A fabric-reinforced rubber piston suitable for high-pressure environments

Abstract

This utility model relates to the field of rubber piston technology, specifically to a fabric-reinforced rubber piston suitable for high-pressure environments. It includes a piston body with a spiral cooling channel inside, extending spirally along the piston axis. A metal heat-conducting pipe is embedded within the spiral cooling channel, with both ends extending to the piston end face to form a cooling medium interface. This cooling medium interface connects to an external circulation system, allowing the cooling medium to flow through the heat-conducting pipe and achieve forced heat dissipation from the piston. By setting a spiral cooling channel within the piston body and embedding a metal heat-conducting pipe to connect to an external circulation system, forced circulation cooling of the piston is achieved. The spiral cooling channel design extends the coolant flow path, improves cooling uniformity, and avoids rubber aging caused by localized overheating.

Description

Technical Field

[0001] This utility model relates to the field of rubber piston technology, and more specifically, to a fabric-reinforced rubber piston suitable for high-pressure environments. Background Technology

[0002] Rubber pistons operating under high pressure, such as in high-pressure water pumps and hydraulic systems, face severe thermal aging problems.

[0003] Traditional fabric-reinforced rubber pistons lack effective cooling structures, making it difficult to dissipate the heat generated by friction between the rubber and the cylinder wall under high-pressure conditions, leading to a rapid increase in rubber temperature. When the temperature exceeds the rubber material's tolerance limit, it accelerates rubber aging and degradation, manifesting as increased hardness, decreased elasticity, and even cracking, significantly shortening the piston's service life. Simultaneously, high temperatures also degrade the rubber's sealing performance, causing media leakage, affecting system reliability and efficiency, and increasing equipment maintenance costs and downtime due to frequent piston replacements. Ultimately, they cannot meet the demands of high-pressure, high-speed reciprocating motion conditions.

[0004] Therefore, there is an urgent need for a fabric-reinforced rubber piston suitable for high-pressure environments to improve the shortcomings of existing technologies. Utility Model Content

[0005] The purpose of this invention is to provide a fabric-reinforced rubber piston suitable for high-pressure environments. By incorporating a spiral cooling channel within the piston body and embedding a metal heat-conducting pipe connected to an external circulation system, forced circulation cooling of the piston is achieved. The spiral cooling channel design extends the coolant flow path, improves cooling uniformity, and prevents rubber aging caused by localized overheating, thus solving the problems mentioned in the background art.

[0006] Traditional fabric-reinforced rubber pistons lack an effective cooling structure, making it difficult to dissipate the heat generated by friction between the rubber and the cylinder wall under high-pressure conditions, leading to a rapid increase in rubber temperature. When the temperature exceeds the rubber material's tolerance limit, it accelerates the aging and degradation of the rubber, manifesting as increased hardness, decreased elasticity, and cracking, significantly shortening the piston's service life.

[0007] To achieve the above objectives, this utility model provides a fabric-reinforced rubber piston suitable for high-pressure environments, comprising a piston body, wherein a spiral cooling channel is provided inside the piston body, and the spiral cooling channel extends spirally along the piston axis;

[0008] The spiral cooling channel is embedded with a metal heat pipe, and the two ends of the heat pipe extend to the piston end face to form a cooling medium interface.

[0009] The cooling medium interface is used to connect to an external circulation system, allowing the cooling medium to flow through the heat pipe to achieve forced heat dissipation of the piston.

[0010] In the above technical solution, the external circulation system delivers cooling medium to the heat-conducting pipes within the spiral cooling channel through a cooling medium interface. The cooling medium flows within the spiral heat-conducting pipes, undergoing thorough heat exchange with the piston body to remove heat. Because the spiral cooling channel extends axially along the piston, it increases the flow path and heat exchange area of ​​the cooling medium, improving cooling efficiency. Simultaneously, the metal heat-conducting pipes possess excellent thermal conductivity, enabling rapid transfer of heat from the piston's interior to the cooling medium, achieving forced heat dissipation of the piston, effectively reducing the piston's operating temperature under high-pressure environments, and extending the piston's service life.

[0011] Building upon this, the outer wall of the copper tube is tightly bonded to the inner wall of the spiral cooling channel using a high-temperature resistant adhesive. This utilizes copper's high thermal conductivity to rapidly transfer heat from the piston to the coolant. Furthermore, the high-temperature adhesive ensures no relative displacement between the copper tube and the rubber substrate under high pressure and high temperature conditions, preventing structural damage caused by vibration or thermal expansion and contraction. The quick-connect fitting at the cooling medium interface features a built-in sealing ring design, ensuring stable operation of the cooling system under high pressure.

[0012] In another technical solution, the cross-section of the spiral cooling channel is elliptical, with its major axis perpendicular to the radial direction of the piston. The piston body is made of fabric-reinforced rubber, which consists of a rubber layer and a reinforcing fiber layer embedded within the rubber layer.

[0013] This technical solution improves cooling efficiency and structural strength through structural optimization of the elliptical cross-section spiral cooling channel: the expansion in the long axis direction increases the contact area of ​​the coolant compared to a circular cross-section, enhancing the convective heat transfer effect; the contraction in the short axis direction maintains the radial stiffness of the piston, effectively balancing cooling requirements and structural stability under high pressure.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] This fabric-reinforced rubber piston, suitable for high-pressure environments, achieves forced circulation cooling of the piston by incorporating a spiral cooling channel within the piston body and embedding a metal heat-conducting pipe connected to an external circulation system. The spiral cooling channel design extends the coolant flow path, improves cooling uniformity, and prevents rubber aging caused by localized overheating.

[0016] The heat pipe utilizes a combination of copper tubing and high-temperature resistant adhesive to ensure a firm bond between the heat pipe and the rubber substrate under high-pressure vibration conditions, resisting pressure impacts without loosening. The quick-connect fitting and built-in sealing ring at the coolant interface effectively prevent system malfunctions caused by coolant leakage. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the embodiment;

[0018] Figure 2 This is a schematic diagram of the overall cross-sectional structure of the outer shell in the embodiment;

[0019] Figure 3 This is a schematic diagram of the copper tube structure in an embodiment.

[0020] The meanings of the labels in the diagram are as follows:

[0021] 100. Piston body; 110. Cooling channel; 120. Cooling medium interface; 130. Heat pipe. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figures 1-3 As shown, this embodiment provides a fabric-reinforced rubber piston suitable for high-pressure environments, including a piston body 100, and a spiral cooling channel 110 provided inside the piston body 100, which extends spirally along the piston axis.

[0024] The spiral cooling channel 110 is embedded with a metal heat pipe 130, and the two ends of the heat pipe 130 extend to the piston end face to form a cooling medium interface 120.

[0025] The cooling medium interface 120 is used to connect to an external circulation system, so that the cooling medium flows through the heat pipe 130 to achieve forced heat dissipation of the piston.

[0026] During implementation, the piston body 100 reciprocates under high pressure, generating heat through friction with the cylinder wall, causing its temperature to rise. At this time, the external circulation system delivers cooling medium to the metal heat-conducting pipe 130 within the spiral cooling channel 110 via the cooling medium interface 120. The cooling medium flows along the spirally extending heat-conducting pipe 130. The spiral structure increases the contact path and area between the cooling medium and the piston body 100. The metal heat-conducting pipe 130, with its excellent thermal conductivity, quickly transfers the heat generated by the piston body 100 to the cooling medium. The cooling medium, carrying the heat, flows back to the external circulation system to complete heat dissipation, achieving forced cooling of the piston and maintaining its temperature within the tolerance range of the rubber material. This effectively slows down rubber aging and degradation, extending the piston's service life.

[0027] See Figure 2As shown, the copper tube is tightly bonded to the inner wall of the spiral cooling channel 110 using a high-temperature resistant adhesive, forming an efficient heat conduction path to ensure rapid heat transfer from the piston to the coolant. The quick-connect joint at the cooling medium interface 120 employs a double-seal design, with an internal perfluoroether rubber sealing ring and a metal skeleton support to reduce leakage. In the fabric-reinforced rubber structure, the aramid fiber reinforcing layer and the nitrile rubber layer form an interpenetrating network through a molding process, enhancing the piston's compressive strength and achieving a synergistic effect of high-pressure sealing and long-term heat dissipation.

[0028] Figure 3 In this design, the elliptical spiral cooling channel 110 enhances performance through synergistic optimization of fluid mechanics and structural mechanics: the long axis design perpendicular to the piston radial direction increases the coolant contact area; the structural contraction in the short axis direction improves the piston radial stiffness. The coolant velocity distribution within the elliptical cross-section channel is more uniform, and combined with the rapid heat conduction of the copper heat pipe 130, the standard deviation of the overall piston temperature field is reduced, effectively suppressing rubber aging caused by local overheating.

[0029] In this embodiment, a fabric-reinforced rubber piston suitable for high-pressure environments generates significant heat during reciprocating motion of the piston body 100, resulting in rapid rubber aging due to friction with the cylinder wall. To address this, an elliptical spiral cooling channel 110 extending axially within the piston body 100, in conjunction with an external cooling device, cools the piston. The long axis design, perpendicular to the piston's radial direction, increases the cooling area. An external circulation system delivers cooling medium through a cooling medium interface 120 to the metal heat-conducting pipe 130 embedded within the spiral cooling channel 110. As the cooling medium flows within the pipe, it fully absorbs the heat conducted from the piston body 100 and then flows back to the external circulation system to dissipate heat, achieving forced cooling of the piston and effectively reducing its operating temperature.

[0030] Meanwhile, the copper tubes are tightly bonded to the inner wall of the spiral cooling channel 110 using a high-temperature resistant adhesive, ensuring a stable connection and efficient heat transfer under high temperature and pressure conditions. The quick-connect joint at the cooling medium interface 120 has a built-in sealing ring to effectively prevent cooling medium leakage under high pressure. The piston body 100 is made of fabric-reinforced rubber, with reinforcing fiber layers embedded in the rubber layer, improving the overall compressive strength and stability of the piston. This allows the piston to work stably under high pressure and extends its service life.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A fabric-reinforced rubber piston suitable for high-pressure environments, characterized in that: Includes a piston body (100), wherein the piston body (100) is provided with a spiral cooling channel (110) inside, the spiral cooling channel (110) extending spirally along the piston axis; The spiral cooling channel (110) is embedded with a metal heat pipe (130), and the two ends of the heat pipe (130) extend to the piston end face to form a cooling medium interface (120). The cooling medium interface (120) is used to connect to an external circulation system, so that the cooling medium flows through the heat pipe (130) to achieve forced heat dissipation of the piston.

2. The fabric-reinforced rubber piston suitable for high-pressure environments according to claim 1, characterized in that: The heat pipe (130) is a copper pipe, and its outer wall is tightly bonded to the inner wall of the spiral cooling channel (110) with a high-temperature resistant adhesive.

3. The fabric-reinforced rubber piston suitable for high-pressure environments according to claim 2, characterized in that: The cooling medium interface (120) is provided with a quick-connect connector, which has a built-in sealing ring to prevent cooling medium leakage under high pressure.

4. The fabric-reinforced rubber piston suitable for high-pressure environments according to claim 1, characterized in that: The cross-section of the spiral cooling channel (110) is elliptical, with its major axis perpendicular to the radial direction of the piston.

5. The fabric-reinforced rubber piston suitable for high-pressure environments according to claim 1, characterized in that: The piston body (100) is made of fabric-reinforced rubber, which consists of a rubber layer and a reinforcing fiber layer embedded in the rubber layer.

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