Valve with anti-freezing heat preservation structure

Abstract

The utility model discloses a valve with an anti-freezing heat preservation structure, which comprises a valve body, an anti-freezing mechanism for automatically freezing the valve body is arranged on the outer wall of the valve body, and a hollow tubular heating plate for heating the valve body is arranged on the anti-freezing mechanism. The interior of the hollow tubular heating plate is filled with a heat-conducting medium, an electric heating rod used for heating the heat-conducting medium is arranged in the hollow tubular heating plate, and the outer wall of the hollow tubular heating plate is wrapped with a heat preservation and insulation sleeve. A second control assembly used for automatically controlling the electric heating rods to be started in a certain temperature environment is arranged on the circumferential outer wall of the hollow tubular heating plate. The valve body can be automatically heated according to the external environment temperature, fluid in the valve body can be effectively prevented from being frozen, it is ensured that the valve body is normally opened, closed and adjusted in the low-temperature environment, stable operation of a whole fluid conveying system is maintained, and the system shutdown risk caused by valve body faults is reduced.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, specifically to a valve with an antifreeze and heat-insulating structure. Background Technology

[0002] Valves, as key components for controlling fluid flow, are widely used in many fields such as petroleum, chemical, power, heating, and water supply and drainage. The stability of their performance directly affects the normal operation and safety of the entire system. In cold regions or low-temperature environments, ordinary valves face severe challenges. When the external ambient temperature is too low, the fluid inside the valve is prone to freezing, causing the valve to be unable to open and close normally, and may even damage the valve body due to freezing heave, resulting in serious accidents such as leakage. This not only affects production efficiency but may also cause safety hazards and economic losses. For example, in heating systems in northern winters, valve freezing and cracking may lead to large-scale heating interruptions, causing great inconvenience to residents. In oil pipeline transportation, frozen valves can hinder crude oil transportation, causing huge economic losses.

[0003] A search revealed that patent publication number CN222543184U discloses a leak-proof, antifreeze natural gas valve, comprising a valve pipe, a base, a heating box, and a heating mechanism. The heating box is installed on top of the base and below the valve pipe, with a valve stem installed in the center of the top surface of the valve pipe. The heating mechanism is symmetrically installed on the valve pipe and includes an upper heating plate, a lower heating plate, a return ring, a guide ring, an upper guide plate, and a lower guide plate. The upper and lower heating plates are both arc-shaped structures and are alternately installed on the valve pipe surface. The return ring is installed at the end of the valve pipe and connected to the upper and lower heating plates respectively. The guide ring is installed on the top of the valve pipe and sleeved on the valve stem, with both sides of the guide ring connected to the upper guide plate respectively. This invention features a heating box below the valve pipe, through which heating liquid flows and heats the liquid. After heating, the liquid is discharged through a pump. The heating mechanism, with heating liquid flowing within it, can raise the temperature of the valve pipe, valve core, and valve stem, solving the problem of valve freezing in cold weather.

[0004] To address the issue of valve operation in low-temperature environments, traditional methods often involve wrapping the valve with insulation materials or manually heating it. However, these methods have significant limitations. The insulation effect of the insulation materials is limited and cannot meet the requirements under extremely cold conditions. Manual heating cannot adjust the heating status in a timely manner according to real-time temperature changes, making it difficult to ensure that the valve is always at a suitable operating temperature. Therefore, a valve with an anti-freeze insulation structure is designed. Utility Model Content

[0005] In view of the defects or deficiencies of valves with antifreeze and heat insulation structures, the purpose of this utility model is to provide a valve with an antifreeze and heat insulation structure that can automatically heat the valve body according to the external ambient temperature, effectively prevent the fluid inside the valve body from freezing, ensure that the valve body can open, close and adjust normally in low temperature environments, and maintain the stable operation of the entire fluid conveying system.

[0006] To achieve the above-mentioned objectives, the present invention adopts the following technical solution:

[0007] This utility model provides a valve with an antifreeze and heat preservation structure, including a valve body, and an antifreeze mechanism for automatically preventing the valve body from freezing is provided on the outer wall of the valve body;

[0008] The antifreeze mechanism is equipped with a hollow tubular heating plate for heating the valve body. The hollow tubular heating plate is filled with a heat-conducting medium and has an electric heating rod for heating the heat-conducting medium inside. The outer wall of the hollow tubular heating plate is covered with a heat-insulating sleeve. A second control component is provided on the circumferential outer wall of the hollow tubular heating plate for automatically controlling the start of the electric heating rod under a certain temperature environment. A first control component is provided on the circumferential outer wall of the hollow tubular heating plate for automatically controlling the shut-off of the electric heating rod under a certain temperature environment.

[0009] Preferably, thermally conductive adhesive is provided between the circumferential inner wall of the hollow tubular heating plate and the outer wall of the valve body.

[0010] Preferably, the first control component is provided with a first piston cylinder, and one end of the first piston cylinder is provided on the circumferential outer wall of the hollow tubular heating plate. A first rubber piston is provided inside the first piston cylinder. The first rubber piston is installed at one end of a first piston rod. The other end of the first piston rod passes through the other end of the first piston cylinder and extends to the outside to connect with the first limiting plate.

[0011] Preferably, a spring is sleeved on the outer side of the outer wall of the first piston rod, and the spring is located between the first limiting plate and the first piston cylinder. A first touch switch is installed on the end wall of one end of the inner side of the first piston cylinder. A first gas injection pipe is provided on the circumferential outer wall of the first piston cylinder, and a solenoid valve is provided on the first gas injection pipe. The interior of the first piston cylinder is filled with helium.

[0012] Preferably, the second control component is provided with a second piston cylinder, and one end of the second piston cylinder is installed on the circumferential outer wall of the hollow tubular heating plate. The interior of the second piston cylinder is provided with a partition and a second rubber piston, and the partition is located on one side of the second rubber piston. The second piston rubber is installed on one end of the second piston rod.

[0013] Preferably, the other end of the second piston rod passes through the surface of the partition and is connected to the second limiting plate. A second spring is sleeved on the outer side of the outer wall of the second piston rod, and the second spring is located between the partition and the second rubber piston. A second touch switch is installed on the end wall of one end of the inner side of the second piston cylinder. The cavity between the end wall of the other end of the inner side of the second piston cylinder and the second rubber piston is filled with helium.

[0014] Preferably, an outer shell is provided on the circumferential outer wall of the second piston cylinder, and one end of the outer shell is provided on the circumferential outer wall of the hollow tubular heating plate. A second air injection pipe is provided on the circumferential outer wall of the second piston cylinder, and the other end of the second air injection pipe penetrates through the outer wall of the outer shell and extends to the outside. A solenoid valve is provided on the second air injection pipe. A through hole is opened on the outer wall of the hollow tubular heating plate, and the cavity formed between the inner wall of the outer shell and the outer wall of the second piston cylinder is connected to the through hole.

[0015] Compared with existing technologies, one or more of the above technical solutions have the following beneficial effects:

[0016] In this invention, through the coordinated arrangement of a series of structures such as the first control component, the interior of the first piston cylinder is filled with helium. Due to the thermal expansion and contraction properties of helium, when the external environment cools down, the internal pressure of the first piston cylinder decreases. When the external pressure is greater than the internal pressure of the first piston cylinder, the first rubber piston moves in a certain direction. As the external environment continues to cool down, the internal pressure of the first piston cylinder continues to decrease, and the first rubber piston continues to move in a certain direction. When the first rubber piston touches the first touch switch, the electric heating rod is activated. The electric heating rod heats the heat-conducting medium inside the hollow tubular heating plate, and the heated heat-conducting medium transfers the temperature to the hollow tube. The hollow tubular heating plate transfers heat to the valve body via thermally conductive adhesive, thus heating the valve body automatically according to the external ambient temperature. This effectively prevents the fluid inside the valve from freezing, ensuring the valve body can open, close, and adjust normally in low-temperature environments, maintaining the stable operation of the entire fluid delivery system, reducing the risk of system downtime due to valve failure, eliminating the need for manual heating of the valve body, reducing manpower input, and flexibly responding to temperature changes in different regions and seasons. Whether in frigid winters or environments with large diurnal temperature differences, it can automatically adjust to meet the valve's antifreeze and heat preservation requirements, expanding the valve's application range.

[0017] In this invention, through the coordinated arrangement of a series of structures such as the second control component, the interior of the second piston cylinder is filled with helium. Due to the thermal expansion and contraction properties of helium, when the electric heating rod heats the heat-conducting medium, the heat of the heat-conducting medium inside the outer shell is transferred to the second piston cylinder, causing the internal temperature of the second piston cylinder to rise. When the internal temperature of the second piston cylinder rises, the air pressure in the cavity between the second rubber piston and the end wall at the other end of the second piston cylinder increases. When the air pressure in the cavity between the second rubber piston and the end wall at the other end of the second piston cylinder is greater than the external air pressure, the second rubber piston will move in a certain direction. As the internal temperature of the second piston cylinder continues to rise, the air pressure in the cavity between the second rubber piston and the end wall at the other end of the second piston cylinder continues to increase, and the second rubber piston continues to move in a certain direction. When the second rubber piston touches the second touch switch, the electric heating rod is turned off, preventing the electric heating rod from heating the heat-conducting medium to an excessively high temperature, which could cause valve body malfunction. Attached Figure Description

[0018] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.

[0019] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model.

[0020] Figure 2 This is a cross-sectional view of the antifreeze mechanism of this utility model.

[0021] Figure 3 This is a utility model Figure 2 A magnified schematic diagram of the structure at point A in the diagram.

[0022] Figure 4 This is a utility model Figure 2 A magnified schematic diagram of the structure at point B in the diagram.

[0023] In the picture:

[0024] 100. Valve body;

[0025] 200. Antifreeze mechanism; 210. Hollow tubular heating plate; 211. Through hole; 220. First control component; 230. Second control component; 240. Electric heating rod; 250. Thermal insulation jacket;

[0026] 221. First piston cylinder; 2211. First air injection pipe; 222. First touch switch; 223. First rubber piston; 224. First spring; 225. First piston rod; 2251. First limiting plate;

[0027] 231. Second piston cylinder; 2311. Partition plate; 2312. Second air injection pipe; 232. Outer shell; 233. Second touch switch; 234. Second spring; 235. Second rubber piston; 236. Second piston rod; 2361. Second limit plate. Detailed Implementation

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0029] It should be noted that the following detailed description is exemplary and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0030] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0031] like Figure 1-4 As shown, a valve with an antifreeze and heat-insulating structure includes a valve body 100, characterized in that: an antifreeze mechanism 200 for automatically preventing the valve body 100 from freezing is provided on the outer wall of the valve body 100;

[0032] The antifreeze mechanism 200 is equipped with a hollow tubular heating plate 210 for heating the valve body 100. The hollow tubular heating plate 210 is filled with a heat-conducting medium, which can transfer heat to the hollow tubular heating plate 210. An electric heating rod 240 for heating the heat-conducting medium is installed inside the hollow tubular heating plate 210. The outer wall of the hollow tubular heating plate 210 is covered with a heat-insulating sleeve 250, which can provide heat insulation for the hollow tubular heating plate 210. A second control component 230 for automatically controlling the start of the electric heating rod 240 under a certain temperature environment is provided on the circumferential outer wall of the hollow tubular heating plate 210. A first control component 220 for automatically controlling the shut-off of the electric heating rod 240 under a certain temperature environment is provided on the circumferential outer wall of the hollow tubular heating plate 210.

[0033] A thermally conductive adhesive is provided between the circumferential inner wall of the hollow tubular heating plate 210 and the outer wall of the valve body 100. With the thermally conductive adhesive, the heat on the hollow tubular heating plate 210 can be transferred to the valve body 100.

[0034] The first control component 220 is provided with a first piston cylinder 221, and one end of the first piston cylinder 221 is provided on the circumferential outer wall of the hollow tubular heating plate 210. The first piston cylinder 221 is provided with a first rubber piston 223, which is installed at one end of the first piston rod 225. The other end of the first piston rod 225 passes through the other end of the first piston cylinder 221 and extends to the outside to connect with the first limiting plate 2251.

[0035] A first spring 224 is sleeved on the outer side of the outer wall of the first piston rod 225, and the first spring 224 is located between the first limiting plate 2251 and the first piston cylinder 221. A first touch switch 222 is installed on the end wall of one end of the inner side of the first piston cylinder 221. A first gas injection pipe 2211 is provided on the circumferential outer wall of the first piston cylinder 221, and a solenoid valve is provided on the first gas injection pipe 2211. The first gas injection pipe 2211 can inject helium into the first piston cylinder 221 or discharge helium inside the first piston cylinder 221. The first piston cylinder 221 is filled with helium. Due to the thermal expansion and contraction properties of helium, the gas pressure inside the first piston cylinder 221 changes when the temperature inside the first piston cylinder 221 changes.

[0036] The second control component 230 is provided with a second piston cylinder 231, and one end of the second piston cylinder 231 is installed on the circumferential outer wall of the hollow tubular heating plate 210. The interior of the second piston cylinder 231 is provided with a partition 2311 and a second rubber piston 235, and the partition 2311 is located on one side of the second rubber piston 235. The second piston rubber is installed on one end of the second piston rod 236.

[0037] The other end of the second piston rod 236 passes through the surface of the partition plate 2311 and is connected to the second limiting plate 2361. A second spring 234 is sleeved on the outer side of the outer wall of the second piston rod 236, and the second spring 234 is located between the partition plate 2311 and the second rubber piston 235. A second touch switch 233 is installed on the end wall of one end of the inner side of the second piston cylinder 231. The cavity between the end wall of the other end of the inner side of the second piston cylinder 231 and the second rubber piston 235 is filled with helium.

[0038] A shell 232 is provided on the circumferential outer wall of the second piston cylinder 231, and one end of the shell 232 is provided on the circumferential outer wall of the hollow tubular heating plate 210. A second air injection pipe 2312 is provided on the circumferential outer wall of the second piston cylinder 231, and the other end of the second air injection pipe 2312 penetrates through the outer wall of the shell 232 and extends to the outside. A solenoid valve is provided on the second air injection pipe 2312. The second air injection pipe 2312 allows air to be injected into the second piston cylinder 231. Helium is injected into the interior or the helium inside the second piston cylinder 231 is discharged. A through hole 211 is provided on the outer wall of the hollow tubular heating plate 210. The cavity formed between the inner wall of the outer shell 232 and the outer wall of the second piston cylinder 231 is connected to the through hole 211. With the through hole 211, the heat-conducting medium inside the hollow tubular heating plate 210 will flow into the cavity formed between the inner wall of the outer shell 232 and the outer wall of the second piston cylinder 231 through the through hole 211.

[0039] Working principle: When in use, an external power supply is connected. As the external environment cools down, the first piston cylinder 221, filled with helium, experiences thermal expansion and contraction due to the properties of helium. This causes the internal pressure of the first piston cylinder 221 to decrease. When the external pressure exceeds the internal pressure of the first piston cylinder 221, the first rubber piston 223 moves in a certain direction. As the external environment continues to cool down, the internal pressure of the first piston cylinder 221 continues to decrease, and the first rubber piston 223 continues to move in a certain direction. When the first rubber piston 223 touches the first touch switch 222, the electric heating rod 240 is activated, and the electric heating rod 240 heats the hollow tubular heating plate 2. The internal heat-conducting medium of valve body 100 is heated, and the heated medium transfers its temperature to the hollow tubular heating plate 210. The heat from the hollow tubular heating plate 210 is then transferred to the valve body 100 through the heat-conducting adhesive, thus heating the valve body 100. This invention can automatically heat the valve body 100 according to the external ambient temperature, effectively preventing the fluid inside the valve body 100 from freezing. This ensures that the valve body 100 can open, close, and adjust normally in low-temperature environments, maintaining the stable operation of the entire fluid delivery system, reducing the risk of system downtime due to valve body 100 malfunctions, and eliminating the need for manual heating of the valve body 100, reducing manpower investment and allowing for flexible response to various situations. Temperature changes in the same region and different seasons, whether in frigid winters or environments with large diurnal temperature variations, can automatically adjust to meet the valve's antifreeze and heat preservation requirements, expanding the valve's application range. The second piston cylinder 231 is filled with helium. Due to the thermal expansion and contraction properties of helium, when the electric heating rod 240 heats the heat-conducting medium, the heat from the heat-conducting medium inside the outer shell 232 is transferred to the second piston cylinder 231, causing its internal temperature to rise. When the internal temperature of the second piston cylinder 231 rises, the air pressure in the cavity between the second rubber piston 235 and the end wall at the other end of the second piston cylinder 231 increases. When the air pressure in the cavity between the rubber piston 235 and the end wall at the other end of the second piston cylinder 231 is greater than the external air pressure, the second rubber piston 235 will move in a certain direction. As the internal temperature of the second piston cylinder 231 continues to rise, the air pressure in the cavity between the second rubber piston 235 and the end wall at the other end of the second piston cylinder 231 will continue to increase, and the second rubber piston 235 will continue to move in a certain direction. When the second rubber piston 235 touches the second touch switch 233, the electric heating rod 240 is turned off, thus preventing the electric heating rod 240 from heating the heat-conducting medium to an excessively high temperature, which could cause the valve body 100 to malfunction.

[0040] The above description is merely a preferred embodiment of this utility model and is not intended to limit the invention. For those skilled in the art, various modifications and variations can be made to this invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this invention should be included within the protection scope of this invention.

Claims

1. A valve with an antifreeze and heat-insulating structure, comprising a valve body (100), characterized in that: The outer wall of the valve body (100) is provided with an antifreeze mechanism (200) for automatically preventing the valve body (100) from freezing. The antifreeze mechanism (200) is provided with a hollow tubular heating plate (210) for heating the valve body (100). The hollow tubular heating plate (210) is filled with a heat-conducting medium, and an electric heating rod (240) for heating the heat-conducting medium is provided inside the hollow tubular heating plate (210). The outer wall of the hollow tubular heating plate (210) is covered with a heat-insulating sleeve (250). A second control component (230) for automatically controlling the start of the electric heating rod (240) under a certain temperature environment is provided on the circumferential outer wall of the hollow tubular heating plate (210). A first control component (220) for automatically controlling the shut-off of the electric heating rod (240) under a certain temperature environment is provided on the circumferential outer wall of the hollow tubular heating plate (210).

2. The valve with an antifreeze and heat-insulating structure according to claim 1, characterized in that: Thermally conductive adhesive is provided between the circumferential inner wall of the hollow tubular heating plate (210) and the outer wall of the valve body (100).

3. The valve with an antifreeze and heat-insulating structure according to claim 1, characterized in that: The first control component (220) is provided with a first piston cylinder (221), and one end of the first piston cylinder (221) is provided on the circumferential outer wall of the hollow tubular heating plate (210). The first piston cylinder (221) is provided with a first rubber piston (223) inside. The first rubber piston (223) is installed at one end of the first piston rod (225). The other end of the first piston rod (225) passes through the other end of the first piston cylinder (221) and extends to the outside to connect with the first limiting plate (2251).

4. The valve with an antifreeze and heat-insulating structure according to claim 3, characterized in that: A first spring (224) is sleeved on the outer side of the outer wall of the first piston rod (225), and the first spring (224) is located between the first limiting plate (2251) and the first piston cylinder (221). A first touch switch (222) is installed on the end wall of one end of the inner side of the first piston cylinder (221). A first gas injection pipe (2211) is provided on the circumferential outer wall of the first piston cylinder (221), and a solenoid valve is provided on the first gas injection pipe (2211). The interior of the first piston cylinder (221) is filled with helium.

5. The valve with an antifreeze and heat-insulating structure according to claim 1, characterized in that: The second control component (230) is provided with a second piston cylinder (231), and one end of the second piston cylinder (231) is installed on the circumferential outer wall of the hollow tubular heating plate (210). The interior of the second piston cylinder (231) is provided with a partition (2311) and a second rubber piston (235), and the partition (2311) is located on one side of the second rubber piston (235). The second rubber piston is installed at one end of the second piston rod (236).

6. The valve with an antifreeze and heat-insulating structure according to claim 5, characterized in that: The other end of the second piston rod (236) passes through the surface of the partition (2311) and is connected to the second limiting plate (2361). A second spring (234) is sleeved on the outer side of the outer wall of the second piston rod (236), and the second spring (234) is located between the partition (2311) and the second rubber piston (235). A second touch switch (233) is installed on the end wall of one end of the second piston cylinder (231). The cavity between the end wall of the other end of the second piston cylinder (231) and the second rubber piston (235) is filled with helium.

7. The valve with an antifreeze and heat-insulating structure according to claim 6, characterized in that: The second piston cylinder (231) has an outer shell (232) on its circumferential outer wall, and one end of the outer shell (232) is located on the circumferential outer wall of the hollow tubular heating plate (210). The second piston cylinder (231) has a second air injection pipe (2312) on its circumferential outer wall. The other end of the second air injection pipe (2312) passes through the outer wall of the outer shell (232) and extends to the outside. The second air injection pipe (2312) is equipped with a solenoid valve. The hollow tubular heating plate (210) has a through hole (211) on its outer wall. The cavity formed between the inner wall of the outer shell (232) and the outer wall of the second piston cylinder (231) is connected to the through hole (211).

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