CN1546967A - Hydrostatic surface pressure measuring apparatus for arbitrary face - Google Patents
Hydrostatic surface pressure measuring apparatus for arbitrary face Download PDFInfo
- Publication number
- CN1546967A CN1546967A CNA2003101065289A CN200310106528A CN1546967A CN 1546967 A CN1546967 A CN 1546967A CN A2003101065289 A CNA2003101065289 A CN A2003101065289A CN 200310106528 A CN200310106528 A CN 200310106528A CN 1546967 A CN1546967 A CN 1546967A
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- Prior art keywords
- lever
- water
- scale mark
- upper tank
- curved surface
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- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
Abstract
The invention is pressure measuring device for any surface standing level. The structure is: the upper water tank is set on the supporting base of the water storing box; the water storing box has a pump. The pump transmits the water in the box to the upper water tank through water-in pipes, there has a water-out pipe between the upper water tank and the water storage box, there sets a compound body of camber needed to be measured in the upper water tank, there sets a supporting point spindle which can move left and right between the upper water tank and the scaled lever, the compound body of the camber slide contacts with the scaled lever, and it can move left and right, and front and back. The left side of the lever has a sliding block which can set the position by itself, the right side of the lever has a flat adjusting block, the left end of the lever sets a weights plumbing bar. The merits: it can measure the water pressure of surface with any shape.
Description
Technical field
What the present invention relates to is that the face of measuring the arbitrary shape surface in hydrostatic is pressed measuring instrument, belongs to hydraulics
Technical field.
Background technology
The horizontal pressure force of the rectangle plane that prior art can only measuring vertical in hydrostatic be placed.
Summary of the invention
The objective of the invention is to defective, propose a kind of pressure (size, direction, application point) that in hydrostatic, can survey water to the arbitrary shape surface at above-mentioned existence.Technical solution of the present invention: its structure is that upper tank is located on the bearing of water storage tank, water pump is housed in the water storage tank, water pump is delivered to the water in the water storage tank in the upper tank by water inlet pipe, between upper tank and water storage tank rising pipe is arranged, be provided with the assembly (pressure body, projection body) of curved surface to be measured in the upper tank, but upper tank and have the fulcrum axis body that move left and right is arranged between the lever of scale mark, the assembly of curved surface with have the lever sliding contact of scale mark, and can move by left-right and front-back between the two.Have on the left side of lever of scale mark and set up the position slide block on their own, having on the right side of lever of scale mark has the leveling piece, and the left end that has the lever of scale mark is provided with the weights plumbing bar.Advantage of the present invention: can survey the surperficial suffered hydrostatic water pressure of arbitrary shape, avoid asking numerous and diverse approximate treatment (finite element method, difference) of the suffered water pressure of irregular surface in the past, solve the difficult problem on the engineering.Utilize resolution of vectors, moment substitutes, the conversion of couple, power, is used for teaching and can cultivates student's multiple thinking, changed in the past in the education experiment, only surveyed the horizontal pressure force unicity of water, the abundant hydrostatic force content of improving the plane, not only be suitable for university's water conservancy class specialty, also be suitable for middle school physical experiment.
Description of drawings
Accompanying drawing 1 is the embodiments of the invention structural representations.
Accompanying drawing 2 is that the pressure body of getting assembly is the embodiment synoptic diagram (1/4 right cylinder) of segment, can be used as the projection body simultaneously again.
Accompanying drawing 4 is to act on curved surface bchE horizontal pressure force and the embodiment synoptic diagram that acts on the horizontal pressure force of plane abcd.
Accompanying drawing 5 is curved surface Ebch pressure at right angle (pressure body) embodiment synoptic diagram.
Among the figure 1 is water storage tank, the 2nd, water pump, the 3rd, and rising pipe, the 4th, water inlet pipe, the 5th, bearing, the 6th, the assembly of curved surface, the 7th, upper tank, 8 counterweight plumbing bars, the 9th, fulcrum axis body, the 10th, leveling piece, the 11st has the lever of scale mark, and abcd is that plane, Ebch, adGF are curved surfaces.
Embodiment
Contrast accompanying drawing 1, upper tank 7 is located on the bearing 5 of water storage tank 1, water pump 2 is housed in the water storage tank 1, water pump 2 is delivered to the water in the water storage tank 1 in the upper tank 7 by water inlet pipe 4,2 of upper tank 7 and water storage tanks have rising pipe 3, be provided with the assembly 6 of curved surface to be measured in the upper tank 7, upper tank 7 and 11 on the lever that has a scale mark have movably fulcrum axis body 9, the assembly 6 of curved surface and lever 11 sliding contacts that have scale mark, have on the left side of lever 11 of scale mark and set up position slide block L on their own, having on the right side of lever 11 of scale mark has leveling piece 10, and the left end that has the lever 11 of scale mark is provided with counterweight plumbing bar 8.
The course of work: make the lever 11 that has scale mark be in horizontality with leveling piece 10, and the position (will transfer bearing 5 earlier before, make upper tank 7 levels) of the assembly 6 of record curved surface.Energized makes water pump 2 that the water of reserve tank 1 is entered upper tank 7 through water inlet pipe 4, treat certain water level after, close the valve on the water inlet pipe 4.
Actual measurement program (is example with 1/4 cylinder),
(1) regulate bearing 5, make upper tank 7 bottom air levels placed in the middle, upper tank 7 is in horizontality.
(2) assembly 6 of curved surface slides on the lever 11 that has scale, sets sliding position L
1, L
2Set sliding position L
1(apart from the fulcrum axis body)=15cm, on fulcrum axis body 9 left sides, leveling piece 10 is 13cm on fulcrum axis body 9 the right apart from fulcrum axis body 9, sets sliding position L
2(apart from the fulcrum axis body)=17cm, on the fulcrum left side, leveling piece 10 is at 16cm place, fulcrum the right.At this moment, the lever 11 that has a scale is in horizontality.
(3) open valve on the water inlet pipe 4, with the 9cm place of water logging at the combination pressure body 6 of curved surface,
Setting sliding position L this moment
1Under the condition, by adding counterweight G at weights plumbing bar 8
1, make lever 11 levels that have scale, charging to known counterweight weight is G
1, because of the horizontal direction of combination pressure body is surrounded by water, horizontal resultant is zero, as shown in Figure 4.So just replaceable one-tenth has only vertical forces to act on the combination pressure body, as shown in Figure 5.G
10(pressure body) * X (vertical forces is apart from the arm of force of fulcrum axis body)=G
1* 27.5 (counterweight plumbing bar 8 is apart from the arm of forces of fulcrum axis body) (I)
Again at L
2Under the condition, water still soaks the line place at the 9cm of assembly 6, by the G that adds weight again at weights plumbing bar 8
2Make lever 11 levels that have scale, G is then arranged
10* (X+2)=(G
1+ G
2) * 27.5
(II)
(I) formula substitution (II) formula is got: G
10=27.5 * G
2/ 2
(4) horizontal projection of getting the curved surface of asking is vertical a combined projection body, the surface of combined projection body is by vertical 1, perpendicular to vertical cylinder 2 (border of cylinder is vertical border), and is rotating shaft, is that to be cut part by cylinder 2 be the another side (establishing this face is curved surface 3) of combined projection body to the formed surfaces of revolution of bus with the straight line of crossing vertical nadir and being parallel to rotating shaft with the fulcrum axis body.At this moment, the combined projection body is being set sliding position L
1Under the condition, water still is immersed in the 9cm place of combined projection body, and curved surface 3 suffered horizontal forces equal vertical 1 suffered horizontal force F
1, cylinder 2 suffered vertical forces are w
1, the suffered vertical force of combined projection body is w
2, curved surface 3 suffered vertical forces are w
3Then: W
1=W
2-W
3W
2, W
3Can ask by step (3).
w
1* L
10(w
1The arm of force to fulcrum)+F
1(Y is F to * Y
1The arm of force to fulcrum)
=G
3* 27.5 (III) L
10Can ask, Y (can lead to
Cross independent vertical 1, move and add down the transverse axis that moves, the water of 9cm is to vertical
1 the transverse axis that whether surpasses is with joint efforts asked vertical 1 rotation), G
3For making lever 11
Be equilibrated at the counterweight weight that counterweight plumbing bar 8 adds.
And W in the actual measurement example
1=0, Y=6 substitution (III) formula F
1=G
3* 27.5/6
(5) as the horizontal force F of asking curved surface
1When vertical 1 vertical plane also has horizontal component, can repeat process in (4), ask the suffered horizontal force of horizontal plane this moment to asking curved surface half-twist.
(6) the mobile all around decidable F of assembly and fulcrum axis body
1With G
10Whether act in the same plane.
(7) by pressure body G
10(vertical direction) and Ebch horizontal pressure force F
1Can ask (R with joint efforts
1) and application point R
1 2=G
10 2+ F
1 2
(8) measured result and theoretical value can be compared the evaluation accuracy of instrument.
Claims (1)
1, the arbitrary face still water level is pressed measuring instrument, it is characterized in that upper tank is located on the bearing of water storage tank (7) (5), water pump (2) is housed in the water storage tank (7), water pump (2) is delivered to the water in the water storage tank (1) in the upper tank (7) by water inlet pipe (4), between upper tank (7) and water storage tank (1) rising pipe (3) is arranged, be provided with the assembly (6) of curved surface to be measured in the upper tank (7), upper tank (7) and have scale mark lever (11) but between the fulcrum axis body (9) of move left and right is arranged, assembly of curved surface (6) and lever (11) sliding contact that has scale mark, and can move by left-right and front-back, have on the left side of lever (11) of scale mark and set up position slide block (L) on their own, having on the right side of lever of scale mark has leveling piece (10), and the left end that has the lever (11) of scale mark is provided with counterweight plumbing bar (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101065289A CN100439888C (en) | 2003-12-04 | 2003-12-04 | Hydrostatic surface pressure measuring apparatus for arbitrary face |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101065289A CN100439888C (en) | 2003-12-04 | 2003-12-04 | Hydrostatic surface pressure measuring apparatus for arbitrary face |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1546967A true CN1546967A (en) | 2004-11-17 |
| CN100439888C CN100439888C (en) | 2008-12-03 |
Family
ID=34334222
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2003101065289A Expired - Fee Related CN100439888C (en) | 2003-12-04 | 2003-12-04 | Hydrostatic surface pressure measuring apparatus for arbitrary face |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100439888C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101865746A (en) * | 2010-06-02 | 2010-10-20 | 河海大学 | Vertical jetting momentum equation dynamometer |
| CN101673484B (en) * | 2009-09-30 | 2012-07-18 | 浙江大学 | Self-circulating electrical-testing total hydrostatic pressure tester |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2164038Y (en) * | 1993-07-22 | 1994-05-04 | 晏政权 | Checking device of brake force test desk |
| CN2235643Y (en) * | 1994-03-31 | 1996-09-18 | 张治栋 | Audio-visual demonstration instrument for teaching purpose |
-
2003
- 2003-12-04 CN CNB2003101065289A patent/CN100439888C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101673484B (en) * | 2009-09-30 | 2012-07-18 | 浙江大学 | Self-circulating electrical-testing total hydrostatic pressure tester |
| CN101865746A (en) * | 2010-06-02 | 2010-10-20 | 河海大学 | Vertical jetting momentum equation dynamometer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100439888C (en) | 2008-12-03 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081203 Termination date: 20111204 |