Integrated noise reduction waste heat steam recycling and regenerating device

Abstract

The utility model discloses an integrated noise reduction waste heat steam recovery regeneration device which comprises a heat exchanger, an ejector and a sound absorption structure, the heat exchanger is connected with a waste heat recovery inlet, the ejector penetrates through the heat exchanger, one end of the ejector is connected with a high-pressure steam inlet, and the other end of the ejector is a mixed steam outlet. The heat exchanger is communicated with a nozzle of the ejector, and the sound absorption structure covers the outer side of the ejector. The ejector is integrated on the heat exchanger in a penetrating mode through the structural integration design, the outer surface of the ejector is coated with the sound absorption structure corresponding to the ejector in shape, and meanwhile a sound wave blocking barrier is formed by means of the sealing characteristic of a steam cavity in the heat exchanger. The rigid penetrating connection design of the ejector and the heat exchanger can eliminate the resonance phenomenon caused by traditional suspended installation, and the equipment operation vibration amplitude is reduced. Compared with the prior art, the integrated noise reduction waste heat steam recycling device is better in noise reduction effect and longer in service life.

Description

Technical Field

[0001] This utility model relates to the field of waste heat recovery, and in particular to an integrated noise-reducing waste heat steam recovery and regeneration device. Background Technology

[0002] Traditional waste heat recovery and regeneration devices typically employ an independent, externally mounted ejector design, connected to the heat exchanger via long pipelines. This structure exposes the supersonic jet directly to the external environment, resulting in intense sonic boom noise that propagates outwards without attenuation, causing significant noise pollution. Furthermore, the vibration energy is transferred to the main body of the equipment through the pipelines, which can lead to structural fatigue and cracking over time, shortening the overall lifespan of the equipment. Existing noise reduction solutions mostly rely on external sound-absorbing materials, but their effectiveness is limited by the direct radiation characteristics of sound waves and the structural transmission path.

[0003] Based on the above, existing waste heat recovery and regeneration devices need further improvement. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of existing waste heat recovery and regeneration devices with high noise levels, and to provide an integrated noise reduction waste heat steam recovery and regeneration device. Through structural integration design, the ejector is installed through the heat exchanger, and a sound-absorbing structure is wrapped around the outside of the ejector according to its shape. The noise generated by the jet is absorbed by the sound-absorbing structure and the closed cavity of the steam area in the heat exchanger blocks the noise leakage path, resulting in good noise reduction effect. It also eliminates the resonance risk of traditional suspended installation and extends the service life of the equipment.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an integrated noise reduction waste heat steam recovery and regeneration device, comprising a heat exchanger, wherein a waste heat recovery inlet is connected to the heat exchanger; an ejector, wherein the ejector is disposed through the heat exchanger, one end of which is connected to a high-pressure steam inlet and the other end is a mixed steam outlet, the heat exchanger being connected to the nozzle of the ejector; and a sound-absorbing structure, wherein the sound-absorbing structure is covered on the outside of the ejector.

[0006] This invention integrates the ejector throughout the heat exchanger through a structurally integrated design. By coating the ejector with a sound-absorbing structure corresponding to its shape, and utilizing the sealed characteristics of the steam chamber within the heat exchanger to form a sound wave blocking barrier, the jet noise undergoes dual noise reduction treatment through sound absorption attenuation and chamber isolation. Furthermore, the rigid through-connection design between the ejector and the heat exchanger eliminates resonance caused by traditional suspended installations, reducing equipment vibration amplitude and extending equipment lifespan. Compared to existing technologies, this integrated noise-reducing waste heat steam recovery and regeneration device offers better noise reduction and a longer service life.

[0007] Preferably, the sound-absorbing structure is arranged in a stepped manner along the outer wall of the ejector, including a speed-up section, a speed-down section, and a steady-state section connected in sequence. The speed-up section corresponds to the mixing chamber of the ejector, and the speed-down section and steady-state section correspond to the diffuser of the ejector, with the steady-state section connected to the mixed steam outlet. Since the pipe diameter of the mixing chamber is gradually narrowing, the pipe diameter of the first half of the diffuser is gradually expanding, and the pipe diameter of the second half is stable, the noise generated by the ejector fluid inside the ejector varies with the ejector pipe diameter. The sound-absorbing structure is set to correspond with the shape of the ejector so that the sound absorption intensity matches the noise level, resulting in higher noise reduction efficiency.

[0008] Preferably, the thickness of the acceleration section gradually increases from one end near the nozzle to the other, the thickness of the deceleration section gradually decreases from one end near the nozzle to the other, and the thicknesses at both ends of the steady section are equal; the thicker areas correspond to regions with smaller injector diameters, and the thinner areas correspond to regions with larger injector diameters.

[0009] Preferably, it also includes a steam-water separator, which is disposed on the upper side of the heat exchanger, with one end connected to the heat exchanger and the other end connected to the nozzle; the steam-water separator is used to guide the regenerated low-pressure steam in the heat exchanger to the low-pressure zone formed by the nozzle outlet, so that it can be mixed with the high-pressure steam.

[0010] Preferably, the sound-absorbing structure uses a composite sound-absorbing material of rock wool and ceramic fiber, which can achieve wide-band noise reduction and high temperature resistance.

[0011] Preferably, the sound-absorbing structure is formed by stacking sound-absorbing materials to create a honeycomb shape, thereby converting sound energy into heat energy through the principle of porous sound absorption to reduce noise.

[0012] Preferably, the heat exchanger is a hollow structure, including a heat exchange chamber at the bottom and a boiling zone on the upper side of the heat exchange chamber. Heat exchange tubes are evenly distributed in the heat exchange chamber, and the boiling zone is connected to the steam-water separator. After the waste heat enters the heat exchanger, it exchanges heat with the heat exchange tubes to form regenerated low-pressure steam. After the ejector is started, the high-pressure steam is accelerated to supersonic speed from the high-pressure steam inlet through the nozzle, forming a low-pressure zone at the nozzle outlet. The regenerated low-pressure steam in the boiling zone is then guided to the ejector through the steam-water separator.

[0013] Preferably, the heat exchange chamber is connected to a waste heat steam outlet, a condensate outlet, and a heat exchanger drain outlet. The waste heat steam outlet is located at the lower part of the heat exchange chamber, and the condensate outlet and the heat exchanger drain outlet are located on the lower side of the heat exchange chamber.

[0014] Preferably, a level gauge is provided on one side of the heat exchanger, and a water inlet is connected to the heat exchanger. When the level gauge detects that the water level has dropped to a set position, the water inlet is opened to supply water.

[0015] Preferably, the steam-water separator is equipped with a thermometer, which is used to detect the temperature of the regenerated low-pressure steam in the heat exchanger; when the thermometer detects that the temperature of the regenerated low-pressure steam reaches 90°C, the ejector starts to work. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model.

[0017] Figure 2 This is a partial structural cross-sectional view of this utility model.

[0018] Figure 3 This is a schematic diagram of the ejector and sound-absorbing structure.

[0019] Figure 4 This is a front view of the present invention.

[0020] Figure 5 This is a side view of the present invention.

[0021] Label Explanation:

[0022] Integrated noise reduction waste heat steam recovery and regeneration device 1, heat exchanger 2, waste heat recovery inlet 21, heat exchange chamber 22, boiling zone 23, heat exchange tube 24, waste heat exhaust steam outlet 25, condensate outlet 26, heat exchanger drain outlet 27, level gauge 28, water inlet 29, ejector 3, high-pressure steam inlet 31, mixed steam outlet 32, nozzle 33, mixing chamber 34, diffuser 35, sound-absorbing structure 4, speed-up section 41, speed-down section 42, steady-state section 43, steam-water separator 5, thermometer 51. Detailed Implementation

[0023] In the description of this utility model, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "horizontal", "inner", and "outer" is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing this utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this utility model.

[0024] See Figures 1 to 2 This embodiment discloses an integrated noise reduction waste heat steam recovery and regeneration device 1, including a heat exchanger 2, on which a waste heat recovery inlet 21 is connected; an ejector 3, which is disposed through the heat exchanger 2, with one end connected to a high-pressure steam inlet 31 and the other end being a mixed steam outlet 32, the heat exchanger 2 being connected to the nozzle 33 of the ejector 3; and a sound-absorbing structure 4, which covers the outside of the ejector 3.

[0025] To ensure that the sound-absorbing structure 4 corresponds to the structure of the ejector 3, the sound-absorbing structure 4 is arranged in a stepped manner along the outer wall of the ejector 3, including a speed-up section 41, a speed-down section 42, and a steady section 43 connected in sequence. The speed-up section 41 corresponds to the mixing chamber 34 of the ejector 3, the speed-down section 42 and the steady section 43 correspond to the diffuser 35 of the ejector 3, and the steady section 43 is connected to the mixed steam outlet 32.

[0026] The thickness of the acceleration section 41 gradually increases from one end near the nozzle 33 to the other, the thickness of the deceleration section 42 gradually decreases from one end near the nozzle 33 to the other, and the thickness of the two ends of the steady section 43 is equal. The thickness of the sound-absorbing structure 4 in this design corresponds to the diameter of the injector 3. Where the pipe diameter is small, the steam velocity is high and the noise is large, so the corresponding sound-absorbing structure 4 is thicker; where the pipe diameter is large, the steam velocity is low and the noise is small, so the corresponding sound-absorbing structure 4 is thinner, making sound absorption more efficient.

[0027] It also includes a steam-water separator 5, which is disposed on the upper side of the heat exchanger 2, with one end connected to the heat exchanger 2 and the other end connected to the nozzle 33. In this solution, the steam-water separator 5 is used to guide the regenerated low-pressure steam in the heat exchanger 2 to the low-pressure zone formed by the nozzle 33 outlet, so that it mixes with the high-pressure steam.

[0028] The sound-absorbing structure 4 uses a composite sound-absorbing material of rock wool and ceramic fiber. This design uses a composite of rock wool and ceramic fiber to form a sound-absorbing material that can absorb and reduce broadband noise, and it also exhibits excellent high-temperature resistance.

[0029] To reduce noise through the principle of porous sound absorption, the sound-absorbing structure 4 is formed by stacking sound-absorbing materials to create a honeycomb shape.

[0030] The heat exchanger 2 is a hollow structure, including a heat exchange chamber 22 at the bottom and a boiling zone 23 on the upper side of the heat exchange chamber 22. Heat exchange tubes 24 are evenly distributed inside the heat exchange chamber 22, and the boiling zone 23 is connected to the steam-water separator 5. In this design, the enclosed cavity of the boiling zone 23 blocks noise from the ejector 3, further reducing noise transmission.

[0031] The heat exchange chamber 22 is connected to a waste heat steam outlet 25, a condensate outlet 26, and a heat exchanger drain outlet 27. The waste heat steam outlet 25 is located at the lower part of the heat exchange chamber 22, and the condensate outlet 26 and the heat exchanger drain outlet 27 are located on the lower side of the heat exchange chamber 22.

[0032] To ensure the water level in the heat exchange tube 24, a level gauge 28 is provided on one side of the heat exchanger 2, and a water inlet 29 is connected to the heat exchanger 2. When the level gauge 28 detects that the water level has dropped to a set position, the water inlet 29 opens to replenish water.

[0033] The steam-water separator 5 is equipped with a thermometer 51, which is used to detect the temperature of the regenerated low-pressure steam in the heat exchanger 2. In this scheme, when the thermometer 51 detects that the temperature of the regenerated low-pressure steam reaches 90°C, the ejector 3 starts to work.

[0034] This invention integrates the ejector 3 into the heat exchanger 2 through a structurally integrated design. A sound-absorbing structure 4, corresponding to the shape of the ejector 3, is wrapped around its outer surface. Simultaneously, the sealed characteristics of the steam cavity within the heat exchanger 2 form a sound wave blocking barrier. This allows the jet noise to undergo dual noise reduction treatment through sound absorption attenuation and cavity isolation. Furthermore, the rigid through-connection design between the ejector 3 and the heat exchanger 2 eliminates the resonance phenomenon caused by traditional suspended installations, reducing equipment vibration amplitude and extending equipment lifespan. Compared to existing technologies, the integrated noise-reducing waste heat steam recovery and regeneration device 1 of this invention has better noise reduction effect and a longer service life.

[0035] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments disclosed and described above, and some modifications and changes to this utility model should also fall within the protection scope of the claims of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this utility model.

Claims

1. An integrated noise-reducing waste heat steam recovery and regeneration device, characterized in that, include Heat exchanger (2), wherein a waste heat recovery inlet (21) is connected to the heat exchanger (2); The ejector (3) is installed through the heat exchanger (2), with one end connected to a high-pressure steam inlet (31) and the other end to a mixed steam outlet (32). The heat exchanger (2) is connected to the nozzle (33) of the ejector (3). The sound-absorbing structure (4) covers the outside of the injector (3).

2. The regeneration device according to claim 1, characterized in that, The sound-absorbing structure (4) is arranged in a stepped manner along the outer wall of the injector (3), including a speed-up section (41), a speed-down section (42), and a steady section (43) connected in sequence. The speed-up section (41) corresponds to the mixing chamber (34) of the injector (3), the speed-down section (42) and the steady section (43) correspond to the diffuser (35) of the injector (3), and the steady section (43) is connected to the mixed steam outlet (32).

3. The regeneration device according to claim 2, characterized in that, The thickness of the acceleration section (41) gradually increases from one end near the nozzle (33) to the other end, the thickness of the deceleration section (42) gradually decreases from one end near the nozzle (33) to the other end, and the thickness of the two ends of the steady section (43) is equal.

4. The regeneration device according to claim 1, characterized in that, It also includes a steam-water separator (5), which is located on the upper side of the heat exchanger (2), with one end connected to the heat exchanger (2) and the other end connected to the nozzle (33).

5. The regeneration device according to claim 1, characterized in that, The sound-absorbing structure (4) uses a composite sound-absorbing material of rock wool and ceramic fiber.

6. The regeneration device according to claim 1, characterized in that, The sound-absorbing structure (4) is formed by stacking sound-absorbing materials to form a honeycomb shape.

7. The regeneration device according to claim 4, characterized in that, The heat exchanger (2) is a hollow structure, including a heat exchange chamber (22) at the bottom and a boiling zone (23) on the upper side of the heat exchange chamber (22). Heat exchange tubes (24) are evenly distributed in the heat exchange chamber (22), and the boiling zone (23) is connected to the steam-water separator (5).

8. The regeneration apparatus according to claim 7, characterized in that, The heat exchange chamber (22) is connected to a waste heat steam outlet (25), a condensate outlet (26), and a heat exchanger drain outlet (27). The waste heat steam outlet (25) is located at the lower part of the heat exchange chamber (22), and the condensate outlet (26) and the heat exchanger drain outlet (27) are located on the lower side of the heat exchange chamber (22).

9. The regeneration device according to claim 1, characterized in that, A level gauge (28) is provided on one side of the heat exchanger (2), and a water inlet (29) is connected to the heat exchanger (2). When the level gauge (28) detects that the water level has dropped to the set position, the water inlet (29) opens to replenish water.

10. The regeneration device according to claim 4, characterized in that, The steam-water separator (5) is equipped with a thermometer (51), which is used to detect the temperature of the regenerated low-pressure steam in the heat exchanger (2).

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