CN203500131U - Cavitation removal device - Google Patents
Cavitation removal device Download PDFInfo
- Publication number
- CN203500131U CN203500131U CN201320641028.4U CN201320641028U CN203500131U CN 203500131 U CN203500131 U CN 203500131U CN 201320641028 U CN201320641028 U CN 201320641028U CN 203500131 U CN203500131 U CN 203500131U
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- Prior art keywords
- cavitation
- operated valve
- pump
- pump housing
- flow probe
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Abstract
The utility model relates to the technical field of engineering machines, in particular to a cavitation removal device. The cavitation removal device is provided with a pump body and is characterized in that the pump body is provided with a cavitation removal device body, and the cavitation removal device body comprises an electrically operated valve, a control device, an air inlet pipe, an exploring tube and a flow probe; the pump body is provided with an air hole, the flow probe is arranged on a water inlet of the pump body, the exploring tube is inserted into the air hole, an air outlet of the exploring tube is communicated with a cavitation area of the pump body, an air inlet of the exploring tube is communicated with the atmosphere through the air inlet pipe, the electrically operated valve is arranged at the air inlet pipe end, and the flow probe and the electrically operated valve are respectively connected with the control device. By the adoption of the structure, the working efficiency of a water pump is not affected, the great damage of the cavitation phenomenon to the water pump for a long time is completely avoided, and the device has the advantages of being simple in structure, convenient to operate, low in cost, reliable to use and the like.
Description
Technical field
The utility model relates to technical field of engineering machinery, specifically a kind of cavitation cancellation element.
Background technique
So-called cavitation claims again cavitation, is the specific physical phenomenon of liquid.Water pump is in running, while making for some reason the pressure of local location in pump drop to the saturated vapor pressure (pressure for vaporization) of water under relevant temperature, water just starts vaporization and generates a large amount of bubbles, and steam bubble travels forward with current, while moving to pressure higher part position, condense rapidly, crumble and fall.In pump, in current, generation, the process of crumbling and fall of steam bubble relate to physics, chemical phenomenon, and produce noise, vibration and the erosion to flow passage components.This phenomenon is called the cavitation phenomenons of water pump.Water pump is in producing the process of cavitation, owing to containing steam bubble in current, destroyed the proper flow rule of current, changed in runner to area of passage and flow direction, thereby the stability of energy interchange between impeller and current is destroyed, energy loss increases, thereby causes the rapid decline of flow, lift and the efficiency of centrifugal pump, even reaches disconnection state.The conversion of this service behaviour is different for the water pump of different specific speeds.
When steam bubble is crumbled and fall, current are because inertia high-speed punching is to steam bubble center, produce strong water hammer, its pressure can reach (33-5700) mpa, and the frequency of impact reaches 20,000-30,000 times/s, large like this pressure frequency effect is on flow passage components, cause that metal surface local plastic deformation and sclerosis become fragile, produce fatigue phenomenon, it is cellular-shaped that metal surface starts to be, stress is more concentrated thereupon, and blade occurs crack and peels off.The mechanical denudation of cavitation that Here it is.
Di district generates in the process of steam bubble, and the gas being dissolved in the water is also separated out from water, thus steam bubble actual be the mixture of steam and air.The high temperature of living and being produced when ripple gas (as oxygen) condenses by steam bubble, produces chemical corrosion effect to metal surface.
In order to solve this cavitation phenomenons, at present, have to adopt and post corrosion protection piece at impeller outer edge, to increase the corrosion protection of impeller, but can't resolve the question of substance of cavitation, the sealability of the pump housing is reduced, also there is the backflow of employing to be added to mouth pressure, highly pressurised liquid is introduced into after entrance, and inlet fluid is mixed in one, its deficiency is to cause the liquid outlet quantity of pump to reduce, inefficiency, the employing also having increases double-entry impeller and adopts inducer structure, and its deficiency is: complex structure, cost is high.
Up to the present, also do not have a kind of structure can thoroughly solve this cavitation phenomenons in the pump housing.
Summary of the invention
The purpose of this utility model is to solve above-mentioned the deficiencies in the prior art, provide a kind of simple in structure, easy to operate, cost is low, long service life, working efficiency are high, the cavitation cancellation element of thoroughly eliminating cavitation phenomenons.
The utility model solves the technological scheme that its technical problem adopts:
A kind of cavitation cancellation element, be provided with the pump housing, it is characterized in that the pump housing is provided with cavitation cancellation element, described cavitation cancellation element comprises and is provided with mortor operated valve, control gear, suction tude, inserting tube and flow probe, the described pump housing is provided with vent, the water intake of the pump housing is provided with flow probe, described inserting tube is inserted in vent, the air outlet of inserting tube is connected with the cavitation district of the pump housing, suction port is connected with atmosphere through suction tude, described air inlet pipe end is provided with mortor operated valve, flow probe is connected with control gear respectively with mortor operated valve, when pump is started working, the flow probe that is contained in water inlet is transported to control gear by signal, control gear is opened mortor operated valve according to the time command of setting again, by modulating valve, control gas circuit aperture, make atmosphere through suction tude and inserting tube, enter into cavitation district by mortor operated valve, thereby dredged the circulation of cavitation district high pressure steam bubble, formed the air conservation layer outside high pressure bubble, damping effect lower pump body at protective layer has obtained effective protection like this, while air-flow is wrapped in bubble and is sent outside pump by evacuation.
The utility model is provided with modulating valve at the inlet end of suction tude, controls the gas circuit aperture of suction tude by the adjusting screw on modulating valve, realizes micro-connection, thereby obtains optimal operational condition.
The utility model, owing to adopting said structure, without impact, has thoroughly solved the great harm of cavitation phenomenons to water pump for a long time on the working efficiency of water pump, have simple in structure, easy to operate, cost is low, use the advantages such as reliable.
accompanying drawing explanation
Fig. 1 is embodiment's of the present utility model structural representation.
Fig. 2 is the left view of Fig. 1.
Fig. 3 is the structural representation of the utility model cavitation cancellation element.
Fig. 4 is the sectional view of A-A in Fig. 3.
Fig. 5 is the plan view of Fig. 3.
Reference character: the pump housing 1, mortor operated valve 2, suction tude 3, inserting tube 4, flow probe 5,, modulating valve 6, support 7.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further illustrated:
As shown in drawings, a kind of cavitation cancellation element, be provided with the pump housing 1, it is characterized in that the pump housing is provided with cavitation cancellation element, described cavitation cancellation element comprises mortor operated valve 2, suction tude 3, inserting tube 4, flow probe 5 and control gear, the described pump housing 1 is provided with vent, the water intake of the pump housing 1 is provided with flow probe 5, described inserting tube 4 is inserted in vent, the air outlet of inserting tube 4 is connected with the cavitation district of the pump housing 1, suction port is connected with atmosphere through suction tude 3, described suction tude 3 is provided with mortor operated valve 2, described mortor operated valve 2 is connected with control gear respectively with flow probe 5, when pump is started working, the flow probe 5 that is contained in water inlet is transported to control gear by signal, control gear is again according to time command mortor operated valve 2 delayed start-ups of setting, make atmosphere through suction tude 3 and inserting tube 4, enter into cavitation district by mortor operated valve 2, thereby dredged the circulation of cavitation district high pressure steam bubble, formed the air conservation layer outside high pressure steam bubble, cushioning effect lower pump body at protective layer has obtained substantial protection like this, simultaneously, air-flow is wrapped in steam bubble and is sent outside pump by evacuation.
The utility model also can be provided with at the inlet end of suction tude 3 modulating valve 6, and the adjusting screw on described modulating valve 6 is controlled the gas circuit aperture of suction tude 3, realizes micro-connection, thereby obtains optimal operational condition.
Embodiment 1: a kind of cavitation cancellation element, be provided with the pump housing 1 or tank body, the pump housing 1 or tank body are provided with cavitation cancellation element, described cavitation cancellation element comprises mortor operated valve 2, suction tude 3, inserting tube 4, flow probe 5 and control gear, the described pump housing 1 or tank body are provided with vent, the water intake of the pump housing 1 or tank body is provided with flow probe 5, described inserting tube 4 is inserted in vent, the air outlet of inserting tube 4 is connected with the cavitation district of the pump housing 1, suction port is connected with atmosphere through suction tude 3, described suction tude 3 is provided with mortor operated valve 2, described mortor operated valve 2 is connected with control gear respectively with flow probe 5, the utility model when mounted, mortor operated valve 2 can be fixed on support 7, support 7 is fixed on the pump housing 1 or tank body again, when pump or tank are started working, originally, water pump is at low cruise with while stopping, the flow probe that is contained in inlet can not send actuating signal, therefore, suction tude is all the time in closed condition, there will not be water pump and large gas phase to link up, also the situation that does not just exist current to go out occurs.When the water of unit fixed on water pump suction reaches the flow velocity of setting; the flow probe 5 that is contained in water inlet is transported to control gear by signal; control gear is again according to time command mortor operated valve 2 delayed start-ups of setting; make atmosphere through suction tude 3 and inserting tube 4, enter into cavitation district by mortor operated valve 2; thereby dredged the circulation of cavitation district high pressure steam bubble; formed the air conservation layer outside high pressure steam bubble; cushioning effect lower pump body at protective layer has obtained substantial protection like this; meanwhile, air-flow is wrapped in steam bubble and is sent outside pump by evacuation.The utility model, owing to adopting said structure, without impact, has thoroughly solved the great harm of cavitation phenomenons to water pump for a long time on the working efficiency of water pump, have simple in structure, easy to operate, cost is low, use the advantages such as reliable.
Water pot tube coupling sidewall
Embodiment 2: a kind of cavitation cancellation element, be provided with the pump housing 1 or tank body, the pump housing 1 is provided with cavitation cancellation element, described cavitation cancellation element comprises mortor operated valve 2, modulating valve 6, suction tude 3, inserting tube 4, flow probe 5 and control gear, the described pump housing 1 or tank body are provided with vent, the water intake of the pump housing 1 is provided with flow probe 5, described inserting tube 4 is inserted in vent, the air outlet of inserting tube 4 is connected with the cavitation district of the pump housing 1, suction port is connected with atmosphere through suction tude 3, described suction tude 3 is provided with mortor operated valve 2, described mortor operated valve 2 is connected with control gear respectively with flow probe 5, the inlet end of described suction tude 3 is provided with modulating valve 6, by the adjusting screw on modulating valve, control the gas circuit aperture of suction tude, realize micro-connection, thereby acquisition optimal operational condition.The utility model when mounted, mortor operated valve 2 can be fixed on support 7, support 7 is fixed on the pump housing 1 again, when water pump is started working, originally, water pump is at low cruise with while stopping, the flow probe that is contained in inlet can not send actuating signal, and therefore, suction tude is all the time in closed condition, there will not be water pump and large gas phase to link up, the situation that does not also just exist current to go out occurs.When the water of pump intake reaches the flow velocity of setting, the flow probe 5 that is contained in water inlet is transported to control gear by signal, control gear is again according to time command mortor operated valve 2 delayed start-ups of setting, make atmosphere through suction tude 3 and inserting tube 4, enter into cavitation district by mortor operated valve 2, in order to obtain best using effect, according to the runnability in the on-the-spot pump housing, by adjusting the air inflow of the 6 pairs of suction tude 3 of modulating valve on modulating valve 6, finely tune again, reach cavitation district and form micro-effect being communicated with atmosphere, thereby dredged the circulation of cavitation district high pressure steam bubble, formed the air conservation layer outside high pressure steam bubble, cushioning effect lower pump body at protective layer has obtained substantial protection like this, simultaneously, air-flow is wrapped in steam bubble and is sent outside pump by evacuation.The utility model, owing to adopting said structure, without impact, has thoroughly solved the great harm of cavitation phenomenons to water pump for a long time on the working efficiency of water pump, have simple in structure, easy to operate, cost is low, use the advantages such as reliable.
Claims (2)
1. a cavitation cancellation element, be provided with the pump housing, it is characterized in that the pump housing is provided with cavitation cancellation element, described cavitation cancellation element comprises and is provided with mortor operated valve, control gear, suction tude, inserting tube and flow probe, the described pump housing is provided with vent, the water intake of the pump housing is provided with flow probe, described inserting tube is inserted in vent, the air outlet of inserting tube is connected with the cavitation district of the pump housing, suction port is connected with atmosphere through suction tude, described air inlet pipe end is provided with mortor operated valve, and flow probe is connected with control gear respectively with mortor operated valve.
2. a kind of cavitation cancellation element according to claim 1, is characterized in that the inlet end of described suction tude is provided with modulating valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320641028.4U CN203500131U (en) | 2013-10-17 | 2013-10-17 | Cavitation removal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320641028.4U CN203500131U (en) | 2013-10-17 | 2013-10-17 | Cavitation removal device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203500131U true CN203500131U (en) | 2014-03-26 |
Family
ID=50331113
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320641028.4U Expired - Fee Related CN203500131U (en) | 2013-10-17 | 2013-10-17 | Cavitation removal device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203500131U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103486088A (en) * | 2013-10-17 | 2014-01-01 | 山东双轮股份有限公司 | Cavitation eliminating device |
-
2013
- 2013-10-17 CN CN201320641028.4U patent/CN203500131U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103486088A (en) * | 2013-10-17 | 2014-01-01 | 山东双轮股份有限公司 | Cavitation eliminating device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140326 Termination date: 20161017 |
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| CF01 | Termination of patent right due to non-payment of annual fee |