CN114922792A - Cavitation-proof device for boiler water-feeding pump - Google Patents
Cavitation-proof device for boiler water-feeding pump Download PDFInfo
- Publication number
- CN114922792A CN114922792A CN202210421984.5A CN202210421984A CN114922792A CN 114922792 A CN114922792 A CN 114922792A CN 202210421984 A CN202210421984 A CN 202210421984A CN 114922792 A CN114922792 A CN 114922792A
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- water
- pipe
- communicated
- pump
- storage tank
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 184
- 238000001914 filtration Methods 0.000 claims abstract description 18
- 239000010865 sewage Substances 0.000 claims description 18
- 238000009434 installation Methods 0.000 claims description 15
- 238000002347 injection Methods 0.000 claims description 10
- 239000007924 injection Substances 0.000 claims description 10
- 230000002265 prevention Effects 0.000 claims description 6
- 238000003466 welding Methods 0.000 claims description 4
- 239000000945 filler Substances 0.000 claims 2
- 239000012535 impurity Substances 0.000 abstract description 10
- 238000000034 method Methods 0.000 abstract description 5
- 239000007788 liquid Substances 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 238000005457 optimization Methods 0.000 description 5
- 238000001514 detection method Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B11/00—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation
- F04B11/0008—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation using accumulators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/10—Other safety measures
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/20—Filtering
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
The invention discloses a boiler feed pump cavitation-resistant device which comprises a water storage tank, wherein the left side of the bottom of the water storage tank is communicated with a filtering mechanism, the bottom of the filtering mechanism is communicated with a connecting pipe, the bottom of the connecting pipe is communicated with a flow meter, the bottom of the flow meter is communicated with a bent pipe, the left end of the bent pipe is communicated with a water inlet pipe, the left end of the water inlet pipe is communicated with a feed pump, the water outlet end of the feed pump is communicated with a water outlet pipe, the right side of the water outlet pipe is communicated with a pressure pipe, and the front of the pressure pipe is communicated with a high-pressure nozzle. The invention has the advantage of good anti-cavitation effect, and solves the problem of cavitation caused by the increase of air inflow of the feed pump due to the instability of feed liquid of the feed pump and impurities in water in the process of feeding water into the boiler by using the feed pump.
Description
Technical Field
The invention relates to the technical field of boiler water supply, in particular to a cavitation-resistant device for a boiler water supply pump.
Background
The boiler is an energy conversion device, energy input to the boiler comprises chemical energy and electric energy in fuel, the boiler outputs steam, high-temperature water or an organic heat carrier with certain heat energy, boiler feed water refers to water conveyed to the boiler from a deaerator through a feed water pump, the feed water pump is required in the process of boiler feed water, cavitation is easy to occur in the process of feed water by the feed water pump, water pump cavitation refers to the process of hydraulic performance deterioration and overflowing part damage caused by the fact that bubbles in a low-pressure area in a water pump overflowing system reach a high-pressure area along with water flow and are compressed and rapidly collapsed, and cavitation causes water pump performance deterioration, unstable device operation, metal surface material fatigue degradation, noise, vibration intensification and other adverse effects.
Disclosure of Invention
The invention aims to provide a boiler feed pump anti-cavitation device which has the advantage of good anti-cavitation effect and solves the problem that cavitation phenomenon is caused by the fact that the air inflow of a feed pump is increased due to unstable feed liquid of the feed pump and impurities in water in the process of feeding water into a boiler by using the feed pump.
In order to achieve the purpose, the invention provides the following technical scheme: an anti-cavitation device for a boiler feed pump comprises a water storage tank, wherein the left side of the bottom of the water storage tank is communicated with a filtering mechanism, the bottom of the filtering mechanism is communicated with a connecting pipe, the bottom of the connecting pipe is communicated with a flowmeter, the bottom of the flowmeter is communicated with a bent pipe, the left end of the bent pipe is communicated with a water inlet pipe, the left end of the water inlet pipe is communicated with a water feeding pump, the water outlet end of the water feeding pump is communicated with a water outlet pipe, the right side of the water outlet pipe is communicated with a pressurizing pipe, the front of the pressure pipe is communicated with a high-pressure nozzle, the front of the high-pressure nozzle is communicated with the rear side of the water inlet pipe, the filtering mechanism comprises a shell, the inner wall of the shell is fixedly connected with a filtering plate, the front surface of the shell is communicated with an electromagnetic valve, the water storage tank comprises a tank body, the outer surface of the tank body is communicated with a water injection pipe, and one end, far away from the tank body, of the water injection pipe is communicated with an installation pipe.
In order to facilitate the control of the electromagnetic valve, the preferred preference of the anti-cavitation device of the boiler feed pump is that the controller is fixedly installed at the bottom of the front face of the water storage tank through a bolt, and the display screen and the control key are respectively and fixedly installed on the front face of the controller.
In order to support and fix the water storage tank, the preferable anti-cavitation device for the boiler feed pump is that the bottom of the water storage tank is welded with an installation column, and the bottom of the installation column is welded with an installation seat.
In order to facilitate the installation of the water feed pump, the preferred anti-cavitation device for the boiler water feed pump is that the bottom of the water feed pump is fixedly connected with a base through bolts, and the top of the water outlet pipe is welded with a water outlet flange.
In order to facilitate the discharge of sewage in the shell, the preferred anti-cavitation device for the boiler feed pump is that the front side of the electromagnetic valve is communicated with a sewage discharge pipe, and the front side of the sewage discharge pipe is welded with a sewage discharge flange.
In order to facilitate the addition of water into the installation pipe, the preferred anti-cavitation device for the boiler feed pump is that the right side of the installation pipe is communicated with a water adding pipe, and the right end of the water adding pipe is welded with a water inlet flange.
Compared with the prior art, the invention has the following beneficial effects:
the water storage tank, the controller, the connecting pipe, the flowmeter, the bent pipe, the water inlet pipe, the pressurizing pipe, the water feeding pump, the water outlet pipe, the filtering mechanism and the high-pressure nozzle are matched for use, so that the liquid inlet stability of the water feeding pump is improved, impurities in water entering the water feeding pump are filtered, and the cavitation phenomenon is reduced or avoided; meanwhile, the water inlet low-pressure area of the water pump is pressurized, so that bubbles in water are reduced; through setting up the water storage box, can be convenient for increase the feed liquor stability of feed pump, reduce the air input of feed pump, through setting up filtering mechanism, can be convenient for filter the impurity of aquatic, reduce the emergence of cavitation phenomenon, through setting up the flowmeter, can be convenient for detect the inflow to the feed pump, clear up the impurity of filtering mechanism inside when the inflow is low, through setting up the erection column, can be convenient for install fixedly to the water storage box, cooperation through forcing pipe and high pressure nozzle is used, the inside water under high pressure of outlet pipe that can be convenient for enters into in the inlet pipe, increase the inside water pressure of inlet pipe.
Drawings
FIG. 1 is an isometric view of the present invention;
FIG. 2 is a rear view of the present invention;
FIG. 3 is an exploded view of the reservoir of the present invention;
fig. 4 is an exploded view of the filter mechanism of the present invention.
In the figure: 1. a water storage tank; 2. a controller; 3. a connecting pipe; 4. a flow meter; 5. mounting a column; 6. bending the pipe; 7. a water inlet pipe; 8. a pressurizing pipe; 9. a feed pump; 10. a water outlet pipe; 11. a filtering mechanism; 12. a high pressure nozzle; 13. a water feeding pipe; 14. installing a pipe; 15. a box body; 16. a water injection pipe; 17. a housing; 18. an electromagnetic valve; 19. a blow-off pipe; 20. a filter plate.
Detailed Description
Referring to fig. 1-4, a boiler feed pump cavitation prevention device comprises a water storage tank 1, a filtering mechanism 11 is communicated with the left side of the bottom of the water storage tank 1, a connecting pipe 3 is communicated with the bottom of the filtering mechanism 11, a flow meter 4 is communicated with the bottom of the connecting pipe 3, a bent pipe 6 is communicated with the bottom of the flow meter 4, a water inlet pipe 7 is communicated with the left end of the bent pipe 6, a feed pump 9 is communicated with the left end of the water inlet pipe 7, a water outlet pipe 10 is communicated with the water outlet end of the feed pump 9, a pressure pipe 8 is communicated with the right side of the water outlet pipe 10, a high-pressure nozzle 12 is communicated with the front side of the pressure pipe 8, the front side of the high-pressure nozzle 12 is communicated with the rear side of the water inlet pipe 7, the filtering mechanism 11 comprises a casing 17, a filter plate 20 is fixedly connected to the inner wall of the casing 17, an electromagnetic valve 18 is communicated with the front side of the casing 17, the water storage tank 1 comprises a tank body 15, a water injection pipe 16 is communicated with the outer surface of the water injection pipe 16, and an installation pipe 14 is communicated with the end of the water injection pipe 16 far away from the tank body 15.
In this embodiment: an external water source is connected through a mounting pipe 14, the external water source enters a box body 15 through the mounting pipe 14 and a water injection pipe 16, so that water enters the box body 15 stably, the vortex phenomenon is reduced, water inside the box body 15 enters the inside of a shell 17, a filter plate 20 filters impurities in the water, the cavitation phenomenon is reduced, the filtered water enters a connecting pipe 3 through the shell 17, the water inside the connecting pipe 3 enters a bent pipe 6 through a flowmeter 4, the flowmeter 4 detects the water flow and transmits a detection signal to a controller 2, a feed pump 9 is started and controlled to work at a low rotating speed, the feed pump 9 extracts the water inside the bent pipe 6 through a water inlet pipe 7 and discharges the extracted water to the inside of a water outlet pipe 10, the water outlet pipe 10 discharges the water into a boiler, when the inside of the box body 15 is filled with the water, the feed pump 9 is controlled to work at a high rotating speed, the phenomenon that gas inside the box body 15 enters the water feeding pump 9 at a high rotating speed to increase cavitation is avoided, high-pressure water inside the water outlet pipe 10 enters the water inlet pipe 7 through the pressurizing pipe 8 and the high-pressure nozzle 12 to increase the water inlet pressure of the water feeding pump 9 to reduce cavitation, and when the water inlet flow of the water feeding pump 9 is reduced, the controller 2 opens the electromagnetic valve 18, and the electromagnetic valve 18 and the sewage discharge pipe 19 discharge impurities inside the shell 17.
As a technical optimization scheme of the invention, the controller 2 is fixedly installed at the bottom of the front face of the water storage tank 1 through bolts, and the display screen and the control keys are respectively and fixedly installed on the front face of the controller 2.
In this embodiment: install controller 2 in the front of water storage box 1, can be convenient for receive flowmeter 4's detected signal to control solenoid valve 18 works, through the front installation display screen and the control button at controller 2, can be convenient for staff operation control ware 2, set up the opening time of solenoid valve 18 when decontaminating.
As a technical optimization scheme of the invention, the bottom of the water storage tank 1 is welded with the mounting column 5, and the bottom of the mounting column 5 is welded with the mounting seat.
In this embodiment: the bottom of the water storage tank 1 is welded with the mounting column 5, so that the water storage tank 1 can be stably supported, and the bottom of the mounting column 5 is welded with the mounting seat, so that the mounting column 5 can be conveniently fixed on the ground.
As a technical optimization scheme of the invention, the bottom of the water feed pump 9 is fixedly connected with a base through bolts, and the top of the water outlet pipe 10 is welded with a water outlet flange.
In this embodiment: the bottom of feed pump 9 is through bolt fixedly connected with base, and the base supports the bottom of feed pump 9, prevents that the bottom of feed pump 9 from receiving the corruption, at the top welding water outlet flange of outlet pipe 10, can connect the water supply pipe of boiler.
As a technical optimization scheme of the invention, the front surface of the electromagnetic valve 18 is communicated with a sewage discharge pipe 19, and the front surface of the sewage discharge pipe 19 is welded with a sewage discharge flange.
In this embodiment: the front side of the electromagnetic valve 18 is provided with a sewage discharge pipe 19 which can discharge sewage inside the electromagnetic valve 18, and a sewage discharge flange is welded on the front side of the sewage discharge pipe 19 so as to be convenient for discharging the sewage to a sewage collection pipeline and a sewer.
As a technical optimization scheme of the invention, the right side of the installation pipe 14 is communicated with a water feeding pipe 13, and the right end of the water feeding pipe 13 is welded with a water inlet flange.
In this embodiment: the right side of the installation pipe 14 is communicated with a water adding pipe 13, so that the installation pipe 14 can be conveniently connected with an external water supply pipeline, and a water source can enter the installation pipe 14.
When the water supply device is used, an external water source is connected through the mounting pipe 14, the external water source enters the box body 15 through the mounting pipe 14 and the water injection pipe 16, so that water enters the box body 15 stably, the vortex phenomenon is reduced, water inside the box body 15 enters the shell 17, impurities in the water are filtered by the filter plate 20, the cavitation phenomenon is reduced, the filtered water enters the connecting pipe 3 through the shell 17, the water inside the connecting pipe 3 enters the bent pipe 6 through the flowmeter 4, the flowmeter 4 detects the water flow and transmits a detection signal to the controller 2, the water supply pump 9 is started, the water supply pump 9 is controlled to work at a low rotating speed, the water inside the bent pipe 6 is extracted through the water inlet pipe 7 by the water supply pump 9, the extracted water is discharged into the water outlet pipe 10, the water is discharged into a boiler, when the box body 15 is filled with water, the water supply pump 9 is controlled to work at a high rotating speed, the phenomenon that gas inside the box body 15 enters the water feeding pump 9 at a high rotating speed to increase cavitation is avoided, high-pressure water inside the water outlet pipe 10 enters the water inlet pipe 7 through the pressurizing pipe 8 and the high-pressure nozzle 12 to increase the water inlet pressure of the water feeding pump 9 to reduce cavitation, and when the water inlet flow of the water feeding pump 9 is reduced, the controller 2 opens the electromagnetic valve 18, and the electromagnetic valve 18 and the sewage discharge pipe 19 discharge impurities inside the shell 17.
In summary, the following steps: the boiler feed pump anti-cavitation device solves the problem that cavitation phenomenon is caused due to the fact that feed liquid of a feed pump is unstable and impurities exist in water, so that air inflow of the feed pump is increased due to the fact that cavitation phenomenon occurs, through the matched use of a water storage tank 1, a controller 2, a connecting pipe 3, a flow meter 4, a bent pipe 6, a water inlet pipe 7, a pressurizing pipe 8, the feed pump 9, a water outlet pipe 10, a filtering mechanism 11 and a high-pressure nozzle 12; meanwhile, the water inlet low-pressure area of the water pump is pressurized, and the occurrence rate of bubbles in water is reduced.
Claims (6)
1. The utility model provides a boiler feed water pump anti-cavitation device, includes water storage box (1), its characterized in that: the water storage tank is characterized in that the left side of the bottom of the water storage tank (1) is communicated with a filtering mechanism (11), the bottom of the filtering mechanism (11) is communicated with a connecting pipe (3), the bottom of the connecting pipe (3) is communicated with a flow meter (4), the bottom of the flow meter (4) is communicated with a bent pipe (6), the left end of the bent pipe (6) is communicated with a water inlet pipe (7), the left end of the water inlet pipe (7) is communicated with a water feed pump (9), the water outlet end of the water feed pump (9) is communicated with a water outlet pipe (10), the right side of the water outlet pipe (10) is communicated with a pressure pipe (8), the front of the pressure pipe (8) is communicated with a high-pressure nozzle (12), the front of the high-pressure nozzle (12) is communicated with the rear side of the water inlet pipe (7), the filtering mechanism (11) comprises a shell (17), and a filtering plate (20) is fixedly connected to the inner wall of the shell (17), the front of the shell (17) is communicated with an electromagnetic valve (18), the water storage tank (1) comprises a tank body (15), the outer surface of the tank body (15) is communicated with a water injection pipe (16), and one end, far away from the tank body (15), of the water injection pipe (16) is communicated with an installation pipe (14).
2. The boiler feed water pump cavitation prevention device according to claim 1, characterized in that: the water storage tank is characterized in that a controller (2) is fixedly mounted at the bottom of the front face of the water storage tank (1) through a bolt, and a display screen and a control key are respectively and fixedly mounted on the front face of the controller (2).
3. The boiler feed water pump cavitation prevention device according to claim 1, characterized in that: the bottom welding of water storage box (1) has erection column (5), the bottom welding of erection column (5) has the mount pad.
4. The boiler feed water pump cavitation prevention device according to claim 1, characterized in that: the water supply device is characterized in that the bottom of the water supply pump (9) is fixedly connected with a base through a bolt, and a water outlet flange is welded at the top of the water outlet pipe (10).
5. The boiler feed water pump cavitation prevention device according to claim 1, characterized in that: the front side of the electromagnetic valve (18) is communicated with a sewage discharge pipe (19), and the front side of the sewage discharge pipe (19) is welded with a sewage discharge flange.
6. The boiler feed water pump cavitation prevention device according to claim 1, characterized in that: the right side intercommunication of installation pipe (14) has filler pipe (13), the right-hand member welding of filler pipe (13) has into water the flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210421984.5A CN114922792A (en) | 2022-04-21 | 2022-04-21 | Cavitation-proof device for boiler water-feeding pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210421984.5A CN114922792A (en) | 2022-04-21 | 2022-04-21 | Cavitation-proof device for boiler water-feeding pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114922792A true CN114922792A (en) | 2022-08-19 |
Family
ID=82807536
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210421984.5A Pending CN114922792A (en) | 2022-04-21 | 2022-04-21 | Cavitation-proof device for boiler water-feeding pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114922792A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08338607A (en) * | 1995-06-12 | 1996-12-24 | Mitsubishi Heavy Ind Ltd | Cavitation prevention apparatus for feed water pump |
| CN201196410Y (en) * | 2008-04-23 | 2009-02-18 | 大连汇能技术服务有限公司 | Low-grade thermal deoxidization device |
| JP2011237065A (en) * | 2010-05-07 | 2011-11-24 | Samson Co Ltd | High-temperature drain collection system |
| JP2011237099A (en) * | 2010-05-10 | 2011-11-24 | Hitachi Chem Co Ltd | Feed water tank for steam boiler |
| CN108050109A (en) * | 2018-01-08 | 2018-05-18 | 浙江理工大学 | A kind of centrifugal pump and its method of work for inhibiting cavitation |
| CN214837144U (en) * | 2021-07-09 | 2021-11-23 | 浙江钜森机电有限公司 | Novel centrifugal pump |
-
2022
- 2022-04-21 CN CN202210421984.5A patent/CN114922792A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08338607A (en) * | 1995-06-12 | 1996-12-24 | Mitsubishi Heavy Ind Ltd | Cavitation prevention apparatus for feed water pump |
| CN201196410Y (en) * | 2008-04-23 | 2009-02-18 | 大连汇能技术服务有限公司 | Low-grade thermal deoxidization device |
| JP2011237065A (en) * | 2010-05-07 | 2011-11-24 | Samson Co Ltd | High-temperature drain collection system |
| JP2011237099A (en) * | 2010-05-10 | 2011-11-24 | Hitachi Chem Co Ltd | Feed water tank for steam boiler |
| CN108050109A (en) * | 2018-01-08 | 2018-05-18 | 浙江理工大学 | A kind of centrifugal pump and its method of work for inhibiting cavitation |
| CN214837144U (en) * | 2021-07-09 | 2021-11-23 | 浙江钜森机电有限公司 | Novel centrifugal pump |
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