CN101738364B - Elastic constant-pressure liquid supply device - Google Patents
Elastic constant-pressure liquid supply device Download PDFInfo
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- CN101738364B CN101738364B CN2009102733275A CN200910273327A CN101738364B CN 101738364 B CN101738364 B CN 101738364B CN 2009102733275 A CN2009102733275 A CN 2009102733275A CN 200910273327 A CN200910273327 A CN 200910273327A CN 101738364 B CN101738364 B CN 101738364B
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Abstract
The invention discloses an elastic constant-pressure liquid supply device. A fixed support is a rectangular rigid frame; a guide rail respectively consists of two parallel channel-shaped steel girders the notches of which are opposite, is fixed in the middle of the fixed bracket and vertical to the left lateral surface and the right lateral surface of the fixed bracket; a plunger type cylinder is a cylindrical hollow cylinder with a bottom; a plunger is a rod piece with a rectangular front half and cylindrical rear half; the plunger is directly arranged in the plunger type cylinder; and a fixed support seat of the plunger type cylinder is a circular lantern ring, respectively sleeved on the outer walls of the front end and the rear end of the plunger type cylinder and connected with the outer wall of the plunger type cylinder. A connecting rod supporting seat and a guide rod supporting seat are fixed on the left side wall of the fixed bracket along a horizontal line; the left end of the connecting rod is articulated with the connecting rod supporting seat through a connecting rod fixed rotating shaft; a limiting shaft brush is clamped between two rectangular rods of a connecting rod and sleeved on the connecting rod fixed rotating shaft; and the right end of the connecting rod is articulated with the plunger through a connecting shaft. The invention has reasonable and simple structure and convenient operation, realizes constant-pressure liquid supply and can be used for soil seepage tests and earth pillar leaching tests.
Description
Technical field
The present invention relates to the experimental measurement Instrument technology field, relate in particular to a kind of elastic constant-pressure liquid supply device, but the constant-pressure liquid supply device of a kind of pressure stability non-transformer long-term work is provided for scientific experiments such as soil seepage tests and earth pillar leaching tests.
Background technology
Hydraulic experiment is the basic physical and mechanical experiment of a class, is one of main research means of hydraulics, permeation fluid mechanics research, and the perfect constant-pressure liquid supply device of a cover is necessity equipment that carries out hydraulic experiment.
Use comparatively general liquid feed device at present and be roughly float-ball type and self-overflow type liquid feed device, be more popular liquid feed device, its function is all more single, can not satisfy the test accuracy requirement in fields such as scientific research and teaching.Mainly there is following shortcoming in traditional constant-pressure liquid supply device:
1) the feed flow ground roll of traditional float-ball type and self-overflow type liquid feed device is moving bigger, i.e. liquid supply pressure fluctuation is bigger, is difficult to satisfy the needs to the scientific experiment of liquid supply pressure stability high request.
2) for keeping constant level, must and keep overflow situation, serious waste of resources to the liquid reserve tank continuous liquid supply during experiment.
3) traditional constant-pressure liquid supply device need of work power supply, in case have a power failure, experiment will be interrupted or be discarded.
When 4) traditional constant-pressure liquid supply device was worked, the liquid reserve tank overflow certainly will cause the interference to the test liquid body, and the experiment such as the experimental projects such as flow field, Reynolds of having relatively high expectations for test liquid body homeostasis degree will have a negative impact.
5) shortage is used for the special-purpose constant-pressure liquid supply device that acid, aqueous slkali etc. have corrosive liquids at present.
Therefore, the more perfect constant-pressure liquid supply device of research and development is significant for the development that promotes hydraulics, permeation fluid mechanics.
Summary of the invention
It is bigger to the objective of the invention is to solve traditional liquid feed device liquid supply pressure fluctuation, serious waste of resources, and depend on the difficult problem of power supply, a kind of elastic constant-pressure liquid supply device is provided.This constant-pressure liquid supply device is simple in structure, and is easy to operate, and liquid supply pressure is stable, but non-transformer long-term work, can economize on resources, can be used for the constant-pressure liquid supply of corrosive liquids such as acid, aqueous slkali, can satisfy the demand of scientific experiments such as soil seepage tests and earth pillar leaching test constant-pressure liquid supply device.
In order to achieve the above object, the present invention adopts following technical measures:
A kind of elastic constant-pressure liquid supply device, it is made of parts such as fixed support, guide rail, plunger case hold-down support, pin sleeve, cylindrical pin, ball bearing, plunger case, plunger, coupling shaft, connecting rod, guide rod, leader casing, connecting rod support, connecting rod fixed rotating shaft, guide bar receiver, guide rod fixed rotating shaft, rotation axis, spring, nut, supplying valve, feed liquor valve, feed tube, liquid container, feed pipe, spacing axle sleeves.
Fixed support is a rectangular rigid frame, horizontal positioned.Two groups of guide rails respectively are made up of two relative parallel slot section steel beams of notch, are fixed on support bracket fastened middle part, and perpendicular to support bracket fastened left and right side.
Plunger case adopts the acid and alkali-resistance material for the band cylinder type hollow cylindrical shell at the end, makes as acid and alkali-resistance organic glass, engineering plastics, and internal diameter is about 120～150mm, is about 800～1000mm.Plunger is that first half is that cuboid, latter half are cylindrical rod member, adopt the acid and alkali-resistance material, make as acid and alkali-resistance organic glass, engineering plastics, the right cylinder of plunger the latter half is about 830～1030mm, and its external diameter is than the little about 0.05～0.05mm of plunger case internal diameter.Plunger is directly installed in the plunger case, and free movable before and after can be in plunger case, the plunger after the assembling and the gap of plunger case be 0.015～0.025mm.
Connecting rod support and guide bar receiver are fixed on the support bracket fastened left side wall along a horizontal line, and connecting rod support is preceding, guide bar receiver after.Connecting rod is made up of two rectangular shaft, and the left end of connecting rod is hinged by connecting rod fixed rotating shaft and connecting rod support, and connecting rod can rotate around the connecting rod fixed rotating shaft.Spacing axle sleeve is enclosed within on the connecting rod fixed rotating shaft between two rectangular shaft of connecting rod, makes two rectangular shaft of connecting rod keep certain spacing.The right-hand member of connecting rod is hinged by the top of coupling shaft and plunger.Leader casing is the hollow cylinder of square-outside and round-inside, and leader casing is clipped between two rectangular shaft of connecting rod, and by rotation axis in F point and rod hinge connection.The axle center of connecting rod fixed rotating shaft to the axle center of rotation axis apart from the axle center of OF and connecting rod fixed rotating shaft equating to the axle center of guide rod fixed rotating shaft apart from OD.
Guide rod is a cylindrical bar, and the left end of guide rod is hinged by guide rod fixed rotating shaft and guide bar receiver, and guide rod can rotate around the guide rod fixed rotating shaft, and 1/3 guide rod length range of the right part of guide rod is threaded, and nut is screwed in the right part of guide rod.Guide rod passes leader casing, and spring housing is on the guide rod of leader casing with the right side, and spring is between leader casing and nut.The axle center of guide rod fixed rotating shaft equals the original length of spring to the distance of nut.Liquid supply pressure can realize that the position of setting nut can adapt to the spring of different original lengths by the rigidity of adjusting spring.
The plunger case hold-down support is a circular ring, and the plunger case hold-down support is enclosed within on the plunger case outer wall and with the plunger case outer wall and firmly is connected.The two ends, the left and right sides of the bottom of plunger case hold-down support respectively connect a pin sleeve, and the pin sleeve bottom has cylindrical hole.The cylindrical hole of pin sleeve is respectively installed a cylindrical pin, and the front and back ends of cylindrical pin is respectively installed a ball bearing.Described ball bearing directly is embedded in the notch of guide rail.Ball bearing can horizontally slip along the longitudinal axis of guide rail, and the plunger case that drives plunger case hold-down support and top thereof moves as left and right horizontal, and plunger case can not take place vertically, the motion or the rotation of fore-and-aft direction.
Supplying valve and feed liquor valve are equipped with in the bottom of plunger case.Supplying valve can by feed pipe directly be connected with liquid unit (promptly bearing the experimental apparatus that test specimen is housed or the parts of the effect of test liquid body).When closing the feed liquor valve, can be under the elastic force effect of spring to carrying out constant-pressure liquid supply with the liquid unit.
The feed liquor valve is communicated with by the test liquid body in feed tube and the liquid container (promptly be used to test liquid).When the valve of closing supplying valve, when opening the valve of feed liquor valve and pulling out plunger outward, the test liquid body will be inhaled in the plunger case.
The course of work of described elastic constant-pressure liquid supply device is: depresses plunger then, is closed supplying valve to the plunger case bottom, open the feed liquor valve, and pull out plunger outward, the test liquid body is sucked in the plunger case, after the test liquid body in the plunger case reaches the quantity that needs, close the feed liquor valve.Air in the emptying feed pipe is connected to feed pipe corresponding using on the liquid unit then, opens supplying valve, can carry out related experiment.Under the elastic force effect of spring, the test liquid body is to producing certain pressure with the liquid unit, and the test liquid body in the plunger case will go out stream, and liquid level descends, plunger will press down the test liquid body in the elastic force driving of spring, and liquid supply pressure is constant in this process, has realized constant-pressure liquid supply.Liquid supply pressure can be adjusted by the spring of changing different-stiffness.
The principle of the described elastic constant-pressure liquid supply device of following brief analysis.
Accompanying drawing 7 is schematic diagrams of described elastic constant-pressure liquid supply device constant voltage effect.
If OF=OD=b, OC=d, the stiffness coefficient of spring is k, and makes the original length L=DE of spring, and the active line of pressure P is parallel with OD, and the angle of DE and OD is θ, and angle β=π-2 θ of OC and OD is then arranged
Then, spring action is at the elastic force T=2kbcos of OC bar θ
The moment M that elastic force T is ordered to O (T)=2kbcos θ bsin θ=kb
2Sin (2 θ)
The moment M that pressure P is ordered to O (P)=cPsin (π-2 θ)=cPsin (2 θ)
Moment M (P) balance that moment M that elastic force T is ordered to O (T) and pressure P are ordered to O, promptly
cPsin(2θ)＝kb
2sin(2θ)
P=kb is just arranged
2/ c
As seen, as long as satisfy the condition of setting, the connecting rod of described elastic constant-pressure liquid supply device is in any position, and when promptly β was arbitrarily angled, liquid supply pressure P was always a constant value.
The present invention compared with prior art has the following advantages and effect:
1) from the principle of aforesaid elastic constant-pressure liquid supply device constant voltage effect as can be known, the hydraulic pressure that described elastic constant-pressure liquid supply device provided derives from the elastic force of spring, and under the elastic force effect of spring, the pressure of test liquid body is constant.
2) described elastic constant-pressure liquid supply device changed in the past in the constant-pressure liquid supply device in the liquid reserve tank liquid level must be constant and keep the way of overflow, can save resource.
3) described elastic constant-pressure liquid supply device does not need power supply, but long-term work, and save the energy, and simultaneously, strengthening the reliability of experiment, can not interrupt because of power failure causes experiment, in addition discarded.
4) described elastic constant-pressure liquid supply device only needs the artificial outer plunger that pulls out, and gives described liquid feed device topping up, does not need to join solution feed pump in addition, has removed the misgivings to device security.
5) cut off the feed flow source, effectively cut off the liquid internal vibration source, greatly improved the stability of liquid supply pressure.
6) parts that contact with the test liquid body of described elastic constant-pressure liquid supply device adopt the acid and alkali-resistance material, make as acid and alkali-resistance organic glass, engineering plastics, can be used for the constant-pressure liquid supply that acid, aqueous slkali etc. have corrosive liquids.Simultaneously, owing to save parts such as solution feed pump, overflow mechanism, equipment more becomes simply, helps the safety management of corrosive liquids.
Utilize this elastic constant-pressure liquid supply device to carry out experiment, when test liquid body pressure is 100～200kPa, when the 10ml/h～400ml/h, the pressure surge of test liquid body only is ± 1hPa that its pressure controling precision is 1hPa with flow quantity.Solve the traditional bigger difficult problem of liquid feed device liquid supply pressure fluctuation, realized high-precision constant-pressure liquid supply.Utilize this elastic constant-pressure liquid supply device can carry out the permeability test of low-permeability clay sample, continuous working for a long time reaches more than the first quarter moon, and test liquid body pressure stability, have good long term work proterties, solved the difficult problem that traditional liquid feed device depends on power supply and long-term feed flow poor reliability.This elastic constant-pressure liquid supply device has satisfied the demand of scientific experiments such as soil seepage tests and earth pillar leaching test to high-precision constant-pressure liquid supply device, has meaning for the development that promotes hydraulics, permeation fluid mechanics.
Description of drawings
Fig. 1 is a kind of elastic constant-pressure liquid supply device structural representation.
Fig. 2 is the A-A sectional view of described elastic constant-pressure liquid supply device.
Fig. 3 is the B-B sectional view of described elastic constant-pressure liquid supply device.
Fig. 4 is the C-C sectional view of described elastic constant-pressure liquid supply device.
Fig. 5 is the D-D sectional view of described elastic constant-pressure liquid supply device.
Fig. 6 is the E-E sectional view of described elastic constant-pressure liquid supply device.
Fig. 7 is the schematic diagram of described elastic constant-pressure liquid supply device constant voltage effect.
Among Fig. 1～Fig. 7,1. fixed support, 2a, 2b. guide rail, 3a, 3b. the plunger case hold-down support, 4a, 4b, 4c, the 4d pin sleeve, 5a, 5b, 5c, 5d. cylindrical pin, 6a, 6b, 6c, 6d, 6e, 6f, 6g, 6h. ball bearing, 7. plunger case, 8. plunger, 9. coupling shaft, 10. connecting rod, 11. guide rods, 12. leader casing, 13. connecting rod supports, 14. connecting rod fixed rotating shafts, 15. guide bar receiver, 16. guide rod fixed rotating shafts, 17. rotation axiss, 18. spring, 19. nuts, 20. supplying valves, 21. feed liquor valve, 22. feed tube, 23. liquid containers, 24. feed pipes, 25. spacing axle sleeve, 26. test liquid bodies.
Embodiment
The invention will be further described with reference to the accompanying drawings below:
According to Fig. 1～Fig. 7 as can be known, this elastic constant-pressure liquid supply device is by fixed support 1, first, the second guide rail 2a, 2b, first, the second plunger case hold-down support 3a, 3b, first, second, the 3rd, the 4th pin sleeve 4a, 4b, 4c, 4d, first, second, the 3rd, the 4th cylindrical pin 5a, 5b, 5c, 5d, first, second, the 3rd, the 4th, the 5th, the 6th, the 7th, the 8th ball bearing 6a, 6b, 6c, 6d, 6e, 6f, 6g, 6h, plunger case 7, plunger 8, coupling shaft 9, connecting rod 10, guide rod 11, leader casing 12, connecting rod support 13, connecting rod fixed rotating shaft 14, guide bar receiver 15, guide rod fixed rotating shaft 16, rotation axis 17, spring 18, nut 19, supplying valve 20, feed liquor valve 21, feed tube 22, liquid container 23, feed pipe 24, spacing axle sleeve 25 constitutes.
It is characterized in that: fixed support 1 is a rectangular rigid frame, horizontal positioned.First, second guide rail 2a, 2b are made of each two relative parallel slot section steel beams of notch, be fixed on the middle part of fixed support 1, and perpendicular to support bracket fastened left and right side.
Connecting rod 10 is made up of two rectangular shaft, and the left end of connecting rod 10 is hinged by connecting rod fixed rotating shaft 14 and connecting rod support 13.Spacing axle sleeve 25 is clipped between two rectangular shaft of connecting rod 10, is enclosed within on the connecting rod fixed rotating shaft 14.The right-hand member of connecting rod 10 is hinged with the top of plunger 8 by coupling shaft 9.Leader casing 12 is the hollow cylinder of square-outside and round-inside, and leader casing 12 is clipped between two rectangular shaft of connecting rod 10, and hinged in F point and connecting rod 10 by rotation axis 17.The axle center of connecting rod fixed rotating shaft 14 to the axle center of rotation axis 17 apart from the axle center of OF and connecting rod fixed rotating shaft 14 equating to the axle center of guide rod fixed rotating shaft 16 apart from OD.
First, second plunger case hold-down support 3a, 3b are circular ring, and first, second plunger case hold-down support 3a, 3b are enclosed within respectively on the outer wall at plunger case 7 forward and backward two ends and with plunger case 7 outer walls and firmly are connected.The left side of the bottom of the first plunger case hold-down support 3a, right two ends connect first respectively, the second pin sleeve 4a, 4b, the left side of the bottom of the second plunger case hold-down support 3b, right two ends connect one the 3rd respectively, the 4th pin sleeve 4c, 4d, described first, second, the 3rd, the 4th pin sleeve 4a, 4b, 4c, the bottom of 4d has cylindrical hole, first, second, the 3rd, the 4th pin sleeve 4a, 4b, 4c, the cylindrical hole of 4d installs first respectively, second, the 3rd, the 4th cylindrical pin 5a, 5b, 5c, 5d, described first, second, the 3rd, the 4th cylindrical pin 5a, 5b, 5c, before the 5d, the rear end installs first respectively, second, the 3rd, the 4th, the 5th, the 6th, the 7th, the 8th ball bearing 6a, 6b, 6c, 6d, 6e, 6f, 6g, 6h.Described first, second, third, fourth ball bearing 6a, 6b, 6c, 6d directly are embedded in the notch of the first guide rail 2a, and the 5th, the 6th, the 7th, the 8th ball bearing 6e, 6f, 6g, 6h directly are embedded in the notch of the second guide rail 2b.First, second, third, fourth ball bearing 6a, 6b, 6c, 6d can horizontally slip along the longitudinal axis of the first guide rail 2a, five, the 6th, the 7th, the 8th ball bearing 6e, 6f, 6g, 6h can horizontally slip along the longitudinal axis of the second guide rail 2b, the plunger case 7 that drives first, second plunger case hold-down support 3a, 3b and top thereof moves horizontally, and plunger case 7 can not take place vertically, the motion or the rotation of fore-and-aft direction.
Supplying valve 20 and feed liquor valve 21 are equipped with in the bottom of plunger case 7.Supplying valve 8 can by feed pipe 24 directly be connected with the liquid unit.When closing feed liquor valve 21, can be under the elastic force effect of spring 18 to carrying out constant-pressure liquid supply with the liquid unit.
Described plunger case 7, plunger 8, supplying valve 20, feed liquor valve 21, feed tube 22, liquid container 23, feed pipe 24 adopt the acid and alkali-resistance material, make as acid and alkali-resistance organic glass, engineering plastics, rubber.
The device scope of application
The invention provides a kind of elastic constant-pressure liquid supply device, can be used for soil infiltration test and earth pillar leaching test.
Claims (3)
1. elastic constant-pressure liquid supply device, it comprises fixed support (1), first, the second plunger case hold-down support (3a, 3b), plunger case (7), guide rod (11), leader casing (12), connecting rod support (13), connecting rod fixed bias circuit (14), guide bar receiver (15), guide rod fixed rotating shaft (16), it is characterized in that: fixed support (1) is a rectangular rigid frame, horizontal positioned, first, second guide rail (the 2a, 2b) each is made up of two relative parallel slot section steel beams of notch, be fixed on the middle part of fixed support (1), and perpendicular to the left side of fixed support (1), right flank, plunger case (7) is the band cylinder type hollow cylindrical shell at the end, plunger (8) is a cuboid for first half, latter half is cylindrical rod member, in the direct erection column plug cylinder (7) of plunger (8), first, the second plunger case hold-down support (3a, 3b) be circular ring, first, the second plunger case hold-down support (3a, it is preceding 3b) to be enclosed within plunger case (7) respectively, be connected on the outer wall at back two ends and with the outer wall of plunger case (7), connecting rod support (13) and guide bar receiver (15) are fixed on the left side wall of fixed support (1) along horizontal line, connecting rod support (13) is preceding, guide bar receiver (15) after, connecting rod (10) is made up of two rectangular shaft, the left end of connecting rod (10) is hinged by connecting rod fixed rotating shaft (14) and connecting rod support (13), spacing axle sleeve (25) is clipped between two rectangular shaft of connecting rod (10), be enclosed within on the connecting rod fixed rotating shaft (14), the right-hand member of connecting rod (10) is hinged with the top of plunger (8) by coupling shaft (9), leader casing (12) is the hollow cylinder of square-outside and round-inside, leader casing (12) is clipped between two rectangular shaft of connecting rod (10), hinged in F point and connecting rod (10) by rotation axis (17), the axle center of connecting rod fixed rotating shaft (14) is to the distance in the axle center of rotation axis (17)
With the axle center of connecting rod fixed rotating shaft (14) distance to the axle center of guide rod fixed rotating shaft (16)
Equate, guide rod (11) is a cylindrical bar, 1/3 guide rod length range of its right part is threaded, nut (19) is screwed in the right part of guide rod (11), the left end of guide rod (11) is hinged by guide rod fixed rotating shaft (16) and guide bar receiver (15), guide rod (11) passes leader casing (12), and spring (18) is enclosed within on the guide rod (11) of leader casing (12) with the right side, is positioned between leader casing (12) and the nut (19).
2. a kind of elastic constant-pressure liquid supply device according to claim 1, it is characterized in that: described first, the second plunger case hold-down support (3a, the left side of bottom 3b), right two ends connect first respectively, second, the 3rd, the 4th pin sleeve (4a, 4b, 4c, 4d), described first, second, the 3rd, the 4th pin sleeve (4a, 4b, 4c, bottom 4d) all has cylindrical hole, first, second, the 3rd, the 4th pin sleeve (4a, 4b, 4c, cylindrical hole 4d) installs first respectively, second, the 3rd, the 4th cylindrical pin (5a, 5b, 5c, 5d), described first, second, the 3rd, the 4th cylindrical pin (5a, 5b, 5c, 5d), the rear end installs first respectively, second, the 3rd, the 4th, the 5th, the 6th, the 7th, the 8th ball bearing (6a, 6b, 6c, 6d, 6e, 6f, 6g, 6h), described first, second, the 3rd, the 4th ball bearing (6a, 6b, 6c, 6d) directly be embedded in the notch of first guide rail (2a) the 5th, the 6th, the 7th, the 8th ball bearing (6e, 6f, 6g, 6h) directly be embedded in the notch of second guide rail (2b).
3. a kind of elastic constant-pressure liquid supply device according to claim 1, it is characterized in that: supplying valve (20) and feed liquor valve (21) are equipped with in the bottom of described plunger case (7), and feed liquor valve (21) is communicated with test liquid body (26) in the liquid container (23) by feed tube (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102733275A CN101738364B (en) | 2009-12-18 | 2009-12-18 | Elastic constant-pressure liquid supply device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102733275A CN101738364B (en) | 2009-12-18 | 2009-12-18 | Elastic constant-pressure liquid supply device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101738364A CN101738364A (en) | 2010-06-16 |
| CN101738364B true CN101738364B (en) | 2011-04-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009102733275A Expired - Fee Related CN101738364B (en) | 2009-12-18 | 2009-12-18 | Elastic constant-pressure liquid supply device |
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| Country | Link |
|---|---|
| CN (1) | CN101738364B (en) |
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2009
- 2009-12-18 CN CN2009102733275A patent/CN101738364B/en not_active Expired - Fee Related
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| CN101738364A (en) | 2010-06-16 |
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Granted publication date: 20110413 Termination date: 20161218 |