CN206290454U - A kind of micro- lift vertical axial-flow pump lift measurement apparatus - Google Patents
A kind of micro- lift vertical axial-flow pump lift measurement apparatus Download PDFInfo
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- CN206290454U CN206290454U CN201621365146.7U CN201621365146U CN206290454U CN 206290454 U CN206290454 U CN 206290454U CN 201621365146 U CN201621365146 U CN 201621365146U CN 206290454 U CN206290454 U CN 206290454U
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- flow pump
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- 238000005259 measurement Methods 0.000 title claims abstract description 48
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 20
- 238000009530 blood pressure measurement Methods 0.000 claims description 11
- 230000001808 coupling Effects 0.000 claims description 9
- 238000010168 coupling process Methods 0.000 claims description 9
- 238000005859 coupling reaction Methods 0.000 claims description 9
- 238000009434 installation Methods 0.000 claims description 9
- 239000007787 solid Substances 0.000 abstract description 4
- 239000002184 metal Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 210000003128 Head Anatomy 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 230000000875 corresponding Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002093 peripheral Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Abstract
The utility model is related to a kind of micro- lift vertical axial-flow pump lift measurement apparatus.This measurement apparatus includes axial-flow pump and water tank, and first pressure sensor, the first valve, auxiliary pump, the second valve are provided with the pipeline between the pump discharge and water tank of the axial-flow pump；Flowmeter is additionally provided with pipeline between the pump discharge and water tank of the axial-flow pump；The inlet and outlet of the auxiliary pump is respectively arranged with second pressure sensor and the 3rd pressure sensor.The present apparatus by setting up auxiliary pump in the pipe-line system of axial-flow pump, the resistance of pipe-line system when effectively overcoming experiment, thus adequately measure micro- lifting pump lift and characteristic curve of pipeline provide solid experimental rig platform.Being measured using micro- lift of the vertical axial-flow pump of measurement apparatus in the utility model can effectively reduce measurement error, improve the degree of accuracy of measurement result.
Description
Technical field
The utility model belongs to axial-flow pump lift field of measuring technique, and in particular to a kind of micro- lift vertical axial-flow pump lift
Measurement apparatus.
Background technology
Liquid is discharged after pump installation obtains energy along export pipeline, due to pipeline drag characteristic in itself, when pump dress
When putting the liquid of discharge different flow, it needs to overcome different on-way resistances.Particularly, for the pipeline of a fixed structure,
Bigger by flow, the friction loss of pipeline is also bigger, conversely then smaller.Existing lift experimental rig is directed to raise
Journey is more than several meters of pump installation, and it is calculated corresponding under certain flow by the inlet and outlet pressure of direct measurement pump installation
Lift, now, the pipe resistance of pipe-line system influences very little for the measurement of lift, and the linear loss of pipeline can relative to the lift of pump
To ignore, the problem for overcoming pipe to hinder in also being run regardless of pump installation.And micro- lifting pump is during operation, due to
Lift is low in itself for pump, it is difficult to overcome the on-way resistance of pipeline, and especially during big flow operating mode, pipe resistance is dramatically increased, then lift
Measurement error is bigger, it could even be possible to there is the situation that micro- lifting pump cannot work.Therefore when the lift of micro- lifting pump is measured,
Influence of the pipe resistance to lift measurement can not be ignored.But the lift and characteristic curve of pipeline of micro- lifting pump how are accurately measured,
Just into the technical barrier that those skilled in the art are urgently to be resolved hurrily.
The content of the invention
In order to solve the above-mentioned technical problem, the utility model provides a kind of micro- lift vertical axial-flow pump lift measurement dress
Put, the present apparatus by setting up auxiliary pump in the pipe-line system of axial-flow pump, the resistance of pipe-line system when effectively overcoming experiment,
So as to the lift and characteristic curve of pipeline that adequately measure micro- lifting pump provide solid experimental rig platform.
In order to realize the purpose of this utility model, the utility model employs following technical scheme：
A kind of micro- lift vertical axial-flow pump lift measurement apparatus, including axial-flow pump and water tank, the pump discharge of the axial-flow pump
First pressure sensor, the first valve, auxiliary pump, the second valve are provided with pipeline between water tank；The axial-flow pump
Flowmeter is additionally provided with pipeline between pump discharge and water tank；The inlet and outlet of the auxiliary pump is respectively arranged with second
Pressure sensor and the 3rd pressure sensor.
Preferably, the range of flow of the auxiliary pump is adapted with the range of flow of axial-flow pump, the lift of the auxiliary pump
Higher than the lift of axial-flow pump.
Preferably, the present apparatus also includes motor, and shaft coupling, the shaft coupling are provided between the motor and the axial-flow pump
Torquemeter is provided with device.
Further, the shaft coupling includes the motor shaft sleeve pipe being set on motor output shaft, also including being arranged on pump
Pump shaft sleeve pipe on axle, the two ends of the torquemeter connect motor shaft sleeve pipe and pump shaft sleeve pipe respectively, and the torquemeter is by solid
Determine frame to be fixed together with the support frame of fixed motor.
Preferably, the first pressure sensor is arranged on the pump discharge straight length of axial-flow pump by device for pressure measurement
On.
Further, the device for pressure measurement includes two pieces be installed in successively vertically on the pump discharge straight length
Positioning baffle, is provided with the measurement sleeve pipe being set on pump discharge straight length between two pieces of positioning baffles, the measurement sleeve pipe and
Measured zone is enclosed jointly between two pieces of positioning baffles；It is provided with for laying first pressure sensor on the measurement sleeve pipe
Bearing；The pump discharge straight length is being provided with pressure tap on the pipe shaft in measured zone；Positioning gear in top
Steam vent is provided with the top of plate or the measurement sleeve pipe, plug is provided with steam vent.
Further, the pressure tap is uniformly distributed along the circumference of the pump discharge straight length, and the pressure tap
Hole center is in same level with the hole center of the bearing；
Further, the axial cross section product in measured zone described in ring-type is more than four the four of the gross area of pressure tap
Times.
In order to avoid the fluid pressure fluctuation in ring shaped measuring region, the axial cross section in ring shaped measuring region need to be ensured
Product is more than four four times of the gross area of pressure tap 83.
Preferably, the pipe interior diameter of the pump discharge straight length is D, and the pipe range of the pump discharge straight length is more than 4D, institute
The distance between the installation site of first pressure sensor and the pump discharge of axial-flow pump are stated more than 2D.
Preferably, the auxiliary pump is pipeline pump.
The beneficial effects of the utility model are：
1) the utility model has additional auxiliary pump in the pipe-line system of axial-flow pump, and the auxiliary pump is used in test gram
Take the resistance of pipe-line system.By adjusting the valve of auxiliary pump rear and front end during experiment, you can accurately measure and obtain vertical shaft
The pipe resistance characteristic curve of pipe-line system during stream pump off-duty.After vertical-type axial-flow pump and auxiliary pump are operated together, you can survey
Head curve when obtaining axial-flow pump with auxiliary pump cooperation, the head curve that will be measured again and the pipe-line system for having measured
Pipe resistance characteristic curve is combined, you can to obtain the real lift of vertical-type axial-flow pump exactly.Therefore, using in the utility model
Micro- lift of the vertical axial-flow pump of measurement apparatus measure and can effectively reduce measurement error, improve the standard of measurement result
Exactness.
2) moment of torsion when the utility model is operated using torquemeter measurement axial-flow pump, can exactly calculate the axle of pump installation
Power；The utility model installs first pressure sensor on the pump discharge straight length of axial-flow pump, can measure and obtain axial-flow pump
Outlet pressure.The utility model also connects metal hose in the port of export of auxiliary pump, and the metal hose is used to adjust auxiliary
The distance between pump discharge and the 3rd valve.By setting torquemeter, first pressure sensor, the utility model can also be measured
Obtain the efficiency curve and shaft power curve of axial-flow pump.
3) the utility model sets steam vent by the measurement sleeve pipe of device for pressure measurement, efficiently solves measurement
The problem that gas cannot be drained in region；Steam vent able to turn on or off is individually opened up by measurement sleeve pipe top end, so as to realize
The autonomous of gas drains function in measured zone, and the bubble that finally avoid in measured zone does to pressure measuring service
Disturb, the measurement data that it is obtained is naturally more accurate.Specifically, during experiment, the liquid in pump discharge straight length is via pressure measurement
Hole and enter ring shaped measuring region, now under action of hydraulic force, gas in ring shaped measuring region is escaped via steam vent；Treat
The steam vent is sealed again after draining the gas in ring shaped measuring region, you can micro- lift is carried out by first pressure sensor and is pumped out
The accurate measurement of mouth pressure.
4) bearing being made up of round steel pipe is passed here as the installation carrier and first pressure of first pressure sensor
Being connected fixture and using between sensor and measurement sleeve pipe.On the one hand bearing realizes two by the solid welding between measurement sleeve pipe
The affixed function of person；On the other hand twisting for first pressure sensor is then realized by the large aperture section at the poroid tube chamber of itself ladder
Tight operation.When using, the axis of bearing and the axis of pressure tap are in same level, by small-bore section of bearing come
Ensure the accurate transmission function of hydraulic pressure.
5) the utility model is provided with the pressure tap that four road uniform rings are set around pump discharge straight length, can at least ensure pressure tap
The harmony of water side peripheral region pressure distribution, then coordinate the round steel pipe being at same level with pressure measurement axially bored line to be made
Bearing, you can the measurement precision of effective lifting first pressure sensor.
Brief description of the drawings
Fig. 1 is the attachment structure schematic diagram of motor and axial-flow pump.
Fig. 2 is the structural representation of the device for pressure measurement on pump discharge straight length.
Fig. 3 is the A-A generalized sections of Fig. 2.
Fig. 4 is structural representation of the present utility model.
Fig. 5 is the front view of Fig. 4.
Fig. 6 is the top view of Fig. 4.
The implication marked in figure is as follows：
1- motor 2- support frame 3- motor shaft sleeve pipe 4- fixed mount 5- torquemeters
6- pump shaft sleeve pipe 7- axial-flow pump 8- pump discharge straight length 81- adpting flanges
82-90 ° of bend pipe 83- pressure tap 9- first pressure sensor 91- bearing
92- measures sleeve pipe 921- steam vent 922- plug 923- mounting holes
93- positioning baffles 10/12- straight tube 11- flowmeters 13/15- straight tubes long
14- the first valve 16- second pressure sensor 17- auxiliary pumps
Pressure sensor 19- metal hoses 20- the second valve 21- water tanks of 18- the 3rd
Specific embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the utility model, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment for being obtained, belongs to the scope of the utility model protection.
As Figure 4-Figure 6, a kind of micro- lift vertical axial-flow pump lift measurement apparatus, including axial-flow pump 7 and water tank 21, it is described
Be provided with pipeline between the pump discharge and water tank 21 of axial-flow pump 7 first pressure sensor 9, the first valve 14, auxiliary pump 17,
Second valve 19；Flowmeter 11 is additionally provided with pipeline between the pump discharge and water tank 21 of the axial-flow pump 7；The auxiliary pump
17 inlet and outlet is respectively arranged with the pressure sensor 18 of second pressure sensor 16 and the 3rd.The stream of the auxiliary pump 17
Amount scope is adapted with the range of flow of axial-flow pump 7, the lift of the lift higher than axial-flow pump 7 of the auxiliary pump 17.The present embodiment
In the auxiliary pump 17 be pipeline pump.
As shown in figure 1, the present apparatus also includes motor 1, shaft coupling, institute are provided between the motor 1 and the axial-flow pump 7
State and be provided with shaft coupling torquemeter 5.The shaft coupling includes the motor shaft sleeve pipe 3 being set on motor output shaft, also includes
The pump shaft sleeve pipe 6 on pump shaft is arranged on, the two ends of the torquemeter 5 connect motor shaft sleeve pipe 3 and pump shaft sleeve pipe 6 respectively, described
Torquemeter 5 is fixed together by fixed mount 4 with the support frame 2 of fixed motor 1.
As shown in figure 4, being partially installed on open water tank 21 by the whole makeup of the imports that motor 1 and vertical-type axial-flow pump 7 are constituted
Interior, there is coffin the dividing plate lower section in the middle of water tank 21, and this coffin is easy to water energy stabilization to be back to entering for vertical-type axial-flow pump 7
At mouthful.The axial-flow pump 7 is arranged on the bottom of water tank 21, and support frame 2 is arranged on the top of axial-flow pump 7, as shown in figure 1, motor 1 is pacified
On support frame 2, motor shaft sleeve pipe 3 is connected with the output shaft of motor, and torquemeter 5 is connected with motor shaft sleeve pipe 3, two pieces of fixations
The base plate of frame 4 is fixed on support frame 2, and torquemeter 5 is clamped in centre by the side plate of fixed mount 4, and the side plate of fixed mount 4 passes through
Screw tightens together with torquemeter 5.U-type groove is provided with the base plate of the fixed mount 4, in order to the position of mobile regulation side plate
Put, side plate is adjacent to torquemeter 5 during installation and set；U-type groove is also provided with the side plate of fixed mount 4, is easy to tighten screw.Torquemeter
5 lower sections are pump shaft sleeve pipes 6, and pump shaft sleeve pipe 6 is connected with the pump shaft of axial-flow pump 7.The length of the pump shaft sleeve pipe 6 can set compared with
It is long, to ensure the home that torquemeter 5 is located above the water surface.
As shown in figure 4, the first pressure sensor 9 is straight by pump discharge that device for pressure measurement is arranged on axial-flow pump 7
On pipeline section 8.
As shown in Figure 2,3, the device for pressure measurement includes being installed in successively vertically on the pump discharge straight length 8
Two pieces of positioning baffles 93, are provided with the measurement sleeve pipe 92 being set on pump discharge straight length 8 between two pieces of positioning baffles 93, described
Measured zone is enclosed jointly between measurement sleeve pipe 92 and two pieces of positioning baffles 93；It is provided with for pacifying on the measurement sleeve pipe 92
Put the bearing 91 of first pressure sensor 9；The pump discharge straight length 8 is being provided with pressure measurement on the pipe shaft in measured zone
Hole 83；The top of the measurement sleeve pipe 92 is provided with steam vent 921, and plug 922 is provided with steam vent 921.
As shown in Figure 2,3, four pressure taps are uniformly distributed along the circumference of the pump discharge straight length, and the pressure measurement
Kong Kong centers are in same level with the hole center of the bearing；Axial cross section area in measured zone described in ring-type
More than four the four of the total cross sectional area of pressure tap times.
In order to avoid the fluid pressure fluctuation in ring shaped measuring region is to the adverse effect of pressure measxurement, need to ensure that ring-type is surveyed
Axial cross section area in amount region is more than four four times of the total cross sectional area of pressure tap 83.
As shown in figure 4, the outlet lower section of axial-flow pump 7 is pump discharge straight tube of the segment length more than 4D (D is pipe interior diameter)
Section 8, first pressure sensor 9 is installed on pump discharge straight length 8, and position and the pump discharge of first pressure sensor 9 distance
It is 2D；Straight tube long 10 is connected by 90 ° of bend pipes 82 with pump discharge straight length 8, and the length of straight tube long 10 is more than 4D, and flowmeter 11 is pacified
Mounted in the end of straight tube long 10, the length of straight tube long 12 of the rear end of flowmeter 11 is also greater than 4D；First valve 14 is arranged on flowmeter
11 outlet rear end, the length of straight tube 13 of the import leading portion of the first valve 14 is 2.5D, flow and the vertical-type axial-flow pump 7 of auxiliary pump 17
Flow quite, auxiliary pump 17 is arranged on the rear end of the first valve 14, and the import and export of auxiliary pump 17 are respectively provided with a pressure and pass
Sensor, the respectively pressure sensor 18 of second pressure sensor 16 and the 3rd, the straight tube 15 of the import leading portion of the auxiliary pump 17 are grown
It is 4D to spend, and outlet section is connected by metal hose 19 with second valve 20 of pump discharge is controlled, and second valve 20 goes out
Stretch into water tank 21 at mouth end.
Claims (10)
1. a kind of micro- lift vertical axial-flow pump lift measurement apparatus, including axial-flow pump (7) and water tank (21), it is characterised in that：Institute
State and first pressure sensor (9), the first valve are provided with the pipeline between the pump discharge of axial-flow pump (7) and water tank (21)
(14), auxiliary pump (17), the second valve (19)；Also set on pipeline between the pump discharge and water tank (21) of the axial-flow pump (7)
It is equipped with flowmeter (11)；The inlet and outlet of the auxiliary pump (17) is respectively arranged with second pressure sensor (16) and the 3rd
Pressure sensor (18).
2. a kind of micro- lift vertical axial-flow pump lift measurement apparatus as claimed in claim 1, it is characterised in that：The auxiliary pump
(17) range of flow is adapted with the range of flow of axial-flow pump (7), and the lift of the auxiliary pump (17) is higher than axial-flow pump (7)
Lift.
3. a kind of micro- lift vertical axial-flow pump lift measurement apparatus as claimed in claim 2, it is characterised in that：The present apparatus is also wrapped
Motor (1) is included, shaft coupling is provided between the motor (1) and the axial-flow pump (7), torquemeter is provided with the shaft coupling
(5)。
4. a kind of micro- lift vertical axial-flow pump lift measurement apparatus as claimed in claim 3, it is characterised in that：The shaft coupling
Including the motor shaft sleeve pipe (3) being set on motor output shaft, also including the pump shaft sleeve pipe (6) being arranged on pump shaft, the torsion
The two ends of square instrument (5) connect motor shaft sleeve pipe (3) and pump shaft sleeve pipe (6) respectively, the torquemeter (5) by fixed mount (4) with
The support frame (2) of fixed motor (1) is fixed together.
5. a kind of micro- lift vertical axial-flow pump lift measurement apparatus as claimed in claim 2, it is characterised in that：First pressure
Force snesor (9) is arranged on the pump discharge straight length (8) of axial-flow pump (7) by device for pressure measurement.
6. a kind of micro- lift vertical axial-flow pump lift measurement apparatus as claimed in claim 5, it is characterised in that：The pressure is surveyed
Amount device includes two pieces of positioning baffles (93) being installed in successively vertically on the pump discharge straight length (8), two pieces of positioning gears
The measurement sleeve pipe (92) being set on pump discharge straight length (8) is provided between plate (93), it is described to measure sleeve pipe (92) and two pieces
Positioning baffle encloses measured zone jointly between (93)；It is provided with measurement sleeve pipe (92) and is passed for laying first pressure
The bearing (91) of sensor (9)；The pump discharge straight length (8) is being provided with pressure tap on the pipe shaft in measured zone
(83)；Steam vent (921), steam vent are provided with the top of positioning baffle (93) or measurement sleeve pipe (92) in top
(921) place is provided with plug (922).
7. a kind of micro- lift vertical axial-flow pump lift measurement apparatus as claimed in claim 6, it is characterised in that：The pressure tap
(83) be uniformly distributed along the circumference of the pump discharge straight length (8), and the pressure tap (83) hole center and the bearing
(91) hole center is in same level.
8. a kind of micro- lift vertical axial-flow pump lift measurement apparatus as claimed in claim 6, it is characterised in that：Surveyed described in ring-type
Axial cross section product in amount region is more than four four times of the gross area of pressure tap (83).
9. a kind of micro- lift vertical axial-flow pump lift measurement apparatus as claimed in claim 5, it is characterised in that：The pump discharge
The pipe interior diameter of straight length (8) is D, and the pipe range of the pump discharge straight length (8) is more than 4D, the first pressure sensor (9)
The distance between the pump discharge of installation site and axial-flow pump (7) be more than 2D.
10. a kind of micro- lift vertical axial-flow pump lift measurement apparatus as claimed in claim 2, it is characterised in that：The auxiliary
Pump (17) is pipeline pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621365146.7U CN206290454U (en) | 2016-12-13 | 2016-12-13 | A kind of micro- lift vertical axial-flow pump lift measurement apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621365146.7U CN206290454U (en) | 2016-12-13 | 2016-12-13 | A kind of micro- lift vertical axial-flow pump lift measurement apparatus |
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| Publication Number | Publication Date |
|---|---|
| CN206290454U true CN206290454U (en) | 2017-06-30 |
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ID=59103672
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621365146.7U Active CN206290454U (en) | 2016-12-13 | 2016-12-13 | A kind of micro- lift vertical axial-flow pump lift measurement apparatus |
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| CN (1) | CN206290454U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106762709A (en) * | 2016-12-13 | 2017-05-31 | 合肥工业大学 | A kind of micro- lift vertical axial-flow pump lift measurement apparatus and measuring method |
-
2016
- 2016-12-13 CN CN201621365146.7U patent/CN206290454U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106762709A (en) * | 2016-12-13 | 2017-05-31 | 合肥工业大学 | A kind of micro- lift vertical axial-flow pump lift measurement apparatus and measuring method |
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