Dead steam recovery device

Abstract

The utility model relates to the technical field of heat recovery, and discloses a dead steam recovery device which comprises a bottom plate, one side of the top end of the bottom plate is fixedly connected with a deaerator through a vertical plate, the other side of the top end of the bottom plate is provided with a collecting mechanism, the collecting mechanism is provided with a heat exchange mechanism, and the heat exchange mechanism is provided with a rotating mechanism. The heat exchange mechanism comprises a heat exchange box, a water inlet pipe and a water outlet pipe are symmetrically and fixedly connected to the outer wall of the heat exchange box, a heat exchange pipe is rotationally connected to the heat exchange box and is spirally arranged, and the two ends of the heat exchange pipe are fixedly connected with a first connecting box and a second connecting box respectively; through all structures in the heat exchange mechanism, the effects that steam is fully cooled and condensed into water, and the cooling efficiency is improved are achieved, and the problems that a cooling path in a traditional dead steam recovery device is short, so that the steam cannot be fully cooled, and the cooling efficiency is low are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat recovery, in particular to an exhaust steam recovery device. Background Art

[0002] At present, thermal power plants and some other enterprises with their own boiler devices generally use thermal deaeration for boiler feed water, that is, steam is introduced into a deaerator filled with boiler feed water at a certain temperature to heat the boiler feed water in the deaerator to make the temperature close to the saturation temperature. Using Henry's law, the oxygen dissolved in the water is discharged into the upper space of the deaerator, and then the oxygen-containing steam in the deaerator is discharged into the atmosphere through the exhaust valve to achieve the purpose of deoxygenation. However, the oxygen-containing steam discharged into the atmosphere not only has a high heat content, but also causes the enterprise to lose a large amount of water resources due to the long-term discharge of the oxygen-containing steam. At the same time, the discharged steam will also cause certain thermal pollution to the environment. Therefore, it is very necessary to recycle and reuse the high-temperature exhaust steam discharged from the deaerator.

[0003] A Chinese patent provides a waste steam recovery and processing device for a thermal deaerator, with publication number CN220471597U, comprising a base plate, the upper side wall of which is fixedly mounted with a water storage heat exchanger, a base and a deaerator in sequence, the upper side wall of the base being fixedly mounted with a filter box, the upper side wall of the water storage heat exchanger being embedded with a steam buffer, the steam buffer being connected to the deaerator via a first connecting pipe, and the side wall of the filter box being connected to the water storage heat exchanger via a second connecting pipe.

[0004] When the condensed water in the water storage heat exchanger of the above device reaches a certain storage volume, the pressure pump is turned on for reuse. Since the condensed water is stored in the water storage heat exchanger for a period of time, its temperature is lower than the temperature when it flows out, and even lower than the temperature of the exhaust steam, so it can be used as cooling water again. In addition, this part of water can also be reheated into steam and allowed to enter the deaerator for deoxygenation, thereby realizing recycling and avoiding waste of water resources. However, during the cooling process, the cooling path is short, which will cause the steam to not be fully cooled, resulting in low cooling efficiency, and the heat exchange tube is fixed during cooling, so scale will form on its surface, thereby affecting heat transfer and further affecting heat exchange efficiency. Utility Model Content

[0005] The purpose of the utility model is to provide an exhaust steam recovery device to solve the problem that in the cooling process of the existing device, the cooling path is short, which may cause the steam to be unable to be fully cooled, resulting in low cooling efficiency.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: an exhaust steam recovery device, comprising a bottom plate, a deaerator fixedly connected to one side of the top of the bottom plate via a vertical plate, a collection mechanism provided on the other side of the top of the bottom plate, a heat exchange mechanism provided on the collection mechanism, and a rotating mechanism provided on the heat exchange mechanism;

[0007] The heat exchange mechanism includes a heat exchange box, the outer wall of which is symmetrically fixedly connected to a water inlet pipe and a water outlet pipe, the exchange box is rotatably connected to a heat exchange pipe, the heat exchange pipe is spirally arranged, and both ends of the heat exchange pipe are respectively fixedly connected to a first connecting box and a second connecting box, the top of the first connecting box is rotatably connected to a steam pipe, the steam pipe is fixedly connected to the exchange box through a column, and the steam pipe is fixedly connected to the deaerator.

[0008] Preferably, the rotating mechanism includes a dual-axis motor fixedly connected to the outer wall of the heat exchange box, the driving ends of the dual-axis motor are fixedly connected to the driving shaft, and the two driving shafts are fixedly connected to the main pulley at one end away from each other.

[0009] Preferably, the outer walls of the two drive shafts are rotatably connected to limit plates, and the two limit plates are fixedly connected to the heat exchange box.

[0010] Preferably, the rotating mechanism further comprises a secondary pulley fixedly connected to the outer wall of the first connecting box and the second connecting box, and the two groups of the secondary pulleys and the main pulley are connected by a belt.

[0011] Preferably, the collecting mechanism includes a drain box fixedly connected to the top of the base plate, a plurality of support columns are fixedly connected between the drain box and the heat exchange box, a drain pipe is fixedly connected to the top of the drain box, and the drain pipe is rotatably connected to the second connecting box.

[0012] Preferably, the collecting mechanism further comprises a drain pump fixedly connected to the drain tank on one side of the top of the bottom plate, and the drain pump is connected to the drain tank and the deaerator respectively through pipelines.

[0013] Preferably, a temperature sensor is fixedly connected to the outer wall of the heat exchange box, and heating rods are fixedly connected to both sides of the inner wall of the heat exchange box and are located opposite to the water inlet pipe and the water outlet pipe.

[0014] Preferably, stirring blades are fixedly connected to both sides of the outer wall of the heat exchange tube, and the length of the stirring blades is less than half of the distance between the heating rods.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1) The exhaust steam recovery device, through the interaction of various structures in the heat exchange mechanism, can ensure that the steam is fully contacted with the desalted water, and the steam is fully cooled and condensed into water, thereby improving the cooling efficiency and achieving more than 99% of the exhaust steam heat energy recovery. This saves energy, eliminates the noise pollution of the deaerator exhaust steam, and improves the plant environment.

[0017] 2) The exhaust steam recovery device can keep the heat exchange tube in a rotating state through the mutual cooperation of various structures in the rotating mechanism, thereby preventing scaling from forming on the heat exchange tube, preventing the impact on heat transfer, and avoiding affecting the heat exchange efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of an exhaust steam recovery device of the utility model;

[0019] Figure 2 This is a side view from another perspective of an exhaust steam recovery device of the present invention;

[0020] Figure 3 This is a diagram of the heat exchange mechanism and rotating mechanism of an exhaust steam recovery device of the utility model;

[0021] Figure 4 This is a diagram showing the heat exchange mechanism of an exhaust steam recovery device of the present utility model;

[0022] Figure 5 This is a diagram showing the rotating mechanism of an exhaust steam recovery device of the utility model.

[0023] In the figure: 1. Base plate; 2. Deaerator; 3. Heat exchange mechanism; 301. Heat exchange box; 302. Heat exchange pipe; 303. First connecting box; 304. Second connecting box; 305. Steam pipe; 306. Column; 4. Rotating mechanism; 401. Dual-axis motor; 402. Drive shaft; 403. Main pulley; 404. Limiting plate; 405. Secondary pulley; 5. Collecting mechanism; 501. Drain box; 502. Support column; 503. Drain pipe; 504. Drain pump; 6. Temperature sensor; 7. Heating rod; 8. Stirring blade. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] Example 1

[0026] Combine Figure 1-Figure 5 A waste steam recovery device includes a base plate 1, a deaerator 2 is fixedly connected to one side of the top of the base plate 1 through a vertical plate, a collecting mechanism 5 is provided on the other side of the top of the base plate 1, a heat exchange mechanism 3 is provided on the collecting mechanism 5, and a rotating mechanism 4 is provided on the heat exchange mechanism 3.

[0027] See Figure 3 and Figure 4 , it is further obtained that the heat exchange mechanism 3 includes a heat exchange box 301, the outer wall of the heat exchange box 301 is symmetrically fixedly connected with a water inlet pipe and a water outlet pipe, the heat exchange box is rotatably connected with a heat exchange tube 302, the heat exchange tube 302 is spirally arranged, and the two ends of the heat exchange tube 302 are respectively fixedly connected with a first connecting box 303 and a second connecting box 304, the top of the first connecting box 303 is rotatably connected with a steam pipe 305, the steam pipe 305 is fixedly connected to the exchange box through a column 306, and the steam pipe 305 is fixedly connected to the deaerator 2.

[0028] Specifically, since the heat exchange tube 302 is spirally arranged, the path for steam to pass can be extended, so that the steam can fully contact the desalted water and be fully cooled and condensed into water, thereby improving the cooling efficiency and achieving more than 99% of the exhaust steam heat energy recovery, which saves energy, eliminates the noise pollution of the deaerator exhaust steam, and improves the plant environment.

[0029] Example 2

[0030] See Figure 5 , and on the basis of Example 1, it is further obtained that the rotating mechanism 4 includes a dual-axis motor 401 fixedly connected to the outer wall of the heat exchange box 301, the driving ends of the dual-axis motor 401 are fixedly connected to the driving shaft 402, the two driving shafts 402 are fixedly connected to the main pulley 403 at one end away from each other, the outer walls of the two driving shafts 402 are rotatably connected to the limit plates 404, and the two limit plates 404 are fixedly connected to the heat exchange box 301, the rotating mechanism 4 also includes a secondary pulley 405 fixedly connected to the outer walls of the first connecting box 303 and the second connecting box 304, and the two sets of secondary pulleys 405 are connected to the main pulley 403 by belts.

[0031] Specifically, the dual-axis motor 401 rotates the drive shaft 402, the drive shaft 402 rotates the main pulley 403 and the secondary pulley 405 is rotated through the belt, so that the first connecting box 303 and the second connecting box 304 can rotate synchronously, and the heat exchange tube 302 can be rotated, thereby preventing scaling on the heat exchange tube 302 and avoiding affecting the heat exchange efficiency.

[0032] Example 3

[0033] See Figure 3 and Figure 4, and on the basis of Example 1 and Example 2, it is further obtained that the collecting mechanism 5 includes a drain tank 501 fixedly connected to the top of the base plate 1, a plurality of support columns 502 are fixedly connected between the drain tank 501 and the heat exchange box 301, a drain pipe 503 is fixedly connected to the top of the drain tank 501, and the drain pipe 503 is rotatably connected to the second connecting box 304. The collecting mechanism 5 also includes a drain pump 504 fixedly connected to the side of the drain tank 501 corresponding to the top of the base plate 1, and the drain pump 504 is respectively connected to the drain tank 501 and the deaerator 2 through pipelines.

[0034] Specifically, the fully cooled condensed water flows into the drain tank 501 through the second connecting box 304 and the water pipe 503, completing the collection of the condensed water. Thereafter, the condensed water is transported to the deaerator 2 through the drain pump 504 and the pipeline and reused, thereby realizing the recovery and reuse of the exhaust steam. This not only reduces energy consumption, but also saves boiler feed water or industrial water, and saves water treatment costs and tap water fees.

[0035] Example 4

[0036] See Figure 3 and Figure 4 , and on the basis of Example 1, it is further obtained that a temperature sensor 6 is fixedly connected to the outer wall of the heat exchange box 301, heating rods 7 are fixedly connected on both sides of the inner wall of the heat exchange box 301 and are corresponding to the positions of the water inlet pipe and the water outlet pipe, and stirring blades 8 are fixedly connected on both sides of the outer wall of the heat exchange tube 302, and the length of the stirring blades 8 is less than half of the distance between the heating rods 7.

[0037] Specifically, the temperature of the desalted water in the heat exchange box 301 can be detected by the temperature sensor 6, and the detection result can be fed back to the control panel. The control panel controls the heating rod 7 to perform heating treatment, thereby increasing the deaerator inlet water temperature and saving coal. The desalted water in the heat exchange box 301 can be stirred by the stirring blade 8, so that the desalted water can be evenly heated.

[0038] During actual operation, oxygen-containing steam is generated in the deaerator 2 and enters the first connecting box 303 through the steam pipe 305, and then enters the heat exchange tube 302. Since the heat exchange tube 302 is spirally arranged, the path length of the steam circulation can be increased, so that the steam and the desalted water can fully contact each other, so that the steam can be fully cooled to form condensed water, thereby improving the cooling efficiency.

[0039] When cooling steam and heating desalted water, the dual-shaft motor 401 can be started to rotate the drive shaft 402, thereby rotating the main pulley 403 and rotating the secondary pulley 405 through the belt, thereby rotating the second connection box 304 and the first connection box 303, thereby rotating the heat exchange tube 302. When the heat exchange tube 302 rotates, scaling can be prevented from forming on its surface, thereby always maintaining a high heat exchange efficiency.

[0040] The condensed water after cooling flows into the drain tank 501 and is collected and processed. At this time, the drain pump 504 is started to transport the condensed water in the drain tank 501 into the deaerator 2 and reuse it, thereby realizing the recovery and reuse of exhaust steam, which not only reduces energy consumption, but also saves boiler feed water or industrial water, and saves water treatment costs and tap water fees.

[0041] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An exhaust steam recovery device, comprising a base plate (1), a deaerator (2) fixedly connected to one side of the top of the base plate (1) via a vertical plate, characterized in that: A collecting mechanism (5) is provided on the other side of the top of the bottom plate (1), a heat exchange mechanism (3) is provided on the collecting mechanism (5), and a rotating mechanism (4) is provided on the heat exchange mechanism (3); The heat exchange mechanism (3) comprises a heat exchange box (301), the outer wall of the heat exchange box (301) is symmetrically fixedly connected with a water inlet pipe and a water outlet pipe, the heat exchange box is rotatably connected with a heat exchange pipe (302), the heat exchange pipe (302) is spirally arranged, the two ends of the heat exchange pipe (302) are respectively fixedly connected with a first connection box (303) and a second connection box (304), the top end of the first connection box (303) is rotatably connected with a steam pipe (305), the steam pipe (305) is fixedly connected to the exchange box through a column (306), and the steam pipe (305) is fixedly connected to the deaerator (2).

2. The exhaust steam recovery device according to claim 1, characterized in that: The rotating mechanism (4) comprises a dual-axis motor (401) fixedly connected to the outer wall of the heat exchange box (301), the driving ends of the dual-axis motor (401) are both fixedly connected to a driving shaft (402), and the two driving shafts (402) are both fixedly connected to a main pulley (403) at one end away from each other.

3. The exhaust steam recovery device according to claim 2, characterized in that: The outer walls of the two driving shafts (402) are both rotatably connected to the limiting plates (404), and the two limiting plates (404) are both fixedly connected to the heat exchange box (301).

4. The exhaust steam recovery device according to claim 3, characterized in that: The rotating mechanism (4) further comprises a secondary pulley (405) fixedly connected to the outer wall of the first connecting box (303) and the second connecting box (304); the two sets of the secondary pulleys (405) and the main pulley (403) are connected via a belt.

5. The exhaust steam recovery device according to claim 1, characterized in that: The collecting mechanism (5) comprises a drain box (501) fixedly connected to the top of the base plate (1); a plurality of support columns (502) are fixedly connected between the drain box (501) and the heat exchange box (301); a drain pipe (503) is fixedly connected to the top of the drain box (501); and the drain pipe (503) is rotatably connected to the second connection box (304).

6. The exhaust steam recovery device according to claim 5, characterized in that: The collecting mechanism (5) further comprises a drain pump (504) fixedly connected to the drain tank (501) at the top of the bottom plate (1), and the drain pump (504) is connected to the drain tank (501) and the deaerator (2) through pipelines.

7. The exhaust steam recovery device according to claim 1, characterized in that: The outer wall of the heat exchange box (301) is fixedly connected to a temperature sensor (6), and both sides of the inner wall of the heat exchange box (301) are fixedly connected to heating rods (7) and are positioned opposite to the water inlet pipe and the water outlet pipe.

8. The exhaust steam recovery device according to claim 1, characterized in that: Stirring blades (8) are fixedly connected to both sides of the outer wall of the heat exchange tube (302), and the length of the stirring blades (8) is less than half of the distance between the heating rods (7).

Images