A deaerator exhaust energy recovery device

Abstract

The utility model discloses a kind of deaerator exhaust steam energy recovery devices, it is related to deaerator exhaust steam recovery field, including shell, chamber partition unit, exhaust steam silencing flow guide unit and heat exchange unit, the chamber partition unit includes two bulkheads, two The bulkhead is fixed horizontally in shell, shell is sequentially separated into gas guide cavity, heat exchange cavity and liquid collection cavity from top to bottom, the exhaust steam silencing flow guide unit is fixedly arranged in gas guide cavity, the exhaust steam silencing flow guide unit includes vortex tube and air inlet pipe, one end of the air inlet pipe is used for connecting deaerator exhaust steam outlet, and the other end penetrates shell and is communicated with vortex tube, the heat exchange unit is a plurality of heat exchange pipes, the upper end of the heat exchange pipe penetrates upper bulkhead and is communicated with vortex tube;The utility model is through the special silencing structure of "spiral vortex tube+air flow deceleration", compared with existing no silencing or simple silencing device, reduce noise, meet industrial workshop noise emission standard, improve operating environment.

Description

Technical Field

[0001] This utility model belongs to the field of deaerator exhaust steam recovery, specifically a deaerator exhaust steam energy recovery device. Background Technology

[0002] In industries such as thermal power generation and chemical engineering, deaerators are key equipment in boiler feedwater systems, continuously emitting exhaust steam containing a large amount of saturated steam during operation. Directly releasing this high-temperature exhaust steam into the atmosphere not only results in significant energy waste but also generates intense industrial noise due to the impact of high-speed airflow. Currently, exhaust steam recovery devices are used in industry, but they generally suffer from poor noise control in actual operation. The exhaust steam exiting the deaerator has a high velocity, and this high-speed airflow generates severe turbulence and impact when entering the recovery device.

[0003] Most existing recovery devices use simple sound-absorbing materials or straight-pipe flow guide structures, which are insufficient to effectively address the noise problem caused by such high-speed airflow. Simple sound-absorbing cotton gradually loses its sound-absorbing performance after prolonged contact with high-temperature, high-humidity exhaust steam, and it cannot fundamentally solve the problem of airflow impact noise. Straight-pipe flow guide structures, on the other hand, cause the exhaust steam to maintain a high-speed, straight flow, generating even greater vortex noise at pipe bends or changes in cross-section. This continuous industrial noise not only affects the operating environment of the production workshop but may also exceed noise emission standards for industrial sites, posing a potential health risk to workers. Utility Model Content

[0004] The purpose of this invention is to provide a deaerator exhaust steam energy recovery device to solve the problems of improper structural design of existing exhaust steam recovery devices, easy attenuation of sound-absorbing materials and inability to suppress airflow impact noise, resulting in excessive environmental noise and health risks.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a deaerator exhaust steam energy recovery device, comprising a shell, a chamber partition unit, an exhaust steam silencing and diversion unit, a heat exchange unit, a drainage assembly, a non-condensable gas discharge unit, and a hot water exchange circuit unit.

[0006] The shell is a sealed structure, and the chamber partition unit includes two partitions. The two partitions are horizontally fixed inside the shell, dividing the shell from top to bottom into an air guiding chamber, a heat exchange chamber, and a liquid collection chamber.

[0007] The exhaust steam silencing and guiding unit is fixedly installed in the air guiding cavity. The exhaust steam silencing and guiding unit includes a vortex tube and an air inlet tube. One end of the air inlet tube is used to connect to the exhaust steam outlet of the deaerator, and the other end passes through the shell and communicates with the vortex tube.

[0008] The heat exchange unit consists of several heat exchange tubes. The upper end of each heat exchange tube passes through the upper partition and communicates with the vortex tube, while the lower end passes through the lower partition and extends into the liquid collection chamber.

[0009] The heat exchange circuit unit includes an inlet pipe and an outlet pipe. The inlet pipe is fixed to the side wall of the shell and communicates with the lower part of the heat exchange chamber. The outlet pipe is fixed to the side wall of the shell and communicates with the upper part of the heat exchange chamber.

[0010] The drainage assembly is fixed to the outer wall of the liquid collection chamber, and the non-condensable gas discharge unit is an air outlet pipe. One end of the air outlet pipe is connected to the upper part of the liquid collection chamber, and the other end extends through the shell to the outside.

[0011] A drain outlet is fixedly provided at the bottom of the housing, and the drain outlet is connected to the liquid collection chamber.

[0012] Preferably, both partitions are metal plates and are welded and fixed to the inner wall of the shell. The upper partition has a central hole adapted to the vortex tube and an installation hole adapted to the heat exchange tube. The lower partition only has an installation hole adapted to the heat exchange tube. A sealing ring is embedded in both the central hole and the installation hole to prevent cross-flow of the medium between the chambers.

[0013] Preferably, the vortex tube of the exhaust steam silencing and guiding unit has a spiral structure that is larger at the top and smaller at the bottom. It is fixed to the center of the air guiding cavity by a bracket. The bracket is welded and fixed to the upper partition. The air inlet pipe is equipped with a manual shut-off valve for cutting off the exhaust steam source during maintenance.

[0014] Preferably, the heat exchange tube adopts a variable pitch spiral tube structure, in which the pitch of the middle section is smaller than that of the upper and lower sections. The inlet pipe and the outlet pipe form a counter-current heat exchange circuit. After the circulating water enters the heat exchange chamber from the inlet pipe, it flows from bottom to top and exchanges heat with the exhaust steam flowing from top to bottom in the heat exchange tube.

[0015] Preferably, the drainage assembly includes a three-way pipe, two drain pipes, a float valve, and an on / off valve. One end of each of the two drain pipes is connected to the liquid collection chamber, and the other end of each drain pipe is connected to the inlet of the three-way pipe. The outlet of the three-way pipe is used to connect to a condensate recovery pipe. The float valve is connected in series on one of the drain pipes, and the on / off valve is connected in series on the other drain pipe. The float part of the float valve is placed inside the liquid collection chamber.

[0016] Preferably, the outlet pipe of the non-condensable gas discharge unit is provided with a venturi tube at the end extending to the outside of the housing, and the drain port is provided with a blind valve or drain valve for periodically discharging impurities deposited at the bottom of the liquid collection chamber. The top of the housing is provided with an inspection port with a sealing cover for the maintenance of internal components.

[0017] Preferably, both the inlet pipe and the outlet pipe are equipped with flanges for connecting to an external circulating water network.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. This utility model enhances the turbulence of exhaust steam by using variable pitch heat exchange tubes, maximizes the temperature difference through countercurrent heat exchange, and improves the heat recovery rate. Compared with fixed pitch heat exchange tubes or cocurrent heat exchange, it saves steam energy consumption.

[0020] 2. This utility model uses a special noise reduction structure of "spiral vortex tube + airflow deceleration" to reduce noise compared with existing noise reduction devices without noise reduction or with simple noise reduction, thereby meeting the noise emission standards of industrial workshops and improving the operating environment.

[0021] 3. This utility model adopts a dual-path drainage design (automatic float valve + backup on / off valve) to avoid downtime caused by failure of a single drainage structure, improve the continuous operation rate of equipment, and reduce production interruption losses. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0023] Figure 1 This is a first-view perspective three-dimensional structural diagram of an embodiment of the present utility model;

[0024] Figure 2 This is a second-view perspective three-dimensional structural diagram provided for an embodiment of the present utility model;

[0025] Figure 3 A third-view stereoscopic structural diagram provided for an embodiment of this utility model.

[0026] In the picture:

[0027] 1. Shell; 2. Baffle; 3. Exhaust steam silencer and guide unit; 301. Vortex tube; 302. Inlet pipe; 4. Heat exchange tube; 5. Outlet pipe; 6. Drainage assembly; 601. Tee pipe; 602. Drain pipe; 603. Float valve; 604. On / off valve; 7. Sewage outlet; 8. Water outlet pipe; 9. Water inlet pipe. Detailed Implementation

[0028] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0029] As attached Figure 1 To be continued Figure 3 As shown:

[0030] This utility model provides a deaerator waste steam energy recovery device, including a shell 1, a chamber partition unit, a waste steam silencing and diversion unit 3, a heat exchange unit, a drainage assembly 6, a non-condensable gas discharge unit, and a heat exchange water circuit unit; the shell 1 is a vertical cylindrical sealed structure, made of 316L stainless steel, with welded support feet at the bottom to ensure vertical stability; the chamber partition unit includes two metal partitions 2, horizontally welded inside the shell 1, dividing the shell 1 from top to bottom into a gas guiding chamber, a heat exchange chamber, and a drainage assembly 6. The cavity and liquid collection cavity, the weld joint between the partition plate 2 and the shell 1 is filled with high-temperature resistant sealant to prevent medium leakage; the exhaust steam silencing and guiding unit 3 is fixed in the air guiding cavity by a bracket, including a vortex tube 301 and an air inlet pipe 302—the vortex tube 301 has a spiral structure that is larger at the top and smaller at the bottom, with a smooth inner wall, and the bracket is welded and fixed to the upper partition plate 2; one end of the air inlet pipe 302 is connected to the exhaust steam outlet of the deaerator through a flange, and the other end passes through the side wall of the shell 1 and communicates with the vortex tube 301, and a manual shut-off valve is provided on the pipeline. This facilitates the disconnection of the exhaust steam source during maintenance. The heat exchange unit consists of several heat exchange tubes 4, made of copper, with a variable pitch spiral structure. The pitch in the middle section is smaller than that in the upper and lower sections. The upper end of the heat exchange tube 4 passes through the upper partition 2 and connects to the vortex tube 301, while the lower end passes through the lower partition 2 and extends into the liquid collection chamber. The water exchange circuit unit includes an inlet pipe 9 and an outlet pipe 8, both fixed to the side wall of the shell 1 by flanges. The inlet pipe 9 connects to the lower part of the heat exchange chamber, and the outlet pipe 8 connects to the upper part of the heat exchange chamber, forming a counter-current flow. The heat exchange circuit; the drainage assembly 6 is fixed to the outer wall of the liquid collection chamber by a flange, including a three-way pipe 601, a drain pipe 602, a float valve 603 and an on / off valve 604, to realize automatic and manual dual-path drainage; the non-condensable gas discharge unit is an outlet pipe 5, one end of which is connected to the upper part of the liquid collection chamber, and the other end extends through the shell 1 to the outside, with a venturi tube at the end; the bottom center of the shell 1 is provided with a drain port 7 for discharging deposited impurities, and the top is provided with an inspection port with a sealed cover for convenient internal maintenance.

[0031] During operation, install the housing 1 on the fixed bracket, connect the pipeline, and check the status of each valve: close the manual shut-off valve of the air inlet pipe 302 and the valve of the drain port 7, and open the valves of the water inlet pipe 9 and the water outlet pipe 8 to allow circulating water to enter the heat exchange chamber from the water inlet pipe 9, flow from bottom to top, and flow out from the water outlet pipe 8, forming a stable water path; then slowly open the manual shut-off valve of the air inlet pipe 302, and the exhaust steam of the deaerator enters the vortex tube 301 through the air inlet pipe 302, slows down and silences along the spiral tube wall, and is then evenly distributed to each heat exchange tube 4; the exhaust steam flows from the heat exchange tube 4... The steam flows downwards, counter-currently exchanging heat with the circulating water flowing upwards in the heat exchange chamber. Exhaust steam condenses into condensate, transferring heat to the circulating water. The heated circulating water is then transported to subsequent heat-using equipment via outlet pipe 8. Condensate flows into the collection chamber along heat exchange pipe 4, while non-condensable gases are discharged through outlet pipe 5. When the liquid level in the collection chamber reaches a set height, float valve 603 automatically opens, and the condensate is discharged into the recovery pipeline via drain pipe 602 and three-way pipe 601. If float valve 603 malfunctions, the on / off valve 604 can be opened for manual drainage. The drain port 7 is opened periodically to remove deposited impurities at the bottom of the collection chamber. Through noise reduction and flow guidance, counter-current heat exchange, and dual-path drainage, exhaust steam noise reduction, heat recovery, and stable operation are achieved, improving energy utilization and operational safety compared to traditional devices.

[0032] As attached Figure 2 To be continued Figure 3 As shown: In one embodiment of this utility model, both partition plates 2 are metal plates, which are fixed to the inner wall of the shell 1 by argon arc welding. High-temperature resistant sealant is embedded at the weld seam to fill the weld gap. The upper partition plate 2 has a central hole adapted to the vortex tube 301 and an installation hole adapted to the heat exchange tube 4. The lower partition plate 2 only has an installation hole adapted to the heat exchange tube 4. All holes are fitted with sealing rings. The sealing rings are made of high-temperature resistant rubber and fit tightly to the tube body and the hole wall to prevent the exhaust steam of the gas guide chamber from seeping into the heat exchange chamber and the circulating water of the heat exchange chamber from seeping into the liquid collection chamber, ensuring that the medium in each chamber is independent and there is no risk of crossflow.

[0033] During operation, before installing the partition 2, the staff first welds a positioning ring on the inner wall of the shell 1 to ensure that the level of the partition 2 meets the requirements; after welding, apply high-temperature resistant sealant to the weld and let it cure; embed the sealing ring into each hole, and then install the vortex tube 301 and heat exchange tube 4 to ensure that the sealing ring fits tightly with the tube body; during operation, regularly check the connection between the partition 2 and the shell 1 to ensure that there is no cracking or leakage of sealant, thus ensuring the independence of the chamber and maintaining the heat exchange efficiency.

[0034] As attached Figure 2 To be continued Figure 3As shown: In one embodiment of this utility model, the vortex tube 301 of the exhaust steam silencing and guiding unit 3 has a spiral structure and is fixed to the center of the air guiding cavity by a metal bracket. The bracket is firmly welded to the upper partition 2. The manual shut-off valve on the air inlet pipe 302 is convenient for cutting off the exhaust steam source during maintenance to avoid exhaust steam leakage. The inner wall of the vortex tube 301 is polished to reduce airflow resistance. After the exhaust steam enters, it flows along the spiral path, and the flow velocity gradually decreases, significantly reducing impact noise. At the same time, it prolongs the residence time of the exhaust steam in the air guiding cavity, improves airflow stability, avoids airflow pulses in the subsequent heat exchange tube 4, and ensures uniform heat exchange.

[0035] Before opening the intake pipe 302, the staff should check the inner wall of the vortex pipe 301 through the inspection port to see if it is clean and free of dirt or blockage. After the exhaust steam enters the vortex pipe 301, the spiral structure guides the airflow to descend smoothly, reducing the noise to meet industrial standards. During maintenance, the manual shut-off valve is closed to cut off the exhaust steam source, and the vortex pipe 301 can be safely disassembled to clean the inner wall, ensuring long-term stability of the noise reduction and airflow guiding effect.

[0036] As attached Figure 2 To be continued Figure 3 As shown: In one embodiment of this utility model, the heat exchange tube 4 adopts a variable pitch spiral structure, with the pitch of the middle section being smaller than that of the upper and lower sections. The material is selected from copper or titanium alloy. Copper has excellent thermal conductivity, while titanium alloy has strong corrosion resistance, and the choice can be made according to the working conditions. The upper end of the heat exchange tube 4 is connected to the vortex tube 301 through a three-way connector, and the lower end extends into the liquid collection chamber to ensure that the condensate flows in smoothly. In the counter-current heat exchange circuit, the circulating water flows from bottom to top, forming a counter-current contact with the exhaust steam flowing from top to bottom in the heat exchange tube 4, maximizing the heat exchange temperature difference, improving the heat transfer efficiency, and preventing the exhaust steam from being discharged before sufficient heat exchange.

[0037] During operation, circulating water enters the lower part of the heat exchange chamber from the inlet pipe 9 and flows slowly upward, fully enveloping the outer wall of the heat exchange tube 4. When the exhaust steam flows inside the heat exchange tube 4, the small-pitch structure in the middle section enhances airflow turbulence, breaks the thermal boundary layer on the inner wall of the tube, and accelerates heat transfer. The gradually increasing large-pitch structure in the upper and lower sections balances the flow resistance inside the tube and avoids exhaust steam stagnation. During operation, the temperature of the outlet pipe 8 is monitored to determine the heat exchange effect and ensure that the heating temperature of the circulating water meets the requirements and there is no heat waste.

[0038] As attached Figure 1 To be continued Figure 3As shown: In one embodiment of this utility model, one end of each of the two drain pipes 602 of the drainage assembly 6 is connected to the liquid collection chamber, and the other end is connected to the inlet of the three-way pipe 601. The outlet of the three-way pipe 601 is connected to the condensate recovery pipe. The float valve 603 is connected in series on one drain pipe 602, with the float placed in the liquid collection chamber, and automatically opens and closes according to the liquid level. The on / off valve 604 is connected in series on the other drain pipe 602 as a backup. The float valve 603 realizes unattended drainage through liquid level sensing, and the on / off valve 604 can be quickly opened when the float valve 603 fails to prevent the liquid collection chamber from overflowing and ensure the continuous operation of the equipment.

[0039] During operation, staff adjust the float valve 603 by injecting water into the collection chamber and observing its opening and closing status at the set liquid level to ensure sensitive operation. During operation, the float valve 603 automatically controls drainage based on the liquid level without manual intervention. If an abnormal rise in the liquid level in the collection chamber is detected, the float valve 603 is deemed to be faulty. The on / off valve 604 is immediately opened to drain the water, and the float valve 603 is inspected and repaired. The dual-path drainage design significantly reduces equipment downtime and improves production continuity.

[0040] In one embodiment of this utility model, the end of the outlet pipe 5 of the non-condensable gas discharge unit extending to the outside of the housing 1 is provided with a Venturi tube to accelerate the discharge of non-condensable gas; the drain port 7 is provided with a blind valve or a drain valve, which can be opened periodically to discharge impurities such as rust and scale from the bottom of the liquid collection chamber, preventing impurities from clogging the heat exchange tube 4 or affecting drainage; the inspection port at the top of the housing 1 is circular, and the sealing cover is fixed by bolts. A sealing gasket is provided inside the cover to ensure airtightness; during maintenance, after closing the relevant valves and depressurizing, the sealing cover can be removed to enter the interior of the housing 1 to check the condition of the vortex tube 301 and the heat exchange tube 4, clean the scale, or replace damaged parts.

[0041] During operation, staff open the valve of drain port 7 weekly to discharge impurities from the bottom of the collection chamber, and close the valve after the discharge is completed. Internal maintenance is performed quarterly through the inspection port: check for leaks in heat exchange tube 4 and for scale buildup on the inner wall of vortex tube 301. After cleaning, the sealing cover is reset to ensure that the sealing gasket is intact and there is no steam leakage. The venturi tube accelerates the removal of non-condensable gas in the collection chamber to ensure smooth exhaust.

[0042] As attached Figure 1 To be continued Figure 3 As shown: In one embodiment of this utility model, the shell 1 is made of 304 stainless steel or 316L stainless steel, which is resistant to corrosion by exhaust steam condensate and extends the service life of the equipment; the support feet at the bottom of the shell 1 are made of metal and are welded and fixed to the shell 1. The bottom of the support feet is provided with a pad to increase the contact area with the ground and ensure that the shell 1 is placed vertically without tilting; vertical placement can ensure that the condensate in the heat exchange tube 4 flows smoothly into the liquid collection chamber, avoid liquid accumulation leading to a decrease in heat exchange efficiency, and at the same time prevent the shell 1 from deforming due to uneven force.

[0043] During operation, before installing housing 1, the staff leveled the ground to ensure it was level. The support feet were fixed to the ground with expansion bolts. Housing 1 was then hoisted to the support feet position, and after adjusting the verticality, it was welded and fixed. During operation, housing 1 bears the internal pressure and the weight of the components. The stainless steel material is free from deformation and corrosion. The support feet provide stable support, and housing 1 does not shake, ensuring that the internal components are not damaged by force and maintaining long-term stable operation.

[0044] In one embodiment of this utility model, the sealing rings in the mounting holes of the heat exchange tube 4 and the partition plate 2 are made of high-temperature resistant rubber, which is resistant to steam and condensate corrosion, has small compression deformation, and can maintain sealing performance after long-term use; the flanges on the inlet pipe 9 and the outlet pipe 8 are standard industrial flanges, and graphite composite gaskets are embedded in the sealing surfaces. The graphite gaskets have excellent temperature and pressure resistance, ensuring no leakage after connection with the external circulating water network; the flange connection is easy to disassemble, facilitating subsequent pipeline maintenance or replacement.

[0045] During operation, when installing heat exchange tube 4, apply silicone grease to the surface of the sealing ring to enhance sealing performance, and install it slowly to avoid scratching the sealing ring; when connecting the inlet pipe 9 and outlet pipe 8 to the external pipe network, align the flanges and tighten the bolts in a diagonal sequence to ensure even force distribution and tight fit of the sealing gasket; check the flange connections during operation to ensure no circulating water leakage, prevent water waste and moisture around the equipment, and prevent the exhaust steam in the air guide chamber from being diluted by the circulating water to ensure stable heat exchange efficiency.

[0046] Working Principle: Open the manual shut-off valve of the air inlet pipe 302, and open the valves of the water inlet pipe 9 and the water outlet pipe 8 to create a counter-current flow of circulating water within the heat exchange chamber. The exhaust steam from the deaerator enters the vortex pipe 301 through the air inlet pipe 302, spirals downwards to reduce speed and noise, and is then evenly distributed to each heat exchange pipe 4. The exhaust steam flows downwards within the heat exchange pipe 4, exchanging heat counter-currently with the circulating water flowing upwards within the heat exchange chamber. The exhaust steam condenses into liquid, and the heat is transferred to the circulating water (after the circulating water temperature rises, it is transported to subsequent heat-using equipment via the water outlet pipe 8). Condensate and Non-condensable Gas Discharge: The condensate flows into the collection chamber along the heat exchange pipe 4. When the liquid level reaches the set height of the float valve 603, the float valve 603 automatically opens to drain the water, and automatically closes when the liquid level drops. If the float valve 603 malfunctions, the on / off valve 604 is opened for backup drainage. Residual non-condensable gas after heat exchange is discharged through the air outlet pipe 5. Impurities are periodically removed through the drain port 7 to ensure long-term stability of the device.

[0047] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A deaerator waste steam energy recovery device, characterized in that: Includes a shell (1), a chamber partition unit, a waste steam silencing and diversion unit (3), a heat exchange unit, a drainage assembly (6), a non-condensable gas discharge unit, and a hot water exchange circuit unit; The shell (1) is a closed structure. The chamber partition unit includes two partitions (2). The two partitions (2) are horizontally fixed inside the shell (1) and divide the shell (1) into an air guide chamber, a heat exchange chamber and a liquid collection chamber from top to bottom. The exhaust steam silencing and guiding unit (3) is fixedly installed in the air guiding cavity. The exhaust steam silencing and guiding unit (3) includes a vortex tube (301) and an air inlet pipe (302). One end of the air inlet pipe (302) is used to connect to the exhaust steam outlet of the deaerator, and the other end passes through the shell (1) and communicates with the vortex tube (301). The heat exchange unit consists of several heat exchange tubes (4). The upper end of the heat exchange tube (4) passes through the upper partition (2) and communicates with the vortex tube (301), and the lower end passes through the lower partition (2) and extends into the liquid collection chamber. The heat exchange circuit unit includes an inlet pipe (9) and an outlet pipe (8). The inlet pipe (9) is fixed to the side wall of the shell (1) and communicates with the lower part of the heat exchange chamber. The outlet pipe (8) is fixed to the side wall of the shell (1) and communicates with the upper part of the heat exchange chamber. The drainage component (6) is fixed on the outer wall of the liquid collection chamber. The non-condensable gas discharge unit is an air outlet pipe. One end of the air outlet pipe (5) is connected to the upper part of the liquid collection chamber, and the other end extends through the shell (1) to the outside. The bottom of the housing (1) is fixedly provided with a drain port (7), which is connected to the liquid collection chamber.

2. The deaerator waste steam energy recovery device according to claim 1, characterized in that: Both partitions (2) are metal plates and are welded and fixed to the inner wall of the shell (1). The upper partition (2) has a central hole adapted to the vortex tube (301) and an installation hole adapted to the heat exchange tube (4). The lower partition (2) only has an installation hole adapted to the heat exchange tube (4). Both the central hole and the installation hole are fitted with sealing rings to prevent cross-flow of media between chambers.

3. The deaerator waste steam energy recovery device according to claim 2, characterized in that: The vortex tube (301) of the exhaust steam silencing and guiding unit (3) is a spiral structure with a larger upper part and a smaller lower part. It is fixed to the center of the air guiding cavity by a bracket. The bracket is welded and fixed to the upper partition (2). The air inlet pipe (302) is equipped with a manual shut-off valve for cutting off the exhaust steam source during maintenance.

4. The deaerator waste steam energy recovery device according to claim 3, characterized in that: The heat exchange tube (4) adopts a variable pitch spiral tube structure, in which the pitch of the middle section is smaller than that of the upper and lower sections. The water inlet pipe (9) and the water outlet pipe (8) form a counter-current heat exchange circuit. After the circulating water enters the heat exchange chamber from the water inlet pipe (9), it flows from bottom to top and exchanges heat with the exhaust steam flowing from top to bottom in the heat exchange tube (4).

5. A deaerator waste steam energy recovery device according to claim 4, characterized in that: The drainage assembly (6) includes a three-way pipe (601), two drain pipes (602), a float valve (603), and an on / off valve (604). One end of each of the two drain pipes (602) is connected to the liquid collection chamber, and the other end is connected to the inlet of the three-way pipe (601). The outlet of the three-way pipe (601) is used to connect to the condensate recovery pipe. The float valve (603) is connected in series on one of the drain pipes (602), and the on / off valve (604) is connected in series on the other drain pipe (602). The float part of the float valve (603) is placed inside the liquid collection chamber.

6. The deaerator waste steam energy recovery device according to claim 5, characterized in that: The outlet pipe (5) of the non-condensable gas discharge unit extends to the outside of the housing (1) and is provided with a Venturi tube. The drain port (7) is provided with a blind valve or drain valve for periodically discharging impurities deposited at the bottom of the liquid collection chamber. The top of the housing (1) is provided with an inspection port with a sealing cover for the maintenance of internal components.

7. A deaerator waste steam energy recovery device according to claim 6, characterized in that: Both the inlet pipe (9) and the outlet pipe (8) are equipped with flanges for connecting to the external circulating water network.

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