular groove (4404) matches that of the circular block (4402), and the circular block (4402) is installed in the circular groove (4404). Semicircular grooves (4403) are respectively arranged on the opposite side parts of the two second connecting plates (4222). The shape of the semicircular grooves (4403) matches that of the annular groove (4401). The rear side of the first connecting plate (4221) is fixedly connected to the lower end of the second copper row plate (42). The two second connecting plates (4222) are fixedly connected to the front side of the first connecting plate (4221). The part of the annular groove (4401) of the lead screw (44) is clamped in the semicircular groove (4403).
5. The calcium carbide furnace system of the shared piercer according to claim 4, characterized in that The connecting piece (422) further includes a third connecting plate (4223) fixedly connected to the front side of the second connecting plate (4222). A through hole (4405) is arranged in the middle of the third connecting plate (4223), and the lead screw (44) passes through the through hole (4405).
6. The calcium carbide furnace system of the shared piercer according to any one of claims 1 to 5, characterized in that A fixing block (411) is arranged on one side of the lower end of the first copper row plate (41) close to the second copper row plate (42). A moving block (421) is arranged on one side of the lower end of the second copper row plate (42) close to the first copper row plate (41). The shapes of the opposite end faces of the fixing block (411) and the moving block (421) match each other.
7. The calcium carbide furnace system with a shared piercing burner according to any one of claims 1 to 5, characterized in that, Collars (40) are respectively arranged at the upper ends of the first copper row plate (41) and the second copper row plate (42). The collars (40) are locked by bolts. The first copper row plate (41) and the second copper row plate (42) are respectively fixedly connected to the copper pipe through the collars (40).
8. The calcium carbide furnace system with a shared piercing burner according to claim 7, characterized in that, A bending plate (401) is arranged between the first copper row plate (41) and the second copper row plate (42) and the corresponding collar (40).