Temperature measuring device for reducing freezing risk of new energy outdoor oil tank pipe base
By using a heating element in the temperature measuring device of the oil-immersed transformer to prevent water from freezing, the problem of damage to the temperature measuring probe and tube socket was solved, and the temperature measuring efficiency and cold resistance of the device were improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-19
- Publication Date
- 2026-04-03
AI Technical Summary
When the temperature measuring device of an existing oil-immersed transformer is shut down during the cold season, the water inside the tube socket is prone to freezing, which can damage the temperature measuring probe and the tube socket.
The first heating element heats the inside of the heating tube seat, and the second heating element heats the outside of the temperature probe to prevent water from freezing. Heat is transferred through thermal conduction, which shortens the preheating time of the temperature probe.
This effectively avoids damage to the temperature probe and socket, improves temperature measurement efficiency, and shortens testing time.
Smart Images
Figure CN224081083U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of transformer technology, and in particular to a temperature measuring device for reducing the risk of icing on the pipe socket of outdoor oil tanks in new energy vehicles. Background Technology
[0002] Oil-immersed transformers use transformer oil as their primary insulation and cooling medium. During operation, the heat generated by the windings is transferred to the transformer oil. To ensure the safe operation of oil-immersed transformers, it is necessary to measure the temperature of the transformer oil to promptly detect internal problems such as localized overheating, ensuring that the transformer operates within its normal temperature range and maintaining its safety and stability.
[0003] Temperature measurement devices are typically used to measure the temperature of oil-immersed transformers. Oil-immersed transformers include an oil tank. Because hot oil has a low density, it will gradually rise from the bottom of the tank to the top. Therefore, the temperature measurement device is usually located on the top of the oil-immersed transformer. The temperature measurement device includes a temperature probe and a socket. The socket is set on the top of the oil tank of the oil-immersed transformer. The temperature probe is placed in the socket to measure the temperature of the top oil of the oil-immersed transformer.
[0004] Because the temperature measuring device is located on the top layer of the oil-immersed transformer and is vertical, rainwater may flow into the tube socket during actual operation. Since the density of transformer oil is generally less than that of water, rainwater will gradually accumulate at the bottom of the tube socket, pushing the transformer oil upwards. When enough rainwater flows in, the transformer oil will be completely squeezed out. In colder seasons, when the oil-immersed transformer is operating normally, the oil temperature is above 0°C, and water, being liquid, will not show obvious abnormalities. However, when the oil-immersed transformer is shut down, the water in the tube socket will freeze. The increased volume of the frozen water will damage the temperature measuring probe and may even cause the tube socket to crack.
[0005] Therefore, there is an urgent need for a temperature measuring device to reduce the risk of icing on the fuel tank pipe socket of new energy vehicles in order to solve the above problems. Utility Model Content
[0006] The purpose of this invention is to provide a temperature measuring device that reduces the risk of icing in the outdoor fuel tank pipe seat of new energy vehicles, thereby preventing the water inside the pipe seat from freezing and thus avoiding damage to the temperature measuring probe and the pipe seat.
[0007] To achieve the above objectives, the following technical solution is provided:
[0008] Temperature measurement devices to reduce the risk of icing on outdoor fuel tank pipe sockets of new energy vehicles include:
[0009] The tube socket has a accommodating space;
[0010] A temperature measuring mechanism, comprising a temperature measuring probe, at least a portion of which is located within the accommodating space; and
[0011] A first heating element and / or a second heating element, wherein at least a portion of the first heating element is located within the tube seat, and the second heating element is configured to heat the portion of the temperature probe located outside the tube seat.
[0012] As an optional solution, the portion of the first heating element located inside the tube seat is spirally arranged.
[0013] As an optional solution, there may be multiple first heating elements, which are arranged at intervals around the periphery of the temperature measuring probe.
[0014] As an optional solution, the temperature measuring device for reducing the risk of icing on the outdoor fuel tank pipe socket of new energy vehicles also includes:
[0015] The fastener, through which the temperature probe passes, is connected to the pipe seat.
[0016] As an optional solution, the temperature measuring device for reducing the risk of icing on the outdoor fuel tank pipe socket of new energy vehicles also includes:
[0017] A seal is disposed between the fastener and the pipe seat.
[0018] As an optional solution, the temperature measuring device for reducing the risk of icing on the outdoor fuel tank pipe socket of new energy vehicles also includes:
[0019] The first insulation layer is disposed on the periphery of the pipe seat and located inside the seal.
[0020] As an optional solution, the temperature measuring device for reducing the risk of icing on the outdoor fuel tank pipe socket of new energy vehicles also includes:
[0021] The second insulation layer is disposed on the outside of the second heating element.
[0022] As an optional solution, the accommodating space is filled with thermally conductive silicone grease.
[0023] As an optional option, the tube seat is made of aluminum alloy.
[0024] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0025] This utility model provides a temperature measuring device for reducing the risk of icing on the pipe socket of an outdoor oil tank in new energy vehicles. When the oil-immersed transformer is shut down and the ambient temperature is less than or equal to 0 degrees Celsius, the first heating element heats the inside of the pipe socket to prevent water flowing into the pipe socket from freezing, thereby preventing damage to the temperature probe and the pipe socket. The second heating element heats the part of the temperature probe located outside the pipe socket. On the one hand, the heat generated by the second heating element can be transferred to the pipe socket through heat conduction to prevent water flowing into the pipe socket from freezing. On the other hand, it can preheat the temperature probe, shortening the time required for the temperature probe to rise from the ambient temperature to the test temperature when the oil-immersed transformer starts working, thus shortening the test time and improving the test efficiency. Attached Figure Description
[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.
[0027] Figure 1 This is a schematic diagram of the temperature measuring device for reducing the risk of icing on the pipe seat of outdoor fuel tanks for new energy vehicles, provided in an embodiment of this utility model.
[0028] Figure label:
[0029] 100. Temperature measurement device to reduce the risk of icing on the fuel tank pipe seat of new energy vehicles;
[0030] 1. Pipe base; 2. Temperature measuring mechanism; 21. Temperature probe; 22. Conduit; 3. First heating element; 4. Second heating element; 5. Fastener; 6. Sealing element; 7. First insulation layer; 8. Second insulation layer; 9. Thermal grease;
[0031] 200. Fuel tank. Detailed Implementation
[0032] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.
[0033] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.
[0034] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0035] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0036] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via 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 that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0037] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.
[0038] To ensure the safe operation of oil-immersed transformers, it is necessary to measure the temperature of the transformer oil in order to promptly detect problems inside the transformer, such as localized overheating, and ensure that the oil-immersed transformer operates within the normal temperature range, thus maintaining its safety and stability.
[0039] Temperature measurement of oil-immersed transformers is typically achieved using a temperature measuring device 100, which reduces the risk of icing on the pipe sockets of outdoor oil tanks in new energy applications. Figure 1 As shown, the oil-immersed transformer includes an oil tank 200. Due to the low density of hot oil, it gradually rises from the oil tank 200 to the top layer of the oil tank 200. Therefore, the temperature measuring device 100 for reducing the risk of icing on the pipe socket of the outdoor oil tank of the new energy vehicle is usually located on the top layer of the oil-immersed transformer. The temperature measuring device 100 for reducing the risk of icing on the pipe socket of the outdoor oil tank of the new energy vehicle includes a pipe socket 1 and a temperature measuring mechanism 2. The pipe socket 1 has a receiving space. The pipe socket 1 is set on the top of the oil tank 200 of the oil-immersed transformer and extends in the vertical direction. The temperature measuring mechanism 2 can be placed in the receiving space of the pipe socket 1 to measure the top layer oil temperature of the oil-immersed transformer.
[0040] The temperature measuring mechanism 2 includes a temperature measuring probe 21, a conduit 22, and a meter. At least a portion of the temperature measuring probe 21 can be inserted into the tube seat 1. The temperature measuring probe 21 and the meter are connected by a metal wire. The conduit 22 covers the outer periphery of the metal wire to prevent the metal wire from being damaged or interfered with by external factors.
[0041] The tube socket 1 is filled with transformer oil to conduct heat. The temperature probe 21 is placed inside the tube socket 1, and the temperature detected by the temperature probe 21 is displayed on the meter to complete the temperature measurement process. The temperature measuring mechanism 2 can be an existing thermocouple thermometer or resistance thermometer. Its specific structure and working principle are existing technologies and will not be described in detail in this embodiment.
[0042] Optionally, the temperature measuring device 100 for reducing the risk of icing on the outdoor fuel tank pipe seat of new energy vehicles also includes a fastener 5, a temperature measuring probe 21 passing through the fastener 5, and the fastener 5 being connected to the pipe seat 1 to achieve a stable connection between the temperature measuring probe 21 and the pipe seat 1.
[0043] In this embodiment, the fastener 5 is a nut with external threads, and the pipe seat 1 also has external threads. The fastener 5 is threadedly connected to the pipe seat 1, facilitating quick assembly and disassembly of the fastener 5 and the pipe seat 1. In other embodiments, the fastener 5 can be a snap-fit or interference fit with the pipe seat 1.
[0044] Because the temperature measuring device 100, which reduces the risk of icing in the outdoor oil tank socket of new energy transformers, is located on the top layer of the oil-immersed transformer and is in a vertical position, rainwater can flow into the socket 1 through the gap between the fastener 5 and the socket 1 during actual operation. Since the density of existing transformer oil is generally less than that of water, rainwater will gradually accumulate at the bottom of the socket 1, pushing the transformer oil upwards. When enough rainwater flows in, the transformer oil will be completely squeezed out. In cold seasons, when the oil-immersed transformer is operating normally, the oil temperature is above 0℃, and water, being liquid, will not show obvious abnormalities. However, when the oil-immersed transformer is shut down, the water in the socket 1 will freeze. The increased volume of the frozen water will damage the temperature measuring probe 21 and may even cause the socket 1 to crack.
[0045] To solve the above problems, such as Figure 1 As shown, the temperature measuring device 100 for reducing the risk of icing in the outdoor oil tank socket of new energy vehicles provided in this embodiment also includes a first heating element 3 and / or a second heating element 4. At least a portion of the first heating element 3 is located inside the socket 1, and the second heating element 4 is disposed on the side of the fastener 5 away from the socket 1 and is configured to heat the portion of the temperature measuring probe 21 located outside the socket 1. When the oil-immersed transformer is shut down and the ambient temperature is less than or equal to 0 degrees Celsius, the first heating element 3, which is at least partially located inside the socket 1, heats the inside of the socket 1 to prevent water flowing into the socket 1 from freezing, thereby preventing damage to the temperature measuring probe 21 and the socket 1. The second heating element 4 heats the portion of the temperature measuring probe 21 located outside the socket 1. On the one hand, the heat generated by the second heating element 4 can be transferred to the socket 1 by heat conduction to prevent water flowing into the socket 1 from freezing. On the other hand, it can preheat the temperature measuring probe 21, shortening the time required for the temperature probe to rise from the ambient temperature to the test temperature when the oil-immersed transformer starts working, thus shortening the test time and improving the test efficiency.
[0046] The first heating element 3 can be a heating wire, with one end threaded through the fastener 5 and extending into the tube seat 1, and the other end connected to a power source. A switch is also included between the power source and the heating wire, controlling the switching on and off of the heating wire and adjusting its power to adapt to different ambient temperatures and temperature measurement requirements. It should be noted that the heating wire and switch are existing technologies; any heating wire and switch capable of achieving the above functions can be used in this embodiment. The second heating element 4 can be an existing electric heating plate.
[0047] Optionally, the portion of the first heating element 3 located inside the tube seat 1 is spirally arranged to increase the area of the first heating element 3 inside the tube seat 1, thereby improving the heating effect of the first heating element 3.
[0048] Optionally, there may be multiple first heating elements 3, which are arranged at intervals around the periphery of the temperature probe 21 to further improve the heating effect.
[0049] Optionally, the temperature measuring device 100 for reducing the risk of icing on the outdoor fuel tank pipe seat of new energy vehicles also includes a sealing element 6. The sealing element 6 is disposed between the fastener 5 and the pipe seat 1 to improve the sealing between the fastener 5 and the pipe seat 1 and prevent water, dust and other impurities from entering the pipe seat 1.
[0050] Optionally, the seal 6 is made of materials such as NBR (Nitrile Butadiene Rubber), fluororubber, silicone rubber, ethylene propylene rubber, or chlorohydrin rubber. These materials have good elasticity and good sealing performance.
[0051] Optionally, the temperature measuring device 100 for reducing the risk of icing on the outdoor fuel tank pipe seat of new energy vehicles also includes a first insulation layer 7, which is disposed on the periphery of the pipe seat 1 and located inside the seal 6 to reduce heat loss from the pipe seat 1.
[0052] Optionally, the first insulation layer 7 is made of materials such as rock wool, extruded polystyrene board, rubber and plastic, aluminum silicate, polyurethane foam or glass wool, which have good thermal insulation performance.
[0053] Optionally, the temperature measuring device 100 for reducing the risk of icing on the outdoor fuel tank pipe seat of new energy vehicles also includes a second insulation layer 8, which is disposed on the outside of the second heating element 4 to reduce the heat loss of the second heating element 4.
[0054] Optionally, the second insulation layer 8 is made of materials such as rock wool, extruded polystyrene board, rubber and plastic, aluminum silicate, polyurethane foam or glass wool, which have good thermal insulation performance.
[0055] Optionally, the receiving space of the tube socket 1 is filled with thermally conductive grease 9. The thermally conductive grease 9 remains in a grease state for a long time and has fluidity, so that the temperature probe 21 can be inserted to measure the temperature. At the same time, the density of the thermally conductive grease 9 is greater than that of water and it is immiscible with water. Since the tube socket 1 is filled with the corresponding thermally conductive grease 9, water cannot enter the tube socket 1, which can solve the problem caused by water entering the tube socket 1.
[0056] The thermal grease 9 used in this embodiment has a thermal conductivity of 1.094 W / (M·K) and a density of 2.8 g / cm³. 3 The operating temperature is greater than or equal to -50℃ and less than or equal to 200℃.
[0057] Optionally, the tube base 1 is made of aluminum alloy, which has good thermal conductivity to ensure the accuracy of temperature measurement by the temperature probe 21.
[0058] Note that in the description of this specification, references to terms such as "some embodiments," "other embodiments," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0059] The above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the protection scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention. The scope of the present invention is determined by the scope of the appended claims.
Claims
1. A temperature measuring device for reducing the risk of freezing of the pipe seat of a new energy outdoor oil tank, characterized in that, The temperature measuring device for reducing the risk of freezing of the pipe seat of a new energy outdoor oil tank comprises the following components: a pipe seat (1) having a containing space; a temperature measuring mechanism (2) comprising a temperature measuring probe (21), at least a part of the temperature measuring probe (21) being located in the containing space; and a first heating member (3) and / or a second heating member (4), at least a part of the first heating member (3) being located in the pipe seat (1), the second heating member (4) being configured to heat the part of the temperature measuring probe (21) located outside the pipe seat (1).
2. The temperature measuring device for reducing the risk of freezing of the pipe seat of a new energy outdoor oil tank according to claim 1, characterized in that, The part of the first heating member (3) located in the pipe seat (1) is arranged in a spiral.
3. The temperature measuring device for reducing the risk of icing of the pipe seat of a new energy outdoor oil tank according to claim 1, characterized in that, The number of the first heating members (3) is multiple, and the multiple first heating members (3) are arranged at intervals around the circumferential side of the temperature measuring probe (21).
4. The temperature measuring device for reducing the risk of icing of the pipe seat of a new energy outdoor oil tank according to claim 1, characterized in that, The temperature measuring device for reducing the risk of freezing of the pipe seat of a new energy outdoor oil tank further comprises: a fastener (5), the temperature measuring probe (21) being arranged through the fastener (5), and the fastener (5) being connected with the pipe seat (1).
5. The temperature measuring device for reducing the risk of freezing of the pipe seat of a new energy outdoor oil tank according to claim 4, characterized in that, The temperature measuring device for reducing the risk of freezing of the pipe seat of a new energy outdoor oil tank further comprises: a sealing member (6) arranged between the fastener (5) and the pipe seat (1).
6. The temperature measuring device for reducing the risk of freezing of the pipe seat of a new energy outdoor oil tank according to claim 5, characterized in that, The temperature measuring device for reducing the risk of freezing of the pipe seat of a new energy outdoor oil tank further comprises: a first heat preservation layer (7) arranged on the circumferential side of the pipe seat (1) and located on the inner side of the sealing member (6).
7. The temperature measuring device for reducing the risk of icing of the pipe seat of a new energy outdoor oil tank according to claim 1, characterized in that, The temperature measuring device for reducing the risk of freezing of the pipe seat of a new energy outdoor oil tank further comprises: a second heat preservation layer (8) arranged on the outer side of the second heating member (4).
8. The temperature measuring device for reducing the risk of freezing of the pipe seat of a new energy outdoor oil tank according to any one of claims 1-7, characterized in that, The containing space is filled with heat-conducting silicone grease (9).
9. The temperature measuring device for reducing the risk of freezing of the pipe seat of a new energy outdoor oil tank according to any one of claims 1-7, characterized in that, The pipe seat (1) is made of aluminum alloy material.