CN112344319B - Orifice plate type deaerator exhaust steam recovery equipment - Google Patents
Orifice plate type deaerator exhaust steam recovery equipment Download PDFInfo
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- CN112344319B CN112344319B CN201910732390.4A CN201910732390A CN112344319B CN 112344319 B CN112344319 B CN 112344319B CN 201910732390 A CN201910732390 A CN 201910732390A CN 112344319 B CN112344319 B CN 112344319B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D11/00—Feed-water supply not provided for in other main groups
- F22D11/02—Arrangements of feed-water pumps
- F22D11/06—Arrangements of feed-water pumps for returning condensate to boiler
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
- F22D1/50—Feed-water heaters, i.e. economisers or like preheaters incorporating thermal de-aeration of feed-water
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- General Engineering & Computer Science (AREA)
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- Separating Particles In Gases By Inertia (AREA)
Abstract
The invention discloses exhaust steam recovery equipment of a pore plate type deaerator, which aims to overcome the defects that the structure is complex, and discharged steam cannot be completely eradicated in the prior art. The steam exhaust pipeline comprises a shell, a water seal groove is arranged at the upper part in the shell, an inverted U-shaped pipeline is arranged at the lower part, 1 layer to 10 layers of pore plates are horizontally arranged between the water seal groove and the inverted U-shaped pipeline from top to bottom, small holes are formed in the pore plates, the middle part of the shell is vertically provided with a steam exhaust pipeline, the steam exhaust pipeline penetrates through the pore plates at all layers, a steam exhaust inlet is formed in the top of the shell, the steam exhaust inlet is communicated with the steam exhaust pipeline, a water inlet and an emptying pipe are arranged on the water seal groove, an emptying port is formed in the upper part of the shell, the emptying port is communicated with the emptying pipe, and an emptying port is formed in the bottom of the shell.
Description
Technical Field
The invention belongs to the technical field of deaerator exhaust steam recovery, and particularly relates to a pore plate type deaerator exhaust steam recovery device which is applicable to auxiliary equipment of a thermal deaerator in thermal systems of various industries.
Background
Because of the process requirement, the thermal deaerator discharges the dissolved oxygen in the water and also discharges part of steam, and therefore the steam discharged by the deaerator is a source of steam-water loss in a thermal system. Meanwhile, the steam discharged by the deaerator is accompanied with certain noise; the dispersion of the steam in the atmosphere causes poor surrounding working conditions.
Chinese patent No. CN206073746U discloses a deaerator exhaust steam recovery device, which comprises a shell, a plurality of serpentine coils, a water inlet pipeline and a water outlet pipeline; one end in the shell is provided with a water inlet pipeline, and the other end in the shell is provided with a water outlet pipeline; be provided with a plurality of coiled coil between inlet channel and the outlet conduit, the inlet channel is connected with every coiled coil's one end, and the outlet conduit is connected with every coiled coil's the other end, and the device receives the ability through coiled coil, has realized retrieving the reutilization to the oxygen-eliminating device exhaust steam, but the structure is more complicated, therefore the cost is high. Chinese patent No. CN208332242U discloses a waste steam recovery device for a deaerator of a thermal power plant, which includes a deaerator, a condensate pipe and a waste steam evacuation pipe, wherein the deaerator is provided with the condensate pipe, an evacuation steam outlet end of the waste steam evacuation pipe is connected to a surface heat exchanger, the condensate pipe is provided with a first heat exchange pipe, the other end of the first heat exchange pipe is connected to a water inlet of the surface heat exchanger, a water outlet of the surface heat exchanger is provided with a second heat exchange pipe, and the other end of the second heat exchange pipe is communicated with the condensate pipe.
Disclosure of Invention
The invention aims to provide exhaust steam recovery equipment of a pore plate type deaerator, which aims to overcome the defects that the structure is complex, and discharged steam cannot be completely eradicated in the prior art. The basic process is that the dead steam of the deaerator is introduced into a closed container to be fully contacted with water and absorbed by the water, and then the final product water of heat exchange is recovered.
The invention provides exhaust steam recovery equipment of a pore plate type deaerator, which comprises a shell and is characterized in that: the pore plate type deaerator exhaust steam recovery device further comprises a water seal groove, an inverted U-shaped pipeline, pore plates and an exhaust steam pipeline, the water seal groove is formed in the upper portion in the shell, the inverted U-shaped pipeline is arranged on the lower portion, from top to bottom between the water seal groove and the inverted U-shaped pipeline, 1 layer to 10 layers of pore plates are horizontally arranged, small holes are formed in the pore plates, the exhaust steam pipeline is vertically arranged in the middle of the shell and penetrates through the pore plates in all layers, an exhaust steam inlet is formed in the top of the shell and is communicated with the exhaust steam pipeline, a water inlet and an emptying pipe are formed in the water seal groove, an emptying port is formed in the upper portion of the shell, the emptying port is communicated with the emptying pipe, and an emptying port is formed in the bottom of the shell.
The invention relates to exhaust steam recovery equipment of a pore plate type deaerator, which is further technically characterized in that: the effective water seal height of the water seal groove is 50-500 mm.
The invention relates to exhaust steam recovery equipment of a pore plate type deaerator, which is further technically characterized in that: the water seal tank can be independently arranged and can also be arranged around the exhaust steam pipeline.
The invention relates to exhaust steam recovery equipment of a pore plate type deaerator, which is further technically characterized in that: the diameter of the small hole on the pore plate is phi 5-20 mm.
The invention relates to exhaust steam recovery equipment of a pore plate type deaerator, which is further technically characterized in that: the orifice plate type deaerator dead steam recovery plant further comprises an anti-impact cover, and when the flow rate of steam in the dead steam pipeline is larger than 10m/s, the anti-impact cover is arranged at an exhaust port at the bottom of the dead steam pipeline.
The invention relates to exhaust steam recovery equipment of a pore plate type deaerator, which is further technically characterized in that: the inverted U-shaped pipeline comprises a vertical pipeline and a horizontal pipeline, the vertical pipeline is positioned in the center of the shell, an inverted U-shaped pipe water suction port is arranged at the bottom of the vertical pipeline, and the distance between the inverted U-shaped pipe water suction port and the lowest point of the shell is generally 50-500 mm, preferably 200-300 mm; the distance between the highest point of the horizontal pipeline of the inverted U-shaped pipeline and the end opening of the steam exhaust pipe is generally less than 1000mm, preferably 200-300 mm; the effective height of the vertical pipeline of the inverted U-shaped pipeline is generally less than 1000mm, and preferably 300 mm-400 mm.
According to the exhaust steam recovery equipment of the orifice plate type deaerator, the equipment is preferably made of stainless steel.
The invention is suitable for auxiliary equipment of the thermal deaerator in thermal systems in various industries.
Compared with the prior art, the invention has the advantages that: the orifice plate type deaerator exhaust steam recovery device has the advantages that the device structure is simpler than that of the prior art due to the adoption of a steam-water mixing mode, the size is small (the diameter of a cylinder body can meet the requirement when being 400-600 mm), the orifice plate type deaerator exhaust steam recovery device is used as an auxiliary device of the deaerator instead of an independent device, and the orifice plate type deaerator exhaust steam recovery device is connected with the deaerator in a water sealing mode, so that the investment and the occupied land are remarkably reduced, and the water consumption is saved.
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 vertical sectional view of an exhaust steam recovery device of a pore plate type deaerator.
Fig. 2 is a top view of fig. 1.
Fig. 3 isbase:Sub>A sectional view taken along linebase:Sub>A-base:Sub>A of fig. 1.
Fig. 4 is a sectional view taken along line B-B of fig. 1.
Figure 5 is a front and top view of the impingement cover.
The reference symbols shown in the figures are:
1-a shell; 2-a dead steam inlet; 3-evacuation;
4-an emptying pipe; 5-a water inlet; 6-water sealing the tank;
7-orifice plate; 8-anti-impact cover; 9-a water suction port of an inverted U-shaped pipe;
10-discharging the mouth; 11-an inverted U-shaped duct; 12-small holes;
13-dead steam pipeline.
Detailed Description
As shown in fig. 1, the exhaust steam recovery device of the orifice plate type deaerator of the present invention comprises a casing 1, wherein the casing 1 shown in fig. 1 is vertically arranged in a cylindrical shape, and the main components inside the casing 1 are an orifice plate 7, an exhaust steam pipeline 13, an inverted U-shaped pipeline 11 and a water seal tank 6 (the water seal tank 6 can be independently arranged or arranged around the exhaust steam pipeline 13, and the water seal tank is arranged around the exhaust steam pipeline 13 in fig. 1). The upper portion sets up water seal tank 6 in the casing 1, the lower part sets up the type of falling U pipeline 11, from the top down level sets up 1 layer to 10 layers of orifice plates 7 between water seal tank 6 and the type of falling U pipeline 11, it has aperture 12 to open on the orifice plate 7, vertical exhaust steam pipeline 13 that sets up in the middle of the casing 1, exhaust steam pipeline 13 passes each layer orifice plate 7 and water seal tank 6, casing 1 top sets up exhaust steam inlet 2, exhaust steam inlet 2 and exhaust steam pipeline 13 intercommunication, be provided with water inlet 5 and blow-down pipe 4 on the water seal tank 6, casing 1 upper portion is provided with evacuation mouth 3, evacuation mouth 3 intercommunication blow-down pipe 4, set up and place clean mouth 10 bottom the casing 1.
In the actual manufacturing process, the pore plates 7 are generally arranged in 2-3 layers, the distance between every two pore plates 7 meets the manufacturing requirement, the pore plates 7 are horizontally arranged, the aperture of an opening on each pore plate 7 is generally phi 5-20 mm, the optimal flow rate of exhaust steam flowing through the small holes 12 is 1-1.6 m/s, the number of the holes of the small holes 12 can be obtained according to the exhaust steam quantity and the flow rate, and the horizontal arrangement inclination of the pore plates 7 is less than 0.5 degrees; the caliber of the exhaust steam inlet 2 is suggested to be 1-2 stages (referring to a pipeline diameter series divided in a common pipeline diameter series) larger than that of a steam exhaust pipeline of a deaerator, the caliber of the exhaust steam inlet 2 is the same as that of the exhaust steam pipeline 13, an exhaust port of the exhaust steam pipeline 13 is led below the lowest layer of pore plate 7, if the steam flow rate in the exhaust steam pipeline is larger than 10m/s, an anti-impact cover 8 is usually arranged at the exhaust port at the bottom of the exhaust steam pipeline 13, the steam is prevented from impacting a water surface to bring water splash, and the anti-impact cover 8 does not meet the requirement.
The water seal groove 6 and the emptying pipe 4 form a water seal, the water seal groove can be independently arranged or can be arranged around an exhaust steam pipeline 13, the water seal groove 6 shown in figure 1 is arranged around the exhaust steam pipeline 13, so that exhaust steam can be cooled by water in the groove, the effective water seal height h1 of the water seal groove 6 is 50-500 mm, the effects of sealing residual steam and maintaining the pressure of the steam side of equipment to be micro positive pressure can be met, and cooling water enters the water seal groove 6 through the water inlet 5; the inverted U-shaped pipeline 11 comprises a vertical pipeline and a horizontal pipeline, the vertical pipeline is positioned in the center of the shell, an inverted U-shaped water suction port 9 is arranged at the bottom of the vertical pipeline, the distance h2 from the inverted U-shaped water suction port 9 to the bottom of the shell 1 is generally 50-500 mm, and the engineering requirement can be met, preferably 200-300 mm; the distance H between the highest point of the horizontal part of the inverted U-shaped pipeline 11 and the lower port of the exhaust steam pipe 13 is less than 1000mm, preferably 200-300 mm, so that the requirement can be met, and the effective height of the vertical pipeline of the inverted U-shaped pipeline 11 in the shell 1 is less than 1000mm, preferably 300-400 mm. The emptying port 10 is used for emptying the residual liquid in the pipe during maintenance, and the emptying port 3 is used for maintaining the shell 1 to be communicated with the atmosphere. The arrangement of the small holes 12 formed in the perforated plate 7 is not required, and if the interior of the device adopts a form shown in the figure, the arrangement of the small holes 7 along the periphery of the steam exhaust pipeline 13 is recommended.
The simple operation process of the deaerator dead steam recovery equipment is as follows: cooling water enters the water seal tank 6 through the water inlet 5, the water seal tank 6 overflows after being filled with water, the overflowing water sequentially penetrates through the pore plates 7 from top to bottom to enter the lower part of the shell 1, and the steam is cooled through sufficient heat exchange with the steam in the whole downward running process of the water and finally flows out of the device through the inverted U-shaped pipeline 11. The working process of the dead steam of the deaerator comprises the following steps: the exhaust steam enters the lower layer of the device from an exhaust steam inlet 2 through an exhaust steam pipeline 13 and is discharged, and the exhaust steam is folded by 180 degrees and upwards passes through the pore plates 7 of each layer through the small holes 12, so that the steam and water complete the exchange of working media and heat on the pore plates 7, and the steam is completely absorbed. Finally, a water curtain formed by the overflow of the water seal groove 6 in the figure 1 and a water seal formed by the emptying pipe 4 and the water seal groove 6 form a last two barriers for preventing steam from escaping.
The cooling water is recommended to be desalted water, so that the heat of the dead steam of the deaerator and the condensed dead steam are all recovered; and then the equipment and the water tank of the deaerator are jointly arranged in a water seal mode, and cooling water adopts water seal water, so that all heat and water of the deaerator are completely recovered.
Because the equipment works in an oxygen-enriched, high-temperature and humid environment, the equipment is made of stainless steel to prevent oxygen corrosion.
Other equipment accessories required by the structure of equipment manufacturing, overhauling and the like are not shown in the figure and are not required. But this does not affect the scope of the claims of the invention.
The above description is only exemplary of the invention and should not be taken as limiting the scope of the invention, and all equivalent arrangements, substitutions and modifications of the invention or equivalent variations and modifications within the scope of the invention are intended to be covered by the present patent. In addition, the technical features, the technical schemes and the technical schemes can be freely combined and used.
Claims (8)
1. The utility model provides a pore plate formula oxygen-eliminating device exhaust steam recovery plant, includes the casing, its characterized in that: the shell is vertically arranged cylindrical, the orifice plate type deaerator dead steam recovery device further comprises a water seal groove, an inverted U-shaped pipeline, an orifice plate and a dead steam pipeline, the water seal groove is arranged at the upper portion in the shell, the inverted U-shaped pipeline is arranged at the lower portion in the shell, 1 layer of orifice plate to 10 layers of orifice plates are arranged between the water seal groove and the inverted U-shaped pipeline from top to bottom, small holes are formed in the orifice plates, the middle of the shell is vertically provided with the dead steam pipeline, the dead steam pipeline penetrates through the orifice plates of the layers, the top of the shell is provided with a dead steam inlet, the dead steam inlet is communicated with the dead steam pipeline, a water inlet and an emptying pipe are arranged on the water seal groove, an emptying port is arranged at the upper portion of the shell and communicated with the emptying pipe, an emptying port is formed in the bottom of the shell, the caliber of the dead steam inlet is identical to that of the dead steam pipeline, an exhaust port of the dead steam pipeline is introduced into the lower portion of the orifice plate of the lowest layer, and the effective water seal height of the water seal groove is equal to that of the water seal50-500 mm, the diameter of the small hole on the pore plate is
2. The exhaust steam recovery device of the orifice plate type deaerator as claimed in claim 1, wherein: the water seal tank is independently arranged or arranged around the exhaust steam pipeline.
3. The exhaust steam recovery device of the orifice plate type deaerator as claimed in claim 1, wherein: the orifice plate type deaerator dead steam recovery plant further comprises an anti-impact cover, and when the flow rate of steam in the dead steam pipeline is larger than 10m/s, the anti-impact cover is arranged at an exhaust port at the bottom of the dead steam pipeline.
4. The perforated plate type deaerator dead steam recovery device of claim 1, characterized in that: the inverted U-shaped pipeline comprises a vertical pipeline and a horizontal pipeline, the vertical pipeline is positioned in the center of the shell, an inverted U-shaped pipe water suction port is arranged at the bottom of the vertical pipeline, and the distance between the inverted U-shaped pipe water suction port and the lowest point of the shell is 50-500 mm.
5. The exhaust steam recovery device of the orifice plate type deaerator as claimed in claim 4, wherein: the distance between the water suction port of the inverted U-shaped pipe and the lowest point of the shell is 200-300 mm.
6. The exhaust steam recovery device of the orifice plate type deaerator as claimed in claim 4, wherein: the distance between the highest point of the horizontal pipeline of the inverted U-shaped pipeline and the end opening of the steam exhaust pipe is less than 1000mm.
7. The perforated plate type deaerator dead steam recovery device of claim 6, characterized in that: the distance between the highest point of the horizontal pipeline of the inverted U-shaped pipeline and the end opening of the steam exhaust pipe is 200-300 mm.
8. The exhaust steam recovery device of the orifice plate type deaerator as claimed in claim 4, wherein: the height of the vertical pipeline of the inverted U-shaped pipeline is 300-400 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910732390.4A CN112344319B (en) | 2019-08-09 | 2019-08-09 | Orifice plate type deaerator exhaust steam recovery equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910732390.4A CN112344319B (en) | 2019-08-09 | 2019-08-09 | Orifice plate type deaerator exhaust steam recovery equipment |
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| CN112344319A CN112344319A (en) | 2021-02-09 |
| CN112344319B true CN112344319B (en) | 2022-10-14 |
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| CN201910732390.4A Active CN112344319B (en) | 2019-08-09 | 2019-08-09 | Orifice plate type deaerator exhaust steam recovery equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB541093A (en) * | 1940-04-11 | 1941-11-14 | Brush Electrical Eng | New or improved means for purifying and/or cleansing gases |
| CN2721214Y (en) * | 2004-09-02 | 2005-08-31 | 中国电子科技集团公司第二十四研究所 | Water absorbing waste gas treater |
| CN201472633U (en) * | 2009-09-15 | 2010-05-19 | 王德荣 | Marine inert gas system |
| CN201672821U (en) * | 2010-05-14 | 2010-12-15 | 王世英 | Exhaust steam recovery device |
| CN102671510B (en) * | 2011-11-29 | 2015-08-12 | 中国石油化工股份有限公司 | The recovery process of flue gas CO2 |
| US9850142B2 (en) * | 2013-03-13 | 2017-12-26 | Tianhua Institute Of Chemical Machinery And Automation Co., Ltd. | Method and device for recycling and purifying water vapor from coal drying process |
| CN204356140U (en) * | 2014-12-02 | 2015-05-27 | 光大环保技术研究院（深圳）有限公司 | A kind of anaerobic biological reactor |
| CN205877288U (en) * | 2016-07-15 | 2017-01-11 | 洛阳德正废弃资源再利用有限公司 | Waste oil of keeping apart can be realized and preceding water seal arrangement of alembic is retrieved |
| CN207990590U (en) * | 2018-03-06 | 2018-10-19 | 西安西热锅炉环保工程有限公司 | Steam exhaust pressure adjustable water seal arrangement is arranged surely by a kind of thermal power plant |
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