CN208073880U - Anti- cavitation fore pump - Google Patents
Anti- cavitation fore pump Download PDFInfo
- Publication number
- CN208073880U CN208073880U CN201820498316.1U CN201820498316U CN208073880U CN 208073880 U CN208073880 U CN 208073880U CN 201820498316 U CN201820498316 U CN 201820498316U CN 208073880 U CN208073880 U CN 208073880U
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- liquid
- trunnion
- cavitation
- fore pump
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Abstract
The utility model provides a kind of anti-cavitation fore pump, including compresses boost section, liquid input section, goes out liquid section, and liquid input section is arranged the input end in compression boost section, goes out liquid section and be arranged in the outlet end for going out liquid section, and going out connection between liquid section and liquid input section, there are one drainage tubes.Anti- cavitation fore pump is flowed back using going out a small amount of high pressure water of liquid section as working fluid, it is transported to liquid input section by drainage tube, high pressure water flow is mixed with the easy gasifying liquid of script relatively low pressure in liquid input section, form a kind of fluid-mixing of moderate pressure, to improve the pressure of fluid in liquid input section, so that liquid is become stable state, and then reduces liquid " cavitation " phenomenon and formed.Total is simple, and it is convenient to realize, without improving the mounting height of large-scale device for output of liquid, manufacturing cost is low, has the characteristics that highly practical, is worthy of popularization.
Description
Technical field
The utility model is related to anti-cavitation technical fields, in particular to a kind of anti-cavitation fore pump.
Background technology
Ordinary Centrifugal Pumps are when conveying easy gasifying liquid, and due to the suction force of impeller, " vapour is often generated in the inlet of water pump
Erosion " phenomenon causes flow and lift sharp-decay, the damage of impeller can be also caused for a long time, the case where being unable to operate normally.
The positive pressure head for selecting net positive suction head lower pump and raising pump intake, is to overcome the effective way of cavitation, but can not
It tackles the problem at its root.And the large-scale liquid output of promotion is often taken for the pump intake pressure head of raising in traditional method
The mounting height of device, considerably increases installation cost.
Invention content
The main purpose of the utility model is to provide a kind of anti-cavitation fore pump, with solve it is in the prior art commonly from
Heart pump is conveying the problem of easy gasifying liquid easy tos produce " cavitation " phenomenon.
To achieve the goals above, the utility model provides a kind of anti-cavitation fore pump, including compression boost section, feed liquor
Section goes out liquid section, and the input end in compression boost section is arranged in liquid input section, goes out liquid section and is arranged in the outlet end for going out liquid section, go out liquid section and
There are one drainage tubes for connection between liquid input section.
Further, liquid input section includes trunnion contraction section, trunnion section, trunnion diffuser and pressure-stabilizing section connected in sequence, larynx
The internal diameter of pipe contraction section is connect in horn-like and small end with trunnion section, the small end inner diameter of trunnion contraction section and the internal diameter phase of trunnion section
Together, trunnion section is the consistent straight-run of pipe of inner diameter size, and the internal diameter of trunnion diffuser is connect in horn-like and small end with trunnion section,
The small end inner diameter of trunnion diffuser is identical as the internal diameter of trunnion section, and pressure-stabilizing section is that internal diameter is identical as the big end internal diameter of trunnion diffuser
Straight-run of pipe.
Further, drainage tube stretches into a part inside trunnion contraction section and forms the opening of nozzle and nozzle towards trunnion section
Side.
Further, the central axis of nozzle is overlapped with the central axis of trunnion contraction section.
Using the technical solution of the utility model, anti-cavitation fore pump is flowed back using a small amount of high pressure water for going out liquid section as work
Fluid is transported to liquid input section by drainage tube, and high pressure water flow is mixed with the easy gasifying liquid of script relatively low pressure in liquid input section,
A kind of fluid-mixing of moderate pressure is formed, to improve the pressure of fluid in liquid input section, so that liquid is become stable state, in turn
Liquid " cavitation " phenomenon is reduced to be formed.Total is simple, and it is convenient to realize, the installation without improving large-scale device for output of liquid is high
Degree, manufacturing cost is low, has the characteristics that highly practical, is worthy of popularization.
Description of the drawings
The accompanying drawings which form a part of this application are used to provide a further understanding of the present invention, this practicality
Novel illustrative embodiments and their description are not constituted improper limits to the present invention for explaining the utility model.
In the accompanying drawings：
Fig. 1 shows the structural schematic diagram of the anti-cavitation fore pump of the utility model.
Wherein, above-mentioned attached drawing includes the following drawings label：
10, boost section is compressed；20, liquid input section；21, trunnion contraction section；22, trunnion section；23, trunnion diffuser；24, voltage stabilizing
Section；30, go out liquid section；40, drainage tube；41, nozzle.
Specific implementation mode
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The utility model will be described in detail below with reference to the accompanying drawings and embodiments.
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.Unless another
It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
In the present invention, in the absence of explanation to the contrary, the noun of locality used such as " upper and lower, top, bottom " is usually
It is for direction shown in the drawings, or for component itself is on vertical, vertical or gravity direction；Together
Sample, it for ease of understanding and describes, " inside and outside " refers to the inside and outside of the profile relative to each component itself, but the above-mentioned noun of locality is simultaneously
It is not used in limitation the utility model.
To solve the problems, such as that Ordinary Centrifugal Pumps in the prior art easy to produce " cavitation " phenomenon in the easy gasifying liquid of conveying,
The utility model provides a kind of anti-cavitation fore pump.
As shown in Figure 1, anti-cavitation fore pump includes compression boost section 10, liquid input section 20, goes out liquid section 30, liquid input section 20 is arranged
In the input end of compression boost section 10, goes out liquid section 30 and be arranged in the outlet end for going out liquid section 30, go out between liquid section 30 and liquid input section 20
There are one drainage tubes 40 for connection.
Anti- cavitation fore pump is flowed back using a small amount of high pressure water for going out liquid section 30 as working fluid, is transported to by drainage tube 40
Liquid input section 20, high pressure water flow are mixed with the easy gasifying liquid of script relatively low pressure in liquid input section 20, form a kind of moderate pressure
Fluid-mixing so that liquid is become stable state to improve the pressure of fluid in liquid input section 20, and then reduce liquid " cavitation "
Phenomenon is formed.Total is simple, and it is convenient to realize, without improving the mounting height of large-scale device for output of liquid, manufacturing cost is low,
Have the characteristics that highly practical.
As shown in Figure 1, liquid input section 20 includes trunnion contraction section 21 connected in sequence, trunnion section 22,23 and of trunnion diffuser
The internal diameter of pressure-stabilizing section 24, trunnion contraction section 21 is connect in horn-like and small end with trunnion section 22, in the small end of trunnion contraction section 21
Diameter is identical as the internal diameter of trunnion section 22, and trunnion section 22 is the consistent straight-run of pipe of inner diameter size, and the internal diameter of trunnion diffuser 23 is in
Horn-like and small end is connect with trunnion section 22, and the small end inner diameter of trunnion diffuser 23 is identical as the internal diameter of trunnion section 22, pressure-stabilizing section
24 be internal diameter straight-run of pipe identical with the big end internal diameter of trunnion diffuser 23.Drainage tube 40 stretches into 21 inside one of trunnion contraction section
Part forms the opening of nozzle 41 and nozzle 41 towards 22 side of trunnion section.
Highly pressurised liquid enters trunnion contraction section 21 from the ejection of nozzle 41, and as internal diameter is gradually reduced, flow velocity gradually increases,
" suction " is formed to low pressure liquid, after low pressure liquid is sucked in and highly pressurised liquid forms mixed liquor, in 21 liquid of trunnion contraction section
Body flow velocity increases, and pressure is gradually reduced.Liquid enters from trunnion contraction section 21 in trunnion section 22, and internal diameter is constant, and pipe with small pipe diameter liquid is fast
Speed passes through.Liquid enters trunnion diffuser 23, and internal diameter gradually increases, and flow rate of liquid is gradually reduced, and pressure liquid pressure gradually increases
Add, into pressure-stabilizing section 24 after pressure stablize.In entire liquid input section 20, fluid forms " injection supercharging " effect, completes high pressure liquid
The mixing of body and low pressure liquid and the increase of pressure.
Preferably, the central axis of nozzle 41 is overlapped with the central axis of trunnion contraction section 21.
It can be seen from the above description that the above embodiments of the present invention achieve the following technical effects：
1. at the anti-cavitation fore pump of the utility model heat recovery technology field pre- applied to liquid, can carry significantly
High waste heat recovery rate promotes traditional open type condensate-water polishing to develop to more energy efficient more environmentally friendly closed recovery technology；
2. the anti-cavitation fore pump of application the utility model, it is possible to reduce in order to promote pump intake pressure head in work progress
And improve huge input caused by device mounting height.
3. greatly reducing " cavitation " phenomenon, centrifugal pump can be protected because the frequent damage caused by cavitation reason causes
Termination of pumping and maintenance cost.
It should be noted that term used herein above is merely to describe specific implementation mode, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
It is also intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, work, device, component and/or combination thereof.
It should be noted that the term " comprising " in the description and claims of this application and above-mentioned attached drawing and " tool
Have " and their any deformation, it is intended that cover it is non-exclusive include, for example, containing series of steps or unit
Process, method, system, product or equipment those of are not necessarily limited to clearly to list step or unit, but may include without clear
It is listing to Chu or for these processes, method, product or equipment intrinsic other steps or unit.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (4)
1. a kind of anti-cavitation fore pump, which is characterized in that including compressing boost section（10）, liquid input section（20）, go out liquid section（30）, institute
State liquid input section（20）It is arranged in the compression boost section（10）Input end, it is described go out liquid section（30）Setting it is described go out liquid section
（30）Outlet end, it is described go out liquid section（30）With the liquid input section（20）Between connection there are one drainage tube（40）.
2. anti-cavitation fore pump according to claim 1, which is characterized in that the liquid input section（20）Including connected in sequence
Trunnion contraction section（21）, trunnion section（22）, trunnion diffuser（23）And pressure-stabilizing section（24）, the trunnion contraction section（21）Internal diameter
In horn-like and small end and the trunnion section（22）Connection, the trunnion contraction section（21）Small end inner diameter and the trunnion section
（22）Internal diameter it is identical, the trunnion section（22）For the consistent straight-run of pipe of inner diameter size, the trunnion diffuser（23）It is interior
Diameter is in horn-like and small end and the trunnion section（22）Connection, the trunnion diffuser（23）Small end inner diameter and the trunnion section
（22）Internal diameter it is identical, the pressure-stabilizing section（24）For internal diameter and the trunnion diffuser（23）Big end internal diameter it is identical one section it is straight
Pipe.
3. anti-cavitation fore pump according to claim 2, which is characterized in that the drainage tube（40）The trunnion is stretched into receive
Contracting section（21）An internal part forms nozzle（41）And the nozzle（41）Opening towards the trunnion section（22）Side.
4. anti-cavitation fore pump according to claim 3, which is characterized in that the nozzle（41）Central axis with it is described
Trunnion contraction section（21）Central axis overlap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820498316.1U CN208073880U (en) | 2018-04-09 | 2018-04-09 | Anti- cavitation fore pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820498316.1U CN208073880U (en) | 2018-04-09 | 2018-04-09 | Anti- cavitation fore pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208073880U true CN208073880U (en) | 2018-11-09 |
Family
ID=64040286
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820498316.1U Expired - Fee Related CN208073880U (en) | 2018-04-09 | 2018-04-09 | Anti- cavitation fore pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208073880U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108412815A (en) * | 2018-04-09 | 2018-08-17 | 大连申域流体机械有限公司 | Anti- cavitation fore pump |
| CN113007153A (en) * | 2021-03-26 | 2021-06-22 | 中国船舶重工集团公司第七一九研究所 | Anti-cavitation jet pump |
-
2018
- 2018-04-09 CN CN201820498316.1U patent/CN208073880U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108412815A (en) * | 2018-04-09 | 2018-08-17 | 大连申域流体机械有限公司 | Anti- cavitation fore pump |
| CN113007153A (en) * | 2021-03-26 | 2021-06-22 | 中国船舶重工集团公司第七一九研究所 | Anti-cavitation jet pump |
| CN113007153B (en) * | 2021-03-26 | 2022-11-08 | 中国船舶重工集团公司第七一九研究所 | Anti-cavitation jet pump |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181109 |