Heating device in high-temperature and high-humidity environment

Abstract

The utility model relates to a liquid heating device, in particular to a heating device in a high-temperature and high-humidity environment, which comprises a fixing mechanism and a heating mechanism, the fixing mechanism comprises a cover plate and a connecting part, the cover plate is mounted on a tank cover of a normal-pressure hot water tank, and the connecting part is connected with the cover plate; the heating pipe is provided with a first end and a second end which are oppositely arranged, the first end of the heating pipe penetrates through the cover plate and is connected with the connecting part, the connecting part is connected with external heat supply equipment, and the second end of the heating pipe extends into and penetrates through at least part of the inner cavity of the tank body of the normal-pressure hot water tank; wherein the first end, close to the tank cover, of the heating pipe is coated with a protective sleeve, and the protective sleeve has enough coating length, so that when liquid is poured into the tank body and is prepared to be heated, the liquid level of the liquid is located at the position of the protective sleeve. According to the structure of the utility model, part of the heating pipe can be coated with the protective sleeve, so that the heating pipe can be effectively prevented from being corroded by water vapor in the heating process.

Description

Technical Field

[0001] The utility model relates to a liquid heating device, in particular to a heating device for use in a high-temperature and high-humidity environment. Background Art

[0002] The description in this section merely provides background information related to the disclosure of the present utility model and does not constitute prior art.

[0003] Currently, the method for heating the liquid in the atmospheric pressure hot water tank is generally to insert the heating tube into the atmospheric pressure hot water tank and directly start the heating. However, during the heating process, when the liquid temperature rises to a certain range, such as water rising to 90 degrees Celsius, a large amount of water vapor will be generated between the liquid surface and the tank cover. Water vapor is highly corrosive to metal structures. Therefore, the heating tube exposed between the liquid surface and the bottom of the tank cover is extremely susceptible to corrosion, resulting in rust on the surface and even direct damage to the heating tube, affecting the heating efficiency.

[0004] It should be noted that the above technical background is merely for the purpose of providing a clear and complete description of the technical solutions of the present invention and to facilitate understanding by those skilled in the art. It should not be assumed that the above technical solutions are well known to those skilled in the art simply because they are described in the background technology section of the present invention. Utility Model Content

[0005] The purpose of the utility model is to provide a heating device in a high temperature and high humidity environment, which can effectively prevent the corrosion of the heating tube by water vapor during the heating process by arranging a protective sleeve outside a part of the heating tube.

[0006] To achieve the above-mentioned object, the present invention discloses a heating device for a high-temperature and high-humidity environment, which is used to heat a normal-pressure hot water tank. The normal-pressure hot water tank includes a tank body and a tank cover provided on the top of the tank body. The tank body is used to hold liquid to be heated. The heating device for a high-temperature and high-humidity environment includes:

[0007] A fixing mechanism, the fixing mechanism comprising a cover plate and a connecting portion, the cover plate being mounted on the tank cover of the normal pressure hot water tank, the connecting portion being connected to the cover plate;

[0008] a heating pipe having a first end and a second end oppositely disposed, the first end of the heating pipe passing through the cover plate and connected to the connecting portion, the connecting portion being connected to an external heating device, and the second end of the heating pipe extending into and passing through at least a portion of the inner cavity of the tank body of the normal pressure hot water tank;

[0009] The heating tube is covered with a protective sleeve at the first end near the tank cover, and the protective sleeve has a sufficient covering length so that when the liquid is poured into the tank body and is ready to be heated, the liquid level is at the position of the protective sleeve.

[0010] Furthermore, the protective sleeve is configured as a Teflon sleeve.

[0011] Furthermore, the inner diameter of the protective sleeve matches the outer diameter of the heating tube, so that the protective sleeve is tightly wrapped around the heating tube, preventing external water vapor from penetrating the tube wall of the heating tube inside the protective sleeve.

[0012] Furthermore, the heating tube is made of 316 stainless steel.

[0013] Furthermore, the heating pipe is configured as a seamless steel pipe structure.

[0014] Furthermore, the cover plate is connected to a side wall of the tank cover of the normal-pressure hot water tank away from the interior of the tank body, and the connecting portion is arranged toward the outside of the normal-pressure hot water tank.

[0015] Furthermore, the end of the protective sleeve is arranged adjacent to the bottom surface of the cover plate.

[0016] Furthermore, the protective sleeve is arranged to avoid an effective heating section of the heating tube for heating the liquid.

[0017] By means of the above technical solution, the beneficial effects of the present invention are as follows:

[0018] The heating device of the present invention is used in a high-temperature and high-humidity environment. A protective sleeve is provided to cover part of the heating tube. When the liquid in the tank is heated, water vapor is generated between the liquid surface and the tank cover. Since one end of the protective sleeve is close to the top and the other end is immersed below the liquid surface, the heating tube between the liquid surface and the tank cover is well protected, thereby avoiding corrosion caused by erosion by water vapor and affecting the service life of the heating device.

[0019] To further understand the features and technical contents of the present invention, please refer to the following detailed description and drawings of the present invention. However, the drawings provided are for reference and illustration only and are not intended to limit the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of this specification or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments recorded in this specification. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0021] Figure 1 This is a front view of a heating device in a high temperature and high humidity environment provided by an embodiment of this specification;

[0022] Figure 2 This is a schematic diagram of a use scenario of a heating device in a high temperature and high humidity environment provided by an embodiment of this specification;

[0023] In the figure: 100, liquid; 101, liquid level; 1, normal pressure hot water tank; 11, tank body; 12, tank cover; 2, fixing mechanism; 21, cover plate; 22, connecting part; 3, heating tube; 4, protective sleeve. DETAILED DESCRIPTION

[0024] To help those skilled in the art better understand the technical solutions in this specification, the following will provide a clear and complete description of the technical solutions in the embodiments of this specification, in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of this specification, not all of them. All other embodiments derived by those skilled in the art based on the embodiments in this specification without creative effort shall fall within the scope of protection of this specification.

[0025] The following is an explanation of the implementation of the present invention through specific specific embodiments. Those skilled in the art can understand the advantages and effects of the present invention from the contents disclosed in this specification. The present invention can be implemented or applied through other different specific embodiments, and the details in this specification can also be modified and changed based on different viewpoints and applications without departing from the concept of the present invention. In addition, the drawings of the present invention are only simple schematic illustrations and are not depicted according to actual dimensions. It is stated in advance. The following implementation methods will further explain the relevant technical contents of the present invention in detail, but the disclosed contents are not intended to limit the scope of protection of the present invention.

[0026] It should be understood that although terms such as "first," "second," and "third" may be used herein to describe various components or signals, these components or signals should not be limited by these terms. These terms are primarily used to distinguish one component from another, or one signal from another. In addition, the term "or" as used herein may include any one or more combinations of the associated listed items, as appropriate.

[0027] See Figure 1-2 , is a heating device for a high temperature and high humidity environment of this embodiment, used to heat a normal pressure hot water tank 1, wherein the normal pressure hot water tank 1 includes a tank body 11 and a tank cover 12 provided on the top of the tank body 11, and the tank body 11 is used to hold a liquid 100 to be heated; wherein the heating device for a high temperature and high humidity environment includes:

[0028] The fixing mechanism 2 includes a cover plate 21 and a connecting portion 22. The cover plate 21 is mounted on the tank cover 12 of the normal pressure hot water tank 1, and the connecting portion 22 is connected to the cover plate 21.

[0029] The heating tube 3 has a first end and a second end that are oppositely disposed. The first end of the heating tube 3 passes through the cover plate 21 and is connected to the connecting portion 22. The connecting portion 22 is connected to an external heating device. The second end of the heating tube 3 extends into and passes through at least a portion of the inner cavity of the tank body 11 of the atmospheric hot water tank 1.

[0030] The heating tube 3 is covered with a protective sleeve 4 at the first end near the tank cover 12. The protective sleeve 4 has a sufficient covering length so that when the liquid 100 is poured into the tank body 11 and is ready to be heated, the liquid level 101 of the liquid 100 is at the position of the protective sleeve 4.

[0031] For the above structure, during installation, the operator needs to select a heating tube 3 that matches the depth of the tank body 11 of the atmospheric pressure hot water tank 1, so that in subsequent use, the effective heating section of the heating tube 3 can be completely immersed in the liquid 100. At the same time, a protective sleeve 4 of a preset length is pre-installed at the first end position of the heating tube 3, so that during heating, the liquid level 101 of the liquid 100 always intersects with the protective sleeve 4. Then, the heating tube 3 is installed on the tank cover 12 of the atmospheric pressure hot water tank 1 with the help of the fixing mechanism 2.

[0032] With the above-described structure, during use, the operator simply pours a predetermined amount of liquid 100 to be heated into the tank body 11. Specifically, the liquid level 101 of the liquid 100 must be at the same height as the protective sleeve 4 of the heating tube 3. The tank cover 12 is then securely closed and the heating tube 3 is heated by an external heating device. During the heating process, the heating tube 3 continuously releases heat, driving the temperature of the liquid 100 in contact with it to rise. During this process, the evaporation rate of the liquid 100 accelerates, generating a large amount of water vapor in the gap between the liquid level 101 and the bottom of the tank cover 12 within the atmospheric hot water tank 1. Because the protective sleeve 4 partially encloses the heating tube 3, it completely and tightly covers the heating tube 3 at the height of the gap between the liquid level 101 and the bottom of the tank cover 12. Therefore, the heating tube 3 is completely isolated from the water vapor floating in the gap between the liquid level 101 and the bottom of the tank cover 12, preventing the water vapor from corroding the heating tube 3, thereby indirectly extending the service life of the heating tube 3 in this embodiment. Compared with the existing heating device without the protective sleeve 4, the heating device has a longer service life and will not be affected by the corrosion of the heating tube 3 by water vapor.

[0033] Furthermore, in this embodiment, the protective sleeve 4 is configured as a Teflon sleeve. Specifically, the sleeve made of Teflon (polytetrafluoroethylene) has extremely low water absorption and can resist most acids, alkalis and solvents. It has good stability between -200 degrees Celsius and 260 degrees Celsius, is simple and easy to process, and is easy to be set on the outer wall of the heating tube 3 made of stainless steel, which can effectively prevent the heating tube 3 from being corroded by external water vapor.

[0034] Furthermore, the inner diameter of the protective sleeve 4 matches the outer diameter of the heating tube 3, so that the protective sleeve 4 is just tightly wrapped around the heating tube 3, preventing external water vapor from penetrating the tube wall of the heating tube 3 inside the protective sleeve 4. Specifically, the protective sleeve 4 can be configured as a cylindrical ring structure that is sleeved and installed on the outer wall of the heating tube 3, with a clearance fit between the protective sleeve 4 and the heating tube 3, or the protective sleeve 4 can be directly used as a coating material and evenly coated on the outer surface of the heating tube 3. As long as the heating tube 3 in the gap area between the liquid level 101 inside the atmospheric pressure hot water tank 1 and the bottom of the tank cover 12 can be completely covered by the protective sleeve 4, the same effect can be achieved. The close attachment of the protective sleeve 4 to the heating tube 3 can maximally prevent external water vapor from leaking into the gap between the protective sleeve 4 and the heating tube 3, causing corrosion of the heating tube 3.

[0035] Furthermore, the heating tube 3 is made of 316 stainless steel. Specifically, compared to common 304 stainless steel, the 316 stainless steel heating tube 3 in this embodiment has stronger corrosion resistance and higher temperature resistance, is suitable for most liquid heating scenarios, still has good thermal conductivity, and is relatively low in cost.

[0036] Furthermore, the heating tube is configured as a seamless steel tube structure. The seamless steel tube body has no welded nodes or gaps on its surface, which provides better uniformity and consistency from a structural perspective, making it more suitable for seamless installation of the protective sleeve 4 to maximize the protective effect of the protective sleeve 4.

[0037] Furthermore, the cover plate 21 is connected to a side wall of the tank cover 12 of the atmospheric-pressure hot water tank 1 that faces away from the interior of the tank body 11, with the connection portion 22 facing the exterior of the atmospheric-pressure hot water tank 1. Specifically, the distal end of the protective sleeve 4 is disposed proximate to the bottom surface of the cover plate 21. That is, in this embodiment, the fixing mechanism 2 is entirely disposed outside the atmospheric-pressure hot water tank 1, avoiding the heating reaction area. Furthermore, in the atmospheric-pressure hot water tank 1, the protective sleeve 4 can completely cover the entire heating area connected to the heating tube 3, isolating the heating tube 3 from water vapor to the greatest extent possible.

[0038] Furthermore, the protective sleeve 4 is arranged to avoid the effective heating section of the heating tube 3 for heating the liquid 100 , thereby maximizing the heating efficiency of the heating tube 3 and preventing the heat conduction efficiency from being affected by the protective sleeve 4 .

[0039] like Figure 2 In this embodiment, the heating tube 3 is configured as a complete U-shaped tube, that is, the protective sleeve 4 actually includes two independent sections, which are respectively arranged at the two ends of the U-shaped tube.

[0040] The contents disclosed above are only preferred feasible embodiments of the present invention and do not limit the scope of the patent application of the present invention. Therefore, all equivalent technical changes made using the contents of the description and drawings of the present invention are included in the scope of the patent application of the present invention.

[0041] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on the differences from other embodiments.

[0042] Although the present application has been described through embodiments, those skilled in the art will appreciate that there are many modifications and variations to the present application without departing from the spirit of the present application. It is intended that the appended embodiments include these modifications and variations without departing from the present application.

Claims

1. A heating device for high temperature and high humidity environment, used for heating a normal pressure hot water tank, wherein: The normal pressure hot water tank comprises a tank body and a tank cover provided on the top of the tank body, wherein the tank body is used to hold the liquid to be heated; and the heating device under high temperature and high humidity environment comprises: A fixing mechanism, the fixing mechanism comprising a cover plate and a connecting portion, the cover plate being mounted on the tank cover of the normal pressure hot water tank, the connecting portion being connected to the cover plate; a heating pipe having a first end and a second end oppositely disposed, the first end of the heating pipe passing through the cover plate and connected to the connecting portion, the connecting portion being connected to an external heating device, and the second end of the heating pipe extending into and passing through at least a portion of the inner cavity of the tank body of the normal pressure hot water tank; The heating tube is covered with a protective sleeve at the first end near the tank cover, and the protective sleeve has a sufficient covering length so that when the liquid is poured into the tank body and is ready to be heated, the liquid level is at the position of the protective sleeve.

2. The heating device for high temperature and high humidity environment according to claim 1, characterized in that: The protective sleeve is configured as a Teflon sleeve.

3. The heating device for high temperature and high humidity environment according to claim 1, characterized in that: The inner diameter of the protective sleeve matches the outer diameter of the heating tube, so that the protective sleeve is tightly wrapped around the heating tube, preventing external water vapor from penetrating the wall of the heating tube inside the protective sleeve.

4. The heating device for high temperature and high humidity environment according to claim 1, characterized in that: The heating tube is made of 316 stainless steel.

5. The heating device for high temperature and high humidity environment according to claim 1, characterized in that: The heating pipe is configured as a seamless steel pipe structure.

6. The heating device for high temperature and high humidity environment according to claim 1, characterized in that: The cover plate is connected to a side wall of the tank cover of the normal-pressure hot water tank that is away from the inside of the tank body, and the connecting portion is arranged toward the outside of the normal-pressure hot water tank.

7. The heating device for high temperature and high humidity environment according to claim 1, characterized in that: The end of the protective sleeve is arranged adjacent to the bottom surface of the cover plate.

8. The heating device for high temperature and high humidity environment according to claim 1, characterized in that: The protective sleeve is arranged to avoid the effective heating section of the heating tube for heating the liquid.

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