Exhaust steam recycling device of high-pressure deaerator

Abstract

The utility model discloses a high-pressure deaerator exhaust steam recycling device, and belongs to the field of exhaust steam recycling, the high-pressure deaerator exhaust steam recycling device comprises a high-pressure deaerator body and a continuous blowdown hot water recycling mechanism, the inner wall of the high-pressure deaerator body is fixedly communicated with a steam exhaust pipe, the top of the steam exhaust pipe is fixedly provided with a first flange plate, and the flange plate is fixedly provided with a second flange plate; a second flange plate is attached to the top of the first flange plate, a recycling pipe is fixedly connected to the top of the second flange plate, the outer edge of the recycling pipe fixedly communicates with a branch pipe, and a positioning plate is fixedly installed on the inner wall of the branch pipe; by opening the valve, a hot air source in the inner cavity of the high-pressure deaerator body can be discharged into the low-pressure deaerator through the recycling pipe to be recycled, heat source loss is reduced, the utilization rate is increased, the sealing performance of the inner cavity of the recycling pipe can be monitored in real time through the branch pipe, the first electrode plate, the tympanic membrane and the second electrode plate, and the sealing performance of the inner cavity of the recycling pipe is monitored. And early warning can be given out in time when leakage occurs due to insufficient air pressure, so that workers can maintain leakage points in time.

Description

Technical Field

[0001] The present application relates to the technical field of exhaust steam recovery, and in particular to a high-pressure deaerator exhaust steam recovery and utilization device. Background Art

[0002] In a high-pressure deaerator, when the steam entering the thermal high-pressure deaerator heats the water to boiling, the partial pressure of the water vapor Psteam is almost the full pressure on the water surface, and the partial pressure of other gases (oxygen, nitrogen, carbon dioxide, etc.) will approach zero, so the amount of other gases dissolved in the water will approach zero, and these gases will completely escape from the water into the space above the deaerator head, so exhaust steam recovery is needed to recycle the hot gas.

[0003] During the daily operation of a thermal power plant, a high-pressure deaerator continuously discharges oxygen directly into the atmosphere through an exhaust valve to achieve deoxygenation. The designed discharge volume is 0.5% of the deaerator flow rate. The boiler continuously discharges hot water to the fixed expansion tank for discharge. The heat loss of hot water is calculated as 1% of the boiler discharge volume. During the boiler startup process, heat loss is caused by exhausting steam into the air. Each time the boiler is started, about 1.5 hours of steam production is lost by exhausting steam into the air. The boiler exhausts steam into the air, the deaerator is emptied, and hot water is continuously discharged. The original design of this part of the heat collection and utilization rate is low, and it is in a state of direct air cooling and waste. For this reason, this application proposes a high-pressure deaerator exhaust steam recovery and utilization device to solve the above problems. Utility Model Content

[0004] In view of the deficiencies of the prior art, the present invention provides a high-pressure deaerator exhaust steam recovery and utilization device, which overcomes the deficiencies of the prior art and aims to solve the problems in the background technology.

[0005] In order to achieve the above-mentioned purpose, the present application adopts the following technical scheme: a high-pressure deaerator exhaust steam recovery and utilization device, comprising a high-pressure deaerator body and a continuous sewage hot water recovery mechanism, the inner wall of the high-pressure deaerator body is fixedly connected to an exhaust pipe, the top of the exhaust pipe is fixedly installed with a flange plate 1, the top of the flange plate 1 is fitted with a flange plate 2, the top of the flange plate 2 is fixedly connected to a recovery pipe, the outer edge of the recovery pipe is fixedly connected to a branch pipe, the inner wall of the branch pipe is fixedly installed with a positioning plate, the bottom of the positioning plate is fixedly installed with an electrode plate 1, the inner wall of the branch pipe is fixedly connected to the outer edge of the eardrum, the side of the eardrum close to the electrode plate 1 is fixedly installed with an electrode plate 2, and the top of the branch pipe is fixedly installed with a warning light.

[0006] As a preferred embodiment, the continuous sewage hot water recovery mechanism includes a drain pipe and a container, the top of the drain pipe is communicated with the high-pressure deaerator body, the bottom end of the drain pipe is arranged in the inner cavity of the container, the inner wall of the container is fixedly installed with a filter screen, the outer edge of the container is fixedly connected to a collecting pipe, the inner walls of the collecting pipe and the drain pipe are both installed with solenoid valves, and the container is placed on the ground.

[0007] By adopting the above technical solution, the hot water source in the inner cavity of the high-pressure deaerator body can be discharged through the drain pipe to the inner wall of the container and filtered through the filter net, and then discharged to the outside through the collection pipe for sampling and analysis to confirm whether this hot water source can be used.

[0008] As a preferred embodiment, the flange 1 and the flange 2 are fixedly connected by five bolts distributed in a ring.

[0009] By adopting the above technical solution, the flange 1 and the flange 2 can be firmly connected to ensure that they will not be easily detached.

[0010] As a preferred embodiment, a steam source detector is fixedly installed on the outer edge of the recovery pipe, a pipeline is fixedly connected to the inner wall of the recovery pipe, a valve is installed on the outer edge of the recovery pipe, one end of the recovery pipe away from the high-pressure deaerator body is connected to the low-pressure deaerator, and a solenoid valve is installed on the inner wall of the pipeline.

[0011] By adopting the above technical solution, the steam source discharged from the inner cavity of the recovery pipe can be tested to see if it is qualified. At the same time, the valve can be opened to discharge the steam source initially entering the inner cavity of the recovery pipe to the outside through the pipeline, thereby ensuring that the gas source with unqualified temperature will not enter the low-pressure deaerator.

[0012] As a preferred embodiment, a positioning rod is fixedly connected to the inner top of the branch pipe, and a bottom end of the positioning rod is fixedly connected to a side of the positioning plate away from the electrode sheet.

[0013] By adopting the above technical solution, the positioning plate can be supported and positioned to ensure that it will not shake or shift when subjected to pressure shock from the steam source.

[0014] As a preferred embodiment, the middle portion of the eardrum is elastic, and the top of the second electrode sheet fits with the bottom of the first electrode sheet.

[0015] By adopting the above technical solution, when the inner cavity of the eardrum is impacted by steam pressure, the middle part of the eardrum can be pushed to drive the second electrode piece to contact the first electrode piece, thereby generating a current signal.

[0016] As a preferred embodiment, a controller is fixedly installed on the outer edge of the high-pressure deaerator body, and the warning light, electrode sheet 1, electrode sheet 2 and the controller are all electrically connected.

[0017] By adopting the above technical solution, when the gas in the recovery tube cavity flows normally and electrode piece 1 and electrode piece 2 are in normal contact, a signal will be transmitted to the controller, and then the controller will control the warning light to emit a green light. When the gas in the recovery tube cavity flows normally, but electrode piece 1 and electrode piece 2 cannot be in contact, the air pressure in the recovery tube cavity is insufficient to push the middle part of the eardrum to drive electrode piece 2 to move and contact electrode piece 1. This will also transmit a signal to the controller, and then control the warning light to emit a red light, which serves as a warning to the staff, so that the leakage point can be detected in time.

[0018] As a preferred embodiment, two support seats are provided at the bottom of the high-pressure deaerator body, the tops of the two support seats are arc-shaped, the high-pressure deaerator body is adapted to be arranged on the arc inner walls of the two support seats, and the bottoms of the two support seats are in contact with the ground.

[0019] By adopting the above technical solution, the high-pressure deaerator body can be lifted and supported to ensure that it can be stably placed on the ground and will not fall over easily.

[0020] Beneficial effects of this application:

[0021] 1. This high-pressure deaerator exhaust steam recovery and utilization device opens a valve to allow the hot gas source in the inner cavity of the high-pressure deaerator body to be discharged into the low-pressure deaerator through a recovery pipe for recovery and utilization, thereby reducing heat source loss and improving utilization rate. The branch pipe, electrode sheet 1, eardrum and electrode sheet 2 enable the sealing of the inner cavity of the recovery pipe to be monitored in real time. When leakage occurs due to insufficient air pressure, an early warning can be issued in time, making it convenient for staff to maintain the leakage point in time.

[0022] 2. This high-pressure deaerator exhaust steam recovery and utilization device discharges the hot water source in the inner cavity of the high-pressure deaerator body through a drain pipe to the inner wall of the container and filters it through a filter screen. Then, another solenoid valve can be opened to discharge the filtered hot water source through a collection pipe to the outside for sampling and analysis to confirm whether this hot water source can be used. The steam source discharged from the inner cavity of the recovery pipe can be tested by a steam source detector to check whether it is qualified. At the same time, the valve can be opened to discharge the steam source initially entering the inner cavity of the recovery pipe to the outside through a pipeline, thereby ensuring that the gas source with unqualified temperature will not enter the low-pressure deaerator. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the overall structure of this application;

[0024] Figure 2 This is a schematic diagram of the cross-sectional structure of the container of this application;

[0025] Figure 3 This is a schematic diagram of a partially enlarged structure of this application;

[0026] Figure 4 This is a schematic diagram of the branch pipe cross-section and local enlarged structure of this application.

[0027] Numbers in the figure: 1. High-pressure deaerator body; 2. Continuous sewage hot water recovery mechanism; 201. Drain pipe; 202. Container; 203. Collection pipe; 204. Filter; 3. Exhaust pipe; 4. Flange one; 5. Flange two; 6. Bolt; 7. Recovery pipe; 8. Steam source detector; 9. Pipeline; 10. Valve; 11. Branch pipe; 12. Warning light; 13. Positioning rod; 14. Positioning plate; 15. Electrode one; 16. Tympanic membrane; 17. Electrode two; 18. Support seat. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0029] Reference Figure 1-4 A high-pressure deaerator exhaust steam recovery and utilization device includes a high-pressure deaerator body 1 and a continuous sewage hot water recovery mechanism 2. The inner wall of the high-pressure deaerator body 1 is fixedly connected with an exhaust pipe 3, the top of the exhaust pipe 3 is fixedly installed with a flange 4, the top of the flange 4 is fitted with a flange 2 5, the top of the flange 2 5 is fixedly connected with a recovery pipe 7, the outer edge of the recovery pipe 7 is fixedly connected with a branch pipe 11, the inner wall of the branch pipe 11 is fixedly installed with a positioning plate 14, the bottom of the positioning plate 14 is fixedly installed with an electrode piece 15, the inner wall of the branch pipe 11 is fixedly connected to the outer edge of the eardrum 16, the side of the eardrum 16 close to the electrode piece 15 is fixedly installed with an electrode piece 2 17, and the top of the branch pipe 11 is fixedly installed with a warning light 12.

[0030] See Figure 1 and Figure 2The continuous sewage hot water recovery mechanism 2 includes a drain pipe 201 and a container 202. The top of the drain pipe 201 is connected to the high-pressure deaerator body 1. The bottom end of the drain pipe 201 is arranged in the inner cavity of the container 202. A filter screen 204 is fixedly installed on the inner wall of the container 202. The outer edge of the container 202 is fixedly connected to a collecting pipe 203. The inner walls of the collecting pipe 203 and the drain pipe 201 are both equipped with solenoid valves. The container 202 is placed on the ground, so that the hot water source in the inner cavity of the high-pressure deaerator body 1 can be discharged to the inner wall of the container 202 through the drain pipe 201 and filtered through the filter screen 204. It can then be discharged to the outside through the collecting pipe 203 for sampling and analysis to confirm whether this hot water source can be used.

[0031] See Figure 3 The flange 1 4 and the flange 2 5 are fixedly connected by five bolts 6 distributed in a ring, so that the flange 1 4 and the flange 2 5 can be firmly connected to ensure that they will not be easily detached.

[0032] See Figure 3 and Figure 4 A steam source detector 8 is fixedly installed on the outer edge of the recovery pipe 7, and a pipe 9 is fixedly connected to the inner wall of the recovery pipe 7. A valve 10 is installed on the outer edge of the recovery pipe 7. The end of the recovery pipe 7 away from the high-pressure deaerator body 1 is connected to the low-pressure deaerator. A solenoid valve is installed on the inner wall of the pipe 9. The steam source discharged from the inner cavity of the recovery pipe 7 can be detected by the steam source detector 8 to check whether it is qualified. At the same time, the valve 10 can be opened to discharge the steam source initially entering the inner cavity of the recovery pipe 7 through the pipe 9 to the outside, thereby ensuring that the gas source with unqualified temperature will not enter the low-pressure deaerator.

[0033] See Figure 4 The inner top of the branch pipe 11 is fixedly connected with a positioning rod 13, and the bottom end of the positioning rod 13 is fixedly connected with a positioning plate 14 away from the side of the electrode sheet 15, so that the positioning plate 14 can be supported and positioned to ensure that it will not shake or shift when it is impacted by the steam source pressure.

[0034] See Figure 4 The middle part of the eardrum 16 is elastic, and the top of the second electrode 17 fits with the bottom of the first electrode 15, so that when the inner cavity of the eardrum 16 is impacted by steam pressure, it can push the middle part of the eardrum 16 to drive the second electrode 17 and the first electrode 15 to contact each other, thereby generating a current signal.

[0035] See Figure 1 and Figure 4A controller is fixedly installed on the outer edge of the high-pressure deaerator body 1, and the warning light 12, electrode piece 1 15, electrode piece 2 17 and the controller are all electrically connected, so that when the gas in the inner cavity of the recovery pipe 7 flows normally and the electrode piece 1 15 and the electrode piece 2 17 are in normal contact, a signal will be transmitted to the controller, and then the controller will control the warning light 12 to emit a green light. When the gas in the inner cavity of the recovery pipe 7 flows normally and the electrode piece 1 15 and the electrode piece 2 17 cannot contact each other, the air pressure in the inner cavity of the recovery pipe 7 is insufficient to push the middle part of the eardrum 16 to drive the electrode piece 2 17 to move and contact with the electrode piece 1 15, and the signal will also be transmitted to the controller, thereby controlling the warning light 12 to emit a red light, which serves as a warning to the staff, so that the leakage point can be detected in time.

[0036] See Figure 1 Two support seats 18 are provided at the bottom of the high-pressure deaerator body 1. The tops of the two support seats 18 are arc-shaped. The high-pressure deaerator body 1 is adapted to be arranged on the inner walls of the arcs of the two support seats 18. The bottoms of the two support seats 18 are in contact with the ground, so that the high-pressure deaerator body 1 can be lifted and supported to ensure that it can be stably placed on the ground and will not easily fall over.

[0037] Working principle: When using this device, first open the solenoid valve in the inner cavity of the drain pipe 201, so that the hot water source in the inner cavity of the high-pressure deaerator body 1 can be discharged through the drain pipe 201 to the inner wall of the container 202 and filtered through the filter 204, and then open another solenoid valve to discharge the filtered hot water source through the collection pipe 203 to the outside for sampling and analysis to confirm whether this hot water source can be used, and then use the steam source detector 8 to detect the steam source discharged from the inner cavity of the recovery pipe 7 to detect whether it is qualified. At the same time, open the valve 10 to discharge the steam source initially entering the inner cavity of the recovery pipe 7 through the pipe 9 to the outside, thereby ensuring that the gas source with unqualified temperature will not enter the low-pressure deaerator, and then The valve 10 can be opened so that the hot gas source in the inner cavity of the high-pressure deaerator body 1 can be discharged to the low-pressure deaerator through the recovery pipe 7 for recycling, and when the electrode piece 1 15 and the electrode piece 2 17 are in normal contact, a signal will be transmitted to the controller, and then the controller will control the warning light 12 to emit a green light. When the gas in the inner cavity of the recovery pipe 7 flows normally and the electrode piece 15 and the electrode piece 2 17 are not in contact, and the air pressure in the inner cavity of the recovery pipe 7 is insufficient and a leakage occurs, it cannot push the middle part of the eardrum 16 to drive the electrode piece 2 17 to move and contact the electrode piece 1 15, and it will also transmit a signal to the controller, and then control the warning light 12 to emit a red light, which serves as a warning to the staff, so that the leakage point can be detected in time.

[0038] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "two ends," "one end," "the other end," and the like, indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0039] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "connected," etc., should be understood in a broad sense. For example, "connected" may refer to a fixed connection, a detachable connection, or an integral connection; it may refer to a mechanical connection or an electrical connection; it may refer to a direct connection or an indirect connection through an intermediate medium; it may refer to internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0040] The present invention has been described above with reference to specific embodiments. However, those skilled in the art should understand that these descriptions are merely illustrative and are not intended to limit the scope of protection of the present invention. Those skilled in the art may make various modifications and variations to the present invention based on the spirit and principles of the present invention, and such modifications and variations are also within the scope of the present invention.

Claims

1. A high-pressure deaerator exhaust steam recovery device, comprising a high-pressure deaerator body (1) and a continuous waste water hot water recovery mechanism (2), characterized in that: The inner wall of the high-pressure deaerator body (1) is fixedly connected to an exhaust pipe (3), the top of the exhaust pipe (3) is fixedly installed with a flange plate 1 (4), the top of the flange plate 1 (4) is fitted with a flange plate 2 (5), the top of the flange plate 2 (5) is fixedly connected to a recovery pipe (7), the outer edge of the recovery pipe (7) is fixedly connected to a branch pipe (11), the inner wall of the branch pipe (11) is fixedly installed with a positioning plate (14), the bottom of the positioning plate (14) is fixedly installed with an electrode plate 1 (15), the inner wall of the branch pipe (11) is fixedly connected to the outer edge of the eardrum (16), the side of the eardrum (16) close to the electrode plate 1 (15) is fixedly installed with an electrode plate 2 (17), and the top of the branch pipe (11) is fixedly installed with a warning light (12).

2. A high-pressure deaerator exhaust steam recovery and utilization device according to claim 1, characterized in that: The continuous sewage hot water recovery mechanism (2) comprises a drain pipe (201) and a container (202); the top of the drain pipe (201) is in communication with the high-pressure deaerator body (1); the bottom end of the drain pipe (201) is arranged in the inner cavity of the container (202); a filter screen (204) is fixedly installed on the inner wall of the container (202); a collection pipe (203) is fixedly connected to the outer edge of the container (202); electromagnetic valves are installed on the inner walls of the collection pipe (203) and the drain pipe (201); and the container (202) is placed on the ground.

3. The high-pressure deaerator exhaust steam recovery and utilization device according to claim 1, characterized in that: The flange 1 (4) and the flange 2 (5) are fixedly connected by five bolts (6) distributed in a ring shape.

4. The high-pressure deaerator exhaust steam recovery and utilization device according to claim 1, characterized in that: A steam source detector (8) is fixedly installed on the outer edge of the recovery pipe (7), a pipeline (9) is fixedly connected to the inner wall of the recovery pipe (7), a valve (10) is installed on the outer edge of the recovery pipe (7), one end of the recovery pipe (7) away from the high-pressure deaerator body (1) is connected to the low-pressure deaerator, and a solenoid valve is installed on the inner wall of the pipeline (9).

5. The high-pressure deaerator exhaust steam recovery and utilization device according to claim 1, characterized in that: The inner top of the branch pipe (11) is fixedly connected to a positioning rod (13), and the bottom end of the positioning rod (13) is fixedly connected to a side of the positioning plate (14) away from the electrode sheet (15).

6. The high-pressure deaerator exhaust steam recovery and utilization device according to claim 1, characterized in that: The middle portion of the eardrum (16) is elastic, and the top of the second electrode sheet (17) fits in contact with the bottom of the first electrode sheet (15).

7. The high-pressure deaerator exhaust steam recovery and utilization device according to claim 1, characterized in that: A controller is fixedly mounted on the outer edge of the high-pressure deaerator body (1), and the warning light (12), electrode sheet 1 (15), electrode sheet 2 (17) and the controller are all electrically connected.

8. The high-pressure deaerator exhaust steam recovery and utilization device according to claim 1, characterized in that: Two support seats (18) are provided at the bottom of the high-pressure deaerator body (1), the tops of the two support seats (18) are arc-shaped, the high-pressure deaerator body (1) is adapted to be arranged on the inner walls of the arcs of the two support seats (18), and the bottoms of the two support seats (18) are in contact with the ground.

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