CN207148141U - Pressure method stirs current Simple speed measuring device - Google Patents
Pressure method stirs current Simple speed measuring device Download PDFInfo
- Publication number
- CN207148141U CN207148141U CN201721162459.7U CN201721162459U CN207148141U CN 207148141 U CN207148141 U CN 207148141U CN 201721162459 U CN201721162459 U CN 201721162459U CN 207148141 U CN207148141 U CN 207148141U
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- tube
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- speed measuring
- skin support
- measuring device
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Abstract
It the utility model is related to pressure method stirring current Simple speed measuring device, including fixed mount, skin support pitot tube, computer system and photo resistance system, the fixed mount setting is used to fix the skin support pitot tube at the top of stirring current drum, photo resistance system is provided with the skin support pitot tube, photo resistance system is connected with computer system again；Wherein, the U-tube part in variable cross-section part test tube, the uiform section test tube that middle part is set in inverted L shape and upper right quarter diminution section that the lower horizontal that the skin support pitot tube includes being sequentially connected is set；The variable cross-section part test tube that the lower horizontal is set is made up of conical device and the rotatable water inlet rotary head being attached thereto.The photo resistance system is positioned over the right side end pipe side that the upper right quarter is reduced in the U-tube part in section, receives the right side end pipe opposite side collimated light beam for transmission end pipe and it is converted into electric signal and is transferred to computer system.
Description
Technical field
A kind of speed measuring device, more particularly to pressure method stirring current Simple speed measuring device are the utility model is related to, belongs to survey
Try technical field.
Background technology
A kind of utility model patent CN201420084216.6 " Marine reinforced concrete structure natural rust moulds of the big prestige of Lee et al.
Intend device " marine environment is simulated, a kind of corrosive environment can be used as to carry out model experiment, the analogue experiment installation is adopted
It is a kind of stirring container, it produces motion using rotation of the propeller to current, forms a kind of whirlpool, so as to be mixed to reinforcing bar
The permeating corrosion of solidifying local products life real motion, but the device does not provide specific marine environment background, such as in coagulation
The water velocity on native surface is not drawn but, can not enter line interface with true environment.
Utility model content
Therefore, for the above mentioned problem of prior art, the utility model provides pressure method stirring current and simply tested the speed dress
Put, the purpose is to the speed by testing current on the basis of patent CN201420084216.6, it is contemplated that stable state is non-
Water velocity on the diverse locations such as stable state, radius and flow depth, to solve the current under test simulation marine environment
Speed, so as to be adjusted, agreed with reaching with true environment.
To realize above-mentioned utility model, the technical scheme that the utility model is provided is as follows：
Pressure method stirs current Simple speed measuring device, including fixed mount, skin support pitot tube, computer system and photosensitive electricity
Resistance system, the fixed mount setting are used to fix the skin support pitot tube at the top of stirring current drum, and the skin support tests the speed
Photo resistance system is provided with pipe, photo resistance system is connected with computer system again；Wherein, the skin support pitot tube includes
Uiform section test tube and upper right quarter contracting of the variable cross-section part test tube, middle part that the lower horizontal being sequentially connected is set in inverted L shape setting
The U-tube part of small bore；The variable cross-section part test tube that the lower horizontal is set can oneself by conical device with what is be attached thereto
It is made up of the water inlet rotary head rotated, the uiform section test tube bottom that the water inlet rotary head is set with middle part in inverted L shape passes through rotating part
Position rotatable connection.
Further, the water inlet rotary head includes the caliber diminution area and connected horizontally therewith be connected with rotation portion
Caliber expands area, and the caliber reduces area and is connected with caliber expansion area by caliber transition region, and flow inlet is arranged at caliber expansion
Great Qu ends, the flow inlet are arranged at current speed measuring point position in drum.
Further, the U-tube section diameter that the skin support pitot tube upper right quarter reduces section is 3mm, rotary head pipe of intaking
The a diameter of 8mm in footpath expansion area, the caliber of remainder skin support pitot tube is 6mm.
Further, the fixed mount includes the cross at the top of drum；The cross is provided centrally with one
Circular hole, be provided with circular hole one can the vertical cylinder body that freely stretches of both ends, and the upper/lower terminal of the cylinder is also set respectively
Upper and lower horizontal extension support bar is equipped with, upper and lower horizontal extension support bar one end is provided with annulus, is tested the speed for fixing skin support
The middle part of pipe is in the uiform section test tube that inverted L shape is set.
Further, the cross is welded together by four square hollow iron pipes, while is added two-by-two between iron pipe
There is armpit support.
Further, the photo resistance system is positioned over the right side that the upper right quarter is reduced in the U-tube part in section
End pipe side, receive the right side end pipe opposite side collimated light beam for transmission end pipe and it is converted into electric signal and incited somebody to action
It sends computer system to.
Further, the computer system includes processor, input unit and display device.
Further, container bottom of the barrel is provided with propeller, and the propeller is driven by motor.
Relative to prior art, the utility model has the following technical effect that：
Pressure method of the present utility model stirring current Simple speed measuring device is simple in construction, easy to operate, and measuring accuracy can be with
Meet experiment detection needs.It can effectively measure water velocity, the armored concrete structure especially under simulating ocean environment
The water velocity of part corrosion situation, is with a wide range of applications.
Brief description of the drawings
Fig. 1 is that the utility model pressure method stirs current Simple speed measuring device schematic diagram；
Fig. 2 is fixed rack structure schematic diagram of the present utility model；
Fig. 3 is telescoping cylinders body of the present utility model and supporting bar structure schematic diagram；
Fig. 4 is that the variable cross-section part cuvette construction that lower horizontal of the present utility model is set illustrates enlarged drawing；
Fig. 5 is skin support pitot tube schematic diagram of the present utility model；
Fig. 6 is water inlet rotary head instrumentation plan of the present utility model.
Reference：1- fixed mounts；2- skin support pitot tubes；3- photo resistance systems；4- drums；5- lower horizontals are set
Variable cross-section part test tube；The uiform section test tube set in the middle part of 6- in inverted L shape；7- upper right quarters reduce the U-tube part in section；8-
Conical device；9- water inlet rotary heads；10- rotation portions；11- calibers reduce area；12- calibers expand area；13- calibers transition region；14-
Flow inlet；15- diagonal braces；16- crosses；17- cylinders；The upper and lower horizontal extension support bars of 18-；19- annulus；20- terminations
Pipe；21- collimated light beams；22- armpits support；23- propellers.
Embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings.
As shown in figures 1 to 6, pressure method stirring current Simple speed measuring device of the present utility model, including fixed mount 1, skin support are surveyed
Fast pipe 2, computer system and photo resistance system 3.As shown in figure 1, fixed mount 1 is arranged at the top of stirring current drum 4
For fixing the skin support pitot tube 2, be provided with photo resistance system 3 on skin support pitot tube 2, photo resistance system 3 again with meter
Calculation machine system connects, and the top of skin support pitot tube 2 is not closed directly to be connected with air.Skin support pitot tube 2 includes what is be sequentially connected
The U in variable cross-section part test tube 5, the uiform section test tube 6 that middle part is set in inverted L shape and upper right quarter diminution section that lower horizontal is set
Type tube portion 7.Lower horizontal set variable cross-section part test tube 5 by conical device 8 and be attached thereto it is rotatable enter
Water rotary head 9 is formed, and water inlet rotary head 9 is rotated with middle part in the uiform section test tube bottom 6 that inverted L shape is set by rotation portion 10 to be connected
Connecing, the caliber that water inlet rotary head 9 includes being connected with rotation portion 10 reduces area 11 and caliber connected horizontally expands area 12 therewith,
Caliber reduces area 11 and is connected with caliber expansion area 12 by caliber transition region 13, and flow inlet 14 is arranged at caliber and expands the end of area 12
Portion, flow inlet 14 are arranged at current speed measuring point position in drum 4, as shown in Figure 4.The bottom of drum 4 is provided with propeller
23, the propeller 23 is driven by motor.As shown in Fig. 2 fixed mount 1 includes the cross 16 positioned at the top of drum 4.Cross
Frame 16 is welded together by four square hollow iron pipes, while is equipped with armpit support 22 between iron pipe two-by-two.The center of cross 16
Be provided with a circular hole, as shown in figure 3, be provided with circular hole one can the vertical cylinder body 17 that freely stretches of both ends, and cylinder 17
Upper/lower terminal be also respectively provided with upper and lower horizontal extension support bar 18, upper and lower one end of horizontal extension support bar 18 is respectively provided with
There is annulus 19, the middle part for fixing skin support pitot tube 2 is in the uiform section test tube 6 that inverted L shape is set.Photo resistance system 3 is placed
The side of right side end pipe 20 in the U-tube part 7 that the upper right quarter reduces section, for receiving the right side through end pipe 20
It is simultaneously converted into electric signal and is transferred to computer system by side head tube opposite side collimated light beam 21.Computer system bag
Include processor, input unit and display device.The resistance size of photo resistance system 3 is recorded automatically by computer system.
The speed-measuring method of above-mentioned pressure method stirring current Simple speed measuring device, its step that tests the speed are as follows：
Step 1：Skin support pitot tube 2 is fixed on two annulus 19 of the upper and lower horizontal extension support bar 18 of cross 16
Face,
Step 2：The U-tube part 7 that the upper right quarter of skin support pitot tube 2 is reduced to section is filled with the lighttight ink of color
Water；
Step 3：By the flexible length for adjusting the underwater penetration of skin support pitot tube 2 and upper and lower horizontal extension support bar 18
Degree, you can the flow inlet 14 of skin support pitot tube 2 is accurately positioned over current speed measuring point position to be measured and measured with this in drum 4 and is appointed
The flow rate of water flow size for opening position of anticipating；
Step 4：Start speed measuring device, open the collimated light beam that upper right quarter reduces the side of U-tube part 7 in section later
21 and computer system；
Step 5：Before skin support pitot tube 2 is not inserted into water, the both sides liquid level of U-tube part 7 flushes；Tested the speed in skin support
After pipe 2 is inserted in water, the discrepancy in elevation will occur in skin support pitot tube U-tube part 7；When propeller 23 rotates, stationary water can produce
Raw non-directional speed, the discrepancy in elevation of U-tube part 7 can further increase；With down or up, the energy of liquid level in U-tube part 7
It will increase or reduce through the light that U-tube part 7 is irradiated to above photo resistance system 3, utilize photo resistance size
Change cause the change of electric current in circuit, electric signal is connected with computer system, so as to establish between flow velocity and electric current
Relation, reach the purpose of measurement flow velocity.
Specifically, as seen in figs. 5-6, before skin support pitot tube 2 is not inserted into water, the both sides liquid level of U-tube part 7 is neat
Flat, the water level height in FO section U-tubes will be located at 2 interfaces；After skin support pitot tube 2 is inserted in water, in U-tube part 7
The discrepancy in elevation will occur, now the water level in FO section U-tubes can be higher than 2 interfaces.When propeller 23 rotates, stationary water can produce
Raw non-directional speed, it is assumed that the flow inlet 14 of skin support pitot tube 2 can be with unresisted any 360 degree of rotations, according to mechanical balance
The conical device 8 of water inlet rotary head 9 rear portion configuration can only cause flow inlet 14 just to can guarantee that balance in main flow direction, be use up with this
It is possible to reduce because flow velocity caused by flow velocity direction loses.Assuming that now flow inlet 14 can produce stream in G points at K points
Speed, apart from close and in the same horizontal line, the flow velocity that G points are finally entered from K points has certain loss for G points and K points, it is assumed that
Loss amount is β, and the liquid height at final U-tube upper opening can raise, i.e., is increased to 1 interface F points from the M points at 2 interfaces.With
The down or up of liquid level in the end pipe 20 of right side in U-tube, can be irradiated to through end pipe 20 above photoresistance cell
Light will increase or reduce, cause the change of electric current in circuit using the change of photo resistance size, so as to establish stream
Relation between speed and electric current, reaches the purpose of flow velocity in measurement apparatus, and computer can automatically calculate and record M points in real time
To the difference in height Δ h between F points.
Assuming that the bottom underwater penetration of skin support pitot tube 2 is Hz, while energy caused by the shape of skin support pitot tube 2 is not considered
Loss, it is assumed that air is incompressible.Using GK lines as reference line, the pressure head at G points is mainly made up of two parts.When by
In the caused static head of water depth, two be due to conversion speed head of the speed at G points；If by a upper end open
Straight tube bottom is placed in G points, and now test tube reclaimed water can rise a heightBut present skin support pitot tube
2 have individual U-tube part 7 in upper right quarter, wherein water has been filled, so the pressure head of G points is causing the test tube close to G points part
Outside water level rises, the water in U-tube part 7 can be also caused to produce the discrepancy in elevation.Test tube water level close to G points part rises certain
During height, the air in test tube can be promoted and then cause the water in U-tube part 7 close to open at one end to produce a height, it is false
If air is incompressible, then the height risen at U-tube part 7 should be twice of middle part uiform section section.So required mesh
Mark speed is V2
By the irradiation of collimated light beam 21, then cause the change of electric current in circuit using the change of photo resistance size
Change, so as to the relation that can be established between flow velocity and electric current by computer system, reach the purpose that flow velocity measures.
Embodiment 1
Size determines：
β=0 is taken, the drum 4 a diameter of 550mm, clear depth 550mm, most outer speed is about 2m/s.
Ho：The device first has to meet the point flow velocity that can be measured that most bottom surface, therefore Ho >=550mm, takes Ho=
570mm；
MO sections and MF sections：The height risen when the point of measurement is located at 4 bottom outermost edge point of drum can reach maximum, meter
Calculate its rise total height should be 750mm, so MO >=500mm, MF >=500mm；Take MO=MF=500mm；
Ha：It is 100mm to take its length；
Meanwhile 7 a diameter of 3mm of U-tube part in the upper right quarter of skin support pitot tube 2 diminution section is taken, water inlet rotary head caliber expands
12 a diameter of 8mm of great Qu, the caliber of remainder skin support pitot tube 2 is 6mm.
Then we sharp can experimentally determine speed loss β value, while establish speed and U-tube reclaimed water
Post lifting height formula table, it can also be consulted by this table during measurement.
Enter and, at intervals of 0.05m/s, exemplified by end speed is 2.5m/s one group of speed, can lead to using initial water speed as 1m/s
Cross computer system and read the height that water column rises, it is established that on water column lifting height relation in speed and U-tube.It is it is determined that public
The unknown parameter of formula, it can both be calculated during user's velocity measurement, can also be tabled look-up according to the lifting height of measurement according to formula
Draw institute's measuring point data.
Above-described embodiment is intended merely to become apparent to illustrate that what the technical solution of the utility model made enumerates, not to this reality
With new restriction, one of ordinary skill in the art is according to change of the common knowledge of this area to herein described technical scheme
Lead to also within the application protection domain, in a word, above-described embodiment is only to enumerate, and the protection domain of the application is with appended right
Scope is defined described in claim.
Claims (8)
1. pressure method stirs current Simple speed measuring device, it is characterised in that；Including fixed mount (1), skin support pitot tube (2), calculate
Machine system and photo resistance system (3), the fixed mount (1), which is arranged at the top of stirring current drum (4), to be used to fix institute
State skin support pitot tube (2), be provided with photo resistance system (3) on the skin support pitot tube (2), photo resistance system (3) and with
Computer system connects；Wherein, the variable cross-section part examination that the lower horizontal that the skin support pitot tube (2) includes being sequentially connected is set
Manage the U-tube part (7) of (5), the uiform section test tube (6) that middle part is set in inverted L shape and upper right quarter diminution section；The bottom water
The flat variable cross-section part test tube (5) set is by conical device (8) and rotatable water inlet rotary head (9) group being attached thereto
Into the water inlet rotary head (9) is rotated with middle part in uiform section test tube (6) bottom that inverted L shape is set by rotation portion (10) to be connected
Connect.
2. pressure method according to claim 1 stirs current Simple speed measuring device, it is characterised in that：The water inlet rotary head
(9) caliber for including being connected with rotation portion (10) reduces area (11) and caliber connected horizontally expands area (12) therewith, institute
State caliber diminution area (11) to be connected by caliber transition region (13) with caliber expansion area (12), flow inlet (14) is arranged at caliber
Expand area (12) end, the flow inlet (14) is arranged at current speed measuring point position in drum.
3. pressure method according to claim 2 stirs current Simple speed measuring device, it is characterised in that：The skin support pitot tube
(2) upper right quarter reduces U-tube part (7) a diameter of 3mm in section, and water inlet rotary head caliber expands area (12) a diameter of 8mm, remaining
The caliber of part skin support pitot tube (2) is 6mm.
4. pressure method according to claim 1 stirs current Simple speed measuring device, it is characterised in that：The fixed mount (1)
Including the cross (16) at the top of drum (4)；The cross (16) is provided centrally with a circular hole, is provided with circular hole
One can the vertical cylinder body (17) that freely stretches of both ends, and the upper/lower terminal of the cylinder (17) be also respectively provided with it is upper and lower
Horizontal extension support bar (18), upper and lower horizontal extension support bar (18) one end are provided with annulus (19), are surveyed for fixing skin support
The middle part of speed pipe (2) is in the uiform section test tube (6) that inverted L shape is set.
5. pressure method according to claim 4 stirs current Simple speed measuring device, it is characterised in that：The cross (16)
Welded together by four square hollow iron pipes, while be equipped with armpit support (22) between iron pipe two-by-two.
6. pressure method according to claim 1 stirs current Simple speed measuring device, it is characterised in that：The photo resistance system
System (3) is positioned over right side end pipe (20) side that the upper right quarter is reduced in the U-tube part (7) in section, for through end
Head tube (20) receives right side end pipe (20) the opposite side collimated light beam (21) and it is converted into electric signal and is transferred to
Computer system.
7. pressure method according to claim 1 stirs current Simple speed measuring device, it is characterised in that：The computer system
Including processor, input unit and display device.
8. pressure method according to claim 1 stirs current Simple speed measuring device, it is characterised in that：Drum (4) bottom
Propeller (23) is provided with, the propeller (23) is driven by motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721162459.7U CN207148141U (en) | 2017-09-12 | 2017-09-12 | Pressure method stirs current Simple speed measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721162459.7U CN207148141U (en) | 2017-09-12 | 2017-09-12 | Pressure method stirs current Simple speed measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207148141U true CN207148141U (en) | 2018-03-27 |
Family
ID=61678499
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721162459.7U Expired - Fee Related CN207148141U (en) | 2017-09-12 | 2017-09-12 | Pressure method stirs current Simple speed measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207148141U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108597323A (en) * | 2018-05-03 | 2018-09-28 | 江苏科技大学 | A kind of experimental provision and its operating method of simulation Rankine combined vortex |
-
2017
- 2017-09-12 CN CN201721162459.7U patent/CN207148141U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108597323A (en) * | 2018-05-03 | 2018-09-28 | 江苏科技大学 | A kind of experimental provision and its operating method of simulation Rankine combined vortex |
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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: 20180327 Termination date: 20210912 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |