A heat exchanger and method of use thereof

Abstract

The application discloses a heat exchanger and a use method thereof, and belongs to the technical field of heat exchangers. The heat exchanger comprises a heat exchanger body, the heat exchanger body comprises a tube pass and a shell pass, a first water inlet and a first water outlet are arranged on the shell pass in communication, an air inlet and an air outlet are arranged on the tube pass in communication, the heat exchanger further comprises a water supply tank, the water supply tank is located below the heat exchanger body, a water pumping assembly is installed on the water supply tank, the water pumping assembly is used for pumping water in the water supply tank into the shell pass, a gas collecting assembly is arranged in the water supply tank, and the gas collecting assembly is used for collecting the gas with residual heat discharged from the air outlet. The heat exchanger can collect the gas with heat output by the heat exchanger body through the gas collecting assembly, water is injected into the collecting tank, the heat in the gas collecting assembly can be absorbed, and the waste of heat is reduced. The heat exchanger can heat the water with substandard heat again by injecting the water with substandard heat output by the heat exchanger body into the collecting tank again.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of heat exchanger, and particularly relates to a heat exchanger and a use method thereof. BACKGROUND

[0002] The heat exchanger is a device for transferring part of the heat of hot fluid to cold fluid, also known as heat exchanger. The heat exchanger plays an important role in chemical industry, petroleum industry, power industry, food industry and many other industrial productions. In chemical production, the heat exchanger can be used as heater, cooler, condenser, evaporator and reboiler, and is widely applied.

[0003] The water-gas heat exchanger inputs cold water and hot gas, and the cold water absorbs the heat of the hot gas, so that the temperature of the output water is increased. However, the output gas in the water-gas heat exchanger still has a certain amount of heat, and if the gas is directly discharged, energy will be wasted. In addition, the temperature of the output hot water is difficult to control. To solve the above problems, the present application provides a heat exchanger and a use method thereof.

[0004] It should be noted that the above content belongs to the technical cognition range of the inventor and does not necessarily constitute the prior art. SUMMARY

[0005] To solve the above problems, the purpose of the present application is to provide a heat exchanger and a use method thereof. By arranging the gas collecting assembly, the gas with heat output from the heat exchanger body can be collected. By injecting water into the collecting tank, the heat in the gas collecting assembly can be absorbed, and the temperature of the water in the collecting tank can be increased, thereby reducing the waste of heat.

[0006] To achieve the above purpose, the present application provides a heat exchanger, which comprises a heat exchanger body, the heat exchanger body comprises a tube pass and a shell pass, a first water inlet and a first water outlet are communicated on the shell pass, and a gas inlet and a gas outlet are communicated on the tube pass. The heat exchanger further comprises a water supply tank, the water supply tank is located below the heat exchanger body, a water pumping assembly is installed on the water supply tank, the water pumping assembly is used for pumping water in the water supply tank into the shell pass, and a gas collecting assembly is arranged in the water supply tank, the gas collecting assembly is used for collecting the gas with residual heat discharged from the gas outlet.

[0007] Temperature sensors are arranged in the gas outlet and the first water outlet.

[0008] Further, the gas collecting assembly comprises a plurality of gas collecting cylinders installed on the top plate of the water supply tank, the openings of the gas collecting cylinders are located outside the tank body, the bottoms of the gas collecting cylinders are located in the tank body, a piston is slidably arranged in the gas collecting cylinder, a first gas outlet pipe is communicated with the bottom of the gas collecting cylinder, a third electromagnetic valve is installed on the first gas outlet pipe, a support frame is fixed on the gas collecting cylinder, a vertical electric push rod is fixed on the support frame, the electric push rod is located directly above the piston, a distance sensor for detecting the height of the piston is arranged below the support frame, and an air inlet pipe is communicated with the bottom of the gas collecting cylinder.

[0009] The gas collecting assembly further comprises a second gas outlet pipe connected to the gas outlet, a fourth electromagnetic valve mounted on the second gas outlet pipe, a third connecting pipe connected to the gas outlet, a fifth electromagnetic valve mounted on the third connecting pipe, and a main pipe communicated on the third connecting pipe, wherein the gas inlet pipe is communicated with the main pipe, and a sixth electromagnetic valve is mounted on the gas inlet pipe.

[0010] Further, a water outlet pipe is communicated on the first water outlet, a first electromagnetic valve is mounted on the water outlet pipe, a first connecting pipe is further communicated on the first water outlet, the first connecting pipe is communicated with the water supply tank, and a second electromagnetic valve is mounted on the first connecting pipe.

[0011] Further, the water pumping assembly comprises a water pump mounted on one side of the water supply tank, the water pump is used to pump water in the water supply tank, and a second connecting pipe connected to the first water inlet is mounted on the water outlet of the water pump.

[0012] Further, the water supply tank comprises a tank body, a sixth partition plate is arranged in the tank body, a vertical seventh partition plate is vertically arranged above one end of the sixth partition plate, a gap is left between the one end of the sixth partition plate provided with the seventh partition plate and the water supply tank, a gap is left between the upper end of the seventh partition plate and the water supply tank, a second water inlet pipe is communicated on the tank body, and the second water inlet pipe is located above the sixth partition plate.

[0013] Further, a horizontal first partition plate is fixed in the shell channel, a gap is arranged at the end of the first partition plate away from the tube channel, and the first water inlet and the first water outlet are respectively located on the two sides of the first partition plate.

[0014] A vertical fourth partition plate is arranged between the tube channel and the shell channel.

[0015] Further, a horizontal fifth partition plate is arranged in the tube channel, the gas inlet and the gas outlet are respectively located on the two sides of the fifth partition plate, a plurality of U-shaped pipes are arranged in the heat exchanger body, the U-shaped pipes are fixed on the fourth partition plate, and the two ends of the U-shaped pipes are respectively located on the two sides of the fifth partition plate.

[0016] Further, vertical second partition plates are arranged on the inner walls of the two sides of the shell channel, third partition plates are fixed on the two sides of the first partition plate, and the second partition plates and the third partition plates are staggered.

[0017] Further, the use method is as follows:

[0018] The third electromagnetic valve is opened to control the first gas outlet pipe to be opened, the piston is moved by starting the electric push rod to discharge the gas below the piston in the gas collecting cylinder, and then the third electromagnetic valve is closed.

[0019] The water pump is started to pump the water in the tank body into the shell channel, and the hot gas is introduced from the gas inlet, and the hot gas is output from the gas outlet after passing through the U-shaped pipes.

[0020] When the temperature sensor in the first outlet detects a value lower than the preset value, the second solenoid valve is closed and the first solenoid valve is opened, allowing hot water in the heat exchanger body to be discharged from the outlet pipe. When the temperature sensor in the first outlet detects a value higher than the preset value, the second solenoid valve is opened and the first solenoid valve is closed, allowing hot water with an unsuitable temperature to enter the water supply tank.

[0021] When the temperature sensor at the outlet is below the preset value, the fifth solenoid valve closes and the fourth solenoid valve opens, allowing gas from the heat exchanger body to exit through the second outlet pipe. When the temperature sensor at the outlet is above the preset value, the fifth solenoid valve opens and the fourth solenoid valve closes, allowing hot gas to enter the main pipe. The corresponding sixth solenoid valve opens, allowing gas from the main pipe to flow into the corresponding gas collecting cylinder, thus pushing the piston upward. The piston's rising height is determined by the distance sensor. When the preset value is reached, the corresponding sixth solenoid valve closes, and then the other sixth solenoid valves open to fill the corresponding gas collecting cylinders. Cold water is injected into the chamber through the second water inlet pipe. The cold water passes through all the gas collecting cylinders and exits from the gap above the seventh partition to below the sixth partition. The cold water passing through the gas collecting cylinders causes the piston inside to descend. The gas temperature is determined by the distance sensor. When the temperature reaches the preset value, the third solenoid valve opens again, activating the electric push rod to control the gas discharge from the gas collecting cylinder, waiting for gas collection to resume.

[0022] The heat exchanger and its usage method proposed in this invention can bring the following beneficial effects:

[0023] 1. The heat exchanger of the present invention can collect the hot gas output from the heat exchanger body by setting up a gas collection component. By injecting water into the collection box, the heat in the gas collection component can be absorbed, which can increase the water temperature in the collection box and reduce the waste of heat.

[0024] 2. The heat exchanger of the present invention can reheat water that does not meet the required heat output by the heat exchanger body by re-injecting it into the collection tank, and can conveniently adjust the output water temperature of the heat exchanger body as needed.

[0025] 3. The heat exchanger of the present invention is equipped with a distance sensor that can detect the piston height. On the one hand, it can determine the amount of gas when filling the gas collection cylinder with gas based on the piston height. On the other hand, it can determine the temperature of the gas in the gas collection cylinder when cooling the gas collection cylinder. It can achieve multiple functions in one machine and save equipment costs. Attached Figure Description

[0026] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this invention, illustrate exemplary embodiments of the invention and are used to explain the invention, but do not constitute an undue limitation of the invention. In the drawings:

[0027] Figure 1 It is a structure schematic view of a heat exchanger of the present application.

[0028] Figure 2 It is a structure schematic view of a heat exchanger of the present application.

[0029] Figure 3 It is Figure 2 It is an enlarged structure schematic view of A in the middle.

[0030] Figure 4 It is Figure 2 It is an enlarged structure schematic view of B in the middle. DETAILED DESCRIPTION

[0031] In order to more clearly illustrate the overall concept of the present application, the following will be described in detail with reference to the accompanying drawings.

[0032] In the description of the present application, it should be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship shown in the drawings based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0033] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features referred to. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0034] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected, or it can be communicated; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0035] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. In the description of the present application, the description of the terms "one scheme", "some schemes", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the scheme or example are included in at least one scheme or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same scheme or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more schemes or examples.

[0036] The embodiment of the present application provides a heat exchanger, which comprises a heat exchanger body 1, as shown in the drawings. Figure 1 The heat exchanger body 1 comprises a tube pass 12 and a shell pass 11, the shell pass 11 is provided with a first water inlet 17 and a first water outlet 18 in communication, and the tube pass 12 is provided with an air inlet 15 and an air outlet 16 in communication.

[0037] The heat exchanger further comprises a water supply tank 2, the water supply tank 2 is located below the heat exchanger body 1, a water pumping assembly 4 is installed on the water supply tank 2, the water pumping assembly 4 is used for pumping water in the water supply tank 2 into the shell pass 11, and a gas collecting assembly 3 is arranged in the water supply tank 2, the gas collecting assembly 3 is used for collecting the gas with waste heat discharged from the air outlet 16.

[0038] The first water outlet 18 is provided with a water outlet pipe 112 in communication, the water outlet pipe 112 is installed with a first electromagnetic valve 113, and the first water outlet 18 is further provided with a first connecting pipe 114 in communication, the first connecting pipe 114 is in communication with the water supply tank 2, and the first connecting pipe 114 is installed with a second electromagnetic valve 115.

[0039] The water pumping assembly 4 comprises a water pump 41 installed on one side of the water supply tank 2, the water pump 41 is used for pumping water in the water supply tank 2, and a water outlet of the water pump 41 is installed with a second connecting pipe 42 connected with the first water inlet 17.

[0040] The shell pass 11 is fixed with a horizontal first partition plate 19, as shown in the drawings. Figure 2 The end of the first partition plate 19 away from the tube pass 12 is provided with a notch, and the first water inlet 17 and the first water outlet 18 are located on the two sides of the first partition plate 19 respectively.

[0041] The fourth partition plate 13 is arranged vertically between the tube pass 12 and the shell pass 11, the second partition plate 111 is arranged vertically on the inner wall of the shell pass 11, and the third partition plate is fixed on the two sides of the first partition plate 19.

[0042] The fifth partition plate 14 is horizontally arranged in the tube channel 12, and the air inlet 15 and the air outlet 16 are arranged on two sides of the fifth partition plate 14 respectively.

[0043] The water supply tank 2 comprises a tank body 21, and the sixth partition plate 22 is arranged in the tank body 21. Figure 3 As shown in the figure, the second water inlet pipe is located above the sixth partition plate 22.

[0044] The gas collecting assembly 3 comprises a plurality of gas collecting cylinders 31 installed on the top plate of the water supply tank 2, the openings of the gas collecting cylinders 31 are located outside the tank body 21, the bottoms of the gas collecting cylinders 31 are located in the tank body 21, the pistons 32 are slidably arranged in the gas collecting cylinders 31, the first air outlet pipes 33 are in communication with the bottoms of the gas collecting cylinders 31, the third electromagnetic valves 34 are installed on the first air outlet pipes 33, the support frames 35 are fixed on the gas collecting cylinders 31, the vertical electric push rods 36 are fixed on the support frames 35 and located directly above the pistons 32, the distance sensors 37 for detecting the height of the pistons 32 are arranged below the support frames 35, the distance sensors 37 are electrically connected with the preset control system, and the air inlet pipes 313 are in communication with the bottoms of the gas collecting cylinders 31.

[0045] The gas collecting assembly 3 further comprises the second air outlet pipes 38 connected with the air outlet 16, the fourth electromagnetic valves 39 are installed on the second air outlet pipes 38, the third connecting pipes 310 are connected with the air outlet 16, the fifth electromagnetic valves 311 are installed on the third connecting pipes 310, the main pipes 312 are in communication with the third connecting pipes 310, the air inlet pipes 313 are in communication with the main pipes 312, and the sixth electromagnetic valves 314 are installed on the air inlet pipes 313.

[0046] The temperature sensors are arranged in the air outlet 16 and the first water outlet 18.

[0047] A use method of the heat exchanger, and the use method is as follows:

[0048] The third electromagnetic valves 34 are opened to control the first air outlet pipes 33 to be opened, the pistons 32 are moved by starting the electric push rods 36, the gas below the pistons in the gas collecting cylinders 31 is discharged, and then the third electromagnetic valves 34 are closed.

[0049] The water pump 41 is started to pump the water in the tank body 21 into the shell channel 11, and the hot gas is introduced from the air inlet 15, and the hot gas is output from the air outlet 16 after passing through the U-shaped pipes 110.

[0050] When the temperature sensor in the first water outlet 18 detects a value lower than the preset value, the second electromagnetic valve 115 is closed, and the first electromagnetic valve 113 is opened, so that the hot water in the heat exchanger body 1 is discharged from the water outlet pipe 112; when the temperature sensor in the first water outlet 18 detects a value higher than the preset value, the second electromagnetic valve 115 is opened, and the first electromagnetic valve 113 is closed, so that the hot water with a water temperature that does not meet the standard enters the water supply tank 2, facilitating subsequent heating again.

[0051] When the temperature sensor in the gas outlet 16 detects a value lower than the preset value, the fifth electromagnetic valve 311 is closed, and the fourth electromagnetic valve 39 is opened, so that the gas in the heat exchanger body 1 is discharged from the second gas outlet pipe 38; when the temperature sensor in the gas outlet 16 detects a value higher than the preset value, the fifth electromagnetic valve 311 is opened, and the fourth electromagnetic valve 39 is closed, so that the hot gas enters the total pipe 312, and the corresponding sixth electromagnetic valve 314 is opened, so that the gas in the total pipe 312 flows into the corresponding gas collecting cylinder 31, thereby pushing the piston 32 to rise, and the distance sensor 37 detects the rising height of the piston 32, and when the preset value is reached, the corresponding sixth electromagnetic valve 314 is closed, and then the other sixth electromagnetic valves 314 are opened to charge the corresponding gas collecting cylinders 31, and cold water is injected into the tank 21 through the second water inlet pipe 24, and the cold water is discharged from the gap above the seventh partition plate 23 to below the sixth partition plate 22 after flowing through all the gas collecting cylinders 31, the cold water flowing through the gas collecting cylinders 31 will cool the gas therein, and the water flowing through the gas collecting cylinders 31 will be heated, the pressure below the piston in the gas collecting cylinder 31 decreases, and the piston 32 descends, and the temperature of the gas is determined by the distance detected by the distance sensor 37, and when the temperature reaches the preset value, the third electromagnetic valve 34 is opened again, the electric push rod 36 is started, the gas in the gas collecting cylinder 31 is discharged, and waiting for gas collection again.

[0052] Each of the embodiments in the specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment mainly explains the difference from other embodiments. Especially, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the related parts can be referred to the part of the method embodiment.

[0053] The above only describes the embodiments of the present application and is not used to limit the present application. The present application can have various changes and modifications for those skilled in the art. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application shall be included in the scope of claims of the present application.

Claims

1. A heat exchanger, comprising a heat exchanger body (1), the heat exchanger body (1) comprising a tube side (12) and a shell side (11), the shell side (11) being connected to a first water inlet (17) and a first water outlet (18), and the tube side (12) being connected to an air inlet (15) and an air outlet (16), characterized in that, The heat exchanger also includes a water supply tank (2), which is located below the heat exchanger body (1). A water pumping assembly (4) is installed on the water supply tank (2). The water pumping assembly (4) is used to pump water from the water supply tank (2) into the shell side (11). A gas collecting assembly (3) is provided inside the water supply tank (2). The gas collecting assembly (3) is used to collect the gas with residual heat discharged from the gas outlet (16). Temperature sensors are provided in both the air outlet (16) and the first water outlet (18); The gas collection assembly (3) includes several gas collection cylinders (31) installed on the top plate of the water supply tank (2). The opening of the gas collection cylinder (31) is located outside the box body (21), and the bottom of the gas collection cylinder (31) is located inside the box body (21). A piston (32) is slidably provided inside the gas collection cylinder (31). A first air outlet pipe (33) is connected to the bottom of the gas collection cylinder (31). A third solenoid valve (34) is installed on the first air outlet pipe (33). A support frame (35) is fixed on the gas collection cylinder (31). A vertical electric push rod (36) is fixed on the support frame (35). The electric push rod (36) is located directly above the piston (32). A distance sensor (37) is used to detect the height of the piston (32) below the support frame (35). An air inlet pipe (313) is connected to the bottom of the gas collection cylinder (31). The gas collection assembly (3) also includes a second gas outlet pipe (38) connected to the gas outlet (16), a fourth solenoid valve (39) installed on the second gas outlet pipe, a third connecting pipe (310) connected to the gas outlet (16), a fifth solenoid valve (311) installed on the third connecting pipe (310), a main pipe (312) connected to the third connecting pipe (310), an air inlet pipe (313) connected to the main pipe (312), and a sixth solenoid valve (314) installed on the air inlet pipe (313). The water supply tank (2) includes a tank body (21), a sixth partition (22) is provided inside the tank body (21), a vertical seventh partition (23) is provided above one end of the sixth partition (22), a gap is left between the end of the sixth partition (22) with the seventh partition (23) and the water supply tank (2), a gap is left between the upper end of the seventh partition (23) and the water supply tank (2), and a second water inlet pipe (24) is connected to the tank body (21), the second water inlet pipe is located above the sixth partition (22); When the temperature sensor in the outlet (16) detects a value lower than the preset value, the fifth solenoid valve (311) is closed and the fourth solenoid valve (39) is opened, allowing the gas in the heat exchanger body (1) to be discharged from the second outlet pipe (38). When the temperature sensor in the outlet (16) detects a value higher than the preset value, the fifth solenoid valve (311) is opened and the fourth solenoid valve (39) is closed, allowing hot gas to enter the main pipe (312). The corresponding sixth solenoid valve (314) is opened, allowing the gas in the main pipe (312) to flow into the corresponding gas collecting cylinder (31), thereby pushing the piston (32) to rise. The rising height of the piston (32) is determined by the detection distance of the distance sensor (37). When the preset value is reached, the corresponding sixth solenoid valve (314) is closed, and then the other sixth solenoid valves (314) are opened to fill the corresponding gas collection cylinder (31). Cold water is injected into the box (21) through the second water inlet pipe (24). After passing through all the gas collection cylinders (31) in sequence, the cold water is discharged from the gap above the seventh partition (23) to the bottom of the sixth partition (22). The cold water passes through the gas collection cylinder (31) and causes the piston (32) inside it to descend. The gas temperature is determined by the distance detected by the distance sensor (37). When the temperature reaches the preset value, the third solenoid valve (34) is opened again, the electric push rod (36) is started, and the gas in the gas collection cylinder (31) is discharged, waiting for gas to be collected again.

2. A heat exchanger according to claim 1, characterized in that, The first outlet (18) is connected to a water outlet pipe (112), and a first solenoid valve (113) is installed on the water supply pipe (112). The first outlet (18) is also connected to a first connecting pipe (114), which is connected to the water supply tank (2). A second solenoid valve (115) is installed on the first connecting pipe (114).

3. A heat exchanger according to claim 2, characterized in that, The pumping assembly (4) includes a water pump (41) installed on one side of the water supply tank (2). The water pump (41) is used to draw water from the water supply tank (2). The outlet of the water pump (41) is equipped with a second connecting pipe (42) that connects to the first inlet (17).

4. A heat exchanger according to claim 3, characterized in that, A horizontal first partition (19) is fixed inside the shell side (11). The first partition (19) has a notch at one end away from the tube side (12). The first inlet (17) and the first outlet (18) are located on both sides of the first partition (19). A vertical fourth partition (13) is provided between the tube side (12) and the shell side (11).

5. A heat exchanger according to claim 4, characterized in that, A horizontal fifth partition (14) is provided inside the tube side (12). The air inlet (15) and the air outlet (16) are located on both sides of the fifth partition (14). Several U-shaped tubes (110) are provided inside the heat exchanger body (1). The U-shaped tubes (110) are fixed on the fourth partition (13). The two ends of the U-shaped tubes (110) are located on both sides of the fifth partition (14).

6. A heat exchanger according to claim 5, characterized in that, The inner walls on both sides of the shell side (11) are provided with vertical second partitions (111), and the first partition (19) is fixed with third partitions on both sides. The second partitions (111) and the third partitions are staggered.

7. The method of using a heat exchanger according to claim 6, characterized in that, The usage method is as follows: Open the third solenoid valve (34) to control the first outlet pipe (33) to open, and push the piston (32) to move by starting the electric push rod (36) to discharge the gas below the piston in the gas collecting cylinder (31), and then close the third solenoid valve (34); Start the water pump (41) to pump the water in the tank (21) into the shell side (11), and at the same time, pass the hot air in through the air inlet (15). The hot air passes through the U-shaped tube (110) and is output from the air outlet (16). When the temperature sensor in the first outlet (18) detects a value lower than the preset value, the second solenoid valve (115) is closed and the first solenoid valve (113) is opened, so that the hot water in the heat exchanger body (1) is discharged from the outlet pipe (112). When the temperature sensor in the first outlet (18) detects a value higher than the preset value, the second solenoid valve (115) is opened and the first solenoid valve (113) is closed, so that the hot water with a substandard temperature enters the water supply tank (2).

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