Waste heat boiler flue gas moisture recovery device

Abstract

The utility model relates to a waste heat boiler flue gas moisture recovery device which comprises a gas-fired boiler, a waste heat boiler and a coil pipe, the coil pipe is arranged in the waste heat boiler, one end of the coil pipe is communicated with a smoke outlet of the waste heat boiler, a flue gas circulation mechanism is arranged on the waste heat boiler, and the two ends of the flue gas circulation mechanism are communicated with the coil pipe. A flue gas conveying mechanism is arranged in the flue gas circulating mechanism, and a gas conveying pipe communicated with the flue gas conveying mechanism is arranged on the flue gas conveying mechanism; a storage box is arranged on one side of the flue gas circulating mechanism, a heat conduction pipe is wound around the section, located in the storage box, of the gas conveying pipe, a cooling piece is arranged on one side of the storage box, a liquid outlet pipe is fixedly connected to the section, located in the storage box, of the gas conveying pipe in a penetrating mode, and a sealing mechanism is arranged on the liquid outlet pipe. And meanwhile, the recovery efficiency of heat in the flue gas can be improved, the recovery effect of waste heat in the flue gas can be improved by recovering moisture in the flue gas and circulating the flue gas, and the moisture in the flue gas can also be recovered.

Description

Technical Field

[0001] The utility model relates to the technical field of waste heat boiler flue gas moisture recovery equipment, in particular to a waste heat boiler flue gas moisture recovery device. Background Art

[0002] The waste heat boiler is a device in a gas turbine cycle unit, which is mainly used to recover the heat of flue gas. By recovering the heat in the flue gas, it is used as domestic water or air heating as needed, so that the waste heat in the flue gas can be effectively recovered, thereby increasing the recovery and utilization of the heat in the flue gas. The existing waste heat boiler is mainly equipped with a spiral tube, one end of which leads to the interface for external flue gas discharge, and the other end runs through the boiler. The spiral tube is used to transmit the flue gas into the boiler, and a liquid inlet is passed through the boiler, and the liquid is transmitted into the boiler through the liquid inlet. When the flue gas enters the spiral tube, the heat in the flue gas is transferred to the temperature of the spiral tube, so that after the spiral tube is heated, the heat is transferred to the liquid entering the boiler, so that the liquid in the boiler is heated. When the liquid is heated to a certain temperature, the liquid is discharged from the discharge pipe running through the waste heat boiler, so that it is discharged to external equipment for utilization, thereby realizing the recovery of waste heat;

[0003] Although this method can recover the waste heat of flue gas, there are still the following problems:

[0004] First, when the flue gas enters the spiral tube, there is a lot of moisture inside it. If the moisture is directly discharged to the outside through the spiral tube, it will cause a great waste of moisture in the flue gas, and then cause poor recycling effect of water resources (the moisture is mainly caused by factors such as moisture in the environment and fuel. When the environment is humid, the moisture inside the flue gas is relatively high);

[0005] Second, during the waste heat recovery process, the flue gas is directly discharged to the outside through the spiral tube, and the waste heat recovery efficiency will change according to the time the flue gas stays in the spiral tube. In the above technology, the flue gas is directly discharged to the outside through the spiral tube, and the corresponding residence time of the flue gas in the spiral tube is relatively short, which will greatly reduce the efficiency of waste heat recovery in the flue gas, thereby causing a significant loss of heat in the flue gas. Summary of the invention

[0006] The purpose of the utility model is to solve the problems in the prior art and to propose a waste heat boiler flue gas moisture recovery device, which can recycle the moisture in the flue gas and increase the recovery efficiency of the heat in the flue gas.

[0007] To achieve the above purpose, the utility model proposes a waste heat boiler flue gas moisture recovery device, comprising: a gas boiler, a waste heat boiler and a coil, wherein the coil is arranged in the gas boiler, and one end of the coil is connected to the exhaust port of the waste heat boiler.

[0008] The waste heat boiler is provided with a flue gas circulation mechanism, and both ends of the flue gas circulation mechanism are connected to the coil;

[0009] A smoke conveying mechanism is arranged in the smoke circulation mechanism, and a gas conveying pipe communicating with the smoke conveying mechanism is arranged on the smoke conveying mechanism;

[0010] A storage box is arranged on one side of the flue gas circulation mechanism, the gas pipe is located in the storage box, and one end of the gas pipe extends outside the storage box, a section of the gas pipe located in the storage box is wrapped with a temperature conducting pipe, a cooling element is arranged on one side of the storage box, both ends of the cooling element are respectively communicated with both ends of the temperature conducting pipe, the cooling element can cool the temperature conducting pipe, a section of the gas pipe located in the storage box is penetrated and fixedly connected with a liquid outlet pipe, a sealing mechanism is arranged on the liquid outlet pipe, and the sealing mechanism can seal the liquid outlet pipe.

[0011] Preferably, the flue gas circulation mechanism includes a circulation box, fan 1 and fan 2. The circulation box is arranged on one side of the waste heat boiler. Fan 1 and fan 2 are fixedly connected in the circulation box. Fan 1 is communicated with the coil through circulation pipe 1, and fan 2 is communicated with the coil through circulation pipe 2.

[0012] Preferably, the smoke conveying mechanism includes a third fan, the third fan is fixedly connected in the circulation box, the gas pipe passes through and is fixedly connected to the third fan, and one end of the gas pipe passes through the storage box.

[0013] Preferably, a control panel is fixedly connected to the waste heat boiler, an end of the coil close to the waste heat boiler is fixedly connected with a solenoid valve 1, which is electrically connected to the control panel, a circulation pipe 1 is fixedly connected with a solenoid valve 2 electrically connected to the control panel, a circulation pipe 2 is fixedly connected with a solenoid valve 3 electrically connected to the control panel, an air pressure sensor is fixedly connected to the coil, which is electrically connected to the control panel, a solenoid valve 4 electrically connected to the control panel is fixedly connected to the gas pipe, and the control panel is electrically connected to fan 3.

[0014] Preferably, the sealing mechanism comprises a sealing plate and a spring, the liquid outlet pipe is penetrated by a liquid outlet, the sealing plate is slidably connected to the liquid outlet pipe, the spring is fixedly connected to the liquid outlet pipe, and one end thereof is fixedly connected to the sealing plate.

[0015] Preferably, a water outlet pipe is fixedly connected through the bottom of the circulation box, a solenoid valve six is ​​fixedly connected to the water outlet pipe, the solenoid valve six is ​​electrically connected to the control panel, and a liquid level sensor one is fixedly connected inside the circulation box, the liquid level sensor one is electrically connected to the control panel.

[0016] Preferably, a drain pipe is fixedly connected through the bottom surface of the storage box, a solenoid valve five is fixedly connected to the drain pipe, the solenoid valve five is electrically connected to the control panel, and a liquid level sensor two is fixedly connected inside the storage box, the liquid level sensor two is electrically connected to the control panel.

[0017] Preferably, one end of the air delivery pipe located in the storage box is arranged in a V shape, and the lowest end of the air delivery pipe is connected to the liquid outlet pipe.

[0018] The beneficial effects of the utility model are as follows: compared with the prior art, the recovery device of the utility model can make the smoke circulate in the coil through the smoke circulation mechanism, so that the time that the smoke stays in the coil is increased, thereby increasing the recovery efficiency of the waste heat in the smoke. At the same time, the cooling element cools the temperature conducting pipe, and the temperature conducting pipe is used to conduct temperature to the gas pipe, so that the gas pipe transfers the temperature to the smoke. The water molecules in the smoke are pre-cooled and condensed, and are discharged into the storage box through the liquid outlet pipe, thereby achieving the recovery of moisture in the smoke. By recovering the moisture in the smoke and circulating the smoke, both the recovery effect of the waste heat in the smoke can be increased and the moisture in the smoke can be recovered.

[0019] The features and advantages of the present invention will be described in detail through embodiments in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the utility model;

[0021] Figure 2 It is a structural schematic diagram of the smoke circulation mechanism of the utility model;

[0022] Figure 3 It is a structural schematic diagram of the sealing mechanism of the utility model.

[0023] In the figure: 1. gas boiler; 2. waste heat boiler; 3. coil; 4. flue gas circulation mechanism; 5. flue gas conveying mechanism; 6. gas transmission pipe; 7. storage box; 8. temperature conducting pipe; 9. cooling element; 10. liquid outlet pipe; 11. sealing mechanism; 12. circulation box; 13. fan one; 14. fan two; 15. fan three; 16. control panel; 17. solenoid valve one; 18. solenoid valve two; 19. solenoid valve three; 20. air pressure sensor; 21. solenoid valve four; 23. sealing plate; 24. spring; 25. liquid outlet; 26. water outlet pipe; 27. solenoid valve six; 28. liquid level sensor one; 29. ​​drain pipe; 30. solenoid valve five; 31. liquid level sensor two; 32. circulation pipe one; 33. circulation pipe two; 34. cooling box; 35. cooler; 36. liquid pump one; 37. liquid pump two. DETAILED DESCRIPTION

[0024] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0025] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0026] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0027] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0028] The seat of the present invention is now further described in detail with reference to the accompanying drawings.

[0029] according to Figures 1 to 3The waste heat boiler 2 flue gas moisture recovery device shown includes a gas boiler 1, a waste heat boiler 2 and a coil 3, wherein the coil 3 is arranged in the waste heat boiler 2 and one end of the coil 3 is connected to the exhaust port of the gas boiler 1. The transmission of the gas boiler 1 can be achieved by connecting the coil 3 to the exhaust port;

[0030] The waste heat boiler 2 is connected with a flue gas circulation mechanism 4, and both ends of the flue gas circulation mechanism 4 are connected with the coil 3, so as to realize the circulation of flue gas in the coil 3, thereby increasing the heat transfer of waste heat in the flue gas to the coil 3, and then transferring the heat from the coil 3 to water, so as to realize the recovery of waste heat and further improve the recovery effect of waste heat;

[0031] A flue gas conveying mechanism 5 is arranged in the flue gas circulation mechanism 4, and a gas pipe 6 communicating with the flue gas conveying mechanism 5 is arranged on the flue gas conveying mechanism 5, and a storage box 7 is arranged on one side of the flue gas circulation mechanism 4, and the gas pipe 6 is located in the storage box 7, and one end of the gas pipe 6 extends to the outside of the storage box 7, and the flue gas conveying mechanism 5 is mainly used to transmit the flue gas in the flue gas circulation mechanism 4 to the conveying pipe, and a section of the gas pipe 6 located in the storage box 7 is wound with a temperature conducting pipe 8, and a cooling member 9 is arranged on one side of the storage box 7, and the two ends of the cooling member 9 are respectively communicated with the two ends of the temperature conducting pipe 8, and the cooling member 9 is mainly used to cool the temperature conducting pipe 8, and the temperature conducting pipe 8 is a copper pipe with a temperature conducting effect, and the cooling member 9 is mainly composed of a cooling box 34, a cooler 35, a water pump 1 and a water pump 2 connected together, wherein the cooling box 34 is arranged on one side of the waste heat boiler 2, and the water pump 1 and the water pump 2 are both arranged in the cooling box 34, the water pump 1 is communicated with the temperature conducting pipe 8, and the temperature conducting pipe 8 is away from One end of the water pump 1 is connected to the cooling box 34, and the cooling water is transmitted by the water pump 1 to enter the temperature conducting pipe 8 to cool the temperature conducting pipe 8. When the temperature conducting pipe 8 returns to the cooling box 34, the cooling water can be recycled. In the cooling process of the temperature conducting pipe 8, the water pump 2 is started, and the water pump 2 is connected to the cooler 35 through a pipeline. When the cooler 35 is connected to the cooling box 34, the water in the cooling box 34 is transmitted by the water pump 2 to enter the cooler 35 through the pipeline for cooling. After the water is cooled, the water enters the cooling box 34 through the pipeline, thereby cooling the water. After the coil 3 is cooled, the coil 3 will conduct the temperature to the flue gas, so that the moisture in the flue gas is pre-cooled and condensed into water, and flows into the liquid outlet pipe 10 connected to the gas supply pipe 6 to realize the discharge of the liquid. The sealing mechanism 11 arranged on the liquid outlet pipe 10 can seal the liquid outlet pipe 10. The coil 3 is made of copper tube and has a good temperature conduction effect.

[0032] To further explain, the circulation parts include a circulation box 12, a fan 13 and a fan 2 14, and both the fan 13 and the fan 2 14 are fixedly connected to the circulation box 12, wherein the fan 13 is connected to the circulation box 12 through a circulation pipe 1 32, and the fan 13 is used to extract the flue gas in the coil 3, and the fan 2 14 is connected to the coil 3 through a circulation pipe 2 33, and is mainly used to circulate the flue gas, and the waste heat in the flue gas can be fully recovered by the circulation method.

[0033] To further explain, the smoke conveying mechanism 5 includes a fan three 15, the fan three 15 is fixedly connected in the circulation box 12, and the air supply pipe 6 passes through and is fixedly connected to the fan three 15, so as to realize the transmission of the smoke.

[0034] Further explanation, the air pressure sensor 20 is fixedly connected to the coil 3. The air pressure sensor 20 is mainly used to sense the air pressure of the coil 3 between the solenoid valve 17 fixedly connected to the coil 3 and the gas boiler 1. When the air pressure of the coil 3 rises to a certain value, the air pressure sensor 20 will sense the signal of the control panel 16 electrically connected to it and fixedly connected to the waste heat boiler 2, and use the control panel 16 to control the solenoid valve 17 electrically connected to it to open, so that the flue gas enters the coil 3. When the flue gas pressure in the coil 3 is relieved to a certain value, the air pressure sensor 20 will transmit a signal to the control panel 16 to close the solenoid valve 17. When the solenoid valve 17 is closed, the solenoid valve 17 fixedly connected to the circulation pipe 32 will be closed. Valve 2 18 and solenoid valve 3 19 fixedly connected to circulation pipe 2 33 are controlled by control panel 16 electrically connected to solenoid valve 1 17 and solenoid valve 2 18 and are in an open state. Fan 1 13 and fan 2 14 are started to circulate the flue gas. When the flue gas circulates for a certain period of time, control panel 16 controls fan 2 14 to close, solenoid valve 3 19 to close, and solenoid valve 2 18 to open. The airflow will enter the smoke conveying mechanism 5 and will enter the gas supply pipe 6 driven by fan 3 15 to realize the transmission of airflow. When the smoke is in the circulation chamber, control panel 16 controls solenoid valve 4 21 electrically connected to it and fixedly connected to the gas supply pipe 6 to close, and the smoke is in a circulating state.

[0035] To further explain, the sealing mechanism 11 includes a sealing plate 23 and a spring 24. The liquid outlet pipe 10 is penetrated by a liquid outlet 25, and the sealing plate 23 is slidably connected to the liquid outlet pipe 10. The spring 24 is fixedly connected to the liquid outlet pipe 10, and one end thereof is fixedly connected to the sealing plate 23. When water condensed in the flue gas enters the liquid outlet pipe 10 and accumulates, the water will apply weight to the sealing tube plate. When the weight of the sealing plate 23 reaches a certain value, the spring 24 will expand and contract to move the sealing plate 23 to a position below the liquid outlet 25. At this time, the water will be discharged to the outside through the liquid outlet 25, thereby realizing the discharge of water.

[0036] To further explain, a water outlet pipe 26 is fixedly connected through the bottom of the circulation box 12, and a solenoid valve 6 27 is fixedly connected to the water outlet pipe 26. The solenoid valve 6 27 is electrically connected to the control panel 16. A liquid level sensor 28 is fixedly connected in the circulation box 12, and the liquid level sensor 28 is electrically connected to the control panel 16. The liquid level in the circulation box 12 can be sensed by the liquid level sensor 28 and the signal is transmitted to the control panel 16. The control panel 16 can control the solenoid valve 17 to open, thereby realizing the discharge of water in the circulation box 12.

[0037] To further explain, a drain pipe 29 is fixedly connected to the bottom surface of the storage box 7, and a solenoid valve 5 30 is fixedly connected to the drain pipe 29, and the solenoid valve 5 30 is electrically connected to the control panel 16. A liquid level sensor 2 31 is fixedly connected to the storage box 7, and the liquid level sensor 2 31 is electrically connected to the control panel 16. Therefore, when the water level in the storage box 7 rises to a certain value, the liquid level sensor 2 31 will sense the rise in the liquid level and transmit a signal to the control panel 16. The control panel 16 controls the solenoid valve 5 30 to open, thereby realizing the discharge of water in the storage box 7.

[0038] To further explain, one end of the gas delivery pipe 6 located in the storage box 7 is arranged in a V shape, and the lowest end of the gas delivery pipe 6 is connected to the liquid outlet pipe 10, so that the flow can be diverted.

[0039] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention falls within the protection scope of the present invention.

Claims

1. Waste heat boiler flue gas moisture recovery device, including: A gas boiler (1), a waste heat boiler (2) and a coil (3), wherein the coil (3) is arranged in the waste heat boiler (2), and one end of the coil (3) is connected to the smoke exhaust port of the gas boiler (1), characterized in that: The waste heat boiler (2) is provided with a flue gas circulation mechanism (4), and both ends of the flue gas circulation mechanism (4) are in communication with the coil (3); A smoke conveying mechanism (5) is arranged inside the smoke circulation mechanism (4), and a gas conveying pipe (6) communicating with the smoke conveying mechanism (5) is arranged on the smoke conveying mechanism (5); A storage box (7) is provided on one side of the flue gas circulation mechanism (4); the gas supply pipe (6) is located in the storage box (7), and one end of the gas supply pipe (6) extends outside the storage box (7); a section of the gas supply pipe (6) located in the storage box (7) is wound with a temperature conducting pipe (8); a cooling element (9) is provided on one side of the storage box (7); two ends of the cooling element (9) are respectively connected to two ends of the temperature conducting pipe (8); the cooling element (9) can cool the temperature conducting pipe (8); a section of the gas supply pipe (6) located in the storage box (7) is penetrated and fixedly connected with a liquid outlet pipe (10); a sealing mechanism (11) is provided on the liquid outlet pipe (10); the sealing mechanism (11) can seal the liquid outlet pipe (10).

2. The waste heat boiler flue gas moisture recovery device according to claim 1 is characterized in that: The flue gas circulation mechanism (4) comprises a circulation box (12), a fan 1 (13) and a fan 2 (14); the circulation box (12) is arranged on one side of the waste heat boiler (2); the fan 1 (13) and the fan 2 (14) are both fixedly connected to the circulation box (12); the fan 1 (13) and the coil (3) are communicated through a circulation pipe 1 (32); and the fan 2 (14) and the coil (3) are communicated through a circulation pipe 2 (33).

3. The waste heat boiler flue gas moisture recovery device according to claim 2 is characterized in that: The smoke conveying mechanism (5) comprises a fan three (15), the fan three (15) is fixedly connected in the circulation box (12), the gas delivery pipe (6) passes through and is fixedly connected to the fan three (15), and one end of the gas delivery pipe (6) passes through the storage box (7).

4. The waste heat boiler flue gas moisture recovery device according to claim 3 is characterized in that: The waste heat boiler (2) is fixedly connected to a control panel (16); an end of the coil (3) close to the waste heat boiler (2) is fixedly connected to a solenoid valve 1 (17), and the solenoid valve 1 (17) is electrically connected to the control panel (16); the circulation pipe 1 (32) is fixedly connected to a solenoid valve 2 (18) electrically connected to the control panel (16); the circulation pipe 2 (33) is fixedly connected to a solenoid valve 3 (19) electrically connected to the control panel (16); the coil (3) is fixedly connected to an air pressure sensor (20), and the air pressure sensor (20) is electrically connected to the control panel (16); the air supply pipe (6) is fixedly connected to a solenoid valve 4 (21) electrically connected to the control panel (16); and the control panel (16) is electrically connected to a fan 3 (15).

5. The waste heat boiler flue gas moisture recovery device according to claim 1 is characterized in that: The sealing mechanism (11) comprises a sealing plate (23) and a spring (24); a liquid outlet (25) passes through the liquid outlet pipe (10); the sealing plate (23) is slidably connected to the liquid outlet pipe (10); the spring (24) is fixedly connected to the liquid outlet pipe (10), and one end of the spring (24) is fixedly connected to the sealing plate (23).

6. The waste heat boiler flue gas moisture recovery device according to claim 3 is characterized in that: A water outlet pipe (26) is fixedly connected to the bottom of the circulation box (12), and a solenoid valve six (27) is fixedly connected to the water outlet pipe (26). The solenoid valve six (27) is electrically connected to the control panel (16). A liquid level sensor one (28) is fixedly connected inside the circulation box (12), and the liquid level sensor one (28) is electrically connected to the control panel (16).

7. The waste heat boiler flue gas moisture recovery device according to claim 3 is characterized in that: A liquid discharge pipe (29) is fixedly connected to the bottom surface of the storage box (7), and a solenoid valve (5) (30) is fixedly connected to the liquid discharge pipe (29). The solenoid valve (5) (30) is electrically connected to the control panel (16). A liquid level sensor (2) (31) is fixedly connected inside the storage box (7), and the liquid level sensor (2) (31) is electrically connected to the control panel (16).

8. The waste heat boiler flue gas moisture recovery device according to claim 1 is characterized in that: One end of the air delivery pipe (6) located in the storage box (7) is arranged in a V shape, and the lowest end of the air delivery pipe (6) is in communication with the liquid outlet pipe (10).

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