CN111664437B - Trickle disk type periodical pollution discharge flash tank - Google Patents
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- CN111664437B CN111664437B CN201910170034.8A CN201910170034A CN111664437B CN 111664437 B CN111664437 B CN 111664437B CN 201910170034 A CN201910170034 A CN 201910170034A CN 111664437 B CN111664437 B CN 111664437B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
- F22B37/48—Devices for removing water, salt, or sludge from boilers; Arrangements of cleaning apparatus in boilers; Combinations thereof with boilers
- F22B37/54—De-sludging or blow-down devices
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Abstract
The invention discloses a water spraying disc type periodical pollution discharge flash tank, which aims to achieve the aims of realizing zero steam emission of the periodical pollution discharge flash tank and ensuring stable operation of equipment. The cooling water distribution device comprises a shell, a cooling water inlet and a sewage discharge inlet, wherein a steam-water separation flow channel, a water distribution disc, a circular water spraying disc and an annular water spraying disc are arranged in the shell, the water distribution disc is arranged above the circular water spraying disc and the annular water spraying disc, the circular water spraying disc and the annular water spraying disc are arranged at intervals from top to bottom, the cooling water inlet is communicated with the space above the water distribution disc, the through-flow part of the circular water spraying disc is arranged in the center of a disc, the through-flow part of the annular water spraying disc is annular, a base disc with the same diameter as the shell is horizontally arranged at the middle lower part in the shell, a cylindrical groove is vertically arranged in the middle of the base disc and penetrates through the base disc, the cylindrical groove below the base disc, the annular space surrounded by the shell and the base disc is a steam-water separation flow channel, and the sewage discharge inlet is communicated with the steam-water separation flow channel.
Description
Technical Field
The invention relates to a pollution discharge flash tank, in particular to a water spraying disc type periodic pollution discharge flash tank which is suitable for being used in pollution discharge systems of various boilers, steam generators and the like.
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 equipment such as a steam drum, a header and a continuous blowdown flash tank in the steam boiler system, which are easy to store up the sewage, need to regularly discharge the sewage out of the system, and the sewage is taken away through drainage in a drainage mode to realize blowdown. The fixed drainage is equipment for receiving the drainage and further carrying out capacity expansion and temperature reduction treatment on the drainage. The quality and quantity of the dirt contained in the drainage water are different, the pressure, temperature and flow rate of the drainage water are different, and the time for entering the fixed drainage is not determined. The inlet water of the fixed row has intermittence, the pressure, the temperature and the flow fluctuation of the inlet water are large, the quality and the quantity fluctuation of the dirt contained in the inlet water are large, and the characteristic is the working condition characteristic of the fixed row.
The periodic blowdown flash tank is a container directly communicated with the atmosphere, after the incoming water enters the periodic discharge, the boiling point of the water is reduced due to pressure reduction, part of the water is converted into a gas state from a liquid state, the converted steam is mainly discharged to the atmosphere through a vent, and the residual water after flash evaporation is discharged through a waste water outlet.
The working condition of the periodic blowdown flash tank determines that in the blowdown of a boiler system and the subsequent flash evaporation and steam discharge processes, part of steam and carried moisture are discharged into the atmosphere, and because the ambient temperature is lower than the steam temperature, the steam releases heat and condenses into liquid water drops, and the water drops are white in the air, so that the phenomenon is called white pollution. The condensation of the steam releases heat to the environment, causing thermal pollution.
In recent years, in the aspect of reducing and eliminating 'white pollution', one method is to spray water in a fixed-discharge steam space, and the other method is to arrange a heat exchanger in a cylinder, so that the phenomenon of steam emptying is not thoroughly solved due to no effective interception and absorption.
The steam flashed out from the existing periodical blowdown flash vessel is either directly discharged into the atmosphere or partially absorbed, and a small amount of steam is always discharged into the atmosphere.
The structure of the common pollution discharge flash tank for directly discharging steam into atmosphere is characterized in that: the sewage enters an annular flow channel of the sewage flash tank tangentially, and steam and water are separated due to the action of centrifugal force. The upper end of the annular flow passage is closed, and the lower end of the annular flow passage is open. The separated water directly falls into the water space of the pollution discharge flash vessel, and the separated steam upwards passes through the steam space along the lower edge of the flow channel in a folding direction of 180 degrees and is discharged into the atmospheric environment through a steam outlet at the top end of the periodic pollution discharge flash vessel. The disadvantages are that the steam is directly discharged into the atmosphere to form white pollution; the ground around the periodic blowdown flash tank in the severe cold area is often frozen in winter.
Chinese patent No. CN 204460167U discloses a novel fixed-row flash tank exhaust steam recovery device for a boiler. The technology comprises a fixed-discharge steam exhaust pipe and a cooling water pipe which are communicated with a fixed-discharge flash tank, and also comprises a branch pipe and a water tank; the fixed-row steam exhaust pipe is connected with a fixed-row flash tank, and the fixed-row flash tank is connected with the water tank through a condensed water return pipe; the cooling water pipe is connected with the water tank; one end of the branch pipe is connected with the cooling water pipe, and the other end of the branch pipe is arranged in the fixed exhaust steam pipe; the end part of the branch pipe is provided with a nozzle, and the branch pipe is also provided with a control valve. The multi-way branch pipes are arranged in parallel up and down, the free ends of the branch pipes are arranged in the fixed-discharge steam exhaust pipe, and nozzles and control valves are respectively arranged on the branch pipes; the other end of each branch pipe is connected with a cooling water pipe in a centralized manner. The water spraying method is used for reducing the moisture carried in the exhausted steam, but the spraying and cooling needs violent mass and heat transfer and sufficient contact of the water vapor, so that the ideal state of not exhausting the steam completely cannot be achieved in practical use.
Chinese patent with publication number CN 107726291A discloses an environment-friendly periodical blowdown flash tank, it includes shell body (1) that the cover was established in proper order from the extroversion, draft tube (2) and evacuation section of thick bamboo (3), the upper end of evacuation section of thick bamboo (3) is located outside shell body (1), the lower extreme of evacuation section of thick bamboo (3) is located in the upper end of draft tube (2), draft tube (2) are located shell body (1), be equipped with on the lateral wall of shell body (1) sewage entry (4), the lower part of shell body (1) is equipped with sewage export (5), be equipped with baffling board (6) between shell body (1) and draft tube (2), baffling board (6) are located the top of sewage entry (4). The sewage discharged by the technology is directly discharged into the fixed drainage along the radius direction of the shell of the periodical sewage discharge flash tank; the separated steam is further separated by the baffle plate and then is discharged into the atmosphere after being deflected twice along the slits of the casing structure, but the technology has the defects that: 1) when the pressure of the sewage is higher (more than 0.2MPa absolute pressure), equipment vibration can be caused; 2) the steam is not completely intercepted, and the emptying phenomenon cannot be avoided.
Disclosure of Invention
The invention aims to provide a water spraying disc type periodical blowdown flash tank aiming at the defects of the prior art so as to achieve zero steam emission of the periodical blowdown flash tank, solve white pollution and ensure stable operation of equipment.
The invention provides a water spraying disc type periodical pollution discharge capacity expander which comprises a shell, wherein the shell is of a vertical cylindrical structure with two closed ends, the top of the shell is provided with a vent, the upper part of the shell is provided with a cooling water inlet, the bottom of the shell is provided with a drain outlet, the middle lower part of the shell is provided with a sewage discharge inlet, the lower part of the shell is provided with an inverted U-shaped discharge pipe, and a steam-water separation flow passage is arranged in the shell, and the water spraying disc type periodical pollution discharge capacity expander is characterized in that: the water spraying disc type periodic pollution discharge flash tank is characterized in that a water distribution disc, 1 or more circular water spraying discs and 1 or more annular water spraying discs are further arranged above a steam-water separation flow channel in the shell, the water distribution disc is arranged above the circular water spraying disc and the annular water spraying discs, the circular water spraying discs and the annular water spraying discs are arranged at intervals from top to bottom, the water distribution disc is a bottom imperforate disc with the same diameter as the shell, a circular hole groove is formed in the center of the water distribution disc, a cooling water inlet is communicated with a space above the water distribution disc through a cooling water inlet pipe, the diameters of the circular water spraying discs and the annular water spraying discs are the same as the inner diameter of the shell, a through flow part of the circular water spraying disc is arranged in the center of the disc, the center of the disc is recessed, a through flow part of the annular water spraying disc is annular, the center of the water spraying disc is raised, small holes I are formed in the through flow parts of the circular water spraying disc and the annular water spraying disc, and a chassis with the same diameter as the shell is horizontally arranged at the middle lower part in the shell, the middle position of the chassis is vertically provided with a cylindrical groove, the cylindrical groove vertically penetrates through the chassis, a circular space enclosed by the cylindrical groove below the chassis, the shell and the chassis is a steam-water separation flow channel, small holes II are distributed on the chassis in the cylindrical groove, a sewage inlet is communicated with the steam-water separation flow channel, and the inverted U-shaped discharge pipe is positioned below the sewage inlet.
The invention is further technically characterized in that: the distance h1 between the water outlet of the cooling water inlet pipe and the water distribution plate is 50-200 mm.
The invention is further technically characterized in that: the center of the water distribution plate is provided with a circular hole groove with the diameter of 50-500 mm, and the height h2 of the circular hole groove is 80-200 mm.
The invention is further technically characterized in that: and the apertures I of the small holes formed in the through-flow part of the circular water spraying disc and the through-flow part of the annular water spraying disc are 5-10 mm.
The invention is further technically characterized in that: the pore diameter of the small holes II distributed on the base plate in the cylindrical groove is 5-10 mm.
The invention is further technically characterized in that: the horizontal installation inclination of the circular water spraying disc and the horizontal installation inclination of the annular water spraying disc are both smaller than 0.5 degrees, and the height h3 of the circular water spraying disc and the height h3 of the annular water spraying disc are both 50-100 mm.
The invention is further technically characterized in that: the through flow part of the circular water spraying disc is arranged at the center of the disc, the center of the disc is concave, and the diameter phi 3 of the concave circle is 1/3-3/4 of the inner diameter of the shell.
The invention is further technically characterized in that: the through-flow part of the annular water spraying disc is annular, the center of the water spraying disc is raised, and the diameter phi 2 of the convex circle is smaller than 3/4 of the inner diameter of the shell.
The invention is further technically characterized in that: the height h4 of the cylindrical groove above the chassis is 40-150 mm, and the height h5 of the cylindrical groove below the chassis is less than 600 mm.
The invention is further technically characterized in that: the distance h6 between the highest point of the inverted U-shaped drain pipe and the lowest point of the cylindrical groove is 100-1000 mm, preferably 100-300 mm.
The invention is further technically characterized in that: the sewage inlet enters the steam-water separation flow passage along the tangential direction of the shell, the height position of the sewage inlet is limited by the height range of the cylindrical groove below the chassis, namely the lowest point of the sewage inlet is higher than the lowest point of the cylindrical groove below the chassis, and the highest point of the sewage inlet is lower than the chassis; the number of the sewage outlets can be one or more, and when the number of the sewage outlets is more than one, the sewage outlets are uniformly distributed along the circumference of the shell.
The invention is further technically characterized in that: the cross section area of the annular passage of the steam-water separation flow passage is 1-20 times of the sum of the total cross sections of the sewage inlet.
The invention is further technically characterized in that: the inverted U-shaped discharge pipe is composed of a vertically arranged straight pipe, a horizontally arranged straight pipe and an elbow pipe, the bottom end of the vertically arranged straight pipe of the inverted U-shaped discharge pipe is a water suction port, and the straight-line distance h7 from the water suction port of the inverted U-shaped discharge pipe to the lower end socket of the shell is 100-500 mm.
The invention is mainly used in the blowdown systems of various boilers, steam generators and the like.
Compared with the prior art, the invention has the advantages that: the invention makes the steam separated from the sewage and the water fully contact and absorb in the large space between the two layers of water spraying discs, the steam which is not absorbed is forcibly absorbed when passing through the water spraying discs, the steam can not smoothly escape from the holes on the water spraying discs within the recommended aperture of the water distribution plate and the steam flow rate range, and is forcibly passed through the hole plate and the water layer on the water spraying discs, and can be gradually absorbed when passing through the water space, and the phenomenon of steam leakage and discharge can not occur, thereby avoiding white pollution; meanwhile, sewage is tangentially introduced into the fixed row, so that equipment vibration caused by high-pressure water impact on the equipment is avoided.
The invention is described in further detail below with reference to the figures and the detailed description, without limiting the scope of the invention.
Drawings
Fig. 1 is a structural diagram of a water spraying disc type periodical pollution discharge flash tank.
Fig. 2 is a top view of fig. 1.
Fig. 3 is a sectional view taken along line a-a of fig. 1.
Fig. 4 is a sectional view taken along line B-B of fig. 1.
Fig. 5 is a cross-sectional view taken along line C-C of fig. 1.
Fig. 6 is a cross-sectional view taken along line D-D of fig. 1.
The reference symbols shown in the figures are:
1-shell, 2-steam-water separation flow channel, 3-water distribution disc, 4-vent, 5-sewage inlet, 6-inverted U-shaped discharge pipe, 7-drain port, 8-pressure gauge, 9-liquid level meter, 10-cooling water inlet, 11-round water spraying disc, 12-annular water spraying disc, 13-cylindrical groove, 14-base plate, 15-cooling water inlet pipe, 16-water suction port, 17-small hole I, 18-small hole II, 19-round hole groove and 20-space above water distribution disc.
As shown in fig. 1 to 6, a trickle disk type periodic blowdown flash tank comprises a casing 1, the casing 1 is a vertical cylindrical structure with two closed ends, a vent 4 is arranged at the top of the casing 1, a cooling water inlet 10 is arranged at the upper part of the casing 1, a clean placing opening 7 is arranged at the bottom, a blowdown water inlet 5 is arranged at the middle lower part of the casing 1, an inverted U-shaped discharge pipe 6 is arranged at the lower part of the casing 1, a steam-water separation flow passage 2 is arranged in the casing 1, water distribution disks 3, 1 or more (preferably 1 to 10, preferably 3 to 5) circular trickle disks 11, 1 or more annular trickle disks 12 (preferably 1 to 10, preferably 3 to 5) are further arranged above the steam-water separation flow passage 2 in the casing 1, the water distribution disks 3 are arranged above the circular trickle disks 11 and the annular trickle disks 12, the circular trickle disks 11 and the annular trickle disks 12 are arranged at intervals up and down, the water distribution disks 3 are bottom disks with the same diameter as the casing 1 without holes, the center of the water distribution plate 3 is provided with a circular hole groove 19, a cooling water inlet 10 is communicated with a space 20 above the water distribution plate through a cooling water inlet pipe 15, the diameters of the circular water spray plate 11 and the annular water spray plate 12 are the same as the inner diameter of the shell 1, the through flow part of the circular water spray plate 11 is arranged at the center of the disk, the center of the disk is concave, the through flow part of the annular water spray plate 12 is arranged at the outer circumference of the disk and is annular, the center of the annular water spray plate 12 is convex, the through flow part of the circular water spray plate 11 and the through flow part of the annular water spray plate 12 are provided with small holes I17, the middle lower part in the shell 1 is horizontally provided with a chassis 14 with the same diameter as the shell 1, the middle position of the chassis 14 is vertically provided with a cylindrical groove 13, the cylindrical groove 13 vertically penetrates through the chassis 14, the cylindrical groove 13 positioned below the chassis 14, the annular space surrounded by the shell 1 and the chassis 14 is a steam-water separation flow passage 2, and the small holes II 18 are distributed on the chassis 14 positioned in the cylindrical groove 13, the sewage inlet 5 is communicated with the steam-water separation flow passage 2, and the inverted U-shaped discharge pipe 6 is positioned below the sewage inlet 5.
The cooling water inlet 10 is communicated with a space 20 above the water distribution plate through a cooling water inlet pipe 15, and the distance h1 between the water outlet of the cooling water inlet pipe 15 and the water distribution plate is 50-200 mm.
The center of the water distribution plate 3 is provided with a circular hole groove 19 with the diameter of 50 mm-500 mm, and the height h2 of the circular hole groove 19 is usually 80-200 mm.
The aperture of the small hole I17 formed in the through flow part of the circular water spraying disc 11 and the through flow part of the annular water spraying disc 12 is 5-10 mm. The aperture of the small holes II 18 distributed on the base plate in the cylindrical groove 13 is 5-10 mm.
The horizontal installation inclination of the circular water spraying disc 11 and the annular water spraying disc 12 is less than 0.5 degrees. Generally, the height h3 of the circular water spraying disc 11 and the annular water spraying disc 12 is recommended to be 50-100 mm.
The through flow part of the circular water spraying disc 11 is arranged at the center of the disc, the center of the disc is concave, and the diameter phi 3 of the concave circle is 1/3-3/4 of the inner diameter of the shell.
The through-flow part of the annular water spraying disc 12 is annular on the circumference of the disc, the central part of the water spraying disc is convex, the convex part is a circle, and the diameter phi 2 of the convex circle is 3/4 smaller than the inner diameter of the shell.
The height h4 of the cylindrical groove above the base plate 14 is 40-150 mm, and the height h5 of the cylindrical groove below the base plate 14 is less than 600 mm.
The distance h6 between the highest point of the inverted U-shaped drain pipe 6 and the lowest point of the cylindrical groove 14 is 100-1000 mm, preferably 100-300 mm.
The sewage inlet 5 enters the steam-water separation flow passage 2 along the tangential direction of the shell 1, the height position of the sewage inlet 5 is limited by the height range of the cylindrical groove below the chassis 14, namely the lowest point of the sewage inlet 5 is higher than the lowest point of the cylindrical groove below the chassis 14, and the highest point is lower than the chassis 14.
The cross section area of the annular passage of the steam-water separation flow passage 2 is 1-20 times of the sum of the total cross sections of the sewage inlet 5.
The number of the sewage inlet 5 can be one or more, and when the number of the sewage inlet 5 is more than one, the sewage inlet is uniformly distributed along the circumference of the shell 1.
The inverted U-shaped discharge pipe 6 is composed of a vertically arranged straight pipe, a horizontally arranged straight pipe and an elbow pipe, and the linear distance h7 from the water suction port 16 of the inverted U-shaped discharge pipe 6 to the lower end socket of the shell 1 is 100-500 mm.
The through flow part of the circular water spraying disc 11 and the through flow part of the annular water spraying disc 12 are provided with small holes I17, the number of the small holes I is related to the flash evaporation steam quantity and the cold water taking quantity, and the speed of the steam flowing through the small holes I is usually less than 1.6 m/s.
The geometric figure of the upper surface of the steam-water separation flow passage 2 is an annular geometric figure, and the relation between the diameter of a central circle of the annular geometric figure and the diameter of a first water spraying disc above the annular geometric figure is as follows: 1) when the water spraying disc immediately above the steam-water separation flow channel 2 is the annular water spraying disc 12, phi 1 is less than or equal to phi 2+300 mm; 2) when the water spraying disc immediately above the steam-water separation flow channel 2 is the round water spraying disc 11, phi 1 is more than or equal to phi 3+100 mm and is less than the diameter of the shell.
The method for determining the number of the small holes II comprises the following steps: the steam quantity generated when sewage enters the device is taken as the through flow, and the calculation is carried out according to the steam flow speed of each small hole being 1-1.6 m/s.
The water introduced into the water tray 3 may be plant circulating water, fresh water, etc., and if flash steam and its heat are to be recovered, demineralized water, softened water may be used.
Still be equipped with manometer 8 and level gauge 9 in the casing 1, manometer 8 is located between casing 1's water tray 3 and catch water 2, and level gauge 9 is used for observing the liquid level on the water tray. The present invention does not specifically require such accessories.
The present invention allows for dual recovery of steam and heat with finer operational management. The basic principle is to let the steam be completely intercepted and absorbed. The invention leads the separated steam to firstly pass through the water layer and then pass through the one-stage or multi-stage water curtain in the sewage flash tank, and the zero emission of the steam is achieved through multiple times of sufficient contact absorption.
The simple operation process of the invention is as follows: sewage enters the steam-water separation flow channel 2 through the sewage inlet 5 along the tangential direction of the shell 1, steam-water separation is carried out in the annular flow channel of the steam-water separation flow channel 2, and all separated water directly falls into a water space below the shell 1 and enters the inverted U-shaped discharge pipe 6 through the water suction port 16 to be discharged; the steam separated from the steam-water separation flow passage 2 is folded upwards by 180 degrees along the lower edge of the cylindrical groove 13 of the steam-water separation flow passage 2, passes through a water layer upwards through a small hole II 18 on the base plate 14 for primary absorption, and then passes through a through-flow part of the annular water spraying disc 12 and a through-flow part of the circular water spraying disc 11 through a small hole I17 in sequence, and is completely absorbed step by step; cooling water enters a cooling water inlet pipe 15 through a cooling water inlet 10, enters a space 20 above a water distribution plate, overflows through a round hole groove 19, sequentially falls to a first water spraying plate, a second water spraying plate and the like, falls through small holes I17 on the two water spraying plates, finally falls onto a base plate 14, overflows to a small hole II 18 in the middle of a cylindrical groove 13, and falls to a water space for fixed drainage from the small hole II 18. The steam in the steam-water flow path can be absorbed only by the water through holes upwards.
The vent 4 on the shell 1 is used as a standby port for preventing the equipment from being used under overpressure during misoperation, the pressure gauge 8 and the liquid level gauge 9 are not required, and the emptying port 7 of the shell 1 is used for shutdown and overhaul.
FIG. 2 is a top view of FIG. 1 in accordance with the present invention; fig. 3 is a cross section a-a of fig. 1, mainly showing the structure of the water distribution plate 3; FIG. 4 is a cross-section B-B of FIG. 1, mainly illustrating the structure of a circular shower tray; FIG. 5 is a section C-C of FIG. 1, showing primarily the configuration of the annular drip tray; fig. 6 is a cross section D-D of fig. 1, mainly showing the structure of the upper surface of the steam-water separation flow path.
The invention does not make special requirements on the other accessories and meters in fig. 1-6.
The above description is only an embodiment of the present invention, and should not be taken as limiting the scope of the invention, and the replacement of equivalent elements or equivalent changes and modifications made according to the scope of the present invention should be included in the scope of the present invention.
Claims (13)
1. The utility model provides a trickle disk periodic blowdown flash tank, includes the casing, and the casing is both ends confined vertical cylindric structure, and the casing top sets up the drain, and casing upper portion sets up the cooling water import, and the bottom setting is put completely mouthful, and the lower part sets up the sewage import in the casing, and the casing lower part sets up the type of falling U delivery pipe, the inside catch water runner that sets up of casing, its characterized in that: the water spraying disc type periodic pollution discharge flash tank is characterized in that a water distribution disc, 1 or more circular water spraying discs and 1 or more annular water spraying discs are further arranged above a steam-water separation flow channel in the shell, the water distribution disc is arranged above the circular water spraying disc and the annular water spraying discs, the circular water spraying discs and the annular water spraying discs are arranged at intervals from top to bottom, the water distribution disc is a bottom imperforate disc with the same diameter as the shell, a circular hole groove is formed in the center of the water distribution disc, a cooling water inlet is communicated with a space above the water distribution disc through a cooling water inlet pipe, the diameters of the circular water spraying discs and the annular water spraying discs are the same as the inner diameter of the shell, a through flow part of the circular water spraying disc is arranged in the center of the disc, the center of the disc is recessed, a through flow part of the annular water spraying disc is annular, the center of the water spraying disc is raised, small holes I are formed in the through flow parts of the circular water spraying disc and the annular water spraying disc, and a chassis with the same diameter as the shell is horizontally arranged at the middle lower part in the shell, the middle position of the chassis is vertically provided with a cylindrical groove, the cylindrical groove vertically penetrates through the chassis, a circular space enclosed by the cylindrical groove below the chassis, the shell and the chassis is a steam-water separation flow channel, small holes II are distributed on the chassis in the cylindrical groove, a sewage inlet is communicated with the steam-water separation flow channel, and the inverted U-shaped discharge pipe is positioned below the sewage inlet.
2. The trickle disk type periodic blowdown flash tank of claim 1, wherein: the distance h1 between the water outlet of the cooling water inlet pipe and the water distribution plate is 50-200 mm.
3. The trickle disk type periodic blowdown flash tank of claim 1, wherein: the center of the water distribution plate is provided with a circular hole groove with the diameter of 50-500 mm, and the height h2 of the circular hole groove is 80-200 mm.
4. The trickle disk type periodic blowdown flash tank of claim 1, wherein: and the apertures I of the small holes formed in the through-flow part of the circular water spraying disc and the through-flow part of the annular water spraying disc are 5-10 mm.
5. The trickle disk type periodic blowdown flash tank of claim 1, wherein: the pore diameter of the small holes II distributed on the base plate in the cylindrical groove is 5-10 mm.
6. The trickle disk type periodic blowdown flash tank of claim 1, wherein: the horizontal installation inclination of the circular water spraying disc and the horizontal installation inclination of the annular water spraying disc are both smaller than 0.5 degrees, and the height h3 of the circular water spraying disc and the height h3 of the annular water spraying disc are both 50-100 mm.
7. The trickle disk type periodic blowdown flash tank of claim 1, wherein: the through flow part of the circular water spraying disc is arranged at the center of the disc, the center of the disc is concave, and the diameter phi 3 of a concave circle is 1/3-3/4 of the inner diameter of the shell; the through-flow part of the annular water spraying disc is annular, the center of the water spraying disc is raised, and the diameter phi 2 of the convex circle is smaller than 3/4 of the inner diameter of the shell.
8. The trickle disk type periodic blowdown flash tank of claim 1, wherein: the height h4 of the cylindrical groove above the chassis is 40-150 mm, and the height h5 of the cylindrical groove below the chassis is less than 600 mm.
9. The trickle disk type periodic blowdown flash tank of claim 1, wherein: the distance h6 between the highest point of the inverted U-shaped drain pipe and the lowest point of the cylindrical groove is 100-1000 mm.
10. The trickle disk type periodic blowdown flash tank of claim 1, wherein: the sewage inlet enters the steam-water separation flow channel along the tangential direction of the shell, the height position of the sewage inlet is limited by the height range of the cylindrical groove below the chassis, and the sewage inlets are one or more and are uniformly distributed along the circumference of the shell when a plurality of sewage inlets are arranged.
11. The trickle disk type periodic blowdown flash tank of claim 1, wherein: the cross section area of the annular passage of the steam-water separation flow passage is 1-20 times of the sum of the total cross sections of the sewage inlet.
12. The trickle disk type periodic blowdown flash tank of claim 1, wherein: the inverted U-shaped discharge pipe is composed of a vertically arranged straight pipe, a horizontally arranged straight pipe and an elbow pipe, the bottom end of the vertically arranged straight pipe of the inverted U-shaped discharge pipe is a water suction port, and the straight-line distance h7 from the water suction port of the inverted U-shaped discharge pipe to the lower end socket of the shell is 100-500 mm.
13. The trickle disk type periodic blowdown flash tank of claim 7, wherein: when the water spraying disc immediately above the steam-water separation flow channel is an annular water spraying disc, the diameter phi 1 of the cylindrical groove is less than or equal to phi 2+300 mm; when the water spraying disc immediately above the steam-water separation flow channel is a round water spraying disc, the diameter phi 1 of the cylindrical groove is more than or equal to phi 3+100 mm and is less than the diameter of the shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910170034.8A CN111664437B (en) | 2019-03-07 | 2019-03-07 | Trickle disk type periodical pollution discharge flash tank |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910170034.8A CN111664437B (en) | 2019-03-07 | 2019-03-07 | Trickle disk type periodical pollution discharge flash tank |
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| Publication Number | Publication Date |
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| CN111664437A CN111664437A (en) | 2020-09-15 |
| CN111664437B true CN111664437B (en) | 2021-10-08 |
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2019
- 2019-03-07 CN CN201910170034.8A patent/CN111664437B/en active Active
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| GB2368628A (en) * | 2000-11-07 | 2002-05-08 | Spirax Sarco Ltd | A blowdown vessel |
| JP3725862B2 (en) * | 2002-12-09 | 2005-12-14 | 新日本製鐵株式会社 | Boiler blow water treatment method for exhaust gas treatment system in waste melting treatment facility |
| CN202382598U (en) * | 2011-12-14 | 2012-08-15 | 张烨林 | Total heat type heat absorbing tower |
| CN202403256U (en) * | 2012-01-09 | 2012-08-29 | 成都丽雅纤维股份有限公司 | Periodic blowdown device |
| KR101697138B1 (en) * | 2016-01-25 | 2017-01-17 | 대영기계공업 주식회사 | Pre-blowing Soot Blower |
| CN106621415A (en) * | 2016-06-03 | 2017-05-10 | 华东理工大学 | Integrated column tray type flash evaporation-heat exchange apparatus |
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| CN111664437A (en) | 2020-09-15 |
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