Submerged arc furnace water-cooled cable anti-drop clamp

Abstract

The utility model discloses a submerged arc furnace water-cooled cable anti-drop clamp which comprises a copper pipe and a groove type clamp, one end of the copper pipe is sleeved with a double-lug flange, the other end of the copper pipe is provided with a rubber hose, a plurality of copper stranded cables are arranged in the rubber hose, one end of each copper stranded cable is provided with a copper connector, and one end, inserted into the rubber hose, of each copper connector is provided with a rectangular groove. The O-shaped sealing ring is additionally arranged between the copper connector and the rubber hose, the O-shaped ring is attached to the contact face of the rubber hose by means of elastic deformation of the O-shaped ring, primary sealing is formed, and the O-shaped ring is tightly attached to the outer side of the copper connector and the end face of the inner side of the rubber hose through pressure generated by subsequent fastening of the groove type clamp, so that secondary sealing is achieved. The double-sealing design greatly enhances the sealing performance of the joint of the water-cooled cable, effectively eliminates the water leakage phenomenon at the joint, ensures the normal operation of the water-cooled cable, and avoids the serious potential safety hazards such as electrode short circuit and arcing caused by water leakage.

Description

Technical Field

[0001] This utility model belongs to the field of electric arc furnace cable technology, specifically relating to an anti-detachment clamp for water-cooled cables of electric arc furnaces. Background Technology

[0002] In the production of ferroelectric arc furnaces, the short-circuit network system is responsible for transmitting large currents and plays a crucial role in the safe and stable operation of the furnace. Water-cooled cables (...) Figure One (As shown in Figure 5) is the flexible connection part of the electrode, which plays an important role in the electrode raising and lowering and the transmission of current. Each water-cooled cable consists of 6 strands of 20mm diameter copper stranded cable. Figure Two (As shown in Figure 8) and copper connector ( Figure Two (As shown in Figure 6) is a crimped assembly, externally wrapped with a layer of rubber tubing containing glass fiber ( Figure Two As shown in Figure 7, it can withstand temperatures of around 300 degrees Celsius, ensuring good insulation strength. Two anti-magnetic stainless steel clamps are used at each end of the cable. Figure Two (As shown in Figure 5) Tighten the cable, and cool water is evenly injected into the cable through the evacuation holes on the cable joint to ensure that each single copper core wire is fully cooled.

[0003] Since the water-cooled cable is the only part of the short network that can move up and down, during the production process, when the electrodes are raised and lowered, the cable will move up and down with them, and will be subjected to tension and torque. In addition, it will be continuously operated in a high-temperature and dusty environment for a long time, and stainless steel clamps are used to clamp it. Figure Two As shown in Figure 5, the rubber hose is prone to loosening or even breakage, causing damage to the hose. Figure Two (As shown in Figure 7) and the cable copper connector ( Figure Two (As shown in Figure 6) The disconnection of the water-cooled cable can cause water leakage. Once the leakage occurs, it may cause short circuits and arcing of the electrodes, posing a major equipment safety hazard and directly affecting the safe and stable operation of the electric arc furnace and transformer. Utility Model Content

[0004] The purpose of this utility model is to provide an anti-detachment clamp for water-cooled cables of electric arc furnaces, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a clamp for preventing the water-cooled cable of a submerged arc furnace from detaching, comprising:

[0006] The utility model discloses a copper pipe, one end of the copper pipe is sleeved with double -ear flange, one end of the copper pipe is equipped with rubber hose, a plurality of copper stranded cables are equipped in the rubber hose, and one end of the copper stranded cable is equipped with copper connector, one end of the copper connector is inserted into the rubber hose, one end of the copper connector inserted into the rubber hose is equipped with rectangular slot, the rectangular slot is sleeved with O type sealing ring, and the O type sealing ring is used for sealing the insertion joint of the copper connector and the rubber hose.

[0007] Groove type clamp is sleeved with the insertion joint of the copper connector and the rubber hose, and is used for fixing the insertion joint of the copper connector and the rubber hose.

[0008] Preferably, the groove type clamp includes first clamping piece and second clamping piece, and the first clamping piece and the second clamping piece are sleeved with the insertion joint of the copper connector and the rubber hose.

[0009] Preferably, the first clamping piece and the second clamping piece are both connected with fixing ears at two ends, and the fixing ears at two ends of the first clamping piece and the second clamping piece are fixed through first inner hexagonal bolt.

[0010] Preferably, the copper connector is connected with copper nut on the surface through screw thread, and one side of the copper nut is connected with the double -ear flange.

[0011] Preferably, the first clamping piece and the second clamping piece are both connected with connecting ears on the surface.

[0012] Preferably, the double -ear flange and the connecting ear are fixed through second inner hexagonal bolt.

[0013] Compared with the prior art, the utility model has the advantages that:

[0014] (1) the O type sealing ring added between the copper connector and the rubber hose is the key to improve the sealing performance, the rectangular slot of the copper connector is processed according to the adaptive standard of the O type sealing ring, the O type ring is sleeved first during installation, then the rubber hose is installed, and finally the groove type clamp is fastened, and in the installation process, the O type ring is deformed elastically and is attached to the contact surface of the rubber hose, forming primary sealing, and the pressure generated by the subsequent fastening of the groove type clamp makes the O type ring closely attached to the end surface between the outside of the copper connector and the inside of the rubber hose, achieving secondary sealing, so that the sealing performance of the water-cooled cable connection is greatly enhanced, the water leakage phenomenon at the joint is effectively eliminated, the normal operation of the water-cooled cable is ensured, serious safety hazards such as electrode short circuit arc caused by water leakage are avoided, and the safe and stable operation of the electric arc furnace and the transformer is maintained.

[0015] (2) the original two stainless steel clamps are changed into split type stainless steel groove type clamps, the installation process is greatly simplified, a small jack is used to assist during installation, the two ends of the groove type clamp are accurately embedded on the surface of the copper connector, and finally the installation is completed through the fastening of the first inner hexagonal bolt, so that the installation efficiency is improved.

[0016] (3) the outside of the copper nut is additionally provided with 10mm thick stainless steel double-ear flange, which cooperates with the groove type clamp, further improves the stability of the connection, when the copper joint is locked with the copper nut, the double-ear flange is pulled tight with the groove type clamp through the second inner hexagonal bolt, a strong axial tension is formed, and the copper joint and the rubber hose are effectively prevented from being separated. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a short net system schematic diagram of prior art ore-heating furnace;

[0018] Figure 2 It is an original water-cooled cable assembly structure schematic diagram;

[0019] Figure 3 It is a structure schematic diagram of the utility model;

[0020] Figure 4 It is a structure schematic diagram of the groove type clamp of the utility model;

[0021] Figure 5 It is a structure schematic diagram of the double-ear flange of the utility model.

[0022] In the figure: 1, copper pipe; 2, double-ear flange; 3, second inner hexagonal bolt; 4, copper nut; 5, copper joint; 6, groove type clamp; 7, rectangular groove; 8, O-shaped sealing ring; 9, first inner hexagonal bolt; 10, rubber hose; 11, copper cable; 12, first clamping half; 13, second clamping half; 14, fixing ear; 15, connecting ear. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0024] The utility model provides a kind of ore-heating furnace water-cooled cable anti-separation clamp as shown in Figures 3-5 Including:

[0025] The copper pipe 1 is sleeved with a double-ear flange 2 at one end, and is provided with a rubber hose 10 at the other end, the rubber hose 10 is provided with a plurality of copper cables 11, and one end of the copper cable 11 is provided with a copper connector 5, one end of the copper connector 5 is inserted into the rubber hose 10, the one end of the copper connector 5 inserted into the rubber hose 10 is provided with a rectangular groove 7, the rectangular groove 7 is sleeved with an O-shaped sealing ring 8, and the O-shaped sealing ring 8 seals the insertion joint of the copper connector 5 and the rubber hose 10.

[0026] The groove clamp 6 is sleeved on the insertion joint of the copper connector 5 and the rubber hose 10, and is used for fixing the insertion joint of the copper connector 5 and the rubber hose 10.

[0027] The groove clamp 6 includes a first clamping piece 12 and a second clamping piece 13, the first clamping piece 12 and the second clamping piece 13 are sleeved on the insertion joint of the copper connector 5 and the rubber hose 10, the groove clamp 6 is changed into the first clamping piece 12 and the second clamping piece 13, the traditional fastening mode is changed, in the installation, first, the installation positions of the first clamping piece 12 and the second clamping piece 13 are determined, and due to the fact that the two ends of the first clamping piece 12 and the second clamping piece 13 are designed to be matched with the shape of the groove of the copper connector 5, with the aid of a small jack, the two ends of the first clamping piece 12 and the second clamping piece 13 can be smoothly embedded into the two grooves of the copper connector 5, and the subsequent fastening operation is facilitated.

[0028] The two ends of the first clamping piece 12 and the second clamping piece 13 are connected with fixing ears 14, and the fixing ears 14 at the two ends of the first clamping piece 12 and the second clamping piece 13 are screw-fixed through a first inner hexagonal bolt 9.

[0029] The copper connector 5 is screw-connected with a copper nut 4 on the surface, and one side of the copper nut 4 is connected with the double-ear flange 2.

[0030] The first clamping piece 12 and the second clamping piece 13 are connected with connecting ears 15 on the surfaces, the double-ear flange 2 and the connecting ears 15 are screw-fixed through a second inner hexagonal bolt 3, along with the tightening of the second inner hexagonal bolt 3, the distance between the double-ear flange 2 and the first clamping piece 12 and the second clamping piece 13 gradually decreases, a strong axial tension can be generated, and the connection between the copper connector 5 and the rubber hose 10 is more closely.

[0031] The water-cooled cable anti-loose clamp of the submerged arc furnace is provided with an O-shaped sealing ring 8 with an inner diameter of 75 mm and a width of 3.5 mm, which is sleeved on the rectangular groove 7 of the copper joint 5 before installation. When the one end of the copper joint 5 is inserted into the rubber hose 10, the O-shaped sealing ring 8 is extruded by the rectangular groove 7 of the copper joint 5 and the inner wall of the rubber hose 10, and is elastically deformed. The elastic deformation of the O-shaped sealing ring 8 makes it tightly fit the outer side of the copper joint 5 and the inner side of the rubber hose 10, and fills the gap between the copper joint 5 and the rubber hose 10, thereby forming a primary seal and preventing the leakage of the cooling liquid.

[0032] Then, the first clamping piece 12 and the second clamping piece 13 of the groove clamp 6 are fastened to the joint part of the copper joint 5 and the rubber hose 10 by the first inner hexagonal bolt 9 according to the installation size requirement. With the tightening of the first inner hexagonal bolt 9, the first clamping piece 12 and the second clamping piece 13 generate gradually increasing clamping force on the copper joint 5 and the rubber hose 10. With the further tightening of the first inner hexagonal bolt 9, the clamping force of the first clamping piece 12 and the second clamping piece 13 continues to increase, and the pressure on the O-shaped sealing ring 8 also increases. At this time, the O-shaped sealing ring 8 not only tightly fits the copper joint 5 and the rubber hose 10, but also further fills the possible small gap under the action of pressure, so that the sealing effect is significantly improved, forming a secondary seal. The double sealing structure greatly improves the sealing performance of the water-cooled cable joint, effectively avoids the problem of water leakage at the joint, and through the screwing of the first inner hexagonal bolt 9 to fix the first clamping piece 12 and the second clamping piece 13, the loosening of the copper joint 5 and the rubber hose 10 under external force during jointing can be effectively prevented, the fastening effect of the groove clamp 6 is ensured, and the groove clamp 6 always tightly fixes the copper joint 5 and the rubber hose 10, maintaining a good connection state.

[0033] After the groove clamp 6 is installed in place, the 10 mm thick stainless steel double-ear flange 2 added outside the copper nut 4 on the copper pipe 1 is pulled tight between the first clamping piece 12 and the second clamping piece 13 through two second inner hexagonal bolts 3. With the tightening of the second inner hexagonal bolt 3, the distance between the double-ear flange 2 and the first clamping piece 12 and the second clamping piece 13 gradually decreases, generating a strong axial tension. This axial tension directly acts on the connection part of the copper joint 5 and the rubber hose 10, making the connection between the copper joint 5 and the rubber hose 10 more tight, effectively resisting the external force that causes the separation of the two due to factors such as electrode lifting. In the production process of the submerged arc furnace, the electrode is constantly lifted and lowered, and the water-cooled cable moves up and down accordingly, which will be subjected to a large tensile force and torsional force. This axial tension structure can disperse these external forces and avoid the separation of the copper joint 5 and the rubber hose 10.

[0034] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application has been described in detail, for the skilled in the art, it still can be modified, or for part of the technical features of the equivalent replacement, the spirit and principles of the present application, made any modification, equivalent replacement, improvement, etc., should be included within the scope of the present application.

Claims

1. A mine heat furnace water cooling cable anti -off clamp, its characterized in that, Include: Copper pipe (1), one end of the copper pipe (1) is equipped with double lug flange (2), the other end of the copper pipe (1) is provided with rubber hose (10), the rubber hose (10) is provided with a plurality of copper cable (11) and the one end of the copper cable (11) is provided with copper connector (5), the one end of the copper connector (5) is inserted into the rubber hose (10), the one end of the copper connector (5) inserted into the rubber hose (10) is provided with rectangular slot (7), the rectangular slot (7) is equipped with O type sealing ring (8), the copper connector (5) and the rubber hose (10) are sealed by the O type sealing ring (8) at the insertion joint; Groove type clamp (6), the groove type clamp (6) is equipped with the insertion joint of the copper connector (5) and the rubber hose (10), for fixing the insertion joint of the copper connector (5) and the rubber hose (10).

2. A de-calking clamp for a water cooled cable of an electric arc furnace as claimed in claim 1, wherein: The groove type clamp (6) includes first clamping piece (12), second clamping piece (13), the first clamping piece (12) and the second clamping piece (13) are equipped with the insertion joint of the copper connector (5) and the rubber hose (10).

3. A mine heat furnace water-cooled cable anti-off clamp according to claim 2, characterized in that: The first clamping piece (12) and the second clamping piece (13) are both connected with fixed lug (14) at both ends, and the fixed lug (14) at both ends of the first clamping piece (12) and the second clamping piece (13) is fixed by first inner hexagonal bolt (9) through screwing.

4. The anti-creep clamp for water-cooled cable of an electric arc furnace according to claim 1, characterized in that: The surface of the copper connector (5) is connected with copper nut (4) through screwing, and the one side of the copper nut (4) is connected with double lug flange (2).

5. The anti-creep clamp for water-cooled cable of an electric arc furnace according to claim 2, characterized in that: The surface of the first clamping piece (12) and the second clamping piece (13) is connected with connecting lug (15).

6. A mine heat furnace water-cooled cable anti-off clamp according to claim 5, characterized in that: The double lug flange (2) and the connecting lug (15) are fixed by second inner hexagonal bolt (3) through screwing.

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