An electrical heating zero line cable fixture

Abstract

The utility model belongs to the cable protection field, specifically discloses a kind of electric heating zero line cable fixing device, including fixed base, fixed base is connected with cable pipe, the clamping mechanism for clamping zero line cable is installed on the lateral wall of cable pipe, fixed base is installed on the polished rod of upper portion of suspension adapter, zero line cable passes through cable pipe and is connected on suspension adapter.The utility model improves the stability of zero line cable fixation, effectively prevents zero line cable loose breakage, reduces the risk of electrical accident occurrence, guarantees the safe operation of electric heating equipment, and simple structure, easy to install and disassemble, it is convenient for the maintenance and overhaul work of later period, reduces maintenance cost.The utility model is suitable for the fixing of electric heating zero line cable of thick oil well, high condensate oil well and waxy well.

Description

Technical Field

[0001] This utility model belongs to the field of cable protection, specifically a device for fixing an electric heating neutral cable. Background Technology

[0002] Hollow rod electric heating technology is a type of thermal oil recovery technology, suitable for heating, viscosity reduction, and wax removal of crude oil during the lifting process within the wellbore in heavy oil wells, high-pour-point oil wells, and wax-containing wells. This technology utilizes the skin effect principle, integrating surface current to generate heat energy in the hollow rod wall, which then heats the oil well through heat conduction. During the operation of the electric heating equipment, the neutral wire plays a crucial role in balancing voltage and ensuring the normal operation of the electrical equipment. Currently, in production sites, the neutral cable lug of the pumping unit's electric heating system is connected to a connector, with a φ25mm smooth rod connected to the upper part of the connector and a φ36mm smooth rod connected to the lower part. Traditional neutral cable fixing methods often use simple tape wrapping or ordinary wire clips. When the equipment vibrates or is affected by external factors, the neutral wire is prone to loosening and breaking. A loose neutral wire leads to increased contact resistance, causing overheating, and in severe cases, potentially leading to electrical fires, threatening equipment safety and the safety of personnel and property. Simultaneously, a loose neutral wire also causes voltage instability, affecting the normal operation of the electric heating equipment, reducing heating efficiency, and increasing energy consumption. Utility Model Content

[0003] The purpose of this utility model is to provide a device for fixing the neutral wire of an electric heating cable, so as to fix the neutral wire of the cable, ensure the safe and stable operation of the electric heating equipment, improve the operating efficiency and reliability of the electric heating equipment, reduce maintenance costs, and extend the service life of the electrical equipment.

[0004] To achieve the above objectives, the technical method adopted by this utility model is as follows: An electric heating neutral cable fixing device includes a fixing base, a cable conduit connected to the fixing base, a clamping mechanism for clamping the neutral cable installed on the side wall of the cable conduit, the fixing base being installed on a smooth rod on the upper part of a suspension connector, and the neutral cable passing through the cable conduit and connected to the suspension connector.

[0005] As a limitation: the fixing seat includes a U-shaped clamp, a fixing baffle, a locking nut and a connecting rod. The open end of the U-shaped clamp passes through the fixing baffle and is threadedly connected to the locking nut. The bare rod passes between the U-shaped clamp and the fixing baffle. The closed end of the U-shaped clamp is fixedly connected to one end of the connecting rod, and the other end of the connecting rod is fixedly connected to the side wall of the cable conduit.

[0006] As a limitation: the clamping mechanism includes an adjusting screw and a fixing nut adapted to the adjusting screw. The fixing nut is fixed to the side wall of the cable conduit. A through hole is opened on the side wall of the cable conduit. One end of the adjusting screw passes through the fixing nut and the through hole in sequence and abuts against the neutral cable inside the cable conduit.

[0007] As a further limitation: the end of the adjusting screw that abuts against the neutral cable is provided with anti-slip teeth.

[0008] As another limitation: the upper end of the cable conduit is connected to a bend.

[0009] As a further specification: the neutral cable passes through the bend and the cable conduit in sequence and is connected to the cable lug. The cable lug is fixed to the suspension connector by fixing screws.

[0010] As a further limitation: the neutral cable is fitted with an insulating protective sleeve, and the neutral cable after being fitted with the insulating protective sleeve passes through the bend and the cable conduit in sequence and is connected to the cable lug. The cable lug is fixed to the suspension connector by fixing screws.

[0011] The beneficial effects achieved by this utility model, due to the adoption of the above-mentioned solution, compared with the prior art, are as follows: (1) The electric heating neutral cable fixing device provided by this utility model is provided with a fixing seat, a cable conduit and a clamping mechanism. The fixing seat fixes the electric heating neutral cable fixing device on the light rod on the upper part of the suspension connector, and the clamping mechanism clamps the neutral cable, which improves the stability of the neutral cable fixing, effectively prevents the neutral cable from loosening and breaking, reduces the risk of electrical accidents, and ensures the safe operation of the electric heating equipment. (2) The electric heating neutral cable fixing device provided by this utility model includes an adjusting screw and a fixing nut. The neutral cable is passed through the cable conduit. The adjusting screw is rotated to tighten the neutral cable, which improves the stability of the neutral cable fixing and effectively prevents the neutral cable from loosening and breaking. It is also suitable for neutral cables of different diameters and has good versatility, making it convenient to install and use in various electric heating equipment. By setting anti-slip teeth at the end of the adjusting screw that abuts against the neutral cable, the friction between the adjusting screw and the neutral cable is increased, preventing the neutral cable from sliding. (3) The electric heating neutral cable fixing device provided by this utility model enhances the insulation performance of the neutral cable by setting an insulating protective sleeve and covering the neutral cable with the insulating protective sleeve, reducing the risk of leakage, and at the same time protecting the neutral cable from damage by the clamping mechanism and extending the service life of the neutral cable. (4) The electric heating neutral cable fixing device provided by this utility model has a simple structure, is easy to install and disassemble, facilitates later maintenance and repair work, and reduces maintenance costs.

[0012] This utility model is applicable to the fixing of the neutral cable for electric heating in heavy oil wells, high-pour-point oil wells, and wax-containing wells. Attached Figure Description

[0013] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0014] Figure 1 This is a schematic diagram of the structure of an electric heating neutral cable fixing device according to Embodiment 1 of this utility model; Figure 2 This is a schematic diagram of the electric heating neutral cable fixing device in use according to Embodiment 1 of this utility model; Figure 3 This is a schematic diagram of the structure of an electric heating neutral cable fixing device according to Embodiment 2 of this utility model; In the diagram: 1. Locking nut; 2. Fixing baffle; 3. U-shaped clamp; 4. Connecting rod; 5. Insulating protective sleeve; 6. Bend; 7. Cable conduit; 8. Adjusting screw; 9. Fixing nut; 10. Cable lug; 11. Fixing screw; 12. Suspension connector; 13. Bare rod; 14. Neutral cable. Detailed Implementation

[0015] The present invention will be further described below with reference to the embodiments. Those skilled in the art should understand that the present invention is not limited to the following embodiments. Any improvements and equivalent changes made based on the specific embodiments of the present invention are within the scope of protection of the claims of the present invention.

[0016] Example 1 A device for fixing the neutral wire cable of an electric heating device, such as Figure 1 and Figure 2 As shown, the device includes a fixed base, a cable conduit 7 connected to the fixed base, a bend 6 connected to the upper end of the cable conduit 7, a clamping mechanism for clamping the neutral cable 14 installed on the side wall of the cable conduit 7, the fixed base being installed on the upper part of the suspension connector 12 on the smooth rod 13, the smooth rod 13 having a diameter of 25mm, the neutral cable 14 passing through the bend 6 and the cable conduit 7 in sequence and being connected to a cable lug 10, the cable lug 10 being fixed to the suspension connector 12 by fixing screws 11.

[0017] The fixing base includes a U-shaped clamp 3, a fixing baffle 2, a locking nut 1, and a connecting rod 4. The open end of the U-shaped clamp 3 passes through the fixing baffle 2 and is threadedly connected to the locking nut 1. The bare rod 13 passes between the U-shaped clamp 3 and the fixing baffle 2. The closed end of the U-shaped clamp 3 is fixedly connected to one end of the connecting rod 4, and the other end of the connecting rod 4 is fixedly connected to the side wall of the cable conduit 7.

[0018] The clamping mechanism includes an adjusting screw 8 and a fixing nut 9 adapted to the adjusting screw 8. The fixing nut 9 is fixed to the side wall of the cable conduit 7. A through hole is provided on the side wall of the cable conduit 7. One end of the adjusting screw 8 passes through the fixing nut 9 and the through hole in sequence and abuts against the neutral cable 14 in the cable conduit 7. The end of the adjusting screw 8 that abuts against the neutral cable 14 is provided with anti-slip teeth, which increases the friction between the adjusting screw 8 and the neutral cable 14 and prevents the neutral cable 14 from slipping.

[0019] In this embodiment, the electric heating neutral cable fixing device is used by clamping the U-shaped clamp 3 onto the 25mm diameter smooth rod 13. The open end of the U-shaped clamp 3 passes through both ends of the fixing baffle 2. The locking nut 1 is installed on the open end of the U-shaped clamp 3 and tightened to securely install the electric heating neutral cable 14 fixing device onto the smooth rod 13. The neutral cable 14 is then passed through the bend pipe 6 and the cable conduit 7 in sequence and connected to the cable lug 10. The cable lug 10 is fixed to the suspension connector 12 by the fixing screw 11. By rotating the adjusting screw 8, one end of the adjusting screw 8 is pressed against the neutral cable 14. This device is suitable for neutral cables 14 of different diameters, has good versatility, is convenient to install and use in various electric heating equipment, and ensures stable fixing of the neutral cable 14, effectively preventing the neutral cable 14 from loosening or breaking.

[0020] Example 2 like Figure 3 As shown, the structure of this embodiment is basically the same as that of Embodiment 1, except that the neutral cable 14 is covered with an insulating protective sleeve 5. The insulating protective sleeve 5 is made of insulating material and protects the neutral cable 14 from external damage. After the insulating protective sleeve 5 is on, the neutral cable 14 passes through the bend 6 and the cable conduit 7 in sequence and connects to the cable lug 10. One end of the adjusting screw 8 passes through the fixing nut 9 and the through hole in sequence and abuts against the insulating protective sleeve 5 on the outside of the neutral cable 14 inside the cable conduit 7. By rotating the adjusting screw 8, one end of the adjusting screw 8 is pressed against the insulating protective sleeve 5. The adjusting screw 8 abuts against the insulating protective sleeve 5, but does not directly abut against the neutral cable 14, thus protecting the neutral cable 14 from damage by the adjusting screw 8. The end of the adjusting screw 8 that abuts against the insulating protective sleeve 5 is provided with anti-slip teeth, which increases the friction between the adjusting screw 8 and the insulating protective sleeve 5 and prevents the neutral cable 14 from sliding after the insulating protective sleeve 5 is on. Other than this, the structure is exactly the same as that of Embodiment 1, and will not be described in detail in this embodiment.

Claims

1. A device for fixing an electric heating neutral cable, characterized in that, It includes a fixed base, on which a cable conduit is connected. A clamping mechanism for clamping the neutral cable is installed on the side wall of the cable conduit. The fixed base is installed on the light rod on the upper part of the suspension connector. The neutral cable passes through the cable conduit and is connected to the suspension connector.

2. The electric heating neutral cable fixing device according to claim 1, characterized in that, The fixing base includes a U-shaped clamp, a fixing baffle, a locking nut, and a connecting rod. The open end of the U-shaped clamp passes through the fixing baffle and is threadedly connected to the locking nut. The smooth rod passes between the U-shaped clamp and the fixing baffle. The closed end of the U-shaped clamp is fixedly connected to one end of the connecting rod, and the other end of the connecting rod is fixedly connected to the side wall of the cable conduit.

3. The electric heating neutral cable fixing device according to claim 1, characterized in that, The clamping mechanism includes an adjusting screw and a fixing nut that is compatible with the adjusting screw. The fixing nut is fixed to the side wall of the cable conduit. A through hole is provided on the side wall of the cable conduit. One end of the adjusting screw passes through the fixing nut and the through hole in sequence and abuts against the neutral cable inside the cable conduit.

4. The electric heating neutral cable fixing device according to claim 3, characterized in that, The end of the adjusting screw that abuts against the neutral cable has anti-slip teeth.

5. A device for fixing an electric heating neutral cable according to any one of claims 1-4, characterized in that, The upper end of the cable conduit is connected to a bend.

6. The electric heating neutral cable fixing device according to claim 5, characterized in that, The neutral cable passes through the bend and cable conduit in sequence and is connected to the cable lug. The cable lug is fixed to the suspension connector by fixing screws.

7. The electric heating neutral cable fixing device according to claim 5, characterized in that, An insulating protective sleeve is fitted on the neutral cable. After the insulating protective sleeve is fitted, the neutral cable passes through the bend and the cable conduit in sequence and is connected to the cable lug. The cable lug is fixed to the suspension connector by fixing screws.

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