Water vapor cooling device, compression device and cooling method

Abstract

The water vapor cooling device, compression equipment and cooling method disclosed by the application are used for a water vapor compressor. An outlet of the water vapor compressor is provided with a water vapor exhaust pipeline. The water vapor cooling device comprises a cooling medium supply assembly and a cooling assembly. The cooling medium supply assembly is used for providing cooling medium. The cooling assembly is connected with the water vapor exhaust pipeline. The cooling assembly comprises a liquid storage cavity, spray pipes and an adjusting mechanism. The cooling medium supply assembly is in communication with the liquid storage cavity. The spray pipes are arranged at intervals. Each spray pipe is in communication with the liquid storage cavity. Each spray pipe is provided with a nozzle. The adjusting mechanism is arranged in the liquid storage cavity. The adjusting mechanism is configured to switch between different working positions according to the flow of the cooling medium, so as to selectively connect the liquid storage cavity with one or more of the spray pipes. The water vapor cooling device has a simple structure. The spraying amount can be adjusted by changing the flow of the cooling water only, without the cooperation of other variables, so that the response speed can be improved.

Description

Technical Field

[0001] This application relates to the field of steam compression equipment technology, and more specifically, to a steam cooling device, compression equipment and cooling method. Background Technology

[0002] In industrial production, centrifugal steam compressors can effectively improve steam quality, converting low-quality steam into high-quality steam before it is used in industrial production, thereby improving steam utilization. In multi-stage centrifugal compressors, because the impeller of the first-stage centrifugal compressor does work on the steam, the outlet steam pressure and temperature of the first-stage centrifugal compressor are high, resulting in significant superheat. This places higher demands on the materials, and the higher the superheat of the steam, the worse its heat exchange effect and the more difficult it is to compress. Therefore, in practical applications, the interstage steam is usually cooled.

[0003] There are generally two solutions for cooling interstage steam. The first is cooling via heat exchange fins, where steam exchanges heat with the external working fluid through fins arranged outside the pipes. This method uses indirect heat exchange, resulting in slow cooling and an uncontrollable cooling rate. The second method is direct water spraying into the pipes for cooling. This method has a faster heat exchange rate than heat exchange fins and can fully utilize the heat of the water vapor, resulting in better heat exchange. However, controlling the spray volume and water droplet diameter is always a challenge when using water spraying. Excessive spray volume can lead to excessive condensation of steam inside the pipes and compressor surge; while excessively large droplets can cause incomplete evaporation, allowing them to enter the next stage of the compressor, corroding the compressor blades and reducing their lifespan.

[0004] Patent CN120140275A proposes a spraying scheme that utilizes a rotatable valve core to adjust the spray volume by regulating the valve opening and the valve core's matching degree. However, its mechanical structure is complex, resulting in high processing and maintenance costs. Furthermore, its control response is complex, requiring comprehensive adjustment of both the regulating valve and the valve core's rotation, leading to a certain degree of lag.

[0005] Therefore, how to simplify the structure of the cooling device and improve the response speed has become a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0006] In view of this, the purpose of this application is to provide a water vapor cooling device that simplifies the structure and improves the response speed.

[0007] Another key aspect of this application is to provide a steam compression device that includes the aforementioned steam cooling device.

[0008] Another core aspect of this application is to provide a method for cooling water vapor using the aforementioned water vapor compression equipment.

[0009] To achieve the above objectives, this application provides the following technical solution:

[0010] A steam cooling device is used for a steam compressor. The steam compressor has a steam exhaust pipe at its outlet. The steam cooling device includes:

[0011] Cooling medium supply assembly, used to supply cooling medium to water vapor exhaust pipe;

[0012] The cooling component is connected to the steam exhaust pipe. The cooling component includes a liquid storage chamber, nozzles, and an adjustment mechanism. The cooling medium supply component is connected to the liquid storage chamber. The nozzles include multiple nozzles spaced apart, each connected to the liquid storage chamber. Each nozzle is equipped with a nozzle located in the steam exhaust pipe to spray steam. The adjustment mechanism is located in the liquid storage chamber and is configured to switch between different working positions according to the flow rate of the cooling medium to selectively connect the liquid storage chamber to one or more of the nozzles.

[0013] Optionally, in the above-mentioned water vapor cooling device, the liquid storage chamber is provided with a cooling medium inlet, and the adjusting mechanism includes a slider structure and an elastic reset member. The slider structure slides with the liquid storage chamber and abuts against the wall of the liquid storage chamber to divide the liquid storage chamber into a first chamber and a second chamber. One end of the elastic reset member is connected to the slider structure, and the other end is connected to the wall of the liquid storage chamber away from the cooling medium inlet.

[0014] The cooling medium supply assembly includes a cooling water pump and a regulating valve, with the regulating valve located downstream of the cooling water pump.

[0015] Optionally, in the above-mentioned steam cooling device, the second cavity is provided with a connecting hole that communicates with the steam exhaust pipe, and the connecting hole is located on the side away from the cooling medium inlet.

[0016] Optionally, in the above-mentioned steam cooling device, the regulating mechanism includes a limiting member, which is disposed in the liquid storage chamber and located on the side near the inlet of the cooling medium.

[0017] Optionally, in the above-mentioned steam cooling device, the slider structure includes a slider and a first sealing element, the first sealing element is sleeved on the slider, and the thickness of the first sealing element is less than the thickness of the limiting element.

[0018] Optionally, in the above-mentioned steam cooling device, each nozzle is spaced apart along the axial direction of the liquid storage chamber, and any two adjacent nozzles are staggered along the circumference of the liquid storage chamber.

[0019] Optionally, in the above-mentioned steam cooling device, the liquid storage chamber is formed by a first shell and a second shell, the first shell and the second shell are detachably connected, and the second shell is detachably connected to the steam exhaust pipe.

[0020] The cooling medium inlet is located in the first housing, and the nozzle is located in the second housing.

[0021] Optionally, in the above-mentioned steam cooling device, a second sealing element is provided between the first shell and the second shell, and between the second shell and the steam exhaust pipe.

[0022] A steam compression device includes a steam compressor and the aforementioned steam cooling device, wherein the steam compressor includes at least one steam compressor.

[0023] When a steam compressor is included, the cooling medium supply component and the cooling component are located in the steam exhaust pipe of the steam compressor or in the inlet pipe of the steam compressor; when a steam compressor is included, the steam exhaust pipe is connected to any two adjacent steam compressors, and the cooling medium supply component and the cooling component are located between any two adjacent steam compressors.

[0024] Optionally, in the above-mentioned steam compression equipment, the steam compression equipment includes a detection component and a control component. The detection component includes a first temperature measuring element, a second temperature measuring element and a flow measuring element disposed in the steam exhaust pipe. The first temperature measuring element and the flow measuring element are both disposed upstream of the cooling component, and the second temperature measuring element is disposed downstream of the cooling component.

[0025] The first temperature measuring element, the second temperature measuring element, the flow measuring element, the cooling water pump of the cooling medium supply assembly, and the regulating valve of the cooling medium supply assembly are all connected to the control assembly.

[0026] A method for cooling water vapor, using the aforementioned water vapor compression equipment, includes the following steps:

[0027] The first temperature of the water vapor is obtained by using a first temperature measuring element to obtain the first temperature of the water vapor located upstream of the cooling component;

[0028] Compare the initial temperature of the water vapor with the target temperature and determine whether it exceeds the threshold.

[0029] If the difference between the first temperature of the water vapor and the target temperature is outside the threshold, the water vapor cooling device is activated to spray and cool the water vapor.

[0030] The second temperature of the water vapor is obtained by means of a second temperature measuring element after the water vapor cooling device has been activated for a preset time.

[0031] The second temperature of the water vapor is compared with the target temperature, and a control signal is generated for the control valve. The opening degree of the control valve is adjusted according to the control signal.

[0032] Optionally, in the above steam cooling method, in the step of comparing the second temperature of the steam with the target temperature and generating a regulating signal for the regulating valve, when the second temperature of the steam is less than the target temperature, the opening of the regulating valve is reduced; when the second temperature of the steam is greater than the target temperature, the opening of the regulating valve is increased.

[0033] As can be seen from the above scheme, the water vapor cooling device disclosed in this application can switch the adjustment mechanism between different working positions by changing the flow rate of the cooling water, thereby changing the number of nozzles connected to the liquid storage chamber, and thus changing the spray volume of the cooling water, thereby realizing the adjustment of the spray volume of the cooling water. The structure is simple and easy to process. The spray volume can be adjusted by simply changing the flow rate of the cooling water. Water vapor can be sprayed and cooled by adjusting only a single variable without the need for other variables, which can improve the response speed. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of this application 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 only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 This is a schematic diagram of the structure of the steam compression device disclosed in the embodiments of this application;

[0036] Figure 2 This is a schematic diagram of the structure of the water vapor cooling device disclosed in the embodiments of this application. Figure 1 ;

[0037] Figure 3 This is a schematic diagram of the structure of the water vapor cooling device disclosed in the embodiments of this application. Figure 2 ;

[0038] Figure 4 This is a schematic diagram of the cooling component disclosed in the embodiments of this application;

[0039] Figure 5 This is a schematic diagram of the structure of the second housing disclosed in the embodiments of this application. Figure 1 ;

[0040] Figure 6 This is a schematic diagram of the structure of the second housing disclosed in the embodiments of this application. Figure 2 ;

[0041] Figure 7 This is a flowchart of the water vapor cooling method disclosed in the embodiments of this application.

[0042] Among them, 100 is a steam compressor and 110 is a steam exhaust pipe;

[0043] 200 is the cooling medium supply component, 210 is the cooling water pump, and 220 is the regulating valve;

[0044] 300 is a cooling component, 310 is a liquid storage chamber, 3101 is a first housing, 3102 is a second housing, 3103 is a second seal, 311 is a connecting hole, 312 is a cooling medium inlet, 313 is a first cavity, 314 is a second cavity, 320 is a nozzle, 321 is a first nozzle, 322 is a second nozzle, 330 is an adjustment mechanism, 331 is a slider structure, 3311 is a slider, 33111 is a sliding part, 33112 is a connecting part, 3312 is a first seal, 332 is an elastic reset part, 333 is a limiting part, and 340 is a nozzle.

[0045] 400 is the detection component, 410 is the first temperature measuring element, 420 is the second temperature measuring element, and 430 is the flow measuring element. Detailed Implementation

[0046] The core of this application is to disclose a water vapor cooling device to simplify the structure and improve the response speed.

[0047] Another key aspect of this application is the disclosure of a steam compression device that includes the aforementioned steam cooling device.

[0048] Another key aspect of this application is the disclosure of a water vapor cooling method, which employs the aforementioned water vapor compression equipment.

[0049] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0050] like Figure 2 and Figure 4 As shown in the figure, this application discloses a steam cooling device for a steam compressor 100. The steam cooling device includes a cooling medium supply component 200 and a cooling component 300.

[0051] like Figure 1As shown, the steam compressor 100 has a steam exhaust pipe 110 at its outlet. Steam enters the steam compressor 100, and the impeller of the steam compressor 100 performs work on the steam. After the pressure and temperature of the steam increase, it is discharged from the steam exhaust pipe 110. The steam cooling device disclosed in this application is connected to the steam exhaust pipe 110 to cool the steam discharged from the steam compressor 100. The cooled steam can then enter the next stage steam compressor 100 for further compression, or it can be directly used in industrial applications, depending on the specific needs. The core of this application is to cool the steam discharged from the steam exhaust pipe 110, and does not involve structural improvements to the steam compressor 100. Therefore, the specific structure and working principle of the steam compressor 100 will not be described here.

[0052] Specifically, the cooling medium supply assembly 200 is used to provide a cooling medium to the steam exhaust pipe 110. The cooling medium is preferably cooling water, and more preferably high-purity demineralized water.

[0053] like Figure 2 As shown, the cooling component 300 is connected to the steam exhaust pipe 110. The cooling component 300 includes a liquid storage chamber 310, a nozzle 320, and an adjusting mechanism 330. The cooling medium supply component 200 is connected to the liquid storage chamber 310. The nozzle 320 includes multiple nozzles spaced apart, each connected to the liquid storage chamber 310. Each nozzle 320 is equipped with a nozzle 340. For each nozzle 320, one, two, or more nozzles 340 can be provided; the specific number can be determined according to actual needs. Each nozzle 340 is located inside the steam exhaust pipe 110 to spray the steam in the steam exhaust pipe 110. The adjusting mechanism 330 is located in the liquid storage chamber 310 and is configured to switch between different working positions according to the flow rate of the cooling medium, selectively connecting the liquid storage chamber 310 to one or more of the nozzles 320.

[0054] It should be noted that when the adjustment mechanism 330 is in the initial working position, the liquid storage chamber 310 is not connected to any of the nozzles 320.

[0055] When the temperature difference between the water vapor discharged from the water vapor exhaust pipe 110 and the target temperature is outside the threshold, it is necessary to spray the water vapor to cool it down. The cooling medium supply component 200 and the cooling component 300 are activated. At this time, the cooling water volume is the preset value. The regulating mechanism 330 is switched to one of the working positions. The liquid storage chamber 310 is connected to part of the spray pipe 320. The cooling water is atomized through the nozzle 340 and sprayed directly onto the water vapor to spray and cool it down.

[0056] When the temperature difference between the water vapor downstream of the cooling component 300 and the target temperature is outside the threshold and the water vapor temperature is greater than the target temperature, the flow rate of cooling water can be increased, and the regulating mechanism 330 switches to another working position to increase the number of nozzles 320 connected to the liquid storage chamber 310, thereby increasing the amount of cooling water sprayed. When the temperature difference between the water vapor downstream of the cooling component 300 and the target temperature is outside the threshold and the water vapor temperature is less than the target temperature, the flow rate of cooling water is reduced, and the regulating mechanism 330 switches to another working position to reduce the number of nozzles 320 connected to the liquid storage chamber 310, thereby reducing the amount of cooling water sprayed.

[0057] The steam cooling device disclosed in this application can switch the regulating mechanism 330 between different working positions by changing the flow rate of the cooling water, thereby changing the number of nozzles 320 connected to the liquid storage chamber 310, and thus changing the spray volume of the cooling water, thereby achieving the adjustment of the spray volume of the cooling water. It has a simple structure and is easy to manufacture. The spray volume can be adjusted by simply changing the flow rate of the cooling water. The cooling of steam can be achieved by adjusting only a single variable without the need for other variables, which can improve the response speed.

[0058] Furthermore, such as Figure 2 and Figure 4 As shown, in some specific embodiments, the liquid storage cavity 310 is provided with a cooling medium inlet 312, which is preferably located at the top of the liquid storage cavity 310, and the nozzle 320 is preferably located at the bottom of the liquid storage cavity 310. The adjustment mechanism 330 includes a slider structure 331 and an elastic reset member 332. The slider structure 331 is slidably engaged with the liquid storage cavity 310, and the slider structure 331 abuts against the wall of the liquid storage cavity 310. One end of the elastic reset member 332 is connected to the slider structure 331, and the other end is connected to the wall of the liquid storage cavity 310. Specifically, the elastic reset member 332 is arranged along the axial direction of the liquid storage cavity 310, and the slider structure 331 abuts against the wall of the liquid storage cavity 310 around its perimeter, so that the slider structure 331 divides the liquid storage cavity 310 into a first cavity 313 and a second cavity 314. The following description takes the left side of the slider structure 331 as the first cavity 313 and the right side of the slider structure 331 as the second cavity 314 as an example. The shape and size of the slider structure 331 are adapted to the shape and size of the liquid storage cavity 310.

[0059] like Figure 2 As shown, the first cavity 313 and the second cavity 314 are separated by the slider structure 331. The first cavity 313 and the second cavity 314 are not connected to each other, so as to prevent the cooling medium entering the first cavity 313 from entering the second cavity 314 from the cooling medium inlet 312. Thus, by moving the slider structure 331, the number of nozzles 320 connected to the liquid storage cavity 310 can be changed, thereby changing the spray volume.

[0060] The cooling medium supply assembly 200 includes a cooling water pump 210 and a regulating valve 220. The regulating valve 220 is located downstream of the cooling water pump 210, which can utilize existing equipment. The flow rate of the cooling water can be adjusted by changing the frequency of the cooling water pump 210 and / or the opening of the regulating valve 220, preferably by adjusting the opening of the regulating valve 220. The regulating valve 220 is preferably an electrically operated regulating valve, capable of adjusting its opening in response to a control command. By changing the opening of the regulating valve 220, the mass flow rate of the cooling water is changed, thereby altering the motion state of the slider structure 331, which in turn changes the number of nozzles 320 connected to the liquid storage chamber 310 and the number of nozzles 340 participating in the spray. The opening of the regulating valve 220 is the only input variable; adjusting only the opening of the regulating valve 220 improves the response speed.

[0061] like Figure 2 and Figure 5 As shown, the second cavity 314 is provided with a connecting hole 311 that communicates with the steam exhaust pipe 110. The connecting hole 311 is located on the side away from the cooling medium inlet 312. The connecting hole 311 is located on the far right of all nozzles 320. That is, after each nozzle 320 is connected to the liquid storage cavity 310, the slider structure 331 continues to move to the right. When the slider structure 331 moves beyond the preset displacement, the first cavity 313 is connected to the steam exhaust pipe 110 through the connecting hole 311. The overpressurized cooling water directly enters the steam exhaust pipe 110 through the connecting hole 311. At this time, the connecting hole 311 can play a pressure relief role, which can reduce the risk of structural damage to the cooling component 300.

[0062] In practical applications, when the regulating valve 220 is opened, the cooling water pump 210 provides power, and cooling water enters the first chamber 313 from the cooling medium inlet 312. Due to the connection hole 311, the medium in the second chamber 314 is water vapor. Force analysis is performed on the slider structure 331, such as... Figure 3As shown, the pressure acting on the slider structure 331 includes the pressure P1 of the cooling water, the pressure P0 of the elastic reset member 332 acting on the slider structure 331 (the elastic reset member 332 is in a pre-compressed state), the frictional force P2 acting on the slider structure 331, and the pressure P3 of the water vapor from the second cavity 314 on the right side of the slider structure 331 acting on the slider structure 331. At this time, P1 < P0 + P2 + P3, the slider structure 331 is in the initial working position, and at this time there is no nozzle 320 connected to the first cavity 313. The cooling medium supply assembly 200 continues to inject cooling medium into the first cavity 313. The following explanation uses cooling water as the cooling medium. As the flow rate of the cooling water increases, when P1 > P0 + P2 + P3, the slider structure 331 moves to the right. When the slider structure 331 is in the first working position, a nozzle 320 near the cooling medium inlet 312 is connected to the first cavity 313. Cooling water enters the nozzle 320 and is sprayed out from the nozzle 340. Due to the pressure difference between the cooling water pressure and the water vapor pressure in the water vapor exhaust pipe 110 (the cooling water pressure is higher than the water vapor pressure), driven by the pressure difference, the cooling water is atomized by the nozzle 340 and sprayed into the water vapor exhaust pipe 110, mixing with the water vapor in the pipe to cool the water vapor, thus achieving the water spray cooling function.

[0063] As cooling water is injected, the slider structure 331 continues to move to the right until the amount of injected cooling water is the same as the flow rate of cooling water through the nozzle 340. At this point, the slider structure 331 stops moving. It should be noted that the specific number of nozzles 320 and 340 can be set according to the flow rate of the cooling water.

[0064] On the other hand, the connection hole 311 ensures the atomization effect of the nozzle 340. Specifically, analyzing the force on one of the nozzles 340, the outer side of the nozzle 340 experiences a water vapor pressure of P4. Due to the connection hole 311, the medium in the second cavity 314 is water vapor, therefore P4 = P3. The inner side of the nozzle 340 experiences cooling water pressure. When the slider structure 331 stops moving, the cooling water pressure on the nozzle 340 is P1 = P0 + P2 + P3. For the nozzle 340, the pressure difference between the inner and outer sides is P0 + P2. At this point, as long as P0 + P2 is greater than the atomization pressure difference required by the nozzle 340, the spraying requirement can be met. Furthermore, as long as P0 is greater than the atomization pressure difference required by the nozzle 340, the atomization requirement of the nozzle 340 can be satisfied. Therefore, in practical applications, the preload of the elastic reset member 332 should not be less than the jet pressure difference of the nozzle 340. In practical applications, the preload of the elastic reset member 332 can be set to be greater than or equal to the atomization pressure difference required by the nozzle 340. Specifically, the atomization pressure difference of the nozzle 340 can be determined based on the droplet size and the type of nozzle 340.

[0065] Furthermore, such as Figure 2 As shown, to limit the slider structure 331, the adjusting mechanism 330 includes a limiting member 333. The limiting member 333 is disposed in the liquid storage cavity 310 and located on the side near the cooling medium inlet 312. Specifically, the limiting member 333 can be a limiting block, and preferably includes multiple limiting members spaced apart circumferentially along the liquid storage cavity 310. Alternatively, the limiting member 333 can be a limiting baffle, preferably with a through hole to allow cooling water to pass through. The limiting member 333 prevents the slider structure 331 from continuing to move to the left, blocking the cooling medium inlet 312 and affecting the entry of cooling water into the liquid storage cavity 310. At the same time, the limiting member 333 keeps the elastic reset member 332 under preload. Furthermore, to improve the sealing effect, the width of the slider structure 331 is preferably greater than the diameter of the nozzle 320.

[0066] Furthermore, to improve the sealing effect, in some specific embodiments, such as Figure 2 and Figure 4 As shown, the slider structure 331 includes a slider 3311 and a first sealing member 3312. The first sealing member 3312 is sleeved on the slider 3311, and the thickness of the first sealing member 3312 is less than the thickness of the limiting member 333. Specifically, as shown... Figure 2 As shown, the slider 3311 preferably includes a sliding portion 33111 and a connecting portion 33112. The connecting portion 33112 protrudes from the sliding portion 33111 to facilitate connection with the elastic reset member 332. Specifically, the slider 3311 can be an integral structure or a split structure. When it is a split structure, the sliding portion 33111 and the connecting portion 33112 can be detachably connected or non-detachably connected. Detachable connection methods include, but are not limited to, bolt connection and snap-fit ​​connection, while non-detachable connection methods include, but are not limited to, welding connection.

[0067] The first sealing element 3312 is preferably a sealing ring, preferably a rubber sealing ring. The first sealing element 3312 is sleeved on the outside of the sliding part 33111 to play a sealing role and prevent the cooling water in the first cavity 313 from leaking into the second cavity 314. When the slider structure 331 is in the initial position, the slider structure 331 is in contact with the limiting member 333. The thickness of the first sealing element 3312 is smaller than that of the limiting member 333. The slider structure 331 bears the compressive stress of the limiting member 333, which reduces the risk of damage to the first sealing element 3312 due to excessive compression, and can extend the service life of the first sealing element 3312, ensuring the sealing performance and long-term reliability of the cooling component 300.

[0068] Furthermore, such as Figure 5As shown, to reduce spray disturbance between adjacent nozzles 340 and promote droplet evaporation, the nozzles 320 are spaced apart along the axial direction of the liquid storage chamber 310, and any two adjacent nozzles 320 are staggered along the circumference of the liquid storage chamber 310. In other words, the nozzles 320 are staggered along the axial direction of the liquid storage chamber 310. Preferably, the distance between two adjacent nozzles 320 along the axial direction of the liquid storage chamber 310 is ≥ 3 times the diameter of the nozzle 340. To illustrate the distance D between two adjacent nozzles 320, let... Figure 5 Taking the first nozzle 321 on the left and the second nozzle 322 adjacent to it as examples, the connection point between the axis of the first nozzle 321 and the bottom surface of the steam exhaust pipe 110 is point A, and the connection point between the axis of the second nozzle 322 and the bottom surface of the steam exhaust pipe 110 is point B. A perpendicular line is drawn from point A to the axis L of the steam exhaust pipe 110, with the foot of the perpendicular being A'. A perpendicular line is also drawn from point B to the axis L of the steam exhaust pipe 110, with the foot of the perpendicular being B'. The distance D is then the straight-line distance between A' and B'. Those skilled in the art should understand that the attached diagram is only a simplified schematic diagram and is not drawn to scale, nor does it represent actual dimensions and proportions. However, the geometric definition of distance D described above is unique and definite. Along the circumference of the liquid storage chamber 310, the angle between the extensions of the axes of two adjacent nozzles 320 is ≥30°, i.e. Figure 6 The angle α shown is ≥30°. It should be noted that the diameters of each nozzle 320 and each nozzle 340 are preferably the same.

[0069] Furthermore, such as Figure 4 As shown, in some specific embodiments, the liquid storage chamber 310 is formed by a first housing 3101 and a second housing 3102. The first housing 3101 and the second housing 3102 are detachably connected, and the specific connection methods include, but are not limited to, bolt and nut connection, snap-fit ​​connection, and flange connection. The second housing 3102 is detachably connected to the steam exhaust pipe 110, and the specific connection methods include, but are not limited to, bolt and nut connection, snap-fit ​​connection, and flange connection. The cooling medium inlet 312 is located in the first housing 3101, and the nozzle 320 is located in the second housing 3102. To ensure the sealing performance of the liquid storage chamber 310, a second sealing element 3103 is provided between the first housing 3101 and the second housing 3102, and between the second housing 3102 and the steam exhaust pipe 110. The second sealing element 3103 is preferably a rubber gasket, but it can be made of metal or high-temperature resistant rubber.

[0070] Furthermore, this application also discloses a steam compression device. Specifically, the steam compression device includes a steam compressor 100 and the aforementioned steam cooling device. At least one steam compressor 100 is included. When only one steam compressor 100 is included, the cooling medium supply component 200 and the cooling component 300 are disposed on the steam exhaust pipe 110 of the steam compressor 100 or on the inlet pipe of the steam compressor 100. The specific placement can be determined according to actual cooling requirements. When multiple steam compressors 100 are included, the steam exhaust pipe 110 connects any two adjacent steam compressors 100, and the cooling medium supply component 200 and the cooling component 300 are disposed between any two adjacent steam compressors 100. Figure 1 As shown in the figure, two steam compressors 100 are used as an example for illustration. The steam flows from left to right. For ease of explanation, the steam compressor 100 on the left is called the first steam compressor 100, and the steam compressor 100 on the right is called the second steam compressor 100. The cooling component 300 cools the steam that has passed through the first steam compressor 100. After the steam is cooled, it enters the second steam compressor 100 for further compression.

[0071] Furthermore, the water vapor compression device disclosed in this application includes a detection component 400 and a control component, specifically, as shown in the example below. Figure 1 As shown, the detection component 400 includes a first temperature measuring element 410, a second temperature measuring element 420, and a flow measuring element 430 disposed in the steam exhaust pipe 110. The first temperature measuring element 410 and the flow measuring element 430 are both disposed upstream of the cooling component 300 and are used to measure the temperature and flow rate of the steam discharged from the steam exhaust pipe 110 of the first steam compressor 100. The second temperature measuring element 420 is disposed downstream of the cooling component 300 and is used to measure the temperature of the steam after cooling by the cooling component 300 and before it enters the second steam compressor 100. The first temperature measuring element 410, the second temperature measuring element 420, the flow measuring element 430, the cooling water pump 210 of the cooling medium supply component 200, and the regulating valve 220 of the cooling medium supply component 200 are all connected to the control component. The control component can compare the temperature of the water vapor measured by the first temperature measuring element 410 with the target temperature, control the start and stop of the cooling water pump 210, compare the temperature of the water vapor measured by the second temperature measuring element 420 with the target temperature, generate a regulation signal for the regulating valve 220, and adjust the opening of the regulating valve 220 according to the regulation signal so that the temperature of the water vapor entering the second water vapor compressor 100 meets the target temperature.

[0072] Furthermore, this application also discloses a method for cooling water vapor, using the aforementioned water vapor compression equipment, such as... Figure 7 As shown, the steps include:

[0073] Step S1: Obtain the first temperature of the water vapor;

[0074] The first temperature of the water vapor located upstream of the cooling assembly 300 is obtained by the first temperature measuring element 410.

[0075] Step S2: Compare the first temperature of the water vapor with the target temperature, and determine whether it exceeds the threshold.

[0076] If the difference between the first temperature of the water vapor and the target temperature is outside the threshold, the water vapor cooling device is activated to spray and cool the water vapor.

[0077] Step S3: Obtain the second temperature of the water vapor;

[0078] After the water vapor cooling device has been started for a preset time, the second temperature value of the water vapor located downstream of the cooling component 300 is obtained by the second temperature measuring element 420.

[0079] Step S4: Compare the second temperature of water vapor with the target temperature, and generate an adjustment signal for the regulating valve 220. Adjust the opening degree of the regulating valve 220 according to the adjustment signal.

[0080] Specifically, the first enthalpy of water vapor, h1, can be calculated based on the first temperature; the target enthalpy of water vapor, ht, can be calculated based on the target temperature; and the second enthalpy of water vapor, h2, can be calculated based on the second temperature. The required cooling water flow rate, mw, can be calculated based on the water vapor flow rate, m1, at the outlet of the first steam compressor 100, and the enthalpy of the cooling water, hw. Specifically, mw = m1 × (h1 - ht) / (ht - hw). The opening of the regulating valve 220 can be adjusted based on the cooling water flow rate. It should be noted that the cooling medium supply assembly 200 includes a cooling water flow rate measuring element, which is used to measure the flow rate of the cooling water.

[0081] When the second temperature of the steam is lower than the target temperature, the opening of the regulating valve 220 is reduced; when the second temperature of the steam is higher than the target temperature, the opening of the regulating valve 220 is increased.

[0082] In some other embodiments, a first pressure measuring element and a second pressure measuring element are provided on the steam exhaust pipe 110. The first pressure measuring element is located upstream of the cooling component 300, and the second pressure measuring element is located downstream of the cooling component 300, for measuring the pressure of steam.

[0083] It should be noted that the various embodiments in this specification mainly describe the differences from other embodiments, and the same or similar parts between the various embodiments can be referred to each other.

[0084] In the description of the embodiments of this application, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "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 this application 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 this application.

[0085] Furthermore, the terms “first,” “second,” and “third” are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0086] In the description of the embodiments of this application, 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 this application based on the specific circumstances.

[0087] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are only for the purpose of helping to understand the core ideas of this application. It should be noted that those skilled in the art can make several improvements and modifications to this application without departing from the principles of this application, and these improvements and modifications also fall within the protection scope of the claims of this application.

Claims

1. A steam cooling device for a steam compressor (100), wherein the outlet of the steam compressor (100) is provided with a steam exhaust pipe (110), characterized in that, The steam cooling device includes: A cooling medium supply assembly (200) is used to supply cooling medium to the steam exhaust pipe (110); A cooling component (300) is connected to the steam exhaust pipe (110). The cooling component (300) includes a liquid storage chamber (310), a nozzle (320), and an adjustment mechanism (330). The cooling medium supply component (200) is connected to the liquid storage chamber (310). The nozzle (320) includes multiple nozzles spaced apart. Each nozzle (320) is spaced apart along the axial direction of the liquid storage chamber (310). Any two adjacent nozzles (320) are staggered along the circumference of the liquid storage chamber (310). Each nozzle (320) is connected to the liquid storage chamber (310). Each nozzle (320) is provided with a nozzle (340). Each nozzle (340) is located in the steam exhaust pipe (110) to spray steam. The regulating mechanism (330) is disposed in the liquid storage chamber (310) to divide the liquid storage chamber (310) into a first chamber (313) and a second chamber (314). The second chamber (314) is provided with a connecting hole (311) communicating with the water vapor exhaust pipe (110). The liquid storage chamber (310) is provided with a cooling medium inlet (312). The connecting hole (311) is located on the side away from the cooling medium inlet (312) so that the pressure in the second chamber (314) is equal to the water vapor pressure in the water vapor exhaust pipe (110) in real time, and the injection pressure difference of the nozzle (340) is decoupled from the water vapor pressure. The regulating mechanism (330) is configured to switch between different operating positions according to the flow rate of the cooling medium to selectively connect the reservoir (310) to one or more of the nozzles (320); the regulating mechanism (330) includes a slider structure (331) and an elastic reset member (332), the slider structure (331) slidingly engaging with the reservoir (310) and abutting against the wall of the reservoir (310); one end of the elastic reset member (332) is connected to the slider structure (331), and the other end is connected to the wall of the reservoir (310) away from the cooling medium inlet (312); The cooling medium supply assembly (200) includes a cooling water pump (210) and a regulating valve (220). The regulating valve (220) is located downstream of the cooling water pump (210). By adjusting the opening of the regulating valve (220), the flow rate of the cooling medium entering the liquid storage chamber (310) is changed, thereby driving the slider structure (331) of the regulating mechanism (330) to move, so as to change the number of nozzles (320) communicating with the liquid storage chamber (310), thereby adjusting the spray volume.

2. The steam cooling device as described in claim 1, characterized in that, The adjustment mechanism (330) includes a limiting member (333), which is disposed in the liquid storage chamber (310) and located on the side close to the cooling medium inlet (312).

3. The steam cooling device as described in claim 2, characterized in that, The slider structure (331) includes a slider (3311) and a first seal (3312), the first seal (3312) being sleeved on the slider (3311), and the thickness of the first seal (3312) being less than the thickness of the limiting member (333).

4. The steam cooling device as described in claim 1, characterized in that, The liquid storage chamber (310) is formed by a first shell (3101) and a second shell (3102), the first shell (3101) and the second shell (3102) are detachably connected, and the second shell (3102) is detachably connected to the water vapor exhaust pipe (110); The cooling medium inlet (312) is located in the first housing (3101), and the nozzle (320) is located in the second housing (3102).

5. The steam cooling device as described in claim 4, characterized in that, A second sealing element (3103) is provided between the first housing (3101) and the second housing (3102), and between the second housing (3102) and the water vapor exhaust pipe (110).

6. A steam compression device, characterized in that, The steam compression device includes a steam compressor (100) and a steam cooling device as described in any one of claims 1-5, wherein the steam compressor (100) includes at least one unit. When the steam compressor (100) comprises one, the cooling medium supply assembly (200) and the cooling assembly (300) are disposed in the steam exhaust pipe (110) of the steam compressor (100) or in the inlet pipe of the steam compressor (100); when the steam compressor (100) comprises multiple, the steam exhaust pipe (110) connects any two adjacent steam compressors (100), and the cooling medium supply assembly (200) and the cooling assembly (300) are disposed between any two adjacent steam compressors (100).

7. The steam compression device as described in claim 6, characterized in that, The steam compression device includes a detection component (400) and a control component. The detection component (400) includes a first temperature measuring element (410), a second temperature measuring element (420), and a flow measuring element (430) disposed on the steam exhaust pipe (110). The first temperature measuring element (410) and the flow measuring element (430) are both disposed upstream of the cooling component (300), and the second temperature measuring element (420) is disposed downstream of the cooling component (300). The first temperature measuring element (410), the second temperature measuring element (420), the flow measuring element (430), the cooling water pump (210) of the cooling medium supply assembly (200), and the regulating valve (220) of the cooling medium supply assembly (200) are all connected to the control assembly.

8. A method for cooling water vapor, employing the water vapor compression device as described in any one of claims 6 or 7, characterized in that, Including the following steps: The first temperature of the water vapor is obtained by means of the first temperature measuring element (410) to obtain the first temperature of the water vapor located upstream of the cooling component (300); Compare the initial temperature of the water vapor with the target temperature and determine whether it exceeds the threshold. If the difference between the first temperature of the water vapor and the target temperature is outside the threshold, the water vapor cooling device is activated to spray and cool the water vapor. The second temperature of the water vapor is obtained by means of the second temperature measuring element (420) after the water vapor cooling device has been started for a preset time. The second temperature of the water vapor is compared with the target temperature, and an adjustment signal is generated for the regulating valve (220). The opening degree of the regulating valve (220) is adjusted according to the adjustment signal.

9. The water vapor cooling method as described in claim 8, characterized in that, In the step of comparing the second temperature of water vapor with the target temperature and generating a regulating signal for the regulating valve (220), when the second temperature of water vapor is less than the target temperature, the opening of the regulating valve (220) is reduced; when the second temperature of water vapor is greater than the target temperature, the opening of the regulating valve (220) is increased.

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