Hydraulic insulating joint for submerged arc furnace
By designing a detachable hydraulic insulation joint structure, the high cost and inconvenience of maintaining the hydraulic system of the submerged arc furnace are solved, and the insulation and maintenance convenience are improved.
Patent Information
- Application Number
- CN202520170306.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-25
- Publication Date
- 2025-09-26
- Estimated Expiration
- 2035-01-25
AI Technical Summary
The existing hydraulic insulation joints of the submerged arc furnace need to be cut and re-welded during maintenance, which increases costs and is inconvenient. When replacing the nuts, they are loose and cannot be removed, affecting safety in use and convenience in maintenance.
A hydraulic insulating joint structure is designed, which includes a pipe joint, a nut, a pipe joint, an O-ring, an insulating sleeve and a pipe clamp. The structure is detachable through threaded connection and hook-pull connection, and an insulating link is added to improve safety. The pipe clamp is used to facilitate maintenance.
The insulation performance of the hydraulic system of the submerged arc furnace is improved, and maintenance and replacement of parts are facilitated, thereby reducing maintenance costs and difficulty.
Smart Images
Figure CN223388182U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of liquid conveying pipelines, in particular to a hydraulic insulating joint for a submerged arc furnace. Background Art
[0002] In existing technology, submerged arc furnaces can operate with live voltages, reaching up to 600V. Pipes connecting the submerged arc furnace and the hydraulic system ensure insulation while transferring liquid media. Conventional hydraulic insulating joints consist of a left pipe connector, a connecting nut, and a right pipe connector. After assembly, the left and right pipe connectors are welded to the target pipe, forming a single unit. When on-site maintenance is required, these connectors are simply cut off and re-welded with spare parts, increasing costs and inconvenience. Furthermore, loose nuts can become difficult to remove, making replacement difficult. Utility Model Content
[0003] The purpose of the utility model is to provide a hydraulic insulating joint for a submerged arc furnace with a reasonable structure and convenient maintenance in view of the above-mentioned shortcomings.
[0004] The technical solution of the present utility model is a hydraulic insulating joint for a submerged arc furnace, comprising a pipe joint 1, a nut, and a pipe joint 2, which are connected in sequence. The rear end of the pipe joint 1 is connected to the internal thread of the front end of the nut, with an O-ring between the connecting surfaces. The rear end of the nut is connected to the front end of the pipe joint 2 by a hook and pull connection, with an insulating sleeve between the hook and pull surfaces. At the same time, an insulating gasket is squeezed between the rear end of the pipe joint 1 and the front end of the pipe joint 2 within the nut, and the left extension of the insulating sleeve is squeezed onto the outer end surface of the insulating gasket. The rear end of the pipe joint 2 is connected to a pipe clamp, and the pipe clamp 7 is connected to the pipe joint 3.
[0005] The above scheme also includes:
[0006] The front end of the pipe joint is provided with a convex edge which is convenient for being hooked and pulled.
[0007] The insulating sleeve is an unequal diameter sleeve body, with a large diameter at the front end of the sleeve body and a small diameter at the rear end of the sleeve body.
[0008] The advantages of the present invention are: 1. By adding an insulating link, the joint has an increased insulating effect and is safe to use. 2. By adding a pipe clamp, the joint is made detachable, has a reasonable structure, and is easy to maintain.
[0009] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 This is a simplified structural diagram of the utility model. DETAILED DESCRIPTION
[0011] See also Figure 1The names of the parts are as follows: pipe joint 1, nut 2, O-ring 3, insulating gasket 4, insulating sleeve 5, pipe joint 2 6, pipe clamp 7, pipe joint 3 8, convex edge 9.
[0012] See also Figure 1 A hydraulic insulating joint for a submerged arc furnace comprises a pipe joint 1, a nut 2, and a pipe joint 6, which are connected in sequence. The external threads at the rear end of pipe joint 1 are connected to the internal threads at the front end of nut 2, and the two are plugged together. A leak-proof O-ring 3 is placed between the connecting surfaces. The rear end of nut 2 is connected to the front end of pipe joint 6 by hooking. Specifically, the front end of pipe joint 6 has a ridge 9 that facilitates hooking by the rear end of nut 2. The rear end of nut 2 is inserted into the rear end of ridge 9 of pipe joint 6, forming a hook connection. An insulating sleeve 5 is located between the hooking surfaces. The insulating sleeve 5 has an unequal diameter, with a larger diameter at the front end (left end) and a smaller diameter at the rear end (right end) to accommodate the structure of ridge 9. At the same time, an insulating gasket 4 is squeezed between the rear end of the pipe joint 1 and the front end of the pipe joint 2 6 in the nut 2, and the left extended section of the insulating sleeve 5 is squeezed onto the outer end surface of the insulating gasket 4, that is, the front end portion with a large diameter of the insulating sleeve 5 is sleeved onto the outer end surface of the insulating gasket 4, and the rear end portion with a small diameter of the insulating sleeve 5 is sleeved onto the outer surface of the pipe joint 2 6 behind the convex edge 9; the rear end of the pipe joint 2 6 is connected to the pipe hoop 7, and the pipe hoop 7 is connected to the pipe joint 3 8.
[0013] Instructions for use: The right end surface of pipe connector 1 is threaded; the right end of pipe connector 2 6 is threaded; the left side of pipe connector 3 8 is threaded. The left and right sides of pipe clamp 7 have internal threads. Insert the insulating washer 4, insulating sleeve 5, pipe connector 2 6, and O-ring 3 into nut 2 in sequence, then mate nut 2 with the right side threads of pipe connector 1 until nut 2 and the step of pipe connector 1 fit tightly together. Finally, connect pipe connector 2 6 and pipe connector 3 8 through pipe clamp 7 threads. During use, the left side of pipe connector 1 is welded to target pipe 1, and the right side of pipe connector 3 8 is welded to target pipe 2 to achieve the purpose of connecting the target pipes. During maintenance, unscrew pipe clamp 7 and nut 2 to replace the insulating washer 4, insulating sleeve 5, and O-ring 3. By adding the insulating link, the insulation effect of the joint is enhanced. By adding the pipe clamp, the joint is made detachable for easy maintenance.
[0014] The above description is only a specific implementation of the present invention, and various examples do not limit the essential content of the present invention.
Claims
1. A hydraulic insulating joint for a submerged arc furnace, comprising a pipe joint 1 (1), a nut (2) and a pipe joint 2 (6) connected in sequence, characterized in that The outer thread at the rear end of the pipe joint (1) is connected to the inner thread at the front end of the nut (2), and an O-type sealing ring (3) is provided between the connection surfaces of the two; the rear end of the nut (2) is connected to the front end of the pipe joint (6) by hook and pull, and an insulating sleeve (5) is provided between the hook and pull surfaces. At the same time, an insulating pad (4) is squeezed between the rear end of the pipe joint (1) and the front end of the pipe joint (6) in the nut (2), and the left extension section of the insulating sleeve (5) is squeezed onto the outer end surface of the insulating pad (4); the rear end of the pipe joint (6) is connected to the pipe hoop (7), and the pipe hoop (7) is connected to the pipe joint (8).
2. A hydraulic insulating joint for a submerged arc furnace according to claim 1, characterized in that The front end of the second pipe joint (6) is provided with a convex edge (9) for facilitating hooking and pulling.
3. A hydraulic insulating joint for a submerged arc furnace according to claim 1 or 2, characterized in that The insulating sleeve (5) is an unequal diameter sleeve body, with a large diameter at the front end of the sleeve body and a small diameter at the rear end of the sleeve body.