Moisturizing structure for cement surface of rod-shaped porcelain insulator
By setting a moisture-retaining structure on the rod-shaped porcelain insulator, including a moisture-retaining cloth bag and reinforcing components, the problem of drying and cracking caused by moisture loss after the blank is shaped is solved, continuous and uniform water supply is achieved, mechanical strength and insulation performance are improved, and the installation process is simplified.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SUZHOU PORCELAIN INSULATOR WORKS (SUQIAN) CO LTD
- Filing Date
- 2025-06-25
- Publication Date
- 2026-04-21
AI Technical Summary
During the production process of rod-shaped porcelain insulators, the transition arc surface is prone to drying and cracking due to moisture loss after the blank is shaped, which affects mechanical strength and insulation performance.
It adopts a moisturizing structure, including a moisturizing cloth bag and a moisturizing reinforcement. The moisturizing cloth bag is filled with open-pore polyurethane sponge, and the retaining ring has water seepage holes. It is locked by hook and loop fasteners and threaded rods to achieve continuous and uniform water supply and prevent dryness and cracking.
It effectively prevents the dry cracking of the transition arc surface between the insulator body and the end, ensures mechanical strength and insulation performance, is easy to install, has good sealing performance, is highly applicable, and improves production efficiency.
Smart Images

Figure CN224153197U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of insulator production technology, and in particular relates to a moisture-retaining structure for the cement surface of a rod-shaped porcelain insulator. Background Technology
[0002] As an indispensable key component in the power system, rod-shaped porcelain insulators are widely used in power facilities such as transmission lines and substations due to their excellent insulation performance and mechanical strength. They play an important role in supporting and insulating conductors, and their quality is directly related to the safety and stability of the power system operation. In the manufacturing process of rod-shaped porcelain insulators, there is a transition arc surface between the insulator body and the end. The structural integrity of this transition arc surface has an important impact on the overall performance of the insulator.
[0003] However, in the various processes of insulator production, after the blank body is shaped, it will undergo maintenance, glazing, and other steps. During this process, the blank body is very prone to drying problems due to moisture loss. Especially in the hot summer, the high temperature environment accelerates the evaporation of moisture, making the transition arc surface between the insulator body and the end particularly prone to cracking due to excessive drying. Once the transition arc surface cracks, it will not only weaken the mechanical strength of the insulator, making it easy to break when subjected to mechanical stress, but also damage the insulation structure of the insulator, reduce insulation performance, and increase safety hazards in the power transmission process.
[0004] Therefore, industry professionals have developed a moisture-retaining structure for the cement surface of rod-shaped porcelain insulators to solve the problem of drying and cracking of the transition arc surface during the production of rod-shaped porcelain insulators. Utility Model Content
[0005] The purpose of this invention is to provide a cement surface moisture-retaining structure for rod-shaped porcelain insulators, which addresses the problem that in the existing rod-shaped porcelain insulator production process, the preform is prone to moisture loss during the curing and glazing processes after shaping, leading to excessive drying and cracking of the transition arc surface between the insulator body and the end, thereby weakening the mechanical strength and damaging the insulation structure.
[0006] This utility model achieves the above-mentioned objective through the following technical solution: a rod-shaped porcelain insulator cement surface moisture-retaining structure, including an insulator, wherein a moisture-retaining structure is provided at the end of the insulator, and the moisture-retaining structure is composed of a moisture-retaining strip and a moisture-retaining reinforcing member;
[0007] The moisturizing belt includes a moisturizing cloth bag, the inside of which is filled with a moisturizing sponge, and the end of the moisturizing cloth bag is provided with a Velcro fastener;
[0008] The moisture-retaining reinforcement includes two sets of retaining rings that are rotatably arranged relative to each other. The retaining rings are hollow inside, and the top of the retaining rings is provided with a water inlet communicating with its cavity. Several water seepage holes are evenly distributed on the bottom of the inner wall of the retaining rings. A threaded rod is rotatably provided at the end of one of the retaining rings, and a locking nut is provided on the threaded rod. The locking nut makes the two sets of retaining rings fit together.
[0009] Furthermore, the moisturizing bag is made of non-woven fabric, and the moisturizing sponge is an open-cell polyurethane sponge.
[0010] Furthermore, the hook and loop fastener includes a hook side and a loop side that cooperate with each other, and the hook side and the loop side are respectively disposed on both sides of the end of the moisturizing cloth bag.
[0011] Furthermore, the inner wall of the retaining ring is provided with an anti-slip texture.
[0012] Furthermore, a sealing cap is provided at the water inlet, and the sealing cap is connected to the water inlet by a snap-fit connection.
[0013] Furthermore, the diameter of the seepage hole is 1-2 mm.
[0014] Furthermore, the inner wall of the locking nut is provided with an anti-loosening washer, and the outer wall of the locking nut is provided with a tightening arm.
[0015] Furthermore, the width of the moisturizing strip is greater than the width of the moisturizing reinforcement.
[0016] Beneficial effects: This utility model has a reasonable design, simple and stable structure, and strong practicality, and has the following beneficial effects:
[0017] 1. High-efficiency moisture retention: The moisture retention structure, through the open-cell polyurethane sponge filling the moisture retention bag and the water seepage holes at the bottom of the moisture retention reinforcement ring, can continuously and evenly provide moisture to the cement surface of the insulator, effectively preventing the insulator body and the end transition arc surface from cracking due to dryness, and ensuring the mechanical strength and insulation performance of the insulator.
[0018] 2. Easy installation: The hook and loop fasteners at the ends of the moisturizing bag use a combination of hook and loop surfaces. The two sets of retaining rings of the moisturizing reinforcement quickly engage with the locking nut via the threaded rod, making the installation and disassembly of the moisturizing structure convenient and greatly improving the operational efficiency in the production process.
[0019] 3. Excellent sealing: The sealing cap at the water inlet is fastened to the water inlet, which can effectively prevent water from overflowing. It can also be easily opened when water needs to be added, ensuring a stable water supply inside the moisturizing reinforcement and further improving the moisturizing effect.
[0020] 4. Strong applicability: The width of the moisture-retaining tape is greater than the width of the moisture-retaining reinforcement, which can completely cover the cement surface and transition arc surface of the insulator end, while also preventing the moisture-retaining reinforcement from directly contacting the surface of the insulator. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the present invention;
[0022] Figure 2 This is a schematic diagram of the structure of the moisturizing strip of this utility model;
[0023] Figure 3 This is a schematic diagram of the structure of the moisture-retaining reinforcement component of this utility model.
[0024] In the diagram: 1-Insulator, 2-Moisturizing tape, 3-Moisturizing reinforcement;
[0025] 201-Moisturizing cloth bag, 202-Moisturizing sponge, 203-Hook and loop fastener, 301-Snap ring, 302-Water inlet, 303-Drain hole, 304-Threaded rod, 305-Locking nut. Detailed Implementation
[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0027] Example 1:
[0028] Combination Figure 1-3 The illustrated rod-shaped porcelain insulator cement surface moisture retention structure includes an insulator 1. To ensure its production quality, a moisture retention structure is provided at the end of the insulator 1. The moisture retention structure is composed of a moisture retention strip 2 and a moisture retention reinforcement 3. The two work together to achieve efficient moisture retention of the cement surface at the end of the insulator 1.
[0029] The moisture-retaining tape 2 includes a moisture-retaining cloth bag 201, which is preferably made of a breathable and water-resistant non-woven fabric. This material can retain moisture while allowing moderate air circulation, preventing mold growth and odor caused by excessive humidity. Its soft texture allows it to fit closely to the complex surface shape of the insulator end. The moisture-retaining cloth bag 201 is filled with a moisture-retaining sponge 202, which is an open-cell polyurethane sponge with high porosity. Its interconnected pore structure can store a large amount of moisture and release it slowly when the external humidity decreases, thereby continuously providing a moist environment for the cement surface of the insulator. The moisture-retaining cloth bag 201 is provided with a hook and loop fastener 203 at its end. The hook and loop fastener 203 includes a hook side and a loop side that cooperate with each other. The hook and loop sides are respectively located on both sides of the end of the moisture-retaining cloth bag 201. The moisture-retaining cloth bag 201 can be quickly and firmly connected by the hook and loop sides, which facilitates installation and disassembly during the insulator production process.
[0030] The moisture-retaining reinforcement 3 includes two sets of retaining rings 301 arranged in a relatively rotatable manner. The shape of the retaining rings 301 facilitates a tight fit with the insulator end. The interior of the retaining rings 301 is hollow, forming a water storage cavity for storing moisture-retaining water. A water inlet 302 communicating with the cavity is provided on the top of the retaining rings 301. A sealing cap is provided at the water inlet 302. The sealing cap is connected to the water inlet 302 by a snap-fit connection, which can effectively prevent water from overflowing during storage and use, and also facilitate the operator to open the sealing cap for water replenishment. Several seepage holes 303 are evenly distributed on the bottom of the inner wall of the retaining rings 301. The diameter of the seepage hole 303 is precisely designed to be 1-2 mm. This diameter ensures that water seeps out evenly at a suitable rate, preventing water loss from being too rapid while ensuring that the cement surface of the insulator receives sufficient moisture. A threaded rod 304 is rotatably provided at the end of one of the retaining rings 301. A locking nut 305 is provided on the threaded rod 304. The operator can adjust the tightness between the two sets of retaining rings 301 by rotating the locking nut 305 with the screwing arm, so that the retaining rings 301 tightly wrap around the end of the insulator, ensuring the fixed stability of the moisture-retaining reinforcement 3.
[0031] In this embodiment, the inner wall of the retaining ring 301 is provided with an anti-slip texture. This anti-slip texture design effectively increases the friction between the retaining ring 301 and the moisturizing cloth bag 201, ensuring that the retaining ring 301 is firmly installed and preventing the moisturizing reinforcement 3 from sliding due to external force during use, thus ensuring the stability of the moisturizing effect.
[0032] In this embodiment, the inner wall of the locking nut 305 is nested with an annular anti-loosening washer, which can tightly engage with the thread of the threaded rod 304, effectively preventing the locking nut 305 from loosening due to mechanical vibration, thermal expansion and contraction, etc. At the same time, the outer wall of the locking nut 305 extends a screwing arm, which makes it easy for operators to quickly and accurately complete the tightening and loosening of the locking nut 305 with a small torque, significantly improving the efficiency of installation and disassembly.
[0033] In this embodiment, the width of the moisturizing tape 2 is intentionally greater than the width of the moisturizing reinforcement 3. Specifically, the width of the moisturizing tape 2 is 15-20 mm wider than that of the moisturizing reinforcement 3. This setting allows the moisturizing tape 2 to extend beyond the edge of the moisturizing reinforcement 3 when covering the cement surface at the end of the insulator 1, completely wrapping the transition arc surface area between the insulator body and the end. This design not only ensures comprehensive moisturization of the key parts of the insulator 1 and avoids the drying problem caused by insufficient moisturizing area, but also prevents the moisturizing reinforcement 3 from directly contacting the transition arc surface of the insulator 1 by extending the moisturizing tape 2 beyond its edge.
[0034] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0035] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A rod porcelain insulator cement surface moisture retaining structure comprising an insulator (1), characterized in that: The insulator (1) is provided with a moisture-retaining structure at its end, which is composed of a moisture-retaining strip (2) and a moisture-retaining reinforcing member (3). The moisturizing belt (2) includes a moisturizing cloth bag (201), the inside of which is filled with a moisturizing sponge (202), and the end of the moisturizing cloth bag (201) is provided with a hook and loop fastener (203). The moisturizing reinforcement (3) includes two sets of retaining rings (301) arranged in a relatively rotatable manner. The retaining rings (301) are hollow inside. The top of the retaining rings (301) is provided with a water inlet (302) communicating with its cavity. A number of seepage holes (303) are evenly distributed at the bottom of the inner wall of the retaining rings (301). A threaded rod (304) is rotatably provided at the end of one of the retaining rings (301). A locking nut (305) is provided on the threaded rod (304). The locking nut (305) makes the two sets of retaining rings (301) fit together.
2. A rod ceramic insulator cement surface moisture retaining structure according to claim 1, characterized in that: The moisturizing bag (201) is made of non-woven fabric, and the moisturizing sponge (202) is an open-cell polyurethane sponge.
3. A rod ceramic insulator cement surface moisture retaining structure according to claim 2, characterized in that: The hook and loop fastener (203) includes a hook side and a loop side that cooperate with each other, and the hook side and the loop side are respectively disposed on both sides of the end of the moisturizing bag (201).
4. A rod ceramic insulator cement surface moisture retaining structure according to claim 3, wherein: The inner wall of the retaining ring (301) is provided with anti-slip texture.
5. A moisture retaining structure for the surface of a rod ceramic insulator according to claim 4, wherein: A sealing cap is provided at the water inlet (302), and the sealing cap is connected to the water inlet (302) by a fastening.
6. A rod ceramic insulator cement surface moisture retaining structure according to claim 5, wherein: The diameter of the seepage hole (303) is 1-2 mm.
7. A moisture retaining structure for the surface of a rod ceramic insulator according to claim 6, wherein: The inner wall of the locking nut (305) is provided with an anti-loosening washer, and the outer wall of the locking nut (305) is provided with a screwing arm.
8. A rod ceramic insulator cement surface moisture retaining structure according to claim 7, characterized in that: The width of the moisturizing strip (2) is greater than the width of the moisturizing reinforcement (3).