Cold flow distribution device of high-low pressure heat exchanger

Abstract

The utility model discloses a cold flow distribution device of a high-low pressure heat exchanger, relates to the field of heat exchangers, improves the situation that cold flow distribution is not uniform in the heat exchanger, and comprises a heat exchanger shell, sealing covers are arranged at the two ends of the heat exchanger shell, and heat exchange pipes are arranged in the heat exchanger shell in an annular array at equal intervals. An acceleration assembly is fixedly installed at one end of the heat exchange pipe, and a guide pipe is fixedly installed at the top of the acceleration assembly. In the using process, a worker opens the sealing cover, then refrigerants are guided into the guide pipe, then the refrigerants are accelerated for the first time through the conical pipe in the guide pipe, then the refrigerants are accelerated for the second time through the fan in a vortex shape, and finally the refrigerants are accelerated for the third time through cooperation of the dispersing pipe and the mounting pipe. The flowing speed of a refrigerant in the heat exchanger is increased, the heat exchange effect of the heat exchanger is improved, and the situation that cold flow distribution in the heat exchanger is not uniform is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of heat exchanger technology, specifically a cold flow distribution device for high and low pressure heat exchangers. Background Technology

[0002] A heat exchanger is a device that transfers some of the heat from a hot fluid to a cold fluid; it is also called a heat exchanger. Heat exchangers play an important role in chemical, petroleum, power, food, and many other industrial productions. In chemical production, heat exchangers can be used as heaters, coolers, condensers, evaporators, and reboilers, and are widely used.

[0003] For example, utility model CN211424750U discloses a refrigerant distribution device for a microchannel heat exchanger, including a liquid collecting pipe with a two-phase refrigerant inlet and multiple two-phase refrigerant outlets, and a distributor connected between the inlet and outlets. The distributor is a cylindrical cavity with a central partition parallel to its centerline, dividing the cavity into a first chamber and a second chamber. Multiple two-phase refrigerant outlets are located on the side of the second chamber and connected to flat tubes. The central partition has a hole at its top and bottom. By employing this structure and method, this utility model utilizes the inertial and gravitational forces inherent in the liquid entering the collecting pipe. By overcoming these forces, the refrigerant can be evenly distributed within the collecting pipe and then enter the flat tubes of each microchannel for heat exchange with the circulating air.

[0004] When using a heat exchanger, the slow flow rate of the cold air leads to uneven distribution of cold air inside the heat exchange tubes. This can cause damage to areas with excessive heat, resulting in heat exchanger malfunction. Therefore, a cold air distribution device for high and low pressure heat exchangers is proposed to address this issue. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the problems mentioned in the background art, this utility model provides a cold flow distribution device for high and low pressure heat exchangers. This device can solve the problem that when using a heat exchanger, the slow flow rate of the cold flow leads to uneven cold flow distribution inside the heat exchange tubes, causing damage to areas with excessive heat energy and resulting in heat exchanger malfunction.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a high and low pressure heat exchanger cold flow distribution device, including a heat exchanger shell, both ends of which are provided with sealing caps, heat exchange tubes are arranged in a ring array at equal intervals inside the heat exchanger shell, an acceleration component is fixedly installed at one end of the heat exchange tubes, a guide tube is fixedly installed at the top of the acceleration component, and an air inlet component is provided inside the guide tube.

[0009] The acceleration component includes a connecting pipe fixedly installed at one end of a heat exchange tube, an installation pipe fixedly installed inside the connecting pipe, a dispersion pipe fixedly installed at one end of the installation pipe, an energy-concentrating ring fixedly installed at the other end of the connecting pipe, and a guide pipe fixedly installed at the top of the energy-concentrating ring.

[0010] The air intake assembly includes a filter plate fixedly installed inside the guide tube, a self-rotating fan is provided below the filter plate, a tapered tube is provided above the filter plate, and a sealing cap is threaded to the top of the guide tube.

[0011] Preferably, the diameter of the connection between the mounting tube and the dispersing tube is smaller than the diameter of the mounting tube and the dispersing tube.

[0012] Preferably, the connecting pipes are installed in a ring array at equal intervals on the surface of the energy-concentrating ring, and the number of connecting pipes is the same as the number of heat exchange pipes, and the diameter of the connecting pipes is smaller than the diameter of the heat exchange pipes.

[0013] Preferably, the surface of the sealing cap is provided with a through groove, the size of which is adapted to the size of the guide tube, and a sealing ring is provided at the connection between the guide tube and the sealing cap.

[0014] Preferably, support plates are fixedly installed on both sides of the bottom of the heat exchanger shell, and mounting plates are provided at the bottom of the support plates. Connecting rods to improve stability are provided between the support plates.

[0015] Preferably, the surfaces of the sealing cover and the heat exchanger shell are provided with a plurality of threaded grooves in a ring array at equal intervals, and the internal threads of the threaded grooves are provided with positioning bolts, and a rubber ring is provided at the connection between the sealing cover and the heat exchanger shell.

[0016] (III) Beneficial Effects

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] This invention utilizes the combined use of an acceleration component, a guide tube, and an intake component. During use, the operator opens the sealed cover and introduces the refrigerant into the guide tube. The conical tube inside the guide tube then accelerates the refrigerant for the first time. Subsequently, a fan creates a vortex around the refrigerant for a second acceleration. Finally, the distribution tube and the installation tube work together to accelerate the refrigerant a third time. This increases the speed at which the refrigerant flows inside the heat exchanger, improves the heat exchange efficiency, and reduces the occurrence of uneven cold flow distribution inside the heat exchanger. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments 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 these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the disassembled structure of this utility model;

[0022] Figure 3 This is a schematic diagram of the heat exchange tube structure of this utility model;

[0023] Figure 4 This is a schematic diagram of the air intake assembly structure of this utility model;

[0024] Figure 5 This utility model Figure 2 Enlarged view of the structure at point A in the middle.

[0025] In the diagram: 1. Heat exchanger shell; 2. Sealing cover; 3. Heat exchange tube; 4. Acceleration assembly; 41. Connecting pipe; 42. Mounting pipe; 43. Dispersion pipe; 44. Energy-concentrating ring; 5. Guide pipe; 6. Air intake assembly; 61. Filter plate; 62. Fan; 63. Conical tube; 64. Sealing cover. Detailed Implementation

[0026] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0027] Example 1

[0028] Reference Figures 1 to 5As shown, this is the first embodiment of the present invention. This embodiment provides a cold flow distribution device for a high and low pressure heat exchanger, including a heat exchanger shell 1. Support plates are fixedly installed on both sides of the bottom of the heat exchanger shell 1. An installation plate is provided at the bottom of the support plates. A connecting rod to improve stability is provided between the support plates. Sealing caps 2 are provided at both ends of the heat exchanger shell 1. Several threaded grooves are equidistantly arranged in a ring array on the surface of the sealing caps 2 and the heat exchanger shell 1. A positioning bolt is passed through the internal thread of the threaded groove. A rubber ring is provided at the connection between the sealing caps 2 and the heat exchanger shell 1. Heat exchange tubes 3 are equidistantly arranged in a ring array inside the heat exchanger shell 1. An acceleration component 4 is fixedly installed at one end of the heat exchange tube 3. A guide tube 5 is fixedly installed on the top of the acceleration component 4. A through groove is opened on the surface of the sealing cap 2. The size of the through groove is adapted to the size of the guide tube 5.

[0029] The acceleration component 4 includes a connecting pipe 41 fixedly installed at one end of the heat exchange tube 3, an installation pipe 42 fixedly installed inside the connecting pipe 41, a dispersion pipe 43 fixedly installed at one end of the installation pipe 42, an energy-concentrating ring 44 fixedly installed at the other end of the connecting pipe 41, and a guide pipe 5 fixedly installed at the top of the energy-concentrating ring 44.

[0030] Specifically, the diameter of the connection between the mounting pipe 42 and the dispersion pipe 43 is smaller than the diameter of the mounting pipe 42 and the dispersion pipe 43. The connecting pipes 41 are installed in a ring array at equal intervals on the surface of the energy-concentrating ring 44, and the number of connecting pipes 41 is the same as the number of heat exchange pipes 3. The diameter of the connecting pipes 41 is smaller than the diameter of the heat exchange pipes 3.

[0031] Furthermore, after the gas enters the energy-concentrating ring 44, it will rotate and circulate inside the energy-concentrating ring 44. When the gas rotates, it will enter the connecting pipe 41. The gas entering the connecting pipe 41 will then enter the mounting pipe 42. The gas will be accelerated inside the mounting pipe 42. Because the capacity inside the mounting pipe 42 is small, the gas flow rate inside the mounting pipe 42 is faster. When the gas enters the connection, because the diameter of the connection is smaller than the diameter of the mounting pipe 42, the gas will be accelerated again. After the gas enters the dispersion pipe 43, it will then transport refrigerant gas to the heat exchange pipe 3. When transporting the gas, the gas will flow in an umbrella shape, which increases the flow rate of the refrigerant gas inside the heat exchange pipe 3 and improves the heat exchange efficiency.

[0032] Example 2

[0033] Reference Figures 1 to 5 As shown, this is the second embodiment of the present invention. This embodiment is based on the previous embodiment. A sealing ring is provided at the connection between the guide tube 5 and the sealing cover 2, and an air intake component 6 is provided inside the guide tube 5.

[0034] Specifically, the air intake assembly 6 includes a filter plate 61 fixedly installed inside the guide tube 5, a self-rotating fan 62 is provided below the filter plate 61, a tapered tube 63 is provided above the filter plate 61, and a sealing cap 64 is threadedly connected to the top of the guide tube 5.

[0035] Furthermore, during use, the refrigerant gas is introduced into the guide tube 5. The gas will first enter the conical tube 63. Because the conical tube 63 has a large diameter at the top and a small diameter at the bottom, the gas will flow faster at the outlet of the conical tube 63. The filter plate 61 will filter the flowing gas. The filtered gas will form a vortex as the fan 62 rotates. The gas flow rate in the vortex state will be further accelerated, increasing the flow rate of the refrigerant gas.

[0036] The working principle and usage process of this utility model are as follows: First, the personnel open the sealing cover 64 and then introduce the refrigerant into the interior of the guide tube 5. Then, the tapered tube 63 inside the guide tube 5 accelerates the refrigerant for the first time. Then, the fan 62 forms a vortex shape for the refrigerant, accelerating it for the second time. Finally, the dispersing tube 43 and the mounting tube 42 cooperate to accelerate the refrigerant for the third time, thereby increasing the speed at which the refrigerant flows inside the heat exchanger.

[0037] It should be noted that in this paper, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

Claims

1. A cold flow distribution device for a high-low pressure heat exchanger, comprising a heat exchanger shell (1), characterized in that: The heat exchanger shell (1) is provided with sealing caps (2) at both ends. The heat exchanger shell (1) is provided with heat exchange tubes (3) arranged in a ring array at equal intervals. An acceleration component (4) is fixedly installed at one end of the heat exchange tube (3). A guide tube (5) is fixedly installed on the top of the acceleration component (4). An air intake component (6) is provided inside the guide tube (5). The acceleration component (4) includes a connecting pipe (41) fixedly installed at one end of the heat exchange tube (3), an installation pipe (42) fixedly installed inside the connecting pipe (41), a dispersion pipe (43) fixedly installed at one end of the installation pipe (42), an energy-concentrating ring (44) fixedly installed at the other end of the connecting pipe (41), and a guide pipe (5) fixedly installed at the top of the energy-concentrating ring (44). The air intake assembly (6) includes a filter plate (61) fixedly installed inside the guide tube (5), a self-rotating fan (62) is provided below the filter plate (61), a tapered tube (63) is provided above the filter plate (61), and a sealing cap (64) is threadedly connected to the top of the guide tube (5).

2. The high-low pressure heat exchanger cold flow distribution device according to claim 1, characterized in that: The diameter of the connection between the mounting tube (42) and the dispersing tube (43) is smaller than the diameter of the mounting tube (42) and the dispersing tube (43).

3. The high-low pressure heat exchanger cold flow distribution device according to claim 1, characterized in that: The connecting pipes (41) are installed in a ring array at equal intervals on the surface of the energy-concentrating ring (44), and the number of connecting pipes (41) is the same as the number of heat exchange pipes (3). The diameter of the connecting pipes (41) is smaller than the diameter of the heat exchange pipes (3).

4. The high-low pressure heat exchanger cold flow distribution device according to claim 1, characterized in that: The surface of the sealing cover (2) is provided with a through groove, the size of which is adapted to the size of the guide tube (5), and a sealing ring is provided at the connection between the guide tube (5) and the sealing cover (2).

5. The high-low pressure heat exchanger cold flow distribution device according to claim 1, characterized in that: Support plates are fixedly installed on both sides of the bottom of the heat exchanger shell (1), and mounting plates are provided at the bottom of the support plates. Connecting rods to improve stability are provided between the support plates.

6. The high-low pressure heat exchanger cold flow distribution device according to claim 1, characterized in that: The sealing cover (2) and the heat exchanger shell (1) are provided with a number of threaded grooves in an annular array at equal intervals. The internal threads of the threaded grooves are provided with positioning bolts. A rubber ring is provided at the connection between the sealing cover (2) and the heat exchanger shell (1).

Images