CN107289433B - Flash tank for generating dry saturated steam - Google Patents
Flash tank for generating dry saturated steam Download PDFInfo
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- CN107289433B CN107289433B CN201710598796.9A CN201710598796A CN107289433B CN 107289433 B CN107289433 B CN 107289433B CN 201710598796 A CN201710598796 A CN 201710598796A CN 107289433 B CN107289433 B CN 107289433B
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- annular
- baffle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B3/00—Other methods of steam generation; Steam boilers not provided for in other groups of this subclass
- F22B3/04—Other methods of steam generation; Steam boilers not provided for in other groups of this subclass by drop in pressure of high-pressure hot water within pressure- reducing chambers, e.g. in accumulators
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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
- F22B37/26—Steam-separating arrangements
- F22B37/30—Steam-separating arrangements using impingement against baffle separators
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
- Separating Particles In Gases By Inertia (AREA)
Abstract
The utility model discloses a flash tank for generating dry saturated steam, which comprises: the bottom sets up the vertical cylinder barrel that hot water export and top set up steam export, be equipped with annular fender liquid board in the barrel, annular fender liquid board with the wall fixed connection of barrel, and will the inside partition of barrel is in the dehumidification space of annular fender liquid board top and the vaporization space below annular fender liquid board, the barrel wall be in the part in vaporization space set up hot water import and with hot water import connected annular nozzle pipe, annular nozzle pipe is equipped with a plurality of jet orifices. According to the utility model, the annular liquid baffle is arranged in the middle of the cylinder body, the cylinder body is divided into the vaporization space and the dehumidification space, the lower part of the annular liquid baffle is the vaporization space, the upper part of the annular liquid baffle is the dehumidification space, the vaporization space can enable hot water to be high in strength sufficiently, and the dehumidification space can efficiently realize vapor-liquid separation to form dry saturated steam.
Description
Technical Field
The utility model relates to the related technical field of flash tanks, in particular to a flash tank for generating dry saturated steam.
Background
The flash evaporation principle is to make high-pressure high-temperature water in a low-pressure environment to reduce the boiling point, and when the water temperature is higher than the boiling point under the pressure, part of water is quickly boiled and vaporized in a flash evaporator to separate two phases. The flash tank is used for providing space for rapid vaporization and vapor-liquid separation of water, and the water boils in the flash tank, so that the vapor-liquid separation of water is realized. Conventional flash tanks typically have high temperature water entering through a water inlet in a tangential direction of the tank, vapor generated by the flash evaporation being discharged from the upper portion of the tank, and unvaporized water being discharged from the lower portion of the tank. This form of flash tank has a relatively low boiling vaporization capacity and requires a large tank. Meanwhile, the traditional flash tank has little requirement on the dryness of the discharged steam, such as the steam is used for hot water flash power generation, and the dryness of the steam generated by the traditional flash tank cannot meet the requirement of a power generation turbine.
Disclosure of Invention
Based on this, it is necessary to provide a flash tank for generating dry saturated steam, aiming at the technical problem that the steam dryness is poor in the prior art.
The present utility model provides a flash tank for producing dry saturated steam, comprising: the bottom sets up the vertical cylinder barrel that hot water export and top set up steam export, be equipped with annular fender liquid board in the barrel, annular fender liquid board with the wall fixed connection of barrel, and will the inside partition of barrel is in the dehumidification space of annular fender liquid board top and the vaporization space below annular fender liquid board, the barrel wall be in the part in vaporization space set up hot water import and with hot water import connected annular nozzle pipe, annular nozzle pipe is equipped with a plurality of jet orifices.
Further, the vaporizing space further comprises an annular water spraying disc arranged below the annular nozzle pipe, the annular water spraying disc is fixedly connected with the wall surface of the cylinder body, and a plurality of through holes are uniformly distributed on the surface of the annular water spraying disc.
Further, the dehumidifying space further comprises: the device comprises a gas-liquid separation primary structure and a dehumidifying device, wherein the dehumidifying device and the gas-liquid separation primary structure are sequentially arranged above the annular liquid baffle.
Still further, vapour-liquid separation primary structure includes circular steam baffle, annular steam baffle and steam baffle landing leg, annular steam baffle with the wall fixed connection of barrel, just annular steam baffle passes through the steam baffle landing leg in proper order with annular steam baffle the annular keeps off the liquid board and is connected.
Further, the dehumidifying device is a vapor-liquid separation filter screen.
Still further, a plurality of vapour-liquid separation filter screens ladder formula sets up in the wall of barrel.
Further, a short pipe facing the cylinder body is arranged on the opening in the middle of the annular liquid baffle.
Further, the total area of the injection holes is identical to the area of the hot water inlet.
Further, the direction of the injection hole is a cylinder wall surface surrounding the vaporization space.
Further, the expansion angle of the jet liquid column generated by the jet hole is 25-35 degrees.
According to the utility model, the annular liquid baffle is arranged in the middle of the cylinder body, the cylinder body is divided into the vaporization space and the dehumidification space, the lower part of the annular liquid baffle is the vaporization space, the upper part of the annular liquid baffle is the dehumidification space, the vaporization space can enable hot water to be high in strength sufficiently, and the dehumidification space can efficiently realize vapor-liquid separation to form dry saturated steam.
Drawings
Fig. 1 is a schematic diagram of a flash tank for producing dry saturated steam.
Detailed Description
The utility model will now be described in further detail with reference to the drawings and to specific examples.
A schematic of a flash tank for producing dry saturated steam is shown in fig. 1, comprising: the bottom sets up hot water export 1 and the top sets up vertical cylinder barrel 10 of steam outlet 2, be equipped with annular fender liquid board 4 in the barrel, annular fender liquid board 4 with barrel 10's wall fixed connection, and will barrel 10 inside is split into annular fender liquid board 4 top dehumidification space and be in the vaporization space of annular fender liquid board 4 below, barrel 10 wall is in the part in vaporization space sets up hot water import and with hot water import connected annular nozzle pipe 11, annular nozzle pipe 11 is equipped with a plurality of jet holes 12.
According to the utility model, the annular liquid baffle is arranged in the middle of the cylinder body, the cylinder body is divided into the vaporization space and the dehumidification space, the lower part of the annular liquid baffle is the vaporization space, the upper part of the annular liquid baffle is the dehumidification space, the vaporization space can enable hot water to be high in strength sufficiently, and the dehumidification space can efficiently realize vapor-liquid separation to form dry saturated steam.
In one embodiment, the vaporizing space further includes an annular water spraying disc 9 disposed below the annular nozzle pipe 11, the annular water spraying disc 9 is fixedly connected with the wall surface of the cylinder 10, and a plurality of through holes 91 are uniformly distributed on the surface of the annular water spraying disc 9.
The pressure hot water enters the annular nozzle pipe 11 through the hot water inlet 1 to spray out a tiny liquid column, and the tiny liquid column is partially atomized in the vaporization space due to pressure reduction and splashes everywhere after colliding with the lower part of the annular liquid baffle 4 and the wall surface of the cylinder body, so that a large number of small liquid drops are formed in the vaporization space, and the large liquid surface area is formed by a large number of dispersed small liquid drops, so that the hot water can be quickly and fully vaporized, and the evaporation intensity is large. The lower part of the annular nozzle pipe 11 is provided with an annular water spraying disc 9, after the liquid column sprayed out of the annular nozzle pipe touches the wall surface of the cylinder body, part of liquid forms a liquid film on the wall surface to flow downwards under the action of gravity, the liquid film is also formed on the wall surface and has larger liquid level evaporation surface area, the liquid film flows into the annular water spraying disc 9, a large number of through holes 91 are uniformly distributed in the annular water spraying disc 9, hot water flows to the lower part of the cylinder body through the small liquid column formed by the through holes 91 of the annular water spraying disc 9, the liquid surface area is greatly increased by the small liquid column, and the hot water is further fully vaporized.
In one embodiment, the dehumidifying space further includes: the device comprises a gas-liquid separation primary structure and a dehumidifying device, wherein the dehumidifying device and the gas-liquid separation primary structure are sequentially arranged above the annular liquid baffle 4.
The dehumidifying device is arranged above the vapor-liquid separation primary structure, the vapor-liquid separation primary structure enables larger liquid drops in saturated steam to adhere to the baffle plate and the wall surface of the cylinder body to flow back to the vaporizing space, and then the saturated steam after passing through the liquid separation primary structure enters the dehumidifying device for further dehumidification.
In one embodiment, the primary vapor-liquid separation structure comprises a circular vapor baffle 6, an annular vapor baffle 7 and vapor baffle support legs 5, wherein the annular vapor baffle 7 is fixedly connected with the wall surface of the cylinder 10, and the annular vapor baffle 7 is sequentially connected with the annular vapor baffle 7 and the annular liquid baffle 4 through the vapor baffle support legs 5.
The primary structure of vapor-liquid separation is composed of a circular vapor baffle 6, an annular vapor baffle 7 and vapor baffle supporting legs 5, and larger liquid drops in saturated vapor can flow back to the vaporization space through the labyrinth baffle B of the vapor.
In one embodiment, the dehumidifying device is a vapor-liquid separation screen 8.
Specifically, the vapor-liquid separation filter screen 8 is made of a stainless steel wire filter screen, the thickness is set to be 100-150 mm, a larger area filter screen can be arranged in a cylinder body with the same diameter, the vapor flow rate through the filter screen is controlled to be less than 3m/s, and the dryness of wet saturated vapor can reach more than 99.5% after passing through the stepped vapor-liquid separation filter screen.
In one embodiment, a plurality of vapor-liquid separation filter screens 8 are arranged on the wall surface of the cylinder 10 in a stepped manner.
In one embodiment, the opening in the middle of the annular baffle 4 is provided with a short tube 41 facing the cylinder 10.
In this embodiment, a short tube 41 is disposed in the opening in the middle of the annular liquid baffle 4 to further separate the vaporization space and the dehumidification space, reduce the splashed liquid drops from entering the dehumidification space, and separate part of the liquid drops carried by the vapor by the disturbance of the vapor flow.
In one embodiment, the total area of the injection holes 12 corresponds to the area of the hot water inlet.
In one embodiment, the direction a of the injection hole 12 is a wall surface of the cylinder 10 surrounding the vaporization space.
In one embodiment, the spray hole 12 produces a spray liquid column with a divergence angle of 25 ° to 35 °.
Preferably, the spray holes 12 produce a spray liquid column with a divergence angle of 30, and the number of rows of spray holes may be arranged in 1 to 3 rows as desired.
The foregoing examples illustrate only a few embodiments of the utility model and are described in detail herein without thereby limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.
Claims (8)
1. A flash tank for producing dry saturated steam, comprising: the vertical cylinder body is provided with a hot water outlet at the bottom and a steam outlet at the top, an annular liquid baffle is arranged in the cylinder body, the annular liquid baffle is fixedly connected with the wall surface of the cylinder body, the inside of the cylinder body is divided into a dehumidifying space above the annular liquid baffle and a vaporizing space below the annular liquid baffle, a hot water inlet and an annular nozzle pipe connected with the hot water inlet are arranged on the wall surface of the cylinder body at the part of the vaporizing space, and a plurality of spray holes are formed in the annular nozzle pipe;
the vaporizing space also comprises an annular water spraying disc arranged below the annular nozzle pipe, the annular water spraying disc is fixedly connected with the wall surface of the cylinder body, and a plurality of through holes are uniformly distributed on the surface of the annular water spraying disc;
still include in the dehumidification space: the device comprises a gas-liquid separation primary structure and a dehumidifying device, wherein the dehumidifying device and the gas-liquid separation primary structure are sequentially arranged above the annular liquid baffle.
2. The flash tank for generating dry saturated steam according to claim 1, wherein the vapor-liquid separation primary structure comprises a circular vapor baffle, an annular vapor baffle and vapor baffle legs, the annular vapor baffle is fixedly connected with the wall surface of the cylinder, and the annular vapor baffle is sequentially connected with the annular vapor baffle and the annular liquid baffle through the vapor baffle legs.
3. The flash tank for producing dry saturated steam of claim 1, wherein the dehumidifying device is a vapor-liquid separation screen.
4. A flash tank for producing dry saturated steam according to claim 3, wherein a plurality of said vapor-liquid separation screens are arranged stepwise on the wall surface of said cylinder.
5. The flash tank for generating dry saturated steam according to claim 1, wherein the opening in the middle of the annular baffle is provided with a short tube facing the cylinder.
6. The flash tank for generating dry saturated steam of claim 1, wherein the total area of the injection holes corresponds to the area of the hot water inlet.
7. The flash tank for generating dry saturated steam of claim 1, wherein the direction of the injection holes is a cylindrical wall surrounding the vaporization space.
8. The flash tank for generating dry saturated steam of claim 1, wherein the spray holes generate a spray liquid column having a divergence angle of 25 ° to 35 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710598796.9A CN107289433B (en) | 2017-07-21 | 2017-07-21 | Flash tank for generating dry saturated steam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710598796.9A CN107289433B (en) | 2017-07-21 | 2017-07-21 | Flash tank for generating dry saturated steam |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107289433A CN107289433A (en) | 2017-10-24 |
| CN107289433B true CN107289433B (en) | 2023-06-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710598796.9A Active CN107289433B (en) | 2017-07-21 | 2017-07-21 | Flash tank for generating dry saturated steam |
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| CN (1) | CN107289433B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107854858B (en) * | 2017-10-27 | 2020-04-17 | 中石化宁波工程有限公司 | Multi-stage flash tank |
| CN108720631B (en) * | 2018-08-30 | 2023-08-22 | 衡阳中盈环保科技发展有限公司中盈厨具设备厂 | Water-vapor separator for steaming cabinet |
| CN109915803B (en) * | 2019-01-25 | 2020-05-05 | 湖北和瑞能源科技股份有限公司 | Steam pipeline condensate water high-frequency secondary vaporization device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201632186U (en) * | 2010-04-16 | 2010-11-17 | 南通市康桥油脂有限公司 | Steam separating device |
| CN102537920A (en) * | 2012-03-01 | 2012-07-04 | 娄卡奔新能源科技发展(上海)有限公司 | Flash evaporator for improving waste steam utilization efficiency in cement industry |
| CN203560713U (en) * | 2013-11-25 | 2014-04-23 | 哈尔滨锅炉厂有限责任公司 | Inner water spraying tray of boiler starting drain flash tank |
| CN205182266U (en) * | 2015-11-06 | 2016-04-27 | 唐山中润煤化工有限公司 | Emergence vapour hits gas -liquid separation of phenomenon in preventing pipeline |
| CN207094594U (en) * | 2017-07-21 | 2018-03-13 | 广州恒足节能科技有限公司 | A kind of flash tank for producing dry saturated steam |
-
2017
- 2017-07-21 CN CN201710598796.9A patent/CN107289433B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201632186U (en) * | 2010-04-16 | 2010-11-17 | 南通市康桥油脂有限公司 | Steam separating device |
| CN102537920A (en) * | 2012-03-01 | 2012-07-04 | 娄卡奔新能源科技发展(上海)有限公司 | Flash evaporator for improving waste steam utilization efficiency in cement industry |
| CN203560713U (en) * | 2013-11-25 | 2014-04-23 | 哈尔滨锅炉厂有限责任公司 | Inner water spraying tray of boiler starting drain flash tank |
| CN205182266U (en) * | 2015-11-06 | 2016-04-27 | 唐山中润煤化工有限公司 | Emergence vapour hits gas -liquid separation of phenomenon in preventing pipeline |
| CN207094594U (en) * | 2017-07-21 | 2018-03-13 | 广州恒足节能科技有限公司 | A kind of flash tank for producing dry saturated steam |
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| CN107289433A (en) | 2017-10-24 |
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