Water conduit at front end of conductive cross arm of electric furnace

Abstract

The utility model discloses an electric furnace conductive cross arm front end water diversion pipe which comprises a conductive cross arm, an oil cylinder is installed on the inner wall of the conductive cross arm, a stainless steel water diversion groove is formed in the conductive cross arm, a first water passing tank is installed at the top of one side of the conductive cross arm, and a second water passing tank is installed at the bottom of one side of the conductive cross arm. The stainless steel gutter comprises a first gutter and a second gutter. According to the utility model, stainless steel pipes with smaller sizes are replaced by the first gutter and the second gutter, and the flow areas of the water inlet pipe, the water outlet pipe and the stainless steel gutter are matched, so that the upper and lower water passing tanks at the water inlet and outlet sides and the front end of the conductive cross arm are high in water pressure, fast in water flow and large in water quantity; sludge and scrap iron can be taken away by circulating cooling water, little deposition exists, and even if the device is opened after being used for two years, only little deposition exists.

Description

Technical Field

[0001] The utility model relates to the technical field of conductive cross arms, in particular to a water inlet pipe at the front end of an electric furnace conductive cross arm. Background Technique

[0002] The electric furnace conductive cross arm is a key device for steelmaking in an electric furnace in a steel mill. It is the main device for conducting electricity and supporting and clamping electrodes during electric furnace steelmaking and molten steel refining. The outer ring material of the entire electric furnace conductive cross arm adopts a copper-steel composite steel plate. The outer copper coating is mainly for conductivity and power consumption, and the inner carbon steel layer is mainly for the strength of the conductive cross arm.

[0003] The front end clamps the electrode and is close to the electric furnace. The temperature is high, more than 1500 °C of the molten steel furnace temperature, the current is large at 100 KV, the voltage is high at 220 KV, and the vibration is large during operation. For the electric furnace conductive cross arm with stainless steel tube water inlet pipes at the upper and lower parts of the front end, there are problems of difficult manufacturing and poor cooling effect. The flow area of the water inlet and outlet pipes of the water passing pipe and the end is not matched, the water flow is slow, the water pressure on the water outlet side is low, and sludge and iron filings are easily deposited in the electric furnace conductive cross arm and the upper and lower water passing tanks at the front end, affecting the cooling effect and blocking the water passing pipe. The chuck connecting plate is burned out due to poor cooling effect, blocked water passing pipe, etc., and arc pits are formed on the contact surface between the chuck connecting plate and the electrode chuck. The chuck connecting plate is burned out and the water inlet pipe is blocked in as short as 3 months. Generally, the chuck connecting plate is burned out, arc pits are formed on the contact surface between the chuck connecting plate and the electrode chuck, and the water inlet pipe is blocked, etc. will occur in about 1 year.

[0004] In the related devices in the prior art, due to the serious mismatch between the flow areas of the water inlet and outlet pipes at the rear end of the conductive cross arm and the water inlet pipe, the water flow is not smooth, the flow rate on the water inlet side of the conductive cross arm is slow and the water pressure is high, resulting in the retention of cooling water on the water inlet side, and impurities in the cooling water will settle down. The water pressure on the water outlet side is low and the flow rate is slow, and the sludge and iron filings in the cooling water cannot be carried away by the water flow and are deposited in the conductive cross arm. As the deposition increases, the water inlet pipe orifice is even blocked, and the cooling effect becomes worse and worse, thus burning out the chuck connecting plate. Content of the Utility Model

[0005] The purpose of the utility model is to provide a water inlet pipe at the front end of an electric furnace conductive cross arm to solve the problem of easy deposition of sludge and iron filings mentioned in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A water inlet pipe at the front end of an electric furnace conductive cross arm, including a conductive cross arm, an oil cylinder is installed on the inner wall of the conductive cross arm, a stainless steel water guide groove is arranged inside the conductive cross arm, a first water passing tank is installed at the top of one side of the conductive cross arm, and a second water passing tank is installed at the bottom of one side of the conductive cross arm;

[0007] The stainless-steel water diversion trough includes a first water diversion trough and a second water diversion trough. The first water diversion trough is welded to the bottom end inside the conductive cross arm, and one end of the first water diversion trough extends into the second water tank. The second water diversion trough is welded to one side inside the conductive cross arm, and both ends of the second water diversion trough are respectively communicated with the inside of the first water tank and the second water tank.

[0008] Preferably, the shapes of the first water diversion trough and the second water diversion trough are both U-shaped.

[0009] Preferably, a first chuck connecting plate is installed on one side of the first water tank, and a second chuck connecting plate is installed on one side of the second water tank.

[0010] Preferably, a water separation plate is installed on the inner wall of the first water tank, and a water passing port is opened at one end of the first water tank.

[0011] Preferably, a water outlet pipe is installed at one end of the conductive cross arm, and a water inlet pipe is fixed at the other end of the conductive cross arm. The sizes of the water inlet pipe and the water outlet pipe are φ89*4.5mm, and the sizes of the first water diversion trough and the second water diversion trough are 110*50*2mm.

[0012] Compared with the related technology, an electric furnace conductive cross arm front-end water pipe provided by the present utility model has the following beneficial effects:

[0013] By replacing the stainless-steel pipe with the first water diversion trough and the second water diversion trough, due to the matching of the flow areas of the water inlet pipe, the water outlet pipe and the stainless-steel water diversion trough, the water pressure on the front upper and lower water tanks on the water inlet and outlet sides of the conductive cross arm is high, the water flow is fast, the water volume is large, the cooling water does not stagnate in the whole conductive cross arm, and the silt and iron filings can be taken away by the circulating cooling water, with very little deposition. Even when opened after two years of use, there is only a small amount of deposition. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a front view sectional structure schematic diagram of the present utility model;

[0015] Figure 2 is of the present utility model Figure 1 sectional structure schematic diagram at A-A in;

[0016] Figure 3 is of the present utility model Figure 1 sectional structure schematic diagram at B-B in;

[0017] Figure 4 is of the present utility model Figure 1 sectional structure schematic diagram at C-C in;

[0018] Figure 5 is a structure schematic diagram at the second water diversion trough of the present utility model;

[0019] Figure 6 This is a schematic structural view of the first water diversion trough of the present utility model.

[0020] In the figure: 1, conductive cross arm; 2, first water tank; 3, first chuck connecting plate; 4, second chuck connecting plate; 5, second water tank; 6, stainless steel water diversion trough; 7, oil cylinder; 8, first water diversion trough; 9, water separation plate; 10, water passing port; 11, water inlet pipe; 12, water outlet pipe; 13, second water diversion trough. Specific embodiments

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments; based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0022] Embodiment: Please refer to Figures 1-6 , a water inlet pipe at the front end of an electric furnace conductive cross arm, including a conductive cross arm 1, an oil cylinder 7 is installed on the inner wall of the conductive cross arm 1, a stainless steel water diversion trough 6 is arranged inside the conductive cross arm 1, a first water tank 2 is installed at the top on one side of the conductive cross arm 1, and a second water tank 5 is installed at the bottom on one side of the conductive cross arm 1;

[0023] The stainless steel water diversion trough 6 includes a first water diversion trough 8 and a second water diversion trough 13. The first water diversion trough 8 is welded to the bottom end inside the conductive cross arm 1, and one end of the first water diversion trough 8 extends into the second water tank 5. The second water diversion trough 13 is welded to one side inside the conductive cross arm 1, and both ends of the second water diversion trough 13 are respectively communicated with the inside of the first water tank 2 and the second water tank 5;

[0024] The shapes of the first water diversion trough 8 and the second water diversion trough 13 are both U-shaped;

[0025] A water outlet pipe 12 is installed at one end of the conductive cross arm 1, and a water inlet pipe 11 is fixed at the other end of the conductive cross arm 1. The sizes of the water inlet pipe 11 and the water outlet pipe 12 are φ89*4.5mm, and the sizes of the first water diversion trough 8 and the second water diversion trough 13 are 110*50*2mm;

[0026] Specifically, as Figure 1As shown in the figure, after the first water diversion tank 8 and the second water diversion tank 13 are cut according to requirements, they only need to be directly welded to the front side plate and the bottom plate, and the installation is very convenient. In contrast, in the prior art, the space for the water diversion pipe to pass through the front end of the electric furnace conductive cross arm, that is, the gap between the front end oil cylinder and the side end plate of the conductive cross arm, is generally only about 50 mm. The maximum pipe diameter of the water diversion pipe can only be φ42*4 mm, and it needs to be made into an S shape. If the bending is slightly not in place, it is very difficult to assemble.

[0027] At the same time, the flow areas of the water inlet pipe 11 and the water outlet pipe 12 are 5024 mm 2 , and the size of the stainless steel water diversion tank 6 is 110*50*2, and the flow area reaches 5088 mm 2 . The flow areas of the water inlet and outlet pipes and the water diversion pipe are basically the same, and they match each other. The water pressure in the first water tank 2 and the second water tank 5 is high, the water flow is fast, and the water volume is large. The cooling water does not stay in the entire conductive cross arm, and the silt and iron filings can be taken away by the circulating cooling water, and there is little deposition. In contrast, in the prior art, the 2 φ42*4 mm water diversion pipes used have a flow area of 1814 mm 2 , which is much smaller than the flow areas of the water inlet pipe 11 and the water outlet pipe 12 of the conductive cross arm 1, which are 5024 mm 2 .

[0028] A first chuck connecting plate 3 is installed on one side of the first water tank 2, and a second chuck connecting plate 4 is installed on one side of the second water tank 5;

[0029] Due to the matching of the flow areas and the non-retention of the cooling water, the cooling effect is good, so the service lives of the first chuck connecting plate 3 and the second chuck connecting plate 4 are improved.

[0030] A water separation plate 9 is installed on the inner wall of the first water tank 2, and a water passing port 10 is opened at one end of the first water tank 2.

[0031] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0032] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art will appreciate that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A water diversion pipe at the front end of a conductive cross arm of an electric furnace, comprising a conductive cross arm (1), characterized in that: An oil cylinder (7) is installed on the inner wall of the conductive cross arm (1), a stainless steel water diversion trough (6) is arranged inside the conductive cross arm (1), a first water flow box (2) is installed on the top of one side of the conductive cross arm (1), and a second water flow box (5) is installed on the bottom of one side of the conductive cross arm (1); The stainless steel water diversion trough (6) comprises a first water diversion trough (8) and a second water diversion trough (13); the first water diversion trough (8) is welded to the bottom end of the conductive cross arm (1), and one end of the first water diversion trough (8) extends to the inside of the second water transfer box (5); the second water diversion trough (13) is welded to one side of the conductive cross arm (1), and the two ends of the second water diversion trough (13) are respectively connected to the inside of the first water transfer box (2) and the second water transfer box (5).

2. The water diversion pipe at the front end of the conductive cross arm of an electric furnace according to claim 1, characterized in that: The first water diversion groove (8) and the second water diversion groove (13) are both U-shaped.

3. The water diversion pipe at the front end of the conductive cross arm of an electric furnace according to claim 1, characterized in that: A first clamp connection plate (3) is installed on one side of the first water transfer box (2), and a second clamp connection plate (4) is installed on one side of the second water transfer box (5).

4. The water diversion pipe at the front end of the conductive cross arm of an electric furnace according to claim 1, characterized in that: A water barrier (9) is installed on the inner wall of the first water transfer box (2), and a water outlet (10) is provided at one end of the first water transfer box (2).

5. The water diversion pipe at the front end of the conductive cross arm of an electric furnace according to claim 1, characterized in that: A water outlet pipe (12) is installed at one end of the conductive cross arm (1), and a water inlet pipe (11) is fixed at the other end of the conductive cross arm (1); the dimensions of the water inlet pipe (11) and the water outlet pipe (12) are φ89*4.5 mm, and the dimensions of the first water diversion groove (8) and the second water diversion groove (13) are 110*50*2 mm.

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