Deaerator exhaust steam energy recovery device

Abstract

A deaerator exhaust steam energy collecting device relates to the technical field of exhaust steam recovery equipment for deaerators, including a tower body, a swirl noise reduction and scouring assembly fixedly arranged in the middle and upper part of the inner cavity of the tower body, the swirl noise reduction and scouring assembly comprising a scouring cylinder vertically arranged in the tower body and a swirl cylinder sleeved in the scouring cylinder, a scouring assembly matched with the scouring cylinder arranged outside the tower body, the scouring assembly comprising a scouring straight pipe and a suction chamber, the scouring straight pipe cuts into the scouring cylinder from the wall of the scouring cylinder along the incident direction of the jet hole and is connected to the outer swirl channel, the suction chamber is connected to the scouring straight pipe through a throat bundle, a water inlet nozzle facing the throat bundle is fixedly arranged in the scouring inner cavity, and an exhaust steam inlet facing the injection path between the throat bundle and the water inlet nozzle is arranged on the side wall of the suction chamber. The present invention can fully absorb exhaust steam and recover heat energy, and reduce the noise generated during the scouring process, and has the advantages of easy use, good noise reduction performance, and high energy absorption efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of deaerator exhaust steam recovery equipment, in particular to a deaerator exhaust steam energy recovery device. Background Art

[0002] Deaerator is one of the key equipment of boiler and heating system. If the deaerator has poor deoxygenation capacity, it will cause serious damage to the corrosion of boiler feed water pipeline, economizer and other auxiliary equipment, and the economic loss caused will be dozens or hundreds of times the cost of the deaerator. Therefore, the Ministry of Electric Power of China has put forward some standards for the oxygen content of deaerator, that is, the oxygen content of atmospheric deaerator feed water should be less than 15цɡ / L, and the oxygen content of pressure deaerator feed water should be less than 7цɡ / L. Working principle of deaerator: the main condensate (including make-up water) from the low-pressure heater is adjusted by the water inlet regulating valve, enters the deaerator, and is mixed with other drainage in the deaerator, and is sprayed out through the nozzle or porous pipe to form an umbrella-shaped water film, which is mixed with the heating steam from bottom to top for mixed heat and mass transfer, and the feed water quickly reaches the saturation temperature under the working pressure. At this time, most of the dissolved oxygen and other gases in the water are basically resolved, achieving the purpose of deoxygenation. The dissolved oxygen and other gases precipitated from the water are continuously discharged from the exhaust pipe at the top of the deaerator with the residual steam. The main components of the deaerator exhaust steam are low-pressure water vapor and a trace amount of non-condensable gas. Since the exhaust steam is rich in heat, direct discharge is a waste of energy. Therefore, the exhaust steam can be used as a low-level heat source. Therefore, it is necessary to develop an energy recovery device that can fully recover the heat of the exhaust steam. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a deaerator exhaust steam energy collecting device which is simple and reliable in structure, easy to use and can efficiently absorb exhaust steam energy in view of the deficiencies in the prior art.

[0004] The technical problem to be solved by the present invention is achieved through the following technical solutions. The present invention is a deaerator exhaust steam energy collection device, which is characterized in that: it includes a tower body, the top of the tower body is provided with an exhaust port, the bottom is provided with a drain port, a swirl noise reduction and flushing component is fixedly provided in the middle and upper part of the inner cavity of the tower body, the swirl noise reduction and flushing component includes a flushing cylinder vertically arranged in the tower body and a swirl cylinder sleeved in the flushing cylinder, upper and lower blocking plates are fixedly connected at both ends of the flushing cylinder, the two ends of the swirl cylinder are fixedly connected with the upper and lower blocking plates, and a flow port communicating with the inner cavity of the swirl cylinder is opened on the lower blocking plate;

[0005] A jet hole arranged along the tangential direction of the scouring cylinder wall is provided on the wall of the scouring cylinder, a swirl guide plate is provided between the scouring cylinder and the swirl cylinder, the starting end of the swirl guide plate is fixed on the wall of the scouring cylinder on the side opposite to the incident direction of the jet hole, the terminal end of the swirl guide plate is arranged along the incident direction of the jet hole along the center line of the scouring cylinder and the swirl cylinder, and the terminal end of the swirl guide plate is located on the inner side of the starting end of the swirl guide plate, and a flow gap is provided between the terminal end of the swirl guide plate and the starting end of the swirl guide plate, the swirl guide plate cooperates with the scouring cylinder to form an outer rotation channel, the swirl guide plate cooperates with the swirl cylinder to form an inner rotation channel, the outer rotation channel and the inner rotation channel are connected through the flow gap to form a swirl channel, a plurality of swirl holes arranged evenly at intervals are provided on the wall of the swirl cylinder, the swirl holes are arranged obliquely downward along the tangential direction of the swirl cylinder wall and are arranged in the same rotation direction as the swirl channel, and the swirl cylinder and the swirl holes cooperate to form a swirl nozzle;

[0006] A flushing assembly matched with the flushing tube is arranged outside the tower body, and the flushing assembly includes a flushing straight pipe and a suction chamber. The flushing straight pipe cuts into the flushing tube from the wall of the flushing tube along the incident direction of the jet hole and is connected with the external rotation channel. A flushing inner cavity is arranged in the suction chamber, and the suction chamber is connected with the flushing straight pipe through a throat bundle. The diameter of the throat bundle is narrowed from the suction chamber to the flushing straight pipe. A water inlet nozzle facing the throat bundle is fixed in the flushing inner cavity, and an exhaust steam inlet facing the injection path between the throat bundle and the water inlet nozzle is arranged on the side wall of the suction chamber.

[0007] The above-mentioned deaerator exhaust steam energy collecting device of the present invention has a further preferred technical solution or technical feature: the downward inclination angle of the swirl hole is 15°~45°.

[0008] The above-mentioned deaerator exhaust steam energy collecting device of the present invention has a further preferred technical solution or technical feature that the scouring cylinder, cyclone cylinder and tower body are coaxially arranged.

[0009] The above-mentioned deaerator exhaust steam energy collecting device of the present invention has a further preferred technical solution or technical feature: the jet hole is opened in the upper part of the scouring tube.

[0010] The above-mentioned deaerator exhaust steam energy collection device of the present invention has a further preferred technical solution or technical feature: an overflow port is fixedly provided in the middle and upper part of the tower body, the height of the overflow port does not exceed the bottom end of the flushing cylinder, and the overflow port is fixedly connected to the matching overflow pipe.

[0011] The above-mentioned deaerator exhaust steam energy recovery device of the present invention has a further preferred technical solution or technical feature: an inspection hole is fixedly provided in the middle of the tower body, and a sealing cover is installed on the inspection hole.

[0012] The above-mentioned deaerator exhaust steam energy recovery device of the present invention has a further preferred technical solution or technical feature: the straight flushing pipe is arranged horizontally.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] When the present invention is used, the exhaust steam to be treated is input into the suction chamber from the exhaust steam inlet, and cooling water is sprayed to the throat tube bundle by using the water inlet nozzle. After the cooling water and the exhaust steam are mixed, they are flushed into the flushing cylinder along the flushing straight pipe. During the flushing process, the exhaust steam is absorbed by the cooling water and flows along the swirl channel, and then is ejected into the tower body through the swirl holes on the swirl cylinder. During the flushing process, the exhaust steam is absorbed by the cooling water, and then the heat energy of the exhaust steam is absorbed by the cooling water so that the cooling water is heated. The heated cooling water in the tower body is output for use through the water delivery pipeline. The flushing straight pipe of the present invention cuts into the flushing cylinder from the wall of the flushing cylinder, which avoids the cooling water and the exhaust steam from directly impacting the flushing cylinder and generating noise. The swirl channel formed by the swirl guide plate in the swirl barrel prolongs the contact distance between the exhaust steam and the cooling water, so that the exhaust steam is absorbed more fully; and the swirl hole on the swirl barrel and the swirl channel are arranged in the same rotation direction, so that the cooling water can more smoothly flow into the swirl barrel from the inner wall of the swirl barrel along the swirl hole, which avoids the direct impact of the cooling water on the inner wall of the swirl barrel and the generation of noise; in summary, the present invention can fully absorb the exhaust steam and recover the heat energy, and reduce the noise generated during the swirl process, and has the advantages of easy use, good noise reduction performance, high energy absorption efficiency, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A structural schematic diagram of the present invention;

[0016] Figure 2 It is a top view cross-sectional diagram of the present invention;

[0017] Figure 3 It is a schematic diagram of the cross-sectional structure of the flushing tube;

[0018] Figure 4 It is a schematic diagram of the cross-sectional structure of the cyclone tube from top view;

[0019] In the figure, 1 is a tower body, 2 is an exhaust port, 3 is a drain port, 4 is a flushing tube, 5 is a swirl tube, 6 is a flow port, 7 is a jet hole, 8 is a swirl guide plate, 9 is an external rotation channel, 10 is an internal rotation channel, 11 is a swirl hole, 12 is a flushing straight pipe, 13 is a suction chamber, 14 is a throat bundle, 15 is a water inlet nozzle, 16 is an exhaust steam inlet, 17 is a water supply pipeline, 18 is a regulating valve, 19 is an overflow port, 20 is an overflow pipe, 21 is an inspection hole, 22 is a water delivery pipeline, 23 is a water pump, 24 is a magnetic flap level gauge, 25 is a thermometer interface, and 26 is a spare pipeline. DETAILED DESCRIPTION

[0020] The specific technical solutions of the present invention are further described below to help those skilled in the art further understand the present invention without limiting the rights thereof.

[0021] A deaerator exhaust steam energy recovery device, referring to Figure 1 and Figure 2 , comprising a tower body 1, the top of the tower body 1 is provided with an exhaust port 2, the bottom is provided with a drain port 3, a swirl noise reduction and flushing component is fixedly provided in the middle and upper part of the inner cavity of the tower body 1, the swirl noise reduction and flushing component comprises a flushing cylinder 4 vertically arranged in the tower body 1 and a swirl cylinder 5 sleeved in the flushing cylinder 4, upper and lower blocking plates are fixedly connected at both ends of the flushing cylinder 4, the two ends of the swirl cylinder 5 are fixedly connected with the upper and lower blocking plates, and a flow port 6 communicating with the inner cavity of the swirl cylinder 5 is opened on the lower blocking plate;

[0022] Reference Figure 3 and Figure 4 A jet hole 7 is provided on the wall of the flushing tube 4 in the tangential direction of the wall of the flushing tube 4, and a swirl guide plate 8 is provided between the flushing tube 4 and the swirl tube 5. The starting end of the swirl guide plate 8 is fixed on the wall of the flushing tube 4 on the side opposite to the incident direction of the jet hole 7, and the terminal end of the swirl guide plate 8 is arranged along the center line of the flushing tube 4 and the swirl tube 5 along the incident direction of the jet hole 7, and the terminal end of the swirl guide plate 8 is located on the inner side of the starting end of the swirl guide plate 8, and a swirl guide plate 8 is provided between the terminal end of the swirl guide plate 8 and the starting end of the swirl guide plate 8. The swirl guide plate 8 cooperates with the flushing cylinder 4 to form an outer swirl channel 9, and the swirl guide plate 8 cooperates with the swirl cylinder 5 to form an inner swirl channel 10. The outer swirl channel 9 and the inner swirl channel 10 are connected through the flow gap to form a swirl channel. A plurality of swirl holes 11 arranged at even intervals are opened on the wall of the swirl cylinder 5. The swirl holes 11 are arranged obliquely downward along the tangent direction of the wall of the swirl cylinder 5 and are arranged in the same rotation direction as the swirl channel. The swirl cylinder 5 and the swirl holes 11 cooperate to form a swirl nozzle;

[0023] A flushing assembly matched with the flushing tube 4 is arranged outside the tower body 1, and the flushing assembly includes a flushing straight pipe 12 and a suction chamber 13. The flushing straight pipe 12 cuts into the flushing tube 4 from the wall of the flushing tube 4 along the incident direction of the jet hole 7 and is connected with the external rotation channel 9. A flushing inner cavity is arranged in the suction chamber 13. The suction chamber 13 is connected with the flushing straight pipe 12 through a throat bundle 14. The diameter of the throat bundle 14 is narrowed from the suction chamber 13 to the flushing straight pipe 12. A water inlet nozzle 15 facing the throat bundle 14 is fixed in the flushing inner cavity, and an exhaust steam inlet 16 facing the injection path between the throat bundle 14 and the water inlet nozzle 15 is arranged on the side wall of the suction chamber 13. The water inlet nozzle 15 is connected to a matching water supply pipeline 17, and a regulating valve 18 is installed on the water supply pipeline 17.

[0024] The downward tilt angle of the swirl hole 11 is 30°.

[0025] The scouring cylinder 4, the cyclone cylinder 5 and the tower body 1 are coaxially arranged.

[0026] The jet hole 7 is provided at the upper part of the flushing cylinder 4 .

[0027] An overflow port 19 is fixedly provided at the middle and upper part of the tower body 1 . The height of the overflow port 19 does not exceed the bottom end of the flushing cylinder 4 . The overflow port 19 is fixedly connected to a matching overflow pipe 20 .

[0028] A maintenance hole 21 is fixedly provided in the middle of the tower body 1 , and a sealing cover is installed on the maintenance hole 21 .

[0029] The straight flushing pipe 12 is arranged horizontally.

[0030] A water pipeline 22 is connected to the drain port 3 on the bottom plate of the tower body 1 , a water pump 23 is installed on the water pipeline 22 , and valves are installed on the water pipeline 22 on both sides of the water pump 23 ; and a spare pipeline 26 is connected in parallel to the water pipeline 22 , and the structure of the spare pipeline 26 is the same as that of the water pipeline 22 .

[0031] A magnetic flap level gauge 24 with a remote transmission function and a thermometer interface 25 are installed on the tower body 1 .

[0032] When in use, the exhaust steam to be treated is input into the suction chamber 13 from the exhaust steam inlet 16, and cooling water is sprayed to the throat bundle 14 by using the water inlet nozzle 15. The cooling water and the exhaust steam are mixed and then flushed into the flushing cylinder 4 along the flushing straight pipe. During the flushing process, the exhaust steam is absorbed by the cooling water and flows along the swirl channel, and then ejected into the tower body 1 through the swirl hole 11 on the swirl cylinder 5. During the flushing process, the exhaust steam is absorbed by the cooling water, and then the heat energy of the exhaust steam is absorbed by the cooling water so that the cooling water is heated, and the heated cooling water in the tower body 1 is output for use through the water delivery pipeline 22.

Claims

1. A deaerator exhaust steam energy recovery device, characterized in that: It comprises a tower body, the top of the tower body is provided with an exhaust port, the bottom of the tower body is provided with a drain port, a swirl noise reduction and flushing component is fixedly provided at the middle and upper part of the inner cavity of the tower body, the swirl noise reduction and flushing component comprises a flushing cylinder vertically arranged in the tower body and a swirl cylinder sleeved in the flushing cylinder, upper and lower blocking plates are respectively fixedly connected at both ends of the flushing cylinder, the two ends of the swirl cylinder are respectively fixedly connected with the upper and lower blocking plates, and a flow port communicating with the inner cavity of the swirl cylinder is opened on the lower blocking plate; A jet hole arranged along the tangential direction of the scouring cylinder wall is provided on the wall of the scouring cylinder, a swirl guide plate is provided between the scouring cylinder and the swirl cylinder, the starting end of the swirl guide plate is fixed on the scouring cylinder wall on the side opposite to the incident direction of the jet hole, the terminal end of the swirl guide plate is arranged along the incident direction of the jet hole along the center line of the scouring cylinder and the swirl cylinder, and the terminal end of the swirl guide plate is located on the inner side of the starting end of the swirl guide plate, and a flow gap is provided between the terminal end of the swirl guide plate and the starting end of the swirl guide plate, the swirl guide plate cooperates with the scouring cylinder to form an outer rotation channel, the swirl guide plate cooperates with the swirl cylinder to form an inner rotation channel, the outer rotation channel and the inner rotation channel are connected through the flow gap to form a swirl channel, a plurality of swirl holes arranged evenly spaced are provided on the wall of the swirl cylinder, the swirl holes are arranged obliquely downward along the tangential direction of the swirl cylinder wall and are arranged in the same rotation direction as the swirl channel, and the swirl cylinder and the swirl holes cooperate to form a swirl nozzle; A flushing assembly matched with the flushing tube is arranged outside the tower body, and the flushing assembly includes a flushing straight pipe and a suction chamber. The flushing straight pipe cuts into the flushing tube from the wall of the flushing tube along the incident direction of the jet hole and is connected with the external rotation channel. A flushing inner cavity is arranged in the suction chamber, and the suction chamber is connected with the flushing straight pipe through a throat bundle. The diameter of the throat bundle is narrowed from the suction chamber to the flushing straight pipe. A water inlet nozzle facing the throat bundle is fixed in the flushing inner cavity, and an exhaust steam inlet facing the injection path between the throat bundle and the water inlet nozzle is arranged on the side wall of the suction chamber.

2. A deaerator exhaust steam energy recovery device according to claim 1, characterized in that: The downward inclination angle of the swirl hole is 15°~45°.

3. A deaerator exhaust steam energy recovery device according to claim 1, characterized in that: The flushing cylinder, swirl cylinder and tower body are coaxially arranged.

4. A deaerator exhaust steam energy recovery device according to claim 1, characterized in that: The jet hole is arranged on the upper part of the flushing cylinder.

5. A deaerator exhaust steam energy recovery device according to claim 1, characterized in that: An overflow port is fixedly provided at the middle and upper part of the tower body. The height of the overflow port does not exceed the bottom end of the flushing cylinder. The overflow port is fixedly connected to a matching overflow pipe.

6. A deaerator exhaust steam energy recovery device according to claim 1, characterized in that: An inspection hole is fixedly provided in the middle of the tower body, and a sealing cover is installed on the inspection hole.

7. A deaerator exhaust steam energy recovery device according to claim 1, characterized in that: The flushing straight pipe is arranged horizontally.

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