A thermal deaerator for boiler heating system

Abstract

The technical field of deaerator design of the present invention discloses a thermal deaerator for a boiler heating system, including a deaerator head, the bottom of the deaerator head is fixedly connected to a water storage tank, and the bottom of the deaerator head is fixedly installed with a connecting pipe connected to the water storage tank, the top of the deaerator head is fixedly connected to an oxygen outlet pipe connected to the outside, and the outer wall of the deaerator head is installed with a plurality of first steam pipes that can transport external water vapor to the deaerator head. The present invention allows the incoming boiler feed water to flow into the internal cavity of the heat exchanger from the first water outlet through the water inlet pipe, thereby entering the internal cavity of the fixed pipe from the water inlet, and falling to the upper surface of the first spiral plate, and then slowly flowing from the upper surface of the first spiral plate to the bottom of the fixed pipe for discharge, which greatly increases the contact time between the boiler feed water and the water vapor, so that the dissolved oxygen in the water can overflow more effectively.

Description

Technical Field

[0001] The invention relates to the technical field of deaerators, in particular to a thermal deaerator used in a boiler heating system. Background Art

[0002] Boiler deaerator is one of the important equipment in the boiler system. Its main function is to remove dissolved oxygen in the boiler feed water to prevent corrosion and damage to boiler equipment and pipelines caused by oxidation. During the operation of the boiler, the dissolved oxygen in the water will react chemically with the metal, causing corrosion and scaling on the metal surface, thus affecting the thermal efficiency and operational safety of the boiler. Therefore, removing dissolved oxygen in the feed water is a very critical link.

[0003] For example, Chinese patent publication number CN217418239U discloses a novel thermal deaerator, including a deaeration water tank, a deaeration tower is arranged on the outside of the deaeration water tank; an exhaust pipe and an electric exhaust valve are arranged at the top of the deaeration tower, and several exhaust pipes are arranged, and an electric exhaust valve is arranged at one end of each exhaust pipe. When the deaeration water tank and the deaeration tower are in use, exhaust gas needs to be discharged through the exhaust pipe to prevent excessive internal heat from causing excessive internal air pressure of the deaeration tower. The pressure gauge can display the air pressure value inside the deaeration tower. If one exhaust pipe cannot achieve the effect of reducing pressure and dissipating air, the electric exhaust valve will automatically open one, so that the effect of heat dissipation and pressure reduction can be achieved on the inside of the deaeration tower through multiple exhaust pipes, thereby improving the utilization rate of the liquid.

[0004] However, the contact time between water vapor and water in the above-mentioned type of deaerator is short, and the deoxygenation process requires a certain amount of time. If the contact time is too short, the dissolved oxygen in the water cannot escape completely, which will affect the deoxygenation effect.

[0005] Therefore, in order to improve the deoxygenation effect, we need to ensure that the water vapor and water have sufficient contact time to fully remove the dissolved oxygen in the water. Summary of the invention

[0006] The object of the present invention is to provide a thermal deaerator for a boiler heating system to solve at least one technical problem existing in the above-mentioned prior art.

[0007] To achieve the above-mentioned object, the present invention provides the following technical solutions: a thermal deaerator for a boiler heating system, comprising a deaerator head, a water storage tank is fixedly connected to the bottom of the deaerator head, and a connecting pipe connected to the water storage tank is fixedly installed at the bottom of the deaerator head, an oxygen outlet pipe connected to the outside is fixedly connected to the top of the deaerator head, a plurality of first steam pipes capable of conveying external water vapor to the deaerator head are installed on the outer wall of the deaerator head, a water inlet pipe capable of conveying external boiler feed water to the deaerator head is fixedly installed on the outer wall of the deaerator head, and a plurality of first water outlets are opened on the outer wall of the water inlet pipe extending into the deaerator head;

[0008] It also includes a deceleration component which can prolong the contact time between the water flowing out of the first water outlet and the water vapor in the deaerator head.

[0009] Preferably, the deceleration assembly comprises a heat exchanger fixedly mounted on the inner wall of the deaerator head through a bracket, the heat exchanger is provided with an internal hollow cavity, the first water outlet of the water inlet pipe extends into the heat exchanger, a plurality of fixed pipes vertically penetrating the heat exchanger are fixedly mounted on the heat exchanger, a plurality of water inlets leading to the inside of the heat exchanger are opened on the inner wall of the fixed pipe located in the heat exchanger, a plurality of second steam outlets are opened on the top of the fixed pipe, a rotatable heat exchange pipe is installed at the center of the fixed pipe, a first spiral plate in contact with the inner wall of the fixed pipe is fixedly mounted on the outer wall of the heat exchange pipe, and the bottom of the fixed pipe can discharge water in the fixed pipe;

[0010] It also includes an injection assembly that can transport the water vapor entering from the first steam pipeline upward from the bottom of the fixed pipe.

[0011] Preferably, the jet assembly includes a cavity opened inside the heat exchange tube, the outer wall of the heat exchange tube is provided with a steam inlet connected to the internal cavity thereof, the first spiral plate is also provided with a cavity inside, and the cavity inside the first spiral plate is connected to the internal cavity of the heat exchange tube, and the upper surface of the first spiral plate is provided with a plurality of first steam outlets connected to the internal cavity thereof;

[0012] The jet assembly further comprises a connection portion which enables water vapor in the first steam pipe to enter from the steam inlet.

[0013] Preferably, the connecting portion includes a sealing body fixedly installed in a fixed pipe, the first steam pipe penetrates into the fixed pipe and communicates with the interior of the sealing body, the heat exchange tube passes through the sealing body and is rotatably connected to the penetration point of the sealing body, a sealed cavity is formed between the inner wall of the sealing body and the outer wall of the heat exchange tube, and the steam inlets are all in the sealed cavity.

[0014] Preferably, a plurality of rotating blades are fixedly mounted on the outer wall of the heat exchange tube in the sealed cavity, the steam inlet is located between two adjacent rotating blades, and the first steam pipe and the sealing body are designed to be tangentially connected.

[0015] Preferably, a storage box is fixedly connected to the bottom of the water storage tank, a second steam pipe communicating with the interior of the storage box is installed on the outer wall of the storage box, and the other end of the second steam pipe is connected to an external water vapor transport device;

[0016] It also includes two return pipes fixedly connected to the top of the water storage tank, and the return pipes connect the water storage tank with the inside of the deaerator head to form a steam return channel.

[0017] Preferably, the two reflux pipes are symmetrically arranged about the center of the bottom projection circle of the deaerator head, and the two are not on the same axis.

[0018] Preferably, the inner bottom of the deoxidation head is set to be a conical surface.

[0019] Preferably, the bottom of the fixed tube is fixedly connected to a bottom seal, the bottom seal is annular, the outer wall of the heat exchange tube is fixedly connected to a rotating plate, the rotating plate is installed in the bottom seal opening area, and the rotating plate is rotatably connected to the bottom seal, a plurality of second water outlets are opened on the outside of the rotating plate, and a second spiral plate is fixed to the outer wall of the heat exchange tube below the first spiral plate, and the second spiral plate has a rotation direction opposite to that of the first spiral plate;

[0020] A plurality of third steam outlets are provided at the bottom of the outer wall of the heat exchange tube.

[0021] Preferably, a filler layer is installed inside the water inlet pipe.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] The present invention allows the boiler feed water to flow into the internal cavity of the heat exchanger from the first water outlet through the water inlet pipe, thereby entering the internal cavity of the fixed pipe from the water inlet, and falling to the upper surface of the first spiral plate, and then slowly flowing from the upper surface of the first spiral plate to the bottom of the fixed pipe for discharge, which greatly increases the contact time between the boiler feed water and water vapor, so that the dissolved oxygen in the water can overflow more effectively. In addition, since water vapor is continuously injected into the fixed pipe, the temperature is higher than that of the inside of the heat exchanger, so that the water inside the heat exchanger can be preheated and the heat preservation effect is achieved, thereby preventing the boiler feed water from circulating in the pipeline and causing heat loss so that the temperature is low, thereby avoiding negative effects on subsequent deoxygenation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A perspective view of the present invention;

[0025] Figure 2 It is a front view of the present invention;

[0026] Figure 3 It is a right side view of the present invention;

[0027] Figure 4 It is a front cross-sectional view of the present invention;

[0028] Figure 5 is a cross-sectional view of a fixed pipe in the present invention;

[0029] Figure 6 Schematic diagram of the water vapor route in the present invention;

[0030] Figure 7 is a top cross-sectional view of the present invention;

[0031] Figure 8 It is a schematic diagram of the return pipeline of the present invention.

[0032] In the figure: 1. water storage tank; 2. deaerator head; 3. oxygen outlet pipe; 4. first steam pipe; 5. reflux pipe; 6. second steam pipe; 7. water inlet pipe; 8. storage tank; 9. connecting pipe; 10. heat exchange body; 11. fixed pipe; 12. heat exchange pipe; 13. first water outlet; 14. first steam outlet; 15. steam inlet; 16. second steam outlet; 17. bottom cover; 18. rotating plate; 19. second water outlet; 20. third steam outlet; 21. rotating blade; 22. sealing chamber; 23. water inlet; 24. packing layer; 25. first spiral plate; 26. sealing body; 27. second spiral plate. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] See also Figures 1 to 8 The present invention provides a technical solution: a thermal deaerator for a boiler heating system, comprising a deaerator head 2, a water storage tank 1 is fixedly connected to the bottom of the deaerator head 2, and a connecting pipe 9 connected to the water storage tank 1 is fixedly installed at the bottom of the deaerator head 2, an oxygen outlet pipe 3 connected to the outside is fixedly connected to the top of the deaerator head 2, a plurality of first steam pipes 4 capable of transporting external water vapor to the deaerator head 2 are installed on the outer wall of the deaerator head 2, a water inlet pipe 7 capable of transporting external boiler feed water to the deaerator head 2 is fixedly installed on the outer wall of the deaerator head 2, and a plurality of first water outlets 13 are opened on the outer wall of the water inlet pipe 7 extending into the deaerator head 2;

[0035] It also includes a deceleration component that can prolong the contact time between the water flowing out of the first water outlet 13 and the water vapor in the deaerator head 2.

[0036] When the device is in use, water vapor is introduced into the deaerator head 2 from the first steam pipe 4, and boiler feed water that needs to be deoxygenated is introduced into the deaerator head 2 from the water inlet pipe 7. The contact time of the boiler feed water with the water vapor is increased under the action of the speed reducer. In this process, the evaporation amount of water vapor increases continuously, so that the partial pressure of water vapor on the liquid surface increases, and the partial pressure of other gases decreases continuously, and they are discharged in time after escaping from the water. When the water is heated to the saturation temperature under the pressure of the deaerator, the pressure of water vapor will be close to the total pressure on the water surface. At this time, the partial pressure of other gases on the water surface approaches zero, so the gas dissolved in the water will escape from the water and be removed, and discharged from the oxygen outlet pipe 3 at the top of the deaerator head 2. The water after the deoxygenation process is completed will be discharged from the connecting pipe 9 into the water storage tank 1 for storage for use when needed.

[0037] The deoxygenation process requires a certain amount of time. If the contact time is too short, the dissolved oxygen in the water cannot escape completely, which will affect the deoxygenation effect. In this case, a deceleration device is designed to extend the contact time between the water flowing out of the first water outlet 13 and the water vapor in the deoxygenation head 2, thereby improving the deoxygenation effect and preventing the dissolved oxygen in the water from chemically reacting with the metal to cause corrosion and damage to the boiler equipment and pipelines, thereby improving the thermal efficiency of the boiler and the safety of operation.

[0038] Further, the deceleration assembly includes a heat exchanger 10 fixedly mounted on the inner wall of the deaerator head 2 through a bracket, the heat exchanger 10 is provided with an internal hollow cavity, the first water outlet 13 of the water inlet pipe 7 extends into the heat exchanger 10, a plurality of fixed pipes 11 vertically penetrating the heat exchanger 10 are fixedly mounted in the heat exchanger 10, a plurality of water inlets 23 leading to the interior of the heat exchanger 10 are opened on the inner wall of the fixed pipe 11 located in the heat exchanger 10, a plurality of second steam outlets 16 are opened on the top of the fixed pipe 11, a rotatable heat exchanger 12 is installed in the center of the fixed pipe 11, a first spiral plate 25 in contact with the inner wall of the fixed pipe 11 is fixedly mounted on the outer wall of the heat exchanger 12, and the bottom of the fixed pipe 11 can discharge water in the fixed pipe 11;

[0039] It also includes an injection assembly that enables the water vapor entering from the first steam pipe 4 to be transported upward from the bottom of the fixed pipe 11.

[0040] See also Figure 4 and Figure 5, water vapor is continuously injected into the internal cavity of the fixed tube 11, and the boiler water entering from the water inlet pipe 7 will flow into the internal cavity of the heat exchanger 10 from the first water outlet 13, thereby entering the internal cavity of the fixed tube 11 from the water inlet 23, and falling to the upper surface of the first spiral plate 25, and then slowly flowing from the upper surface of the first spiral plate 25 to the bottom of the fixed tube 11 for discharge, which greatly increases the contact time between the boiler feed water and the water vapor, so that the dissolved oxygen in the water can overflow more effectively. In addition, since water vapor is continuously injected into the fixed tube 11, the temperature is higher than that of the inside of the heat exchanger 10, and the water inside the heat exchanger 10 can also be preheated to reach the saturation temperature under the pressure inside the deaerator head, and achieve the effect of heat preservation.

[0041] During this process, the jet assembly will continuously input the water vapor in the first steam pipe 4 into the internal cavity of the fixed pipe 11, and transport it upward from the bottom of the fixed pipe 11, heating and deoxygenating the boiler feed water along the way, and in the process of upward transportation, it will slow down the boiler feed water flowing on the upper surface of the first spiral plate 25, so that the water vapor and water have enough time to contact, so as to fully take away the dissolved oxygen in the water, and discharge it into the deaerator head 2 from the second steam outlet 16, and then discharge the water vapor and oxygen from the oxygen outlet pipe 3 at the top of the deaerator head 2.

[0042] Furthermore, the heat exchange tube 12 is driven to rotate by the external structure, driving the first spiral plate 25 to rotate, and the boiler feed water is transported upward through the first spiral plate 25, so that the boiler feed water flowing on the surface of the first spiral plate 25 is continuously displaced upward, thereby increasing the time for the boiler feed water to flow to the bottom of the fixed tube 11, and while the first spiral plate 25 drives the boiler feed water on its surface to rotate, the water on its surface will also fluctuate, further allowing the water vapor entering the fixed tube 11 to fully contact with the boiler feed water for a longer time, so that the dissolved oxygen in the water can be discharged to the greatest extent.

[0043] It is worth mentioning that the outlet of the oxygen outlet pipe 3 can be connected to a steam recovery device to separate the exhausted oxygen and steam and collect the steam to prevent excessive loss of water vapor and waste of resources.

[0044] Furthermore, the jet assembly includes a cavity opened inside the heat exchange tube 12, a steam inlet 15 connected to the internal cavity of the heat exchange tube 12 is opened on the outer wall of the heat exchange tube 12, a cavity is also opened inside the first spiral plate 25, and the cavity inside the first spiral plate 25 is connected to the internal cavity of the heat exchange tube 12, and a plurality of first steam outlets 14 connected to the internal cavity of the first spiral plate 25 are opened on the upper surface of the first spiral plate 25;

[0045] The injection assembly also includes a connection portion that enables water vapor in the first steam pipe 4 to enter from the steam inlet 15 .

[0046] See also Figure 5 as well as Figure 6 After the water vapor enters the internal cavity of the heat exchange tube 12 from the steam inlet 15 through the connection part, the water vapor will move downward under the action of pressure and enter the cavity in the first spiral plate 25, and then be discharged from the first steam outlet 14 opened on the upper surface of the first spiral plate 25, and fully contact with the boiler feed water flowing on the surface of the first spiral plate 25. In the process of the water vapor being discharged from the first steam outlet 14, an upward impact force will be exerted on the boiler feed water flowing on the surface of the first spiral plate 25, which not only reduces the flow rate of the boiler feed water on the surface of the first spiral plate 25, but also makes the boiler feed water continuously churn, thereby increasing the contact area between the water vapor and the boiler feed water. In addition, the water vapor passing from below the boiler feed water can better bring out the dissolved oxygen that has been discharged out of the water, and then be discharged from the second steam outlet 16 at the top of the fixed tube 11.

[0047] Furthermore, the connecting portion includes a sealing body 26 fixedly installed in the fixed pipe 11, the first steam pipe 4 penetrates into the fixed pipe 11 and is connected to the inside of the sealing body 26, the heat exchange tube 12 passes through the sealing body 26 and is rotatably connected to the penetration point of the sealing body 26, and a sealed cavity 22 is formed between the inner wall of the sealing body 26 and the outer wall of the heat exchange tube 12, and the steam inlet 15 is located in the sealed cavity 22.

[0048] See also Figure 4 as well as Figure 7 The sealing body 26 and the outer wall of the heat exchange tube 12 form a sealed cavity 22. The water vapor introduced from the first steam pipe 4 will enter the sealed cavity 22, and then enter the heat exchange tube 12 from the sealed cavity 22 through the steam inlet 15 to complete the above-mentioned deoxygenation work.

[0049] Furthermore, a plurality of rotating blades 21 are fixedly mounted on the outer wall of the heat exchange tube 12 in the sealing cavity 22 , the steam inlet 15 is located between two adjacent rotating blades 21 , and the first steam pipe 4 and the sealing body 26 are tangentially connected.

[0050] See also Figure 5 The water vapor entering from the first steam pipe 4 will enter the sealed cavity 22, and the first steam pipe 4 and the sealing body 26 are designed to be tangent. The water vapor blown into the sealed cavity 22 will continuously push the rotating blades 21 on one side, so that the rotating blades 21 drive the heat exchange tube 12 to rotate, and then the heat exchange tube 12 drives the first spiral plate 25 to rotate, so as to achieve the purpose of allowing the water vapor entering the fixed pipe 11 to fully contact with the boiler feed water for a longer time.

[0051] Furthermore, a storage box 8 is fixedly connected to the bottom of the water storage tank 1, and a second steam pipe 6 communicating with the interior of the storage box 8 is installed on the outer wall of the storage box 8, and the other end of the second steam pipe 6 is connected to an external water vapor delivery device;

[0052] It also includes two reflux pipes 5 fixedly connected to the top of the water storage tank 1, and the reflux pipes 5 connect the water storage tank 1 with the inside of the deaerator head 2 to form a steam reflux channel.

[0053] Providing a storage box 8 in the water tank 1 can keep the boiler feed water in the water tank 1 warm, and the water vapor discharged from the storage box 8 can deoxygenate the boiler feed water in the water tank 1 again, preventing oxygen from entering the water tank 1 through the connecting pipe 9 along with the boiler feed water and dissolving into the water again.

[0054] The water vapor introduced into the water storage tank 1 will return to the deaerator head 2 through the reflux pipe 5, and the water about to enter the water storage tank 1 will be deoxygenated again.

[0055] It is worth mentioning that the water vapor discharged from the oxygen outlet pipe 3 can be separated from the oxygen and heated before being connected to the second steam pipe 6 again, so that the discharged water vapor can be reused for a second time, thereby increasing the water vapor utilization efficiency and preventing waste of resources.

[0056] Furthermore, the two reflux pipes 5 are symmetrically arranged about the center of the bottom projection circle of the deaerator head 2, and the two are not on the same axis.

[0057] See also Figure 8 The two reflux pipes 5 are symmetrically arranged about the center of the bottom projection circle of the deaerator head 2, and the two are not on the same axis, so that the airflow formed by the refluxed water vapor in the water storage tank 1 can drive the boiler feed water at the bottom of the deaerator head 2 to rotate, so that the boiler feed water that is about to enter the water storage tank 1 from the connecting pipe 9 forms a vortex, accelerates the process of the boiler feed water that has completed the deaerator process entering the water storage tank 1, and prevents the oxygen that is not discharged in time in the deaerator head 2 from dissolving into the water again and being discharged into the water storage tank 1.

[0058] Furthermore, the inner bottom of the deoxidizing head 2 is configured as a conical surface.

[0059] The bottom of the deaerator head 2 is set to a conical surface, and combined with the high pressure environment inside the deaerator head 2, the deaerated water in the deaerator head 2 can be further accelerated to flow into the water storage tank 1.

[0060] Further, a bottom cover 17 is fixedly connected to the bottom of the fixed tube 11, and the bottom cover 17 is annular. A rotating plate 18 is fixedly connected to the outer wall of the heat exchange tube 12, and the rotating plate 18 is installed in the opening area of ​​the bottom cover 17, and the rotating plate 18 is rotatably connected to the bottom cover 17. A plurality of second water outlets 19 are opened outside the rotating plate 18. A second spiral plate 27 is fixed to the outer wall of the heat exchange tube 12 below the first spiral plate 25, and the second spiral plate 27 has a rotation direction opposite to that of the first spiral plate 25.

[0061] A plurality of third steam outlets 20 are formed at the bottom of the outer wall of the heat exchange tube 12 .

[0062] See also Figure 5 The second spiral plate 27, which rotates in the opposite direction to the first spiral plate 25, accelerates the boiler feed water in the fixed pipe 11 to flow to the bottom cover 17 when rotating, preventing the boiler feed water from staying in the fixed pipe 11 for too long and causing the exhausted oxygen to dissolve again therein.

[0063] As the heat exchange tube 12 rotates, the rotating plate 18 is driven to rotate. When the boiler feed water in the fixed tube 11 flows to the bottom cover 17, it will be rotated and thrown out from the second water outlet 19 by the rotating plate 18, so that the discharged water forms a water skirt shape, and a part of the water vapor inside the heat exchange tube 12 will be ejected from the third steam outlet 20, so as to deoxygenate the formed water skirt-shaped boiler feed water at a deeper level, and the discharged oxygen can be transported upward to prevent the oxygen from being retained at the bottom of the deaerator head 2 due to untimely discharge and then dissolving into the water again.

[0064] Furthermore, a filler layer 24 is installed inside the water inlet pipe 7 .

[0065] The packing layer 24 can effectively remove impurities in the boiler feed water and prevent the impurities from accumulating in the deaerator head 2 , thereby interfering with the deoxidation efficiency of the subsequent deaerator head 2 .

[0066] The standard parts used in this embodiment can be purchased directly from the market, and the non-standard structural components recorded in the specification and the drawings can also be directly processed according to the existing technical common sense. At the same time, the connection method of each component adopts the mature conventional means in the prior art, and the machinery, parts and equipment all adopt the conventional models in the prior art, so no specific description will be given here.

[0067] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A thermal deaerator for a boiler heating system, comprising a deaerator head (2), characterized in that: The bottom of the deaerator head (2) is fixedly connected to a water storage tank (1), and a connecting pipe (9) communicating with the water storage tank (1) is fixedly installed at the bottom of the deaerator head (2); the top of the deaerator head (2) is fixedly connected to an oxygen outlet pipe (3) communicating with the outside; the outer wall of the deaerator head (2) is fixedly installed with a plurality of first steam pipes (4) capable of conveying external water vapor to the deaerator head (2); the outer wall of the deaerator head (2) is fixedly installed with a water inlet pipe (7) capable of conveying external boiler feed water to the deaerator head (2); and the outer wall of the water inlet pipe (7) extending into the deaerator head (2) is provided with a plurality of first water outlets (13); It also includes a deceleration component capable of prolonging the contact time between the water flowing out of the first water outlet (13) and the water vapor in the deaerator head (2); The deceleration assembly comprises a heat exchanger (10) fixedly mounted on the inner wall of the deaerator head (2) through a bracket, the heat exchanger (10) being provided with an internal hollow cavity, the first water outlet (13) of the water inlet pipe (7) extending into the heat exchanger (10), a plurality of fixed pipes (11) vertically penetrating the heat exchanger (10) being fixedly mounted in the heat exchanger (10), the inner wall of the fixed pipe (11) located in the heat exchanger (10) being provided with a plurality of water inlets (23) leading to the interior of the heat exchanger (10), a plurality of second steam outlets (16) being provided at the top of the fixed pipe (11), a rotatable heat exchanger pipe (12) being mounted in the center of the interior of the fixed pipe (11), a first spiral plate (25) being fixedly mounted on the outer wall of the heat exchanger pipe (12) and being in contact with the inner wall of the fixed pipe (11), and the bottom of the fixed pipe (11) being capable of discharging water in the fixed pipe (11); It also includes an injection assembly capable of transporting the water vapor entering from the first steam pipe (4) upward from the bottom of the fixed pipe (11).

2. The thermal deaerator for a boiler heating system according to claim 1, characterized in that: The jet assembly comprises a cavity opened inside the heat exchange tube (12); the outer wall of the heat exchange tube (12) is provided with a steam inlet (15) connected to the inner cavity thereof; the first spiral plate (25) is also provided with a cavity inside thereof, and the cavity inside the first spiral plate (25) is connected to the inner cavity of the heat exchange tube (12); the upper surface of the first spiral plate (25) is provided with a plurality of first steam outlets (14) connected to the inner cavity thereof; The injection assembly also includes a connection portion that enables water vapor in the first steam pipe (4) to enter from the steam inlet (15).

3. The thermal deaerator for a boiler heating system according to claim 2, characterized in that: The connection portion comprises a sealing body (26) fixedly installed in the fixed pipe (11); the first steam pipe (4) penetrates into the fixed pipe (11) and communicates with the interior of the sealing body (26); the heat exchange tube (12) passes through the sealing body (26) and is rotatably connected to the penetration point of the sealing body (26); a sealed cavity (22) is formed between the inner wall of the sealing body (26) and the outer wall of the heat exchange tube (12); and the steam inlet (15) is located in the sealed cavity (22).

4. The thermal deaerator for a boiler heating system according to claim 3, characterized in that: A plurality of rotating blades (21) are fixedly mounted on the outer wall of the heat exchange tube (12) in the sealed cavity (22); the steam inlet (15) is located between two adjacent rotating blades (21); and the first steam pipe (4) and the sealing body (26) are designed to be tangentially connected.

5. The thermal deaerator for a boiler heating system according to claim 1, characterized in that: The bottom of the water storage tank (1) is fixedly connected to a storage box (8), the outer wall of the storage box (8) is installed with a second steam pipe (6) communicating with the interior thereof, and the other end of the second steam pipe (6) is connected to an external water vapor transport device; It also comprises two return pipes (5) fixedly connected to the top of the water storage tank (1), and the return pipes (5) connect the water storage tank (1) with the inside of the deaerator head (2) to form a steam return channel.

6. The thermal deaerator for a boiler heating system according to claim 5, characterized in that: The two reflux pipes (5) are arranged symmetrically about the center of the bottom projection circle of the deaerator head (2), and the two are not on the same axis.

7. The thermal deaerator for a boiler heating system according to claim 1, characterized in that: The inner bottom of the deoxidizing head (2) is configured as a conical surface.

8. The thermal deaerator for a boiler heating system according to claim 1, characterized in that: The bottom of the fixed tube (11) is fixedly connected to a bottom seal (17), the bottom seal (17) is annular, the outer wall of the heat exchange tube (12) is fixedly connected to a rotating plate (18), the rotating plate (18) is installed in the opening area of ​​the bottom seal (17), and the rotating plate (18) is rotatably connected to the bottom seal (17), a plurality of second water outlets (19) are provided on the outside of the rotating plate (18), and a second spiral plate (27) is fixed to the outer wall of the heat exchange tube (12) below the first spiral plate (25), and the second spiral plate (27) has a rotation direction opposite to that of the first spiral plate (25); A plurality of third steam outlets (20) are provided at the bottom of the outer wall of the heat exchange tube (12).

9. The thermal deaerator for a boiler heating system according to any one of claims 1 to 8, characterized in that: A packing layer (24) is installed inside the water inlet pipe (7).

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