Heat exchanger for gas cooling

Abstract

The utility model discloses a heat exchanger for gas cooling, and particularly relates to the technical field of heat exchangers, which comprises a heat exchange box, a support arranged at the bottom end of the heat exchange box, a first sealing plate arranged at one end of the heat exchange box, a second sealing plate arranged at the other end of the heat exchange box, a water inlet pipe connected with the bottom end of one side of the first sealing plate, and a gas inlet pipe arranged above the water inlet pipe. The bottom end of one side of the second sealing plate is provided with an air outlet pipe, a water outlet pipe is arranged above the air outlet pipe, a flow baffle is installed in the heat exchange box, a plurality of ventilation pipes are inserted into the flow baffle, and the two ends of each ventilation pipe are connected with the first sealing plate and the second sealing plate correspondingly. Two filter cartridges are mounted on the connecting pipe, and a filter assembly is mounted in each filter cartridge. The utility model has the advantages that the gas cooling efficiency and effect can be improved, the service life of the breather pipe is prolonged, the sealing performance is enhanced, stable conveying of cold water is ensured, and impurities are convenient to clean.

Description

TECHNICAL FIELD

[0001] The utility model relates to heat exchanger technical field more specifically, the utility model relates to a kind of heat exchanger for gas cooling. BACKGROUND

[0002] In modern industrial production, energy utilization and many fields such as environmental control, gas cooling technology plays a vital role. As the core equipment for realizing gas cooling, the performance of heat exchanger directly affects production efficiency, energy consumption and product quality.

[0003] At present, the heat exchanger for gas cooling existing in the market exposes many problems in actual application. From the structure design level, the internal flow channel layout of part of heat exchanger is unreasonable, which leads to short contact time and limited contact area of gas and cooling medium. For example, in some traditional tube-type heat exchangers, gas flows in tube pass, and cooling medium flows in shell pass. Due to the structural limitation of tube pass and shell pass, gas and cooling medium cannot be fully mixed and heat exchanged, resulting in low cooling efficiency. Taking the cooling of synthesis gas in chemical production as an example, this unreasonable structure makes the cooling of synthesis gas insufficient, which affects the subsequent reaction process and product purity.

[0004] In terms of sealing performance, the sealing structure of existing heat exchanger also has great defects. The sealing gasket of many heat exchangers ages quickly and has single sealing mode, which is difficult to adapt to complex working environment. Under the working conditions of high temperature, high pressure or corrosive gas, the sealing gasket is easily damaged, resulting in gas leakage or cooling medium leakage. This not only causes energy waste, but also may pose a threat to the safety of working environment and operating personnel. For example, in the petroleum and chemical industry, once the leaked flammable and explosive gas meets a fire, it may cause serious safety accidents.

[0005] In addition, the impurity problem in cooling medium has been disturbing the stable operation of heat exchanger. Impurities accumulate in cooling medium and easily adhere to heat exchange surface to form a dirt layer. This dirt layer increases thermal resistance and reduces the heat transfer efficiency of heat exchanger, resulting in gradually deteriorating cooling effect. At the same time, impurities may also cause corrosion to heat exchange components, shorten the service life of heat exchanger and increase maintenance cost. In the metallurgical industry, cooling medium containing a large amount of metal oxide impurities may cause serious corrosion to the metal surface of heat exchanger, frequently replace heat exchange components, and greatly affect the continuity and economy of production.

[0006] Therefore, a heat exchanger for gas cooling is proposed. UTILITY MODEL CONTENT

[0007] In order to overcome the above-mentioned defects of the prior art, the utility model provides a heat exchanger for gas cooling to solve the problems raised in the above background.

[0008] To achieve the above object, the utility model provides following technical scheme: a kind of heat exchanger for gas cooling, including heat exchange box, the heat exchange box bottom end is equipped with support, one end of the heat exchange box is equipped with first sealing plate, the other end of the heat exchange box is equipped with second sealing plate, the first sealing plate one side bottom end is connected with water inlet pipe, the water inlet pipe upper portion is provided with air inlet pipe, the second sealing plate one side bottom end is provided with air outlet pipe, the air outlet pipe upper portion is provided with water outlet pipe, the heat exchange box is equipped with baffle, the baffle is inserted with multiple air pipes, multiple the air pipe two ends are connected with first sealing plate and second sealing plate respectively, each air pipe is sequentially communicated, and air inlet pipe is communicated with the air pipe of first end, the air outlet pipe is communicated with the air pipe of end, the water inlet pipe is connected with connecting pipe, the connecting pipe is connected with water delivery pipe, two filter cartridges are installed on the connecting pipe, and each filter cartridge is equipped with filter assembly.

[0009] Preferably, the first sealing plate and the second sealing plate are both provided with sealing pads at the connection with the heat exchange box, the sealing pads are T-shaped in cross section, and two grooves are formed on the outer surface of the sealing pads, the first sealing plate, the second sealing plate and the heat exchange box are all provided with annular grooves corresponding to the grooves, and the sealing pads are both provided with buckling hoops.

[0010] Preferably, a plurality of mounting grooves are formed on one side of the first sealing plate and the second sealing plate, the mounting grooves formed on the first sealing plate are sequentially communicated, and the mounting groove formed on the first end of the first sealing plate is communicated with the air inlet pipe, the mounting grooves formed on the second sealing plate are sequentially communicated, and the mounting groove formed on the end of the second sealing plate is communicated with the air outlet pipe.

[0011] Preferably, two filter cartridges are installed on the connecting pipe, a sealing cap is installed on the top end of each filter cartridge, an electromagnetic valve is installed on the bottom end of each filter cartridge, and a pressure sensor is installed on the connecting pipe behind each filter cartridge.

[0012] Preferably, the filter assembly comprises a motor, a rotating rod, a rotating disc and a filter plate, the motor is installed on the sealing cap, the motor output end is connected with the rotating rod, the bottom end of the rotating rod is connected with the rotating disc, and the bottom end of the rotating disc is welded with the filter plate.

[0013] Preferably, a filter part with filter holes is arranged in the middle of the filter plate, and blocking parts are arranged on both sides of the filter part, and the filter cartridge and the connecting pipe are respectively provided with water inlets and water outlets on both sides.

[0014] Preferably, the baffle is in spiral structure, and a plurality of through holes are formed on the baffle, each air pipe penetrates through the corresponding through hole, so that the two ends are connected with the corresponding mounting grooves.

[0015] The utility model has the following technical effects and advantages:

[0016] 1、Through the spiral path of cold water in the heat exchange box, the vent pipe can be completely covered, and the gas is lowered in the vent pipe for multiple times, so that the cold water can fully absorb the heat of the gas; the spiral structure of the flow baffle makes the cold water fill the heat exchange box and cover the vent pipe, thereby further improving the cooling efficiency and effect.

[0017] 2、The cold water is filtered through the filter assembly, so that impurities are prevented from adhering to the outer wall of the vent pipe to reduce the heat conduction efficiency and reduce the corrosion of the impurities on the vent pipe, thereby prolonging the service life of the vent pipe; the filter assembly is driven to rotate by the motor, so that the functions of filtering and blocking the cold water from entering can be realized, the filtering process can be flexibly controlled, the water pressure can be detected through the pressure sensor, the filter cartridge can be automatically switched, the impurities can be cleaned in time, the stable delivery of the cold water can be ensured, and the convenience of scale cleaning is improved.

[0018] 3、Through the cooperation of the T-shaped sealing gasket and the binding hoop, multiple seals are formed between the heat exchange box and the first and second sealing plates, and water leakage is effectively avoided. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a whole structure schematic view of the utility model.

[0020] Figure 2 It is a heat exchange box section structure schematic view of the utility model.

[0021] Figure 3 It is a vent pipe and flow baffle connection structure schematic view of the utility model.

[0022] Figure 4 It is a filter assembly structure schematic view of the utility model.

[0023] Figure 5 It is a second sealing plate structure schematic view of the utility model.

[0024] The reference signs are as follows: 1, heat exchange box; 2, support; 3, first sealing plate; 4, second sealing plate; 5, sealing gasket; 6, binding hoop; 7, water inlet pipe; 8, air inlet pipe; 9, air outlet pipe; 10, water outlet pipe; 11, connecting pipe; 12, water delivery pipe; 13, filter cartridge; 14, electromagnetic valve; 15, sealing cover; 16, filter assembly; 1601, motor; 1602, rotating rod; 1603, rotating disc; 1604, filter plate; 17, flow baffle; 18, vent pipe; 19, mounting groove. DETAILED DESCRIPTION

[0025] Clearly, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0026] As shown in the accompanying drawings of the embodiments of the present application, the technical schemes in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application. Figures 1-5 The utility model discloses a heat exchanger for gas cooling, including heat exchange box 1, the bottom end of heat exchange box 1 is installed with support 2, one end of heat exchange box 1 is installed with first sealing plate 3, the other end of heat exchange box 1 is installed with second sealing plate 4, the bottom end of one side of first sealing plate 3 is connected with water inlet pipe 7, the top of water inlet pipe 7 is provided with air inlet pipe 8, the bottom end of one side of second sealing plate 4 is provided with air outlet pipe 9, the top of air outlet pipe 9 is provided with water outlet pipe 10, the inside installation of heat exchange box 1 has baffle 17, the inside plug connection of baffle 17 has a plurality of air pipes 18, and the both ends of a plurality of air pipes 18 are connected with first sealing plate 3 and second sealing plate 4 respectively, and each air pipe 18 is communicated in turn, and air inlet pipe 8 is communicated with the air pipe 18 of first end, and air outlet pipe 9 is communicated with the air pipe 18 of last end, and water inlet pipe 7 is connected with connecting pipe 11, and connecting pipe 11 is connected with water delivery pipe 12, and two filter drums 13 are installed on connecting pipe 11, and the filter assembly 16 is installed in each filter drum 13.

[0027] In specific implementation, cold water is input through the water input pipe 12, and the air input pipe 8 is used to input the gas to be cooled. When the gas is cooled, the cold water from the water input pipe 12 enters the connecting pipe 11, enters the filter cartridge 13 in the open state, is filtered through the filter assembly 16, and then enters the heat exchange box 1 from the water input pipe 7. After being blocked by the flow baffle 17, the path of the cold water in the heat exchange box 1 is spiral-shaped, so that the cold water completely covers each air pipe 18, so that the gas input through the air input pipe 8 is sequentially input into each air pipe 18 and is quickly cooled. The path of the cold water enters from below, is spiral-shaped again, and is finally discharged from the water outlet pipe 10 on the other side. The cold water can fill the heat exchange box 1, and the gas input from the air input pipe 8 into the air pipe 18 slowly descends after being bent for multiple times and is finally discharged from the air outlet pipe 9. Therefore, the cold water can fully absorb the heat of the gas, the cooling efficiency and the cooling effect are improved, the cold water is filtered by the filter assembly 16 during the input of the cold water, and when the water pressure in the connecting pipe 11 is reduced during the filtering, it is indicated that the impurities in the filter cartridge 13 for filtering the cold water are too much, the amount of the cold water passing through is low, and then the filter cartridge 13 is closed and another filter cartridge 13 is used to filter and convey the cold water. Therefore, the impurities in the input cold water can be filtered and then enter the heat exchange box 1, the heat conduction efficiency is not reduced due to the attachment of the impurities to the outer wall of each air pipe 18, and the service life of the air pipe 18 is prolonged, and the cooling efficiency is improved.

[0028] The first sealing plate 3 and the second sealing plate 4 are connected with the heat exchange box 1, and sealing pads 5 are arranged at the connection positions of the first sealing plate 3 and the second sealing plate 4 and the heat exchange box 1. The cross section of each sealing pad 5 is T-shaped, and two bundle grooves are arranged on the outer surface of each sealing pad 5. An annular groove is arranged on the first sealing plate 3, the second sealing plate 4 and the heat exchange box 1 corresponding to each bundle groove. The bundle groove and the annular groove are matched with each other, so that the sealing pad 5 can be used to improve the sealing performance of the first sealing plate 3, the second sealing plate 4 and the heat exchange box 1. A bundle hoop 6 is arranged on each sealing pad 5.

[0029] In specific implementation, the sealing pad 5 is inserted into the gap between the heat exchange box 1 and the first sealing plate 3 and the second sealing plate 4 to perform the first sealing, and the bundle hoop 6 is bundled in the annular groove to form the sealing of the gap again, so that the sealing performance of the connection between the first sealing plate 3, the second sealing plate 4 and the heat exchange box 1 is improved, and the water leakage is avoided.

[0030] A plurality of installation grooves 19 are arranged on one side of the first sealing plate 3 and the second sealing plate 4. The installation grooves 19 arranged on the first sealing plate 3 are sequentially connected, and the installation groove 19 arranged at the front end of the first sealing plate 3 is connected with the air input pipe 8. The installation grooves 19 arranged on the second sealing plate 4 are sequentially connected, and the installation groove 19 arranged at the tail end of the second sealing plate 4 is connected with the air outlet pipe 9.

[0031] In specific implementation, the gas entering through the gas inlet pipe 8 enters the installation groove 19 at the first end of the first sealing plate 3, then enters the corresponding air pipe 18, then enters the installation groove 19 at the second sealing plate 4, and then is discharged from the other installation groove 19 of the second sealing plate 4 into the other air pipe 18 and enters the first sealing plate 3, thereby making the gas entering the heat exchange box 1 circulate multiple times, and finally being discharged from the gas outlet pipe 9 connected to the installation groove 19 at the end of the second sealing plate 4, thereby prolonging the time of the gas in the heat exchange box 1 and ensuring that the heat of the gas is fully absorbed by the input cold water, thereby improving the cooling effect.

[0032] The connecting pipe 11 is provided with two filter cartridges 13, the top end of each filter cartridge 13 is provided with a sealing cover 15, the bottom end of each filter cartridge 13 is provided with an electromagnetic valve 14, and the connecting pipe 11 at the rear side of each filter cartridge 13 is provided with a pressure sensor.

[0033] In specific implementation, the pressure sensor detects the water pressure of the cold water filtered by the filter cartridge 13, and when the water pressure is detected to be reduced under the condition that the flow rate of the water inlet pipe 12 is unchanged, it indicates that too much impurities are accumulated in the filter cartridge 13, thereby automatically closing the filter cartridge 13 and switching another filter cartridge 13 for filtering and conveying, and then opening the filter cartridge 13 with too much impurities through the electromagnetic valve 14, so as to clean the impurities, thereby ensuring stable conveying of the cold water, avoiding impurities from entering the heat exchange box 1 and adhering to the air pipe 18, improving the service life of the air pipe 18, ensuring the heat conduction effect, improving the cooling effect, and improving the convenience of cleaning the water scale.

[0034] The filter assembly 16 comprises a motor 1601, a rotating rod 1602, a rotating disc 1603, and a filter plate 1604, the motor 1601 is installed on the sealing cover 15, the output end of the motor 1601 is connected with the rotating rod 1602, the bottom end of the rotating rod 1602 is connected with the rotating disc 1603, and the bottom end of the rotating disc 1603 is welded with the filter plate 1604.

[0035] The filter plate 1604 is provided with a filter part with filter holes in the middle, and the filter part is provided with a blocking part on both sides, and the two sides where the corresponding filter cartridge 13 is connected with the connecting pipe 11 are respectively provided with a water inlet and a water outlet.

[0036] In specific implementation, the motor 1601 is operated to rotate the rotating rod 1602, so that the filter plate 1604 at the bottom end of the rotating disc 1603 rotates, so that the filter part of the filter plate 1604 is aligned with the water outlet, thereby being able to filter the entering cold water, and when the two blocking parts are respectively aligned with the water outlet and the water inlet, the filter cartridge 13 can be closed, thereby blocking the entry of the cold water.

[0037] The baffle 17 is in a spiral structure, and a plurality of through holes are formed in the baffle 17, and each air pipe 18 penetrates through a corresponding through hole, so that two ends are connected with corresponding installation grooves 19 respectively.

[0038] In specific implementation, the cold water entering the heat exchange box 1 flows in a spiral path from one end to the other end, the heat exchange box 1 is filled with cold water, each air pipe 18 is covered, and the cooling efficiency and cooling effect are improved.

[0039] The above only describes preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A heat exchanger for gas cooling, comprising a heat exchange chamber (1), characterized in that: A bracket (2) is installed at the bottom of the heat exchange box (1). A first sealing plate (3) is installed at one end of the heat exchange box (1), and a second sealing plate (4) is installed at the other end of the heat exchange box (1). A water inlet pipe (7) is connected to the bottom of one side of the first sealing plate (3). An air inlet pipe (8) is provided above the water inlet pipe (7). An air outlet pipe (9) is provided at the bottom of one side of the second sealing plate (4). A water outlet pipe (10) is provided above the air outlet pipe (9). A baffle plate (17) is installed inside the heat exchange box (1). Multiple tubes are inserted into the baffle plate (17). The air pipe (18) is connected at both ends to the first sealing plate (3) and the second sealing plate (4) respectively. The adjacent air pipes (18) are connected in sequence. The air inlet pipe (8) is connected to the air pipe (18) at the beginning. The air outlet pipe (9) is connected to the air pipe (18) at the end. The water inlet pipe (7) is connected to the connecting pipe (11). The connecting pipe (11) is connected to the water supply pipe (12). Two filter cylinders (13) are installed on the connecting pipe (11). Each filter cylinder (13) is equipped with a filter assembly (16).

2. A heat exchanger for gas cooling according to claim 1, characterized in that: Sealing gaskets (5) are installed at the connection between the first sealing plate (3) and the second sealing plate (4) and the heat exchange box (1). The sealing gasket (5) has a T-shaped cross-section and two binding grooves are opened on the outer surface of the sealing gasket (5). The first sealing plate (3), the second sealing plate (4) and the heat exchange box (1) corresponding to each binding groove are all provided with annular grooves. Binding hoops (6) are installed on the sealing gasket (5).

3. A heat exchanger for gas cooling according to claim 2, characterized in that: The first sealing plate (3) and the second sealing plate (4) each have multiple mounting slots (19) on one side. The multiple mounting slots (19) on the first sealing plate (3) are connected in sequence, and the mounting slot (19) at the head end of the first sealing plate (3) is connected to the air inlet pipe (8). The multiple mounting slots (19) on the second sealing plate (4) are connected in sequence, and the mounting slot (19) at the tail end of the second sealing plate (4) is connected to the air outlet pipe (9).

4. A heat exchanger for gas cooling according to claim 3, characterized in that: Each of the filter cartridges (13) is equipped with a sealing cap (15) at the top, a solenoid valve (14) at the bottom, and a pressure sensor on the connecting pipe (11) at the rear of each filter cartridge (13).

5. A heat exchanger for gas cooling according to claim 4, characterized in that: The filter assembly (16) includes a motor (1601), a rotating rod (1602), a turntable (1603), and a filter plate (1604). The motor (1601) is mounted on the sealing cover (15). The output end of the motor (1601) is connected to the rotating rod (1602). The bottom end of the rotating rod (1602) is connected to the turntable (1603). The bottom end of the turntable (1603) is welded to the filter plate (1604).

6. A heat exchanger for gas cooling according to claim 5, characterized in that: The filter plate (1604) has a filter section with filter holes in the middle, and a blocking section is provided on both sides of the filter section. The filter cylinder (13) is connected to the connecting pipe (11) on both sides, and an inlet and a outlet are respectively provided.

7. A heat exchanger for gas cooling according to claim 6, characterized in that: The baffle plate (17) has a spiral structure and multiple through holes are provided on the baffle plate (17). Each of the air pipes (18) passes through the corresponding through hole, so that both ends are connected to the corresponding mounting groove (19).

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