Economical compensation connection system for industrial silicon furnace

Abstract

The utility model discloses an economical compensation connection system for an industrial silicon furnace, which relates to the field of industrial silicon smelting, and is characterized in that a water-through flexible cable is wound on an electrode for cooling, a compensation copper pipe is connected with a busbar for converging and distributing current after being continuously connected with the water-through flexible cable, and is directly cut off after being connected with the busbar, so that the structure is simplified. And four copper pipes which are arranged in a rectangular shape and two crossed copper pipes at the upper layer are led out from the compensation cabinet and are connected to the busbar. A pipe made of a non-magnetic material is communicated with return water to form circulation, a complex cooling water circulation loop is arranged, and efficient cooling is achieved through connection of an insulating rubber pipe. A quick-release connecting structure with a sealing washer is adopted between the busbar and the compensation copper pipe and between the busbar and the copper pipe, maintenance is convenient, and liquid leakage is prevented. Compared with the prior art, the system has the advantages that a traditional electrode side busbar and a water cooling cable are omitted, the cost is greatly reduced, the water leakage risk is reduced, the production stability and safety are improved, and the compensation effect and the cooling efficiency are improved.

Description

Technical Field

[0001] This utility model relates to the field of industrial silicon smelting, specifically to an economical compensation connection system for industrial silicon furnaces. Background Technology

[0002] In the normal operation of industrial silicon furnaces, reactive power compensation is crucial to minimize reactive power consumption and maximize transformer output. The most common 33000KVA industrial silicon furnaces on the market are typically designed with a furnace capacity of 45360kvar (three-phase electrodes) and a phase capacity of 15120kvar. To reduce the heat generated by the compensation current, water cooling is usually employed, with two water lines per phase electrode and a circulating water flow rate of 10m³ / hour per line. This results in numerous abnormal water line interfaces and a high risk of leakage. Traditional compensation systems use a busbar on the electrode side, with the compensation water pipes coming from the compensation cabinet and connected to the busbar via water-cooled flexible cables. The busbar moves up and down with the electrodes. When the furnace impedance changes, the electrode position moves up and down to adjust the work done, which in turn moves the compensation water-cooled flexible cables, increasing the likelihood of leakage from these cables. If the leakage is too large, it can enter the furnace and cause a liquid phase explosion, which requires the furnace to be shut down for at least 2 hours to deal with it. This not only affects production capacity, but also increases the operational risks for employees, as there is a risk of falling from heights and being struck by objects.

[0003] In conclusion, the development of a new type of compensation connection system for industrial silicon furnaces is urgently needed. This system can not only effectively solve the pain points of existing technologies, but also improve the overall operating efficiency and economic benefits of industrial silicon furnaces, and promote the sustainable development of the industrial silicon production industry. Utility Model Content

[0004] The purpose of this utility model is to provide an economical compensation connection system for industrial silicon furnaces. The system uses water-cooled flexible cables wound around two sets of electrodes, and then connects to a busbar that serves to collect and distribute current via compensation copper pipes. Four compensation copper pipes arranged in a rectangular pattern with two intersecting pipes at the top are led out from the compensation cabinet and connected to the busbar. The system also uses non-magnetic pipes to connect to the return water, thereby achieving efficient and economical reactive power compensation and reducing operating risks and costs.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An economical compensation connection system for an industrial silicon furnace includes two sets of electrodes. The system is characterized in that several sets of water-conducting flexible cables are wound around the two sets of electrodes. The water-conducting flexible cables are connected to compensation copper pipes and connected to a manifold. The compensation copper pipes are directly cut off after being connected to the manifold. A connection hole is provided at the top of the other end of the manifold to connect to the compensation cabinet.

[0007] The compensation cabinet is equipped with four compensation copper tubes, which are arranged in a rectangular shape and led out from the compensation cabinet to the busbar. The two upper compensation copper tubes are arranged in a cross pattern so that the diagonal compensation copper tubes are connected to the same electrode.

[0008] The compensating copper pipe and water-carrying flexible cable in the system are insulated and protected using mica tape, fiberglass tape, and insulating varnish.

[0009] Two compensating copper pipes connected to the same electrode are connected to the return water at the bottom through a non-magnetic pipe, forming a return water passage.

[0010] The system is equipped with a cooling water circulation loop. The cooling water enters from the upper layer of the compensation cabinet, reaches the electrode, and then returns to the lower diagonal position through another compensation copper pipe. It is then connected to the lower water inlet through an insulating rubber tube, reaches the other electrode, and then returns to the upper opposite outlet through another compensation copper pipe.

[0011] The busbar is connected to the compensating copper pipe and the water-carrying flexible cable using a quick-release connection structure and is fitted with a sealing gasket.

[0012] The system is used in a 33000KVA industrial silicon furnace, with a compensation capacity of 45360kvar per furnace and a capacity of 15120kvar per phase for the three-phase electrodes.

[0013] During operation, the two sets of electrodes perform reactive power compensation, generating a large amount of heat. The water-cooled flexible cable wound around the electrodes provides cooling, while the connecting compensation copper pipes transmit the compensation current. The connected busbar converges and distributes the current, and the compensation copper pipes are disconnected after connecting to the busbar, simplifying the structure. The compensation cabinet, as the core control unit, connects to the busbar through a top connection hole. Its four rectangularly arranged compensation copper pipes, with the upper two crossing each other, connect diagonally to the same electrode, optimizing current distribution. The compensation copper pipes and water-cooled flexible cables in the system are insulated with mica tape, fiberglass tape, and insulating varnish. The bottoms of the two compensation copper pipes connected to the same electrode are connected to return water via non-magnetic tubing, forming a circulation. Cooling water enters from the upper rear of the compensation cabinet, circulates through a complex path to fully cool the two sets of electrodes, and then returns. The quick-release connection structure between the busbar, compensation copper pipes, and water-cooled flexible cables facilitates maintenance, and sealing gaskets prevent liquid leakage. The entire system operates collaboratively, achieving efficient and economical reactive power compensation for industrial silicon furnaces, reducing operating risks and costs.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] The traditional electrode-side busbars and water-cooled cables were eliminated, saving 24 water-cooled cables per furnace.

[0016] The busbar is moved forward to the transformer outlet, and the compensation copper pipe is directly cut off after connection. This reduces the risk of water leakage caused by the movement of the electrodes and the water-carrying cable, reduces the risk of liquid phase explosion in the furnace caused by water leakage, reduces the number of furnace shutdowns, improves the stability and safety of production, and ensures production capacity.

[0017] The compensating copper conduit and the water-carrying flexible cable are insulated with mica tape, fiberglass tape, and insulating varnish, resulting in more reliable insulation performance and effectively preventing current leakage. The unique cross-arrangement of the copper conduit optimizes current distribution and improves the compensation effect.

[0018] The non-magnetic pipes are connected to the return water, and the complex cooling water circulation loop design ensures cooling effect while avoiding interference with current transmission, thus improving cooling efficiency and reducing water consumption.

[0019] The quick-release connection structure between the busbar, compensating copper pipe, and water-carrying flexible cable, along with sealing gaskets, allows for rapid disassembly and installation compared to traditional connection methods during equipment maintenance, repair, or component replacement. This significantly improves work efficiency and effectively prevents liquid leakage. Attached Figure Description

[0020] Figure 1 This is a front view of the connection method of an economical compensation connection system for an industrial silicon furnace according to this utility model;

[0021] Figure 2 This is a top view of the connection method of an economical compensation connection system for an industrial silicon furnace according to this utility model;

[0022] Figure 3 This is a right view of the connection method of an economical compensation connection system for an industrial silicon furnace according to this utility model;

[0023] In the diagram: 1. Electrode, 2. Water-carrying copper pipe, 3. Water-carrying flexible cable, 4. Busbar, 5. Compensation cabinet, 6. Compensation copper pipe. Detailed Implementation

[0024] The technical solutions of the present invention will now be described in detail with reference to the accompanying drawings of the embodiments.

[0025] like Figure 1-3 As shown, an economical compensation connection system for an industrial silicon furnace includes two sets of electrodes 1. The system is characterized in that several sets of water-conducting copper pipes 2 are wound around the two sets of electrodes 1. The water-conducting flexible cable 3 is connected to the compensation copper pipes 6 and connected to the manifold 4. The compensation copper pipes 6 are directly cut off after being connected to the manifold 4. A connection hole is provided at the top of the other end of the manifold 4 to connect to the compensation cabinet 5.

[0026] The compensation cabinet 5 is equipped with 4 compensation copper tubes 6, and the 4 compensation copper tubes 6 are rectangular and lead out from the compensation cabinet 5 to the busbar 4. The upper 2 compensation copper tubes are arranged in a cross pattern so that the diagonal compensation copper tubes 6 are connected to the same electrode 1.

[0027] The water-carrying flexible cable 3 and the compensating copper pipe 6 in the system are insulated and protected by mica tape, fiberglass tape and insulating varnish.

[0028] Two flexible water cables 3 connected to the same electrode 1 are connected to the return water at the bottom through a non-magnetic pipe, forming a return water passage.

[0029] The system is equipped with a cooling water circulation loop. The cooling water enters from the upper layer of the compensation cabinet 5 at the rear, reaches electrode 1, and then returns to the lower diagonal position through another compensation copper pipe 6. It is connected to the lower water inlet through an insulating rubber tube, and then reaches the other electrode 1 and returns to the upper opposite outlet through another compensation copper pipe 6.

[0030] The manifold 4 is connected to the water-carrying flexible cable 3 and the compensating copper pipe 6 by a quick-release connection structure and is fitted with a sealing gasket.

[0031] The system is used in a 33000KVA industrial silicon furnace, with a compensation capacity of 45360kvar per furnace and a capacity of 15120kvar per phase for the three-phase electrodes.

[0032] Several sets of water-carrying copper pipes 2 are tightly wound around electrode 1. Water-carrying copper pipes 2 are then connected to water-carrying flexible cables 3 and connected to a busbar 4 located at the branch point on the transformer outlet side. Compensating copper pipes 6 are connected to busbar 4 and then directly disconnected. A connection hole is opened at the top of the other end of busbar 4 to connect to compensation cabinet 5. Four compensating copper pipes 6 arranged in a rectangular pattern are led out from compensation cabinet 5. The upper two compensating copper pipes 6 are arranged crosswise, so that diagonal compensating copper pipes 6 are connected to the same electrode 1. Mica tape, fiberglass tape, and insulating varnish are used to insulate and protect the water-carrying flexible cables 3 and compensating copper pipes 6 in the system. Two water-carrying flexible cables 3 connected to the same electrode 1 are connected at the bottom by a non-magnetic pipe 7 to form a return water passage; a cooling water inlet is set at the upper part of the tail of the compensation cabinet 5, allowing the cooling water to flow through the electrode 1 in sequence, connect to the lower water inlet through the insulating rubber tube 8, flow through the other electrode 1 and then exit from the opposite side of the upper layer, thus constructing a cooling water circulation loop; a quick-release connection structure 9 with a sealing gasket 10 is installed between the manifold 4, the water-carrying flexible cable 3 and the compensation copper pipe 6 to ensure a tight connection and facilitate subsequent maintenance, repair or replacement of parts, thereby completing the construction and implementation of the entire system.

Claims

1. An economical compensation connection system for an industrial silicon furnace, comprising two sets of electrodes (1), characterized in that, Several sets of water-carrying copper pipes (2) are wound around the two sets of electrodes (1). The water-carrying copper pipes (2) are connected to water-carrying flexible cables (3) and connected to the busbar (4). The compensation copper pipe (6) is connected to the busbar (4) and then directly cut off. A connection hole is provided at the top of the other end of the busbar (4) to connect to the compensation cabinet (5). The compensation cabinet (5) is equipped with 4 compensation copper tubes (6), and the 4 compensation copper tubes (6) are rectangular and lead out from the compensation cabinet (5) and connected to the busbar (4). The upper 2 compensation copper tubes are arranged in a cross pattern so that the diagonal compensation copper tubes (6) are connected to the same electrode (1).

2. The economical compensation connection system for industrial silicon furnaces according to claim 1, characterized in that, Two compensating copper pipes (6) connected to the same electrode (1) are connected to the return water at the bottom through a non-magnetic pipe, forming a return water passage.

3. The economical compensation connection system for industrial silicon furnaces according to claim 2, characterized in that, The system is equipped with a cooling water circulation loop. The cooling water enters from the upper water inlet at the tail of the compensation cabinet (5), and after reaching the electrode (1), it returns to the lower diagonal position through another compensation copper pipe (6). It is connected to the lower water inlet through an insulating rubber tube, and after reaching the other electrode (1), it returns to the upper water outlet at the tail of the cabinet through another compensation copper pipe (6).

4. The economical compensation connection system for industrial silicon furnaces according to claim 1, characterized in that, The busbar (4) is connected to the compensating copper pipe (6) and the water-carrying flexible cable (3) by a quick-release connection structure and is fitted with a sealing gasket.

5. The economical compensation connection system for industrial silicon furnaces according to any one of claims 1-4, characterized in that, The system is used in a 33000KVA industrial silicon furnace, with a compensation capacity of 45360kvar per furnace and a capacity of 15120kvar per phase for the three-phase electrodes.

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