Flash steam dehydration unit

Abstract

The present invention discloses a flash steam dehydration device, comprising: an outer shell, a sewage inlet provided on the side wall of the outer shell, and a sewage outlet provided at the bottom of the outer shell; an emptying cylinder provided at the top of the outer shell for connecting the interior and exterior of the outer shell; and a dehydration structure provided inside the outer shell, the dehydration structure being located above the sewage inlet and below the emptying cylinder; wherein the dehydration structure comprises: at least one first dehydration element, the at least one first dehydration element being spaced apart in the direction of gravity, the lower end of each first dehydration element being connected to a guide cylinder; and a second dehydration element, the second dehydration element being provided above the at least one first dehydration element. By providing the dehydration structure within the flash steam dehydration device, the flash steam dehydration device can relatively increase the contact area with the steam, causing liquid droplets in the steam to adhere to the dehydration structure to form large droplets, utilizing the surface tension of water and the gravity of the large droplets to overcome the drag of the exhaust steam, thereby reducing the discharge of liquid water.

Description

Technical Field

[0001] The present invention relates to the technical field of power plant boiler equipment, in particular to a flash steam dehydration device. Background Art

[0002] The periodic blowdown expansion tank is an important equipment in the steam boiler system, referred to as "regular blowdown". In the steam boiler system, the low points of the equipment that is prone to accumulation of dirt, such as the steam drum, manifold, continuous blowdown expansion tank, deaerator, etc., need to discharge dirt to the outside of the system according to a certain rule. This discharge is in the form of drainage, and the dirt is carried away by drainage to achieve sewage discharge. The regular blowdown expansion tank is a device that receives these drainages and treats them uniformly. The types and contents of dirt contained in these drainages are different, and the pressure, temperature, and flow of these drainages are also different. The time when they enter the regular blowdown expansion tank is also uncertain. That is, the incoming water of the regular blowdown expansion tank is intermittent, and the pressure, temperature, and flow of the incoming water fluctuate greatly. The types and contents of dirt contained in the incoming water fluctuate greatly.

[0003] The fixed discharge is a container directly connected to the atmosphere. After the incoming water enters the fixed discharge, flash evaporation will occur due to the release of pressure energy and kinetic energy and the conversion of thermal energy. Part of the water will be converted from liquid to gas. The converted steam will be mainly discharged to the atmosphere through the exhaust port, and the rest of the water will become undersaturated water after releasing part of the enthalpy. The undersaturated water will be mainly discharged through the wastewater outlet.

[0004] Due to the aforementioned characteristics of fixed drainage, during the intense drainage and subsequent flash evaporation and discharge processes, some liquid water is carried along by the steam and discharged from the drain outlet, creating a phenomenon known as "white pollution." This refers to the phenomenon where steam is discharged into the atmosphere. Because the ambient temperature is much lower than the steam temperature, the steam releases heat and condenses into liquid water droplets, which appear white in the air. When some liquid water is carried along by the steam and discharged from the drain outlet, the density of liquid water is nearly a thousand times that of steam. In most cases, the amount of liquid water is far greater than the amount condensed by steam. Furthermore, the volume of white water formed by the liquid water is much larger than the volume of white water formed by steam condensation.

[0005] In recent years, considerable efforts have been made to reduce and eliminate "white pollution," but with limited success. Some methods involve spraying water below the exhaust port, while others involve installing heat exchangers within the cylinder. These approaches primarily address heat transfer, but are ineffective due to the short residence time of steam in the exhaust. Summary of the Invention

[0006] The purpose of the present invention is to provide a flash steam dehydration device to solve the problem of "white pollution" occurring in a steam boiler system.

[0007] The above-mentioned purpose of the present invention can be achieved by adopting the following technical solutions:

[0008] The present invention provides a flash steam dehydration device, comprising: an outer shell, a side wall of the outer shell being provided with a sewage inlet, and a bottom of the outer shell being provided with a sewage outlet; an emptying cylinder, the emptying cylinder being arranged at the top of the outer shell and used to connect the interior and exterior of the outer shell; and a dehydration structure, the dehydration structure being arranged inside the outer shell, the dehydration structure being located above the sewage inlet and below the emptying cylinder; wherein the dehydration structure comprises: at least one first dehydration element, the at least one first dehydration element being arranged at intervals along the direction of gravity, the lower end of each first dehydration element being connected to a guide cylinder; and a second dehydration element, the second dehydration element being arranged above the at least one first dehydration element.

[0009] Preferably, each of the guide tubes passes through each of the first dehydration components located therebelow in sequence, and extends into the inner cavity of the outer shell located below the sewage inlet.

[0010] Preferably, the first dehydration component includes at least one layer of dehydration portion arranged at intervals along the direction of gravity, the dehydration portion includes a plurality of baffle groups arranged at intervals along the circumference of the guide tube, the plurality of baffle groups are arranged to form a fluid channel, and the guide tube is connected to the fluid channel.

[0011] Preferably, the dehydration section located at the bottom of the at least one first dehydration element further includes a first sealing plate for sealing the fluid channel, and a second sealing plate is sealed between two adjacent baffle groups of each dehydration section in the at least one first dehydration element.

[0012] Preferably, each of the baffle groups includes two baffles arranged in parallel, with a gap between the two baffles, and the second dehydration element is located directly above the gap of the topmost dehydration section in the at least one first dehydration element and directly above the fluid channel of the topmost dehydration section in the at least one first dehydration element.

[0013] Preferably, the baffle includes a first baffle and a second baffle connected to each other, the free end of the first baffle and the free end of the second baffle are both inclined along the direction of gravity, and the horizontal height of the free end of the first baffle is higher than the horizontal height of the free end of the second baffle.

[0014] Preferably, the second dehydration element is a porous plate, and a plurality of perforations are provided on the porous plate.

[0015] Preferably, the number of the baffle groups in each of the dehydration sections is four, and the four baffle groups are arranged at equal intervals along the circumference of the guide tube.

[0016] Preferably, the flash steam dehydration device further comprises a guide plate, wherein the guide plate is located between the emptying cylinder and the dehydration structure, and the area of ​​the guide plate is larger than the cross-sectional area of ​​the emptying cylinder.

[0017] Preferably, the guide plate has a first guide plate and a second guide plate set at an angle, the connection position of the first guide plate and the second guide plate is located directly below the emptying cylinder, and the free end of the first guide plate and the free end of the second guide plate are both inclined downward toward the dehydration structure.

[0018] Preferably, a manhole is provided on the side wall of the outer shell, and the manhole is located below the dehydration structure.

[0019] Preferably, a pressure gauge is provided on the side wall of the outer shell, and the pressure gauge is located above the dehydration structure; a thermometer is provided on the side wall of the outer shell, and the thermometer is located below the dehydration structure; a liquid level gauge is respectively provided on the side wall of the outer shell above and below the sewage inlet.

[0020] Preferably, a manhole is provided on the side wall of the outer shell, and the manhole is located below the dehydration structure.

[0021] Preferably, a pressure gauge is provided on the side wall of the outer shell, and the pressure gauge is located above the dehydration structure; a thermometer is provided on the side wall of the outer shell, and the thermometer is located below the dehydration structure; a liquid level gauge is respectively provided on the side wall of the outer shell above and below the sewage inlet.

[0022] Preferably, the sewage outlet is externally connected to a water seal structure, and the water seal structure includes: a sewage pipe connected to the sewage outlet, and a valve is connected to the sewage pipe; a water seal pipeline, having a first vertical pipe, a second vertical pipe and a horizontal pipe connected between the first vertical pipe and the second vertical pipe, the first vertical pipe is connected to the sewage pipe, the second vertical pipe is connected to the sewage pipe, and the valve is located on the sewage pipe between the first vertical pipe and the second vertical pipe.

[0023] Preferably, the horizontal height of the horizontal pipe is higher than the liquid level in the outer shell.

[0024] The characteristics and advantages of the present invention are:

[0025] The flash steam dehydration device is provided with a dehydration structure inside the device. The dehydration structure can relatively increase the contact area with the steam, so that the droplets in the steam adhere to the dehydration structure to form large droplets. The surface tension of water and the gravity of large droplets are used to overcome the drag of exhaust steam and reduce the discharge of liquid water. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 is a structural diagram of the flash steam dehydration device of the present invention;

[0028] Figure 2 It is a structural diagram of the dehydration structure of the present invention;

[0029] Figure 3 for Figure 1 The AA-direction cross-sectional view;

[0030] Figure 4 for Figure 1 Cross-sectional view along the BB direction;

[0031] Figure 5 A top view of an embodiment of the lowermost dehydration portion of the first dehydration element of the present invention;

[0032] Figure 6 A top view of another embodiment of the lowermost dehydration portion of the first dehydration element of the present invention;

[0033] Figure 7 This is a top view of the baffle assembly of the present invention;

[0034] Figure 8 This is a main structural diagram of the baffle assembly of the present invention;

[0035] Figure 9 This is a main structural diagram of another embodiment of the baffle group of the present invention.

[0036] Description of reference numerals:

[0037] 10. Flash steam dehydration device; 1. Outer shell; 11. Side wall of outer shell; 111. Sewage inlet; 112. Manhole; 113. Pressure gauge; 114. Thermometer; 115. Liquid level gauge; 12. Bottom of outer shell; 121. Sewage outlet; 13. Top of outer shell; 14. Inner cavity of outer shell; 2. Drain cylinder; 3. Dehydration structure; 31. First dehydration element; 311. Guide cylinder; 312. Dehydration section; 3121. Baffle assembly; 31211. Baffle; 31211A. Baffle; 31211B. Baffle; 31211a. First baffle; 31211b. Second baffle; 3122. Fluid channel; 3123. First sealing plate; 3124. Second sealing plate; 32. Second dehydration component; 321. Perforated plate; 3211. Perforation; 4. Guide plate; 41. First guide plate; 42. Second guide plate; 5. Water seal structure; 51. Sewage pipe; 511. Valve; 52. Water seal pipeline; 521. First vertical pipe; 522. Second vertical pipe; 523. Horizontal pipe; 6. Support legs; 7. Mounting frame; D. Gap between two baffles; H1. Horizontal height of the free end of the first baffle; H2. Horizontal height of the free end of the second baffle; H3. Horizontal height of the horizontal pipe; H4. Liquid level in the outer shell; F. Setting direction of the guide tube. DETAILED DESCRIPTION

[0038] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0039] See Figures 1 to 9 The present invention provides a flash steam dehydration device 10, comprising an outer shell 1, an emptying cylinder 2 and a dehydration structure 3. For details, please refer to Figure 1 The side wall 11 of the outer shell 1 is provided with a sewage inlet 111, and the bottom 12 of the outer shell 1 is provided with a sewage outlet 121; the emptying cylinder 2 is provided at the top 13 of the outer shell 1, for connecting the interior and exterior of the outer shell 1; the dehydration structure 3 is provided inside the outer shell 1 (i.e., the inner cavity 14 of the outer shell 1), and the dehydration structure 3 is located above the sewage inlet 111 and below the emptying cylinder 2. Figures 2 to 6 The dehydration structure 3 includes: at least one first dehydration component 31 and a second dehydration component 32. At least one first dehydration component 31 is arranged at intervals along the direction of gravity, and the lower end of each first dehydration component 31 is connected to a guide tube 311; the second dehydration component 32 is arranged above at least one first dehydration component 31.

[0040] Those skilled in the art will appreciate that, in this embodiment, the outer shell 1 can be cylindrical or spherical, and can be horizontal or vertical. In some preferred embodiments, the outer shell 1 is a cylindrical structure with closed ends, and the flow guide tube 311 and the emptying tube 2 are both cylindrical structures with open ends, and the outer shell 1, the flow guide tube 311, and the emptying tube 2 are all in an upright position.

[0041] By arranging a dehydration structure 3 inside it, the contact area with the steam is increased, so that the droplets in the steam adhere to the dehydration structure 3 to form large droplets. The surface tension of water and the gravity of the large droplets are used to overcome the drag of the exhaust steam, thereby reducing the discharge of liquid water.

[0042] The dehydration process of the flash steam dehydration device 10 is described below:

[0043] The sewage enters the interior of the outer shell 1 (i.e., the inner cavity 14 of the outer shell 1) through the sewage inlet 111 on the side wall 11 of the outer shell 1, and then expands to form steam and wastewater through decompression. The wastewater is stored in the interior of the outer shell 1 (i.e., the inner cavity 14 of the outer shell 1), and the steam moves upward through the dehydration structure 3.

[0044] When the steam passes through the dehydration structure 3, it sequentially passes through at least one first dehydration element 31 spaced apart along the direction of gravity, thereby ensuring that the contact area between the steam and the dehydration structure 3 meets the dehydration requirements. After the steam contacts the first dehydration element 31, the liquid in the steam adheres to the surface of the first dehydration structure 3 and forms large droplets. The surface tension of the water and the gravity of the large droplets then overcome the drag of the exhaust steam, thereby performing a first filtration to remove the liquid water in the steam.

[0045] When the steam passes through the second dehydration element 32 in the dehydration structure 3, the remaining liquid water in the steam contacts the surface of the second dehydration element 32 and adheres to its surface. Then, the surface tension of the water and the gravity of the large droplets overcome the drag of the exhaust steam, and the liquid water in the steam is filtered out for the second time.

[0046] As the number of liquid droplets adhering to the surface of each first dehydration element 31 increases, these droplets converge into the guide tube 311 connected to the lower end of each first dehydration element 31 and are discharged from the guide tube 311. Those skilled in the art will appreciate that both the liquid water removed from the steam by the first and second filtration steps can be discharged along the orientation F of the guide tube 311.

[0047] In some embodiments, see Figure 1 and Figure 6 Each guide tube 311 passes through each first dehydration component 31 located therebelow in sequence and extends into the inner cavity 14 of the outer shell 1 located below the sewage inlet 111. In some embodiments, the inner cavity 14 stores a liquid medium, such as water.

[0048] Those skilled in the art should understand that in this embodiment, when the guide tubes 311 connected to the lower ends of the first dehydration elements 31 sequentially pass through the first dehydration elements 31 located therebelow, the guide tubes 311 are staggered with each other, thereby ensuring that the guide tubes 311 do not affect each other, thereby ensuring that each first dehydration element 31 has a separate guide channel, thereby avoiding the situation where liquid water cannot be discharged smoothly due to the connection of the guide channels, and also avoiding the situation where a malfunction of a guide tube 311 causes the liquid water to be discharged smoothly.

[0049] The following takes the example that the dehydration structure 3 only includes one first dehydration component 31 to describe the working process of the dehydration structure 3 in detail.

[0050] See Figure 1 and Figure 5 That is, in this embodiment, the number of first dehydration elements 31 and the number of guide cylinders 311 are both one; at this time, the center lines of the outer shell 1, the center lines of the emptying cylinder 2, the center lines of the first dehydration element 31, and the center lines of the guide cylinder 311 coincide with each other, thereby ensuring that the time for droplets to flow from all directions of the first dehydration element 31 to the center of the guide cylinder 311 is the same, thereby enabling the diversion work to be completed quickly and efficiently.

[0051] For details, see Figure 1 、 Figure 2 and Figures 4 to 6 In this embodiment, the first dehydration component 31 includes at least one layer of dehydration section 312 arranged at intervals along the direction of gravity. The dehydration section 312 includes a plurality of baffle groups 3121 arranged at intervals along the circumference of the guide tube 311. The plurality of baffle groups 3121 are arranged to form a fluid channel 3122. The guide tube 311 is connected to the lower end of the first dehydration component 31 and is connected to the fluid channel 3122.

[0052] See Figure 1 、 Figure 2 、 Figure 5 and Figure 6 The steam moves upward from the bottom along the gap between the side wall 11 of the outer shell 1 and the first dehydration component 31 to the baffle group 3121 of each dehydration part 312, and then flows inward along the outer side of the multiple baffle groups 3121 of each dehydration part 312 to the fluid channel 3122 formed by the multiple baffle groups 3121. It moves upward along the fluid channel 3122 and passes through the second dehydration component 32, and then is discharged through the emptying cylinder 2. After passing through the first dehydration component 31, the steam can be filtered out of liquid water for the first time, and then after passing through the second dehydration component 32, the liquid water can be filtered out for the second time. Finally, the filtered liquid water can be guided into the guide cylinder 311 through the fluid channel 3122 and discharged.

[0053] For further information, see Figures 4 to 6 The dehydration part 312 located at the bottom of the first dehydration part 31 also includes a first sealing plate 3123 for sealing the fluid channel 3122, and a second sealing plate 3124 is arranged between the two adjacent baffle groups 3121 of the remaining dehydration parts 312 in the first dehydration part 31, that is, the second sealing plate 3124 is arranged in the space enclosed by the two adjacent baffle groups 3121 of the remaining dehydration parts 312 in the first dehydration part 31 and the side wall 11 of the outer shell 1.

[0054] By providing a first sealing plate 3123 and a second sealing plate 3124, the present invention allows steam to flow through the first dehydration element 31 along a predetermined path. Specifically, the first sealing plate 3123 seals the bottom end of the fluid channel 3122 of the first dehydration element 31, and the second sealing plate 3124 seals the space enclosed by the sidewall 11 of the outer shell 1 and the adjacent baffle groups 3121 in each dehydration section 312 of the first dehydration element 31. As a result, the steam first enters each dehydration section 312 along the gap between the sidewall 11 of the outer shell 1 and the multiple baffle groups 3121 of each dehydration section 312, and then moves upward along the fluid channel 3122. The horizontal movement of the steam between the dehydration sections 312 increases its contact area with the baffle groups 3121, thereby causing droplets in the steam to adhere to the baffle groups 3121, completing the initial filtration of liquid water.

[0055] In the embodiment where the dehydration structure 3 includes two first dehydration components 31, the guide tube 311 in the upper first dehydration component 31 can pass through the other first dehydration component 31 below the first dehydration component 31. Figure 5 and Figure 6 The guide tube 311 of the upper first dehydration element 31 sequentially passes through each dehydration section 312 of the other first dehydration element 31 located below it. The guide tube 311 of the lower first dehydration element 31 is connected to the first sealing plate 3123 of the lowest dehydration section 312 of the lower first dehydration element 31. Of course, the guide tubes 311 of the upper first dehydration element 31 and the guide tubes 311 of the lower first dehydration element 31 should be staggered. This embodiment only describes the case where the dehydration structure 3 includes two first dehydration elements 31. When the dehydration structure 3 includes three, four, or more first dehydration elements 31, the arrangement of the guide tubes 311 is similar and will not be described in detail here.

[0056] In some embodiments, see Figures 4 to 9Each baffle group 3121 includes two baffles 31211 arranged in parallel, with a gap D between the two baffles 31211. The second dehydration element 32 is located directly above the gap D of the topmost dehydration section 312 in at least one first dehydration element 31 and directly above the fluid channel 3122 of the topmost dehydration section 312 in at least one first dehydration element 31.

[0057] Those skilled in the art will understand that when steam passes through the topmost dehydration section 312 of at least one first dehydration element 31, it moves upward through the gap D between the baffle plates 3121 of the topmost dehydration section 312 of the at least one first dehydration element 31 and the fluid channel 3122 of the topmost dehydration section 312 of the at least one first dehydration element 31. Positioning the second dehydration element 32 directly above this gap D and the fluid channel 3122 ensures that the steam can filter out liquid water a second time after filtering out the first liquid water, thereby reducing the "white pollution" generated by steam discharge.

[0058] In some embodiments, see Figure 8 Each baffle 31211 (i.e., the baffle group 3121 includes the baffle 31211A and the baffle 31211B) includes a first baffle 31211a and a second baffle 31211b connected to each other, and the free end of the first baffle 31211a and the free end of the second baffle 31211b are both inclined along the direction of gravity, and the horizontal height H1 of the free end of the first baffle 31211a is higher than the horizontal height H2 of the free end of the second baffle 31211b.

[0059] The design adopted in the present invention can ensure that the droplets attached to the baffle 31211 can flow from the first baffle 31211a to the second baffle 31211b, so that the droplets flow along the free end of the second baffle 31211b to the fluid channel 3122, and then fall on the first sealing plate 3123 sealed at the bottom end of the fluid channel 3122. Finally, the droplets are discharged along the guide tube 311 below the first sealing plate 3123 that is connected to the fluid channel 3122.

[0060] In some embodiments, see Figures 7 to 9Each baffle group 3121 includes a baffle 31211A and a baffle 31211B, and the baffle 31211A and the baffle 31211B are symmetrically arranged along the gap D therebetween, wherein the horizontal height H1 of the free end of the first baffle 31211a of the baffle 31211A is higher than the horizontal height H2 of the free end of the second baffle 31211b of the baffle 31211A, and the horizontal height H1 of the free end of the first baffle 31211a of the baffle 31211B is higher than the horizontal height H2 of the free end of the second baffle 31211b of the baffle 31211B, and the free end of the first baffle 31211a of the baffle 31211A is arranged far away from the free end of the first baffle 31211a of the baffle 31211B.

[0061] In some embodiments, see Figure 9 The baffle 31211 is a corrugated plate with one corrugation, formed as a single piece. Specifically, the connection between the first baffle 31211a and the second baffle 31211b of each baffle 31211 forms an arc-shaped transition structure. This design facilitates faster and more convenient procurement, while also providing more uniform and stable force transmission.

[0062] Those skilled in the art should understand that in this embodiment, Figure 6 As shown, first sealing plates 3123 may also be provided in the gaps D between the baffle groups 3121 in the lowest dehydration section 312 of at least one first dehydration element 31. This design directs liquid droplets from at least one first dehydration element 31 toward the gaps D, allowing them to land on the first sealing plates 3123 below these gaps D. Ultimately, the droplets flow along the first sealing plates 3123 toward the fluid channels 3122 and are discharged from the guide tube 311.

[0063] In some embodiments, see Figure 3 The second dehydration element 32 is a porous plate 321 having a plurality of perforations 3211. Those skilled in the art will appreciate that, to reduce the liquid droplet content in the steam, the number of perforations 3211 on the porous plate 321 can be adjusted according to actual needs. Of course, the radius of the perforations 3211 can also be adjusted as needed. As long as the number and radius of the perforations 3211 on the porous plate 321 ensure that the steam can complete the second filtration of liquid water, the process falls within the scope of the present invention.

[0064] In some embodiments, see Figures 1 to 9Specifically, each dehydration section 312 has four baffle groups 3121, which are evenly spaced along the circumference of the guide tube 311. Those skilled in the art will appreciate that the number of baffle groups 3121 can be adjusted based on actual operating conditions, such as to three, five, or any other number, as long as the baffle groups can filter out liquid water.

[0065] In another embodiment, see Figure 1 The flash steam dehydration device 10 further includes a guide plate 4 disposed in the inner cavity 14. The guide plate 4 is located between the drain tube 2 and the dehydration structure 3, and the area of ​​the guide plate 4 is larger than the cross-sectional area of ​​the drain tube 2. The area of ​​the guide plate 4 being larger than the cross-sectional area of ​​the drain tube 2 means that the projected area of ​​the drain tube 2 in a horizontal plane is not larger than the projected area of ​​the guide plate 4 in the horizontal plane.

[0066] The present invention adopts this design because the guide plate 4 can control and guide the flow direction of the steam, thereby preventing the steam from directly entering the emptying cylinder 2 and being discharged, and then causing the steam to collide with the inner wall of the outer shell 1 to further filter out the liquid water therein, ultimately reducing the "white pollution" that occurs when the steam is discharged.

[0067] Specifically, the guide plate 4 includes a first guide plate 41 and a second guide plate 42 that are arranged at an angle. The connection position of the first guide plate 41 and the second guide plate 42 is located directly below the emptying tube 2. The free ends of the first guide plate 41 and the second guide plate 42 are both arranged to be tilted downward toward the dehydration structure 3. Therefore, after the steam passes through the dehydration structure 3 and continues to move upward, it is blocked by the first guide plate 41 and the second guide plate 42, thereby changing the flow direction of the steam, causing the steam to be filtered out of liquid water again, and preventing the steam from directly entering the emptying tube 2 and being discharged. It should be understood by those skilled in the art that the free ends of the first guide plate 41 and the second guide plate 42 can also be arranged to be tilted upward toward the top 13 of the outer shell 1. This is not a limitation here, as long as the purpose of changing the steam discharge flow direction can be achieved.

[0068] In some embodiments, see Figure 1 and Figure 2 The flash steam dehydration device 10 further includes a mounting frame 7, to which the aforementioned evacuation drum 2, dehydration structure 3, and guide plate 4 are fixed. The mounting frame 7 is fixed within the outer casing 1 of the flash steam dehydration device 10. The provision of the mounting frame 7 improves the integration of the product and facilitates overall installation and removal.

[0069] In some embodiments, see Figure 1In order to facilitate the installation, inspection and maintenance of the flash steam dehydration device 10 , a manhole 112 is provided on the side wall 11 of the outer shell 1 , and the manhole 112 is located below the dehydration structure 3 .

[0070] In some embodiments, see Figure 1 A pressure gauge 113 is provided on the side wall 11 of the outer shell 1, located above the dehydration structure 3. A thermometer 114 is provided on the side wall 11 of the outer shell 1, located below the dehydration structure 3. A liquid level gauge 115 is provided on the side wall 11 of the outer shell 1, located above and below the sewage inlet 111. The presence of pressure gauge 113, thermometer 114, and liquid level gauge 115 allows for timely monitoring of certain operating parameters of the flash steam dehydration device 10, ensuring that the equipment operates within a safe range and, in turn, ensuring production and personnel safety.

[0071] In some embodiments, see Figure 1 The sewage outlet 121 is externally connected to a water seal structure 5 , which includes a sewage pipe 51 and a water seal pipeline 52 .

[0072] Specifically, one end of the sewage pipe 51 is connected to the sewage outlet 121, and the other end of the sewage pipe 51 is connected to a valve 511; the water seal pipeline 52 has a first vertical pipe 521, a second vertical pipe 522 and a horizontal pipe 523 connected between the first vertical pipe 521 and the second vertical pipe 522. The water seal pipeline 52 is generally an inverted U-shaped pipe structure, wherein the first vertical pipe 521 is connected to the sewage pipe 51, and the second vertical pipe 522 is connected to the sewage pipe 51, and the valve 511 is located on the sewage pipe 51 between the first vertical pipe 521 and the second vertical pipe 522.

[0073] The present invention can store a certain amount of cold water in the outer shell 1 by providing a water seal structure 5, thereby preventing the cold water stored in the outer shell 1 from being directly lost; in addition, in order to ensure that the low point of the outer shell 1 can drain water, a valve 511 is connected to the sewage pipe 51. Those skilled in the art should understand that the valve 511 should be in a normally closed state, and the valve 511 will be opened only when the sewage in the outer shell 1 needs to be discharged.

[0074] In order to ensure that the amount of cold water stored in the outer shell 1 meets the usage requirements, in some embodiments, see Figure 1The horizontal pipe 523 has a height H3 higher than the liquid level H4 in the outer shell 1, thereby ensuring that the liquid does not lose volume after entering the water seal pipe 52 through the drainage pipe 51. As the dehydration capacity of the dehydration structure 3 increases, the amount of liquid stored in the outer shell 1 continues to increase. This liquid can flow along the first vertical pipe 521 into the horizontal pipe 523, then enter the drainage pipe 51 through the second vertical pipe 522 and out, thereby preventing the liquid level in the outer shell 1 from exceeding the preset position.

[0075] Those skilled in the art should understand that in order to fix the flash steam dehydration device 10 and enable it to function normally, a plurality of legs 6 capable of supporting the outer shell 1 are also connected to the lower end of the outer shell 1. These legs 6 are conventional fixing structures and are not the focus of the present invention, so they will not be described in detail here.

[0076] The present invention is not limited to the aforementioned specific embodiments, and any substantial improvements made without departing from the spirit of the present invention are within the scope of protection of the claims.

[0077] The above are only several embodiments of the present invention. Those skilled in the art may make various changes or modifications to the embodiments of the present invention based on the contents disclosed in the application documents without departing from the spirit and scope of the present invention.

Claims

1. A flash steam dehydration device, characterized in that: include: An outer shell, wherein a sewage inlet is provided on a side wall of the outer shell, and a sewage outlet is provided at the bottom of the outer shell; an emptying cylinder, the emptying cylinder being arranged on the top of the outer shell and being used for connecting the interior and the exterior of the outer shell; and a dehydration structure, the dehydration structure being arranged inside the outer shell, the dehydration structure being located above the sewage inlet and below the emptying cylinder; Wherein, the dehydration structure comprises: At least one first dehydration element, wherein the at least one first dehydration element is arranged at intervals along the direction of gravity, and the lower end of each first dehydration element is connected to a guide cylinder; a second dehydration element, the second dehydration element being disposed above the at least one first dehydration element; The first dehydration element includes at least one layer of dehydration parts arranged at intervals along the gravity direction, the dehydration parts include a plurality of baffle groups arranged at intervals along the circumference of the guide cylinder, the plurality of baffle groups are arranged to form a fluid channel, and the guide cylinder is connected to the fluid channel; The dehydration section located at the bottom of the at least one first dehydration element further includes a first sealing plate for sealing the fluid channel, and a second sealing plate is sealed between two adjacent baffle groups of each dehydration section in the at least one first dehydration element; Each of the guide tubes passes through each of the first dehydration components located therebelow in sequence and extends into the inner cavity of the outer shell located below the sewage inlet.

2. The flash steam dehydration device according to claim 1, characterized in that Each of the baffle groups includes two baffles arranged in parallel, with a gap between the two baffles, and the second dehydration element is located directly above the gap of the topmost dehydration section in the at least one first dehydration element and directly above the fluid channel of the topmost dehydration section in the at least one first dehydration element.

3. The flash steam dehydration device according to claim 2, characterized in that: The baffle includes a first baffle and a second baffle connected to each other. The free end of the first baffle and the free end of the second baffle are both inclined along the direction of gravity, and the horizontal height of the free end of the first baffle is higher than the horizontal height of the free end of the second baffle.

4. The flash steam dehydration device according to claim 1 or 2, characterized in that: The second dehydration component is a porous plate, and a plurality of perforations are provided on the porous plate.

5. The flash steam dehydration device according to claim 1, characterized in that: The number of the baffle groups in each of the dehydration parts is four, and the four baffle groups are arranged at equal intervals along the circumference of the guide tube.

6. The flash steam dehydration device according to claim 1, characterized in that: The flash steam dehydration device further includes a guide plate, which is located between the emptying cylinder and the dehydration structure, and the area of ​​the guide plate is larger than the cross-sectional area of ​​the emptying cylinder.

7. The flash steam dehydration device according to claim 6, characterized in that: The guide plate has a first guide plate and a second guide plate set at an angle. The connection position of the first guide plate and the second guide plate is located directly below the emptying cylinder. The free end of the first guide plate and the free end of the second guide plate are both inclined downward toward the dehydration structure.

8. The flash steam dehydration device according to claim 1, characterized in that: A manhole is provided on the side wall of the outer shell, and the manhole is located below the dehydration structure.

9. The flash steam dehydration device according to claim 1, characterized in that: A pressure gauge is provided on the side wall of the outer shell, and the pressure gauge is located above the dehydration structure; a thermometer is provided on the side wall of the outer shell, and the thermometer is located below the dehydration structure; a liquid level gauge is respectively provided on the side wall of the outer shell above and below the sewage inlet.

10. The flash steam dehydration device according to claim 1, characterized in that: The sewage outlet is externally connected to a water seal structure, and the water seal structure includes: A sewage pipe is connected to the sewage outlet, and a valve is connected to the sewage pipe; The water seal pipeline has a first vertical pipe, a second vertical pipe and a horizontal pipe connected between the first vertical pipe and the second vertical pipe. The first vertical pipe is connected to the sewage pipe, the second vertical pipe is connected to the sewage pipe, and the valve is located on the sewage pipe between the first vertical pipe and the second vertical pipe.

11. The flash steam dehydration device according to claim 10, characterized in that: The horizontal pipe has a height higher than the liquid level in the outer shell.

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