CN203051252U - Injection pump - Google Patents
Injection pump Download PDFInfo
- Publication number
- CN203051252U CN203051252U CN 201320051099 CN201320051099U CN203051252U CN 203051252 U CN203051252 U CN 203051252U CN 201320051099 CN201320051099 CN 201320051099 CN 201320051099 U CN201320051099 U CN 201320051099U CN 203051252 U CN203051252 U CN 203051252U
- Authority
- CN
- China
- Prior art keywords
- entrance
- trunnion entrance
- distance
- mixing chamber
- jet pump
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000002347 injection Methods 0.000 title abstract description 6
- 239000007924 injection Substances 0.000 title abstract description 6
- 239000003921 oil Substances 0.000 description 14
- 239000012530 fluid Substances 0.000 description 10
- 230000002411 adverse Effects 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Images
Landscapes
- Jet Pumps And Other Pumps (AREA)
Abstract
The utility model discloses an injection pump which comprises an oil inlet pipe, a nozzle, a mixing chamber and a pressure diffusing pipe. The pressure diffusing pipe comprises a throat pipe inlet section and a diffusing pipe, wherein the throat pipe inlet section and the diffusing pipe are mutually communicated. The oil inlet pipe is communicated with the mixing chamber at one side of the mixing chamber. The throat pipe inlet section is communicated with the mixing chamber at the other side of the mixing chamber. One side is opposite to the other side. The nozzle is arranged at one end of the oil inlet pipe and located in the mixing chamber. A bus of an inner wall of the throat pipe inlet section is a smooth curve. The curve comprises a protruding portion protruding outwards and a concave portion recessed inwards. The protruding portion is connected with an inlet of the throat pipe inlet section. The concave portion is connected between an outlet of the throat pipe inlet section and the protruding portion and connected with the protruding portion. The phenomenon of cavitation in the throat pipe inlet section of the injection pump is light.
Description
Technical field
The utility model relates to the injection field of fluid, particularly, relates to a kind of jet pump.
Background technique
Jet pump can be used for spraying fluid.Usually, jet pump can be used as one of visual plant of lubrication system, its working principle is to utilize the effect of freely entrainmenting of a spot of high-pressure spray (pressure oil), oil around the high-pressure spray is sucked the next stage pipeline, and pressure oil can be with certain pressure to lubricating oil system and main oil pump fuel feeding after mixing with suction is oily.
Shown in Fig. 1 is a kind of common jet pump, this jet pump comprises oil inlet pipe 10, nozzle 20, mixing chamber 30 and diffuser pipe 40, this diffuser pipe 40 comprises trunnion entrance 41 and diffusing tube 42, described oil inlet pipe 10 is connected with this mixing chamber 30 in the bottom of described mixing chamber 30, described trunnion entrance 41 is connected with this mixing chamber 30 at the top of described mixing chamber 30, described nozzle 20 is arranged on an end of described oil inlet pipe 10, and is positioned at described mixing chamber 30 inside.As can be seen from Figure 1, the inwall of trunnion entrance has revolving structure, and the bus of trunnion entrance inwall is straightway.
But, when using this jet pump, at the trunnion entrance cavitation phenomenon appears easily, shortened the working life of jet pump.
Therefore, the cavitation phenomenon that how to reduce the trunnion entrance becomes the technical problem that related domain needs to be resolved hurrily.
The model utility content
The purpose of this utility model provides a kind of jet pump, and the trunnion entrance cavitation phenomenon of this jet pump is lighter.
To achieve these goals, the utility model provides a kind of jet pump, this jet pump comprises oil inlet pipe, nozzle, mixing chamber and diffuser pipe, described diffuser pipe comprises trunnion entrance and the diffusing tube that is interconnected, described oil inlet pipe is connected with this mixing chamber in a side of described mixing chamber, described trunnion entrance is connected with this mixing chamber at the opposite side of described mixing chamber, a described side is relative with described opposite side, described nozzle is arranged on an end of described oil inlet pipe, and be positioned at described mixing chamber inside, it is characterized in that, the bus of the inwall of described trunnion entrance is slick and sly curve, this curve comprises the lug boss of outside protrusion and the reentrant part that inwardly concaves, the entrance of described lug boss and described trunnion entrance joins, the female portion is connected between the outlet and described lug boss of described trunnion entrance, and joins with this lug boss.
Preferably, the bus of the inwall of described trunnion entrance is the part of cube curve.
Preferably, and the distance between the described entrance of described trunnion entrance for apart from satisfying following relation between the inside radius of the described trunnion entrance at x place and the described distance:
Preferably, and the distance between the described entrance of described trunnion entrance for apart from satisfying following relation between the inside radius of the described trunnion entrance at x place and the described distance:
Preferably, n is 7.
Preferably, the bus of the inwall of described trunnion entrance is the part of five power curves.
Preferably, and the distance between the described entrance of described trunnion entrance for apart from satisfying following relation between the inside radius of the described trunnion entrance at x place and the described distance:
Wherein, R
1Be the inside radius of the described ingress of described trunnion entrance, R
2Be the inside radius in the described outlet port of described trunnion entrance, L is the length of described trunnion entrance,
Preferably, and the distance between the described entrance of described trunnion entrance for apart from satisfying following relation between the inside radius of the described trunnion entrance at x place and the described distance:
Wherein, R
1Be the radius of the described ingress of described trunnion entrance, R
2Be the radius in the described outlet port of described trunnion entrance, L is the length of described trunnion entrance,
Preferably, the inside radius of the ingress of described trunnion entrance is 50mm to 70mm.
The bus that trunnion entrance by jet pump is set to inwall comprises after the lug boss that the entrance with the trunnion entrance joins, the fluid that enters described trunnion entrance obtains buffering to a certain degree, and, because it is steady that the internal diameter of trunnion entrance shrinks transition, shrinkage amplitude is little, be conducive to the attenuate fluid boundary layer, and reduced the flow resistance that fluid is subjected to, therefore, can not produce whirlpool and backflow in the ingress, thereby effectively reduced low pressure area and the adverse pressure gradient of the ingress of trunnion entrance, suppressed the generation of empty verbiage, reduced cavitation impingement.The reentrant part that joins with lug boss can improve flow rate of fluid, guarantees normally carrying out of injection.
Other feature and advantage of the present utility model will partly be described in detail in embodiment subsequently.
Description of drawings
Accompanying drawing is to be used to provide further understanding of the present utility model, and constitutes the part of specification, is used from explanation the utility model with following embodiment one, but does not constitute restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the schematic representation of the part of existing jet pump;
Fig. 2 is the schematic representation of the part of jet pump described in the utility model;
Fig. 3 is the bus of inwall of trunnion entrance of the jet pump of first kind of mode of execution of the utility model;
Fig. 4 is the bus of inwall of trunnion entrance of the jet pump of second kind of mode of execution of the utility model.
Description of reference numerals
10 oil inlet pipes, 20 nozzles
30 mixing chambers, 40 diffuser pipes
41 trunnion entrances, 42 diffusing tubes
41a entrance 41b outlet
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is elaborated.Should be understood that embodiment described herein only is used for description and interpretation the utility model, is not limited to the utility model.
As shown in Figure 2, a kind of jet pump of the utility model, this jet pump comprises oil inlet pipe 10, nozzle 20, mixing chamber 30 and diffuser pipe 40, diffuser pipe 40 comprises trunnion entrance 41 and the diffusing tube 42 that is interconnected, oil inlet pipe 10 is connected with this mixing chamber 30 in a side of mixing chamber 30, trunnion entrance 41 is connected with this mixing chamber 30 at the opposite side of mixing chamber 30, one side is relative with opposite side, nozzle 20 is arranged on an end of oil inlet pipe 10, and be positioned at mixing chamber 30 inside, it is characterized in that, the bus of the inwall of trunnion entrance 41 is slick and sly curve, and this curve comprises the lug boss of outside protrusion and the reentrant part that inwardly concaves, and the entrance 41a of lug boss and trunnion entrance 41 joins, reentrant part is connected between the outlet 41b and lug boss of trunnion entrance 41, and joins with this lug boss.
The bus that is set to inwall by the trunnion entrance 41 with jet pump comprises after the lug boss that the entrance 41a with trunnion entrance 41 joins, the fluid that enters described trunnion entrance obtains buffering to a certain degree, and, because it is steady that the internal diameter of trunnion entrance 41 shrinks transition, shrinkage amplitude is little, be conducive to the fluid boundary layer that attenuate enters trunnion entrance 41, and reduced the flow resistance that fluid is subjected to, therefore, can not produce whirlpool and backflow in the ingress, thereby effectively reduced low pressure area and the adverse pressure gradient of the ingress of trunnion entrance, suppressed the generation of empty verbiage, reduced cavitation impingement.The reentrant part that joins with lug boss can improve flow rate of fluid, guarantees normally carrying out of injection.
One skilled in the art will appreciate that " bus " described herein refers on the longitudinal section of trunnion entrance 41 shape of the inwall of trunnion entrance 41.
A lot of curves all comprise lug boss and the reentrant part that joins, and for example, the bus of the inwall of trunnion entrance 41 is the part of cube curve.
As first kind of mode of execution of the present utility model, as shown in Figure 3, and the distance between the entrance 41a of trunnion entrance 41 is for apart from the inside radius R of the trunnion entrance 41 at x place and apart from satisfying following relation between the x:
As can be known from Fig. 3, the cube curve shown in the figure comprises lug boss and reentrant part.And, the curve shown in Fig. 3 is comparatively simple as the trunnion entrance processing of inwall bus, obtain easily.
Similarly, and the distance between the entrance 41a of trunnion entrance 41 for apart from the inside radius R of the trunnion entrance 41 at x place and apart from satisfying following relation between the x:
Preferably, n can be 7.
As second kind of mode of execution of the present utility model, the bus of the inwall of trunnion entrance 41 can also be the part of five power curves.
As shown in Figure 4, and the distance between the entrance 41a of trunnion entrance 41 for apart from the inside radius R of the trunnion entrance 41 at x place and apart from satisfying following relation between the x:
Wherein, R
1Be the inside radius at the entrance 41a place of trunnion entrance 41, R
2Be the inside radius at the outlet 41b place of trunnion entrance 41, L is the length of trunnion entrance 41,
In addition, and the distance between the entrance 41a of trunnion entrance 41 for apart from the inside radius R of the trunnion entrance 41 at x place and apart from satisfying following relation between the x:
Usually, the inside radius R of the ingress of trunnion entrance
1For 50mm to 70mm.
Below describe preferred implementation of the present utility model by reference to the accompanying drawings in detail; but; the utility model is not limited to the detail in the above-mentioned mode of execution; in technical conceive scope of the present utility model; can carry out multiple simple variant to the technical solution of the utility model, these simple variant all belong to protection domain of the present utility model.
Need to prove that in addition each the concrete technical characteristics described in above-mentioned embodiment under reconcilable situation, can make up by any suitable manner.For fear of unnecessary repetition, the utility model is to the explanation no longer separately of various possible compound modes.
In addition, also can carry out combination in any between the various mode of execution of the present utility model, as long as it is without prejudice to thought of the present utility model, it should be considered as content disclosed in the utility model equally.
Claims (9)
1. jet pump, this jet pump comprises oil inlet pipe (10), nozzle (20), mixing chamber (30) and diffuser pipe (40), described diffuser pipe (40) comprises trunnion entrance (41) and the diffusing tube (42) that is interconnected, described oil inlet pipe (10) is connected with this mixing chamber (30) in a side of described mixing chamber (30), described trunnion entrance (41) is connected with this mixing chamber (30) at the opposite side of described mixing chamber (30), a described side is relative with described opposite side, described nozzle (20) is arranged on an end of described oil inlet pipe (10), and be positioned at described mixing chamber (30) inside, it is characterized in that, the bus of the inwall of described trunnion entrance (41) is slick and sly curve, this curve comprises the lug boss of outside protrusion and the reentrant part that inwardly concaves, the entrance (41a) of described lug boss and described trunnion entrance (41) joins, the female portion is connected between the outlet (41b) and described lug boss of described trunnion entrance (41), and joins with this lug boss.
2. jet pump according to claim 1 is characterized in that, the bus of the inwall of described trunnion entrance (41) is the part of cube curve.
3. jet pump according to claim 2, it is characterized in that, and described trunnion entrance (41) described goes into to satisfy following relation between the inside radius (R) of the described trunnion entrance (41) that the distance between (41a) locates for distance (x) and the described distance (x):
4. jet pump according to claim 1, it is characterized in that, and the distance between the described entrance (41a) of described trunnion entrance (41) is for satisfying following relation between the inside radius (R) of the described trunnion entrance (41) located of distance (x) and the described distance (x):
5. jet pump according to claim 4 is characterized in that, n is 7.
6. jet pump according to claim 1 is characterized in that, the bus of the inwall of described trunnion entrance (41) is the part of five power curves.
7. jet pump according to claim 6, it is characterized in that, and described trunnion entrance (41) described goes into to satisfy following relation between the inside radius (R) of the described trunnion entrance (41) that the distance between (41a) locates for distance (x) and the described distance (x):
8. jet pump according to claim 6, it is characterized in that, and described trunnion entrance (41) described goes into to satisfy following relation between the inside radius (R) of the described trunnion entrance (41) that the distance between (41a) locates for distance (x) and the described distance (x):
9. according to any described jet pump in the claim 1 to 8, it is characterized in that the inside radius (R of the ingress of described trunnion entrance
1) be 50mm to 70mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320051099 CN203051252U (en) | 2013-01-30 | 2013-01-30 | Injection pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320051099 CN203051252U (en) | 2013-01-30 | 2013-01-30 | Injection pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203051252U true CN203051252U (en) | 2013-07-10 |
Family
ID=48734210
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320051099 Expired - Lifetime CN203051252U (en) | 2013-01-30 | 2013-01-30 | Injection pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203051252U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103075373A (en) * | 2013-01-30 | 2013-05-01 | 中国神华能源股份有限公司 | Spraying pump |
-
2013
- 2013-01-30 CN CN 201320051099 patent/CN203051252U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103075373A (en) * | 2013-01-30 | 2013-05-01 | 中国神华能源股份有限公司 | Spraying pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130710 Effective date of abandoning: 20160608 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |