Heat recovery device of deaerator

Abstract

The utility model discloses a heat recovery device of a deaerator, which relates to the technical field of deaerators and comprises a deaerating water tank, the deaerator is arranged above the deaerating water tank, a steam exhaust port is arranged at the upper end of the deaerator, a heat recovery box is arranged on one side of the deaerating water tank, and a heat exchanger is arranged on the other side of the deaerating water tank. The upper portion of the heat recycling box is connected with a steam exhaust port through an outer conveying pipe, an inner conveying pipe extending into the heat recycling box is arranged at the lower end of the outer conveying pipe, two flow dividing pipes are arranged on the side wall of the inner conveying pipe, a water storage tank is arranged at one ends of the flow dividing pipes, and water storage cavities are formed in the two sides of the interior of the water storage tank. A second control valve is arranged on the outer wall of one end of the flow dividing pipe. The problems that in the using process of an existing deaerator heat recovery device, much water scale can be gathered on a spiral pipe, dismounting and cleaning need to be conducted, heat cannot be recovered normally in the dismounting and cleaning process, and then the heat recovery efficiency is affected are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of deaerators, in particular to a heat recovery device for a deaerator. Background Art

[0002] The dissolved oxygen and other gases separated from the water by the deaerator are continuously discharged from the exhaust port on the top of the deaerator. The temperature of this gas is relatively high (about 190°C) and can be recycled through the heat recovery device.

[0003] For example, the announcement number is CN219244333U, named "A deaerator steam heat recovery device", which includes a deaerator main body, two exhaust pipes are fixedly installed on the upper side of the deaerator main body, and the upper sides of the two exhaust pipes are respectively fixedly connected with L-shaped pipes, and the two L-shaped pipes are fixedly installed on the opposite sides of the three-way joints, and a delivery pipe is fixedly installed on the upper side of the three-way joint. The outer wall sliding sleeve of the delivery pipe is provided with an insulation sleeve, and the side of the delivery pipe away from the deaerator main body is fixedly connected with a box body; the steam inside the deaerator main body can be transported to the delivery pipe through the two L-shaped pipes, so that the steam in the delivery pipe is transported to the spiral pipe, and then the water inside the box body is heated, and the spiral pipe can allow the steam to better exert its residual heat inside the box body, and the insulation sleeve on the delivery pipe can better insulate the steam, further heating the water inside the box body, so that the steam can be better recycled.

[0004] When the existing deaerator heat recovery device is in use, a lot of scale will accumulate on the spiral tube, which needs to be disassembled and cleaned. During the disassembly and cleaning, heat cannot be recovered normally, which affects the heat recovery efficiency. Therefore, it does not meet the existing needs. A deaerator heat recovery device is proposed. Utility Model Content

[0005] The purpose of the present utility model is to provide a heat recovery device for a deaerator, so as to solve the problem in the prior art of the deaerator heat recovery device that during use, a lot of scale will accumulate on the spiral tube, which needs to be disassembled and cleaned. During the disassembly and cleaning, heat cannot be recovered normally, thereby affecting the heat recovery efficiency.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a heat recovery device for a deaerator, comprising: a deaerator water tank, a deaerator is arranged above the deaerator water tank, an exhaust port is arranged at the upper end of the deaerator, a heat recovery box is arranged on one side of the deaerator water tank, the upper part of the heat recovery box is connected to the exhaust port through an external delivery pipe, an inner delivery pipe extending into the heat recovery box is arranged at the lower end of the external delivery pipe, two diversion pipes are arranged on the side wall of the inner delivery pipe, a water storage tank is arranged at one end of the diversion pipe, water storage chambers are arranged on both sides of the interior of the water storage tank, a second control valve is arranged on the outer wall of one end of the diversion pipe, and a heat transfer pipeline is arranged inside the water storage chamber.

[0007] Preferably, the heat transfer pipeline includes a serpentine tube, one end of which is connected to the valve port of the second control valve via a mounting flange.

[0008] Preferably, a discharge cavity is provided between the water storage cavities, a discharge assembly is provided inside the discharge cavity, and the discharge assembly includes butt joints symmetrically provided on the left and right, and one end of the butt joint is connected to the serpentine pipe through a butt flange.

[0009] Preferably, a third control valve is provided between the butt-jointed pipes, and an external discharge pipe extending to the outside of the heat recovery box is provided at a middle position of the third control valve.

[0010] Preferably, a water outlet and a water inlet are provided on the front end surface of the water storage chamber.

[0011] Preferably, a first control valve is mounted on the outer wall of the outer delivery pipe via a flange.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. The utility model delivers the steam discharged from the exhaust port into the heat recovery box through the outer delivery pipe and the inner delivery pipe, and diverts the heat to the serpentine pipes in each water storage chamber through the diversion pipe. When the hot steam is transported, the heat in the pipe is transferred to the water in the water storage chamber, heating the water body and realizing heat recovery. When a serpentine pipe is disassembled and cleaned, the diversion pipe at the cleaning location can be closed through the first control valve, so that the heat can be recovered and utilized from another location, so that the replacement and maintenance processes can be carried out alternately without equipment shutdown, thereby improving heat recovery efficiency.

[0014] 2. The serpentine pipe is independently assembled. When replacing it, only the section of pipe located in the water storage chamber needs to be replaced. There is no need to replace the diversion pipe or the connecting pipe, which makes it more convenient for users to disassemble and assemble. If it is damaged, only the component at that location needs to be replaced, reducing replacement costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of the heat recovery box of the present utility model;

[0017] Figure 3 This is a schematic diagram of the shunt pipe structure of the utility model;

[0018] Figure 4 This is a schematic diagram of the serpentine tube structure of the utility model;

[0019] Figure 5 This is a schematic diagram of the discharge assembly structure of the present utility model;

[0020] In the figure: 1. Deaerator water tank; 101. Deaerator; 102. Exhaust port; 2. Heat recovery tank; 201. External delivery pipe; 202. First control valve; 203. Internal delivery pipe; 204. Diverter pipe; 205. Second control valve; 3. Water storage tank; 301. Water storage chamber; 302. Discharge chamber; 303. Drain port; 304. Water inlet; 4. Heat transfer pipeline; 401. Serpentine pipe; 402. Assembly flange; 5. Discharge assembly; 501. Third control valve; 502. External discharge pipe; 503. Docking pipe; 504. Docking flange. 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 、 Figure 2 、 Figure 3 、 Figure 4 , the utility model provides an embodiment: a heat recovery device for a deaerator, comprising: a deaerator water tank 1, a deaerator 101 is arranged above the deaerator water tank 1, an exhaust port 102 is arranged at the upper end of the deaerator 101, a heat recovery tank 2 is arranged on one side of the deaerator water tank 1, the upper part of the heat recovery tank 2 is connected to the exhaust port 102 through an external delivery pipe 201, a first control valve 202 is installed on the outer wall of the external delivery pipe 201 through a flange, and an inner delivery pipe 203 extending into the heat recovery tank 2 is provided at the lower end of the external delivery pipe 201, the high-temperature steam in the deaerator 101 is discharged upward from the exhaust port 102 into the outer delivery pipe 201, the first control valve 202 controls the opening and closing state of the pipeline, and in the open state, the steam enters the inner delivery pipe 203 along the external delivery pipe 201 for subsequent steam diversion operation;

[0023] Two shunt pipes 204 are provided on the side wall of the inner delivery pipe 203. A water storage tank 3 is provided at one end of the shunt pipe 204. Water storage chambers 301 are provided on both sides of the water storage tank 3. A second control valve 205 is provided on the outer wall of one end of the shunt pipe 204. A heat transfer pipe 4 is provided inside the water storage chamber 301. The heat transfer pipe 4 includes a serpentine pipe 401. One end of the serpentine pipe 401 is connected to the valve port of the second control valve 205 through an assembly flange 402. The exhaust port 102 is discharged through the outer delivery pipe 201 and the inner delivery pipe 203. The steam is sent into the heat recovery box 2, and the heat is diverted to the serpentine pipes 401 in each water storage chamber 301 through the diverter pipe 204. When the hot steam is transported, the heat in the pipe is transferred to the water in the water storage chamber 301, heating the water body and realizing heat recovery. When a serpentine pipe 401 is disassembled and cleaned, the diverter pipe 204 at the cleaning location can be closed through the first control valve 202, so that the heat can be recovered and reused from another location, so that the replacement and maintenance processes can be carried out alternately without stopping the equipment, thereby improving the heat recovery efficiency.

[0024] In addition, the serpentine tube 401 is independently assembled. When replacing it, only the section of the tube located in the water storage chamber 301 needs to be replaced, without having to replace the diverter tube 204 or the connecting tube 503. This makes disassembly and assembly more convenient for users. If it is damaged, only the component at that location needs to be replaced, reducing replacement costs.

[0025] Furthermore, a drain outlet 303 and a water inlet 304 are provided on the front end face of the water storage chamber 301; the heated water is discharged to the outside through the drain outlet 303, and then new water is transported into the water storage chamber 301 through the water inlet 304 for a new round of heating.

[0026] See also Figure 2 、 Figure 5 , a discharge chamber 302 is opened between the water storage chambers 301, and a discharge assembly 5 is arranged inside the discharge chamber 302. The discharge assembly 5 includes a bilaterally symmetrical butt joint pipe 503, and one end of the butt joint pipe 503 is connected to the serpentine pipe 401 through a butt flange 504. A third control valve 501 is arranged between the butt joint pipes 503, and an external discharge pipe 502 extending to the outside of the heat recovery box 2 is arranged at the middle position of the third control valve 501; the discharge chamber 302 is used to install a collection pipeline, wherein the butt joint pipe 503 is used to connect Connect the serpentine pipe 401 so that the steam in the serpentine pipe 401 can enter the third control valve 501 through the connecting pipe 503. When the third control valve 501 is open, the steam enters the external discharge pipe 502 and is discharged to the outside of the equipment along the external discharge pipe 502. When one serpentine pipe 401 is under maintenance, the pipe at that location is closed, and the steam in the other serpentine pipe 401 can still be discharged to the outside through the third control valve 501 and the external discharge pipe 502, so that the maintenance does not affect the normal operation of another location.

[0027] Furthermore, two control ends are provided at the left and right ends of the third control valve 501 respectively, for separately and independently controlling the left and right connecting pipes 503 .

[0028] Working principle: When in use, the high-temperature steam in the deaerator 101 is discharged upward from the exhaust port 102 into the external delivery pipe 201. The first control valve 202 controls the opening and closing state of the pipeline. In the open state, the steam enters the internal delivery pipe 203 along the external delivery pipe 201, and the heat is diverted to the serpentine pipes 401 in each water storage chamber 301 through the diverter pipe 204. When the hot steam is transported, the heat in the pipe is transferred to the water in the water storage chamber 301, heating the water body. The butt joint 503 is used to connect the serpentine pipe 401, so that the steam in the serpentine pipe 401 can enter the third control valve 501 through the butt joint 503. When the third control valve 501 is in the open state, the steam enters the external discharge pipe 502 and is sent to the outside of the equipment along the external discharge pipe 502.

[0029] When disassembling and cleaning a serpentine pipe 401, the diverter pipe 204 at the cleaning location is closed by the first control valve 202, and the serpentine pipe 401 at the location is independently disassembled and removed.

[0030] 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 heat recovery device for a deaerator, comprising a deaerator water tank (1), a deaerator (101) disposed above the deaerator water tank (1), and a steam exhaust port (102) disposed at the upper end of the deaerator (101), characterized in that: A heat recovery tank (2) is provided on one side of the deoxygenated water tank (1); the upper portion of the heat recovery tank (2) is connected to the exhaust port (102) via an external delivery pipe (201); an inner delivery pipe (203) extending into the heat recovery tank (2) is provided at the lower end of the external delivery pipe (201); two branch pipes (204) are provided on the side wall of the inner delivery pipe (203); a water storage tank (3) is provided at one end of the branch pipe (204); water storage chambers (301) are provided on both sides of the water storage tank (3); a second control valve (205) is provided on the outer wall of one end of the branch pipe (204); and a heat transfer pipeline (4) is provided inside the water storage chamber (301).

2. The heat recovery device for a deaerator according to claim 1, characterized in that: The heat transfer pipeline (4) comprises a serpentine tube (401), one end of which is connected to the valve port of the second control valve (205) via a mounting flange (402).

3. The heat recovery device for a deaerator according to claim 1, characterized in that: A discharge cavity (302) is provided between the water storage cavities (301), and a discharge assembly (5) is provided inside the discharge cavity (302). The discharge assembly (5) includes a butt joint pipe (503) that is symmetrically arranged on both sides, and one end of the butt joint pipe (503) is connected to the serpentine pipe (401) through a butt joint flange (504).

4. The heat recovery device for a deaerator according to claim 3, characterized in that: A third control valve (501) is provided between the butting pipes (503), and an external discharge pipe (502) extending to the outside of the heat recovery box (2) is provided at a middle position of the third control valve (501).

5. The heat recovery device for a deaerator according to claim 1, characterized in that: The front end surface of the water storage chamber (301) is provided with a water outlet (303) and a water inlet (304).

6. The heat recovery device for a deaerator according to claim 1, characterized in that: A first control valve (202) is mounted on the outer wall of the outer delivery pipe (201) via a flange.

Images