Dead steam recovery device of deaerator

Abstract

The utility model discloses a dead steam recovery device of a deaerator, which relates to the technical field of dead steam recovery and comprises a recovery box. The heat exchange assembly is used for recovering waste heat of dead steam; the heat exchange assembly comprises a left vertical pipe and a right vertical pipe which are vertically and fixedly installed in the recycling box, a plurality of heat exchange pipes are obliquely connected between the left vertical pipe and the right vertical pipe, a steam inlet pipe is fixedly connected to the side wall of the left vertical pipe, and an air outlet pipe is fixedly connected to the side wall of the right vertical pipe. The steam inlet pipe and the gas outlet pipe both penetrate to the outside of the recycling box; and the cleaning assembly is used for cleaning the surfaces of the heat exchange tubes. The utility model solves the problem that the heating efficiency is influenced because water scale is easy to generate after long-time use, and the water scale is attached to the outer wall of the heat exchange copper pipe, so that water cannot be in direct contact with the heat exchange copper pipe.

Description

Technical Field

[0001] The utility model belongs to the technical field of exhaust steam recovery, and specifically relates to an exhaust steam recovery device of a deaerator. Background Art

[0002] At present, industrial boilers or power station boilers use a two-stage thermal deaerator process to remove dissolved oxygen in boiler feed water. The first-stage deaerator, i.e., the atmospheric deaerator, and the second-stage deaerator, i.e., the pressure deaerator, both produce a certain amount of exhaust steam. The exhaust steam generated by many industrial enterprises during the production process is generally discharged directly, which not only causes white pollution and thermal pollution, but also causes waste of water resources and thermal energy.

[0003] Exhaust steam is mainly composed of high-temperature water vapor, which contains more heat and water. Most existing recovery devices cannot separate heat and water for recovery and utilization.

[0004] The existing patent (publication number: CN213577454U) proposes a waste steam recovery device for a deaerator exhaust door, including a water tank and a recovery tank. The recovery tank is arranged at the lower left side of the water tank. A left vertical pipe is vertically fixed in the water tank above the recovery tank. The lower part of the left vertical pipe penetrates to the outside of the water tank. When the waste steam enters the copper tube and is transmitted to the right, the water in the water tank can be heated. At the same time, the water condenses and slides to the left side to be collected in the recovery tank, which can more efficiently recycle the heat inside the waste steam and separate the water.

[0005] The stored water used may contain a large amount of heavy metal ions and calcium and magnesium ions, which are prone to scale after long-term use. The scale adheres to the outer wall of the heat exchange copper tube, which will prevent the water and the heat exchange copper tube from directly contacting each other, thereby affecting the heating efficiency.

[0006] In view of this, this application is hereby filed. Utility Model Content

[0007] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a deaerator exhaust steam recovery device to achieve the desired purpose of preventing scale from forming on the outer wall of the heat exchange copper tube.

[0008] In order to solve the above technical problems, the utility model provides a deaerator exhaust steam recovery device, comprising a recovery box;

[0009] Heat exchange components used for recovering waste heat from exhaust steam;

[0010] The heat exchange assembly includes a left vertical pipe and a right vertical pipe which are vertically fixedly installed inside the recovery box, a plurality of heat exchange pipes are obliquely connected between the left vertical pipe and the right vertical pipe, a steam inlet pipe is fixedly connected to the side wall of the left vertical pipe, and an air outlet pipe is fixedly connected to the side wall of the right vertical pipe, and the steam inlet pipe and the air outlet pipe both penetrate to the outside of the recovery box;

[0011] Also included is a cleaning component for cleaning the surface of the heat exchange tube.

[0012] Furthermore, the cleaning component includes a threaded rod rotatably installed inside the recovery box and a driving motor arranged on the outer wall of the recovery box for driving the threaded rod to rotate, a movable plate is threadedly connected to the threaded rod, and a sliding groove is provided on the side wall of the movable plate relative to the heat exchange tube, a sliding seat is slidably installed inside the sliding groove, a connecting rod is fixedly installed on the side wall of the sliding seat, a sliding sleeve is fixedly installed on the end of the connecting rod away from the sliding seat, and the sliding sleeve is slidably sleeved on the outer wall of the heat exchange tube.

[0013] Furthermore, a water inlet pipe is arranged at the upper portion of the left side wall of the recovery box, and a drain pipe is arranged at the lower portion of the right side wall of the recovery box.

[0014] Furthermore, the driving motor is fixedly mounted on the left outer wall of the recovery box, and the driving end of the driving motor is fixedly connected to one end of the threaded rod.

[0015] Furthermore, a guide rod is installed inside the recovery box, and the movable plate is slidably connected to the guide rod.

[0016] Furthermore, the slide groove is a T-slot structure, and the slide seat is adapted to the slide groove.

[0017] Furthermore, an annular groove is provided on the inner wall of the sliding sleeve, a ball is embedded in the annular groove, and an outer wall of the ball abuts against an outer wall of the heat exchange tube.

[0018] Furthermore, flexible edges are installed at the ports at both ends of the heat exchange tube, and the flexible edges are in contact with the outer wall of the heat exchange tube.

[0019] After adopting the above technical scheme, the utility model has the following beneficial effects compared with the prior art.

[0020] 1. In the utility model, the threaded rod can be driven to rotate by a driving motor, and the threaded rod drives the movable plate to move horizontally inside the recovery box. The movable plate can drive the sliding sleeve to move on the heat exchange tube through the slide groove, the slide seat and the connecting rod. Then, the sliding sleeve can be used to scrape and clean the outer wall of the heat exchange tube to prevent scale from adhering to the outer wall of the heat exchange tube, thereby improving the waste heat recovery efficiency.

[0021] 2. In the utility model, the sliding friction between the sliding sleeve and the heat exchange tube can be converted into rolling friction by the cooperation of the annular groove and the ball bearings arranged on the inner wall of the sliding sleeve, thereby reducing the friction between the sliding sleeve and the heat exchange tube and reducing wear. The outer wall of the heat exchange tube is scraped and cleaned by the flexible edge to avoid hard contact between the sliding sleeve and the heat exchange tube, further reducing wear and extending the service life of the heat exchange tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation on the present invention. Obviously, the accompanying drawings described below are only some embodiments. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without creative work. In the accompanying drawings:

[0023] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0024] Figure 2 It is a three-dimensional structural schematic diagram of the utility model;

[0025] Figure 3 It is a schematic diagram of the cross-sectional structure of the utility model;

[0026] Figure 4 It is a schematic diagram of the cross-sectional structure of the sliding sleeve of the utility model.

[0027] Numbers in the figure:

[0028] 1. Recovery box; 2. Steam inlet pipe; 3. Left vertical pipe; 4. Heat exchange pipe; 5. Right vertical pipe; 6. Air outlet pipe; 7. Water inlet pipe; 8. Drain pipe; 9. Threaded rod; 10. Moving plate; 11. Slide; 12. Slide seat; 13. Connecting rod;

[0029] 14. Sliding sleeve; 15. Driving motor; 16. Annular groove; 17. Ball bearing; 18. Flexible edge.

[0030] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. The following embodiments are used to illustrate the utility model but are not used to limit the scope of the utility model.

[0032] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] like Figures 1 to 4 As shown, the utility model provides a waste steam recovery device for a deaerator.

[0035] Specifically, by Figure 1-3 Given, including recycling bin 1;

[0036] Heat exchange components used for recovering waste heat from exhaust steam;

[0037] The heat exchange assembly includes a left vertical pipe 3 and a right vertical pipe 5 which are vertically fixedly installed inside the recovery box 1, and a plurality of heat exchange pipes 4 are obliquely connected between the left vertical pipe 3 and the right vertical pipe 5. A steam inlet pipe 2 is fixedly connected to the side wall of the left vertical pipe 3, and an air outlet pipe 6 is fixedly connected to the side wall of the right vertical pipe 5. Both the steam inlet pipe 2 and the air outlet pipe 6 extend to the outside of the recovery box 1.

[0038] It also includes a cleaning component for cleaning the surface of the heat exchange tube 4.

[0039] In the utility model, a left vertical pipe 3 and a right vertical pipe 5 are vertically arranged on the left and right sides of the recovery box 1, so that a plurality of heat exchange tubes 4 are obliquely connected inside the recovery box 1. When the exhaust steam enters the right vertical pipe 5 and is transmitted to the right, the water in the recovery box 1 can be heated. At the same time, the water condenses and slides to the left side and is discharged and collected from the left vertical pipe 3. This can more efficiently recycle the heat inside the exhaust steam and separate the water.

[0040] Furthermore, as a specific implementation of the present invention, the present invention provides a waste steam recovery device for a deaerator.

[0041] Specifically, Figure 1-Figure 3 It is given that the cleaning component includes a threaded rod 9 rotatably installed inside the recycling box 1 and a driving motor 15 arranged on the outer wall of the recycling box 1 for driving the threaded rod 9 to rotate, a movable plate 10 is threadedly connected to the threaded rod 9, and a sliding groove 11 is opened on the side wall of the movable plate 10 relative to the heat exchange tube 4, a sliding seat 12 is slidably installed inside the sliding groove 11, a connecting rod 13 is fixedly installed on the side wall of the sliding seat 12, and a sliding sleeve 14 is fixedly installed on the end of the connecting rod 13 away from the sliding seat 12, and the sliding sleeve 14 is slidably sleeved on the outer wall of the heat exchange tube 4.

[0042] In the utility model, the threaded rod 9 can be driven to rotate by the driving motor 15, and the threaded rod 9 drives the movable plate 10 to move horizontally inside the recovery box 1. The movable plate 10 can drive the sliding sleeve 14 to move on the heat exchange tube 4 through the cooperation of the sliding groove 11, the sliding seat 12 and the connecting rod 13, and then the sliding sleeve 14 can be used to scrape and clean the outer wall of the heat exchange tube 4 to prevent scale from adhering to the outer wall of the heat exchange tube 4, thereby improving the waste heat recovery efficiency.

[0043] Furthermore, as another specific implementation of the present invention, the present invention provides a waste steam recovery device for a deaerator.

[0044] Specifically, Figure 3 It is shown that a water inlet pipe 7 is arranged at the upper portion of the left side wall of the recovery box 1 , and a drain pipe 8 is arranged at the lower portion of the right side wall of the recovery box 1 .

[0045] In the utility model, cold water is added into the recovery box 1 for convenience, and high-temperature water in the recovery box 1 is discharged after the heat exchange is completed.

[0046] Furthermore, as a specific implementation of the present invention, the present invention provides a waste steam recovery device for a deaerator.

[0047] Specifically, Figure 1 It is shown that the driving motor 15 is fixedly mounted on the left outer wall of the recovery box 1 , and the driving end of the driving motor 15 is fixedly connected to one end of the threaded rod 9 .

[0048] In the present invention, in order to ensure that the driving motor 15 can drive the threaded rod 9 to rotate stably.

[0049] Furthermore, as a specific implementation of the present invention, the present invention provides a waste steam recovery device for a deaerator.

[0050] Specifically, Figure 3 It is given that a guide rod is installed inside the recovery box 1, and the movable plate 10 is slidably connected to the guide rod.

[0051] In the present invention, in order to guide the sliding of the moving plate 10 , the sliding stability of the moving plate 10 is improved.

[0052] Furthermore, as a specific implementation of the present invention, the present invention provides a waste steam recovery device for a deaerator.

[0053] Specifically, Figure 3 It is shown that the slide groove 11 is a T-slot structure, and the slide seat 12 is adapted to the slide groove 11 .

[0054] In the present invention, the sliding stability of the slide seat 12 in the slide groove 11 is improved.

[0055] Furthermore, as a specific implementation of the present invention, the present invention provides a waste steam recovery device for a deaerator.

[0056] Specifically, Figure 4 It is shown that an annular groove 16 is formed on the inner wall of the sliding sleeve 14 , a ball 17 is embedded in the annular groove 16 , and an outer wall of the ball 17 abuts against an outer wall of the heat exchange tube 4 .

[0057] Flexible edges 18 are installed at the ports at both ends of the heat exchange tube 4 , and the flexible edges 18 are in contact with the outer wall of the heat exchange tube 4 .

[0058] In the utility model, the sliding friction between the sliding sleeve 14 and the heat exchange tube 4 can be converted into rolling friction by cooperating with the annular groove 16 and the ball 17 arranged on the inner wall of the sliding sleeve 14, thereby reducing the friction between the sliding sleeve 14 and the heat exchange tube 4 and reducing wear. The outer wall of the heat exchange tube 4 is scraped and cleaned by the flexible edge 18 to avoid hard contact between the sliding sleeve 14 and the heat exchange tube 4, further reducing wear and extending the service life of the heat exchange tube 4.

[0059] Working principle: by vertically arranging a left vertical pipe 3 and a right vertical pipe 5 on the left and right sides of the recovery box 1, a plurality of heat exchange tubes 4 are obliquely connected inside the recovery box 1. When the exhaust steam enters the right vertical pipe 5 and is transmitted to the right, the water in the recovery box 1 can be heated. At the same time, the water condenses and slides to the left side and is discharged and collected from the left vertical pipe 3. The heat inside the exhaust steam can be recycled and the water can be separated more efficiently. The threaded rod 9 can be driven to rotate by the driving motor 15. The threaded rod 9 drives the moving plate 10 to move horizontally inside the recovery box 1. The moving plate 10 can drive the sliding sleeve 14 to move on the heat exchange tube 4 through the slide groove 11, the sliding seat 12 and the connecting rod 13. Then, the sliding sleeve 14 can be used to scrape and clean the outer wall of the heat exchange tube 4 to prevent scale from adhering to the outer wall of the heat exchange tube 4, thereby improving the waste heat recovery efficiency.

[0060] The above is only a preferred embodiment of the present invention, and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with this patent can make some changes or modifications to equivalent embodiments of equivalent changes using the technical content suggested above without departing from the scope of the technical solution of the present invention. The implementation schemes in the above embodiments can also be further combined or replaced. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the present invention.

Claims

1. A deaerator exhaust steam recovery device, comprising: Recycling bin (1); Heat exchange components used for recovering waste heat from exhaust steam; The invention is characterized in that the heat exchange component comprises a left vertical pipe (3) and a right vertical pipe (5) which are vertically fixedly installed inside the recovery box (1); a plurality of heat exchange pipes (4) are obliquely connected between the left vertical pipe (3) and the right vertical pipe (5); a steam inlet pipe (2) is fixedly connected to the side wall of the left vertical pipe (3); an air outlet pipe (6) is fixedly connected to the side wall of the right vertical pipe (5); and both the steam inlet pipe (2) and the air outlet pipe (6) penetrate to the outside of the recovery box (1); It also comprises a cleaning component for cleaning the surface of the heat exchange tube (4).

2. The exhaust steam recovery device of a deaerator according to claim 1, characterized in that: The cleaning component comprises a threaded rod (9) rotatably mounted inside a recovery box (1) and a driving motor (15) arranged on the outer wall of the recovery box (1) for driving the threaded rod (9) to rotate, a movable plate (10) being threadedly connected to the threaded rod (9), a sliding groove (11) being provided on the side wall of the movable plate (10) relative to the heat exchange tube (4), a sliding seat (12) being slidably mounted inside the sliding groove (11), a connecting rod (13) being fixedly mounted on the side wall of the sliding seat (12), a sliding sleeve (14) being fixedly mounted on the end of the connecting rod (13) away from the sliding seat (12), and the sliding sleeve (14) being slidably mounted on the outer wall of the heat exchange tube (4).

3. The exhaust steam recovery device of a deaerator according to claim 1, characterized in that: A water inlet pipe (7) is provided at the upper portion of the left side wall of the recovery box (1), and a drain pipe (8) is provided at the lower portion of the right side wall of the recovery box (1).

4. The exhaust steam recovery device of a deaerator according to claim 2, characterized in that: The driving motor (15) is fixedly mounted on the left outer wall of the recovery box (1), and the driving end of the driving motor (15) is fixedly connected to one end of the threaded rod (9).

5. The exhaust steam recovery device of a deaerator according to claim 2, characterized in that: A guide rod is installed inside the recovery box (1), and the movable plate (10) is slidably connected to the guide rod.

6. The exhaust steam recovery device of a deaerator according to claim 2, characterized in that: The slide groove (11) is a T-shaped groove structure, and the slide seat (12) is adapted to the slide groove (11).

7. The exhaust steam recovery device of a deaerator according to claim 2, characterized in that: An annular groove (16) is provided on the inner wall of the sliding sleeve (14), a ball (17) is embedded in the annular groove (16), and the outer wall of the ball (17) abuts against the outer wall of the heat exchange tube (4).

8. The exhaust steam recovery device of a deaerator according to claim 1, characterized in that: Flexible edges (18) are installed at the ports at both ends of the heat exchange tube (4), and the flexible edges (18) are in contact with the outer wall of the heat exchange tube (4).

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