CN2135720Y - Boiler water return device - Google Patents
Boiler water return device Download PDFInfo
- Publication number
- CN2135720Y CN2135720Y CN 92241570 CN92241570U CN2135720Y CN 2135720 Y CN2135720 Y CN 2135720Y CN 92241570 CN92241570 CN 92241570 CN 92241570 U CN92241570 U CN 92241570U CN 2135720 Y CN2135720 Y CN 2135720Y
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- water
- pump
- cavitation
- inlet pipe
- funnel
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Abstract
The utility model relates to the condensed water recovery device of a steam boiler, which comprises a box body, a water inlet pipe, a dirt removing device, an anti-vaporizing water slot, an automatic control device, a pressure regulating device, a water quality monitor, an anti-cavitation circular plate, a water discharge pipe forming an acoustic horn opening shape, an electric motor and a pressurizing centrifugal pump. The utility model excellently solves the difficult problem of the cavitation damage of the pressurizing centrifugal pump. The water recovery device can directly inject the condensed water with the high temperature of 90 to 100 DEG into the circulation of the boiler. Coal saving effect is obvious. Water recovery rate can be improved to 92%. The supply quantity of demineralized water is decreased. The service life of the boiler and the service life of the water pump are prolonged.
Description
The utility model belongs to a kind of condensed-water recovering device of steam boiler.
The inventor's No. 87210157, are called the patent of " coagulation hydroenergy backwater device ", and it provides a kind of water recovery apparatus that overcomes weak points such as the energy loss that existing recovery tank brings is big, floor space is big, management method is backward.It is that motor, high-pressure pump, header tank, water inlet pipe, drainpipe, water monitoring device, self-con-tained unit and regulator are consisted of one.The biggest problem of directly utilizing for the recovery of condensed water in high temperature is exactly a pressurizing cenrrifugal pump (high-pressure pump) when extracting hot water, can because of cavitation take place, and the lift of water pump is descended, can not be to the boiler normal water supply.In No. 87210157 patents, adopted to allow condensate water evenly enter liquid level, avoided the current streamline to produce tangible whirlpool, played certain anti-vaporization, but this can only be to reduce aeration and the vaporization of high-temperature water in the free-falling process by streamlined tank.When the temperature of backwater increases to 90 ℃, a large amount of steam bubbles appear in the pressurizing cenrrifugal pump porch, and the diameter of precipitation funnel and the degree of depth also obviously increase, and cause the aeration of current, air inlet also can influence lift, flow, efficient of pressurizing cenrrifugal pump etc., and this has just influenced the operate as normal of pressurizing cenrrifugal pump.
The purpose of this utility model is utilized the basic structure of " coagulation hydroenergy backwater device " exactly, has redesigned anti-cavitation structure, and its performance is further improved, and solves the cavitation problem in the condensed water in high temperature recycling, the service life of improving water pump and boiler.
The utility model is to adopt following scheme to reach goal of the invention.Boiler blow-down water device of the present utility model, it comprises motor, pressurizing cenrrifugal pump, casing, water inlet pipe, streamlined tank, water monitoring device, self-con-tained unit and regulator, the utility model is arranged to streamlined bell mouth shape drainpipe (being the oral siphon of pressurizing cenrrifugal pump) with the drainpipe of bottom half, and prevents the cavitation plectane with bracket supports one directly over drainpipe.
The utility model is damaged by hard material in order to prevent pressurizing cenrrifugal pump, the installation decontamination apparatus links to each other with water inlet pipe, this device is that the bottom is the funnel shaped tube that binds, funnel links to each other with blowoff valve by pipeline, the top that tube axially is divided into two is to use dividing plate, lower hopper place screen pack, and the end opening of funnel and water inlet pipe are every a side, the opposing party's top is provided with the delivery port of this device, and delivery port links to each other with anti-vaporization flow line style tank.
In order to make backwater equably in the inflow pump, anti-cavitation plectane of the present utility model can be made into circular plate with curved surface, and the peripheral curve of steel plate is recessed with water (flow) direction.
The utility model is considered again when pressurizing cenrrifugal pump inlet low-pressure area is walked around anti-cavitation plectane, for more effective anti-cavitation, the following tube end plate of regulator and the horn mouth oral siphon of pressurizing cenrrifugal pump is set has same vertical center line.
Because the utility model has solved a great problem of pressurizing cenrrifugal pump cavitation damage preferably, 90 ℃～100 ℃ condensed water in high temperature directly can be squeezed into the boiler circulation, the remarkable benefit of economizing on coal, the backwater rate can bring up to 92%, reduce increment, using water wisely and the water treatment expense of demineralized water.Decontamination apparatus of the present utility model has improved water quality, has prolonged the service life of pressurizing cenrrifugal pump and boiler.
Description of drawings of the present utility model is as follows:
Fig. 1 is the main cutaway view of boiler blow-down water device.
Fig. 2 is the front view of the decontamination apparatus of boiler blow-down water device.
Below in conjunction with accompanying drawing, the water recovery apparatus that all reclaims with 20 tons of steam boiler condensate water is embodiment, describes structure of the present utility model in detail.
This boiler blow-down water device comprises the casing (8) that has shock bracket (6), motor (7), pressurizing cenrrifugal pump (14), the water inlet pipe that communicates with boiler (1), the decontamination apparatus (2) that joins with water inlet pipe (1), the anti-vaporization flow line style tank (4) that links to each other with the delivery port (18) of decontamination apparatus (2), be arranged at the self-con-tained unit on the casing (8), water monitoring device (5), the corresponding regulator (9) that is provided with decontamination apparatus (2), the broadening formation drainpipe (12) of bottom half and anti-cavitation curve plectane (10).
The decontamination apparatus of present embodiment by
The top board of 680 * 8mm, the funnel that the steel plate of girth 1413 * 925 * 8mm and fan-shaped steel plate are welded into is formed.The water inlet pipe of decontamination apparatus is the water inlet pipe of whole water recovery apparatus (1) just, and the top of funnel (16) is used apart from shape dividing plate (19) and is divided into two parts, and the top of a part is water inlet pipe (1), and another part top sets out water pipe (18).Outlet pipe (18) links to each other with anti-vaporization flow line style tank (4), the bottom of dividing plate (19) joins by screen pack (20) and hopper side walls, with funnel end opening and water inlet pipe (1) envelope is a Room, and the funnel end opening links to each other with blowoff valve (3) by pipeline (17).Condensate water enters decontamination apparatus (2) by water inlet pipe (1), and because of the effect of dividing plate (19), condensate water can only be passed through funnel (16), rises to the top by screen pack (20) back current, flows to anti-vaporization flow line style tank (4) through delivery port (18).Because condensate water enters decontamination apparatus (2), the cross-section of river increases suddenly, flow velocity reduces, impurity drops in the scrubbing funnel (16) naturally in the water, operating personnel are by opening draining valve (3), with the rigid impurity of precipitation in the funnel (16) be attached to impurity discharging on the screen pack (20), because of greasy dirt proportion little, the greasy dirt that enters decontamination apparatus is accumulated in the top of the left side container (15) of decontamination apparatus naturally, when blowoff valve (3) is discharged when opening together.
The anti-cavitation structure of present embodiment is made up of the following tube end plate of anti-vaporization flow line style tank (4), anti-cavitation curved surface round plate (10), toroidal drainpipe (12), regulator (9).Anti-vaporization tank (4) designs according to streamlined practical curve, in order to reduce through the high-temperature water behind the decontamination apparatus aeration and vaporization in the free-falling process.The curved surface round plate (10) of anti-cavitation be positioned at drainpipe (12) directly over, the bell-mouthed sizableness of the diameter of round plate (10) and drainpipe (12), the interior positive camber of round plate (10) all forms to recessed trend at the periphery of plectane, round plate (10) supports with the pillar more than three (11), and near the bottom discharge pipe (12) of affixed casing (8).Pressurizing cenrrifugal pump (14) suction makes the water surface in the casing (8) the precipitation funnel occur, and upper gas (or gas) enters pump through this low-pressure area of funnel and makes pump generation cavitation.Simultaneously, the precipitation funnel is owing to gravitational influence produces centrifugal force, thus the diameter of increasing funnel, and cause pressure to reduce, pressure is low more, and high-temperature water vaporization situation is also serious more, and this vaporization phenomenon enters is enough to cavitation damage pressurizing cenrrifugal pump (14) in the pump.Circular plate with curved surface (10) is divided into upper and lower two parts with the precipitation funnel, the precipitation funnel complete obiteration on top, and water can only be in the even inflow pump of curved surface steel plate (10) periphery.The low pressure hopper zone has not existed, and aeration and vaporization phenomenon just can not occur yet, and makes the feed water inlet (13) of high-temperature water through pump, sends into boiler smoothly.The toroidal drainpipe (12) of present embodiment, it is the water inlet of pump (14), it is horn mouth structure according to the best fluidised form design of water conservancy, guarantee liquid flow section even transition from big to small, avoid high-temperature water that local sudden change takes place in motion process, cause the fluidised form disorder, the local decompression district occurs and vaporize.Present embodiment with the following tube end plate of regulator (9) with pump into the mouth of a river (12) and be arranged on the same vertical center line, when the pump intake low-pressure area was walked around anti-cavitation round plate (10), the following tube end plate of regulator (9) played the effect of anti-cavitation.
Claims (4)
1, a kind of coagulation hydroenergy backwater device of steam boiler, it comprises motor, pressurizing cenrrifugal pump, casing, water inlet pipe, streamlined tank, water monitoring device, self-con-tained unit and regulator, it is characterized in that bottom half is provided with streamlined bell mouth shape drainpipe (being the oral siphon of pressurizing cenrrifugal pump), and directly over drainpipe, prevent the cavitation plectane with bracket supports one.
2, water recovery apparatus according to claim 1, it is characterized in that: link to each other with water inlet pipe decontamination apparatus is installed, this device is that the bottom is the funnel shaped tube that binds, funnel (16) links to each other with blowoff valve (3) by pipeline (17), the top that tube axially is divided into two is with dividing plate (19), lower hopper place screen pack (20), the end opening of funnel (16) and water inlet pipe (1) are every a side, the opposing party's top is provided with the delivery port (18) of this device, and delivery port (18) links to each other with anti-vaporization flow line style tank (4).
3, water recovery apparatus according to claim 1 is characterized in that anti-cavitation plectane is circular plate with curved surface (10), and the peripheral curve of plate (10) is recessed with water (flow) direction.
4,, it is characterized in that the following tube end plate of regulator (9) and the horn mouth oral siphon (12) of pressurizing cenrrifugal pump (14) have same vertical center line according to claim 1 or 3 described water recovery apparatus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92241570 CN2135720Y (en) | 1992-11-21 | 1992-11-21 | Boiler water return device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92241570 CN2135720Y (en) | 1992-11-21 | 1992-11-21 | Boiler water return device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2135720Y true CN2135720Y (en) | 1993-06-09 |
Family
ID=33781615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92241570 Expired - Lifetime CN2135720Y (en) | 1992-11-21 | 1992-11-21 | Boiler water return device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2135720Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100381753C (en) * | 2004-12-27 | 2008-04-16 | 李树生 | Recovery apparatus of high temperature condensate |
| CN101363617B (en) * | 2008-10-09 | 2011-03-30 | 扬中市华能电力设备有限公司 | Closed type condensate water recovery device |
| CN103196508A (en) * | 2013-04-01 | 2013-07-10 | 烟台市计量所 | Steam pressure regulation buffer container |
-
1992
- 1992-11-21 CN CN 92241570 patent/CN2135720Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100381753C (en) * | 2004-12-27 | 2008-04-16 | 李树生 | Recovery apparatus of high temperature condensate |
| CN101363617B (en) * | 2008-10-09 | 2011-03-30 | 扬中市华能电力设备有限公司 | Closed type condensate water recovery device |
| CN103196508A (en) * | 2013-04-01 | 2013-07-10 | 烟台市计量所 | Steam pressure regulation buffer container |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
| RN01 | Renewal of patent term | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |