CN105626582A - Centrifugal boosting pump with pressure sensor and mounting base - Google Patents
Centrifugal boosting pump with pressure sensor and mounting base Download PDFInfo
- Publication number
- CN105626582A CN105626582A CN201610144665.9A CN201610144665A CN105626582A CN 105626582 A CN105626582 A CN 105626582A CN 201610144665 A CN201610144665 A CN 201610144665A CN 105626582 A CN105626582 A CN 105626582A
- Authority
- CN
- China
- Prior art keywords
- pedestal
- volute casing
- impeller
- afterburning
- pressure transmitter
- 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.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/007—Details, component parts, or accessories especially adapted for liquid pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2270/00—Control
- F05D2270/30—Control parameters, e.g. input parameters
- F05D2270/301—Pressure
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The invention provides a centrifugal boosting pump with a pressure sensor and a mounting base, belonging to the field of cavitation monitoring of aero-engine boosting fuel systems. The centrifugal boosting pump comprises an impeller and a shell, wherein the shell comprises a spiral housing and a diffusion tube; the impeller is arranged in the spiral housing; the diffusion tube is communicated with the spiral housing; the inner wall of the diffusion tube is provided with a conical sleeve, and a separating tongue is formed at the junction of the spiral housing and the conical sleeve; and the centrifugal boosting pump is also characterized by also comprising a pressure sensor and a sensor mounting base, wherein the sensor mounting base is integrally arranged on the wall surface of the spiral housing at the downstream of the separating tongue, and the pressure sensor is mounted on the shell of the centrifugal boosting pump through the sensor mounting base. By using the centrifugal boosting pump with the pressure sensor and the mounting base, the problem for mounting the pressure sensor in a cavitation monitoring system can be effectively solved.
Description
Technical field
The invention belongs to aeroengine thrust augmentation prime the fuel system cavitation monitoring field, in particular to a kind of band pressure sensor and the afterburning centrifugal pump structure design installing pedestal, this kind of structure design can effectively solve the installation problem of pressure transmitter in cavitation monitoring system.
Background technology
Afterburning impeller pump is the important parts of aeroengine thrust augmentation prime the fuel system, and its function provides the fuel oil with certain pressure and flow to afterburning prime the fuel system. Existing afterburning centrifugal pump structure as shown in Figure 1, is made up of impeller 1 and housing 2 usually. Housing 2 comprises volute casing 3 and diffuser tube 4. Impeller 1 adopts radial straight impeller, and volute casing 3 adopts section form to be semicircle concentric spiral case, and impeller 1 is arranged in volute casing 3. Diffuser tube 4 is cone diffuser tube, and diffuser tube 4 is connected with volute casing 3. Inwall at diffuser tube 4 is provided with taper sleeve pipe 5. Being formed every tongue 6 at the boundary place of volute casing 3 and taper sleeve pipe 5, the installation angle every tongue 6 is 43 ��. Being provided with the centrifugal pump inlet 7 concentric with impeller in volute casing 3 center, the outlet of diffuser tube 4 is outlet of centrifugal pump 8, and it is impeller outlet 9 that the blade outer rim of impeller rotates the skeletal lines formed. Housing 2, impeller outlet 9 and pump discharge 8 define room, chamber 10. The working process of reinforcing impeller pump is: fuel oil enters afterburning impeller pump from pump intake 7, and the high speed rotating through impeller 1 obtains kinetic energy and pressure energy, throws away from impeller outlet 9 and enters room, chamber 10, derives by diffuser tube 4 and enters pipeline road. In use, has there is the cavitation impingement of pit, pit shape at volute casing inner-wall surface near tongue 6 downstream in afterburning impeller pump, and it destroys region is cavitation impingement district 11. Cavitation impingement district 11 scope be taking every tongue 6 installation angle (43 ��) as starting point, be rotated counterclockwise 9 �� to the shell wall side being rotated counterclockwise 27 ��. Cavitation impingement is owing to cavitation causes shell wall side metallic substance to degrade. Cavitation refers to that fuel oil is in flow process, and when local static pressure is reduced to the saturated vapor pressure of fuel oil, in fuel liquid, gas core burst grows up into cavity. When cavity is crumbled and fall, generation shockwave and microjet act on shell wall side, and shell wall side is caused cavitation impingement. Penetrance hole can be formed by shell wall side at place of cavitation impingement district 11 when cavitation corrosion is serious, cause fuel leakage, the operating safety of serious threat aircraft engine.
At present, also being difficult to accomplish accurate prediction to the cavitation phenomenon of impeller pump in theory, the prediction best way of cavitation sets up cavitation monitoring system, and the running status of impeller pump is carried out Real-Time Monitoring. The monitoring of the cavitation of impeller pump has been carried out big quantifier elimination by lot of domestic and international scholar, and the method for cavitation monitoring mainly contains: high speed video process, measurement Pressure fluctuation method and measurement vibratory noise method etc. Considering the restriction of afterburning impeller pump working conditions, measuring Pressure fluctuation method is compare feasible cavitation monitoring method, namely at the correct position setting pressure sensor of afterburning impeller pump, monitors the cavitation of afterburning impeller pump by measuring pump flow field pressure pulsation. Due to the restriction by former afterburning centrifugal pump structure, pressure transmitter can not directly be installed on afterburning centrifugal pump casing. It is therefore necessary to former afterburning centrifugal pump structure is carried out Curve guide impeller, with the installation of applicable pressure transmitter.
Summary of the invention
It is an object of the invention to the cavitation monitoring problem for afterburning impeller pump, propose a kind of band pressure sensor and the afterburning impeller pump of pedestal is installed, pressure transmitter can directly be installed on to be installed on pedestal, solves the installation problem of pressure transmitter in cavitation monitoring system.
The present invention proposes a kind of belt sensor and installs the afterburning impeller pump of pedestal, and this reinforcing impeller pump comprises impeller and housing, and housing comprises volute casing and diffuser tube; Impeller is arranged in volute casing; Diffuser tube is connected with volute casing; Inwall at diffuser tube is provided with taper sleeve pipe, is formed every tongue at the boundary place of volute casing and taper sleeve pipe; It is characterized in that, also comprise a pressure transmitter and sensor and install pedestal, sensor is installed pedestal and is wholely set, on sublingual trip volute casing shell wall side, pressure transmitter is installed pedestal by pressure transmitter and is arranged on afterburning centrifugal pump casing.
The invention solves the installation problem of pressure transmitter in cavitation monitoring system. The running status of afterburning impeller pump can be carried out Real-Time Monitoring, ensure that the operating safety of aircraft engine.
Accompanying drawing explanation
Fig. 1 is former afterburning centrifugal pump structure schematic diagram.
Fig. 2 is a belt sensor of the present invention and the afterburning centrifugal pump structure schematic diagram of installation pedestal.
Fig. 3 is the scheme of installation of pressure transmitter.
In figure: 1. impeller; 2. housing; 3. volute casing; 4. diffuser tube; 5. taper sleeve pipe; 6. every tongue; 7. pump intake; 8. pump discharge; 9. impeller outlet; 10. room, chamber; 11. cavitation impingement districts; 12. installation pedestals; 13 erecting stages; 14. open holess; 15. pressure taps; 16. pressure taps; 17. pressure transmitters; 18. 6 sides; 19.o type rubber seal; 20. red copper pads.
Embodiment
The afterburning centrifugal pump structure drawings and Examples of a kind of band pressure sensor that the present invention proposes and installation pedestal are described as follows further:
The present invention proposes a kind of belt sensor and the afterburning impeller pump example structure of pedestal is installed, as shown in Figure 2. This reinforcing impeller pump is the improvement to original afterburning centrifugal pump structure, same with original afterburning impeller pump, is made up of impeller 1 and housing 2, and housing 2 comprises volute casing 3 and diffuser tube 4. Impeller 1 adopts radial straight impeller, and volute casing 3 adopts section form to be semicircle concentric spiral case, and impeller 1 is arranged in volute casing 3. Diffuser tube 4 is cone diffuser tube, and diffuser tube 4 is connected with volute casing 3. Inwall at diffuser tube 4 is provided with taper sleeve pipe 5. Being formed every tongue 6 at the boundary place of volute casing 3 and taper sleeve pipe 5, the installation angle every tongue 6 is 43 ��. Being provided with the pump intake 7 concentric with impeller in volute casing 3 center, the outlet of diffuser tube 4 is pump discharge 8, and it is impeller outlet 9 that the blade outer rim of impeller rotates the skeletal lines formed. Housing 2, impeller outlet 9 and pump discharge 8 define room, chamber 10.
The improvements of the present invention are: increase by a pressure transmitter 17, are being wholely set sensor installation pedestal 12 every tongue 6 downstream volute casing shell wall side. Pressure transmitter 17 is installed pedestal 12 by pressure transmitter and is arranged on afterburning centrifugal pump casing 2.
Pedestal 12 installed by the pressure transmitter of the present embodiment, the open holes 14 comprise erecting stage 13, opening on erecting stage 13 and pressure tap 15. The axis of pressure tap 15 and the intersection point in volute casing 3 inner walls face are pressure tap 16. Owing to former afterburning centrifugal pump casing wall thickness is thinner, and volute casing 3 housing end surface shape is semicircle, and pressure transmitter cannot directly be installed on volute casing housing. Therefore, carry out improving thickening process every tongue 6 downstream volute casing housing to original afterburning impeller pump, form an erecting stage 13. Erecting stage 13 is vertically opened a circular mounting hole 14. Open holes 14 is internal thread hole, and hole depth is 7mm, and aperture equals the caliber of the installation threaded pipe of pressure transmitter. In open holes 14, the vertical circular pressure tap 15 that runs through shell wall side is opened in lower section, and its aperture is 2mm, hole depth 4mm. Open holes 14 and pressure tap 15 are coaxial. The volute casing inner walls face place that the position of pressure tap 16 should select cavitation erosion in cavitation impingement district 11 the most serious. By the measurement of the afterburning impeller pump cavitation impingement that cavitation is impaired, it is determined that pressure tap 16 position is arranged in the cross section of volute casing 2, taking every tongue 6 installation angle (43 ��) as starting point, be rotated counterclockwise on the volute casing inner walls face of 20 ��.
The pressure transmitter of the present embodiment is installed pedestal 12 and is also comprised o type rubber seal 19 and red copper pad 20.
As shown in Figure 3, pressure transmitter 17 is installed vertically on erecting stage 13 the installation mode of pressure transmitter. Pressure transmitter 17 is by installing screw thread spinning in open holes 14. The end face o type rubber seal 19 of six sides 18 of erecting stage 13 and pressure transmitter 17 seals, and the probe tip face red copper pad 20 at open holes 14 and pressure transmitter 17 seals, and prevents fuel leakage.
Claims (5)
1. an afterburning impeller pump for belt sensor and installation pedestal, this reinforcing impeller pump comprises impeller and housing, and housing comprises volute casing and diffuser tube; Impeller is arranged in volute casing; Diffuser tube is connected with volute casing; Inwall at diffuser tube is provided with taper sleeve pipe, is formed every tongue at the boundary place of volute casing and taper sleeve pipe; It is characterized in that, also comprise a pressure transmitter and sensor and install pedestal, sensor is installed pedestal and is wholely set, on sublingual trip volute casing shell wall side, pressure transmitter is installed pedestal by pressure transmitter and is arranged on afterburning centrifugal pump casing.
2. as claimed in claim 1 belt sensor and install pedestal afterburning impeller pump, it is characterized in that, described pressure transmitter installs that pedestal comprises erecting stage, the open holes opened on erecting stage and pressure tap, the axis of pressure tap and the intersection point in volute casing inner walls face are pressure tap, and described pressure transmitter is placed in the open holes of erecting stage.
3. as claimed in claim 2 belt sensor and install pedestal afterburning impeller pump, it is characterised in that, open holes is internal thread hole, and hole depth is 7mm, and aperture equals the caliber of the installation threaded pipe of pressure transmitter; In open holes, the vertical circular pressure tap that runs through shell wall side is opened in lower section, and its aperture is 2mm; Open holes and pressure tap are coaxial.
4. as claimed in claim 1 belt sensor and install pedestal afterburning impeller pump, it is characterized in that, the position of described pressure tap is selected at the most serious volute casing inner walls face place of cavitation erosion, it is arranged in the cross section of volute casing, taking every tongue 6 installation angle as starting point, be rotated counterclockwise on the volute casing inner walls face of 20 ��.
5. belt sensor as described in as arbitrary in claim 1-4 and install the afterburning impeller pump of pedestal, it is characterised in that, described pressure transmitter is installed pedestal and is also comprised o type rubber seal and red copper pad; O type rubber seal is placed between erecting stage and six square end faces of pressure transmitter, and red copper pad is placed between open holes and the probe tip face of pressure transmitter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610144665.9A CN105626582A (en) | 2016-03-14 | 2016-03-14 | Centrifugal boosting pump with pressure sensor and mounting base |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610144665.9A CN105626582A (en) | 2016-03-14 | 2016-03-14 | Centrifugal boosting pump with pressure sensor and mounting base |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105626582A true CN105626582A (en) | 2016-06-01 |
Family
ID=56041824
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610144665.9A Pending CN105626582A (en) | 2016-03-14 | 2016-03-14 | Centrifugal boosting pump with pressure sensor and mounting base |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105626582A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114718893A (en) * | 2022-03-26 | 2022-07-08 | 天津大学 | Mounting structure of turbocharger surface sensor |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1092305A1 (en) * | 1983-01-11 | 1984-05-15 | Пермский политехнический институт | Centrifugal turbine |
| US5286162A (en) * | 1993-01-04 | 1994-02-15 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Method of reducing hydraulic instability |
| CN101435437A (en) * | 2008-12-18 | 2009-05-20 | 中国农业大学 | Centrifugal pump body |
| CN105134618A (en) * | 2015-09-10 | 2015-12-09 | 中国农业大学 | Centrifugal pump regulating method based on pressure pulsation time-frequency characteristic analysis |
| CN205654605U (en) * | 2016-03-14 | 2016-10-19 | 清华大学 | Take afterburning centrifugal pump of pressure sensor and mounting base |
-
2016
- 2016-03-14 CN CN201610144665.9A patent/CN105626582A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1092305A1 (en) * | 1983-01-11 | 1984-05-15 | Пермский политехнический институт | Centrifugal turbine |
| US5286162A (en) * | 1993-01-04 | 1994-02-15 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Method of reducing hydraulic instability |
| CN101435437A (en) * | 2008-12-18 | 2009-05-20 | 中国农业大学 | Centrifugal pump body |
| CN105134618A (en) * | 2015-09-10 | 2015-12-09 | 中国农业大学 | Centrifugal pump regulating method based on pressure pulsation time-frequency characteristic analysis |
| CN205654605U (en) * | 2016-03-14 | 2016-10-19 | 清华大学 | Take afterburning centrifugal pump of pressure sensor and mounting base |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114718893A (en) * | 2022-03-26 | 2022-07-08 | 天津大学 | Mounting structure of turbocharger surface sensor |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160601 |