Special valve suitable for extreme environment
By setting a heating and insulation mechanism with a semi-circular sheath embedded with an electric heating wire and a heat-conducting medium on the valve, the problem of poor heating effect in extremely cold environments is solved, achieving efficient heat transfer and insulation effect, and reducing maintenance costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU CHENGDA VALVE ACCESSORIES CO LTD
- Filing Date
- 2025-05-29
- Publication Date
- 2026-05-12
AI Technical Summary
Existing antifreeze valves do not heat up well in extremely cold environments, resulting in reduced insulation performance and affecting their practicality.
The heating and insulation mechanism adopts a semi-circular sheath with embedded heating wire and antifreeze heat-conducting medium. The heating power is monitored and dynamically adjusted in real time by a temperature controller. Heat is transferred using a silicone rubber-based heat-conducting pad, and the design is detachable to reduce gaps and volume.
It efficiently transfers heat at extremely low temperatures, improves insulation efficiency, reduces maintenance costs, is suitable for narrow environments, and ensures normal valve operation.
Smart Images
Figure CN224229408U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of valve technology, and in particular to a special valve suitable for extreme environments. Background Technology
[0002] Antifreeze valves are currently a common type of special valve suitable for extreme environments, mainly because their special design and function can effectively cope with harsh conditions such as low temperatures and freezing. These valves are usually made of low-temperature resistant materials and equipped with heating devices or insulation layers to prevent the medium from freezing, ensuring normal opening, closing, and sealing even in extremely cold environments.
[0003] Currently, a Chinese patent discloses an antifreeze tap water valve (authorization announcement number CN221800781U). This utility model uses a combination of a small water tank, a temperature controller, an electric hot water rod, and an installation ring to facilitate heating the water inside the small water tank to a customized temperature. Through the cooperation of a first conduit, a small water pump, a second conduit, an insulation cover, a metal heat-conducting ring, and a drain pipe, the hot water inside the small water tank can be easily extracted and circulated into the insulation cover. At the same time, the heat is transferred to the valve body through the metal heat-conducting ring, which facilitates heating of the valve body and thus prevents the valve body from freezing.
[0004] The current equipment achieves heat conduction by setting a heating circulation structure outside the insulation cover. However, when operating in extremely cold environments, heat is easily dissipated when the heating medium flows through the No. 1 conduit and the drain pipe, which reduces the actual heating and insulation effect on the valve and thus affects the overall practicality. Utility Model Content
[0005] Therefore, it is necessary to provide a special valve suitable for extreme environments to address the problems of poor heating effect and low practicality of existing antifreeze valves.
[0006] A special valve suitable for extreme environments includes: a manual regulating valve and a heating and heat preservation mechanism. The heating and heat preservation mechanism includes two semi-circular sleeves, which are respectively attached to two opposite surfaces of the manual regulating valve. The two semi-circular sleeves together form a cylinder. A heat-conducting cavity is opened inside the semi-circular sleeve. An electric heating wire is embedded in the heat-conducting cavity. The heat-conducting cavity is filled with an antifreeze heat-conducting medium that is in contact with the electric heating wire.
[0007] In one embodiment, the heating wire is disposed in a serpentine shape in a local cross-sectional shape inside the heat-conducting cavity.
[0008] In one embodiment, a temperature controller electrically connected to the heating wire is fixedly connected to the outer side of the semi-circular sheath, and the detection end of the temperature controller extends into the interior of the heat-conducting cavity.
[0009] In one embodiment, a switching power supply is fixedly connected to the outer side of one of the semi-circular sheaths, and the heating wire and temperature controller are both electrically connected to the switching power supply via wires.
[0010] In one embodiment, a silicone rubber-based thermal pad is provided on the inner side of the semi-circular sheath, and the inner side of the silicone rubber-based thermal pad is in contact with the manual adjustment valve.
[0011] In one embodiment, a mounting sleeve is fixedly connected to the upper surface of the semi-circular sheath, a bolt is inserted into the inner side of one of the mounting sleeves, the shank of the bolt passes through one of the mounting sleeves and extends to the outside of the other mounting sleeve, and the shank of the bolt is threaded with a nut that contacts the other mounting sleeve.
[0012] In one embodiment, a hinge is fixedly connected to the lower surface of one of the semicircular sheaths, and one end of the hinge is fixedly connected to the other semicircular sheath.
[0013] Beneficial effects
[0014] The aforementioned special valves, designed for extreme environments, feature a heating and insulation mechanism that dynamically regulates the temperature of the alkylbenzene-type heat transfer oil within the heat-conducting chamber, efficiently transferring heat to critical valve components at extremely low temperatures. Their compact, fitted design significantly reduces the gap between the heating mechanism and the valve body, improving insulation efficiency while minimizing overall size, making them suitable for confined spaces.
[0015] The semi-circular sheath allows for quick assembly and disassembly via mounting sleeves, bolts, and hinges; it can be disassembled and stored in summer to prevent aging, and only individual parts need to be replaced when damaged, reducing maintenance costs; the flexible sealing properties of the silicone rubber-based thermal pad ensure that it maintains stable heat transfer and insulation performance after repeated assembly and disassembly, improving system reliability and economy. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0018] Figure 2 This is a schematic diagram of the overall structure of the heating and heat preservation mechanism in this utility model;
[0019] Figure 3This is a cross-sectional schematic diagram of the heating and heat preservation mechanism in this utility model;
[0020] Figure 4 This is a partial structural diagram of the heating and heat preservation mechanism in this utility model.
[0021] Figure label:
[0022] 100. Manual regulating valve; 200. Heating and heat preservation mechanism; 210. Semi-circular protective sleeve; 211. Heat conduction cavity; 220. Heating wire; 230. Temperature controller; 240. Switching power supply; 250. Silicone rubber-based thermal pad; 260. Mounting sleeve; 270. Bolt; 280. Nut; 290. Hinge. Detailed Implementation
[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0024] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this specification are for illustrative purposes only and do not represent the only possible implementation.
[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0026] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0027] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this specification belongs. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.
[0028] The following is combined Figures 1-4 This invention describes a special valve suitable for extreme environments.
[0029] In one embodiment, a special valve suitable for extreme environments includes: a manual regulating valve 100 and a heating and insulation mechanism 200. The manual regulating valve 100 includes, but is not limited to, the following structures:
[0030] Valve body: made of gray cast iron, cast steel or stainless steel, serving as the main channel for media flow;
[0031] Valve disc and valve seat: The cylindrical valve disc and the corresponding valve seat form an adjustment window, and the material is mostly brass or stainless steel;
[0032] Valve stem: connects the handle and the valve disc. The material must have torsional strength. Common materials are stainless steel or brass.
[0033] Handle and indicator: The valve disc position is controlled by rotating the handle, and the opening status is displayed.
[0034] Valve cover and packing gland: Ensure the sealing of the valve stem area to prevent media leakage;
[0035] Valve stem nut and nut sleeve: used to secure the connection between the valve stem and the handle.
[0036] The operating principle of the manual regulating valve 100 is as follows: The valve stem is rotated by the handle, causing the cylindrical valve disc to rotate relative to the valve seat, thus changing the window area formed by the two. When the window area increases, the flow rate increases, and vice versa, achieving precise flow regulation.
[0037] like Figure 2 , Figure 3 and Figure 4 As shown, the heating and heat preservation mechanism 200 includes two semi-circular sleeves 210. The two semi-circular sleeves 210 are respectively attached to two opposite surfaces of the manual regulating valve 100. The two semi-circular sleeves 210 together form a cylinder. A heat-conducting cavity 211 is opened inside the semi-circular sleeve 210. An electric heating wire 220 is embedded in the heat-conducting cavity 211. The heat-conducting cavity 211 is filled with an antifreeze heat-conducting medium that is in contact with the electric heating wire 220. The antifreeze heat-conducting medium is an alkylbenzene type heat-conducting oil with a freezing point as low as -50°C. It has excellent low-temperature fluidity and high thermal stability, and can efficiently conduct heat and prevent freezing in extreme environments. The two semi-circular sleeves 210 need to be manufactured by molding to fit the valve body, and sufficient space needs to be preset on the inside to store the silicone rubber-based heat-conducting pad 250. The local cross-sectional shape of the electric heating wire 220 inside the heat-conducting cavity 211 is serpentine.
[0038] A temperature controller 230, electrically connected to the heating wire 220, is fixedly connected to the outer side of the semi-circular sheath 210. The detection end of the temperature controller 230 extends into the interior of the heat-conducting cavity 211. When the temperature controller 230 monitors the temperature of the antifreeze heat-conducting medium in real time, and the real-time temperature of the antifreeze heat-conducting medium is lower than a preset value, the temperature controller 230 will activate the heating wire 220 according to its internal preset program. The heating wire 220 then heats the antifreeze heat-conducting medium, and at the same time, the temperature controller 230 dynamically adjusts the heating power of the heating wire 220 by continuously monitoring the real-time temperature of the antifreeze heat-conducting medium. The heated antifreeze heat-conducting medium transfers heat to the manual regulating valve 100 through the semi-circular sheath 210 and the silicone rubber-based heat-conducting pad 250, thereby ensuring the normal operation of the manual regulating valve 100 under extreme freezing weather conditions. It should be noted that the program for the temperature controller 230 to detect the real-time temperature of the antifreeze heat-conducting medium and to control whether the heating wire 220 is running and the heating power needs to be compiled and implanted by the designer in advance. The specific instructions need to be compiled according to the model of the temperature controller 230 and the heating wire 220 and the corresponding programming software, which will not be elaborated here.
[0039] A switching power supply 240 is fixedly connected to the outside of one of the semi-circular sheaths 210. The heating wire 220 and the temperature controller 230 are electrically connected to the switching power supply 240 through wires. Before using the device, the switching power supply 240 needs to be connected to an external power supply device (such as a socket connected to the mains or a generator). Then, the switching power supply 240 converts the current transmitted by the power supply device into a current that can enable the heating wire 220 and the temperature controller 230 to operate normally, and then supplies power to the heating wire 220 and the temperature controller 230 normally.
[0040] A silicone rubber-based thermal pad 250 is provided on the inner side of the semi-circular sheath 210. The inner side of the silicone rubber-based thermal pad 250 is in contact with the manual regulating valve 100. The silicone rubber-based thermal pad 250 is soft and has good compressibility, which can fill large tolerance gaps. It also has insulation, shock absorption and sealing properties, and supports repeated installation and testing, reducing process tolerance requirements.
[0041] like Figure 2 and Figure 3 As shown, a mounting sleeve 260 is fixedly connected to the upper surface of a semi-circular sheath 210. A bolt 270 is inserted into the inner side of one of the mounting sleeves 260. The shank of the bolt 270 passes through one of the mounting sleeves 260 and extends to the outside of the other mounting sleeve 260. A nut 280 that contacts the other mounting sleeve 260 is threaded onto the shank of the bolt 270. A hinge 290 is fixedly connected to the lower surface of one of the semi-circular sheaths 210. One end of the hinge 290 is fixedly connected to the other semi-circular sheath 210.
[0042] In this embodiment, when the manual regulating valve 100 does not require the heating and insulation mechanism 200, the operator can follow these steps: first, unscrew the nut 280 from the bolt 270; then, remove the bolt 270 from the inside of the mounting sleeve 260; finally, remove the two semi-circular sheaths 210 from the manual regulating valve 100. At this point, the heating and insulation mechanism 200 is completely separated from the manual regulating valve 100. This design has the following advantages: when either the manual regulating valve 100 or the heating and insulation mechanism 200 is damaged, only the damaged component needs to be replaced, without replacing both simultaneously, thus effectively reducing the operating cost of the antifreeze valve. Furthermore, during hot weather such as summer, the operator can disassemble and store the heating and insulation mechanism 200 to prevent it from being exposed to wind and sun for extended periods, reducing the probability of damage.
[0043] Working principle: The temperature controller 230 monitors the temperature of the antifreeze heat-conducting medium in the heat-conducting cavity 211 in real time. When the temperature is detected to be lower than the preset value, the serpentine heating wire 220 is immediately activated and the heating power is dynamically adjusted. The heated antifreeze heat-conducting medium conducts heat evenly through the semi-circular sheath 210, and then the heat is efficiently transferred to the key components of the valve body through the insulating sealing layer of the silicone rubber-based heat-conducting pad 250. During this process, the heating and heat preservation mechanism 200 is integrated on the outside of the manual regulating valve 100. This can effectively reduce the gap between the heating and heat preservation mechanism 200 and the manual regulating valve 100 to improve the heating and heat preservation effect of the manual regulating valve 100. At the same time, this can also reduce the overall size of the heating and heat preservation mechanism 200, making it suitable for narrower scenarios.
[0044] It should be noted that the manual regulating valve 100, heating wire 220, temperature controller 230 and switching power supply 240 mentioned above are all devices with relatively mature existing technology. The specific models can be selected according to actual needs, and will not be elaborated here.
[0045] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0046] The above-described embodiments are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.
Claims
1. A special valve suitable for extreme environments, characterized in that, include: Manual regulating valve (100); A heating and heat preservation mechanism (200) includes two semi-circular sleeves (210). The two semi-circular sleeves (210) are respectively attached to two opposite surfaces of a manual regulating valve (100). The two semi-circular sleeves (210) together form a cylinder. A heat-conducting cavity (211) is provided inside the semi-circular sleeve (210). An electric heating wire (220) is embedded in the heat-conducting cavity (211). The heat-conducting cavity (211) is filled with an antifreeze heat-conducting medium that is in contact with the electric heating wire (220).
2. The special valve for extreme environments according to claim 1, characterized in that, The heating wire (220) is located inside the heat-conducting cavity (211) and has a local cross-sectional shape that is serpentine.
3. The special valve for extreme environments according to claim 1, characterized in that, A temperature controller (230) electrically connected to the heating wire (220) is fixedly connected to the outer side of the semi-circular sheath (210), and the detection end of the temperature controller (230) extends into the interior of the heat-conducting cavity (211).
4. The special valve for extreme environments according to claim 3, characterized in that, A switching power supply (240) is fixedly connected to the outside of one of the semi-circular sheaths (210), and the heating wire (220) and the temperature controller (230) are both electrically connected to the switching power supply (240) through wires.
5. The special valve for extreme environments according to claim 1, characterized in that, The inner side of the semi-circular sheath (210) is provided with a silicone rubber-based thermal pad (250), and the inner side of the silicone rubber-based thermal pad (250) is in contact with the manual regulating valve (100).
6. The special valve for extreme environments according to claim 1, characterized in that, The upper surface of the semi-circular sheath (210) is fixedly connected to a mounting sleeve (260), and a bolt (270) is inserted into the inner side of one of the mounting sleeves (260). The shank of the bolt (270) passes through one of the mounting sleeves (260) and extends to the outside of the other mounting sleeve (260). The shank of the bolt (270) is threadedly connected to a nut (280) that contacts the other mounting sleeve (260).
7. The special valve for extreme environments according to claim 1, characterized in that, A hinge (290) is fixedly connected to the lower surface of one of the semicircular sheaths (210), and one end of the hinge (290) is fixedly connected to the other semicircular sheath (210).