Steam generator and steam generation system

Abstract

This invention relates to the field of heat pump technology, and more particularly to a steam generator and a steam generation system. The steam generator includes: a shell, which has a first inner cavity, a second inner cavity, a steam outlet, and a first liquid inlet, wherein the first inner cavity, the second inner cavity, and the steam outlet are sequentially connected, and the first liquid inlet is connected to the second inner cavity; a steam generation assembly disposed in the first inner cavity; and a gas separation component disposed in the second inner cavity. This invention provides a steam generator that integrates thermal deoxygenation and gas-liquid separation into one unit, resulting in a simpler structure and more integrated device, solving the problems of complex equipment, poor economy, and low practicality of conventional high-temperature steam heat pump systems.

Description

Technical Field

[0001] This invention relates to the field of heat pump technology, and more particularly to a steam generator and a steam generation system. Background Technology

[0002] Current conventional high-temperature steam heat pump systems typically employ a method where a common heat exchanger heats high-temperature hot water, which then enters a flash evaporator to obtain steam. However, high-temperature hot water and high-temperature steam are highly corrosive to heat exchangers and flash evaporators, requiring additional equipment to deoxygenate the water. Furthermore, the generated steam needs to undergo gas-liquid separation to remove some of the moisture it contains. This high-temperature steam heat pump system is complex, uneconomical, and has low practicality. Summary of the Invention

[0003] This invention provides a steam generator and a steam generation system to address one of the shortcomings of the prior art. This invention provides a steam generator that integrates thermal deoxygenation and gas-liquid separation into one unit, with a simpler structure and more integrated device, solving the problems of complex equipment, poor economy, and low practicality of conventional high-temperature steam heat pump systems.

[0004] This invention provides a steam generator, comprising: The housing has a first inner cavity, a second inner cavity, a steam outlet, and a first liquid inlet. The first inner cavity, the second inner cavity, and the steam outlet are connected in sequence, and the first liquid inlet is connected to the second inner cavity. A steam generating assembly is disposed in the first inner cavity; A gas separation component is disposed in the second inner cavity.

[0005] According to a steam generator provided by the present invention, the steam generating assembly includes: Heat exchanger tubes; The liquid separator is provided with spray holes, which face the heat exchange tube.

[0006] According to a steam generator provided by the present invention, the inner wall of the heat exchange tube is provided with a groove.

[0007] According to a steam generator provided by the present invention, the outer wall of the heat exchange tube is smooth.

[0008] According to a steam generator provided by the present invention, the heat exchange tube, the liquid distribution tube and the steam outlet are arranged sequentially from bottom to top, and the cross-sectional area of ​​the second inner cavity along the steam flow direction is smaller than the cross-sectional area of ​​the first inner cavity along the steam flow direction.

[0009] According to a steam generator provided by the present invention, the liquid distribution pipe includes: The pipe body is horizontally arranged and has the spray holes; A liquid distribution plate is disposed inside the tube and extends horizontally to divide the inside of the tube into an inlet chamber and a liquid distribution chamber. The liquid distribution chamber is connected to the spray hole, and the liquid distribution plate is provided with a liquid distribution hole that is connected to the liquid distribution chamber.

[0010] According to a steam generator provided by the present invention, the diameter of the liquid distribution hole is larger than the diameter of the spray hole.

[0011] A steam generator according to the present invention further includes: The pump body is connected to the distribution pipe via an inlet pipe and to the outlet at the bottom of the housing via a return pipe. The pump body is located below the housing and is at least a set distance away from the outlet.

[0012] According to a steam generator provided by the present invention, the housing is further provided with a second liquid inlet, the second liquid inlet being connected to the second inner cavity, and the second liquid inlet being adapted to replenish condensate.

[0013] The present invention also provides a steam generating system, comprising: The steam generator as described above; compressor, Gas-liquid separator; Evaporator; The subcooler, the heat release channel of the subcooler, the heat absorption channel of the evaporator, the gas-liquid separator, the compressor and the heat exchange tube of the steam generator are sequentially connected to form a circulation loop; The liquid supply device, the heat absorption channel of the subcooler, and the first liquid replenishment port are connected in sequence.

[0014] The steam generator of the present invention mainly consists of a shell, a steam generating component and a gas separation component. The shell is divided into a first inner cavity and a second inner cavity. The steam generating component is disposed in the first inner cavity and the gas separation component is disposed in the second inner cavity. The first inner cavity and the second inner cavity are connected. A steam outlet and a first liquid replenishment port are also provided on the shell corresponding to the second inner cavity, and both are connected to the second inner cavity.

[0015] Steam generated by the steam generating assembly flows from the first inner cavity into the second inner cavity, and then exits through the steam outlet from the second inner cavity. Liquid is added into the second inner cavity through the first liquid replenishment port, and then flows from the second inner cavity into the first inner cavity, thus replenishing the steam generator. The liquid is heated by the steam in the second inner cavity, and most of the dissolved oxygen in the liquid is released and carried by the steam through the steam outlet, thereby achieving thermal deoxygenation. This reduces the scaling of high-temperature hot water in the steam generator and its corrosive effects on the steam generator. Thus, through the arrangement of the second inner cavity, the steam outlet, and the first liquid replenishment port, a deoxygenation structure is formed inside the steam generator, eliminating the need for additional deoxygenation equipment.

[0016] Furthermore, a gas separator is installed in the second inner cavity. When steam passes through the gas separator, some of the moisture carried in the steam can be effectively separated, reducing the moisture content in the steam and making the steam discharged from the outlet purer. Therefore, this invention provides a steam generator that integrates thermal deoxygenation and gas-liquid separation into one unit. It has a simpler structure and more integrated device, solving the problems of complex equipment, poor economy, and low practicality of conventional high-temperature steam heat pump systems. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of the steam generator provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the liquid distribution pipe of the steam generator provided in an embodiment of the present invention; Figure 3 This is a schematic diagram of the spray hole structure of the liquid distribution pipe of the steam generator provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of the liquid distribution plate of the liquid distribution pipe of the steam generator provided in an embodiment of the present invention; Figure 5 This is a schematic diagram of the steam generation system provided in an embodiment of the present invention.

[0019] Figure label: 100. Shell; 110. First inner cavity; 120. Second inner cavity; 130. Steam outlet; 140. First liquid inlet; 150. Liquid outlet; 160. Second liquid inlet; 170. Drain outlet; 171. Drain pipe; 172. Drain valve; 200. Steam generating assembly; 210. Heat exchange tube; 220. Liquid distribution pipe; 221. Spray hole; 222. Pipe body; 223. Liquid distribution plate; 224. Liquid distribution hole; 225. Liquid inlet chamber; 226. Liquid distribution chamber; 300. Gas separation unit; 400. Pump body; 410. Inlet pipe; 420. Return pipe; 510. Compressor; 520. Gas-liquid separator; 530. Evaporator; 540. Subcooler; 550. Liquid supply device; 551. Water supply pump; 552. Main pipeline; 553. Branch pipeline; 600, Steam generator; 700, Throttling valve. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0021] In the description of the embodiments of the present invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the present invention. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention based on the specific circumstances.

[0023] In embodiments of the present invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0024] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0025] like Figure 1 and Figure 5 As shown, an embodiment of the present invention provides a steam generator 600, including a housing 100, a steam generating assembly 200, and a gas separation component 300. The housing 100 is provided with a first inner cavity 110, a second inner cavity 120, a steam outlet 130, and a first liquid replenishment port 140. The first inner cavity 110, the second inner cavity 120, and the steam outlet 130 are sequentially connected, and the first liquid replenishment port 140 is connected to the second inner cavity 120. The steam generating assembly 200 is disposed in the first inner cavity 110, and the gas separation component 300 is disposed in the second inner cavity 120.

[0026] The steam generator 600 of this invention mainly consists of a housing 100, a steam generating component 200, and a gas separation component 300. The housing 100 is internally divided into a first inner cavity 110 and a second inner cavity 120. The steam generating component 200 is disposed in the first inner cavity 110, and the gas separation component 300 is disposed in the second inner cavity 120. The first inner cavity 110 and the second inner cavity 120 are connected. A steam outlet 130 and a first liquid replenishment port 140 are also provided on the housing 100 corresponding to the second inner cavity 120, and both are connected to the second inner cavity 120.

[0027] Steam generated by the steam generating assembly 200 flows from the first inner cavity 110 into the second inner cavity 120, and then exits from the second inner cavity 120 through the steam outlet 130. Liquid is added to the second inner cavity 120 through the first liquid replenishment port 140, and then flows from the second inner cavity 120 into the first inner cavity 110, thus replenishing the steam generator 600. The liquid is heated by the steam in the second inner cavity 120, and most of the dissolved oxygen in the liquid is released and carried by the steam through the steam outlet 130, thereby achieving thermal deoxygenation and reducing the scaling of high-temperature hot water in the steam generator 600 and its corrosive effects. Thus, through the arrangement of the second inner cavity 120, the steam outlet 130, and the first liquid replenishment port 140, a deoxygenation structure is formed in the steam generator 600, eliminating the need for additional deoxygenation equipment.

[0028] Furthermore, a gas separator 300 is installed in the second inner cavity 120. When steam passes through the gas separator 300, some of the moisture carried in the steam can be effectively separated, reducing the moisture content in the steam and making the steam discharged from the steam outlet 130 purer. Therefore, this invention provides a steam generator 600 that integrates thermal deoxygenation and gas-liquid separation, with a simpler structure and more integrated device, solving the problems of complex equipment, poor economy, and low practicality of conventional high-temperature steam heat pump systems.

[0029] In this embodiment, the gas separator 300 can adopt structures such as swirl, sedimentation, and wire mesh. When arranged in the second inner cavity 120, it can be set between the first liquid inlet 140 and the steam outlet 130, or near the steam outlet 130. During the flow of steam in the second inner cavity 120, the steam first passes through the first liquid inlet 140, that is, the steam at the highest temperature first achieves the effect of thermal deoxygenation. Then, it passes through the gas separator 300 and the gas-liquid separator 520 before being discharged from the steam outlet 130, ensuring the deoxygenation effect while reducing the amount of moisture carried in the steam.

[0030] The cyclone separator is a centrifugal separator consisting of cyclone blades, a separation chamber, and a guide tube. The cyclone blades guide the steam along a spiral path, generating centrifugal force. The separation chamber is suitable for high-speed steam rotation, where liquid water droplets, due to their higher density, are thrown towards the outer wall and collected and discharged under gravity. The separated dry steam rises from the center, while the wet droplets fall along the outer wall of the guide tube. The cyclone separator is suitable for high-velocity steam, achieving a high separation efficiency of over 95%. It has a simple structure, no moving parts, and low maintenance costs.

[0031] The sedimentation separation structure is a gravity separation system, consisting of an expansion chamber, baffles or deflectors, and a collection tank. The expansion chamber is suitable for reducing the flow velocity of steam after it enters a larger space, allowing water droplets to settle naturally due to gravity. The baffles or deflectors increase the steam path length, promoting droplet collision and aggregation. The collection tank is suitable for collecting and discharging the settled water droplets. Sedimentation separation structures are suitable for low-flow-rate steam, have a simple structure but relatively low separation efficiency (approximately 70%–85%), and are suitable for high-flow-rate steam systems with low pressure drop.

[0032] The wire mesh separation structure is a filtration separation system consisting of multiple layers of metal wire mesh, a support frame, and a drain outlet. The multiple layers of metal wire mesh are typically made of stainless steel wire woven into a mesh pattern, forming a labyrinthine flow channel. The support frame secures the wire mesh and ensures uniform steam flow. The drain outlet allows captured droplets to collect and be discharged. The wire mesh separation structure boasts extremely high separation efficiency, reaching up to 99%, making it suitable for high-purity steam applications. However, it suffers from significant pressure drop and requires regular cleaning to prevent clogging.

[0033] Combined separation structures can also be used to improve separation efficiency. Common combinations include cyclone and wire mesh separation, where cyclone separation is used for initial separation followed by fine filtration through the wire mesh; or sedimentation and wire mesh separation, where the flow rate is reduced to settle large droplets, and then the wire mesh captures small droplets. This approach balances high separation efficiency and low pressure drop, making it suitable for demanding industrial steam systems.

[0034] According to one embodiment of the present invention, the steam generating assembly 200 includes a heat exchange tube 210 and a liquid distribution tube 220. The liquid distribution tube 220 is provided with spray holes 221 facing the heat exchange tube 210.

[0035] In this embodiment, the steam generating assembly 200 consists of a heat exchange tube 210 and a liquid distribution tube 220. The liquid distribution tube 220 is provided with spray holes 221. The liquid in the liquid distribution tube 220 is sprayed onto the heat exchange tube 210 through the spray holes 221. After the liquid comes into contact with the high-temperature outer wall of the heat exchange tube 210, it absorbs heat and evaporates to form steam.

[0036] Compared to the conventional steam generator 600, which fills the evaporation chamber with liquid and then immerses the heat exchange tube 210 in the liquid for heat exchange and evaporation, this invention uses a liquid distribution pipe 220 to allow the liquid to pass through a falling film for heat exchange. The liquid is sprayed onto the heat exchange tube 210 through the spray holes 221 of the liquid distribution pipe 220, resulting in a larger heat transfer coefficient and higher heat exchange efficiency. Therefore, this invention proposes a steam generator 600 that integrates high-efficiency heat exchange, thermal deoxygenation, and gas-liquid separation.

[0037] The working principle of falling film heat exchange is as follows: liquid is evenly sprayed onto the top of heat exchange tube 210 through the distributor 220. A thin liquid film, typically 0.1~1mm thick, forms on the outer wall of the heat exchange tube 210 and flows downwards under gravity. The high-temperature refrigerant flows inside the heat exchange tube 210, releasing heat. The outer liquid film absorbs this heat and partially evaporates, contributing to steam generation. The unevaporated liquid collects at the bottom of the shell 100 and can be recycled or discharged.

[0038] According to one embodiment of the present invention, the inner wall of the heat exchange tube 210 is provided with a groove.

[0039] In this embodiment, a high-temperature refrigerant flows inside the heat exchange tube 210, keeping the entire heat exchange tube 210 at a high temperature. The inner wall of the heat exchange tube 210 is provided with grooves to increase the inner wall area of ​​the heat exchange tube 210, thereby increasing the heat exchange area between the heat exchange tube 210 and the high-temperature refrigerant, enhancing the heat exchange effect, and thus improving the evaporation effect and efficiency of the liquid sprayed by the liquid distribution tube 220.

[0040] In this embodiment, the heat exchange tube 210 is a high-efficiency heat exchange coil, and the inner tube wall is set with internal threads or has an annular groove along its axial extension direction.

[0041] According to one embodiment of the present invention, the outer wall of the heat exchange tube 210 is smooth.

[0042] In this embodiment, the outer wall of the heat exchange tube 210 is in direct contact with the liquid sprayed from the liquid distribution tube 220, and it needs to be smooth. If the liquid falling on the outer wall cannot directly absorb heat and evaporate into steam, it will be affected by gravity and immediately slide down the outer wall into the first inner cavity 110 to avoid accumulation on the outer wall and prevent scaling problems.

[0043] According to one embodiment of the present invention, the heat exchange tube 210, the liquid distribution tube 220 and the steam outlet 130 are arranged sequentially from bottom to top, and the cross-sectional area of ​​the second inner cavity 120 along the steam flow direction is smaller than the cross-sectional area of ​​the first inner cavity 110 along the steam flow direction.

[0044] In this embodiment, the first inner cavity 110, the second inner cavity 120, and the steam outlet 130 inside the shell 100 are arranged sequentially from bottom to top. That is, steam flows upward in the first inner cavity 110, passes through the second inner cavity 120, and is discharged from the uppermost steam outlet 130. Similarly, in the first inner cavity 110, the heat exchange tube 210 is also arranged below the liquid distribution tube 220. The spray holes 221 of the liquid distribution tube 220 are directly opposite the heat exchange tube 210. That is, the liquid distribution tube 220 sprays liquid downward. The liquid naturally falls onto the surface of the heat exchange tube 210 below due to gravity, which allows it to contact the heat exchanger more quickly and fully to evaporate and form steam, thereby improving the heat exchange efficiency.

[0045] In this embodiment, in the cross-section extending from bottom to top along the direction of steam flow, i.e., the shell 100, the area of ​​the first inner cavity 110 is larger than the area of ​​the second inner cavity 120. That is, after the shell 100 encloses the first inner cavity 110, the enclosed area shrinks to form the second inner cavity 120. Therefore, the steam in the first inner cavity 110 converges into the second inner cavity 120, which is equivalent to the steam flow cross-section decreasing along the steam flow direction. When the steam enters the second inner cavity 120 from the first inner cavity 110, its flow velocity increases, thereby forming a stronger shear force on the contact surface between the steam and the liquid in the second inner cavity 120. This shear force helps the liquid atomize and turbulentize, increases the contact area between the steam and the liquid, accelerates the escape of dissolved oxygen and the heat transfer of steam, and significantly improves the efficiency of deoxygenation and heat exchange.

[0046] like Figure 2 , Figure 3 and Figure 4 As shown, according to an embodiment of the present invention, the liquid distribution pipe 220 includes a pipe body 222 and a liquid distribution plate 223. The pipe body 222 is horizontally arranged and has a spray hole 221. The liquid distribution plate 223 is disposed inside the pipe body 222 and extends in the horizontal direction to divide the inside of the pipe body 222 into a liquid inlet chamber 225 and a liquid distribution chamber 226. The liquid distribution chamber 226 communicates with the spray hole 221. The liquid distribution plate 223 has a liquid distribution hole 224 communicating with the liquid distribution chamber 226.

[0047] In this embodiment, the liquid distribution pipe 220 mainly consists of a pipe body 222 and a liquid distribution plate 223. The liquid distribution pipe 220 is located above the heat exchange tube 210. To ensure that the heat exchange tube 210 forms the largest and most concentrated spray range, the liquid distribution pipe 220 is set horizontally. The liquid distribution plate 223 is set horizontally inside the pipe body 222, dividing the pipe body 222 into an upper liquid inlet chamber 225 and a lower liquid distribution chamber 226. The liquid distribution plate 223 is provided with a liquid distribution hole 224, which connects the liquid distribution chamber 226 and the liquid inlet chamber 225. The liquid first enters the liquid inlet chamber 225 and flows into the liquid distribution chamber 226 through the liquid distribution hole 224. The lower part of the pipe body 222 is provided with a spray hole 221, and the liquid in the liquid distribution chamber 226 is sprayed onto the heat exchanger through the spray hole 221.

[0048] The liquid distribution holes 224 on the liquid distribution plate 223 are evenly distributed, and the spray holes 221 at the bottom of the tube body 222 are also evenly distributed. Thus, during the process of liquid being sprayed out from the liquid distribution tube 220, it will first pass through the liquid distribution holes 224 and then through the liquid distribution holes 221, that is, it will be divided twice. This makes the liquid distribution in the liquid distribution tube 220 more uniform, and the liquid sprayed onto the heat exchange tube 210 is also more uniform. This improves the liquid distribution effect and also makes the heat exchange more efficient. The two liquid distributions can also stabilize the pressure inside the liquid distribution tube 220, making the flow rate of the sprayed liquid more stable, and also have a certain effect of reducing noise.

[0049] According to one embodiment of the present invention, the diameter of the liquid separating hole 224 is larger than the diameter of the spray hole 221.

[0050] In this embodiment, the diameter of the spray hole 221 at the lower part of the tube 222 is smaller than the diameter of the liquid distribution hole 224 on the liquid distribution plate 223. With both the spray hole 221 and the liquid distribution hole 224 evenly distributed, the smaller diameter of the spray hole 221 increases the flow velocity of the liquid in the liquid distribution chamber 226 through the spray hole 221, as well as the fineness of the liquid flow, achieving a more dispersed and uniform spraying effect. This makes the liquid flowing out of the spray hole 221 more impactful, increasing the heat transfer coefficient of the contact evaporation between the heat exchange tube 210 and the liquid, thereby improving the heat exchange effect.

[0051] According to one embodiment of the present invention, the steam generator 600 further includes a pump body 400, which is connected to the liquid distribution pipe 220 through the liquid inlet pipe 410 and the liquid outlet 150 at the bottom of the housing 100 through the liquid return pipe 420. The pump body 400 is located below the housing 100 and is at least a set distance away from the liquid outlet 150.

[0052] In this embodiment, the steam generator 600 mainly consists of a housing 100, a steam generating component 200, a gas separation component 300, and a pump body 400. The housing 100 is provided with an inlet and an outlet 150. The outlet of the pump body 400 is connected to an inlet pipe 410. The inlet pipe 410 passes through the inlet and enters the first inner cavity 110 of the housing 100, which is connected to the liquid separation chamber 226 of the liquid separation pipe 220. The inlet of the pump body 400 is connected to a return pipe 420, which is connected to the outlet 150.

[0053] The liquid outlet 150 is located at the bottom of the housing 100, that is, the liquid outlet 150 is located on the bottom surface of the first inner cavity 110. The unevaporated liquid in the first inner cavity 110 enters the return pipe 420 through the liquid outlet 150, and then enters the pump body 400 through the return pipe 420. The pump body 400 provides power for the circulation of liquid between the housing 100 and the distribution pipe 220. The pump body 400 pumps the liquid into the distribution pipe 220 through the inlet pipe 410. The distribution pipe 220 sprays the liquid back to the heat exchanger, thereby realizing the circulation spray evaporation of liquid in the first inner cavity 110.

[0054] The pump body 400 is located below the housing 100 and at least a set distance from the outlet 150. It should not be close to the outlet 150 of the housing 100. The purpose is to increase static pressure, prevent or reduce cavitation caused by saturated water to the pump body 400 as much as possible, and increase the service life of the pump body 400.

[0055] In this embodiment, the pump body 400 can be a circulating pump.

[0056] According to one embodiment of the present invention, the housing 100 is further provided with a second liquid inlet 160, which is connected to the second inner cavity 120 and is adapted to replenish condensate.

[0057] In this embodiment, the housing 100 is provided with a second liquid inlet 160 in the part that encloses the second inner cavity 120. The second liquid inlet 160 is connected to the second inner cavity 120 and is used to inject condensate into the second inner cavity 120. The condensate generated during the process of steam being sent to the outside, or the condensate generated after the external liquid condenses upon encountering the cold, can return to the second inner cavity 120 through the second liquid inlet 160, thereby realizing the recycling of the internal liquid of the steam generator 600, saving liquid resources, and stabilizing the internal pressure of the system.

[0058] In this embodiment, the first replenishment port 140 and the second replenishment port 160 are arranged opposite each other at the same horizontal level. The first replenishment port 140 and the second replenishment port 160 can replenish fluid at the same time, or they can replenish fluid in different order with priority.

[0059] In other embodiments, a drain port 170 is provided at the bottom of the housing 100. The drain port 170 is connected to a drain pipe 171. A drain valve 172 is provided on the drain pipe 171. By controlling the opening and closing of the drain valve 172, the dirt deposited at the bottom of the first inner cavity 110 of the housing 100 can be discharged in time. The liquid discharged with the dirt during the discharge process can be further filtered into a pure liquid and then replenished into the second inner cavity 120 through the second replenishment port 160.

[0060] This invention also provides a steam generation system, including a steam generator 600, a compressor 510, a gas-liquid separator 520, an evaporator 530, a subcooler 540, and a liquid supply device 550 as described in the above embodiments. The heat release channel of the subcooler 540, the heat absorption channel of the evaporator 530, the gas-liquid separator 520, the compressor 510, and the heat exchange tube 210 of the steam generator 600 are sequentially connected to form a circulation loop; the liquid supply device 550, the heat absorption channel of the subcooler 540, and the first liquid supply port 140 are sequentially connected.

[0061] The steam generation system of this invention mainly consists of a steam generator 600, a compressor 510, a gas-liquid separator 520, an evaporator 530, a subcooler 540, and a liquid supply device 550. The compressor 510, heat exchange tube 210, the heat release channel of the subcooler 540, the heat absorption channel of the evaporator 530, and the gas-liquid separator 520 are connected in sequence through pipelines to form a circulation loop. The liquid supply device 550, the heat absorption channel of the subcooler 540, and the first liquid supply port 140 are connected in sequence through pipelines to form a liquid supply passage.

[0062] The compressor 510 compresses the refrigerant to form a high-temperature, high-pressure liquid refrigerant, which is directly sent into the heat exchange tube 210 of the steam generator 600. The heat exchange tube 210 reaches a high temperature and sprays the liquid onto the liquid distribution pipe 220 in the steam generator 600 for evaporation. During the heat exchange process, the high-temperature refrigerant releases heat and cools down, while the liquid absorbs heat and heats up to vaporize. The steam formed by the partial evaporation of the liquid is discharged from the second inner cavity 120 into the steam outlet 130. The unevaporated liquid falls into the bottom of the first inner cavity 110 and returns to the pump body 400 through the liquid outlet 150. The pump body 400 then pumps the liquid back to the liquid distribution pipe 220.

[0063] The refrigerant flowing out of the heat exchange tube 210 enters the heat release channel of the subcooler 540 and exchanges heat with the liquid in the heat absorption channel of the subcooler 540. The refrigerant further releases heat and cools down. The refrigerant flowing out of the subcooler 540 enters the heat absorption channel of the evaporator 530. The heat release channel of the evaporator 530 is connected to a heat source and exchanges heat with the refrigerant. The refrigerant absorbs heat and rises in temperature to form a gaseous high-temperature refrigerant, which flows into the gas-liquid separator 520 for gas-liquid separation, ensuring that the refrigerant returning to the compressor 510 is a gaseous high-temperature refrigerant.

[0064] The liquid supply device 550 inputs liquid into the heat absorption channel of the subcooler 540. The liquid exchanges heat with the refrigerant in the heat release channel of the subcooler 540. The liquid absorbs heat and rises in temperature in the subcooler 540. Thus, the liquid is preheated before entering the steam generator 600 through the subcooling heat exchange of the refrigerant, thereby improving the effect of steam thermal deoxygenation on the liquid after it enters the second inner cavity 120 through the first liquid port.

[0065] In this embodiment, the liquid supply device 550 includes a water supply pump 551, a main pipeline 552, and a branch pipeline 553. The main pipeline 552 is connected to the heat absorption channel of the supercooler 540. The water supply pump 551 is installed on the main pipeline 552, and the branch pipeline 553 is connected to the main pipeline 552. A chemical agent is injected into the main pipeline 552 at the front end of the water supply pump 551. The water supply pump 551 pumps the liquid formed by water mixed with the chemical agent into the heat absorption channel of the supercooler 540.

[0066] The steam generation system also includes a throttle valve 700, which is installed on the pipeline connecting the heat release channel of the subcooler 540 and the heat absorption channel of the evaporator 530. The throttle valve 700 further reduces the pressure and temperature of the refrigerant flowing out of the heat release channel of the subcooler 540 to ensure the heat absorption effect of the refrigerant in the evaporator 530.

[0067] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A steam generator, characterized in that, include: The housing (100) is provided with a first inner cavity (110), a second inner cavity (120), a steam outlet (130) and a first liquid inlet (140). The first inner cavity (110), the second inner cavity (120) and the steam outlet (130) are connected in sequence, and the first liquid inlet (140) is connected to the second inner cavity (120). A steam generating assembly (200) is disposed in the first inner cavity (110); A gas separation component (300) is disposed in the second inner cavity (120).

2. The steam generator according to claim 1, characterized in that, The steam generating assembly (200) includes: Heat exchange tube (210); The liquid distribution pipe (220) is provided with a spray hole (221) facing the heat exchange pipe (210).

3. The steam generator according to claim 2, characterized in that, The inner wall of the heat exchange tube (210) is provided with grooves.

4. The steam generator according to claim 2, characterized in that, The outer wall of the heat exchange tube (210) is smooth.

5. The steam generator according to claim 2, characterized in that, The heat exchange tube (210), the liquid distribution tube (220) and the steam outlet (130) are arranged sequentially from bottom to top. The cross-sectional area of ​​the second inner cavity (120) along the steam flow direction is smaller than the cross-sectional area of ​​the first inner cavity (110) along the steam flow direction.

6. The steam generator according to claim 5, characterized in that, The dispensing tube (220) includes: Pipe body (222), the pipe body (222) is horizontally arranged, and the pipe body (222) is provided with the spray hole (221). The liquid distribution plate (223) is disposed inside the tube body (222) and extends horizontally to divide the inside of the tube body (222) into an inlet chamber (225) and a liquid distribution chamber (226). The liquid distribution chamber (226) is connected to the spray hole (221). The liquid distribution plate (223) is provided with a liquid distribution hole (224) that is connected to the liquid distribution chamber (226).

7. The steam generator according to claim 6, characterized in that, The diameter of the liquid separation hole (224) is larger than the diameter of the spray hole (221).

8. The steam generator according to any one of claims 1 to 7, characterized in that, Also includes: The pump body (400) is connected to the liquid distribution pipe (220) through the liquid inlet pipe (410) and the pump body (400) is connected to the liquid outlet (150) at the bottom of the housing (100) through the liquid return pipe (420). The pump body (400) is located below the housing (100) and is at least a set distance away from the liquid outlet (150).

9. The steam generator according to claim 8, characterized in that, The housing (100) is also provided with a second liquid inlet (160), which is connected to the second inner cavity (120) and is suitable for replenishing condensate.

10. A steam generation system, characterized in that, include: The steam generator (600) as described in claims 1 to 9; Compressor (510) Gas-liquid separator (520); Evaporator (530); The subcooler (540), the heat release channel of the subcooler (540), the heat absorption channel of the evaporator (530), the gas-liquid separator (520), the compressor (510) and the heat exchange tube (210) of the steam generator (600) are connected in sequence to form a circulation loop; The liquid supply device (550), the heat absorption channel of the supercooler (540) and the first liquid replenishment port (140) are connected in sequence.

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