High-efficiency deaerator for boiler
Patent Information
- Application Number
- CN202522471934.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-21
- Publication Date
- 2026-10-09
- Estimated Expiration
- 2035-11-21
AI Technical Summary
[0003]目前现有的除氧器在使用时，氧气和一部分水汽会被持续到排出，而目前通常是直接排入空气中，但是排出的氧气和水汽内含有大量的热量，目前通常是利用换热器将氧气和水汽中的大部分热量吸收，用于对进入除氧器内的水进行预加热提高除氧的效果或作为他用，但是换热器在使用时，高温氧气和高温水汽与换热器内的换热管接触面比较小，导致对高温氧气和高温水汽的热量回收有限
通过将高温氧气和水汽直接注入换热箱内的水中，可以增加水与高温氧气和水汽的接触面积，而且通过回收机构和上水机构的配合可以继续将氧气和水汽中的热量吸收，从而可以增加水与高温氧气和水汽的换热效率，并且上水机构喷洒下来的水可以对换热箱内的水产生振荡作用，使得换热箱内的水温更加均匀，而吸收了热量的水注入除氧器本体中，可以降低除氧器本体内水的加热时间，降低能源的消耗；
Smart Images
Figure CN224837346U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of deaerator technology, specifically a high-efficiency deaerator for boilers. Background Technology
[0002] The deaerator is a crucial piece of equipment in a boiler system. Its main function is to remove dissolved oxygen and other non-condensable gases from the boiler feedwater to ensure feedwater quality, prevent equipment corrosion, improve thermal efficiency, and ensure the safe and stable operation of the boiler. Deaeration in a deaerator mainly occurs within a closed container. When any gas exists simultaneously on the water surface, its solubility is directly proportional to its partial pressure. As the water temperature rises, the partial pressure of water vapor gradually increases, while the partial pressures of air and oxygen gradually decrease. When the water temperature reaches the saturation temperature under the deaerator's pressure, the space above the water surface is almost entirely filled with water vapor. At this point, the partial pressures of dissolved oxygen and other gases in the water approach zero, thus being effectively removed.
[0003] Currently, existing deaerators continuously discharge oxygen and some water vapor, which is usually directly released into the air. However, the discharged oxygen and water vapor contain a large amount of heat. Currently, heat exchangers are used to absorb most of the heat from the oxygen and water vapor, which is then used to preheat the water entering the deaerator to improve the deaeration effect or for other purposes. However, when the heat exchanger is in use, the contact area between the high-temperature oxygen and water vapor and the heat exchange tubes inside the heat exchanger is relatively small, resulting in limited heat recovery from the high-temperature oxygen and water vapor. Utility Model Content
[0004] The purpose of this invention is to provide a high-efficiency deaerator for boilers to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: A high-efficiency deaerator for boilers includes a deaerator body, a heat exchange box detachably connected to the top of the deaerator tower of the deaerator body, an air inlet pipe detachably connected to the oxygen discharge pipe at the top of the deaerator tower and fixed through the bottom of the heat exchange box, an outlet pipe detachably connected to the water inlet on the outside of the deaerator tower and fixed through one end of the heat exchange box, an exhaust pipe detachably connected to the top of the heat exchange box, a water supply mechanism inside the heat exchange box, and a recovery mechanism inside the heat exchange box and above the water supply mechanism. The heat exchanger box has an internal shell, which is connected to the air inlet pipe. Multiple air outlet pipes are fixed through the bottom of the shell at equal intervals.
[0006] Furthermore, both sides of the shell are fixedly connected to a fixing plate that is fixedly connected to the heat exchange box, and inside the heat exchange box, in the middle of the outlet pipe, is a mesh plate that penetrates the outlet pipe.
[0007] Furthermore, the water supply mechanism includes a second shell located inside the heat exchange box and above the first shell. Multiple shower heads are evenly spaced at the bottom of the second shell, and the interior of the shower heads is connected to the interior of the second shell. A water inlet pipe that is fixed through and fixed to the heat exchange box is passed through one end of the second shell.
[0008] Furthermore, both sides of the second shell are fixedly connected to a second fixing plate that is fixedly connected to the heat exchange box.
[0009] Furthermore, the recovery mechanism includes a collection hood fixedly connected inside the heat exchange box and located above the shell 2. A coil is provided below the collection hood and below multiple shower heads. One end of the coil is fixedly connected to a connecting pipe 1 that penetrates and is fixed to the top of the collection hood, and the other end of the coil is fixedly connected to a connecting pipe 2 that is connected to the exhaust pipe.
[0010] Furthermore, the casing 1, casing 2, shower head, etc. are all made of metal and coated with an anti-corrosion coating.
[0011] Furthermore, two symmetrical support frames are fixedly connected to the outside of the water tank of the deaerator body, and a mounting bracket that can be detachably connected to the support frame is fixedly connected to the bottom of the heat exchange box corresponding to the support frame.
[0012] Compared with the prior art, the beneficial effects of this utility model are: By directly injecting high-temperature oxygen and water vapor into the water inside the heat exchange box, the contact area between the water and the high-temperature oxygen and water vapor can be increased. Furthermore, through the cooperation of the recovery mechanism and the water supply mechanism, the heat in the oxygen and water vapor can be further absorbed, thereby increasing the heat exchange efficiency between the water and the high-temperature oxygen and water vapor. In addition, the water sprayed down by the water supply mechanism can create an oscillation effect on the water inside the heat exchange box, making the water temperature inside the heat exchange box more uniform. The water that has absorbed heat is injected into the deaerator body, which can reduce the heating time of the water inside the deaerator body and reduce energy consumption. By setting multiple shower heads, the water jets can be made finer, and the sprayed water jets will come into contact with the oxygen and water vapor floating in the heat exchange box again. At this time, some of the heat in the oxygen and water vapor can be absorbed again, thus achieving secondary heat recovery. Through the collection hood and coil, as the bubbles break, the pressure inside the heat exchange box gradually increases, allowing oxygen and water vapor to enter the coil under the action of the collection hood. Part of the water jet sprayed from the shower head will directly spray onto the coil, and the heat absorbed by the coil will be carried away by the water sprayed from the shower head, thus achieving a third heat recovery. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the interior of the heat exchange box in this utility model; Figure 3 This is a cross-sectional view of the heat exchanger box in this utility model; Figure 4 This is a schematic diagram of the water supply mechanism in this utility model; Figure 5 This is a schematic diagram of the recycling mechanism in this utility model.
[0014] In the diagram: 1. Deaerator body; 2. Heat exchange box; 21. Inlet pipe; 22. Outlet pipe; 23. Exhaust pipe; 24. Shell 1; 25. Outlet pipe; 26. Mesh plate; 27. Fixing plate 1; 28. Mounting bracket; 3. Water supply mechanism; 31. Shell 2; 32. Shower head; 33. Inlet pipe; 34. Fixing plate 2; 4. Recovery mechanism; 41. Collection hood; 42. Coil; 43. Connecting pipe 1; 44. Connecting pipe 2. Detailed Implementation
[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0016] Please see Figure 1 - Figure 5 In this embodiment of the present invention, a high-efficiency deaerator for boilers includes a deaerator body 1. A heat exchange box 2 is detachably connected to the top of the deaerator tower of the deaerator body 1. An air inlet pipe 21, which is detachably connected to the oxygen discharge pipe at the top of the deaerator tower, is fixed through the bottom of the heat exchange box 2. An outlet pipe 22, which is detachably connected to the water inlet on the outside of the deaerator tower, is fixed through one end of the heat exchange box 2. An exhaust pipe 23 is fixed through one end of the top of the heat exchange box 2. A water supply mechanism 3 is provided inside the heat exchange box 2. A recovery mechanism 4 is provided inside the heat exchange box 2 and above the water supply mechanism 3. A shell 24 is provided inside the heat exchange box 2. The shell 24 is connected to the air inlet pipe 21. Multiple air outlet pipes 25 are fixed through the bottom of the shell 24 at equal intervals.
[0017] Specifically, the heat exchange box 2 is first installed on top of the deaerator tower of the deaerator body 1, and the air inlet pipe 21 is connected to the oxygen discharge pipe on the deaerator tower by bolts. The water outlet pipe 22 is connected to the water inlet on the deaerator tower by bolts. By connecting the external water source to the water supply mechanism 3, water can be evenly sprayed into the interior of the heat exchange box 2 until the water in the heat exchange box 2 submerges the shell 24. At the same time, the oxygen discharge pipe on the deaerator tower is opened by the switch valve. At this time, high-temperature oxygen and water vapor enter the shell 24 through the air inlet pipe 21 and are sprayed from the bottom of multiple air outlet pipes 25. Since the outlet pipe 25 is submerged in the water inside the heat exchange box 2, high-temperature oxygen and water vapor are injected into the water. The high temperature of the oxygen and water vapor is absorbed by the water, raising its temperature. The heated water is then discharged through the outlet pipe 22 into the deaerator tower for deoxygenation. The deoxygenated water is collected in the water tank of the deaerator body 1, which can then supply water to the boiler (the deaerator body 1 is existing technology; the specific deoxygenation process will not be elaborated here). Because air bubbles are generated when oxygen and water vapor are injected into the water inside the heat exchange box 2, although most of the high temperature of the oxygen and water vapor in the bubbles is absorbed... Water is absorbed, but the oxygen and water vapor inside the bubbles still have a high temperature. When the bubbles rise to the water surface, they break, releasing the oxygen and water vapor. As the pressure component inside heat exchanger 2 increases, the floating oxygen and water vapor enter the recovery mechanism 4. The water sprayed by the water supply mechanism 3 absorbs the residual heat from the oxygen and water vapor entering the recovery mechanism 4 again, until the oxygen and water vapor are discharged from heat exchanger 2 (the high-temperature water vapor liquefies after cooling, and most of the liquefied water mixes with the water in heat exchanger 2, while a small amount of water remains in the recovery mechanism 4). The device increases the contact area between the water and the high-temperature oxygen and water vapor by directly injecting high-temperature oxygen and water vapor into the water in the heat exchange box 2. Furthermore, the combined action of the recovery mechanism 4 and the water supply mechanism 3 allows for the continued absorption of heat from the oxygen and water vapor, thereby increasing the heat exchange efficiency between the water and the high-temperature oxygen and water vapor. In addition, the water sprayed by the water supply mechanism 3 creates an oscillation effect on the water in the heat exchange box 2, making the water temperature in the heat exchange box 2 more uniform. The water that has absorbed heat is then injected into the deaerator body 1, which reduces the heating time of the water in the deaerator body 1 and reduces energy consumption. Example 1
[0018] like Figure 3 As shown, in this embodiment, both sides of the housing 24 are fixedly connected to the fixing plate 27 which is fixedly connected to the heat exchange box 2, and the inside of the heat exchange box 2 and the middle of the air outlet pipe 25 are fixedly connected to the mesh plate 26 which penetrates the air outlet pipe 25.
[0019] In this embodiment, the mesh plate 26 can decompose the bubbles generated by oxygen and water vapor in the injected water into smaller bubbles, thereby allowing the water to absorb the heat of oxygen and water vapor more quickly. Example 2
[0020] like Figure 2 and Figure 4 As shown, in this embodiment, the water supply mechanism 3 includes a second housing 31 disposed inside the heat exchange box 2 and located above the first housing 24. Multiple shower heads 32 are evenly spaced at the bottom of the second housing 31. The interior of the shower heads 32 is connected to the interior of the second housing 31. One end of the second housing 31 is fixedly connected to a water inlet pipe 33 that is fixedly connected to the heat exchange box 2. Both sides of the second housing 31 are fixedly connected to a second fixing plate 34 that is fixedly connected to the heat exchange box 2.
[0021] In this embodiment, by injecting external water into the housing 2 31 and spraying it out from multiple shower heads 32, the water jets sprayed out by the shower heads 32 can be finer. The sprayed water jets will come into contact with the oxygen and water vapor floating in the heat exchange box 2 again. At this time, some of the heat in the oxygen and water vapor can be absorbed again, thereby realizing secondary heat recovery. Moreover, the sprayed water jets can generate an oscillation effect on the water in the heat exchange box 2, making the water temperature in the heat exchange box 2 more uniform. Example 3
[0022] like Figure 2 and Figure 5 As shown, in this embodiment, the recycling mechanism 4 includes a collection cover 41 fixedly connected inside the heat exchange box 2 and located above the housing 31. A coil 42 is provided below the collection cover 41 and below the multiple shower heads 32. One end of the coil 42 is fixedly connected to a connecting pipe 43 that penetrates and is fixed to the top of the collection cover 41. The other end of the coil 42 is fixedly connected to a connecting pipe 44 that is connected to the exhaust pipe 23.
[0023] In this embodiment, as the bubbles break, the pressure inside the heat exchange box 2 gradually increases, causing oxygen and water vapor to enter the coil 42 under the action of the collection hood 41. Since the coil 42 is located below multiple shower heads 32, part of the water jets sprayed by the shower heads 32 will directly spray onto the coil 42, and the heat absorbed by the coil 42 will be carried away by the water sprayed by the shower heads 32, thereby achieving the third heat recovery. Example 4
[0024] like Figure 2 As shown, in this embodiment, the first shell 24, the second shell 31, the shower head 32, etc. are all made of metal and coated with an anti-corrosion coating. Two symmetrical support frames are fixedly connected to the outside of the water tank of the deaerator body 1. The bottom of the heat exchange box 2 is fixedly connected to the support frame with a mounting bracket 28 that can be detachably connected to the support frame.
[0025] In this embodiment, by making the first housing 24, the second housing 31, the shower head 32, etc., all of them metal, the heat in the oxygen and water vapor can be transferred better. The heat exchange box 2 can be fixed to the top of the deaerator tower of the deaerator body 1 by the mounting bracket 28 and the support bracket.
[0026] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0027] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A high-efficiency deaerator for boilers, comprising a deaerator body (1), characterized in that, The deaerator body (1) has a heat exchange box (2) detachably connected to the top of the deaerator tower. The bottom of the heat exchange box (2) is fixed with an air inlet pipe (21) detachably connected to the oxygen discharge pipe at the top of the deaerator tower. One end of the heat exchange box (2) is fixed with an outlet pipe (22) detachably connected to the water inlet on the outside of the deaerator tower. One end of the top of the heat exchange box (2) is fixed with an exhaust pipe (23). The heat exchange box (2) is equipped with a water supply mechanism (3). The heat exchange box (2) is equipped with a recovery mechanism (4) located inside the heat exchange box (2) and above the water supply mechanism (3). The heat exchange box (2) has a shell (24) inside, which is connected to the air inlet pipe (21). Multiple air outlet pipes (25) are fixed through the bottom of the shell (24) at equal intervals.
2. The high-efficiency deaerator for boilers according to claim 1, characterized in that, Both sides of the shell (24) are fixedly connected to the fixing plate (27) which is fixedly connected to the heat exchange box (2). Inside the heat exchange box (2) and in the middle of the air outlet pipe (25), there is a mesh plate (26) that passes through the air outlet pipe (25).
3. The high-efficiency deaerator for boilers according to claim 2, characterized in that, The water supply mechanism (3) includes a second shell (31) located inside the heat exchange box (2) and above the first shell (24). Multiple shower heads (32) are evenly spaced at the bottom of the second shell (31). The interior of the shower heads (32) is connected to the interior of the second shell (31). One end of the second shell (31) is fixed with a water inlet pipe (33) that is fixed through the heat exchange box (2).
4. The high-efficiency deaerator for boilers according to claim 3, characterized in that, Both sides of the shell (31) are fixedly connected to the fixing plate (34) which is fixedly connected to the heat exchange box (2).
5. The high-efficiency deaerator for boilers according to claim 4, characterized in that, The recycling mechanism (4) includes a collection hood (41) fixedly connected inside the heat exchange box (2) and located above the shell (31). A coil (42) is provided below the collection hood (41) and below multiple shower heads (32). One end of the coil (42) is fixedly connected to a connecting pipe (43) that penetrates and is fixed to the top of the collection hood (41). The other end of the coil (42) is fixedly connected to a connecting pipe (44) that is connected to the exhaust pipe (23).
6. The high-efficiency deaerator for boilers according to claim 5, characterized in that, The first casing (24), the second casing (31), and the shower head (32) are all made of metal and coated with an anti-corrosion coating.
7. The high-efficiency deaerator for boilers according to claim 6, characterized in that, Two symmetrical support frames are fixedly connected to the outside of the water tank of the deaerator body (1), and a mounting bracket (28) that can be detachably connected to the support frame is fixedly connected to the bottom of the heat exchange box (2) corresponding to the support frame.