A detachable coil heat exchanger device

Abstract

The utility model discloses a detachable coil heat exchanger device belongs to heat exchanger technical field, including the shell of hollow structure, the left and right two ends of shell are detachable and are provided with flange plate no.

Description

Technical Field

[0001] This utility model relates to the field of heat exchanger technology, and in particular to a detachable coil heat exchanger device. Background Technology

[0002] The Yan'an Refinery of Shaanxi Yanchang Petroleum Group Co., Ltd. (located in Jiaokouhe Town) uses river water (containing silt) from the Jiaokouhe River as cooling water for its equipment heat exchangers. Due to the high silt content, scaling, blockage, and corrosion frequently occur inside and outside the coils, requiring frequent cleaning of the heat exchangers. Traditional heat exchangers require complete disassembly, which is time-consuming and labor-intensive. Therefore, this invention proposes a detachable coil heat exchanger device, allowing direct removal of the coils for individual inspection and maintenance, significantly reducing the difficulty of maintenance. Utility Model Content

[0003] The purpose of this invention is to provide a detachable coil heat exchanger device to solve the problems mentioned above.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] This utility model discloses a detachable coil heat exchanger device, comprising a hollow outer shell. Flange 1 and Flange 2 are detachably mounted at the left and right ends of the outer shell, respectively. A flow guide sleeve is welded to the side wall of Flange 1, located inside the outer shell. A cooling water inlet is located at the top of the outer shell, and a cooling water outlet is located at the center of Flange 1. A flushing liquid outlet and a flushing liquid inlet are located above and below the cooling water outlet, respectively, and are connected to a coil located inside the outer shell. A drain port is located at the center of Flange 2.

[0006] Furthermore, the coil includes a horizontally distributed coil inlet that communicates with the flushing fluid inlet. The coil inlet is located inside the flow guide sleeve and is integrally formed with an inner spiral tube. The other end of the inner spiral tube is integrally formed with an outer spiral tube. The outer spiral tube is sleeved on the outer periphery of the flow guide sleeve. The other end of the outer spiral tube is integrally formed with a horizontally distributed coil outlet that communicates with the flushing fluid outlet.

[0007] Furthermore, connecting plates are symmetrically arranged at the bottom of the outer casing.

[0008] Furthermore, a sign holder is provided on the top of the housing.

[0009] Furthermore, an exhaust port is provided on one side of the flange.

[0010] Furthermore, the flushing fluid outlet and flushing fluid inlet are respectively connected to the coil via pipe fittings.

[0011] Furthermore, a coil connector assembly is provided on the outer side wall of the flange, which is welded to the coil. The end of the coil connector assembly away from the coil is welded to the pipe connector. The end of the pipe connector away from the coil connector assembly is provided with an external thread. The flushing fluid outlet / flushing fluid inlet is provided with an internal thread that mates with the external thread.

[0012] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0013] This utility model's detachable coil heat exchanger device eliminates the need for complete disassembly when scaling, blockage, or corrosion occurs inside or outside the coil. The coil can be directly removed for individual inspection and repair, significantly reducing maintenance difficulty and avoiding the efficiency decline caused by difficult cleaning in traditional fixed heat exchangers. Furthermore, if the coil is damaged due to corrosion or wear, the damaged coil can be replaced individually, eliminating the need to replace the entire heat exchanger, thus reducing maintenance costs and equipment downtime. In summary, this utility model's detachable coil heat exchanger device optimizes structural design and offers significant advantages in terms of ease of maintenance, adaptability to operating conditions, and cost control, improving equipment flexibility and maintainability. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings.

[0015] Figure 1 This is a cross-sectional view of the detachable coil heat exchanger device of this utility model;

[0016] Figure 2 This is a side view of the detachable coil heat exchanger device of this utility model;

[0017] Figure 3 This is a diagram of the cooling water outlet structure.

[0018] Explanation of reference numerals in the attached drawings: 1. Outer shell; 2. Flange 1; 3. Flange 2; 4. Guide sleeve; 5. Coil; 6. Cooling water outlet; 7. Drain port; 8. Cooling water inlet; 9. Pipe fitting; 10. Flushing fluid inlet; 11. Flushing fluid outlet; 12. Connecting plate; 13. Nameplate bracket; 14. Vent hole;

[0019] 601, Coil inlet; 602, Inner spiral tube; 603, Outer spiral tube; 604, Coil outlet. Detailed Implementation

[0020] like Figure 1-3As shown, a detachable coil heat exchanger device includes a hollow shell 1. Flange 1 and flange 2 are detachably installed at the left and right ends of the shell 1, respectively. Flange ring structures that connect to flange 1 and flange 2 are integrally formed at both ends of the shell 1. When connected, a flange sealing ring structure is installed between the flange and the flange ring, and bolt assembly is used for installation, which is convenient for disassembly and installation.

[0021] The flange 2 is welded to the side wall of the outer shell 1 with a flow guide sleeve 4, which is located inside the outer shell 1.

[0022] A cooling water inlet 8 is installed on the top of the outer casing 1, and a cooling water outlet 6 is installed at the center of the flange 2. A flushing fluid outlet 11 and a flushing fluid inlet 10 are installed above and below the cooling water outlet 6, respectively. The flushing fluid outlet 11 and flushing fluid inlet 10 are connected to a coil 5, which is located inside the outer casing 1. A drain port 7 is installed at the center of the flange 3. Sufficient space is left between the coil 5 and the flange 3. When the cooling water contains impurities such as mud and sand, the bottom of the heat exchanger (where the heat exchanger is vertically installed) can store a considerable amount of these impurities, preventing them from blocking the flow of cooling water and affecting the heat exchange process.

[0023] The coil 5 includes a horizontally distributed coil inlet 601 that communicates with the flushing fluid inlet 10. The coil inlet 601 is located inside the guide sleeve 4 and is integrally formed with an inner spiral tube 602. The other end of the inner spiral tube 602 is integrally formed with an outer spiral tube 603. The outer spiral tube 603 is sleeved on the outer periphery of the guide sleeve 4. The other end of the outer spiral tube 603 is integrally formed with a horizontally distributed coil outlet 604 that communicates with the flushing fluid outlet 11. The guide sleeve 4 is located in the gap between the inner spiral tube 602 and the outer spiral tube 603, forcing the fluid to flow along the extension direction of the spiral tube. This ensures that the fluid can uniformly scour the surfaces of the inner and outer spiral tubes, avoiding local fluid stagnation or shortcuts. In addition, the guide sleeve 4 can further disrupt the fluid boundary layer by changing the fluid flow path, increasing the turbulence intensity and making the heat exchange between the fluid and the tube wall more complete, thereby improving the overall heat transfer coefficient. At the same time, the guide sleeve 4 makes the fluid velocity in the gap between the inner spiral tube 602 and the outer spiral tube 603 tend to be uniform, avoiding energy loss caused by excessively high or low local flow velocities, reducing overall flow resistance, and saving transportation energy consumption.

[0024] The bottom of the outer casing 1 is symmetrically equipped with connecting plates 12 for fixing, which can be fixed horizontally or vertically as needed.

[0025] A sign holder 13 is installed on the top of the outer casing 1 for mounting signs.

[0026] A vent 14 is installed on one side of the flange 2. When there is gas (such as air, non-condensable gas generated by steam condensation, gas dissolved in the medium, etc.) in the heat exchanger, the gas density is much lower than that of the liquid. It is easy to form a gas film or gas bag on the heat exchange surface (such as the pipe wall or shell wall). The gas film will significantly increase the heat transfer resistance, resulting in a significant decrease in heat exchange efficiency. The vent 14 can discharge these gases in time to ensure that the heat exchange surface is fully covered by the liquid, reduce the thermal resistance, and maintain the designed heat transfer effect.

[0027] The flushing fluid outlet 11 and flushing fluid inlet 10 are respectively connected to the coil 5 via pipe fittings 9. A coil fitting assembly 1, welded to the coil 5, is installed on the outer wall of the flange 2. The end of the coil fitting assembly 1 away from the coil 5 is welded to the pipe fitting 9. The end of the pipe fitting 9 away from the coil fitting assembly 1 has an external thread, and the flushing fluid outlet 11 / flushing fluid inlet 10 has an internal thread that mates with the external thread. The pipe fitting 9 and the coil fitting assembly 1 are sealed by a flat gasket under pressure deformation.

[0028] The operation process of this utility model is as follows:

[0029] The flushing fluid enters the coil 5 through the flushing fluid inlet 10 and exits through the flushing fluid outlet 11; the cooling water enters the interior of the outer shell 1 through the cooling water inlet 8, flows along the space between the shell 3 and the guide sleeve 6 to the bottom of the outer shell 1, and then flows through the inner cylinder of the guide sleeve 6 to the cooling water outlet 6 for discharge; this creates a fluid convection effect between the flushing fluid and the cooling water, and the cooling water can carry away the heat of the flushing fluid through heat exchange.

[0030] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A detachable coil heat exchanger device, characterized in that: The shell (1) includes a hollow structure. Flange 1 (2) and Flange 2 (3) are detachably provided at the left and right ends of the shell (1). A flow guide sleeve (4) is welded to the side wall of the shell (1) and the flow guide sleeve (4) is located inside the shell (1). A cooling water inlet (8) is provided at the top of the shell (1). A cooling water outlet (6) is provided at the center of the flange 1 (2). A flushing liquid outlet (11) and a flushing liquid inlet (10) are provided above and below the cooling water outlet (6). The flushing liquid outlet (11) and the flushing liquid inlet (10) are connected to a coil (5) and the coil (5) is located inside the shell (1). A drain port (7) is provided at the center of the flange 2 (3).

2. The detachable coil heat exchanger device according to claim 1, characterized in that: The coil (5) includes a coil inlet (601) that is horizontally distributed and communicates with the flushing fluid inlet (10). The coil inlet (601) is located inside the guide sleeve (4) and is integrally formed with an inner spiral tube (602). The other end of the inner spiral tube (602) is integrally formed with an outer spiral tube (603). The outer spiral tube (603) is sleeved on the outer periphery of the guide sleeve (4). The other end of the outer spiral tube (603) is integrally formed with a coil outlet (604) that is horizontally distributed and communicates with the flushing fluid outlet (11).

3. The detachable coil heat exchanger device according to claim 1, characterized in that: The bottom of the outer shell (1) is symmetrically provided with connecting plates (12).

4. The detachable coil heat exchanger device according to claim 1, characterized in that: A sign holder (13) is provided on the top of the outer casing (1).

5. The detachable coil heat exchanger device according to claim 1, characterized in that: An exhaust hole (14) is provided on one side of the flange (2).

6. The detachable coil heat exchanger device according to claim 1, characterized in that: The flushing fluid outlet (11) and flushing fluid inlet (10) are respectively connected to the coil (5) via pipe fittings (9).

7. The detachable coil heat exchanger device according to claim 6, characterized in that: The outer wall of the flange (2) is provided with a coil connector assembly 1 that is welded together with the coil (5). The end of the coil connector assembly 1 away from the coil (5) is welded together with the pipe connector (9). The end of the pipe connector (9) away from the coil connector assembly 1 is provided with an external thread. The flushing fluid outlet (11) / flushing fluid inlet (10) is provided with an internal thread that matches the external thread.

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