CN204716636U - A kind of device eliminating cavitation - Google Patents
A kind of device eliminating cavitation Download PDFInfo
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- CN204716636U CN204716636U CN201520363944.5U CN201520363944U CN204716636U CN 204716636 U CN204716636 U CN 204716636U CN 201520363944 U CN201520363944 U CN 201520363944U CN 204716636 U CN204716636 U CN 204716636U
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- gas
- cavitation
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Abstract
The utility model relates to a kind of device eliminating cavitation, comprise intake line, water pump, the water in pond enters water pump via intake line, and this device also comprises pressurized gas line, pressurized gas line is connected with the device that can provide pressed gas, pressurized gas line is provided with pressure gauge and valve.The device of pressed gas can be provided to be pressed gas tank.Water pump normal procedure is started shooting, and has cavitation noise to exist after start; Intake line installs the access gas pipeline of a band pressure gauge and valve near water pump suction port; By the device of pressed gas can be provided to be pressed into pressed gas by the pressurized gas line being contained in intake line, after gas access, cavitation noise is eliminated immediately; Water pump first stops the press-in of pressed gas by valve before shutting down; Then pressed gas closes down water pump after closing.Inlet pipeline cut-in pressure gas of the present utility model, the mode utilizing pressure to neutralize is by fundamentally eliminating cavitation, easy to operate, and cost ineffective fruit is good.
Description
Technical field
The utility model relates to a kind of device eliminating cavitation, and be specifically related to a kind of inlet pipeline cut-in pressure gas, the mode utilizing pressure to neutralize fundamentally eliminates the device of the elimination cavitation of cavitation.
Background technique
During centrifugal pump work, pump internal pressure minimum point is usually located near impeller blade import after a while a bit.When Pressure Drop is herein to when being transferred the saturation vapour pressure of liquid now at temperature, will seethe with excitement, the steam bubble generated with liquid from the outside Zhou Liudong of entrance, again because pressure increases and sharply condensation rapidly.Liquid can be made to rush at bubble center with very large speed from surrounding, and produce the impact that frequency is very high, instantaneous pressure is very large, this phenomenon is called cavitation phenomenons.
Be delivered to the shock wave of harm impeller and pump case during cavitation, add the acting in conjunction that the oxygen of oligodynamical in liquid corrodes metallochemistry, after a certain time, its surface can be made to occur spot and crack, even progressively come off in spongy; When there is cavitation, also can send noise, and then the pump housing is vibrated; Simultaneously because the generation of steam makes the bulk density of liquid decline, so liquid actual flow, outlet pressure and efficiency all decline, can cause time serious completely can not output liquid.
Generation cavitation phenomenons essential reason is the saturation vapour pressure under inlet pressure is less than fluid delivery temperature.
Cavitation is huge to water pump harm, and a lot of water pump all more or less exists cavitation phenomenons, and cavitation can make pump performance decline, and produces noise and vibration, and makes the pump lost of life, make pump work time serious.
Present pump industry is eliminated or the method for minimizing cavitation mainly contains following 5 kinds:
1, the good impeller of cavitation performance (pump re-used for scene is difficult to realize, and improves little to cavitation performance) is designed;
2, reduce setting height of pump, this method civil engineering rectifying and improving amount is large, and cost is high, is difficult to realize;
3, improve water level in water pool (and improving intake pressure), this method scene is changed large, and cost is high, is difficult to realize;
4, make the cavitation erosion resistant material made good use of, this kind of method can not eliminate cavitation can only extend pump working life, and cost is high.
5, anti-cavitation coating is coated with: this kind of method can not eliminate cavitation with the 4th kind can only extend pump working life, and cost is high.
Above method, concerning the pump of onsite application, all extremely difficultly to realize, and cost is high.
Model utility content
For the problems referred to above, main purpose of the present utility model is to provide a kind of inlet pipeline cut-in pressure gas, and the mode utilizing pressure to neutralize fundamentally eliminates the device of cavitation.
The utility model solves above-mentioned technical problem by following technical proposals: a kind of device eliminating cavitation, the device of described elimination cavitation comprises intake line, water pump, the water in pond enters water pump via intake line, it is characterized in that: described cavitation cancellation element also comprises pressurized gas line, pressurized gas line is connected with the device that can provide pressed gas, described pressurized gas line is provided with pressure gauge and valve.
In specific embodiment of the present utility model, the described device of pressed gas that can provide is pressed gas tank.
In specific embodiment of the present utility model, the gas in described pressed gas tank is for there being pressed gas.
In specific embodiment of the present utility model, described pressed gas tank is air pump.
In specific embodiment of the present utility model, described pressed gas tank is oxygen tank.
In specific embodiment of the present utility model, described pressed gas tank is compressor.
In specific embodiment of the present utility model, described intake line is provided with pressure gauge.
Positive progressive effect of the present utility model is: the cavitation cancellation element that the utility model provides has the following advantages: inlet pipeline cut-in pressure gas of the present utility model, the mode utilizing pressure to neutralize is by fundamentally eliminating cavitation, easy to operate, cost ineffective fruit is good.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present utility model.
Embodiment
The utility model preferred embodiment is provided, to describe the technical solution of the utility model in detail below in conjunction with accompanying drawing.
Fig. 1 is overall structure schematic diagram of the present utility model.As shown in Figure 1, the utility model comprises intake line 1, water pump 2, the water in pond 3 enters water pump 2 via intake line 1, device of the present utility model also comprises pressurized gas line 4, pressurized gas line 4 is connected with the device 5 that can provide pressed gas, pressurized gas line 4 is provided with pressure gauge 7 and valve 8.Intake line 1 is provided with pressure gauge 6.
In specific implementation process of the present utility model, the device that can provide pressed gas can be generally pressed gas tank, and the gas in pressed gas tank is for there being pressed gas, and pressed gas tank can be air pump, oxygen tank, compressor etc.
Adopt one, the device provided of the present utility model specifically to eliminate the method for cavitation, comprise the steps:
Step (1), water pump normal procedure are started shooting, and have cavitation noise to exist after start;
Step (2), intake line install the access gas pipeline of a band valve near water pump suction port;
Step (3), by can provide the device of pressed gas by be contained in intake line pressurized gas line be pressed into pressed gas, gas access after cavitation noise eliminate immediately;
Step (4), water pump first stop the press-in of pressed gas by valve before shutting down;
Then step (5), pressed gas close down water pump after closing.
In the utility model, intake line 1 connects the gas higher than unit fixed on water pump suction pressure 0.1-0.3MPa pressure, eliminates pump cavitation by the pressure accessing gas.As long as the gas having pressure of access, in pressurized air, air pump, oxygen tank, compressor gas all can, simply, cost is low for execute-in-place.
Here is the example of a concrete elimination cavitation:
Steel mill's circulating water pump workshop, Tangshan one uses three flow 6000m
3/ h water pump, water feeding of water pump pipeline gage pressure 0.015MPa, pump cavitation noise is serious, and the cavitation perforation in 2 months of cast steel impeller can not use.Be 0.2MPa pressed gas when water pump operation by steel mill's compressed air line cut-in pressure, after access, cavitation noise is eliminated, and water pump operation is steady, and water pump vane uses 6 months also serious cavitation damage not to occur.
The utility model inlet pipeline cut-in pressure gas device, the mode utilizing pressure to neutralize is by fundamentally eliminating cavitation, easy to operate, and cost ineffective fruit is good.
More than show and describe basic principle of the present utility model and major character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present utility model; under the prerequisite not departing from the utility model spirit and scope; the utility model also has various changes and modifications; these changes and improvements all fall within the scope of claimed the utility model, and the claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (7)
1. eliminate the device of cavitation for one kind, the device of described elimination cavitation comprises intake line, water pump, the water in pond enters water pump via intake line, it is characterized in that: described cavitation cancellation element also comprises pressurized gas line, pressurized gas line is connected with the device that can provide pressed gas, described pressurized gas line is provided with pressure gauge and valve.
2. the device of elimination cavitation according to claim 1, is characterized in that: the described device of pressed gas that can provide is pressed gas tank.
3. the device of elimination cavitation according to claim 2, is characterized in that: the gas in described pressed gas tank is for there being pressed gas.
4. the device of elimination cavitation according to claim 3, is characterized in that: described pressed gas tank is air pump.
5. the device of elimination cavitation according to claim 3, is characterized in that: described pressed gas tank is oxygen tank.
6. the device of elimination cavitation according to claim 3, is characterized in that: described pressed gas tank is compressor.
7. the device of the elimination cavitation according to claim 1 or 2 or 3, is characterized in that: described intake line is provided with pressure gauge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520363944.5U CN204716636U (en) | 2015-05-29 | 2015-05-29 | A kind of device eliminating cavitation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520363944.5U CN204716636U (en) | 2015-05-29 | 2015-05-29 | A kind of device eliminating cavitation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204716636U true CN204716636U (en) | 2015-10-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520363944.5U Expired - Fee Related CN204716636U (en) | 2015-05-29 | 2015-05-29 | A kind of device eliminating cavitation |
Country Status (1)
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| CN (1) | CN204716636U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104929988A (en) * | 2015-05-29 | 2015-09-23 | 上海东方泵业(集团)有限公司 | Cavitation eliminating method and device |
-
2015
- 2015-05-29 CN CN201520363944.5U patent/CN204716636U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104929988A (en) * | 2015-05-29 | 2015-09-23 | 上海东方泵业(集团)有限公司 | Cavitation eliminating method and device |
| CN104929988B (en) * | 2015-05-29 | 2018-04-13 | 上海东方泵业(集团)有限公司 | A kind of method and apparatus for eliminating cavitation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151021 Termination date: 20160529 |
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| CF01 | Termination of patent right due to non-payment of annual fee |