CN110848660A - Flash steam dehydration device - Google Patents

Abstract

The invention discloses a flash steam dehydration device, comprising: the side wall of the outer shell is provided with a sewage outlet; the emptying cylinder is arranged at the top of the outer shell and is used for communicating the inside and the outside of the outer shell; the dewatering structure is arranged in the outer shell, and is positioned above the sewage draining inlet and below the emptying barrel; wherein, dewatering structure includes: the at least one first dewatering piece is arranged at intervals along the gravity direction, and the lower end of each first dewatering piece is connected with a guide cylinder; and a second dewatering member disposed above the at least one first dewatering member. The flash steam dehydration device is internally provided with the dehydration structure, so that the contact area between the flash steam dehydration device and steam can be relatively increased, liquid drops in the steam are attached to the dehydration structure to form large liquid drops, the drag force of discharged steam is overcome by utilizing the surface tension of water and the gravity action of the large liquid drops, and the emptying of liquid water is reduced.

Description

Flash steam dehydration device

Technical Field

The invention relates to the technical field of power plant boiler equipment, in particular to a flash steam dehydration device.

Background

The periodic blowdown flash tank is an important device of a steam boiler system, and is called 'fixed exhaust' for short. The low points of the devices which are easy to store up the sewage, such as a steam drum, a header, a continuous sewage discharge flash tank, a deaerator and the like in the steam boiler system all need to discharge the sewage outwards the system according to a certain rule, and the sewage is taken away through the drainage in the drainage mode to realize the sewage discharge. The fixed row is a device for receiving the drainage and treating the drainage uniformly. The types and the contents of the dirt contained in the drainage water are different, the pressure, the temperature and the flow rate of the drainage water are different, the time for entering the fixed drainage is not determined, namely, the incoming water in the fixed drainage has intermittence, the fluctuation of the pressure, the temperature and the flow rate of the incoming water is large, and the fluctuation of the types and the contents of the dirt contained in the incoming water is large.

The fixed discharge is a container directly communicated with the atmosphere, after the incoming water enters the fixed discharge, flash evaporation is generated due to the release of pressure energy and kinetic energy and the conversion of heat energy, part of water is converted from liquid state into gas state, the converted steam is mainly discharged to the atmosphere through a discharge opening, other water becomes undersaturated water after releasing part of enthalpy value, and the undersaturated water is mainly discharged through a waste water outlet.

Due to the characteristics of the fixed drainage, in the process of violent drainage and subsequent flash evaporation and drainage, part of liquid water is carried by steam and is drained from a drainage port, so that the phenomenon called 'white pollution' is formed. That is, the steam is exhausted to the atmosphere, and because the ambient temperature is much lower than the steam temperature, the steam exothermically condenses into liquid water droplets, which appear white in the air. When part of liquid water is carried by steam and discharged from a drain port, the density of the liquid water is nearly thousand times that of the steam, the amount of the liquid water is far greater than the amount of the condensed steam in most cases, and the white volume formed by the liquid water is far greater than the white volume formed by the condensed steam.

In recent years, efforts have been made to reduce and eliminate "white pollution", but the effect is not so great. Some methods use water spray under the evacuation port, and some methods use a heat exchanger in the barrel. These methods seek solutions primarily from a heat exchange point of view, but are not effective because the residence time of the steam in the fixed row is too short.

Disclosure of Invention

The invention aims to provide a flash steam dehydration device to solve the problem of white pollution in a steam boiler system.

The above object of the present invention can be achieved by the following technical solutions:

the invention provides a flash steam dehydration device, comprising: the sewage draining device comprises an outer shell, a sewage draining pipe and a water inlet pipe, wherein a sewage draining inlet is formed in the side wall of the outer shell, and a sewage draining outlet is formed in the bottom of the outer shell; the emptying cylinder is arranged at the top of the outer shell and is used for communicating the inside and the outside of the outer shell; the dewatering structure is arranged inside the outer shell and is positioned above the sewage draining inlet and below the emptying barrel; wherein the dewatering structure comprises: the device comprises at least one first dewatering piece, at least one second dewatering piece and a control device, wherein the at least one first dewatering piece is arranged at intervals along the gravity direction, and the lower end of each first dewatering piece is connected with a guide cylinder; a second dewatering member disposed above the at least one first dewatering member.

Preferably, each guide cylinder sequentially passes through each first dewatering element positioned below the guide cylinder and extends into an inner cavity of the outer shell positioned below the sewage inlet.

Preferably, wherein, first dewatering component includes at least one deck dehydration portion that sets up along the direction of gravity interval, dehydration portion includes along a plurality of baffle groups that the circumference interval of draft tube set up, a plurality of baffle groups enclose and establish and form fluid passage, the draft tube with fluid passage is linked together.

Preferably, the dewatering part positioned at the lowest position in the at least one first dewatering component further comprises a first sealing plate for sealing the fluid channel, and a second sealing plate is arranged between every two adjacent baffle groups of each dewatering part in the at least one first dewatering component in a sealing mode.

Preferably, each of the baffle groups includes two baffles arranged in parallel, a gap is formed between the two baffles, and the second dewatering element is located directly above the gap of the uppermost dewatering part of the at least one first dewatering element and directly above the fluid passage of the uppermost dewatering part of the at least one first dewatering element.

Preferably, the baffle plate comprises a first baffle plate and a second baffle plate which are connected, the free end of the first baffle plate and the free end of the second baffle plate are both obliquely arranged along the gravity direction, and the horizontal height of the free end of the first baffle plate is higher than that of the free end of the second baffle plate.

Preferably, the second dewatering member is a perforated plate, and the perforated plate is provided with a plurality of perforations.

Preferably, the number of the baffle groups of each dewatering part is four, and the four baffle groups are arranged at equal intervals along the circumferential direction of the guide cylinder.

Preferably, the flash steam dehydration device further comprises a baffle plate, the baffle plate is located between the evacuation cylinder and the dehydration structure, and the area of the baffle plate is larger than the area of the cross section of the evacuation cylinder.

Preferably, the guide plate is provided with a first guide plate and a second guide plate which are arranged at an angle, the connecting position of the first guide plate and the second guide plate is located under the emptying cylinder, and the free end of the first guide plate and the free end of the second guide plate are both inclined downwards towards the dewatering structure.

Preferably, a manhole is arranged on the side wall of the outer shell, and the manhole is located below the dewatering structure.

Preferably, a pressure gauge is arranged on the side wall of the outer shell and is positioned above the dewatering structure; a thermometer is arranged on the side wall of the outer shell and is positioned below the dehydration structure; and the side walls of the outer shell body which are positioned above the sewage inlet and below the sewage inlet are respectively provided with a liquid level meter.

Preferably, a manhole is arranged on the side wall of the outer shell, and the manhole is located below the dewatering structure.

Preferably, a pressure gauge is arranged on the side wall of the outer shell and is positioned above the dewatering structure; a thermometer is arranged on the side wall of the outer shell and is positioned below the dehydration structure; and the side walls of the outer shell body which are positioned above the sewage inlet and below the sewage inlet are respectively provided with a liquid level meter.

Preferably, wherein, the sewage outlet is externally connected with a water seal structure, the water seal structure comprises: the sewage discharge pipeline is connected with the sewage discharge outlet and is connected with a valve; the water seal pipeline is provided with 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 with the sewage discharge pipeline, the second vertical pipe is connected with the sewage discharge pipeline, and the valve is positioned on the sewage discharge pipeline between the first vertical pipe and the second vertical pipe.

Preferably, wherein the level of the level tube is higher than the level of the liquid inside the outer shell.

The invention has the characteristics and advantages that:

according to the flash steam dehydration device, the dehydration structure is arranged in the flash steam dehydration device, the contact area between the dehydration structure and steam can be relatively increased, liquid drops in the steam are attached to the dehydration structure to form large liquid drops, the drag force of steam exhaust is overcome by utilizing the surface tension of water and the gravity action of the large liquid drops, and the evacuation of liquid water is reduced.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a structural view of a flash steam dehydration apparatus of the present invention;

FIG. 2 is a block diagram of a dewatering structure according to the present invention;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 4 is a cross-sectional view taken along line B-B of FIG. 1;

figure 5 is a top view of an embodiment of the lowermost dewatering section in the first dewatering element according to the invention;

figure 6 is a top view of another embodiment of the lowermost dewatering section in the first dewatering element according to the invention;

FIG. 7 is a top view block diagram of a baffle set of the present invention;

FIG. 8 is a front view block diagram of a baffle group of the present invention;

fig. 9 is a front view block diagram of another embodiment of a baffle group of the present invention.

Description of reference numerals:

10. a flash steam dehydration device; 1. an outer housing; 11. a side wall of the outer housing; 111. a sewage draining inlet; 112. a manhole; 113. a pressure gauge; 114. a thermometer; 115. a liquid level meter; 12. the bottom of the outer shell; 121. a sewage discharge outlet; 13. a top of the outer housing; 14. an inner cavity of the outer shell; 2. an evacuation cylinder; 3. a dewatering structure; 31. a first dewatering member; 311. a draft tube; 312. a dewatering part; 3121. a set of baffles; 31211. a baffle plate; 31211A, a baffle plate; 31211B, a baffle plate; 31211a, a first baffle; 31211b, a second baffle; 3122. a fluid channel; 3123. a first sealing plate; 3124. a second sealing plate; 32. a second dewatering member; 321. a perforated plate; 3211. perforating; 4. a baffle; 41. a first baffle; 42. a second baffle; 5. a water seal structure; 51. a blowdown line; 511. a valve; 52. a water seal pipeline; 521. a first vertical pipe; 522. a second vertical pipe; 523. a horizontal tube; 6. a support leg; 7. a mounting frame; D. a gap between the two baffles; h1, the level of the free end of the first baffle plate; h2, the level of the free end of the second baffle plate; h3, level of the level tube; h4, liquid level height inside the outer shell; F. the setting direction of the guide shell.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 9, the invention provides a flash steam dehydration device 10, which comprises an outer shell 1, an evacuation cylinder 2 and a dehydration structure 3. Specifically, referring to fig. 1, a sewage inlet 111 is arranged on the side wall 11 of the outer shell 1, and a sewage outlet 121 is arranged at the bottom 12 of the outer shell 1; the evacuation cylinder 2 is arranged at the top 13 of the outer shell 1 and is used for communicating the inside and the outside of the outer shell 1; the dewatering structure 3 is arranged inside the outer casing 1 (i.e. the inner cavity 14 of the outer casing 1), and the dewatering structure 3 is located above the sewage inlet 111 and below the emptying cartridge 2. Referring to fig. 2 to 6, the dewatering structure 3 includes: at least one first dewatering component 31 and a second dewatering component 32, wherein the at least one first dewatering component 31 is arranged at intervals along the gravity direction, and the lower end of each first dewatering component 31 is connected with a guide cylinder 311; the second dewatering element 32 is arranged above at least one first dewatering element 31.

It should be understood by those skilled in the art that the outer casing 1 may be cylindrical or spherical, and may be horizontal or vertical in the present embodiment. In some preferred embodiments, the outer shell 1 is a cylindrical structure with two closed ends, the guide cylinder 311 and the emptying cylinder 2 are both cylindrical structures with two open ends, and the outer shell 1, the guide cylinder 311 and the emptying cylinder 2 are all in an upright state.

The dehydration structure 3 is arranged in the dehydration structure, so that the contact area of the dehydration structure and the steam is increased, liquid drops in the steam are attached to the dehydration structure 3 to form large liquid drops, the drag force of the discharged steam is overcome by utilizing the surface tension of the water and the gravity action of the large liquid drops, and the emptying of the liquid water is reduced.

The following describes the dehydration process of the flash steam dehydration apparatus 10:

the sewage enters the inside 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, then forms steam and wastewater through decompression and expansion, the wastewater is stored in the inside of the outer shell 1 (i.e. the inner cavity 14 of the outer shell 1), and the steam moves upwards through the dewatering structure 3.

When steam through dewatering structure 3, pass through at least one first dewatering piece 31 along the interval setting of direction of gravity in proper order to guarantee that steam and dewatering structure 3's area of contact satisfies the dehydration demand, steam and first dewatering piece 31 contact the back, and liquid wherein is stained with and attaches on first dewatering structure 3's surface and forms big liquid drop, then utilizes the drag force of the gravity action of the surface tension of water and big liquid drop to overcome the steam extraction, carries out primary filtering to the liquid water in the steam.

When the steam passes through the second dewatering elements 32 in the dewatering structure 3, the remaining liquid water in the steam contacts and adheres to the surfaces of the second dewatering elements 32, and then the liquid water in the steam is secondarily filtered by overcoming the drag force of the discharged steam by using the surface tension of the water and the gravity of the large liquid drops.

When the liquid drops attached to the surface of each first dewatering element 31 continuously increase, the liquid drops can be collected into the guide cylinder 311 connected to the lower end of each first dewatering element 31 and discharged from the guide cylinder 311. It should be understood by those skilled in the art that both the first filtered liquid water and the second filtered liquid water in the steam can be discharged along the setting direction F of the guide cylinder 311.

In some embodiments, referring to fig. 1 and 6, each guide cylinder 311 sequentially passes through each first dewatering element 31 located therebelow and extends into the inner cavity 14 of the outer casing 1 located below the sewage inlet 111, and in some embodiments, the inner cavity 14 stores a liquid medium, such as water.

It should be understood by those skilled in the art that, in the embodiment, when the guide cylinders 311 connected to the lower ends of the first dewatering elements 31 sequentially pass through the first dewatering elements 31 located below the first dewatering elements, the guide cylinders 311 are arranged in a staggered manner, so as to ensure that the guide cylinders 311 are not affected with each other, and further ensure that each first dewatering element 31 has an independent guide channel, thereby avoiding the situation that liquid water cannot be smoothly discharged due to the communication of the guide channels, and also avoiding the situation that a certain guide cylinder 311 fails, which results in the situation that liquid water cannot be smoothly discharged.

The operation of the dewatering structure 3 will be described in detail below, taking as an example that the dewatering structure 3 comprises only one first dewatering element 31.

Referring to fig. 1 and 5, that is, in this embodiment, the number of the first dehydrating members 31 and the number of the guide cylinders 311 are one; at this time, the center line of the outer shell 1, the center line of the emptying cylinder 2, the center line of the first dewatering part 31 and the center line of the guide cylinder 311 coincide with each other, so that the time for the liquid drops to flow from all directions of the first dewatering part 31 to the center of the guide cylinder 311 can be ensured to be the same, and the guide work can be completed quickly and efficiently.

Specifically, referring to fig. 1, 2 and 4 to 6, in this embodiment, the first dewatering element 31 includes at least one layer of dewatering portion 312 spaced apart in the direction of gravity, the dewatering portion 312 includes a plurality of baffle groups 3121 spaced apart in the circumferential direction of the guide cylinder 311, the plurality of baffle groups 3121 enclose to form a fluid passage 3122, and the guide cylinder 311 is connected to the lower end of the first dewatering element 31 and is communicated with the fluid passage 3122.

Referring to fig. 1, 2, 5 and 6, the steam moves upward from below along the gap between the sidewall 11 of the outer shell 1 and the first dewatering elements 31 to the baffle groups 3121 of each dewatering section 312, then flows to the fluid passages 3122 surrounded by the baffle groups 3121 along the outer sides of the baffle groups 3121 of each dewatering section 312 to flow upward along the fluid passages 3122 and pass through the second dewatering elements 32, and then is discharged through the emptying cylinder 2, the steam can be primarily filtered by the first dewatering elements 31 to remove liquid water, and then can be secondarily filtered by the second dewatering elements 32 to remove liquid water, and finally the liquid water after being filtered can be guided to the guide cylinder 311 through the fluid passages 3122 and discharged.

Further, referring to fig. 4 to 6, the lowermost dewatering section 312 of the first dewatering element 31 further includes a first sealing plate 3123 for sealing the fluid passage 3122, and a second sealing plate 3124 is disposed between every two adjacent baffle groups 3121 of the remaining dewatering sections 312 of the first dewatering element 31, that is, the second sealing plate 3124 is disposed in a space enclosed between the every two adjacent baffle groups 3121 of the remaining dewatering sections 312 of the first dewatering element 31 and the sidewall 11 of the outer casing 1.

The present invention enables steam to pass through the first dewatering elements 31 in a predetermined path by providing the first and second sealing plates 3123 and 3124, that is, the first sealing plate 3123 seals the bottom ends of the fluid passages 3122 of the first dewatering elements 31, and the second sealing plate 3124 seals the space surrounded by the baffle groups 3121 adjacent to each other in each dewatering section 312 of the first dewatering elements 31 and the sidewall 11 of the outer casing 1, so that the steam firstly enters each dewatering section 312 along the gap between the sidewall 11 of the outer casing 1 and the plurality of baffle groups 3121 of each dewatering section 312 and then moves upward along the fluid passages 3122. The horizontal movement of the steam among the dehydration parts 312 can increase the contact area between the steam and the baffle groups 3121, so that the droplets in the steam can be attached to the baffle groups 3121, thereby completing the first filtration of the liquid water.

In an embodiment where the dewatering structure 3 comprises two first dewatering elements 31, the guide shell 311 in the upper first dewatering element 31 can pass through the other first dewatering element 31 below this first dewatering element 31. That is, referring to fig. 5 and 6, the guide cylinder 311 of the upper first dewatering member 31 passes through each dewatering section 312 of the other lower first dewatering member 31 in turn, and the guide cylinder 311 of the lower first dewatering member 31 is connected to the first sealing plate 3123 of the lowermost dewatering section 312 of the lower first dewatering member 31, of course, the guide cylinder 311 of the upper first dewatering member 31 and the guide cylinder 311 of the lower first dewatering member 31 should be arranged in a staggered manner. In this embodiment, only the case that the dewatering structure 3 includes two first dewatering elements 31 is described, and when the dewatering structure 3 includes three, four or more first dewatering elements 31, the arrangement of the guide cylinder 311 is similar, and so on, and no further description is given here.

In some embodiments, referring to fig. 4 to 9, each baffle group 3121 comprises two baffles 31211 arranged in parallel, the two baffles 31211 having a gap D therebetween, and the second dewatering element 32 is located directly above the gap D of the uppermost dewatering section 312 of the at least one first dewatering element 31 and directly above the fluid passage 3122 of the uppermost dewatering section 312 of the at least one first dewatering element 31.

It will be clear to the person skilled in the art that the steam passes through the uppermost dewatering section 312 of the at least one first dewatering element 31, i.e. it passes through the gap D in each baffle group 3121 of the uppermost dewatering section 312 of the at least one first dewatering element 31 and moves upwards in the fluid passage 3122 of the uppermost dewatering section 312 of the at least one first dewatering element 31. With second dewatering piece 32 setting directly over this clearance D and this fluid passage 3122, can guarantee that can also carry out the liquid water of secondary filtering after the liquid water of the first filtering of steam, and then "white pollution" that produces when reducing steam and discharging.

In some embodiments, referring to fig. 8, each baffle 31211 (i.e., the baffle group 3121 includes a baffle 31211A and a baffle 31211B) includes a first baffle 31211A and a second baffle 31211B connected to each other, a free end of the first baffle 31211A and a free end of the second baffle 31211B are inclined in a gravity direction, and a horizontal height H1 of the free end of the first baffle 31211A is higher than a horizontal height H2 of the free end of the second baffle 31211B.

By adopting the design, the liquid drops attached to the baffle plate 31211 can be ensured to flow from the first baffle plate 31211a to the second baffle plate 31211b, so that the liquid drops flow to the fluid channel 3122 along the free end of the second baffle plate 31211b, and then fall on the first sealing plate 3123 sealed at the bottom end of the fluid channel 3122, and finally the liquid drops are discharged along the guide cylinder 311 which is arranged below the first sealing plate 3123 and communicated with the fluid channel 3122.

In some embodiments, referring to fig. 7-9, each baffle group 3121 includes a baffle 31211A and a baffle 31211B, the baffles 31211A and 31211B being symmetrically disposed along a gap D therebetween, wherein a free end of a first baffle 31211A of baffle 31211A has a higher level H1 than a free end of a second baffle 31211B of baffle 31211A has a higher level H2, a free end of a first baffle 31211A of baffle 31211B has a higher level H1 than a free end of a second baffle 31211B of baffle 31211B has a higher level H2, and the free end of the first baffle 31211A of baffle 31211A is disposed away from the free end of the first baffle 31211A of baffle 31211B.

In some embodiments, referring to fig. 9, the baffle 31211 is a corrugated plate, and the number of corrugations is one, wherein the corrugated plate is an integrally formed piece. That is, an arc-shaped transition structure is formed at the connection position of the first and second baffle plates 31211a and 31211b of each baffle plate 31211. By adopting the design, the purchase is more convenient and quicker; meanwhile, the mechanical transmission is more uniform and stable.

It will be appreciated by those skilled in the art that in this embodiment, as shown in figure 6, a first sealing plate 3123 may also be provided in the at least one first dewatering element 31 at the gap D between each baffle group 3121 in the lowermost dewatering section 312. With this design, the liquid droplets in the at least one first dewatering element 31 can be guided to the position of each gap D, so that the liquid droplets fall on the first sealing plate 3123 below the gaps D, and finally the liquid droplets flow along the first sealing plate 3123 to the fluid passage 3122 and are discharged from the guide cylinder 311.

In some embodiments, referring to fig. 3, the second dewatering element 32 is a perforated plate 321, and the perforated plate 321 is provided with a plurality of perforations 3211. It should be understood by those skilled in the art that the number of the perforations 3211 on the perforated plate 321 can be adjusted according to actual requirements for reducing the content of liquid droplets in the steam, and the radius of the perforations 3211 can also be adjusted according to requirements, so long as the number and radius of the perforations 3211 on the perforated plate 321 cooperate to ensure that the steam completes the second filtration of the liquid water, which is within the scope of the present invention.

In some embodiments, referring to fig. 1 to 9, specifically, the number of the baffle groups 3121 of each dewatering section 312 is four, and the four baffle groups 3121 are equally spaced along the circumferential direction of the guide cylinder 311. It should be understood by those skilled in the art that the number of baffle groups 3121 may be adjusted according to actual conditions, for example, three, five or other numbers, and it is within the scope of the present invention to filter out liquid water.

In another embodiment, referring to fig. 1, the flash steam dehydration device 10 further comprises a baffle 4 disposed in the inner cavity 14, the baffle 4 is located between the evacuation cylinder 2 and the dehydration structure 3, and the area of the baffle 4 is larger than the area of the cross section of the evacuation cylinder 2. Wherein, the area that the area of guide plate 4 is greater than the area of the cross section of evacuation section of thick bamboo 2 means: the projection area of the emptying cylinder 2 in the horizontal plane is not larger than that of the guide plate 4 in the horizontal plane.

By adopting the design, the flow direction of the steam can be controlled and guided by the guide plate 4, so that the steam can be prevented from directly entering the exhaust cylinder 2 to be discharged, the steam is further collided with the inner wall of the outer shell 1 to further filter liquid water in the steam, and the white pollution generated during the steam discharge is finally reduced.

Specifically, the baffle 4 has a first baffle 41 and a second baffle 42 that are the angle setting, and the hookup location department of first baffle 41 and second baffle 42 is located the evacuation section of thick bamboo 2 under, and the free end of first baffle 41, the free end of second baffle 42 all incline towards the downward sloping setting of dewatering structure 3. Therefore, after the steam passes through the dewatering structure 3, and in the process of continuing to move upwards, the steam is blocked by the first guide plate 41 and the second guide plate 42, so that the flow direction of the steam is changed, the steam is filtered again by liquid water, and the steam is prevented from directly entering the emptying cylinder 2 to be discharged. It should be understood by those skilled in the art that the free ends of the first and second deflectors 41 and 42 may be inclined upward toward the top 13 of the outer casing 1, and the present invention is not limited thereto, as long as the purpose of changing the flow direction of the steam discharge can be achieved.

In some embodiments, referring to fig. 1 and 2, the flash steam dehydration device 10 further includes a mounting frame 7, the aforementioned evacuation cylinder 2, the dehydration structure 3 and the baffle 4 are fixed on the mounting frame 7, and the mounting frame 7 is fixed in the outer shell 1 of the flash steam dehydration device 10. According to the invention, the installation frame 7 is arranged, so that the integration level of the product can be improved, and the integral installation and disassembly are facilitated.

In some embodiments, referring to fig. 1, in order to facilitate installation, maintenance and repair of the flash steam dehydration apparatus 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.

In some embodiments, referring to fig. 1, a pressure gauge 113 is disposed on the sidewall 11 of the outer casing 1, and the pressure gauge 113 is located above the dewatering structure 3; a thermometer 114 is arranged on the side wall 11 of the outer shell 1, and the thermometer 114 is positioned below the dewatering structure 3; a liquid level gauge 115 is provided on the sidewall 11 of the outer case 1 above the sewage inlet 111 and below the sewage inlet 111, respectively. Because the pressure gauge 113, the thermometer 114 and the liquid level meter 115 are arranged, some working parameters of the flash steam dehydration device 10 can be detected in time, so that the equipment can be operated within a safety range, and the production safety and the personnel safety can be further ensured.

In some embodiments, referring to fig. 1, a water seal structure 5 is connected outside the sewage outlet 121, and the water seal structure 5 comprises a sewage pipeline 51 and a water seal pipeline 52.

Specifically, one end of the sewage discharge pipe 51 is connected with the sewage outlet 121, and the other end of the sewage discharge pipe 51 is connected with 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, and the water seal pipeline 52 is of a substantially inverted U-shaped pipe structure, wherein the first vertical pipe 521 is connected with the sewage drainage pipeline 51, the second vertical pipe 522 is connected with the sewage drainage pipeline 51, and the valve 511 is located on the sewage drainage pipeline 51 between the first vertical pipe 521 and the second vertical pipe 522.

According to the invention, the water seal structure 5 is arranged, a certain amount of cold water can be stored in the outer shell 1, and the direct loss of the cold water stored in the outer shell 1 is avoided; in addition, in order to ensure that the low point of the outer casing 1 can be drained, a valve 511 is connected to the sewage conduit 51, and it should be understood by those skilled in the art that the valve 511 should be normally closed, and the valve 511 should be opened only when the sewage in the outer casing 1 needs to be drained.

In order to ensure that the amount of cold water stored in the outer casing 1 meets the usage requirement, in some embodiments, please refer to fig. 1, the horizontal height H3 of the horizontal pipe 523 is higher than the liquid level height H4 in the outer casing 1, so as to ensure that the liquid will not run off and be reduced after entering the water seal pipeline 52 through the sewage drainage pipeline 51. When the amount of liquid stored in the outer casing 1 is increased along with the increase of the dehydration amount of the dehydration structure 3, the liquid can enter the horizontal pipe 523 along the first vertical pipe 521, and then enter the sewage pipeline 51 from the second vertical pipe 522 and flow out, so that the liquid level in the outer casing 1 is prevented from exceeding the preset position.

It should be understood by those skilled in the art that, in order to fix the flash steam dehydration device 10 and enable the function thereof to be normally realized, a plurality of legs 6 capable of supporting the outer shell 1 are further connected to the lower end of the outer shell 1, and the legs 6 are conventional fixed structures and are not the key point of the present invention, and will not be described herein again.

The present invention is not limited to the above-described embodiments, and modifications made without departing from the spirit of the invention are within the scope of the claims.

The above are only a few embodiments of the present invention, and those skilled in the art can make various changes or modifications to the embodiments of the present invention according to the disclosure of the application document without departing from the spirit and scope of the present invention.

Claims (14)

1. A flash steam dehydration device is characterized by comprising:

the sewage draining device comprises an outer shell, a sewage draining pipe and a water inlet pipe, wherein a sewage draining inlet is formed in the side wall of the outer shell, and a sewage draining outlet is formed in the bottom of the outer shell;

the emptying cylinder is arranged at the top of the outer shell and is used for communicating the inside and the outside of the outer shell; and

the dewatering structure is arranged in the outer shell, and is positioned above the sewage draining inlet and below the emptying barrel;

wherein the dewatering structure comprises:

the device comprises at least one first dewatering piece, at least one second dewatering piece and a control device, wherein the at least one first dewatering piece is arranged at intervals along the gravity direction, and the lower end of each first dewatering piece is connected with a guide cylinder;

a second dewatering member disposed above the at least one first dewatering member.

2. The flash steam dehydration device according to claim 1, wherein each guide cylinder sequentially passes through each first dehydration member located below the guide cylinder and extends into an inner cavity of the outer shell located below the sewage inlet.

3. The flash steam dehydration device of claim 1, wherein the first dehydration component comprises at least one layer of dehydration part arranged at intervals along the gravity direction, the dehydration part comprises a plurality of baffle groups arranged at intervals along the circumferential direction of the guide cylinder, the baffle groups are enclosed to form a fluid channel, and the guide cylinder is communicated with the fluid channel.

4. The flash steam dehydration apparatus of claim 3 wherein the lowermost of said at least one first dehydration member further comprises a first sealing plate for sealing said fluid passage, and a second sealing plate is sealed between two adjacent baffle groups of each of said dehydration sections of said at least one first dehydration member.

5. The flash steam dehydration apparatus of claim 3 wherein each said set of baffles comprises two baffles arranged in parallel with a gap therebetween, said second dehydration engine being located directly above said gap of the uppermost said dehydration section of said at least one first dehydration engine and directly above said fluid channel of the uppermost said dehydration section of said at least one first dehydration engine.

6. The flash steam dehydration device according to claim 5, wherein the baffle comprises a first baffle plate and a second baffle plate connected together, the free ends of the first baffle plate and the second baffle plate are both inclined along the gravity direction, and the free end of the first baffle plate has a higher level than the free end of the second baffle plate.

7. The flash steam dehydration apparatus according to claim 1 or 5, wherein the second dehydration member is a perforated plate, and the perforated plate is provided with a plurality of perforations.

8. The flash steam dehydration device according to claim 3, wherein the number of the baffle groups of each dehydration section is four, and the four baffle groups are arranged at equal intervals along the circumferential direction of the guide cylinder.

9. The flash steam dehydration device of claim 1 further comprising a deflector positioned between the evacuation tube and the dehydration structure, the deflector having an area greater than the area of the cross-section of the evacuation tube.

10. The flash steam dehydration apparatus according to claim 9,

the guide plate has first guide plate and the second guide plate that is the angle setting, first guide plate with the hookup location department of second guide plate is located under the section of thick bamboo of emptying, the free end of first guide plate the free end of second guide plate all moves towards dehydration structure downward sloping sets up.

11. The flash steam dehydration device of claim 1, wherein a manhole is provided on a side wall of the outer shell, the manhole being located below the dehydration structure.

12. The flash steam dehydration device according to claim 1, wherein a pressure gauge is provided on a side wall of the outer shell, and the pressure gauge is located above the dehydration structure; a thermometer is arranged on the side wall of the outer shell and is positioned below the dehydration structure; and the side walls of the outer shell body which are positioned above the sewage inlet and below the sewage inlet are respectively provided with a liquid level meter.

13. The flash steam dehydration device according to claim 1, characterized in that a water seal structure is connected to the outside of the sewage outlet, and the water seal structure comprises:

the sewage discharge pipeline is connected with the sewage discharge outlet and is connected with a valve;

the water seal pipeline is provided with 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 with the sewage discharge pipeline, the second vertical pipe is connected with the sewage discharge pipeline, and the valve is positioned on the sewage discharge pipeline between the first vertical pipe and the second vertical pipe.

14. The flash steam dehydration apparatus of claim 13, wherein the level of the horizontal tube is higher than the level of the liquid inside the outer shell.

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