Deoxidizing device and steam generator with same

Abstract

The invention provides a deoxygenization device and a steam generator with the deoxygenization device, the deoxygenization device is arranged in a steam generation cavity of a target workpiece, the deoxygenization device comprises a flow mixing component arranged in the steam generation cavity, the flow mixing component comprises a first port and a second port which are oppositely arranged in the vertical direction, the first port is used for discharging gas, and the second port is used for discharging gas; the second port is used for introducing first heating steam, and the second port is communicated with the steam generation cavity; a liquid inlet part is further arranged on the flow mixing component, the liquid inlet part is located at the end, close to the first end opening, of the flow mixing component, and the liquid inlet part is used for introducing liquid to be deoxygenated into the flow mixing component, so that the first heating steam is mixed with the liquid to be deoxygenated, heats the liquid to be deoxygenated and deoxygenates the liquid to be deoxygenated in the process that the first heating steam upwards flows in the flow mixing component. The problems that in the prior art, a deoxidizing device is arranged outside the steam generator, so that a pipeline system is complex, and the installation space is occupied are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of thermal deoxidation, and in particular to a deoxidation device and a steam generator having the same. Background Art

[0002] As a traditional large-capacity evaporator, the horizontal tube full liquid evaporator is widely used in air conditioning refrigeration, heat pump heating, chemical industry and other fields due to its low cost and strong stability. When the evaporator is in operation, the liquid to be evaporated fills the shell side space outside the heat exchange tube (the liquid level is usually slightly higher than the highest point of the heat exchange tube row), and the heat released by the fluid in the tube is transferred to the liquid outside the tube through the tube wall and the fins, causing the liquid to change phase, and the gas generated by boiling heat exchange is discharged from the top of the heat exchanger.

[0003] If the horizontal tube full liquid evaporator is used as a steam generating device, the shell side space outside the heat exchange tube is boiling water, and other hot working fluids are inside the tube. The water is heated by the heat exchange tube to turn it into high-temperature steam. In the high-temperature steam heat pump unit, the steam generator is a device that directly generates steam, and its durability is closely related to the water quality in the shell. If the dissolved oxygen content in the feed water is too high, it will cause serious oxidation corrosion to the shell and tube materials, and even cause serious accidents. In the boiler system, there are many ways to remove dissolved oxygen in the feed water, such as thermal deoxygenation, vacuum deoxygenation, chemical deoxygenation, rust deoxygenation, etc. Among them, the principle of thermal deoxygenation is based on the Henry-Dalton theorem, using part of the output steam to heat the feed water to a saturated state. At this time, the solubility of oxygen in the water is zero, and the oxygen is then precipitated and discharged from the water, and the deoxygenated water is supplied to the boiler to generate steam.

[0004] Most of the existing thermal deaerators are separately arranged on the deaeration pipeline system or arranged outside the steam generating device, which not only occupies the installation space, but also increases the complexity of the pipeline system and increases the production cost. Summary of the invention

[0005] The main purpose of the present invention is to provide a deoxygenation device and a steam generator having the same, so as to solve the problem that the deoxygenation device in the prior art is arranged outside the steam generator, resulting in a complex piping system and occupying installation space.

[0006] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, there is provided a deoxygenation device, which is arranged in a steam generating chamber of a target workpiece, and the deoxygenation device comprises: a flow mixing component, which is arranged in the steam generating chamber, and the flow mixing component comprises a first port and a second port which are arranged opposite to each other in a vertical direction, the first port is used for exhausting gas, and the second port is used for introducing a first heating vapor, and the second port is connected with the steam generating chamber; a liquid inlet portion is also provided on the flow mixing component, and the liquid inlet portion is located at one end of the flow mixing component close to the first port, and the liquid inlet portion is used for introducing a liquid to be deoxygenated into the flow mixing component, so that the first heating vapor is mixed with the liquid to be deoxygenated and heats the liquid to be deoxygenated during the process of flowing upward in the flow mixing component, thereby deoxygenating the liquid to be deoxygenated.

[0007] Furthermore, the mixing flow component also includes a heating section, which is located between the liquid inlet and the second port. The deoxygenation device also includes: a heating chamber, at least part of the heating section is arranged in the heating chamber, and the heating chamber is used to pass a second heating medium to heat the liquid to be deoxygenated in the heating section.

[0008] Furthermore, the mixing flow component also includes a liquid inlet section, which is connected to the heating section, the first port is arranged at one end of the liquid inlet section away from the heating section, and the liquid inlet part is arranged on the liquid inlet section; the deoxygenation device also includes: a liquid inlet chamber, which is used to pass the liquid to be deoxygenated, the liquid inlet chamber is arranged above the heating chamber, at least part of the liquid inlet section is arranged in the liquid inlet chamber, and the liquid inlet part is connected to the liquid inlet chamber.

[0009] Furthermore, the deoxygenation device also includes: a first partition, on which a first through hole is arranged; a second partition, which is arranged below the first partition and spaced apart from the first partition, the liquid inlet chamber is arranged between the first partition and the second partition, and the second partition is provided with a second through hole arranged opposite to the first through hole, and the mixing component is sequentially passed through the first through hole and the second through hole.

[0010] Furthermore, the deoxygenation device also includes: a liquid inlet pipe, which is arranged in the liquid inlet chamber, and a plurality of liquid outlet holes are arranged at intervals along the extension direction of the liquid inlet pipe, and each liquid outlet hole is connected to the liquid inlet chamber.

[0011] Furthermore, the deoxygenation device also includes: a third partition, which is arranged below the second partition and spaced apart from the second partition, the heating chamber is arranged between the second partition and the third partition, a third through hole is arranged on the third partition, and one end of the mixing component away from the first partition is passed through the third through hole and connected to the third partition.

[0012] Furthermore, the deoxygenation device also includes: a support plate, on which a steam inlet channel and a steam outlet channel are arranged; a baffle, which is arranged opposite to and spaced apart from the support plate, and a heating chamber is arranged between the support plate and the baffle; a first guide channel, which is arranged in the heating chamber, and the first guide channel extends in a zigzag trajectory, and both ends of the first guide channel are respectively connected to the steam inlet channel and the steam outlet channel; there are multiple mixing components, and the multiple mixing components are arranged in sequence and spaced apart along the extension direction of the first guide channel.

[0013] Furthermore, the deoxygenation device also includes: a steam inlet chamber, the second port is connected to the steam inlet chamber; a first steam inlet pipe is arranged in the steam inlet chamber, and a plurality of steam outlet holes are arranged on the first steam inlet pipe, and the plurality of steam outlet holes are arranged at intervals along the extension direction of the first steam inlet pipe, and each steam outlet hole is respectively connected to the steam inlet chamber.

[0014] Furthermore, the deoxygenation device also includes: a diverter component, which is arranged below the mixing component, the diverter component is arranged opposite to and spaced from the second port, and a plurality of fourth through holes are arranged on the diverter component, and the deoxygenated liquid flowing out of the second port flows into the steam generating chamber through the fourth through holes.

[0015] Furthermore, the deoxygenation device also includes: an exhaust channel, which is arranged above the mixing component and connected to the first port; a filter component, which is arranged above the mixing component and located between the exhaust channel and the first port, and filters the liquid in the gas-liquid mixture flowing out of the first port through the filter component.

[0016] Furthermore, the liquid inlet portion includes a plurality of liquid inlet holes, which are arranged at intervals in a first spiral trajectory. The flow mixing component includes: a mixing flow pipe, on which each liquid inlet hole is arranged; a flow guiding body, which is arranged in the mixing flow pipe, and the flow guiding body extends in a second spiral trajectory along the axial direction of the mixing flow pipe, and a second flow guiding channel is arranged between the flow guiding body and the inner wall surface of the mixing flow pipe; wherein the spiral direction of the first spiral trajectory is consistent with that of the second spiral trajectory.

[0017] According to another aspect of the present invention, a steam generator is provided, comprising a shell and a deoxygenator, wherein a steam generating chamber is arranged in the shell, and the deoxygenator is arranged in the steam generating chamber, and the deoxygenator is the above-mentioned deoxygenator.

[0018] Further, the deoxygenation device is the above-mentioned deoxygenation device, the support plate includes a first steam inlet area, a steam outlet area, a second steam inlet area and a liquid outlet area, the liquid outlet area is arranged below the second steam inlet area, the steam inlet channel is arranged in the first steam inlet area, and the steam outlet channel is arranged in the steam outlet area; the second steam inlet area of ​​the support plate is provided with a plurality of fifth through holes, each of which is connected to the steam generating chamber, and the second heated steam flowing out of the steam outlet channel flows into the steam generating chamber through the fifth through hole; the liquid outlet area of ​​the support plate is provided with a plurality of sixth through holes, each of which is connected to the steam generating chamber.

[0019] Furthermore, the steam generator also includes: an end plate, which is buckled on one end of the shell, and the end plate is arranged opposite to the support plate of the deaerator to form an end chamber between the end plate and the support plate; a fourth partition plate, which is respectively connected to the end plate and the support plate, and the fourth partition plate is located between the first steam inlet area and the steam outlet area; a fifth partition plate, which is respectively connected to the end plate and the support plate, and the fifth partition plate is located between the first steam inlet area and the second steam inlet area; a sixth partition plate, which is respectively connected to the end plate and the support plate, and the sixth partition plate is located between the second steam inlet area and the liquid outlet area.

[0020] According to the technical solution of the present invention, a deoxygenation device is arranged in a steam generating chamber of a target workpiece, wherein the deoxygenation device includes a flow mixing component, which is arranged in the steam generating chamber, and the flow mixing component includes a first port and a second port which are arranged opposite to each other in a vertical direction, the first port is used to exhaust gas, and the second port is used to introduce a first heating vapor, and the second port is connected to the steam generating chamber; a liquid inlet is also provided on the flow mixing component, the liquid inlet is located at one end of the flow mixing component close to the first port, and the liquid inlet is used to introduce a liquid to be deoxygenated into the flow mixing component, so that the first heating vapor is mixed with the liquid to be deoxygenated and heats the liquid to be deoxygenated during the process of flowing upward in the flow mixing component, thereby deoxygenating the liquid to be deoxygenated. In this arrangement, the liquid to be deoxygenated flows downward along the flow mixing component under the action of its own gravity, and the first heating vapor flows from bottom to top along the flow mixing component due to its light weight, and then the first heating vapor and the liquid to be deoxygenated are mixed in the flow mixing component. At the same time, the first heating vapor heats the liquid to be deoxygenated, so that the oxygen in the liquid to be deoxygenated is precipitated, and the deoxygenated liquid directly falls into the steam generating chamber through the second port, and the oxygen is directly discharged through the first port. There is no need to separately set a deoxygenation pipeline outside the target workpiece, so that the deoxygenated liquid directly participates in the steam generating reaction in the steam generating chamber, the overall structure is simpler, and the installation space is saved. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0022] Figure 1 A schematic diagram showing the working state of the deoxygenation device according to the present invention is shown;

[0023] Figure 2 A schematic structural diagram of an embodiment of a deoxygenation device according to the present invention is shown;

[0024] Figure 3 A schematic structural diagram of a deoxygenation device according to the present invention from a first viewing angle is shown;

[0025] Figure 4A schematic structural diagram of a deoxygenation device according to a second viewing angle is shown;

[0026] Figure 5 A schematic structural diagram of a support plate of a deoxygenation device according to the present invention is shown;

[0027] Figure 6 A schematic structural diagram of a first baffle of a deoxygenation device according to the present invention is shown;

[0028] Figure 7 A schematic structural diagram of a second baffle of a deoxygenation device according to the present invention is shown;

[0029] Figure 8 A schematic structural diagram of a third baffle of a deoxygenation device according to the present invention is shown;

[0030] Fig. 9 A schematic diagram showing the structure of a mixed flow pipe member of a deoxygenation device according to the present invention is shown;

[0031] Fig.10 A schematic diagram showing the structure of the flow guide body of the deaerator according to the present invention is shown;

[0032] Fig.11 A schematic structural diagram of a first diverter plate of a deoxygenation device according to the present invention is shown;

[0033] Fig.12 A schematic structural diagram of a second diverter plate of a deoxygenation device according to the present invention is shown;

[0034] Fig.13 A schematic structural diagram of a third diverter plate of a deaerator according to the present invention is shown;

[0035] Fig.14 A schematic diagram showing the structure of a liquid inlet pipe of a deoxygenation device according to the present invention is shown;

[0036] Fig.15 It shows a schematic structural diagram of a first steam inlet pipe of a deaerator according to the present invention;

[0037] Fig.16 A schematic structural diagram of a steam generator according to the present invention is shown.

[0038] The above drawings include the following reference numerals:

[0039] 100, target workpiece; 110, steam generating chamber; 120, shell; 323, first steam inlet area; 324, steam outlet area; 325, second steam inlet area; 326, liquid outlet area; 3250, fifth through hole; 3260, sixth through hole; 130, end plate; 140, end chamber; 150, fourth baffle; 160, fifth baffle; 170, sixth baffle; 111, heat exchange tube bundle; 112, drain pipe; 113, liquid baffle; 114, safety valve port; 115, gas outlet pipe; 116, gas-liquid filter; 180, second steam inlet pipe; 190, liquid outlet pipe;

[0040] 200, flow mixing component; 201, first port; 202, second port; 210, liquid inlet; 220, heating section; 230, liquid inlet section; 211, liquid inlet hole; 240, flow mixing pipe; 250, flow guide body; 260, second flow guide channel;

[0041] 300, heating chamber; 310, third partition plate; 311, third through hole; 320, support plate; 321, steam inlet channel; 322, steam outlet channel; 330, baffle plate; 340, first guide channel; 350, guide plate;

[0042] 400, liquid inlet chamber; 410, first partition; 411, first through hole; 420, second partition; 421, second through hole; 430, liquid inlet pipe; 431, liquid outlet;

[0043] 500, steam inlet chamber; 510, first steam inlet pipe; 511, steam outlet hole;

[0044] 600, diversion component; 610, fourth through hole; 620, first diversion plate; 630, second diversion plate; 640, third diversion plate; 710, exhaust channel; 720, filter component;

[0045] 900. Deoxygenation device. DETAILED DESCRIPTION

[0046] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0047] As mentioned in the background technology, in the existing deoxygenation equipment, most of them are equipped with a separate deoxygenation pipeline system, and a deoxygenation device is arranged on the pipeline system to carry out the deoxygenation process. However, such an arrangement increases the complexity of the pipeline system structure and occupies the installation space. Therefore, in view of the above technical problems, the deoxygenation device of the present application is directly arranged in the steam generating chamber 110, and the deoxygenation device includes a mixing component 200, the liquid to be deoxygenated enters the mixing component 200 from the first port 201, and the first heated gas enters the mixing component 200 from the second port 202. The first heated gas and the liquid to be deoxygenated can be quickly and fully mixed in the mixing component. After the first heated gas heats the liquid to be deoxygenated, the oxygen in the liquid to be deoxygenated is precipitated, and then the oxygen flows out from the first port 201, and the deoxygenated liquid falls directly into the steam generating chamber 110 through the second port 202, without the need for complex pipeline design, saving equipment installation space and reducing costs.

[0048] Please refer to Figures 1 to 15 The present application provides a deoxygenation device, which is arranged in a steam generating chamber 110 of a target workpiece 100, and the deoxygenation device includes: a flow mixing component 200, which is arranged in the steam generating chamber 110, and the flow mixing component 200 includes a first port 201 and a second port 202 which are arranged opposite to each other in a vertical direction, the first port 201 is used to discharge gas, and the second port 202 is used to pass a first heating vapor, and the second port 202 is connected to the steam generating chamber 110; a liquid inlet portion 210 is also provided on the flow mixing component 200, and the liquid inlet portion 210 is located at one end of the flow mixing component 200 close to the first port 201, and the liquid inlet portion 210 is used to pass a liquid to be deoxygenated into the flow mixing component 200, so that the first heating vapor is mixed with the liquid to be deoxygenated and heats the liquid to be deoxygenated during the process of flowing upward in the flow mixing component 200, so as to deoxygenate the liquid to be deoxygenated.

[0049] According to the deoxygenation device of the present application, it is arranged in the steam generating chamber 110 of the target workpiece 100, wherein the deoxygenation device includes a flow mixing component 200, the flow mixing component 200 is arranged in the steam generating chamber 110, the flow mixing component 200 includes a first port 201 and a second port 202 arranged opposite to each other in a vertical direction, the first port 201 is used to discharge gas, the second port 202 is used to pass a first heating vapor, and the second port 202 is connected to the steam generating chamber 110; a liquid inlet portion 210 is also provided on the flow mixing component 200, the liquid inlet portion 210 is located at one end of the flow mixing component 200 close to the first port 201, the liquid inlet portion 210 is used to pass the liquid to be deoxygenated into the flow mixing component 200, so that the first heating vapor is mixed with the liquid to be deoxygenated and heats the liquid to be deoxygenated during the process of flowing upward in the flow mixing component 200, thereby deoxygenating the liquid to be deoxygenated. In this arrangement, the liquid to be deoxygenated flows downward along the flow mixing component 200 under the action of its own gravity, and the first heating vapor flows from bottom to top along the flow mixing component 200 due to its light weight, and then the first heating vapor is mixed with the liquid to be deoxygenated in the flow mixing component 200. At the same time, the first heating vapor heats the liquid to be deoxygenated to precipitate oxygen in the liquid to be deoxygenated, and the deoxygenated liquid directly falls into the steam generating chamber 110 through the second port 202, and the oxygen is directly discharged through the first port 201. There is no need to separately set a deoxygenation pipeline outside the target workpiece 100, so that the deoxygenated liquid directly participates in the steam generating reaction in the steam generating chamber 110, and the overall structure is simpler and the installation space is saved.

[0050] Specifically, the flow mixing component 200 further includes a heating section 220, which is located between the liquid inlet 210 and the second port 202. The deoxygenation device further includes: a heating chamber 300, in which at least a portion of the heating section 220 is arranged, and the heating chamber 300 is used to pass a second heating medium to heat the liquid to be deoxygenated in the heating section 220. By setting the heating chamber 300, the second heating medium and the flow mixing component 200 are heat exchanged, and the liquid to be deoxygenated is further heated to achieve double heating, which greatly improves the deoxygenation efficiency and speed. In addition, the design of the heating chamber 300 reduces the loss of heat during the heat transfer process, because the second heating medium directly acts on the flow mixing component 200, avoiding heat loss caused by additional heat transfer media or pipelines, and improving the overall thermal efficiency of the system. The heating section 220 is arranged between the liquid inlet 210 and the second port 202 to prevent the liquid to be deoxygenated from flowing into the heating chamber 300, causing liquid overflow.

[0051] like Figure 3As shown, the mixing component 200 also includes a liquid inlet section 230, which is connected to the heating section 220, the first port 201 is arranged at one end of the liquid inlet section 230 away from the heating section 220, and the liquid inlet portion 210 is arranged on the liquid inlet section 230; the deoxygenation device also includes: a liquid inlet chamber 400, which is used to pass the liquid to be deoxygenated, the liquid inlet chamber 400 is arranged above the heating chamber 300, at least a part of the liquid inlet section 230 is arranged in the liquid inlet chamber 400, and the liquid inlet portion 210 is connected to the liquid inlet chamber 400.

[0052] The liquid inlet section 230 is connected to the heating section 220, and the first port 201 is arranged at the far end of the liquid inlet section 230, so that the liquid to be deoxygenated can flow smoothly along a predetermined path before entering the mixing flow component 200, avoiding direct impact on the heating section, thereby improving the preheating uniformity and heating efficiency of the liquid. The first port 201 is located at the top of the liquid inlet section 230, which helps prevent the heated gas from flowing back from the liquid inlet 210, ensuring the unidirectional flow of gas and liquid in the mixing flow component, and improving the stability and safety of the system. The independent design of the liquid inlet chamber 400 and the heating chamber 300 allows the operator to adjust the medium parameters (such as temperature, pressure, etc.) in the two chambers separately to adapt to different working conditions and requirements, thereby improving the adaptability and operational flexibility of the deoxygenation device. By designing the liquid inlet chamber 400 above the heating chamber 300, the deoxygenation device can be compactly arranged in the vertical direction, reducing the footprint of the equipment. The direct connection between the liquid inlet part 210 and the liquid inlet chamber 400 simplifies the liquid introduction path in the system, reduces connecting pipes and accessories, reduces system complexity, and also helps to reduce potential leakage points, thereby enhancing the overall sealing and reliability of the system.

[0053] In the specific implementation process, the deoxygenation device further includes: a first partition 410, on which a first through hole 411 is provided; a second partition 420, which is arranged below the first partition 410 and spaced apart from the first partition 410; a liquid inlet chamber 400 is arranged between the first partition 410 and the second partition 420; a second through hole 421 arranged opposite to the first through hole 411 is provided on the second partition 420; and the flow mixing component 200 is sequentially inserted into the first through hole 411 and the second through hole 421. The liquid inlet chamber 400 is formed by the first partition 410 and the second partition 420; the first partition 410 and the second partition 420 are positioned by the first through hole 411 and the second through hole 421, which effectively enhances the structural stability of the flow mixing component 200 in the steam generator, avoids positional displacement or damage caused by vibration or fluid impact, and improves the reliability and service life of the equipment. The spacing design of the first partition 410 and the second partition 420 forms a relatively closed space, which helps to optimize the thermal distribution in the heating chamber 300 and the liquid inlet chamber 400. The structure of the partition also helps to prevent unnecessary mixing between the heating medium and the liquid to be deoxygenated.

[0054] like Figure 2 and Fig.14 As shown, the deoxygenation device also includes: a liquid inlet pipe 430, which is arranged in the liquid inlet chamber 400, and a plurality of liquid outlet holes 431 are arranged on the liquid inlet pipe 430, and the plurality of liquid outlet holes 431 are arranged at intervals along the extension direction of the liquid inlet pipe 430, and each liquid outlet hole 431 is connected to the liquid inlet chamber 400. The plurality of liquid outlet holes 431 are arranged at intervals along the extension direction of the liquid inlet pipe 430, which can ensure that the liquid to be deoxygenated is evenly distributed in the entire chamber space when entering the liquid inlet chamber 400, and the evenly distributed liquid can more fully utilize the heat of the second heating medium, avoid heat waste, reduce energy consumption, improve energy utilization efficiency, avoid local overheating or overcooling, and improve the uniformity and preheating effect of the liquid when contacting with the second heating medium. Through the arrangement of the plurality of liquid outlet holes on the liquid inlet pipe, the liquid to be deoxygenated enters the liquid inlet chamber 400 in a finer stream, which increases the contact area and contact opportunity between the liquid and the heating medium, thereby significantly enhancing the heat exchange efficiency and accelerating the preheating and deoxygenation process of the liquid. Compared with directly introducing the liquid into the heating chamber, the provision of the liquid inlet pipe 430 and the plurality of liquid outlet holes 431 can reduce the direct impact of the deoxygenated liquid on the mixing component 200 and the heating section 220, thereby reducing the equipment vibration and noise caused by the liquid impact, and improving the stability of the equipment and the comfort of the working environment.

[0055] Furthermore, the deoxygenation device further includes: a third partition plate 310, which is arranged below the second partition plate 420 and spaced apart from the second partition plate 420; a heating chamber 300 is arranged between the second partition plate 420 and the third partition plate 310; a third through hole 311 is arranged on the third partition plate 310; an end of the flow mixing component 200 away from the first partition plate 410 is passed through the third through hole 311 and connected to the third partition plate 310. The heating chamber 300 is located between the second partition plate 420 and the third partition plate 310. This design ensures that the heating chamber is in close contact with the heating section 220 of the flow mixing component 200, thereby improving the heat exchange efficiency; at the same time, due to the positioning of the heating chamber, the flow direction and distribution of the heating medium can be better controlled to avoid heat waste. The third partition 310 is spaced apart from the second partition 420, providing a stable support for the heating chamber 300. Meanwhile, the third through hole 311 on the third partition 310 is used to fix the flow mixing component 200, which enhances the overall structural stability and mechanical strength of the deoxygenation device and reduces the risk of damage caused by vibration or thermal expansion and contraction during operation. The third partition 310 and the second partition 420 form a closed heating environment, which helps to reduce heat loss and maintain the temperature inside the heating chamber 300, thereby improving the overall energy efficiency.

[0056] In this application, if Figure 5 As shown, the deoxygenation device also includes: a support plate 320, on which a steam inlet channel 321 and a steam outlet channel 322 are arranged; a baffle 330, which is arranged opposite to and spaced from the support plate 320, and the heating chamber 300 is arranged between the support plate 320 and the baffle 330; a first guide channel 340, which is arranged in the heating chamber 300, and the first guide channel 340 extends in a zigzag trajectory, and the two ends of the first guide channel 340 are respectively connected to the steam inlet channel 321 and the steam outlet channel 322; there are multiple mixing components 200, and the multiple mixing components 200 are sequentially spaced along the extension direction of the first guide channel 340. The steam inlet channel 321 and the steam outlet channel 322 arranged on the support plate 320, and the baffle 330 matched therewith, form the heating chamber 300. This design ensures that the second heating medium is more evenly distributed in the heating chamber 300, avoids local overheating, and improves the thermal energy utilization efficiency and the consistency of the deoxygenation effect. The design of the zigzag first flow guide channel 340 increases the contact area and contact time between the heating medium and the flow mixing component 200, thereby improving the heat exchange efficiency. The extended path of the zigzag trajectory enables the heating medium to fully heat the flow mixing component 200, ensuring that the liquid to be deoxygenated can obtain sufficient heat to promote the escape of oxygen when passing through the flow mixing component 200. The setting of the support plate 320 and the baffle 330 not only provides a stable support for the flow mixing component 200, but also plays a role in enhancing the structural stability and durability of the equipment. This structural design helps to extend the service life of the deoxygenation device and reduce the maintenance frequency.

[0057] Specifically, Figure 4 As shown, a plurality of guide plates 350 are arranged in the heating chamber 300, and the plurality of guide plates 350 are arranged in sequence along a zigzag trajectory to form a first guide channel 340 between the support plate 320 and the baffle plate 330. This arrangement avoids mixing of the second heating medium in the steam inlet channel 321 and the steam outlet channel 322, which is conducive to setting the steam inlet channel 321 and the steam outlet channel 322 on the support plate 320 at the same time.

[0058] In the present application, the deoxygenation device further includes: a steam inlet chamber 500, the second port 202 being connected to the steam inlet chamber 500; a first steam inlet pipe 510, which is arranged in the steam inlet chamber 500, and a plurality of steam outlet holes 511 are arranged on the first steam inlet pipe 510, and the plurality of steam outlet holes 511 are arranged at intervals along the extension direction of the first steam inlet pipe 510, and each steam outlet hole 511 is respectively connected to the steam inlet chamber 500. By arranging a plurality of steam outlet holes 511 arranged at intervals on the first steam inlet pipe 510, the first heating steam can be evenly distributed around the heating section 220 of the mixing flow component 200, which helps the liquid to be evenly heated inside the heating section, avoids local overheating or uneven heating, and improves the heating efficiency and deoxygenation effect. The interval arrangement of the steam outlet holes 511 ensures that the first heating steam can enter the interior of the mixing flow component from multiple points, increases the contact area and contact points between the steam and the liquid, is conducive to improving the heat exchange efficiency, and accelerates the escape of oxygen in the liquid, thereby improving the deoxygenation speed. The first heated steam is introduced uniformly through the multiple steam outlets of the first steam inlet pipe 510, which can effectively reduce the noise and vibration caused by the high-speed injection of the steam, and improve the operational stability of the equipment. The design of the steam inlet chamber 500 and the first steam inlet pipe 510 makes the steam inlet path clearer, reduces the complexity of the pipeline, simplifies the system structure, facilitates daily maintenance and inspection, and reduces maintenance costs.

[0059] In the specific implementation process, the deoxygenation device further includes: a flow diverter 600, which is arranged below the flow mixing component 200, and the flow diverter 600 is arranged opposite to and spaced from the second port 202, and a plurality of fourth through holes 610 are arranged on the flow diverter 600, and the deoxygenated liquid flowing out of the second port 202 flows into the steam generating chamber 110 through the fourth through holes 610. The plurality of fourth through holes 610 on the flow diverter 600 can evenly distribute the deoxygenated liquid flowing out of the second port 202 of the flow mixing component 200 into the steam generating chamber 110, thereby avoiding local overheating or overcooling, ensuring the uniformity and stability of the liquid temperature inside the steam generator, and improving the evaporation efficiency and steam quality. The diversion component 600 is arranged opposite to the second port 202 and at a distance therefrom, which can prevent the high-speed deoxygenated liquid from directly impacting the bottom of the steam generating chamber 110 or other components, reducing the mechanical wear and noise caused by the impact of steam and liquid. By evenly dispersing the deoxygenated liquid, local accumulation of liquid in the steam generator can be avoided, reducing the occurrence of the "water hammer" phenomenon, improving the operating stability of the steam generator, and reducing the failure rate.

[0060] Preferably, the diverter component 600 includes a first diverter plate 620, a second diverter plate 630 and a third diverter plate 640 which are arranged in sequence along the vertical direction, and a plurality of fourth through holes 610 are respectively arranged on the first diverter plate 620, the second diverter plate 630 and the third diverter plate 640, wherein the aperture of the fourth through hole 610 on the first diverter plate 620 is D1, the aperture of the fourth through hole 610 on the second diverter plate 630 is D2, and the aperture of the third diverter plate 640 is D3, D1>D2>D3, and the fourth through holes on the first diverter plate 620 are staggered with the fourth through holes on the second diverter plate 630, and the fourth through holes on the second diverter plate 630 are staggered with the fourth through holes on the third diverter plate 640. As the aperture gradually decreases from the first diverter plate 620 to the third diverter plate 640, it can ensure that the deoxygenated liquid flowing out of the second port 202 of the mixing component 200 is evenly and gradually more densely distributed into the steam generation chamber 110, avoiding local concentration of the liquid and improving the uniformity of the distribution of the liquid in the shell heat exchange space. The gradual distribution of the aperture from large to small and the staggered arrangement of the fourth through holes 610 can increase the turbulent effect of the liquid flow, improve the heat exchange efficiency between the liquid and the medium in the shell heat exchange space, and accelerate the generation of steam.

[0061] In a specific implementation, the deoxygenation device also includes: an exhaust channel 710, which is arranged above the mixing component 200 and communicated with the first port 201; a filter component 720, which is arranged above the mixing component 200 and located between the exhaust channel 710 and the first port 201, and the liquid in the gas-liquid mixture flowing out of the first port 201 is filtered through the filter component 720. The filter component 720 is located above the mixing component 200 and between the first port 201 and the exhaust channel 710. Such a design can effectively intercept and filter the liquid in the gas-liquid mixture discharged from the mixing component 200, ensuring that only the gas component can be discharged smoothly through the exhaust channel 710, thereby improving the purity of the gas and the gas-liquid separation efficiency. The liquid separated by the filter component 720 can be recycled, avoiding the waste of residual heat and working fluid in the liquid, improving the utilization efficiency of energy, and reducing the operating cost. The existence of the exhaust channel 710 optimizes the path of gas discharge, so that the gas will not be blocked by the liquid during the discharge process, avoiding poor discharge or pressure fluctuations caused by the presence of liquid, and ensuring the stable operation of the system. The purity of the filtered gas is improved, which can reduce the instantaneous pressure change caused by the evaporation of droplets in the gas-liquid mixture at high temperature, reduce the risk of water hammer in the system, and improve the safety of operation.

[0062] In this embodiment, the liquid inlet portion 210 includes a plurality of liquid inlet holes 211, which are arranged at intervals in a first spiral trajectory, and the mixing component 200 includes: a mixing pipe 240, each of which is provided with a liquid inlet hole 211 on the mixing pipe 240; a flow guide body 250, which is provided in the mixing pipe 240, and the flow guide body 250 extends in a second spiral trajectory along the axial direction of the mixing pipe 240, and a second flow guide channel 260 is provided between the flow guide body 250 and the inner wall surface of the mixing pipe 240; wherein the spiral directions of the first spiral trajectory and the second spiral trajectory are consistent. Since the liquid inlet holes 211 are arranged along the first spiral trajectory, the liquid to be deoxygenated will flow along the spiral trajectory when injected into the mixing pipe 240, which increases the contact area and contact time between the liquid and the heating steam, improves the efficiency of gas-liquid mixing, and thus enhances the deoxygenation effect. The spiral track design helps the liquid to flow smoothly into the mixing pipe 240. Compared with the straight path, the spiral path can better disperse the impact force of the liquid entering, reduce fluid resistance, and make the liquid mix with the heating steam more smoothly. The spiral track design of the guide body 250 allows the heating steam to form a spiral flow in the second guide channel 260. This flow pattern can more evenly distribute the heating steam, optimize the heat exchange process, ensure that the liquid to be deoxygenated is fully heated, and thus improve the deoxygenation efficiency.

[0063] like Fig.16As shown, the present application also provides a steam generator, including a shell 120 and a deoxygenation device 900. A steam generating chamber 110 is provided in the shell 120. The deoxygenation device 900 is provided in the steam generating chamber 110. The deoxygenation device 900 is the deoxygenation device 900 of the above embodiment.

[0064] The deoxygenation device 900 is the deoxygenation device 900 of the above-mentioned embodiment, and the support plate 320 includes a first steam inlet area 323, a steam outlet area 324, a second steam inlet area 325 and a liquid outlet area 326, the liquid outlet area 326 is arranged below the second steam inlet area 325, the steam inlet channel 321 is arranged in the first steam inlet area 323, and the steam outlet channel 322 is arranged in the steam outlet area 324; the second steam inlet area 325 of the support plate 320 is provided with a plurality of fifth through holes 3250, each of which is connected to the steam generating chamber 110, and the second heated steam flowing out of the steam outlet channel 322 flows into the steam generating chamber 110 through the fifth through holes 3250; the liquid outlet area 326 of the support plate 320 is provided with a plurality of sixth through holes 3260, each of which is connected to the steam generating chamber 110.

[0065] The fifth through hole 3250 provided on the support plate 320 can make the second heated vapor flowing out of the first steam outlet channel 322 evenly distributed in the entire steam generating chamber 110. The sixth through hole 3260 of the liquid outlet area 326 can ensure that the liquid flowing out of the mixing component 200 can smoothly pass through the liquid outlet area back to the steam generating chamber 110, reducing the risk of liquid loss during the deoxygenation process. Through the structural design of the support plate 320, the second heated vapor can be discharged through the first steam outlet channel 322 of the steam outlet area 324 after heating the deoxygenated liquid, while the liquid is recovered to the steam generating chamber 110 through the sixth through hole 3260 of the liquid outlet area 326. This separation design reduces the waste of heat energy and improves the energy efficiency of the thermal deoxygenation device. The integrated design of the support plate 320 integrates the functions of vapor distribution, liquid recovery and thermal energy management, simplifies the internal structure of the steam generator, and reduces the number of components.

[0066] The steam generator also includes: an end plate 130, which is buckled on one end of the shell 120, and the end plate 130 is arranged opposite to the support plate 320 of the deaerator 900 to form an end chamber 140 between the end plate 130 and the support plate 320; a fourth partition plate 150, which is respectively connected to the end plate 130 and the support plate 320, and the fourth partition plate 150 is located between the first steam inlet area 323 and the steam outlet area 324; a fifth partition plate 160, which is respectively connected to the end plate 130 and the support plate 320, and the fifth partition plate 160 is located between the first steam inlet area 323 and the second steam inlet area 325; a sixth partition plate 170, which is respectively connected to the end plate 130 and the support plate 320, and the sixth partition plate 170 is located between the second steam inlet area 325 and the liquid outlet area 326. By setting the fourth, fifth and sixth baffles, the flow direction of the steam can be effectively controlled and guided, and by controlling the flow paths of the steam and liquid, the heat energy transfer efficiency is improved, the heat loss is reduced, and the steam is ensured to be evenly distributed when passing through the deaerator 900, avoiding local overheating or air flow short circuit, and improving the uniformity and efficiency of steam deoxygenation. The space between the end chamber 140 and the support plate 320, combined with the structure of the deaerator, can optimize the distribution of the liquid after deoxygenation, ensure that the liquid can evenly enter the heating area of ​​the steam generator, and improve the heating efficiency of the liquid and the generation efficiency of the steam.

[0067] The steam generator also includes a heat exchange tube bundle 111, a drain pipe 112, a liquid baffle 113, a safety valve port 114, an air outlet pipe 115 and a gas-liquid filter 116. The heat exchange tube bundle 111 is arranged at the bottom of the steam generating chamber 110, the drain pipe 112 is connected to the steam generating chamber 110, the liquid baffle 113 is arranged below the air outlet pipe 115 and the safety valve port 114, and the gas-liquid filter 116 is arranged above the heat exchange tube bundle 111.

[0068] like Fig.16 As shown, a thermal deoxidation device 900 is designed inside the steam generator shell 120, above the heat exchange tube bundle 111 and near one end of the water chamber of the tube-side air inlet pipe. Figure 2 As shown, the deionized water enters the liquid inlet chamber 400 from the liquid inlet pipe 430 on the side of the shell 120. The liquid inlet chamber 400 is composed of a first partition plate 410, a second partition plate 420, the shell 120, a support plate 320 and a baffle plate 330. Fig.14 As shown, the liquid inlet pipe 430 extends into the liquid inlet chamber 400 and is processed with a liquid outlet hole 431. The first partition plate 410 and the second partition plate 420 are respectively processed with a first through hole 411 and a second through hole 421. The flow mixing component 200 is vertically placed in the first through hole 411 and the second through hole 421, and the flow guide body 250 is arranged inside the flow mixing component 200. Figure 3 and Fig.10As shown, the mixing component 200 extends into the wall of the liquid inlet chamber 400 and is processed with spirally distributed liquid inlet holes 211. The bottom of the mixing component 200 is welded to the third partition plate 310 with the third through hole 311. The second partition plate 420 and the third partition plate 310, the shell 120, the support plate 320 and the baffle plate 330 form the heating chamber 300.

[0069] like Figure 2 As shown, the heating steam (the first heating steam in the above implementation) enters the steam inlet chamber 500 from the first steam inlet pipe 510 on the side of the shell. The steam inlet chamber 500 is composed of the third partition plate 310, the first diverter plate 620, the shell 120, the support plate 320 and the baffle plate 330. Fig.15 As shown, the first steam inlet pipe 510 extends into the steam inlet chamber 500 and a steam hole 511 is processed. The bottom of the first diverter plate 620 is a second diverter plate 630 and a third diverter plate 640. Figure 3 As shown, the fourth through holes 610 are processed on the three-layer manifold plates and are staggered. Figure 2 As shown, a filter component 720 is disposed above the flow mixing component 200 and the first partition plate 410 , and an exhaust channel 710 is disposed above the filter component 720 .

[0070] like Figure 1 As shown, desalted water enters the liquid inlet chamber 400 from the liquid outlet hole 431 on the liquid inlet pipe 430, enters the spiral flow channel (i.e., the second flow guide channel 260) from the liquid inlet hole 211 on the flow mixing component 200 in the liquid inlet chamber 400, and flows spirally from top to bottom. The heating steam enters the steam inlet chamber 500 from the steam outlet hole 511 on the first steam inlet pipe 510, enters the spiral flow channel from the bottom of the flow mixing component 200 in the steam inlet chamber 500, and flows spirally from bottom to top. Under a certain pressure difference, the desalted water is sprayed from the liquid inlet hole 211 to the spiral flow channel to form a jet, and the spiral flow channel is filled with rising heating steam. The desalted water draws in a large amount of heating steam in the spiral motion of the jet, and produces a violent mixing and heating effect in a very short time and a very small stroke, so that the water temperature is greatly increased. At the same time, the desalted water continues to spiral downward along the wall of the spiral flow channel, forming a layer of water film that is constantly expanding and thinning, increasing the contact area with the rising heating steam, which is beneficial to mass transfer and heat transfer. The heating steam quickly heats the desalted water to the saturation temperature. The escaping oxygen cannot diffuse freely in the spiral flow channel and can only be discharged from the top of the mixing component 200 with the rising steam. The rising steam carries oxygen and passes through the filter component 720 to filter the droplets and then is discharged from the exhaust channel 710. The desalted water after thermal deoxygenation passes through the first diverter plate 620, the second diverter plate 630 and the fourth through holes 610 arranged in a staggered manner on the third diverter plate 640 in turn, and enters the shell heat exchange space of the steam generator after being evenly distributed to replenish water for the steam generator.

[0071] like Figure 4 and Figure 5 As shown, a vertical guide plate 350 is arranged in the heating chamber 300 to form a baffle channel (i.e., the first guide channel 340 mentioned above), and a steam inlet channel 321 and a steam outlet channel 322 are processed on the support plate 320. The high-temperature steam in the tube side enters the heating chamber 300 through the second steam inlet pipe 180 on the water chamber through the steam inlet channel 321. The high-temperature steam in the tube side flows through the mixing component 200 during the baffle movement to further heat the desalted water in the spiral flow channel and accelerate the escape of oxygen. A water chamber partition (including the fourth partition, the fifth partition and the sixth partition) is arranged in the water chamber. The high-temperature steam in the tube side enters the water chamber from the steam outlet channel 322, and then enters the heat exchange tube bundle 111 to heat the desalted water in the shell side of the steam generator to produce steam. The high-temperature steam in the tube side is condensed and heat-exchanged in the heat exchange tube bundle 111 and then discharged from the liquid outlet pipe 190.

[0072] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0073] According to the deoxygenation device of the present application, it is arranged in the steam generating chamber 110 of the target workpiece 100, wherein the deoxygenation device includes a flow mixing component 200, the flow mixing component 200 is arranged in the steam generating chamber 110, the flow mixing component 200 includes a first port 201 and a second port 202 arranged opposite to each other in a vertical direction, the first port 201 is used to discharge gas, the second port 202 is used to pass a first heating vapor, and the second port 202 is connected to the steam generating chamber 110; a liquid inlet portion 210 is also provided on the flow mixing component 200, the liquid inlet portion 210 is located at one end of the flow mixing component 200 close to the first port 201, the liquid inlet portion 210 is used to pass the liquid to be deoxygenated into the flow mixing component 200, so that the first heating vapor is mixed with the liquid to be deoxygenated and heats the liquid to be deoxygenated during the process of flowing upward in the flow mixing component 200, thereby deoxygenating the liquid to be deoxygenated. In this arrangement, the liquid to be deoxygenated flows downward along the flow mixing component 200 under the action of its own gravity, and the first heating vapor flows from bottom to top along the flow mixing component 200 due to its light weight, and then the first heating vapor is mixed with the liquid to be deoxygenated in the flow mixing component 200. At the same time, the first heating vapor heats the liquid to be deoxygenated to precipitate oxygen in the liquid to be deoxygenated, and the deoxygenated liquid directly falls into the steam generating chamber 110 through the second port 202, and the oxygen is directly discharged through the first port 201. There is no need to separately set a deoxygenation pipeline outside the target workpiece 100, so that the deoxygenated liquid directly participates in the steam generating reaction in the steam generating chamber 110, and the overall structure is simpler and the installation space is saved.

[0074] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A deoxidation device, arranged in a steam generating chamber (110) of a target workpiece (100), characterized in that: The deoxidation device comprises: a flow mixing component (200) disposed in the steam generating chamber (110), the flow mixing component (200) comprising a first port (201) and a second port (202) disposed opposite to each other in a vertical direction, the first port (201) being used for discharging gas, the second port (202) being used for introducing a first heating vapor, and the second port (202) being in communication with the steam generating chamber (110); The flow mixing component (200) is also provided with a liquid inlet (210), and the liquid inlet (210) is located at one end of the flow mixing component (200) close to the first port (201). The liquid inlet (210) is used to introduce the liquid to be deoxygenated into the flow mixing component (200), so that the first heated vapor is mixed with the liquid to be deoxygenated and heats the liquid to be deoxygenated during the process of flowing upward in the flow mixing component (200), thereby deoxygenating the liquid to be deoxygenated.

2. The deoxidation device according to claim 1, characterized in that: The flow mixing component (200) further comprises a heating section (220), wherein the heating section (220) is located between the liquid inlet (210) and the second port (202), and the deoxygenation device further comprises: A heating chamber (300), wherein at least a portion of the heating section (220) is disposed in the heating chamber (300), and the heating chamber (300) is used to allow a second heating medium to pass through so as to heat the liquid to be deoxygenated in the heating section (220).

3. The deoxidation device according to claim 2, characterized in that: The flow mixing component (200) further comprises a liquid inlet segment (230) which is in communication with the heating segment (220); the first port (201) is arranged at an end of the liquid inlet segment (230) away from the heating segment (220); the liquid inlet portion (210) is arranged on the liquid inlet segment (230); the deoxygenation device further comprises: The liquid inlet chamber (400) is used for introducing the liquid to be deoxygenated. The liquid inlet chamber (400) is arranged above the heating chamber (300). At least a part of the liquid inlet section (230) is arranged in the liquid inlet chamber (400). The liquid inlet portion (210) is connected to the liquid inlet chamber (400).

4. The deoxidation device according to claim 3, characterized in that: The deoxidation device also includes: A first partition plate (410), wherein the first partition plate (410) is provided with a first through hole (411); The second partition (420) is arranged below the first partition (410) and spaced apart from the first partition (410); the liquid inlet chamber (400) is arranged between the first partition (410) and the second partition (420); the second partition (420) is provided with a second through hole (421) arranged opposite to the first through hole (411); and the flow mixing component (200) is sequentially penetrated in the first through hole (411) and the second through hole (421).

5. The deoxidation device according to claim 3, characterized in that: The deoxidation device also includes: A liquid inlet pipe (430) is arranged in the liquid inlet chamber (400), and a plurality of liquid outlet holes (431) are arranged on the liquid inlet pipe (430). The plurality of liquid outlet holes (431) are arranged at intervals along the extension direction of the liquid inlet pipe (430), and each of the liquid outlet holes (431) is connected to the liquid inlet chamber (400).

6. The deoxidation device according to claim 4, characterized in that: The deoxidation device also includes: The third partition (310) is arranged below the second partition (420) and is spaced apart from the second partition (420); the heating chamber (300) is arranged between the second partition (420) and the third partition (310); a third through hole (311) is arranged on the third partition (310); an end of the mixing component (200) away from the first partition (410) is passed through the third through hole (311) and is connected to the third partition (310).

7. The deoxidation device according to claim 2, characterized in that: The deoxidation device also includes: A support plate (320), wherein a steam inlet channel (321) and a steam outlet channel (322) are provided on the support plate (320); a baffle (330) disposed opposite to and spaced from the support plate (320), wherein the heating chamber (300) is disposed between the support plate (320) and the baffle (330); A first flow guiding channel (340) is arranged in the heating chamber (300), the first flow guiding channel (340) extends in a zigzag trajectory, and two ends of the first flow guiding channel (340) are respectively connected to the steam inlet channel (321) and the steam outlet channel (322); There are a plurality of flow mixing components (200), and the plurality of flow mixing components (200) are sequentially arranged at intervals along the extension direction of the first flow guiding channel (340).

8. The deoxygenation device according to claim 1, characterized in that: The deoxidation device also includes: a steam inlet chamber (500), wherein the second port (202) is in communication with the steam inlet chamber (500); A first steam inlet pipe (510) is arranged in the steam inlet chamber (500), and a plurality of steam outlet holes (511) are arranged on the first steam inlet pipe (510). The plurality of steam outlet holes (511) are arranged at intervals along an extension direction of the first steam inlet pipe (510), and each of the steam outlet holes (511) is respectively connected to the steam inlet chamber (500).

9. The deoxidation device according to claim 1, characterized in that: The deoxidation device also includes: A flow dividing component (600) is arranged below the flow mixing component (200); the flow dividing component (600) is arranged opposite to and spaced from the second port (202); a plurality of fourth through holes (610) are arranged on the flow dividing component (600); and the deoxygenated liquid flowing out of the second port (202) flows into the steam generating chamber (110) through the fourth through holes (610).

10. The deoxygenation device according to claim 1, characterized in that: The deoxidation device also includes: an exhaust channel (710) disposed above the flow mixing component (200) and communicating with the first port (201); A filter component (720) is arranged above the flow mixing component (200) and between the exhaust channel (710) and the first port (201), and the liquid in the gas-liquid mixture flowing out of the first port (201) is filtered through the filter component (720).

11. The deoxidation device according to claim 1, characterized in that: The liquid inlet portion (210) comprises a plurality of liquid inlet holes (211), and the plurality of liquid inlet holes (211) are arranged at intervals in a first spiral trajectory. The flow mixing component (200) comprises: A mixed flow pipe (240), each of the liquid inlet holes (211) being arranged on the mixed flow pipe (240); A flow guide body (250) is arranged in the mixing flow tube (240), the flow guide body (250) extends in a second spiral track along the axial direction of the mixing flow tube (240), and a second flow guide channel (260) is arranged between the flow guide body (250) and the inner wall surface of the mixing flow tube (240); The spiral directions of the first spiral trajectory and the second spiral trajectory are consistent.

12. A steam generator, comprising a shell (120) and a deoxidation device (900), wherein a steam generation chamber (110) is arranged in the shell (120), and the deoxidation device (900) is arranged in the steam generation chamber (110), characterized in that: The deoxygenation device (900) is the deoxygenation device (900) according to any one of claims 1 to 11.

13. The steam generator according to claim 12, characterized in that: The deoxygenator (900) is the deoxygenator (900) according to claim 7, the support plate (320) comprises a first steam inlet area (323), a steam outlet area (324), a second steam inlet area (325) and a liquid outlet area (326), the liquid outlet area (326) is arranged below the second steam inlet area (325), the steam inlet channel (321) is arranged in the first steam inlet area (323), and the steam outlet channel (322) is arranged in the steam outlet area (324); The second steam inlet area (325) of the support plate (320) is provided with a plurality of fifth through holes (3250), each of the fifth through holes (3250) being in communication with the steam generating chamber (110), and the second heated steam flowing out of the steam outlet channel (322) flows into the steam generating chamber (110) through the fifth through holes (3250); The liquid outlet area (326) of the support plate (320) is provided with a plurality of sixth through holes (3260), and each of the sixth through holes (3260) is connected to the steam generating chamber (110).

14. The steam generator according to claim 13, characterized in that The steam generator also includes: an end plate (130) buckled on one end of the shell (120), the end plate (130) being arranged opposite to the support plate (320) of the deoxygenation device (900) so as to form an end chamber (140) between the end plate (130) and the support plate (320); a fourth partition plate (150) connected to the end plate (130) and the support plate (320) respectively, and the fourth partition plate (150) is located between the first steam inlet area (323) and the steam outlet area (324); a fifth partition plate (160) connected to the end plate (130) and the support plate (320) respectively, and the fifth partition plate (160) is located between the first steam inlet area (323) and the second steam inlet area (325); A sixth partition plate (170) is connected to the end plate (130) and the support plate (320) respectively, and the sixth partition plate (170) is located between the second steam inlet area (325) and the liquid outlet area (326).

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