Deaerator with vacuum function

Abstract

The utility model discloses a deaerator with a vacuum function, relates to the technical field of deaerators, and aims to solve the problems that an atomizing water sprayer of the deaerator sprays water into an atomized state through an atomizing spray head, but after long-term use, the atomizing spray head of a water spraying grate is easily blocked by incrustation scale after the water encounters high-temperature steam, so that the atomizing effect is influenced, and the deaerator is inconvenient to use. A deoxygenization tower is arranged at the upper end of a deoxygenization device body, a row spray is fixedly installed in the middle of the interior of the deoxygenization tower, a water spray nozzle cleaning mechanism is installed below the row spray, and an overflow drainage structure is fixedly installed in the lower end of the deoxygenization device body. A vacuum pump is installed on one side of the deoxidizing tower, an air suction pipe is installed at the air inlet end of the vacuum pump in a sealed mode, an air suction pipe valve is installed at one end of the air suction pipe in a sealed mode, a plurality of water spray nozzles are installed at the lower end of the row spray nozzle at equal intervals, and the water spray nozzle cleaning mechanism comprises an electric telescopic cylinder frame, an electric telescopic cylinder, a fixing plate, a dredging needle and a cleaning brush.

Description

Technical Field

[0001] The utility model relates to the technical field of deaerators, in particular to a deaerator with a vacuum function. Background Art

[0002] Deaerators are key components of boilers and heating systems. Their primary function is to remove dissolved oxygen and other gases from the feedwater of thermal systems, preventing corrosion of thermal equipment and ensuring the safe operation of power plants and industrial boilers. Deaerators are primarily classified into two categories: rotary film deaerators and vacuum deaerators. Rotary film deaerators include new rotary film deaerators and high-pressure deaerators, while vacuum deaerators are categorized into low-pressure vacuum deaerators and two-stage jet vacuum deaerators. Deaerators are widely used to deoxygenate feedwater for various power station boilers, industrial boilers, and thermal power plant makeup water. Their efficient deoxygenation capacity and stable performance are crucial for ensuring the safe operation of thermal equipment.

[0003] Chinese patent publication number CN214425971U discloses a rotary film deaerator, comprising a deaerator water tank, the bottom of which is sequentially equipped with a drain outlet, a deaerator water outlet, and an auxiliary heating pipe, an inspection port at one end of the deaerator water tank, a deaerator tower connected to the top of the deaerator water tank, a safety valve at the top of the deaerator tower, a pressure gauge on one side of the deaerator tower, a steam-water separator at the top of the deaerator tower, and a rotary film deaerator located above the interior of the deaerator tower. The deaerator tower of the rotary film deaerator can remove oxygen to ensure water purity, and the auxiliary heating pipe at the bottom can heat the deaerator water tank, which can quickly increase the water temperature and achieve deep deoxygenation. The rotary film deaerator can exchange heat between the water and the heated steam, forming a primary deoxygenation. The liquid-steam network provided by the packing inside the deaerator tower facilitates full contact between the feed water and the secondary steam, heating it to the saturation temperature and achieving deep deoxygenation.

[0004] The above-mentioned existing technical solutions have the following defects: the atomizing water sprayer of the deaerator sprays water into an atomized state through the atomizing nozzle, but after long-term use, when the water encounters high-temperature steam, the atomizing nozzle of the water grate is easily clogged by scale, thereby affecting the atomization effect and further affecting the deoxygenation effect. Therefore, we propose a deaerator with vacuum function to solve the above-mentioned problems. Utility Model Content

[0005] The purpose of the utility model is to provide a deaerator with a vacuum function to solve the problem that the atomizing water sprayer of the deaerator proposed in the above background technology sprays water into an atomized state through the atomizing nozzle, but after long-term use, the atomizing nozzle of the water sprinkling grate is easily clogged by scale after the water encounters high-temperature steam, thereby affecting the atomization effect and further affecting the deoxygenation effect.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a deaerator with vacuum function, comprising a deaerator body, a deaerator tower is provided at the upper end of the deaerator body, an exhaust nozzle is fixedly installed at the middle position inside the deaerator tower, a water nozzle cleaning mechanism is installed below the exhaust nozzle, an overflow drainage structure is fixedly installed inside the lower end of the deaerator body, a vacuum pump is installed on one side of the deaerator tower, an exhaust pipe is sealed at the air inlet end of the vacuum pump, and an exhaust pipe valve is sealed at one end of the exhaust pipe.

[0007] Preferably, a rotary film device is fixedly installed at the upper end of the deaerator, and the rotary film device is located above the exhaust spray. A packing layer is installed below the water nozzle cleaning mechanism, and a steam gas distribution plate is installed below the packing layer.

[0008] Preferably, a temperature sensor is sealed on the top of the lower end of the deaerator body, an air pressure sensor is sealed on the top of the lower end of the deaerator body, a steam inlet pipe is fixedly installed on the bottom of the lower end of the deaerator body, and a safety valve is sealed on the upper end of the deaerator tower.

[0009] Preferably, a plurality of water nozzles are equidistantly installed at the lower end of the exhaust nozzle, and the water nozzle cleaning mechanism includes an electric telescopic cylinder frame, an electric telescopic cylinder, a fixing plate, a dredging needle and a cleaning brush.

[0010] Preferably, an electric telescopic cylinder frame is symmetrically provided at the lower end of the water nozzle cleaning mechanism, one end of the electric telescopic cylinder frame is fixedly connected to the inner wall of the deaerator, an electric telescopic cylinder is installed above the electric telescopic cylinder frame, a fixing plate is installed above the two electric telescopic cylinders, and unblocking needles are equidistantly installed above the fixing plate, the unblocking needles are arranged corresponding to the water nozzles, and a cleaning brush is provided in an outer ring of the unblocking needles.

[0011] Preferably, the overflow drainage structure includes an outer drainage pipe, an inner drainage pipe, a drainage groove, a drainage pipe rack and a water immersion sensor. A drainage pipe rack is provided on the outside of the overflow drainage structure, and the upper end of the drainage pipe rack is fixedly connected to the inner wall of the lower end of the deaerator body.

[0012] Preferably, an overflow drain pipe is sealedly installed on one side of the bottom end of the deaerator body, an outer drain pipe is fixedly installed inside the drain pipe rack, an inner drain pipe is arranged inside the outer drain pipe, the lower end of the inner drain pipe passes through the drain pipe rack and is sealed with the overflow drain pipe, drainage grooves are symmetrically opened on both sides of the lower end of the outer drain pipe, a water immersion sensor is fixedly installed on the inner wall of the outer drain pipe, and the sensing port of the water immersion sensor is located on the same horizontal plane as the upper end of the inner drain pipe.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. During equipment inspection, the utility model can extend the electric telescopic cylinder. When the electric telescopic cylinder pushes the fixed plate to move upward, the dredging needle enters the interior of the water nozzle to dredge the clogged water nozzle. When the dredging needle moves upward again, the cleaning brush on the outside of the dredging needle cleans the inner wall of the nozzle of the water nozzle, thereby cleaning the water nozzle. This solves the problem that the atomizing water sprayer of the deaerator sprays water into an atomized state through the atomizing nozzle, but after long-term use, the atomizing nozzle of the water grate is easily clogged by scale after the water encounters high-temperature steam, thereby affecting the atomization effect and further affecting the deoxygenation effect.

[0015] 2. When the utility model is in use, when the water level is higher than the inner drain pipe, the water sensor will be triggered, which will control the valve of the outer drain pipe to open. At the same time, after the outer drain pipe is filled with liquid and the air is sealed, the liquid inside the bottom of the deaerator body will exert a downward pressure on the lower part due to gravity, and the lower part will produce an upward reaction force on the higher part. When this downward pressure is greater than the upward reaction force, the liquid will begin to flow through the siphon, thereby quickly draining the water level at the bottom of the deaerator body to the bottom of the drain channel, thereby achieving rapid water drainage and preventing the problem of excessive pressure in the deaerator body caused by excessive water level. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is the main view of the utility model;

[0017] Figure 2 It is a structural diagram of the utility model;

[0018] Figure 3 For this utility model Figure 2 A local method diagram of area A;

[0019] Figure 4 It is a structural schematic diagram of the overflow drainage structure in the utility model.

[0020] In the figure: 1. Deaerator body; 2. Deaerator tower; 3. Vacuum pump; 4. Water inlet pipe; 5. Temperature sensor; 6. Air pressure sensor; 7. Exhaust pipe; 8. Exhaust pipe valve; 9. Safety valve; 10. Overflow drainage structure; 11. Overflow drainage pipe; 12. Steam inlet pipe; 13. Sprayer; 14. Exhaust spray; 15. Water nozzle cleaning mechanism; 16. Packing layer; 17. Steam distributor; 18. Water nozzle; 19. Electric telescopic cylinder rack; 20. Electric telescopic cylinder; 21. Fixing plate; 22. Unclogging needle; 23. Cleaning brush; 24. Drain outer pipe; 25. Drain inner pipe; 26. Drain trough; 27. Drain pipe rack; 28. Water immersion sensor. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0022] See also Figure 1-4 The utility model provides an embodiment: a deaerator with vacuum function, including a deaerator body 1, a deaerator tower 2 is provided at the upper end of the deaerator body 1, an exhaust spray 14 is fixedly installed at the middle position inside the deaerator tower 2, a water nozzle cleaning mechanism 15 is installed below the exhaust spray 14, an overflow drainage structure 10 is fixedly installed inside the lower end of the deaerator body 1, a vacuum pump 3 is installed on one side of the deaerator tower 2, an exhaust pipe 7 is sealed at the air inlet end of the vacuum pump 3, and an exhaust pipe valve 8 is sealed at one end of the exhaust pipe 7.

[0023] When the equipment is inspected, the electric telescopic cylinder 20 can be extended. When the electric telescopic cylinder 20 pushes the fixed plate 21 to move upward, the dredging needle 22 enters the interior of the water nozzle 18 to dredge the blocked water nozzle 18. When the dredging needle 22 moves upward again, the cleaning brush 23 on the outside of the dredging needle 22 cleans the inner wall of the nozzle of the water nozzle 18, thereby cleaning the water nozzle 18 and preventing the water nozzle 18 from being blocked and affecting the atomization degree of the deoxygenation spray, thereby affecting the deoxygenation effect.

[0024] See also Figure 2 A film rotary device 13 is fixedly installed at the upper end of the deaerator 2, and the film rotary device 13 is located above the exhaust spray 14. A packing layer 16 is installed below the water nozzle cleaning mechanism 15, and a steam gas distribution plate 17 is installed below the packing layer 16.

[0025] See also Figure 1-2 A temperature sensor 5 is sealed and installed on the top of the lower end of the deaerator body 1, a pressure sensor 6 is sealed and installed on the top of the lower end of the deaerator body 1, a steam inlet pipe 12 is fixedly installed on the bottom end of the lower end of the deaerator body 1, and a safety valve 9 is sealed and installed on the upper end of the deaerator tower 2.

[0026] See also Figure 2-3 A plurality of water nozzles 18 are equidistantly installed at the lower end of the exhaust nozzle 14. The water nozzle cleaning mechanism 15 includes an electric telescopic cylinder frame 19, an electric telescopic cylinder 20, a fixed plate 21, a dredging needle 22 and a cleaning brush 23. The lower end of the water nozzle cleaning mechanism 15 is symmetrically provided with an electric telescopic cylinder frame 19. One end of the electric telescopic cylinder frame 19 is fixedly connected to the inner wall of the deaerator 2. An electric telescopic cylinder 20 is installed above the electric telescopic cylinder frame 19. A fixed plate 21 is installed above the two electric telescopic cylinders 20. Dredging needles 22 are equidistantly installed above the fixed plate 21. The dredging needles 22 are arranged corresponding to the water nozzles 18, and a cleaning brush 23 is arranged in a ring shape on the outer side of the dredging needle 22.

[0027] See also Figure 4 The overflow drainage structure 10 includes an outer drainage pipe 24, an inner drainage pipe 25, a drainage groove 26, a drainage pipe rack 27 and a water immersion sensor 28. A drainage pipe rack 27 is provided on the outside of the overflow drainage structure 10. The upper end of the drainage pipe rack 27 is fixedly connected to the inner wall of the lower end of the deaerator body 1, and the overflow drainage pipe 11 is sealed and installed on one side of the bottom end of the lower end of the deaerator body 1. The inner part of the drainage pipe rack 27 is fixedly installed with the outer drainage pipe 24, and the inner part of the drainage pipe 24 is provided with the inner drainage pipe 25. The lower end of the drainage inner pipe 25 passes through the drainage pipe rack 27 and is sealed and connected to the overflow drainage pipe 11. Drainage grooves 26 are symmetrically opened on both sides of the lower end of the outer drainage pipe 24. A water immersion sensor 28 is fixedly installed on the inner wall of the outer drainage pipe 24, and the sensing port of the water immersion sensor 28 is located at the same horizontal plane as the upper end of the drainage inner pipe 25.

[0028] Working principle: When in use, water forms a water film skirt through the rotary film device 13, and exchanges heat with the heated steam to form a primary deoxidation. Subsequently, the feed water is sent to the water nozzle 18 of the exhaust nozzle 14 by the deoxidation feed water pipe 4. The water is atomized and sprayed under the water inlet pressure to contact with the rising secondary heated steam. The mist droplets contact the packing layer 16 to form a water film. The water film is heated to a saturation temperature close to the working pressure of the deaerator. At the same time, the vacuum pump 3 is started and the vacuum pump 3 generates negative pressure. The gas in the deaerator body 1 is extracted through the exhaust pipe 7, maintaining a certain vacuum degree in the deaerator body 1, and extracting the gas dissolved in the water and the uncondensed steam. The deoxidized water is collected in the lower part of the deaerator, and the steam inlet pipe 12 in the deoxidation water tank 1 is again The water is heated to remove the gas in the water again. The water level in the lower part of the deaerator will gradually rise, thereby squeezing the gas, so that the gas is precipitated and deoxygenated again. The water enters the drainage inner pipe 25 through the drainage groove 26. When the water level is higher than the drainage inner pipe 25, the water immersion sensor 28 will be triggered. The water immersion sensor 28 controls the valve of the drainage inner pipe 25 to open. At the same time, after the drainage outer pipe 24 is filled with liquid and the air is sealed, the liquid inside the bottom end of the deaerator body 1 generates a downward pressure on the lower part due to gravity, and the lower part generates an upward reaction force on the higher part. When this downward pressure is greater than the upward reaction force, the liquid will begin to flow through the siphon, thereby quickly draining the water level at the lower end of the deaerator body 1 to below the drainage channel 26, thereby achieving rapid water drainage and preventing the problem of excessive pressure in the deaerator body 1 caused by excessive water level. When the equipment is inspected, the electric telescopic cylinder 20 can be extended. When the electric telescopic cylinder 20 pushes the fixed plate 21 to move upward, the dredging needle 22 enters the interior of the water nozzle 18 to dredge the clogged water nozzle 18. When the dredging needle 22 moves upward again, the cleaning brush 23 on the outside of the dredging needle 22 cleans the inner wall of the nozzle of the water nozzle 18, thereby cleaning the water nozzle 18 and preventing the water nozzle 18 from being blocked and affecting the atomization degree of the deoxygenation spray, thereby affecting the deoxygenation effect.

[0029] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A deaerator with vacuum function, comprising a deaerator body (1), characterized in that: A deaerator tower (2) is provided at the upper end of the deaerator body (1), a drain nozzle (14) is fixedly installed at the middle position inside the deaerator tower (2), a water nozzle cleaning mechanism (15) is installed below the drain nozzle (14), an overflow drainage structure (10) is fixedly installed inside the lower end of the deaerator body (1), a vacuum pump (3) is installed on one side of the deaerator tower (2), an air extraction pipe (7) is sealed at the air inlet end of the vacuum pump (3), an air extraction pipe valve (8) is sealed at one end of the air extraction pipe (7), a plurality of water nozzles (18) are equidistantly installed at the lower end of the drain nozzle (14), and the water nozzle cleaning mechanism (15) includes an electric telescopic cylinder frame ( 19), an electric telescopic cylinder (20), a fixed plate (21), a dredging needle (22) and a cleaning brush (23), the lower end of the water nozzle cleaning mechanism (15) is symmetrically provided with an electric telescopic cylinder frame (19), one end of the electric telescopic cylinder frame (19) is fixedly connected to the inner wall of the deaerator (2), an electric telescopic cylinder (20) is installed above the electric telescopic cylinder frame (19), a fixed plate (21) is installed above the two electric telescopic cylinders (20), and dredging needles (22) are equidistantly installed above the fixed plate (21), the dredging needles (22) are arranged corresponding to the water nozzle (18), and a cleaning brush (23) is arranged in an annular shape on the outer surface of the dredging needle (22).

2. A deaerator with vacuum function according to claim 1, characterized in that: A rotary film device (13) is fixedly installed at the upper end of the interior of the deaerator (2), and the rotary film device (13) is located above the exhaust nozzle (14). A packing layer (16) is installed below the water nozzle cleaning mechanism (15), and a steam gas distribution plate (17) is installed below the packing layer (16).

3. The deaerator with vacuum function according to claim 1, characterized in that: A temperature sensor (5) is sealed and installed at the top end of one side of the lower end of the deaerator body (1), a pressure sensor (6) is sealed and installed at the top end of one side of the lower end of the deaerator body (1), a steam inlet pipe (12) is fixedly installed at the bottom end of the lower end of the deaerator body (1), and a safety valve (9) is sealed and installed at the upper end of the deaerator tower (2).

4. The deaerator with vacuum function according to claim 1, characterized in that: The overflow drainage structure (10) comprises an outer drainage pipe (24), an inner drainage pipe (25), a drainage groove (26), a drainage pipe rack (27) and a water immersion sensor (28). A drainage pipe rack (27) is provided on the outer side of the overflow drainage structure (10), and the upper end of the drainage pipe rack (27) is fixedly connected to the inner wall of the lower end of the deaerator body (1).

5. The deaerator with vacuum function according to claim 4, characterized in that: An overflow drain pipe (11) is sealed and installed on one side of the bottom end of the deaerator body (1). An outer drain pipe (24) is fixedly installed inside the drain pipe rack (27). An inner drain pipe (25) is provided inside the outer drain pipe (24). The lower end of the inner drain pipe (25) passes through the drain pipe rack (27) and is sealed and connected to the overflow drain pipe (11). Drain grooves (26) are symmetrically provided on both sides of the lower end of the outer drain pipe (24). A water immersion sensor (28) is fixedly installed on the inner wall of the outer drain pipe (24). The sensing port of the water immersion sensor (28) is located at the same horizontal plane as the upper end of the inner drain pipe (25).

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