Hot water flash deaerator

Abstract

The utility model belongs to the field of hot water flash deoxygenization, and particularly relates to a hot water flash deoxygenization device which comprises a body. The top of the body is fixedly connected with a flash evaporator; the top of the body is fixedly connected with a second collecting box; the top of the body is communicated with a rotating film deoxidizing head; the top of the flash evaporator is communicated with a first air outlet pipe; the end part of the first air outlet pipe is communicated with a first collecting box; the middle part of the first collecting box is communicated with a return pipe; the bottom of the first collecting box is communicated with a downpipe; the downpipe is communicated with the second collecting box; the end part of the return pipe is communicated with a heating pipe; the end part of the heating pipe is communicated with a second air outlet pipe; and the liquefied part of the water vapor separated by the flash evaporator enters the second collecting box through the downpipe in the process of reaching the rotating film deoxygenization head, so that water drops entering the rotating film deoxygenization head are reduced, the influence of the water drops on the rotating film deoxygenization head is reduced, and the stability of the rotating film deoxygenization head during working is improved.

Description

Technical Field

[0001] The utility model relates to the field of hot water flash deaeration, and specifically relates to a hot water flash deaerator. Background Technique

[0002] The flash thermal deaerator is a device that uses heat energy to remove oxygen from water and is widely used in industrial and civil fields. It uses the waste heat of the boiler or other industrial waste heat as a heat source to heat the water to the boiling state, generating a large amount of water vapor. When the water vapor contacts the water, it will carry the oxygen away from the water and discharge it through the top exhaust port. The deaerated water is discharged through the bottom drain port and can be used in fields such as boiler feed water and industrial cooling water.

[0003] The existing flash thermal deaerator separates hot steam from hot water through a flash evaporator during operation. These hot steams provide heat sources for the rotating film deaeration head, but the hot steam will liquefy due to heat loss during the transmission process. The liquefied water droplets will damage the equipment after entering the rotating film deaeration head.

[0004] Therefore, a hot water flash deaerator is proposed for the above problems. Content of the Utility Model

[0005] In order to make up for the deficiencies of the prior art and solve at least one of the technical problems proposed in the background technique.

[0006] The technical solution adopted by the utility model to solve its technical problems is as follows: A hot water flash deaerator of the utility model includes a main body; a flash evaporator is fixedly connected to the top of the main body; a second collection box is fixedly connected to the top of the main body; a rotating film deaeration head is communicated with the top of the main body; a water injection port is communicated with the middle of the flash evaporator; a first air outlet pipe is communicated with the top of the flash evaporator; the end of the first air outlet pipe is communicated with a first collection box; a return pipe is communicated with the middle of the first collection box; a downcomer is communicated with the bottom of the first collection box; the downcomer is in a communication relationship with the second collection box; the end of the return pipe is communicated with a heating pipe; the heating pipe is located inside the flash evaporator; the end of the heating pipe is communicated with a second air outlet pipe; the second air outlet pipe is in a communication relationship with the rotating film deaeration head; the liquefied part of the water vapor separated by the flash evaporator during the process of reaching the rotating film deaeration head will enter the second collection box through the downcomer, realizing the recovery of the liquid generated during the operation of the equipment, improving the utilization rate of hot water by the equipment, reducing the water droplets entering the inside of the rotating film deaeration head at the same time, reducing the influence of the water droplets on the rotating film deaeration head, improving the stability of the rotating film deaeration head during operation, and extending the service life of the equipment.

[0007] Preferably, a plurality of first scraping plates are fixedly connected to the middle of the first air outlet pipe; a heat preservation cloth is fixedly connected between adjacent first scraping plates; by arranging the heat preservation cloth, moving the first scraping plate can drive the heat preservation cloth to stretch, and when the heat preservation cloth stretches, it will have a heat preservation effect on the first air outlet pipe, reducing the heat lost by water vapor during transportation, improving the energy utilization rate of the device, and by arranging the first scraping plate, the first scraping plate will rub against the device during movement, reducing the impurities on the surface of the device and improving the convenience of device cleaning.

[0008] Preferably, an oil bag is fixedly connected to the inner side wall of the heat preservation cloth; a plurality of round holes are formed in the middle of the oil bag; through the cooperation of the oil bag and the round holes, when the first scraping plate moves, the anti-rust paint in the oil bag will flow to the surface of the first air outlet pipe, reducing impurities such as rust on the surface of the first air outlet pipe and extending the service life of the device.

[0009] Preferably, a motor is fixedly connected to the top of the main body; a rotating shaft is fixedly connected to the output end of the motor; the rotating shaft is in shaft seal connection with the first collection box; a plurality of first connecting rods are fixedly connected to the middle of the rotating shaft; the first connecting rods are located inside the first collection box; a second scraping plate is fixedly connected to the bottom of the first connecting rod; when the motor is started, the rotating shaft will drive the second scraping plate to rotate and make the water droplets at the bottom of the first collection box enter the inside of the downpipe, realizing the guidance of the water droplet flow direction in the first collection box by the device, reducing the accumulation of water droplets in the collection box, and enhancing the collection effect of the second collection box on water droplets.

[0010] Preferably, a first magnet is fixedly connected to the end of the first connecting rod; a plurality of fixing plates are fixedly connected to the inner side wall of the first collection box; the fixing plates are arranged corresponding to the first magnet; a second connecting rod is fixedly connected between adjacent fixing plates; an iron ball is rotatably connected to the middle of the second connecting rod; when the first connecting rod rotates, it will drive the first magnet to rotate, and the magnetic force exerted by the first magnet on the iron ball when it rotates will make the iron ball continuously strike the inner side wall of the first collection box, increasing the falling speed of the water droplets on the side wall of the first collection box and shortening the time for the water droplets to enter the downpipe.

[0011] Preferably, a plurality of guiding plates are fixedly connected to the middle inner side wall of the first collection box; a water dripping port is formed at the bottom of the guiding plate; through the cooperation of the guiding plate and the water dripping port, the water droplets on the inner side wall of the first collection box will fall to the bottom of the first collection box along the surface of the guiding plate, optimizing the distribution of the water droplets in the first collection box, reducing the water droplets accumulated in the inner corners of the first collection box, and enhancing the guiding effect of the second scraping plate on the water droplets.

[0012] Preferably, a plurality of bristles are fixedly connected to the bottom of the second scraping plate; by arranging the bristles, when the second scraping plate rotates, the bristles will come into contact with the water droplets, increasing the contact area between the device and the water droplets, enhancing the adsorption and guiding effect of the device on the water droplets, and shortening the time required for the water droplets to enter the downpipe.

[0013] The beneficial effects of the present utility model are as follows:

[0014] 1. For the hot water flash steam deaerator of the present utility model, a part of the water vapor separated by the flash evaporator that liquefies during the process of reaching the rotary film deaerator head will enter the second collection box through the downcomer, realizing the recovery of the liquid generated during the operation of the device, improving the utilization rate of hot water by the device, reducing the water droplets entering the interior of the rotary film deaerator head at the same time, reducing the impact of the water droplets on the rotary film deaerator head, improving the stability of the rotary film deaerator head during operation, and extending the service life of the device.

[0015] 2. For the hot water flash steam deaerator of the present utility model, by setting the heat preservation cloth, moving the first scraper can drive the heat preservation cloth to stretch, and the heat preservation cloth will have a heat preservation effect on the first air outlet pipe when stretching, reducing the heat loss of the water vapor during transportation, improving the energy utilization rate of the device. By setting the first scraper, the first scraper will rub against the device during movement, reducing the impurities on the surface of the device and improving the convenience of device cleaning. Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 is the main schematic diagram of the present utility model;

[0018] Figure 2 is the structural schematic diagram of the heating pipe in the present utility model;

[0019] Figure 3 is the structural schematic diagram of the heat preservation cloth in the present utility model;

[0020] Figure 4 is the structural schematic diagram of the second scraper in the present utility model;

[0021] Figure 5 is the structural schematic diagram of the iron ball in the present utility model.

[0022] In the figure: 1. Body; 102. Flash evaporator; 103. Water injection port; 104. First gas outlet pipe; 105. First collection box; 106. Return pipe; 107. Heating pipe; 108. Second gas outlet pipe; 109. Rotary film deaerator head; 110. Downcomer; 111. Second collection box; 2. First scraper; 22. Heat preservation cloth; 3. Oil bag; 32. Round hole; 4. Motor; 42. Rotating shaft; 43. First connecting rod; 44. Second scraper; 5. First magnet; 52. Fixed plate; 53. Second connecting rod; 54. Iron ball; 6. Guide plate; 62. Water dripping port; 7. Brush hair. Specific embodiments

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0024] The following gives specific embodiments.

[0025] Please refer to Figure 1 and Figure 2As shown in the figure, a kind of hot water flash steam deaerator according to an embodiment of the present utility model includes a main body 1; a flash evaporator 102 is fixedly connected to the top of the main body 1; a second collection box 111 is fixedly connected to the top of the main body 1; a film spinning deaerator head 109 is communicated with the top of the main body 1; a water injection port 103 is communicated with the middle of the flash evaporator 102; a first gas outlet pipe 104 is communicated with the top of the flash evaporator 102; a first collection box 105 is communicated with the end of the first gas outlet pipe 104; a return pipe 106 is communicated with the middle of the first collection box 105; a downcomer 110 is communicated with the bottom of the first collection box 105; the downcomer 110 is in a communicating relationship with the second collection box 111; a heating pipe 107 is communicated with the end of the return pipe 106; the heating pipe 107 is located inside the flash evaporator 102; a second gas outlet pipe 108 is communicated with the end of the heating pipe 107; the second gas outlet pipe 108 is in a communicating relationship with the film spinning deaerator head 109; during operation, high-temperature and high-pressure water passing through the waste heat section of the boiler is injected into the flash evaporator 102 through the water injection port 103. The flash evaporator 102 flashes the hot water and turns part of the hot water into low-pressure saturated water vapor. After this part of the water vapor enters the first gas outlet pipe 104, it will reach the first collection box 105. At this time, part of the water vapor reaching the first collection box 105 will liquefy into water droplets. The water droplets will gather at the bottom of the first collection box 105 and flow into the second collection box 111 through the downcomer 110. The remaining water vapor will enter the heating pipe 107 through the return pipe 106, be heated again inside the heating pipe 107, and then the water vapor will enter the film spinning deaerator head 109 through the second gas outlet pipe 108 to provide heat for the film spinning deaerator head 109, driving the film spinning deaerator head 109 to deaerate the condensed water. After the film spinning deaerator head 109 finishes deaeration, the qualified deaerated water will enter the inside of the main body 1; the part of the water vapor liquefied during the process of the water vapor separated by the flash evaporator 102 reaching the film spinning deaerator head 109 will enter the second collection box 111 through the downcomer 110, realizing the recovery of the liquid generated during the operation of the equipment, improving the utilization rate of hot water by the equipment, reducing the water droplets entering the film spinning deaerator head 109 at the same time, reducing the influence of the water droplets on the film spinning deaerator head 109, improving the stability of the film spinning deaerator head 109 during operation, and extending the service life of the equipment.

[0026] Please refer to Figure 2 and Figure 3As shown, a plurality of first scraping plates 2 are fixedly connected to the middle of the first air outlet pipe 104; a heat preservation cloth 22 is fixedly connected between adjacent first scraping plates 2; during operation, the heat preservation cloth 22 can be stretched by pulling the first scraping plate 2, increasing the coverage area of the heat preservation cloth 22 on the first air outlet pipe 104, improving the heat preservation effect on water vapor. At the same time, the first scraping plate 2 will rub against the first air outlet pipe 104 during movement, reducing impurities on the surface of the first air outlet pipe 104; by setting the heat preservation cloth 22, moving the first scraping plate 2 can drive the heat preservation cloth 22 to stretch, and the heat preservation cloth 22 will have a heat preservation effect on the first air outlet pipe 104 when stretching, reducing the heat loss of water vapor during transportation and improving the energy utilization rate of the device. By setting the first scraping plate 2, the first scraping plate 2 will rub against the device during movement, reducing impurities on the surface of the device and improving the convenience of device cleaning.

[0027] Please refer to Figure 3 As shown, an oil bag 3 is fixedly connected to the inner side wall of the heat preservation cloth 22; a plurality of round holes 32 are formed in the middle of the oil bag 3; rust preventive paint is injected into the oil bag 3. During the movement of the first scraping plate 2, the oil bag 3 will be squeezed, and the rust preventive paint inside the oil bag 3 will flow to the surface of the first air outlet pipe 104 through the round holes 32, increasing the water resistance of the first air outlet pipe 104; through the cooperation of the oil bag 3 and the round holes 32, when the first scraping plate 2 moves, the rust preventive paint in the oil bag 3 will flow to the surface of the first air outlet pipe 104, reducing impurities such as rust on the surface of the first air outlet pipe 104 and extending the service life of the device.

[0028] Please refer to Figure 2 and Figure 4 As shown, a motor 4 is fixedly connected to the top of the body 1; the output end of the motor 4 is fixedly connected with a rotating shaft 42; the rotating shaft 42 is connected to the first collection box 105 in a shaft seal manner; a plurality of first connecting rods 43 are fixedly connected to the middle of the rotating shaft 42; the first connecting rods 43 are located inside the first collection box 105; the bottom of the first connecting rod 43 is fixedly connected with a second scraping plate 44; when the device is started, the motor 4 will also start, and the motor 4 will drive the rotating shaft 42 to rotate together with the first connecting rod 43. When the first connecting rod 43 rotates, it will drive the second scraping plate 44 to rotate together. When the second scraping plate 44 rotates, it will make the water droplets at the bottom of the first collection box 105 flow until the water droplets flow into the inside of the drain pipe 110; when the motor 4 starts, it will make the rotating shaft 42 drive the second scraping plate 44 to rotate and make the water droplets at the bottom of the first collection box 105 enter the inside of the drain pipe 110, realizing the guidance of the water droplet flow direction in the first collection box 105 by the device, reducing the accumulation of water droplets in the collection box, and enhancing the collection effect of the second collection box 111 on water droplets.

[0029] Please refer to Figure 4 and Figure 5As shown in the figure, a first magnet 5 is fixedly connected to the end of the first connecting rod 43; a plurality of fixing plates 52 are fixedly connected to the inner side wall of the first collection box 105; the fixing plates 52 and the first magnet 5 are arranged in correspondence; a second connecting rod 53 is fixedly connected between adjacent fixing plates 52; a steel ball 54 is rotatably connected to the middle of the second connecting rod 53; when the first connecting rod 43 rotates, it will also drive the first magnet 5 to rotate. When the first magnet 5 rotates, it will exert a changing magnetic force on the steel ball 54. The steel ball 54 will swing along the second connecting rod 53 under the action of the magnetic force. When swinging, the steel ball 54 will strike the side wall of the first collection box 105, accelerating the falling speed of the water droplets on the side wall of the first collection box 105; when the first connecting rod 43 rotates, it will drive the first magnet 5 to rotate. The magnetic force exerted by the first magnet 5 on the steel ball 54 when rotating will cause the steel ball 54 to continuously strike the inner side wall of the first collection box 105, increasing the falling speed of the water droplets on the side wall of the first collection box 105 and shortening the time for the water droplets to enter the downpipe 110.

[0030] Please refer to Figure 4 As shown in the figure, a plurality of guiding plates 6 are fixedly connected to the inner side wall in the middle of the first collection box 105; a water dripping opening 62 is formed at the bottom of the guiding plate 6; during the falling process of the water droplets on the inner side wall of the first collection box 105, they will reach the surface of the guiding plate 6 and fall along the surface of the guiding plate 6 to the bottom of the first collection box 105. Some water droplets will slide along the surface of the guiding plate 6 to the water dripping opening 62 and then drip inside the water dripping opening 62 to the bottom of the first collection box 105; through the combined action of the guiding plate 6 and the water dripping opening 62, the water droplets on the inner side wall of the first collection box 105 will fall along the surface of the guiding plate 6 to the bottom of the first collection box 105, optimizing the distribution of the water droplets in the first collection box 105, reducing the water droplets accumulated at the inner corners in the first collection box 105, and enhancing the guiding effect of the second scraping plate 44 on the water droplets.

[0031] Please refer to Figure 4 As shown in the figure, a plurality of bristles 7 are fixedly connected to the bottom of the second scraping plate 44; when the second scraping plate 44 rotates, the bristles 7 will also come into contact with the bottom of the first collection box 105. When the bristles 7 come into contact, they will also come into contact with the water droplets, guiding the water droplets into the downpipe 110; by arranging the bristles 7, when the second scraping plate 44 rotates, the bristles 7 will come into contact with the water droplets, increasing the contact area between the device and the water droplets, enhancing the adsorption and guiding effect of the device on the water droplets, and shortening the time required for the water droplets to enter the downpipe 110.

[0032] Working principle: High-temperature and high-pressure water passing through the waste heat section of the boiler is injected into the flash evaporator 102 through the water injection port 103. The flash evaporator 102 flashes the hot water and turns part of the hot water into low-pressure saturated water vapor. This part of the water vapor enters the first gas outlet pipe 104 and then reaches the first collection box 105. At this time, part of the water vapor reaching the first collection box 105 will liquefy into water droplets. The water droplets will gather at the bottom of the first collection box 105 and flow into the second collection box 111 through the downcomer 110. The remaining water vapor will enter the heating pipe 107 through the return pipe 106, be heated again inside the heating pipe 107, and then the water vapor will enter the spin film deaerator head 109 through the second gas outlet pipe 108 to provide heat for the spin film deaerator head 109, driving the spin film deaerator head 109 to deaerate the condensed water. After the spin film deaerator head 109 finishes deaeration, the qualified deaerated water will enter the interior of the main body 1; by pulling the first scraper 2, the heat preservation cloth 22 is in a stretched state, increasing the coverage area of the heat preservation cloth 22 on the first gas outlet pipe 104, improving the heat preservation effect on the water vapor. At the same time, the first scraper 2 will rub against the first gas outlet pipe 104 during movement, reducing the impurities on the surface of the first gas outlet pipe 104; the oil bag 3 is filled with anti-rust paint. During the movement of the first scraper 2, the oil bag 3 will be squeezed, and the anti-rust paint inside the oil bag 3 will flow to the surface of the first gas outlet pipe 104 through the round hole 32, increasing the water resistance of the first gas outlet pipe 104; when the equipment starts, the motor 4 will also start. The motor 4 will drive the rotating shaft 42 and the first connecting rod 43 to rotate together. When the first connecting rod 43 rotates, it will drive the second scraper 44 to rotate together. When the second scraper 44 rotates, it will make the water droplets at the bottom of the first collection box 105 flow until the water droplets flow into the downcomer 110; when the first connecting rod 43 rotates, it will also drive the first magnet 5 to rotate. When the first magnet 5 rotates, it will exert a changing magnetic force on the iron ball 54. The iron ball 54 will swing along the second connecting rod 53 under the action of the magnetic force. When swinging, the iron ball 54 will knock on the side wall of the first collection box 105, accelerating the falling speed of the water droplets on the side wall of the first collection box 105; the water droplets on the inner side wall of the first collection box 105 will reach the surface of the guiding plate 6 during the falling process and fall to the bottom of the first collection box 105 along the surface of the guiding plate 6. Part of the water droplets will slide down along the surface of the guiding plate 6 to the water dripping port 62 and then drip to the bottom of the first collection box 105 inside the water dripping port 62; when the second scraper 44 rotates, the brush hair 7 will also contact the bottom of the first collection box 105. When the brush hair 7 contacts, it will also contact the water droplets, guiding the water droplets into the downcomer 110.

[0033] The basic principles, main features and advantages of the present utility model have been shown and described above. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed.

Claims

1. A hot water flash deaerator, comprising a main body (1), characterized in that: A flash evaporator (102) is fixedly connected to the top of the main body (1); a second collection box (111) is fixedly connected to the top of the main body (1); a film spinning deaerator head (109) is communicated with the top of the main body (1); a water injection port (103) is communicated with the middle of the flash evaporator (102); a first gas outlet pipe (104) is communicated with the top of the flash evaporator (102); the end of the first gas outlet pipe (104) is communicated with a first collection box (105); a reflux pipe (106) is communicated with the middle of the first collection box (105); a downcomer (110) is communicated with the bottom of the first collection box (105); the downcomer (110) is in a communicating relationship with the second collection box (111); the end of the reflux pipe (106) is communicated with a heating pipe (107); the heating pipe (107) is located inside the flash evaporator (102); the end of the heating pipe (107) is communicated with a second gas outlet pipe (108); the second gas outlet pipe (108) is in a communicating relationship with the film spinning deaerator head (109).

2. The hot water flash deaerator according to claim 1, wherein: A plurality of first scraping plates (2) are fixedly connected to the middle of the first gas outlet pipe (104); a heat preservation cloth (22) is fixedly connected between adjacent first scraping plates (2).

3. The hot water flash deaerator according to claim 2, characterized in that: An oil bag (3) is fixedly connected to the inner side wall of the heat preservation cloth (22); a plurality of round holes (32) are formed in the middle of the oil bag (3).

4. The hot water flash deaerator according to claim 3, characterized in that: A motor (4) is fixedly connected to the top of the main body (1); a rotating shaft (42) is fixedly connected to the output end of the motor (4); the rotating shaft (42) is in a shaft sealing connection with the first collection box (105); a plurality of first connecting rods (43) are fixedly connected to the middle of the rotating shaft (42); the first connecting rods (43) are located inside the first collection box (105); a second scraping plate (44) is fixedly connected to the bottom of the first connecting rod (43).

5. The hot water flash deaerator according to claim 4, characterized in that: A first magnet (5) is fixedly connected to the end of the first connecting rod (43); a plurality of fixing plates (52) are fixedly connected to the inner side wall of the first collection box (105); the fixing plates (52) are arranged corresponding to the first magnet (5); a second connecting rod (53) is fixedly connected between adjacent fixing plates (52); an iron ball (54) is rotatably connected to the middle of the second connecting rod (53).

6. The hot water flash deaerator according to claim 5, characterized in that: A plurality of guiding plates (6) are fixedly connected to the middle inner side wall of the first collection box (105); a water dripping port (62) is formed in the bottom of the guiding plate (6).

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