Heat pipe heat exchanger with heat-insulating, anti-corrosion and anti-leakage protective layer
By adding isolation layer and casing design to the heat pipe heat exchanger, the corrosion problem of water tank and heat pipe welds in low-temperature environments is solved, and flue gas leakage is prevented, achieving higher corrosion resistance and sealing.
Patent Information
- Application Number
- CN202420662116.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-02
- Publication Date
- 2025-01-07
- Estimated Expiration
- 2034-04-02
AI Technical Summary
Existing heat pipe heat exchangers are susceptible to sulfuric acid corrosion in low temperature environments, resulting in corrosion of the water tank and heat pipe welds, and there is a problem of flue gas leakage.
A heat pipe heat exchanger with a heat insulation, corrosion and leakage protection layer was designed. By adding an isolation layer between the water tank and the sealing pressure plate, the contact between the flue gas and the water tank is blocked, and a sleeve is provided on the heat pipe to enhance the connection and curing. , solid slurry pouring is used to form an isolation layer, including components such as silicone polymers.
It effectively reduces the low-temperature corrosion of the water tank and the corrosion of the heat pipe welds, prevents flue gas leakage, and improves the corrosion resistance and sealing of the equipment.
Smart Images
Figure CN222317795U_ABST
Abstract
Description
[Technical field]
[0001] The utility model relates to the technical field of heat pipe heat exchangers, in particular to a heat pipe heat exchanger with a heat insulation, anti-corrosion and anti-leakage protective layer. [Background technology]
[0002] In recent years, water-jacketed heat pipe heat exchangers have begun to be used in low-temperature economizers. Because the heat pipe itself is divided into a hot end and a cold end, the hot end of the heat pipe low-temperature economizer is arranged inside the flue, and the cold end is arranged outside the flue. A water jacket is installed at the cold end of each heat pipe, and then the water jackets are connected in series with small-diameter pipes to achieve the circulation of cooling water, thereby greatly avoiding the leakage problem of traditional low-temperature economizers and allowing the heat pipe low-temperature economizer to operate continuously for a long time.
[0003] The existing heat pipe module tube row is separated from the tropical dust flue gas by a water tank. The tube row is welded to the water tank, which is also the supporting structure of the tube row. At the same time, the water tank cannot be insulated. When the temperature of the position where the water tank contacts the flue gas is lower than the acid dew point, the SO3 in the flue gas combines with water vapor to produce sulfuric acid, which corrodes the tube row and the water tank. Especially at the water inlet end of the heat medium, the corrosion is more serious. [Utility Model Content]
[0004] The purpose of the utility model is to solve the problems in the prior art and to propose a heat pipe heat exchanger with a heat insulation, anti-corrosion and anti-leakage protective layer, which can greatly reduce the low-temperature corrosion of the water tank; at the same time, it also reduces the corrosion of the weld between the water tank and the heat pipe; and can also prevent the leakage of smoke.
[0005] To achieve the above-mentioned purpose, the utility model proposes a heat pipe heat exchanger with a heat insulation, anti-corrosion and anti-leakage protective layer, including a plurality of water tanks, a plurality of heat pipes, an isolation layer and a sealing pressure plate. The water tanks are arranged in sequence from front to back to form a water tank row, and a plurality of heat pipes fixedly connected are penetrated on the water tanks. An isolation layer is provided between the sealing pressure plate and the water tank row, and the sealing pressure plate is sleeved on the heat pipe. The isolation layer has at least the function of heat insulation, anti-corrosion and anti-leakage.
[0006] Preferably, the sealing pressure plate is composed of a plurality of channel steel bodies arranged closely in sequence.
[0007] Preferably, the heat pipes are all fixedly sleeved with a sleeve, which passes through the lower box wall, the isolation layer and the bottom of the corresponding channel steel body of the corresponding water tank.
[0008] Preferably, the sleeve is fixedly connected to the lower box wall of the corresponding water tank and the bottom of the corresponding channel steel body by full welding.
[0009] Preferably, the water tank row, the sealing pressure plate and the frame cooperate to form a casting space for the isolation layer.
[0010] Preferably, two adjacent water tanks are in close contact.
[0011] Beneficial effects of the utility model: the utility model cuts off the contact between the flue gas and the water tank through the design improvement of adding an isolation layer between the water tank and the sealing pressure plate. Compared with the prior art, the low-temperature corrosion of the water tank can be greatly reduced; at the same time, the corrosion of the weld between the water tank and the heat pipe is also reduced; and the leakage of flue gas can also be prevented.
[0012] The features and advantages of the present invention will be described in detail through embodiments in conjunction with the accompanying drawings.
Brief Description of the Drawings
[0013] Figure 1 The utility model is a structural schematic diagram of a heat pipe heat exchanger with a heat-insulating, anti-corrosion and anti-leakage protective layer.
[0014] In the figure: 1-water tank, 2-heat pipe, 3-isolation layer, 4-sealing plate, 5-casing, 6-frame, 7-casting space, 41-channel steel body. [Specific implementation method]
[0015] See also Figure 1 The utility model discloses a heat pipe heat exchanger with a heat insulation, anti-corrosion and anti-leakage protective layer, comprising a plurality of water tanks 1, a plurality of heat pipes 2, an isolation layer 3 and a sealing platen 4. The water tanks 1 are arranged in sequence from front to back to form a water tank row, and the water tanks 1 are each provided with a plurality of heat pipes 2 that are fixedly connected, an isolation layer 3 is provided between the sealing platen 4 and the water tank row, the sealing platen 4 is sleeved on the heat pipe 2, and the isolation layer 3 has at least the function of heat insulation, anti-corrosion and anti-leakage, the sealing platen 4 is composed of a plurality of channel steel bodies 41 that are closely arranged in sequence, and a sleeve 5 is fixedly sleeved on the heat pipe 2, the sleeve 5 passes through the lower box wall of the corresponding water tank 1, the isolation layer 3 and the bottom of the corresponding channel steel body 41, the sleeve 5 is fixedly connected to the lower box wall of the corresponding water tank 1 and the bottom of the corresponding channel steel body 41 by full welding, the water tank row, the sealing platen 4 and the frame 6 cooperate to form a casting space 7 for the isolation layer 3, the isolation layer 3 is cast by solid cement, and the two adjacent water tanks 1 are in close contact.
[0016] The isolation layer 3 includes the following components and the weight proportions of each component are: organic silicon polymer: 25 parts, hydroxy silicone oil: 8 parts, catalyst: 4 parts, coupling agent: 4 parts, aminosilane: 10 parts, dibutyltin diosilicate: 3 parts, calcium carbonate: 15 parts, meteorological silica: 12 parts, methylsilane: 6 parts, organic methyl silicone: 6 parts and organic hydroxy silicone: 7 parts. The above formula is used in the present application to achieve good heat insulation, anti-corrosion and anti-leakage effects.
[0017] Working process of this utility model:
[0018] The utility model discloses a heat pipe heat exchanger with a heat insulation, anti-corrosion and anti-leakage protective layer. During operation, the contact between the flue gas and the water tank is cut off by adding an isolation layer 3 between the water tank and the sealing pressure plate. Compared with the prior art, the low-temperature corrosion of the water tank can be greatly reduced. At the same time, the corrosion of the weld between the water tank and the heat pipe is also reduced. The leakage of flue gas can also be prevented.
[0019] The sealing pressing plate 4 is used to compact the castable material and at the same time, isolate the smoke from the castable material.
[0020] The material of the sealing pressure plate 4 is preferably carbon steel Q235B, and duplex stainless steel 2205 is preferred when the flue gas temperature is lower than 70°C.
[0021] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention falls within the protection scope of the present invention.
Claims
1. A heat pipe heat exchanger with a heat insulation, anti-corrosion and anti-leakage protective layer, characterized in that: The invention comprises a plurality of water tanks (1), a plurality of heat pipes (2), an isolation layer (3) and a sealing pressure plate (4); the water tanks (1) are arranged in sequence from front to back to form a water tank row; the water tanks (1) are each provided with a plurality of heat pipes (2) which are fixedly connected; an isolation layer (3) is provided between the sealing pressure plate (4) and the water tank row; the sealing pressure plate (4) is sleeved on the heat pipes (2); and the isolation layer (3) has at least the functions of heat insulation, corrosion prevention and leakage prevention.
2. A heat pipe heat exchanger with a heat insulation, anti-corrosion and anti-leakage protective layer as claimed in claim 1, characterized in that: The sealing pressure plate (4) is composed of a plurality of channel steel bodies (41) which are closely arranged in sequence.
3. A heat pipe heat exchanger with a heat insulation, anti-corrosion and anti-leakage protective layer as claimed in claim 2, characterized in that: The heat pipes (2) are all fixedly sleeved with sleeves (5), and the sleeves (5) pass through the lower box wall of the corresponding water box (1), the isolation layer (3) and the bottom of the corresponding channel steel body (41).
4. A heat pipe heat exchanger with a heat insulation, anti-corrosion and anti-leakage protective layer as claimed in claim 3, characterized in that: The sleeve (5) is fixedly connected to the lower box wall of the corresponding water tank (1) and the bottom of the corresponding channel steel body (41) by full welding.
5. The heat pipe heat exchanger with a heat insulation, anti-corrosion and anti-leakage protective layer according to claim 1, characterized in that: The water tank row, the sealing pressure plate (4) and the frame (6) cooperate to form a pouring space (7) for the isolation layer (3).
6. A heat pipe heat exchanger with a heat insulation, anti-corrosion and anti-leakage protective layer according to any one of claims 1 to 5, characterized in that: Two adjacent water tanks (1) are in close contact.