Heating medium water pipe type flue gas heat exchanger

Abstract

The utility model belongs to the technical field of heat exchangers, and particularly relates to a heating medium water pipe type flue gas heat exchanger which comprises a base, a heat conduction box fixed to the top of the base, a treatment box connected to one side of the heat conduction box, and a recovery mechanism comprising a water inlet pipe connected to the bottom of the heat conduction box and a water tank arranged at the bottom of the water inlet pipe. A valve body is arranged in the water inlet pipe, a control rod is fixed to one side of the valve body, a plurality of blocking rods are evenly fixed to the outer wall of one end of the control rod, and an observation pipe is connected to the side, opposite to the control rod, of the water inlet pipe. Through the arrangement of the recycling mechanism, water drops generated during heat exchange in the heat conduction box can be effectively collected, so that the problem that the heat exchange efficiency is low due to the fact that the water drops in the heat conduction box of an existing heat exchanger are difficult to collect is solved, and meanwhile the situation that water resources are lost is avoided; and therefore, the heat exchange efficiency of the flue gas is higher, and the practicability of the heat exchanger is greatly improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of heat exchangers, and in particular relates to a heat medium water tube type flue gas heat exchanger. Background Art

[0002] The flue gas heat exchanger is a device used to recover the heat energy in the flue gas generated during the combustion process. It transfers the heat in the flue gas to the heat medium, thereby realizing energy recovery and utilization, thereby realizing energy conversion and energy utilization. However, in power plants, the flue gas must be purified through multiple links such as heat exchanger cooling and flue gas desulfurization to achieve pollution-free flue gas emissions.

[0003] A Chinese patent with application number CN202220443351.X discloses a heat exchanger for a power plant. The heat exchanger for a power plant filters particulate impurities in the flue gas through an activated carbon filter, and the driving mechanism can frequently lift the dust collecting cylinder. In actual use, the flue gas can be decontaminated before heat exchange to avoid floating into the air to form haze, and to prevent impurities from accumulating in the shell and polluting the shell, thereby reducing the frequency of cleaning, saving time and effort, and being able to regularly clean the U-shaped tube to ensure that the outer wall of the U-shaped tube is clean and the flue gas heat exchange efficiency is ensured; however, when the above-mentioned heat exchanger for a power plant is in use, it is difficult to discharge the water vapor generated during heat conduction inside the heat exchange mechanism, resulting in a large number of water droplets remaining inside the heat exchange mechanism. After long-term use, the water droplets merge to form flowing water, which in turn causes a large amount of water to remain inside the heat exchange mechanism and is difficult to discharge, resulting in low flue gas heat exchange efficiency, affecting the use of existing devices.

[0004] In order to solve the above problems, a heat medium water tube type flue gas heat exchanger is proposed in the present application. Utility Model Content

[0005] In order to solve the problems raised in the above background technology, the utility model provides a heat medium water tube type flue gas heat exchanger, which has the characteristics of avoiding water resource loss and high heat exchange efficiency.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] Heat medium water tube flue gas heat exchanger, including:

[0008] A base, a heat conduction box is fixed on the top of the base, a processing box is connected to one side of the heat conduction box, and an inlet pipe is connected to the side of the processing box opposite to the heat conduction box;

[0009] A heat exchange mechanism, the heat exchange mechanism is located on a side of the heat transfer box relative to the treatment box, and the heat exchange mechanism is used to convert flue gas into heat energy;

[0010] The recovery mechanism includes a water inlet pipe connected to the bottom of the heat conduction box and a water tank arranged at the bottom of the water inlet pipe, a valve body is arranged inside the water inlet pipe, a control rod is fixed on one side of the valve body, a plurality of gear rods are evenly fixed on the outer wall of one end of the control rod, an observation tube is connected to the side of the water inlet pipe relative to the control rod, a limiting mechanism is arranged between the control rod and the base, and activated carbon is arranged inside the treatment box, the purpose of which is to filter the flue gas entering the treatment box to prevent more particulate matter from forming haze.

[0011] As a preferred embodiment of the heat medium water tube type flue gas heat exchanger of the utility model, the limiting mechanism includes a bearing fixed to the outer wall of the control rod and a fixing rod fixed to the bottom of the bearing, and the fixing rod is fixed to the base.

[0012] As a preferred heat medium water tube type flue gas heat exchanger of the utility model, the heat exchange mechanism includes a U-shaped tube arranged inside a heat conduction box and a connecting box connected to one side of the heat conduction box, a cleaning mechanism for cleaning the U-shaped tube is arranged between the heat conduction box and the U-shaped tube, two hoses are arranged inside the connecting box, the two hoses are respectively connected to one side of the U-shaped tube, and a power mechanism for driving the U-shaped tube to move horizontally is arranged on one side of the connecting box.

[0013] As a preferred embodiment of the heat medium water tube type flue gas heat exchanger of the utility model, the cleaning mechanism includes a plurality of cleaning cottons evenly arranged on one side of the interior of the heat conduction box and a U-shaped cotton arranged on a side adjacent to the treatment box, the U-shaped cottons correspond to the U-shaped tube, and the plurality of cleaning cottons are in contact with the U-shaped tube, the U-shaped cottons correspond to the U-shaped part of the U-shaped tube, and are mainly used to clean the U-shaped part to prevent more dirt from adhering to the surface of the U-shaped part and affecting the heat exchange.

[0014] As a preferred embodiment of the heat medium water tube flue gas heat exchanger of the utility model, the power mechanism includes an electric push rod fixed to one side of the connection box and a push block connected to one side of the U-shaped tube, and one side of the push block is connected to the telescopic end of the electric push rod.

[0015] As a preferred embodiment of the heat medium water tube type flue gas heat exchanger of the utility model, a circulation mechanism for discharging water from the water tank is provided on one side of the water tank;

[0016] The circulation mechanism includes a recovery pipe connected to one side of the water tank, an injection pipe connected to the bottom of the hose and a fixed box fixed to one side of the base, a circulation pump is arranged inside the fixed box, the recovery pipe is connected to the water inlet end of the circulation pump, and the water outlet end of the circulation pump is connected to an outlet pipe, a ball valve body is arranged on the top of the outlet pipe, one side of the ball valve body is connected to the injection pipe, and a drain pipe is connected to the side of the ball valve body opposite to the injection pipe.

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

[0018] 1. The utility model sets a recovery mechanism so that the water droplets generated during heat exchange inside the heat transfer box can be effectively collected, thereby solving the problem of low heat exchange efficiency caused by the difficulty in collecting water droplets inside the heat transfer box of the existing heat exchanger, while also avoiding the loss of water resources, making the efficiency of heat exchange of flue gas higher, and greatly improving the practicality of the heat exchanger;

[0019] 2. The utility model sets a circulation mechanism so that the water resources in the water tank can be effectively utilized, preventing water loss and solving the problem of water waste. At the same time, water can be injected into the U-shaped tube to avoid the problem of heat exchange failure caused by insufficient water inside the U-shaped tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0021] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0022] Figure 2 For this utility model Figure 1 A cross-sectional view of

[0023] Figure 3 For this utility model Figure 2 A front view of

[0024] Figure 4 For this utility model Figure 2 Schematic diagram of the structure of the medium circulation mechanism;

[0025] Figure 5 For this utility model Figure 2 Schematic diagram of the structure of the medium water tank;

[0026] In the figure: 1. Base; 2. Valve body; 3. Inlet pipe; 4. Treatment box; 5. Heat transfer box; 6. Connection box; 7. Electric push rod; 8. Fixed box; 9. Circulation pump; 10. Control lever; 11. Cleaning cotton; 12. U-shaped tube; 13. Push block; 14. Hose; 15. Ball valve body; 16. Injection pipe; 17. Outlet pipe; 18. Recovery pipe; 19. Drain pipe; 20. Water tank; 21. Inlet pipe. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] The utility model provides Figure 1 , Figure 2 and Figure 3 The heat medium water tube type flue gas heat exchanger shown comprises: a base 1, a heat conduction box 5 is fixed on the top of the base 1, a treatment box 4 is connected to one side of the heat conduction box 5, and an inlet pipe 3 is connected to the side of the treatment box 4 relative to the heat conduction box 5; a heat exchange mechanism, the heat exchange mechanism is located on the side of the heat conduction box 5 relative to the treatment box 4, the heat exchange mechanism is used to convert flue gas into heat energy, the heat exchange mechanism comprises a U-shaped tube 12 arranged inside the heat conduction box 5 and a connecting box 6 connected to one side of the heat conduction box 5, a cleaning mechanism for cleaning the U-shaped tube 12 is arranged between the heat conduction box 5 and the U-shaped tube 12, two hoses 14 are arranged inside the connecting box 6, the two hoses 14 are respectively connected to one side of the U-shaped tube 12, and a power mechanism for driving the U-shaped tube 12 to move horizontally is arranged on one side of the connecting box 6;

[0029] The cleaning mechanism includes a plurality of cleaning cottons 11 evenly arranged on one side of the interior of the heat conduction box 5 and a U-shaped cotton arranged on one side adjacent to the processing box 4, the U-shaped cotton corresponds to the U-shaped tube 12, and the plurality of cleaning cottons 11 are in contact with the U-shaped tube 12;

[0030] The power mechanism includes an electric push rod 7 fixed to one side of the connection box 6 and a push block 13 connected to one side of the U-shaped tube 12, and one side of the push block 13 is connected to the telescopic end of the electric push rod 7;

[0031] As can be seen from the above, when in use, the flue gas enters the treatment box 4 through the inlet pipe 3, and the treatment box 4 performs a simple treatment on the flue gas before discharging it into the heat transfer box 5. The flue gas enters the heat transfer box 5, so that the U-shaped tube 12 contacts the flue gas. After the hot flue gas contacts the cold U-shaped tube 12, the heat energy of the flue gas is transferred to the U-shaped tube 12, so that the water inside the U-shaped tube 12 is gradually preheated, and then the preheated water is circulated to the place where it is needed through the circulation of the water inside the U-shaped tube 12, thereby forming a heat exchange. When use is completed, the push block 13 is driven by the electric push rod 7 to move horizontally, so that the U-shaped tube 12 moves synchronously. Through the horizontal movement of the U-shaped tube 12, the cleaning cotton 11 rubs and cleans the tube body of the U-shaped tube 12, and the U-shaped cotton cleans the U-shaped part of the U-shaped tube 12, forming a comprehensive cleaning of the U-shaped tube 12, so that the outer surface of the U-shaped tube 12 can be kept clean, and the outer wall of the U-shaped tube 12 is prevented from being contaminated with impurities and affecting the heat exchange.

[0032] refer to Figure 3 and Figure 5 As shown, the recovery mechanism includes a water inlet pipe 21 connected to the bottom of the heat conduction box 5 and a water tank 20 arranged at the bottom of the water inlet pipe 21, a valve body 2 is arranged inside the water inlet pipe 21, a control rod 10 is fixed to one side of the valve body 2, a plurality of gear rods are evenly fixed to the outer wall of one end of the control rod 10, an observation tube is connected to one side of the water inlet pipe 21 relative to the control rod 10, and a limiting mechanism is arranged between the control rod 10 and the base 1;

[0033] Furthermore, the limiting mechanism includes a bearing fixed to the outer wall of the control rod 10 and a fixed rod fixed to the bottom of the bearing, and the fixed rod is fixed to the base 1; based on this, when the control rod 10 rotates, the fixed rod limits the control rod 10 through the bearing, avoiding different forces on the control rod 10 causing misalignment of the valve body 2, thereby ensuring that the valve body 2 can work normally.

[0034] Through the above technical solution:

[0035] When heat exchange is carried out inside the heat transfer box 5, the generated water droplets will gradually form flowing water, which will form a downward flow due to the gravity of the flowing water itself, so that the water inlet pipe 21 can receive it. When water enters the water inlet pipe 21, the amount of water inside the water inlet pipe 21 is observed through the observation tube. When it is relatively large, the control lever 10 is rotated to open the valve body 2, so that the water inside the water inlet pipe 21 enters the water tank 20, thereby collecting the water source. When the water source inside the water inlet pipe 21 is collected, the control lever 10 is rotated in the opposite direction to close the valve body 2. The water droplets inside the heat transfer box 5 are continuously collected by reciprocating. This solves the problem of low heat exchange efficiency due to the difficulty in collecting water droplets inside the heat transfer box of the existing device.

[0036] In addition, refer to Figure 2 , Figure 3 and Figure 4 As shown, a circulation mechanism for discharging water from the water tank 20 is provided on one side of the water tank 20;

[0037] The circulation mechanism includes a recovery pipe 18 connected to one side of the water tank 20, an injection pipe 16 connected to the bottom of the hose 14, and a fixed box 8 fixed to one side of the base 1. A circulation pump 9 is arranged inside the fixed box 8. The recovery pipe 18 is connected to the water inlet end of the circulation pump 9, and the water outlet end of the circulation pump 9 is connected to the outlet pipe 17. A ball valve body 15 is arranged on the top of the outlet pipe 17. One side of the ball valve body 15 is connected to the injection pipe 16, and the side of the ball valve body 15 opposite to the injection pipe 16 is connected to a drain pipe 19.

[0038] Through the above technical solution:

[0039] When the water inside the U-shaped tube 12 is lost due to a large number of heat exchanges, the circulation pump 9 is started to extract the water collected in the water tank 20, and then the ball valve body 15 is adjusted to connect the injection pipe 16 with the outlet pipe 17. The water in the water tank 20 is extracted by the circulation pump 9, so that the water in the outlet pipe 17 can effectively enter the injection pipe 16, so that the water in the injection pipe 16 can be replenished in the U-shaped tube 12, thereby preventing the problem of heat exchange failure due to lack of water in the U-shaped tube 12. In addition, when water is needed, the ball valve body 15 is adjusted to connect the drain pipe 19 with the outlet pipe 17, and then the circulation pump 9 is started to discharge the water inside the water tank 20 through the drain pipe 19, thereby facilitating the user's use of the water source and increasing the sustainable recycling of water resources generated by heat exchange in the utility model.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. Heat medium water tube flue gas heat exchanger, characterized in that: include: A base (1), a heat conduction box (5) is fixed on the top of the base (1), one side of the heat conduction box (5) is connected to a processing box (4), and the side of the processing box (4) opposite to the heat conduction box (5) is connected to an inlet pipe (3); a heat exchange mechanism, the heat exchange mechanism being located on a side of the heat transfer box (5) opposite to the treatment box (4), the heat exchange mechanism being used to convert flue gas into thermal energy; A recovery mechanism, the recovery mechanism comprising a water inlet pipe (21) connected to the bottom of a heat conduction box (5) and a water tank (20) arranged at the bottom of the water inlet pipe (21); a valve body (2) is arranged inside the water inlet pipe (21); a control rod (10) is fixed to one side of the valve body (2); a plurality of gear rods are evenly fixed to the outer wall of one end of the control rod (10); an observation tube is connected to one side of the water inlet pipe (21) relative to the control rod (10); and a limit mechanism is arranged between the control rod (10) and the base (1).

2. The heat medium water tube type flue gas heat exchanger according to claim 1 is characterized in that: The limiting mechanism comprises a bearing fixed to the outer wall of the control rod (10) and a fixing rod fixed to the bottom of the bearing, and the fixing rod is fixed to the base (1).

3. The heat medium water tube type flue gas heat exchanger according to claim 1 is characterized in that: The heat exchange mechanism comprises a U-shaped tube (12) arranged inside a heat conduction box (5) and a connection box (6) connected to one side of the heat conduction box (5); a cleaning mechanism for cleaning the U-shaped tube (12) is arranged between the heat conduction box (5) and the U-shaped tube (12); two hoses (14) are arranged inside the connection box (6); the two hoses (14) are respectively connected to one side of the U-shaped tube (12); and a power mechanism for driving the U-shaped tube (12) to move horizontally is arranged on one side of the connection box (6).

4. The heat medium water tube type flue gas heat exchanger according to claim 3 is characterized in that: The cleaning mechanism comprises a plurality of cleaning cottons (11) evenly arranged on one side of the interior of the heat conduction box (5) and a U-shaped cotton arranged on one side of the interior of the heat conduction box (5), wherein the U-shaped cotton corresponds to the U-shaped tube (12), and the plurality of cleaning cottons (11) are in contact with the U-shaped tube (12).

5. The heat medium water tube type flue gas heat exchanger according to claim 3 is characterized in that: The power mechanism comprises an electric push rod (7) fixed to one side of the connection box (6) and a push block (13) connected to one side of the U-shaped tube (12); one side of the push block (13) is connected to the telescopic end of the electric push rod (7).

6. The heat medium water tube type flue gas heat exchanger according to claim 1 is characterized in that: A circulation mechanism for discharging water from the water tank (20) is provided on one side of the water tank (20); The circulation mechanism comprises a recovery pipe (18) connected to one side of a water tank (20), an injection pipe (16) connected to the bottom of a hose (14), and a fixed box (8) fixed to one side of a base (1); a circulation pump (9) is arranged inside the fixed box (8); the recovery pipe (18) is connected to the water inlet end of the circulation pump (9); and the water outlet end of the circulation pump (9) is connected to a water outlet pipe (17); a ball valve body (15) is arranged at the top of the water outlet pipe (17); one side of the ball valve body (15) is connected to the injection pipe (16), and the side of the ball valve body (15) opposite to the injection pipe (16) is connected to a drainage pipe (19).

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