Condensate water separation device for flue gas recirculation pipeline

Abstract

The utility model discloses a condensate water separation device for a flue gas recirculation pipeline, which comprises a barrel with an open top, a top cover is connected to a top flange of the barrel, a liquid inlet pipe and a liquid outlet pipe are arranged on the outer wall of the barrel, and a water storage tank is connected to a bottom flange of the barrel; when the flue gas heat exchanger is used, recirculated flue gas enters the heat exchange coil pipe through the gas inlet pipe so as to exchange heat with cooling liquid in the barrel body, condensate water in the stroke in the heat exchange coil pipe is driven by the flue gas to quickly flow along the heat exchange coil pipe and is discharged into the water storage tank along with the flue gas, and then the flue gas is discharged through the gas outlet pipe. By arranging the liquid level relay and the three water level probes, opening and closing of the electromagnetic valve can be automatically controlled according to liquid level changes in the water storage tank, so that the condensate water in the water storage tank is discharged, the liquid level of the condensate water in the water storage tank is kept within a certain range, the overall structure is simple, operation is convenient, and practicability is high. The flue gas and condensate water can be effectively separated, and the use effect is good.

Description

Technical Field

[0001] The utility model relates to a condensed water separation device, in particular to a flue gas recirculation pipeline condensed water separation device. Background Art

[0002] The operating flue gas of the boiler contains a large amount of thermal energy. Flue gas recirculation utilizes the high temperature of the flue gas in the boiler and relies on water cooling and flue gas waste heat exchange to recover a certain proportion of the thermal energy in the flue gas, mix it with fresh air, and enter the burner to repeatedly participate in combustion to improve the combustion efficiency of the boiler. This technology can improve the thermal efficiency of the boiler and the power generation capacity of the boiler. Flue gas recirculation can reduce the amount of fuel required for the boiler, thereby reducing energy consumption, and plays an important role in protecting energy and reducing energy waste.

[0003] The recycled flue gas is usually mixed with a lot of water vapor. During water-cooled heat exchange, a lot of condensed water will be formed in the heat exchange pipe, which can easily affect the normal circulation of the flue gas in the heat exchange pipe. For this reason, we propose a flue gas recirculation pipe condensed water separation device. Utility Model Content

[0004] The purpose of the utility model is to provide a condensate separation device for a flue gas recirculation pipeline to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A condensate separation device for a flue gas recirculation pipeline comprises a cylinder with an open top, the top flange of the cylinder is connected to a top cover, the outer wall of the cylinder is provided with a liquid inlet pipe and a liquid outlet pipe, the bottom flange of the cylinder is connected to a water storage tank, the outer wall of the cylinder is fixedly provided with an air inlet pipe near the top, a heat exchange coil is provided in the cylinder, the air inlet end of the heat exchange coil is connected with the air inlet pipe, the air outlet end of the heat exchange coil passes through the bottom of the cylinder and is located in the water storage tank, the outer wall of the water storage tank is provided with an air outlet pipe near the top, a drain pipe is provided at the bottom of the water storage tank, a solenoid valve is installed on the drain pipe, a liquid level relay is fixedly installed on the outer wall of the water storage tank, three water level probes for the liquid level relay are provided in the water storage tank, and the solenoid valve and the three water level probes are electrically connected to the liquid level relay.

[0007] As a further solution of the utility model: the three water level probes include a first liquid level probe, a second liquid level probe and a third liquid level probe, the installation heights of which increase successively.

[0008] As a further solution of the utility model: three sleeves are fixedly inserted into the bottom of the water tank, vertical pipes are slidably inserted into the sleeves, the sleeves are sealed and connected to the vertical pipes, and a locking mechanism for positioning the vertical pipes is installed on the sleeves. The first liquid level probe, the second liquid level probe and the third liquid level probe are fixedly and sealedly connected to the top ends of the corresponding vertical pipes, and the first liquid level probe, the second liquid level probe and the third liquid level probe are electrically connected to the liquid level relay through wires passing through the vertical pipes.

[0009] As a further solution of the utility model: a plurality of sealing rings are embedded in the sleeve, and the inner walls of the sealing rings are in contact with the outer wall of the vertical pipe.

[0010] As a further solution of the utility model: the outer wall of the sleeve is fixedly connected with a nut, the nut is matched with a hand bolt, a rubber block is arranged between the threaded end of the hand bolt and the outer wall of the vertical pipe, and a gasket is arranged between the hand bolt and the rubber block.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] When the utility model is in use, the recirculated flue gas enters the heat exchange coil from the air inlet pipe to exchange heat with the coolant in the cylinder body. The condensed water in the heat exchange coil will flow rapidly along the heat exchange coil driven by the flue gas, and be discharged into the water storage tank together with the flue gas. Thereafter, the flue gas will be discharged from the air outlet pipe, while the condensed water will gather in the water storage tank. Through the setting of the liquid level relay and three water level probes, the opening and closing of the solenoid valve can be automatically controlled according to the change of the liquid level in the water storage tank, so as to discharge the condensed water in the water storage tank so that the liquid level of the condensed water in the water storage tank is maintained within a certain range. The overall structure is simple, and the effective separation of the flue gas and the condensed water can be achieved, and the use effect is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The figure is a schematic diagram of the structure of a condensate separation device for a flue gas recirculation pipeline.

[0014] Figure 2 for Figure 1 A partial enlarged view of .

[0015] Figure 3 The figure is a schematic diagram of the structure of a locking mechanism in a condensate separation device for a flue gas recirculation pipeline.

[0016] Among them, the cylinder 1, the top cover 2, the liquid inlet pipe 3, the liquid outlet pipe 4, the air inlet pipe 5, the heat exchange coil 6, the water storage tank 7, the air outlet pipe 8, the drain pipe 9, the solenoid valve 10, the liquid level relay 11, the sleeve 12, the vertical pipe 13, the nut 14, the rubber block 15, the gasket 16, the hand-tightening bolt 17, the sealing ring 18, the first liquid level probe 19, the second liquid level probe 20, the third liquid level probe 21, and the wire 22. DETAILED DESCRIPTION

[0017] 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 will be further described in detail in conjunction with the embodiments below. 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.

[0018] 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.

[0019] It should be understood that the terms "upper", "lower", "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 invention 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 in the specification, and therefore cannot be understood as a limitation on the present invention.

[0020] In addition, the terms "first", "second", and "third" 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.

[0021] See also Figures 1 to 3In an embodiment of the utility model, a condensate separation device for a flue gas recirculation pipeline comprises a cylinder 1 with an open top, a top cover 2 is connected to the top flange of the cylinder 1, a liquid inlet pipe 3 and a liquid outlet pipe 4 are arranged on the outer wall of the cylinder 1, a water storage tank 7 is connected to the bottom flange of the cylinder 1, an air inlet pipe 5 is fixedly penetrated near the top of the outer wall of the cylinder 1, a heat exchange coil 6 is arranged in the cylinder 1, an air inlet end of the heat exchange coil 6 is communicated with the air inlet pipe 5, an air outlet end of the heat exchange coil 6 passes through the bottom of the cylinder 1 and is located in the water storage tank 7, An air outlet pipe 8 is penetrated through the outer wall near the top, a drain pipe 9 is arranged at the bottom of the water storage tank 7, a solenoid valve 10 is installed on the drain pipe 9, a liquid level relay 11 is fixedly installed on the outer wall of the water storage tank 7, three water level probes for the liquid level relay 11 are arranged in the water storage tank 7, the solenoid valve 10 and the three water level probes are electrically connected to the liquid level relay 11, specifically, the model of the liquid level relay 11 is the HHY7P liquid level relay sold by Xiamen Depin Electric Co., Ltd., and the three water level probes are all stainless steel probes compatible with the liquid level relay.

[0022] The utility model adopts the above scheme. When in use, the coolant is introduced into the cylinder 1 through the liquid inlet pipe 3, and the coolant is discharged through the liquid outlet pipe 4. The recycled flue gas enters the heat exchange coil 6 through the air inlet pipe 5 to exchange heat with the coolant in the cylinder 1. The condensed water in the heat exchange coil 6 will flow rapidly along the heat exchange coil 6 driven by the flue gas, and be discharged into the water storage tank 7 together with the flue gas. Thereafter, the flue gas will be discharged through the air outlet pipe 8, and the condensed water will gather in the water storage tank 7. Through the setting of the liquid level relay 11 and the three water level probes, the opening and closing of the solenoid valve 10 can be automatically controlled according to the liquid level change in the water storage tank 7, so as to discharge the condensed water in the water storage tank 7 so that the condensed water level in the water storage tank 7 is maintained within a certain range. The overall structure is simple, and the effective separation of the flue gas and the condensed water can be achieved, with good use effect.

[0023] Specific combination Figure 1 and Figure 2 In one embodiment of the present utility model, the three water level probes include a first liquid level probe 19, a second liquid level probe 20 and a third liquid level probe 21, the installation heights of which increase in sequence.

[0024] Specifically, through the arrangement of the first liquid level probe 19, the second liquid level probe 20, the third liquid level probe 21 and the liquid level relay 11, when the liquid level in the water storage tank 7 is lower than the first liquid level probe 19, the solenoid valve 10 remains in a closed state. When the liquid level in the water storage tank 7 gradually rises to be higher than the second liquid level probe 20, the solenoid valve 10 still remains in a closed state. When the liquid level in the water storage tank 7 continues to rise and contacts the third liquid level probe 21, the liquid level relay 11 is triggered to open the solenoid valve 10 to discharge the water in the water storage tank 7 from the drain pipe 9. At this time, the water storage tank 7 is The liquid level in the tank 7 gradually decreases. When the liquid level in the water tank 7 is lower than the second liquid level probe 20, the liquid level relay 11 is triggered again and the solenoid valve 10 is closed, so that the liquid level in the water tank 7 gradually rises again until the liquid level rises to be released from the third liquid level probe 21. The liquid level relay 11 opens the solenoid valve 10 again to discharge the condensed water. The cycle is repeated to keep the condensed water level in the water tank 7 within a certain range at all times, thereby preventing the smoke from being discharged from the drain pipe 9 along with the condensed water when the condensed water in the water tank 7 is drained. The use effect is good.

[0025] Specific combination Figure 2 and Figure 3 On the basis of the previous embodiment, further, three sleeves 12 are fixedly penetrated at the bottom of the water storage tank 7, vertical pipes 13 are slidably penetrated in the sleeves 12, the sleeves 12 and the vertical pipes 13 are sealed and connected, and a locking mechanism for positioning the vertical pipes 13 is installed on the sleeves 12. The first liquid level probe 19, the second liquid level probe 20 and the third liquid level probe 21 are fixedly and sealedly connected to the top of the corresponding vertical pipes 13, and the first liquid level probe 19, the second liquid level probe 20 and the third liquid level probe 21 are electrically connected to the liquid level relay 11 through the wire 22 passing through the vertical pipe 13.

[0026] Through the cooperation between the sleeve 12 and the vertical pipe 13, the layout height of each water level probe in the water tank 7 can be adjusted by simply adjusting the length of the vertical pipe 13 inserted into the water tank 7 on the sleeve 12, so as to control the height of the condensed water level retained in the water tank 7, which is simple and convenient to operate.

[0027] Specific combination Figure 3 On the basis of the previous embodiment, further, a plurality of sealing rings 18 are embedded in the sleeve 12, and the inner walls of the sealing rings 18 are in contact with the outer walls of the vertical pipe 13. By setting the sealing rings 18, the sealing between the sleeve 12 and the vertical pipe 13 can be ensured.

[0028] Specific combination Figure 3On the basis of the previous embodiment, further, the outer wall of the sleeve 12 is fixedly connected with a nut 14, and the nut 14 is matched with a hand bolt 17, a rubber block 15 is arranged between the threaded end of the hand bolt 17 and the outer wall of the vertical pipe 13, and a gasket 16 is arranged between the hand bolt 17 and the rubber block 15.

[0029] By tightening the hand screw 17 on the nut 14 , the rubber block 15 can be pressed against the vertical pipe 13 to fix the vertical pipe 13 in the sleeve 12 . The operation is simple and convenient, and the outer wall of the vertical pipe 13 will not be damaged.

[0030] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A flue gas recirculation pipeline condensate separation device, characterized in that: The invention comprises a cylinder (1) with an open top, the top flange of the cylinder (1) being connected to a top cover (2), the outer wall of the cylinder (1) being provided with a liquid inlet pipe (3) and a liquid outlet pipe (4), the bottom flange of the cylinder (1) being connected to a water storage tank (7), an air inlet pipe (5) being fixedly penetrated through the outer wall of the cylinder (1) near the top, a heat exchange coil (6) being arranged inside the cylinder (1), the air inlet end of the heat exchange coil (6) being connected to the air inlet pipe (5), and the air outlet end of the heat exchange coil (6) passing through the cylinder (1). 1) is located in a water storage tank (7), an air outlet pipe (8) is provided on the outer wall of the water storage tank (7) near the top, a drainage pipe (9) is provided at the bottom of the water storage tank (7), an electromagnetic valve (10) is installed on the drainage pipe (9), a liquid level relay (11) is fixedly installed on the outer wall of the water storage tank (7), three water level probes for the liquid level relay (11) are provided in the water storage tank (7), and the electromagnetic valve (10) and the three water level probes are electrically connected to the liquid level relay (11).

2. The condensate separation device for flue gas recirculation pipeline according to claim 1, characterized in that: The three water level probes include a first liquid level probe (19), a second liquid level probe (20) and a third liquid level probe (21), the installation heights of which increase in sequence.

3. The condensate separation device for flue gas recirculation pipeline according to claim 2 is characterized in that: Three sleeves (12) are fixedly inserted into the bottom of the water storage tank (7), and vertical pipes (13) are slidably inserted into the sleeves (12). The sleeves (12) and the vertical pipes (13) are sealed and connected. A locking mechanism for positioning the vertical pipes (13) is installed on the sleeves (12). The first liquid level probe (19), the second liquid level probe (20) and the third liquid level probe (21) are fixedly sealed and connected to the top of the corresponding vertical pipes (13). The first liquid level probe (19), the second liquid level probe (20) and the third liquid level probe (21) are electrically connected to the liquid level relay (11) through a wire (22) inserted from the vertical pipe (13).

4. The condensate separation device for flue gas recirculation pipeline according to claim 3 is characterized in that: A plurality of sealing rings (18) are embedded in the sleeve (12), and the inner walls of the sealing rings (18) are in contact with the outer wall of the vertical pipe (13).

5. The condensate separation device for flue gas recirculation pipeline according to claim 4, characterized in that: The outer wall of the sleeve (12) is fixedly connected to a nut (14), and a hand-tightening bolt (17) is matched and connected to the nut (14). A rubber block (15) is arranged between the threaded end of the hand-tightening bolt (17) and the outer wall of the vertical pipe (13), and a gasket (16) is arranged between the hand-tightening bolt (17) and the rubber block (15).

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