Mechanism for quickly repairing joint of electric heating capacitor cold water electrode

Abstract

The utility model discloses a kind of mechanism of quick repair electric heating capacitor cold water electrode joint, belong to electric heating capacitor maintenance field, including the fracture joint being arranged on electric heating capacitor, the outer surface of the fracture joint is connected with adapter joint, the outer surface of the fracture joint is sequentially sleeved with sealing element and L-shaped connecting electrode copper plate from below, the lower surface of the sealing element is in contact with electric heating capacitor, the upper surface of the sealing element is in contact with the L-shaped connecting electrode copper plate;Adapter joint is processed by lathe, can be directly and original fracture joint of electric heating capacitor thread screwing connection, original fracture joint does not need to be cut off and removed, and cooling pipeline, electrode assembly welded with joint also do not need to be replaced as a whole, the original intact structure of capacitor is retained to the maximum extent, the secondary damage caused to equipment by traditional cutting, replacement mode is completely avoided, effectively protect capacitor main part, prolong the overall service life of equipment.

Description

Technical Field

[0001] This utility model belongs to the field of electric heating capacitor repair technology, specifically relating to a mechanism for quickly repairing the cold water electrode joint of an electric heating capacitor. Background Technology

[0002] As a key piece of equipment in industrial metal processing and other scenarios, electrothermal capacitors ensure the stability of circuit operation with their efficient and uniform non-contact heating characteristics. Their cold water electrode connector is the core component that realizes the dual functions of "water cooling + circuit conduction". However, this connector is under harsh working conditions for a long time: on the one hand, it has to withstand the continuous impact of high-pressure cooling water, and on the other hand, frequent hot and cold alternation will cause repeated expansion and contraction of metal parts, which can easily cause metal fatigue at the nut tightening point, eventually leading to cracking and water leakage failure, directly causing the capacitor to stop.

[0003] Existing repair technologies have significant drawbacks: Traditional cold water electrode connectors are mostly fixed to capacitor cooling water circuits and electrode structures by welding. Once the connector breaks, the mainstream repair methods either require replacing the entire cooling pipe and electrode assembly welded to the connector—this method not only requires disassembling the main capacitor structure, but also incurs high component replacement costs and long repair cycles, severely impacting production continuity; or completely cutting off the broken residual connector from the welded area using cutting tools and then re-welding a new connector—however, the cutting process can easily damage the capacitor's internal core or casing, and the welding quality is affected by the operator's skill, easily resulting in defects such as weld porosity and slag inclusions. At the same time, cutting and welding operations require specialized equipment, further increasing the difficulty and cost of repair. Utility Model Content

[0004] The purpose of this invention is to provide a mechanism for quickly repairing the cold water electrode joint of an electrothermal capacitor, 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 mechanism for quickly repairing the cold water electrode joint of an electrothermal capacitor, comprising a broken joint disposed on the electrothermal capacitor, an adapter connected to the outer surface of the broken joint by a thread, and a sealing element and an L-shaped connecting electrode copper plate sequentially sleeved on the outer surface of the broken joint from bottom to top, the lower surface of the sealing element contacting the electrothermal capacitor, the upper surface of the sealing element contacting the L-shaped connecting electrode copper plate, the L-shaped connecting electrode copper plate contacting the adapter, and the L-shaped connecting electrode copper plate having an elongated screw hole along its height direction.

[0006] With the above technical solution, there is no need to cut or replace the original welded structure of the electrothermal capacitor. Basic assembly can be achieved simply by connecting the broken joint and the adapter joint with threads. At the same time, the sealing component forms a sealing buffer between the electrothermal capacitor and the L-shaped connecting electrode copper plate. The L-shaped connecting electrode copper plate can be flexibly adjusted in installation height through the screw holes to adapt to joint repair scenarios with different degrees of breakage. The overall structure takes into account both repair convenience and sealing reliability.

[0007] In a preferred embodiment, the adapter is made of brass and has an internal M16*14mm thread. The adapter has an octagonal structure with an octagonal dimension of 34mm and an overall height of 20mm. It also has drainage holes with an inner diameter of 8mm, an outer diameter of 13mm, and a length of 32mm along the axial direction.

[0008] Through the above technical solutions, brass material has excellent electrical conductivity and mechanical strength, which can not only meet the high current transmission requirements of electric heating capacitors, but also resist the impact of high-pressure cooling water and avoid deformation after long-term use.

[0009] In a preferred embodiment, the adapter is screwed into the remaining M16*16mm external thread of the broken connector via its own M16*14mm internal thread. Before screwing, PTFE tape is wrapped around the broken thread of the broken connector 1 to enhance the water circuit sealing performance.

[0010] The above technical solution utilizes a threaded structure with consistent nominal diameter to achieve a stable engagement. The effective length of the 14mm internal thread matches the remaining length of the 16mm external thread, ensuring connection strength. The PTFE tape can fill the thread gap and, together with the sealing element, form a double seal, significantly enhancing the waterway sealing performance and completely solving the leakage problem of the fractured joint.

[0011] In a preferred embodiment, one end of the drain hole of the adapter is connected to the internal water passage of the fracture joint, and the other end is connected to the external rubber water pipe to form a complete cooling water circulation path, which meets the cooling requirements of the electric heating capacitor.

[0012] With the above technical solution, there is no need to modify the original internal water circuit of the electric heating capacitor. The existing water circuit channel of the fracture joint can be directly used to form a closed loop circulation with the drain hole of the matching joint and the external rubber water pipe. Cooling water can enter the capacitor through the external rubber water pipe, drain hole and fracture joint in sequence, efficiently remove the heat generated by the core group during operation, and then be discharged through the corresponding channel to ensure that the capacitor is always at a suitable working temperature.

[0013] As a preferred embodiment, the octagonal outer surface of the adapter is designed to be non-slip, making it easy to tighten with a wrench during maintenance and improving installation convenience.

[0014] Through the above technical solution, the anti-slip design can significantly increase the friction between the wrench and the outer surface of the octagonal structure of the adapter, avoiding operational errors caused by wrench slippage during maintenance.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This invention relates to a mechanism for quickly repairing the cold water electrode joint of an electrothermal capacitor, achieving non-destructive repair and reducing equipment wear. The adapter, machined on a lathe, can be directly screwed into the original broken joint thread of the electrothermal capacitor without cutting or removing the original broken joint, or replacing the cooling pipes and electrode components welded to the joint. This preserves the original intact structure of the capacitor to the greatest extent, completely avoids the secondary damage to the equipment caused by traditional cutting and replacement methods, effectively protects the main components of the capacitor, and extends the overall service life of the equipment.

[0017] This invention relates to a mechanism for quickly repairing the cold water electrode connector of an electrothermal capacitor. The repair cost is low and the cycle is short. Compared with the traditional method of replacing the entire welded component (high cost and long cycle) or cutting and re-welding (requiring professional equipment and personnel), this solution only requires processing a single standardized adapter connector (low material cost and short processing time). With simple thread engagement and sealing assembly operations, the repair can be completed in a short time, which significantly reduces the time and economic cost of maintenance, reduces the impact of capacitor downtime on production, and ensures production continuity.

[0018] This mechanism for quickly repairing the cold water electrode connector of an electric heating capacitor is highly adaptable and can be reused in batches. The structural parameters of the adapter connector (such as M16*14mm internal thread, octagonal size, drain hole specifications, etc.) are standardized. For the same type of electric heating capacitor cold water electrode connector fracture fault (especially the case where the M16*16mm external thread remains after fracture), the adapter connector can be mass-produced and reused. There is no need to design and process repair parts separately for each fault, which greatly improves the repair efficiency of similar faults. Attached Figure Description

[0019] Figure 1 This is a front view structural diagram of the present utility model (the left side is the connector in normal use, and the right side is the connector after fracture repair).

[0020] Figure 2 This is a frontal cross-sectional view of the present invention (the left side shows the connector in normal use, and the right side shows the connector after fracture repair).

[0021] In the diagram: 1. Broken connector; 2. Adapter connector; 3. Seal; 4. L-shaped connecting electrode copper plate; 5. Screw hole; 6. Drain hole. Detailed Implementation

[0022] The present invention will be further described below with reference to the embodiments.

[0023] The following embodiments are used to illustrate the present invention, but should not be used to limit the scope of protection of the present invention. The conditions in the embodiments can be further adjusted according to specific conditions, and simple improvements to the method of the present invention under the premise of the concept of the present invention are all within the scope of protection claimed by the present invention.

[0024] Please see Figure 1 and Figure 2 This utility model provides a mechanism for quickly repairing the cold water electrode connector of an electrothermal capacitor, including a broken connector 1 disposed on the electrothermal capacitor. The remaining broken portion of the broken connector 1 has an M16*16mm external thread. An adapter connector 2 is threaded onto the outer surface of the broken connector 1. The adapter connector 2 is made of brass and has an M16*14mm internal thread. The adapter connector 2 has an octagonal structure with an octagonal dimension of 34mm and an overall height of 20mm. It also has a drainage hole 6 with an inner diameter of 8mm, an outer diameter of 13mm, and a length of 32mm along the axial direction. Brass has excellent electrical conductivity and mechanical strength, meeting the high current transmission requirements of the electrothermal capacitor while resisting the impact of high-pressure cooling water, preventing deformation over long-term use. The octagonal outer surface of the adapter connector 2 has an anti-slip design, facilitating tightening with a wrench during repair, improving installation convenience. The anti-slip design significantly increases the friction between the wrench and the octagonal outer surface of the adapter connector 2, preventing operational errors caused by wrench slippage during repair.

[0025] Furthermore, the adapter 2 connects to the remaining M16*16mm external thread of the broken connector 1 via its own M16*14mm internal thread. Before screwing, PTFE tape is wrapped around the broken thread of the broken connector 1. The thread structure with the same nominal diameter is used to achieve a stable screwing. The effective length of the 14mm internal thread matches the remaining length of the 16mm external thread to ensure connection strength. The PTFE tape can fill the thread gap and form a double seal with the sealing element 3, which significantly enhances the water circuit sealing performance.

[0026] Furthermore, one end of the drain hole 6 of the adapter 2 is connected to the internal water passage of the fracture joint 1, and the other end is connected to the external rubber water pipe, forming a complete cooling water circulation path to meet the cooling requirements of the electric heating capacitor. There is no need to modify the original internal water passage of the electric heating capacitor. The existing water passage of the fracture joint 1 is directly used, and the drain hole 6 of the adapter 2 and the external rubber water pipe are used to form a closed loop circulation. The cooling water can enter the capacitor through the external rubber water pipe, drain hole 6, and fracture joint 1 in sequence, efficiently removing the heat generated by the core assembly during operation, and then being discharged through the corresponding passage to ensure that the capacitor is always at a suitable operating temperature.

[0027] Furthermore, the outer surface of the fracture joint 1 is fitted with a sealing element 3 and an L-shaped connecting electrode copper plate 4 from bottom to top. The lower surface of the sealing element 3 is in contact with the electrothermal capacitor, and the upper surface of the sealing element 3 is in contact with the L-shaped connecting electrode copper plate 4. The L-shaped connecting electrode copper plate 4 is in contact with the adapter joint 2. The L-shaped connecting electrode copper plate 4 has a screw elongated hole 5 along the height direction.

[0028] The working principle of this utility model:

[0029] During maintenance, the first step is to machine the adapter 2 using a lathe. The adapter 2 has an M16*14mm internal thread inside, an octagonal structure (octagonal size 34mm) on the outside, an overall height of 20mm, and a drainage hole 6 with an inner Φ8mm, an outer Φ13mm, and a length of 32mm along the axial direction.

[0030] The second step is to pre-treat the broken joint 1 on the electric heating capacitor: use an angle grinder to smooth the burrs at the break point.

[0031] The third step is to evenly wrap three turns of PTFE tape around the broken wire of the external thread of the fracture joint 1: the PTFE tape should cover the entire circumference of the thread to fill the thread gap and enhance the initial sealing effect;

[0032] The fourth step is to assemble the sealing component 3 and the L-shaped connecting electrode copper plate 4 in sequence: put the polished brass flat gasket sealing component 3 into the top of the fracture joint 1 until its lower surface is in close contact with the electric heating capacitor box, and then put the hole end of the L-shaped connecting electrode copper plate 4 onto the fracture joint 1 so that its lower surface is completely in contact with the brass flat gasket.

[0033] The fifth step is to install adapter 2. Use a wrench to hold the octagonal structure of adapter 2 and slowly screw it in, aligning its M16*14mm internal thread with the M16*16mm external thread of the broken connector 1, until the lower surface of adapter 2 is in close contact with the upper surface of the L-shaped connecting electrode copper plate 4, ensuring that the threaded connection is not loose.

[0034] Step 6: Fix the L-shaped connecting electrode copper plate 4: Adjust the position of the L-shaped connecting electrode copper plate 4 according to the actual height of the original electrodes of the capacitor, so that the screw holes 5 on the copper plate are aligned with the preset screw holes of the capacitor box (or the electrode mounting position of the capacitor body), insert the screws and tighten them; during the tightening process, ensure that the lower surface of the L-shaped connecting electrode copper plate 4 is in close contact with the sealing element 3.

[0035] Step 7: Complete the water circuit connection and test. Slide the external rubber water pipe over the drain hole 6 of the adapter 2 and fix it. Then, turn on the cooling water to test the water pressure and observe whether there is any leakage at the break and threaded connection. If there is no leakage, the repair is complete.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A mechanism for quickly repairing the cold water electrode joint of an electrothermal capacitor, comprising a broken joint (1) disposed on the electrothermal capacitor, characterized in that: The outer surface of the fracture joint (1) is threaded with an adapter (2). The outer surface of the fracture joint (1) is fitted with a sealing element (3) and an L-shaped connecting electrode copper plate (4) from bottom to top. The lower surface of the sealing element (3) is in contact with the electrothermal capacitor, and the upper surface of the sealing element (3) is in contact with the L-shaped connecting electrode copper plate (4). The L-shaped connecting electrode copper plate (4) is in contact with the adapter (2). The L-shaped connecting electrode copper plate (4) has a screw elongated hole (5) along the height direction.

2. The mechanism for quickly repairing the cold water electrode connector of an electrothermal capacitor according to claim 1, characterized in that: The adapter (2) is made of brass and has an M16*14mm internal thread. The adapter (2) has an octagonal structure with an octagonal dimension of 34mm and an overall height of 20mm. It also has a drainage hole (6) with an inner diameter of 8mm, an outer diameter of 13mm, and a length of 32mm along the axial direction.

3. The mechanism for quickly repairing the cold water electrode connector of an electrothermal capacitor according to claim 2, characterized in that: The adapter (2) is connected to the broken part of the broken connector (1) by its own M16*14mm internal thread and the M16*16mm external thread of the broken connector (1). Before screwing, PTFE tape is wrapped around the broken thread of the broken connector (1) to enhance the water circuit sealing performance.

4. The mechanism for quickly repairing the cold water electrode connector of an electrothermal capacitor according to claim 2, characterized in that: One end of the drain hole (6) of the adapter (2) is connected to the internal water passage of the broken connector (1), and the other end is connected to the external rubber water pipe to form a complete cooling water circulation path to meet the cooling requirements of the electric heating capacitor.

5. The mechanism for quickly repairing the cold water electrode connector of an electrothermal capacitor according to claim 1, characterized in that: The octagonal outer surface of the adapter (2) is designed to be non-slip, making it easy to tighten with a wrench during maintenance and improving installation convenience.

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