A novel multi-cavity tube heat exchanger

Abstract

This utility model provides a novel multi-cavity tube heat exchanger, belonging to the field of heat exchanger equipment. It includes a heat exchange box, characterized by: an air inlet on the heat exchange box, a heat exchange cavity inside the heat exchange box, the air inlet communicating with the heat exchange cavity, a mounting plate on one side of the heat exchange box, multiple sets of heat exchange pipes inside the heat exchange cavity, the ends of the heat exchange pipes passing through the mounting plate and fixed to the mounting plate; a tube housing on one side of the heat exchange box, with multiple partitions inside the tube housing dividing the tube housing into multiple chambers, each set of heat exchange pipes located in a separate chamber; the end of the partition near the heat exchange box abuts against the mounting plate; the heat exchange box and the tube housing are detachable. This utility model is suitable for heat exchange of multiple materials simultaneously within the same heat exchanger by setting multiple sets of heat exchange pipes inside the heat exchange box and a detachable tube housing with multiple chambers on one side of the heat exchange box.

Description

Technical Field

[0001] This utility model relates to the field of heat exchanger equipment, specifically to a novel multi-cavity tube heat exchanger. Background Technology

[0002] Heat exchangers play a crucial role in modern industrial production and daily life. They enable heat transfer between fluids at different temperatures and are widely used in many fields such as chemical, petroleum, energy, and food industries. For example, in chemical production, they can heat or cool reaction materials to meet process temperature requirements. Through heat exchangers, some of the heat from the hot fluid is transferred to the cold fluid, achieving rational energy utilization, improving energy efficiency, and ensuring the stable operation of various processes.

[0003] However, current heat exchangers generally have a significant limitation: they can only exchange heat with a single substance. This means that in practical applications, if heat exchange is required simultaneously with multiple substances of different properties and temperature requirements, multiple different heat exchangers must be installed and operate separately. For example, in some complex chemical processes, multiple raw materials may require preheating or cooling. With existing heat exchanger technology, multiple heat exchangers must be installed to handle the heat exchange needs of each substance. This undoubtedly increases equipment costs significantly, as purchasing multiple heat exchangers requires a larger investment; it also significantly increases the floor space required, a thorny issue for factories with limited space; and the operation of multiple devices inevitably leads to increased energy consumption and significantly higher operating costs. Utility Model Content

[0004] In view of this, the present invention provides a novel multi-cavity tube heat exchanger, which can be configured by setting multiple sets of heat exchange pipes in the heat exchange box and setting a detachable tube box shell on one side of the heat exchange box, and the tube box shell has multiple chambers. The end of each set of heat exchange pipes is placed in a separate chamber, so that different substances can be injected into each set of pipes.

[0005] To solve the above-mentioned technical problems, this utility model provides a novel multi-cavity tube heat exchanger, including a heat exchange box, a heat exchange cavity inside the heat exchange box for storing heat exchange medium, and multiple sets of heat exchange pipes inside the heat exchange cavity. The heat exchange pipes have a disc-shaped structure, which facilitates the material inside the heat exchange pipes to increase the contact area in the heat exchange cavity and better exchange heat with the material inside the heat exchange pipes. When there is material inside the heat exchange pipes, the heat exchange medium in the heat exchange cavity exchanges heat with the material inside the heat exchange pipes. The heat exchange box has an air inlet that is connected to the heat exchange cavity, through which gas is delivered into the heat exchange cavity.

[0006] The heat exchange chamber has a mounting plate on one side for sealing the heat exchange cavity. The mounting plate is integrally set with the heat exchange chamber by welding. The end of the heat exchange pipe passes through the mounting plate so that one end of the heat exchange pipe is exposed outside the heat exchange chamber. The heat exchange pipe exposed outside the heat exchange chamber is used to inject materials into the heat exchange pipe. The heat exchange pipe is fixed on the mounting plate, and the mounting plate supports and fixes the heat exchange pipe.

[0007] One side of the heat exchanger box has a tube box shell, inside which there are multiple baffles. The baffles divide the interior of the tube box shell into multiple chambers. Each set of heat exchange pipes exposed outside the heat exchanger box is located in a separate chamber. The end of the baffle near the heat exchanger box abuts against the mounting plate, and a sealing strip is installed at the end of the baffle near the heat exchanger box so that the sealing strip abuts against the mounting plate. This can better seal the chamber and prevent the material between the chambers from leaking and mixing when the material is injected into the chamber.

[0008] Furthermore, the chamber can be further divided into a feeding chamber and a discharging chamber. The inlet of each set of heat exchange pipes is placed in the feeding chamber, and the outlet of each set of heat exchange pipes is placed in the discharging chamber. A feeding pipe connected to the feeding chamber and a discharging pipe connected to the discharging chamber are opened on the pipe box shell. The material is injected into the feeding chamber through the feeding pipe and pressure is injected into the feeding chamber so that the material is discharged from the discharging pipe after heat exchange in the heat exchange pipe.

[0009] The heat exchange box body and the tube box shell are detachable. Flanges are installed on the outer surfaces of the heat exchange box body and the tube box shell, and the flanges are fixed by welding and bolts. This makes it easy to disassemble the tube box shell and clean the exposed heat exchange pipes during subsequent use.

[0010] Furthermore, an outlet is installed at the end of the heat exchange chamber furthest from the inlet. Gas is input through the inlet and discharged through the outlet, ensuring gas balance within the heat exchange chamber. A Siemens 7ML1201-1EB00 pressure valve is installed at the outlet. This valve monitors the gas pressure within the heat exchange chamber in real time, preventing excessive or insufficient pressure that could hinder uniform gas distribution. A PT124B-123 / 123T temperature sensor is placed inside the heat exchange chamber to maintain a maximum temperature of approximately 400 degrees Celsius. If the temperature becomes too low or too high, the gas within the heat exchange chamber is replaced to ensure a constant temperature.

[0011] The beneficial effects of the above-mentioned technical solution of this utility model are as follows:

[0012] 1. Enables simultaneous heat exchange of multiple media, reducing equipment costs and floor space: Through the design of multiple sets of heat exchange pipes and independent chambers within the tube box shell, multiple different media can be processed simultaneously within the same equipment, avoiding the need for multiple heat exchangers in traditional technologies, significantly reducing equipment purchase costs and installation space. This reduces the number of devices and simplifies the process flow, making it particularly suitable for the simultaneous heat exchange needs of multiple materials in complex chemical scenarios.

[0013] 2. Enhanced heat transfer efficiency: The heat exchange pipes adopt a disc-type (spiral or coiled) structure, significantly increasing the contact area between the material and the heat exchange medium (such as steam), extending the heat exchange path, and improving heat transfer efficiency. The gas circulation design of the inlet and outlet helps to distribute heat evenly and ensure the stability of the temperature field within the heat exchange chamber.

[0014] 3. Supports multiple pressure conditions and is highly adaptable: Independent chambers can withstand different pressures (such as external pressure applied through the feed pipe), meeting the heat exchange requirements of various media under different pressure conditions and broadening the application scenarios of the equipment. The pressure valve monitors the gas pressure in the heat exchange chamber in real time and automatically adjusts it to avoid equipment damage or heat exchange efficiency reduction caused by abnormal pressure.

[0015] 4. Detachable structure facilitates maintenance and cleaning: The heat exchange box and the tube box shell are connected by flanges, which makes disassembly convenient and can quickly expose the exposed ends of the heat exchange pipes, making it easy to clean scale or residual materials on the inner wall of the pipes regularly and maintain the efficient operation of the equipment.

[0016] 5. Excellent sealing performance to prevent media mixing: The partition plate and the mounting plate make contact with each other, and the sealing strip design effectively isolates each chamber, preventing leakage and mixing of different media during injection or discharge, and ensuring the accuracy and safety of the heat exchange process. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the main structure of a novel multi-cavity tube heat exchanger according to this utility model;

[0018] Figure 2 This is a cross-sectional view of the heat exchange cavity of this utility model.

[0019] Explanation of reference numerals in the attached drawings: 1. Heat exchanger body; 2. Air inlet; 3. Heat exchange chamber; 4. Mounting plate; 5. Heat exchange pipe; 6. Tube box shell; 7. Partition plate; 8. Flange; 9. Sealing strip; 10. Discharge port; 11. Pressure valve; 12. Temperature sensor; 13. Chamber. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the following will be described in conjunction with the accompanying drawings of the embodiments of this utility model. Figure 1-2The technical solutions of the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model are within the protection scope of this utility model.

[0021] like Figure 1 , 2 As shown:

[0022] This embodiment provides a novel multi-cavity tube heat exchanger, including a heat exchange housing 1, within which a heat exchange chamber 3 is provided for storing a heat exchange medium, such as steam. Multiple sets of disc-type heat exchange pipes 5 are arranged within the chamber; their spiral or coiled structure significantly increases the contact area between the material and the heat exchange medium, enhancing heat transfer efficiency. When the material to be processed, such as a fluid requiring heating or cooling, is introduced into the heat exchange pipes 5, the heat exchange medium exchanges heat with the material through the pipe walls, achieving the process objective of heating or cooling.

[0023] An air inlet 2 is opened on the side of the heat exchange chamber 1. The air inlet 2 is directly connected to the heat exchange chamber 3 and is used to deliver steam into the chamber. The steam circulates in the heat exchange chamber 3 to help distribute the heat evenly. When the pressure in the heat exchange chamber 3 is increased to 2.5 MPa, the gas injection is stopped. The steam in the heat exchange chamber 3 comes into contact with the heat exchange pipe 5 and exchanges heat with the material in the heat exchange pipe 5.

[0024] like Figure 2 As shown:

[0025] A mounting plate 4 is welded to one side of the heat exchange chamber 1 to form a sealed enclosure for the heat exchange cavity 3. The end of the heat exchange pipe 5 passes through the mounting plate 4, with one end exposed outside the chamber and the other end extending into the heat exchange cavity 3. A material inlet is provided at the exposed end for connecting external feeding equipment to allow for material injection and discharge; the disc-shaped pipe extending into the cavity is completely immersed in the heat exchange medium to ensure sufficient heat exchange. The mounting plate 4 provides fixation and support for the heat exchange pipe 5, and the welded seal prevents leakage of the heat exchange medium, forming an isolation interface between the chamber and the outside.

[0026] like Figure 2 As shown:

[0027] The exposed pipes of the heat exchanger body 1 are connected to the outer side of the tube housing 6. The tube housing 6 is divided into multiple independent chambers 13 by a partition 7. The partition 7 is welded to the tube housing 6, which can effectively prevent material leakage in the chambers 13. The exposed end of each set of heat exchange pipes 5 is placed in a separate chamber 13. The end of the partition 7 near the heat exchanger body 1 is in close contact with the mounting plate 4, and a sealing strip 9 is installed on one side of the partition 7. The sealing strip 9 achieves a seal between the chambers 13 by pressing against the mounting plate 4, preventing the material from different pipes from falling into the chambers 13 and mixing with the downstream material.

[0028] like Figure 2 As shown:

[0029] Each chamber 13 can be further divided into a feed chamber and a discharge chamber. The feed inlets of the same set of heat exchange pipes 5 are concentrated in the feed chamber, and the discharge outlets 10 are concentrated in the discharge chamber. Feed pipes and discharge pipes are correspondingly opened on the outside of the pipe box shell 6, which are connected to the feed chamber and the discharge chamber respectively. The material is injected into the feed chamber through the feed pipe, and under the action of external pressure (such as pump pressurization), it flows through the heat exchange pipes 5 to complete heat exchange, and finally is discharged from the discharge pipe of the discharge chamber. The independent chamber 13 design supports the parallel operation of multiple sets of pipes, which facilitates the realization of material branch control or multi-process technology.

[0030] like Figure 1 , 2 As shown:

[0031] The heat exchange box 1 and the tube box shell 6 are connected by flanges 8 to achieve a detachable function: flanges 8 are welded to the outer side of the contact surface between the box and the shell, and bolt holes are machined on the surface of the flanges 8; bolts are passed through the flange holes and tightened to form a sealed connection; when disassembling, only the bolts need to be loosened to separate the tube box shell 6 and expose the exposed end of the heat exchange pipe 5, which is convenient for regular cleaning of scale or residual materials on the inner wall of the pipe and maintenance of equipment performance.

[0032] like Figure 2 As shown:

[0033] An air outlet is located at the end of the heat exchange chamber 1 furthest from the air inlet 2, forming a gas circulation path with the air inlet 2 to ensure stable air pressure inside the chamber. A Siemens 7ML1201-1EB00 pressure valve 11 is installed at the air outlet to monitor the gas pressure inside the chamber in real time. The valve automatically opens and closes to regulate the airflow, preventing excessive pressure from damaging the equipment or excessive pressure from affecting the uniformity of the flow field.

[0034] like Figure 2 As shown:

[0035] A PT124B-123 / 123T temperature sensor 12 is installed inside the heat exchange chamber 3 to collect medium temperature data in real time. The system is set to an upper temperature limit of about 400℃. When the temperature deviates from the set range, the heat balance is adjusted by changing the gas in the chamber (such as introducing high-temperature or low-temperature gas) to ensure that the heat exchange process is stable and controllable.

[0036] Working principle: Material enters the feed chamber through the feed pipe of the casing 6, completes heat exchange in the heat exchange chamber 3 via the heat exchange pipe 5, and is discharged from the discharge pipe of the discharge chamber. Gas enters the heat exchange chamber 3 through the inlet 2, and forms a circulation through the pressure valve 11 and the outlet, assisting in heat transfer. The mounting plate 4 and flange structure ensure the mechanical connection and sealing performance of each component, and the temperature and pressure control system ensures the stability of process parameters. Through the coordinated action of pipes, chambers, and sensors, all parts form an efficient and reliable heat exchange system.

[0037] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0038] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A new type of multi-cavity tube heat exchanger comprising a heat exchange box (1), characterized in that: The heat exchange box has an air inlet (2), and the heat exchange box body (1) has a heat exchange cavity (3). The air inlet (2) is connected to the heat exchange cavity (3). The heat exchange box body (1) has a mounting plate (4) on one side. The heat exchange cavity (3) has multiple sets of heat exchange pipes (5). The ends of the heat exchange pipes (5) pass through the mounting plate (4), and the heat exchange pipes (5) are fixed on the mounting plate (4). The heat exchange box (1) has a tube box shell (6) on one side. The tube box shell (6) has multiple partitions (7) inside. The partitions (7) divide the tube box shell (6) into multiple chambers (13). The end of each group of heat exchange pipes (5) is located in a separate chamber (13). The partition (7) near the heat exchange box (1) abuts against the mounting plate (4); The heat exchange box (1) and the tube box shell (6) are detachable.

2. The novel multi-cavity tube heat exchanger as described in claim 1, characterized in that: The heat exchange box (1) and the tube box shell (6) are connected by a flange (8).

3. A novel multi-cavity tube heat exchanger as described in claim 1 or 2, characterized in that: The partition (7) has a sealing strip (9) at one end near the heat exchange box (1), and the sealing strip (9) is located between the side wall of the heat exchange box and the partition (7).

4. The novel multi-cavity tube heat exchanger as described in claim 1, characterized in that: The heat exchange pipe (5) has a disc structure.

5. A novel multi-cavity tube heat exchanger as described in claim 1, characterized in that: The heat exchange box (1) has an outlet (10) on the side away from the inlet.

6. A novel multi-cavity tube heat exchanger as described in claim 5, characterized in that: A pressure valve (11) is provided at the discharge port (10).

7. A novel multi-cavity tube heat exchanger as described in claim 6, characterized in that: The heat exchange box has a temperature sensor (12) inside, which is located near the discharge port (10).

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