CN103033457B - Calibrator for concrete penetrometer - Google Patents
Calibrator for concrete penetrometer Download PDFInfo
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- CN103033457B CN103033457B CN201210544545.XA CN201210544545A CN103033457B CN 103033457 B CN103033457 B CN 103033457B CN 201210544545 A CN201210544545 A CN 201210544545A CN 103033457 B CN103033457 B CN 103033457B
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Abstract
The invention discloses a calibrator for a concrete penetrometer, which aims to overcome the problem that in the prior art, the measuring pressure cannot be precisely controlled, the work efficiency is low due to slow pressurizing of the instrument, the universality is poor and the safety is poor. The calibrator for the concrete penetrometer comprises a pressure resisting flange disc (1), a safety valve (2), a fine adjustment valve (4), a pressure input end (5) and a relieving valve (6). A pressure input screwed through hole is formed in the center of the pressure resisting flange disc (1), and a safety valve screwed through hole, a fine adjustment valve screwed through hole and a relieving valve screwed through hole are uniformly distributed around the pressure input screwed through hole. The pressure input end (5) is connected with the pressure input screwed through hole formed in the center of the pressure resisting flange disc (1), the safety valve (2) is connected with the safety valve screwed through hole on the pressure resisting flange disc (1), the fine adjustment valve (4) is connected with the fine adjustment valve screwed through hole on the pressure resisting flange disc (1), and the relieving valve (6) is connected with the relieving valve screwed through hole on the pressure resisting flange disc (1).
Description
Technical field
The present invention relates to a kind of calibrating installation, or rather, the present invention relates to a kind of calibrator for concrete penetrometer.
Background technology
Applicant entrusts Ministry of Education's Sci-tech Novelty Searching station (Z04) to inquire about both at home and abroad with or without same or similar bibliographical information, takes passages wherein 3 sections, closely related document, and the file quoting these background technologies of reflection as proof is as follows:
1. article name is " improvement of concrete impervious instrument self checking method "; Author is Zhang Kai, Zheng Guanghe, Zhou Yonghai etc.; Authors' working unit is engineering mechanics research institute of the Yellow River Institute of Hydro-Technical Research, and the meeting name that article is delivered is called the 11 the national comprehensive scientific seminar of water conservancy measurement technology; Article source is 296 pages ~ 299 pages of water conservancy measurement technology selected papers (the 5th collection); Time is 2006;
Describe in article and adopt infiltration method detection concrete impermeability comparatively truly to reflect concrete impermeability intuitively.The calibration interval of concrete impervious instrument are 1 year, in the past to needing tensimeter dismounting Xia Song measurement verification department to verify during the calibration interval, time-consuming and fragile. adopt the self checking method through improving in this paper can not only completely examine Anti-leakage instrument total system, and it is not efficiency is high, fragile.With 0.4 grade of precision pressure gauge through metrological service's verification as criteria check tensimeter, be installed to supporting on processing work dish, again scratch diskette is installed on Anti-leakage instrument worktable, set respectively according to code and be verified Anti-leakage instrument force value and carry out applied voltage test, detect the error of set pressure and display pressure.
2. article name is " field calibration concrete penetrometer "; Author is Zheng Limin; Authors' working unit is that Lishui quality technical supervision detects institute; Article source is periodical " China's metering, CHINAMETROLOGY2007, (10) ", the 71st page.
Describe electro connecting pressure gauge in article on concrete penetrometer, be used to show that test pressure value and pressure bound control automatically, so the indicating value of the electro connecting pressure gauge metering performance index that to be accurately permeameter main.Conventional methods is that electro connecting pressure gauge is pulled down from concrete penetrometer, and censorship in 6 months once.And dismounting is difficult in real work, and disassembly process easily damages tensimeter, copper pipe and web member.For addressing this problem, as long as install an X-over additional.Electro connecting pressure gauge just can carry out field calibration without dismounting.One end of X-over is that M16 external thread is connected with the water-filling nozzle on permeameter pressure vessel, and the other end is M20 × 1.5 internal thread and (or middle adjunction rapid-acting coupling) 0.4 grade of precision pressure list catenation.Thus achieve master gauge and electro connecting pressure gauge is connected on same pressure source.Field calibration operation steps: one is close die trial by-pass valve control and No. 0 by-pass valve control.Two is energising, startup power switch, makes pump working, opens die trial by-pass valve control and No. 0 by-pass valve control discharge air, till bubble-free; Hydraulic pressure on pipeline rises, and electro connecting pressure gauge and normal pressure gauge pressure raise thereupon.Three is calibrate with reference to the pressure indicating value of JJG52-1999 " General Manometer of Elastic Tube, pressure vacuum meter and vacuum meter " vertification regulation to permeameter.
3. article name is " improvement of concrete impervious instrument detection method "; Author is Hu peace, Zuo Gang; Article source is 2012 of periodical " Shanghai metrology and measurement ", the 4th phase.
A kind of improvement of concrete impervious instrument detection method is described in article, install additional above die trial one with the blind flange of die trial top same size size, a high-precision digital pressure gauge is installed at blind flange center, is used for examining and determine the index of concrete impervious instrument pressure index and pressure controlling section.During calibrating, first pressure controller preset pressure is pressurizeed by every 0.8MPa, control to be incremented to 4MPa.
Note: cement concrete permeameter and Anti-leakage instrument are same type instrument, just the name of product of each manufacturer is different.
Problems existing in background technology:
1. can not accurate control survey pressure
Scratch diskette, blind flange or X-over that the background technology of the bibliographical information retrieved describes are all single spare and accessory parts, function singleness, can not accurately control to detect the measurement pressure of concrete infiltration needed for (or impervious) instrument, the display error of indication can not be stablized, the technical requirement of national verification code cannot be met;
2. there is no safety valve
There is no safety valve for pressure-overload pressure release, the personal safety of operating personnel when occurring that superpressure is dangerous, can not be protected.
3. instrument pressurization slowly, inefficiency
The pressure method that background technology describes, be all permeate the pressure controller preset pressure of (or impervious) instrument by detected instrument concrete and pressurize, the impact that the circulation force (forcing) pump due to tested instrument shakes, the accuracy of measurement is not high, slowly, efficiency is low in pressurization.
4, versatility is bad
The scratch diskette of description of the prior art, blind flange or X-over are all single spare and accessory parts, and its function is an interface unit, run into that size is inconsistent just cannot be used.
Prior art is all by detected instrument concrete impervious (or impervious) instrument pressure controller preset pressure and pressurizes, the impact that circulation force (forcing) pump due to detected instrument has shaken and the longer build-up of pressure of the pressure system pipeline of detected instrument fluctuates, pressure display is beated very large, and the accuracy of controlled pressure value is not high.According to JG52-1999 " General Manometer of Elastic Tube, pressure vacuum meter and vacuum meter " and JJG875-1994 " digital pressure gauge vertification regulation " requirement, tested manometer must carry out the detection of hysterisis error.Because infiltration (or impervious) instrument controller can only control boosting, so the prior art relying on detected instrument pressure controller to carry out pressurizeing all cannot meet the technical requirement that in national verification code, hysterisis error detects.
Calibrating device of the present invention is pressurizeed by the external hydraulic pressure source of pressure input, pressure process can the pressure indicating value that shows in real time of reference standard manometer operate, when pressure in system is larger from setup pressure value, with hydraulic pressure source Quick-pressing, when force value is close to setup pressure value, with micrometering valve pressurization, control accuracy reaches 0.001MPa; Carrying out the detection of hysterisis error by controlling blowdown valve, meeting the technical requirement that in national verification code, the error of indication and hysterisis error detect completely.
2. pressure limiting design, ensures personnel's property safety
At present, the scratch diskette of the description of the prior art of the bibliographical information retrieved, blind flange or X-over are all single spare and accessory parts, and its function is an interface unit, does not have pressure limiting to design, let alone the personnel of guarantee property safety.Design aligners of the present invention has safety valve, the overvoltage/overload of restriction system pressure, ensures personnel's property safety.
3. Quick-pressing design effort efficiency is high
In real work, the technical requirement of cement concrete infiltration (or impervious) instrument product design is every 8 hours stress 0.1MPa, the pressure capacity determining instrument itself is limited, so by using the controller of detected instrument to pressurize, the pressing time reaching setup pressure value is long.According to our on-the-spot measuring and calculating, according to national verification code, use art methods to complete the calibration of detected infiltration (or impervious) instrument, need the time more than 1 hour.Calibrating device of the present invention is pressurizeed by the external hydraulic pressure source of pressure input, and rapidly, in detected infiltration (or impervious) instrument situation of good performance, (system sealing is good in pressurization, non-leakage, instrument display is normal), within 20 interior minutes, can complete, work efficiency significantly improves.
4. composite design, versatility is good
The scratch diskette of description of the prior art, blind flange or X-over are all single spare and accessory parts, and its function is an interface unit, run into that size is inconsistent just cannot be used.The combination of calibrating device of the present invention compresses design, 6 split fixed blocks are each can movement flexibly, as long as the permeameter of same type examination film (JTG+E30-2005 " the solidifying native testing regulations of highway engineering cement and cement lavatory " national standard has specified in more detail to examination film size), fastening size difference also can complete calibration operation.
Summary of the invention
Technical matters to be solved by this invention is can not accurately control survey pressure, instrument pressurizeing the bad and unsafe problem of slow inefficiency, versatility of overcoming that prior art exists, provides a kind of calibrator for concrete penetrometer.
For solving the problems of the technologies described above, the present invention adopts following technical scheme to realize: described calibrator for concrete penetrometer comprises pressure-resistant flange dish, safety valve, micrometering valve, pressure input and blowdown valve.
The center of described pressure-resistant flange dish arranges a pressure input tapped through hole, around pressure input tapped through hole, be evenly equipped with safety valve tapped through hole, micrometering valve tapped through hole and blowdown valve tapped through hole.The pressure that pressure input and pressure-resistant flange disk center locate inputs tapped through hole and is threaded, safety valve is threaded with the safety valve tapped through hole on pressure-resistant flange dish, micrometering valve is threaded with the micrometering valve tapped through hole on pressure-resistant flange dish, and blowdown valve is threaded with the blowdown valve tapped through hole on pressure-resistant flange dish.
Calibrator for concrete penetrometer described in technical scheme adopts No. 1 split fixed block, No. 2 split fixed blocks, No. 3 split fixed blocks, No. 4 split fixed blocks, No. 5 split fixed blocks and No. 6 split fixed blocks are fixed on detected infiltration (or impervious) instrument.No. 1 split fixed block, No. 2 split fixed blocks, No. 3 split fixed blocks, No. 4 split fixed blocks, No. 5 split fixed blocks are identical with No. 6 split fixed-block-architecture (FBA)s, No. 1 split fixed block, No. 2 split fixed blocks, No. 3 split fixed blocks, No. 4 split fixed blocks, No. 5 split fixed blocks and No. 6 split fixed blocks are distributed on around pressure-resistant flange dish, No. 1 split fixed block, No. 2 split fixed blocks, No. 3 split fixed blocks, No. 4 split fixed blocks, on the die trial mount pad that one end of No. 5 split fixed blocks and No. 6 split fixed blocks adopts die trial bolt to be fixed in detected infiltration (or impervious) instrument respectively, No. 1 split fixed block, No. 2 split fixed blocks, No. 3 split fixed blocks, No. 4 split fixed blocks, No. 5 split fixed blocks and the other end of No. 6 split fixed blocks adopt fastening bolt to contact with the upper surface of pressure-resistant flange dish to connect respectively.
Described in technical scheme No. 1 split fixed block, No. 2 split fixed blocks, No. 3 split fixed blocks, No. 4 split fixed blocks, one end of No. 5 split fixed blocks and No. 6 split fixed blocks is respectively arranged with downward open slot, No. 1 split fixed block, No. 2 split fixed blocks, No. 3 split fixed blocks, No. 4 split fixed blocks, No. 5 split fixed blocks and No. 6 split fixed blocks are respectively arranged with two through holes, the axis of rotation of two through holes is parallel to each other also vertical with the top end face of the split fixed block at its place, with No. 1 tapped through hole that the through hole of open slot vertical connection is installation fastening bolt, another through hole is No. 2 light through holes installing die trial bolt.
The upper surface of the pressure-resistant flange dish in the calibrator for concrete penetrometer described in technical scheme is provided with No. 1 handle and No. 2 handles, No. 1 handle is identical with No. 2 grip structures, and No. 1 handle and No. 2 handles are arranged on the periphery of pressure-resistant flange dish upper surface symmetrically.
Safety valve described in technical scheme comprises safety valve Connection Block, safety valve body, safety valve apocenosis mouth, safety valve discharging tube, safety valve pressure limiting spring and safety valve seal bar.The lower thread end of safety valve Connection Block is connected with the safety valve tapped through hole on pressure-resistant flange dish, and the upper thread end of safety valve Connection Block is connected with the lower thread end of safety valve body, and on safety valve body, thread end is connected with thread end under safety valve discharging tube; Safety valve seal bar is arranged in the macropore of safety valve body lower end, the cone of safety valve seal bar lower end is equipped with the central through hole of safety valve Connection Block lower end and connects for contacting, safety valve pressure limiting spring is between safety valve seal bar upper surface and safety valve discharging tube lower surface, and the internal thread hole of safety valve apocenosis mouth and the upper end of safety valve discharging tube are for being threaded.
The lower thread end of the safety valve discharging tube described in technical scheme is set with safety valve lock jack panel, and the lower surface of safety valve lock jack panel contacts with the top end face of safety valve body and connects.
Micrometering valve described in technical scheme is made up of micrometering valve Connection Block, fine setting valve body, micrometering valve handwheel and micrometering valve screw rod.The lower thread end of micrometering valve Connection Block is connected with the micrometering valve tapped through hole on pressure-resistant flange dish, and the upper thread end of micrometering valve Connection Block is connected with the lower end threaded hole of fine setting valve body.For being threaded in the hole of the insertion fine setting valve body upper end, lower end of micrometering valve screw rod, micrometering valve handwheel is arranged on the top of micrometering valve screw rod.
Blowdown valve described in technical scheme is made up of blowdown valve Connection Block, pressure relief valve body, blowdown valve handwheel, blowdown valve screw rod and pressure release mouth.The lower thread end of blowdown valve Connection Block is connected with the blowdown valve tapped through hole on pressure-resistant flange dish, the upper thread end of blowdown valve Connection Block is connected with the lower end threaded hole of pressure relief valve body, for being threaded in the hole of the insertion pressure relief valve body upper end, lower end of blowdown valve screw rod, the conical surface of blowdown valve screw rod bottom contacts with the inner orifice of blowdown valve Connection Block or throws off, blowdown valve handwheel is arranged on the top of blowdown valve screw rod, and pressure release mouth is threaded with the screw in pressure relief valve body.
Compared with prior art the invention has the beneficial effects as follows:
1. accurate control survey pressure, meets the technical requirement of national verification code
The foundation of the technical indicator of cement concrete infiltration (or impervious) instrument product of current China is the technical requirement of JT/T249-2009 " concrete impervious instrument ", and it requires that the pressure display error of instrument and pressure set points error all should be not more than ± 0.015MPa.And at present infiltration (or impervious) instrument pressure display section be generally be shown to 0.01MPa, what even have is only shown to 0.1MPa.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is further illustrated:
Fig. 1 is the axonometric projection graph of calibrator for concrete penetrometer structure of the present invention composition;
Fig. 2 is the front view of the micrometering valve structure composition adopted in calibrator for concrete penetrometer of the present invention;
Fig. 3 is the front view of the pressure-relief valve structure composition adopted in calibrator for concrete penetrometer of the present invention;
Fig. 4 is the front view of the safety valve structure composition adopted in calibrator for concrete penetrometer of the present invention;
Fig. 5 is the axonometric projection graph of infiltration (or impervious) instrument worktable in cement concrete of the present invention infiltration (or impervious) instrument, die trial mount pad, die trial, die trial bolt and die trial O-ring seal assembly relation;
Fig. 6 is the front view of the pressure-resistant flange dish in calibrator for concrete penetrometer of the present invention and the die trial mount pad in detected cement concrete infiltration (or impervious) instrument and die trial O-ring seal assembly relation;
In figure: 1. pressure-resistant flange dish, 2. safety valve, No. 3.1 handles, 4. micrometering valve, 5. pressure input, 6. blowdown valve, No. 7.1 split fixed blocks, No. 8.1 fastening bolts, 9. micrometering valve Connection Block, 10. finely tune valve body, 11. micrometering valve handwheels, 12. micrometering valve screw rods, 13. blowdown valve Connection Blocks, 14. pressure relief valve body, 15. blowdown valve handwheels, 16. blowdown valve screw rods, 17. pressure release mouths, 18. safety valve Connection Blocks, 19. safety valve bodies, 20. safety valve apocenosis mouths, 21. safety valve discharging tubes, 22. safety valve lock jack panels, 23. safety valve pressure limiting springs, 24. safety valve seal bar, 25. die trial mount pads, 26. infiltration (or impervious) instrument worktable, 27. die trials, 28. die trial clamp nuts, 29. die trial bolts, 30. die trial O-ring seals.
Embodiment
Below in conjunction with accompanying drawing, the present invention is explained in detail:
Consult Fig. 1, calibrator for concrete penetrometer of the present invention is made up of the fastening bolt that the identical split fixed block of pressure-resistant flange dish 1, safety valve 2,2 handles that structure is identical i.e. No. 1 handle 3 and No. 2 handles, micrometering valve 4, pressure input 5, blowdown valve 6,6 structures is identical with 6 structures.
The material of described pressure-resistant flange dish 1 is stainless steel, and pressure-resistant flange dish 1 diameter is more than or equal to infiltration (or impervious) instrument die trial O-ring seal 30 outside dimension 2mm.The center of pressure-resistant flange dish 1 arranges the input of the pressure for setting pressure input end 5 tapped through hole, the surrounding of the pressure input tapped through hole on pressure-resistant flange dish 1 is evenly equipped with 3 tapped through holes and safety valve tapped through hole, micrometering valve tapped through hole and blowdown valve tapped through hole, is respectively used to mounting safety valve 2, micrometering valve 4 and blowdown valve 6.
2 described handles i.e. No. 1 handle 3 and No. 2 handles, No. 1 handle 3 is identical with No. 2 grip structures, No. 1 handle 3 and No. 2 handles are door font, No. 1 handle 3 in door font adopts welding manner to be fixedly connected with the bottom of No. 2 handles with pressure-resistant flange dish 1, and No. 1 handle 3 and No. 2 handles are arranged on the inner side of the upper surface periphery of pressure-resistant flange dish 1 symmetrically.
6 described fastening bolts i.e. No. 1 fastening bolt 8, No. 2 fastening bolts, No. 3 fastening bolts, No. 4 fastening bolts, No. 5 fastening bolts and No. 6 fastening bolts, No. 1 fastening bolt 8, No. 2 fastening bolts, No. 3 fastening bolts, No. 4 fastening bolts, No. 5 fastening bolts are identical with No. 6 fastening bolt structures.
Consult Fig. 6, 6 described split fixed blocks i.e. No. 1 split fixed block 7, No. 2 split fixed blocks, No. 3 split fixed blocks, No. 4 split fixed blocks, No. 5 split fixed blocks are identical with No. 6 split fixed-block-architecture (FBA)s, No. 1 split fixed block 7, No. 2 split fixed blocks, No. 3 split fixed blocks, No. 4 split fixed blocks, No. 5 split fixed blocks and No. 6 split fixed blocks are distributed on pressure-resistant flange dish 1 around, one end of each split fixed block is provided with downward open slot, each split fixed block is provided with two through holes, the axis of rotation of two through holes is parallel to each other also vertical with the top end face of the split fixed block at two through hole places, be No. 1 tapped through hole with the through hole of open slot vertical connection, another through hole is No. 2 smooth bore, No. 2 smooth bore are for installing the die trial bolt 29 namely inserted on infiltration (or impervious) instrument.Tighten the die trial clamp nut 28 be sleeved on die trial bolt 29, No. 1 split fixed block 7, No. 2 split fixed blocks, No. 3 split fixed blocks, No. 4 split fixed blocks, No. 5 split fixed blocks and No. 6 split fixed blocks are fixed on the die trial mount pad 25 of detected infiltration (or impervious) instrument equably.No. 1 tapped through hole is for installing fastening bolt 8, the bottom face of fastening bolt 8 is connected with the upper surface contact of pressure-resistant flange dish 1, by screwing on the die trial O-ring seal 30 on die trial mount pad 25 that fastening bolt 8 to be tightly pressed in pressure-resistant flange dish 1 in infiltration (or impervious) instrument.
Consult Fig. 4, described safety valve 2 is made up of safety valve Connection Block 18, safety valve body 19, safety valve apocenosis mouth 20, safety valve discharging tube 21, safety valve lock jack panel 22, safety valve pressure limiting spring 23, safety valve seal bar 24.
Described safety valve Connection Block 18 lower end is provided with external thread, upper end is provided with internal thread, one end profile of internal thread is for ease of the hexagon of mounting safety valve 2, and the lower end of safety valve Connection Block 18 is provided with central through hole, and central through hole is communicated with the internal thread hole of upper end.
Described safety valve body 19 lower end is provided with external thread, and upper end is provided with internal thread, and stage casing profile is hexagon, and the center along safety valve body 19 axis is provided with ladder hole, and the diameter of bore of lower end is greater than the diameter of threaded upper ends through hole.
Described safety valve apocenosis mouth 20 is the locking cap that one (right side) end is provided with internal thread, another (left side) end is provided with through hole.
Described safety valve discharging tube 21 is the square tubular structure part adopting stainless-steel tube to make, one end is provided with external thread, the other end is provided with external thread and annular fixing lug boss, and annular fixing lug boss is positioned at externally threaded left end, annular fixing lug boss outer through being less than externally threaded internal diameter.
Described safety valve lock jack panel 22 for profile be hexagonal thin nut.
Described safety valve pressure limiting spring 23 is cylindrical helical stainless steel stage clip.
There are 60 degree of cones described safety valve seal bar 24 lower end, upper end is the right cylinder being provided with 2 axially extending bores, cylindrical diameter is greater than the maximum gauge of 60 degree of cones, and the barrel portion of safety valve seal bar 24 and the larger diameter internal bore of safety valve body 19 lower end are equipped with as being slidably matched.
The lower thread end of safety valve Connection Block 18 is connected with the safety valve tapped through hole on pressure-resistant flange dish 1, and upper thread end and safety valve body 19 times thread end of safety valve Connection Block 18 are connected, and on safety valve body 19, thread end and safety valve discharging tube 21 times thread end are connected; Safety valve seal bar 24 is arranged in the large diameter hole of safety valve body 19 lower end, the upper aperture of the cone of safety valve seal bar 24 lower end and the central through hole of safety valve Connection Block 18 lower end is equipped with, under the effect of safety valve pressure limiting spring 23 pretightning force, both are contact connection to safety valve seal bar 24, and safety valve pressure limiting spring 23 is installed between safety valve seal bar 24 upper surface and safety valve discharging tube 21 lower surface; Safety valve lock jack panel 22 is sleeved on safety valve discharging tube 21, and the lower surface of safety valve lock jack panel 22 contacts with safety valve body 19 upper surface and connects.
During spin safe valve discharging tube 21, safety valve discharging tube 21 can move up and down in the threaded upper ends hole of safety valve body 19, thus changing the pressure of safety valve pressure limiting spring 23 elastic deformation, the spring pressure of safety valve pressure limiting spring 23 passes to safety valve seal bar 24; When spring pressure is greater than the pressure of detected instrument system, safety valve 2 ends, and when spring pressure is less than the pressure of detected instrument system, pressure release opened by safety valve 2.
Safety valve 2 needs adjustment valve body voltage limiting value before installing, voltage limiting value is less than pressure-resistant flange dish 1 design pressure, is generally 1.8MPa, and system pressure is greater than this pressure, and pressure release opened by safety valve 2, ensures personal security.
Described pressure input 5 is made up of pressure input seat and input pressure flexible pipe connection.
The lower end of described pressure input seat is provided with external thread, and the profile in stage casing is arranged to hexagon, and upper end is provided with external thread and annular fixing lug boss, and annular fixing lug boss is positioned at externally threaded upper end, annular fixing lug boss outer through being less than externally threaded internal diameter; Along pressure input seat axis and on pressure input seat center line, be provided with central through hole.
Described input pressure flexible pipe connection one (under) end be provided with internal thread, another (on) end is provided with through hole and lower end profile is arranged to hexahedral locking cap.
Under pressure input seat, thread end is connected with the pressure input tapped through hole on pressure-resistant flange dish 1, and upper thread end is connected with input pressure flexible pipe connection.
Pressure input 5 pressure hose connects together the pressure output end in hydraulic pressure source with calibrator for concrete penetrometer, the pressure that hydraulic pressure source produces is input in detected infiltration (or impervious) instrument pressure system, and the boosting for force value is calibrated.
Consult Fig. 2, described micrometering valve 4 is made up of with micrometering valve screw rod 12 micrometering valve Connection Block 9, fine setting valve body 10, micrometering valve handwheel 11.
Described micrometering valve Connection Block 9 lower end is provided with external thread, and stage casing profile is arranged to hexagon, and upper end is provided with external thread, along micrometering valve Connection Block 9 axis and therein center be provided with central through hole.
The described inner upper/lower terminal of fine setting valve body 10 is threaded hole, and stage casing is the smooth bore less than threaded hole; Outer upper ends is provided with external thread, and right cylinder is arranged in stage casing, and hexahedron is arranged in lower end.
Described micrometering valve screw rod 12 lower end is cylinder, and stage casing is screw rod, and there are little cubic positioning table and threaded rod in upper end.
The lower thread end of micrometering valve Connection Block 9 is connected with the micrometering valve tapped through hole on pressure-resistant flange dish 1, and the upper thread end of micrometering valve Connection Block 9 is connected with fine setting valve body 10 lower end threaded hole; Micrometering valve screw rod 12 lower end is inserted for being threaded in fine setting valve body 10 upper end hole, and micrometering valve handwheel 11 is arranged on the top of micrometering valve screw rod 12, and during rotary fine adjustment valve hand wheel 11, micrometering valve screw rod 12 can move up and down.Micrometering valve screw rod 12 moves up, and the volume of airtight cavity increases, pressure drop in airtight cavity; Micrometering valve screw rod 12 moves down, and the volume of airtight cavity reduces, and in airtight cavity, pressure raises.
Micrometering valve 4 adjusts the system pressure in detected infiltration (or impervious) instrument by micrometering valve handwheel 11, for the error amount of precise alignment pressure criteria with detected infiltration (or impervious) instrument indicating value.
Consult Fig. 3, described blowdown valve 6 is made up of with pressure release mouth 17 blowdown valve Connection Block 13, pressure relief valve body 14, blowdown valve handwheel 15, blowdown valve screw rod 16.
Described blowdown valve Connection Block 13 lower end is provided with external thread, and stage casing profile is arranged to hexagon, and upper end is provided with external thread, along blowdown valve Connection Block 13 axis and therein center be provided with Connection Block central through hole.
The upper and lower end of described pressure relief valve body 14 endoporus is arranged to threaded hole, and the smooth bore less than threaded hole diameter is arranged in stage casing; Outer upper ends is provided with external thread, and right cylinder is arranged in stage casing, and hexahedron is arranged in lower end.Pressure relief valve body 14 lower end hexahedron (right side) is provided with a threaded hole, and the axis of rotation of threaded hole is vertical with the axis of rotation of pressure relief valve body 14.
Cylinder is arranged in described blowdown valve screw rod 16 lower end, and screw rod is arranged in stage casing, and little cubic positioning table and threaded rod are arranged in upper end.The bottom of lower end is 60 degree of cones.
Described pressure release mouth 17 1 (left side) end is provided with external thread, right cylinder is arranged in stage casing, and another (right side) end is provided with annular fixing lug boss in cone, and the axis along pressure release mouth 17 also center line is provided with pressure release mouth central through hole therein.
Blowdown valve Connection Block 13 times thread end are connected with the blowdown valve tapped through hole on pressure-resistant flange dish 1, and on blowdown valve Connection Block 13, thread end is connected with pressure relief valve body 14 lower end threaded hole.For being threaded in the upper end hole of the lower end insertion pressure relief valve body 14 of blowdown valve screw rod 16, pressure release mouth 17 is threaded with (right side) screw in pressure relief valve body 14, blowdown valve handwheel 15 is arranged on the top of blowdown valve screw rod 16, turn clockwise blowdown valve handwheel 15, the conical surface of blowdown valve screw rod 16 bottom can contact with the sealing of blowdown valve Connection Block 13 inner hole surface, and the water in airtight cavity can not flow out; Be rotated counterclockwise blowdown valve handwheel 15, the conical surface of blowdown valve screw rod 16 bottom separates with blowdown valve Connection Block 13 inner hole surface, and the water in airtight cavity is flowed out by pressure release mouth 17, the pressure drop in airtight cavity.
Blowdown valve 6 slowly can unload the pressure in detected infiltration (or impervious) instrument system by rotation blowdown valve handwheel 15, the step-down for force value is calibrated.
The principle of work of calibrator for concrete penetrometer:
Calibrator for concrete penetrometer is the detecting instrument according to hydrostatic principle design.
1. the installation steps of calibrator for concrete penetrometer:
Consult Fig. 5 and Fig. 6, when using calibrator for concrete penetrometer calibration cement concrete infiltration (or impervious) instrument, first unload by test examination instrument die trial clamp nut 28, die trial 27 is taken off from die trial mount pad 25.Afterwards the pressure-resistant flange dish 1 of calibrator for concrete penetrometer is placed on the die trial O-ring seal 30 of the die trial mount pad 25 in cement concrete infiltration (or impervious) instrument; Then No. 2 light through holes of No. 1 split fixed block 7, No. 2 split fixed blocks, No. 3 split fixed blocks, No. 4 split fixed blocks, No. 5 split fixed blocks and No. 6 split fixed blocks are set on die trial bolt 29, and it is fixing to be set with die trial clamp nut 28 at die trial bolt 29; Install fastening bolt 8 in No. 1 threaded hole of No. 1 split fixed block 7, No. 2 split fixed blocks, No. 3 split fixed blocks, No. 4 split fixed blocks, No. 5 split fixed blocks and No. 6 split fixed blocks, longitudinal plane of symmetry of No. 1 split fixed block 7, No. 2 split fixed blocks, No. 3 split fixed blocks, No. 4 split fixed blocks, No. 5 split fixed blocks and No. 6 split fixed blocks is all by the centre of gyration axis of pressure-resistant flange dish 1.Finally tighten 8 fastening bolts 8 respectively, the bottom face of fastening bolt 8 is connected with the upper surface contact of pressure-resistant flange dish 1, by screwing fastening bolt 8, pressure-resistant flange dish 1 is tightly pressed on the die trial O-ring seal 30 of the die trial mount pad 25 in detected infiltration (or impervious) instrument.
2. the calibration steps of calibrator for concrete penetrometer:
1) detected cement concrete infiltration (or impervious) instrument should be energized preheating 10 minutes before detection, makes water be full of the groove of die trial mount pad 25 upper surface, closes the water inlet shutoff valve of die trial mount pad 25.Afterwards calibrator for concrete penetrometer is fastened on die trial mount pad 25 reliably, opens the water inlet shutoff valve of die trial mount pad 25 afterwards.
2) by pressure input 5, adopt pressure hose that the pressure output end in hydraulic pressure source is connected together with calibrator for concrete penetrometer.
3) during calibration, pressure is from 0, and manually boost reposefully in hydraulic pressure source, is first calibration point with 0.2MPa, then often increases 0.2MPa and calibrates a point, until 1.6MPa cut-out pressure source, and withstand voltage 3min, pressure indicating value does not have and obviously declines; Then by the steady step-down of former calibration point, step-down calibration is carried out to each calibration point.
Claims (8)
1. a calibrator for concrete penetrometer, it is characterized in that, described calibrator for concrete penetrometer comprises pressure-resistant flange dish (1), safety valve (2), micrometering valve (4), pressure input (5) and blowdown valve (6);
The center of described pressure-resistant flange dish (1) arranges a pressure input tapped through hole, around pressure input tapped through hole, be evenly equipped with safety valve tapped through hole, micrometering valve tapped through hole and blowdown valve tapped through hole; Pressure input (5) inputs tapped through hole with the pressure of pressure-resistant flange dish (1) center and is threaded, safety valve (2) is threaded with the safety valve tapped through hole on pressure-resistant flange dish (1), micrometering valve (4) is threaded with the micrometering valve tapped through hole on pressure-resistant flange dish (1), and blowdown valve (6) is threaded with the blowdown valve tapped through hole on pressure-resistant flange dish (1).
2. according to calibrator for concrete penetrometer according to claim 1, it is characterized in that, described calibrator for concrete penetrometer adopts No. 1 split fixed block (7), No. 2 split fixed blocks, No. 3 split fixed blocks, No. 4 split fixed blocks, No. 5 split fixed blocks and No. 6 split fixed blocks are fixed on detected permeameter, No. 1 split fixed block (7), No. 2 split fixed blocks, No. 3 split fixed blocks, No. 4 split fixed blocks, No. 5 split fixed blocks are identical with No. 6 split fixed-block-architecture (FBA)s, No. 1 split fixed block (7), No. 2 split fixed blocks, No. 3 split fixed blocks, No. 4 split fixed blocks, No. 5 split fixed blocks and No. 6 split fixed blocks are distributed on pressure-resistant flange dish (1) around, No. 1 split fixed block (7), No. 2 split fixed blocks, No. 3 split fixed blocks, No. 4 split fixed blocks, on the die trial mount pad (25) that one end of No. 5 split fixed blocks and No. 6 split fixed blocks adopts die trial bolt (29) to be fixed in detected permeameter respectively, No. 1 split fixed block (7), No. 2 split fixed blocks, No. 3 split fixed blocks, No. 4 split fixed blocks, No. 5 split fixed blocks and the other end of No. 6 split fixed blocks adopt fastening bolt (8) to contact with the upper surface of pressure-resistant flange dish (1) to connect respectively.
3. according to calibrator for concrete penetrometer according to claim 2, it is characterized in that, No. 1 described split fixed block (7), No. 2 split fixed blocks, No. 3 split fixed blocks, No. 4 split fixed blocks, the described other end of No. 5 split fixed blocks and No. 6 split fixed blocks is respectively arranged with downward open slot, No. 1 split fixed block (7), No. 2 split fixed blocks, No. 3 split fixed blocks, No. 4 split fixed blocks, No. 5 split fixed blocks and No. 6 split fixed blocks are respectively arranged with two through holes, the axis of rotation of two through holes is parallel to each other also vertical with the top end face of the split fixed block at its place, with No. 1 tapped through hole that the through hole of open slot vertical connection is installation fastening bolt (8), another through hole is No. 2 smooth bore installing die trial bolt (29).
4. according to calibrator for concrete penetrometer according to claim 1, it is characterized in that, the upper surface of the pressure-resistant flange dish (1) in described calibrator for concrete penetrometer is provided with No. 1 handle (3) and No. 2 handles, No. 1 handle (3) is identical with No. 2 grip structures, and No. 1 handle (3) is arranged on the periphery of pressure-resistant flange dish (1) upper surface symmetrically with No. 2 handles.
5. according to calibrator for concrete penetrometer according to claim 1, it is characterized in that, described safety valve (2) comprises safety valve Connection Block (18), safety valve body (19), safety valve apocenosis mouth (20), safety valve discharging tube (21), safety valve pressure limiting spring (23) and safety valve seal bar (24);
The lower thread end of safety valve Connection Block (18) is connected with the safety valve tapped through hole on pressure-resistant flange dish (1), the upper thread end of safety valve Connection Block (18) is connected with the lower thread end of safety valve body (19), and the upper thread end of safety valve body (19) is connected with thread end under safety valve discharging tube (21); Safety valve seal bar (24) is arranged in the macropore of safety valve body (19) lower end, the cone of safety valve seal bar (24) lower end is equipped with the central through hole of safety valve Connection Block (18) lower end and connects for contacting, safety valve pressure limiting spring (23) is positioned between safety valve seal bar (24) upper surface and safety valve discharging tube (21) lower surface, and the internal thread hole of safety valve apocenosis mouth (20) and the upper end of safety valve discharging tube (21) are for being threaded.
6. according to calibrator for concrete penetrometer according to claim 5, it is characterized in that, the lower thread end of described safety valve discharging tube (21) is set with safety valve lock jack panel (22), and the lower surface of safety valve lock jack panel (22) contacts with the top end face of safety valve body (19) and connects.
7. according to calibrator for concrete penetrometer according to claim 1, it is characterized in that, described micrometering valve (4) is made up of with micrometering valve screw rod (12) micrometering valve Connection Block (9), fine setting valve body (10), micrometering valve handwheel (11);
The lower thread end of micrometering valve Connection Block (9) is connected with the micrometering valve tapped through hole on pressure-resistant flange dish (1), and the upper thread end of micrometering valve Connection Block (9) is connected with the lower end threaded hole of fine setting valve body (10); The top and bottom of fine setting valve body (10) endoporus are set to threaded hole, the stage casing of micrometering valve screw rod (12) is inserted in the threaded hole of fine setting valve body (10) upper end, the two is for being threaded, and micrometering valve handwheel (11) is arranged on the top of micrometering valve screw rod (12).
8. according to calibrator for concrete penetrometer according to claim 1, it is characterized in that, described blowdown valve (6) is made up of with pressure release mouth (17) blowdown valve Connection Block (13), pressure relief valve body (14), blowdown valve handwheel (15), blowdown valve screw rod (16);
The lower thread end of blowdown valve Connection Block (13) is connected with the blowdown valve tapped through hole on pressure-resistant flange dish (1), the upper thread end of blowdown valve Connection Block (13) is connected with the lower end threaded hole of pressure relief valve body (14), the top and bottom of pressure relief valve body (14) endoporus are set to threaded hole, the stage casing of blowdown valve screw rod (16) is inserted in the threaded hole of pressure relief valve body (14) upper end, the two is for being threaded, the conical surface of blowdown valve screw rod (16) bottom contacts with the inner orifice of blowdown valve Connection Block (13) or throws off, blowdown valve handwheel (15) is arranged on the top of blowdown valve screw rod (16), pressure release mouth (17) is threaded with the screw in pressure relief valve body (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210544545.XA CN103033457B (en) | 2012-12-14 | 2012-12-14 | Calibrator for concrete penetrometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210544545.XA CN103033457B (en) | 2012-12-14 | 2012-12-14 | Calibrator for concrete penetrometer |
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| Publication Number | Publication Date |
|---|---|
| CN103033457A CN103033457A (en) | 2013-04-10 |
| CN103033457B true CN103033457B (en) | 2015-06-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210544545.XA Expired - Fee Related CN103033457B (en) | 2012-12-14 | 2012-12-14 | Calibrator for concrete penetrometer |
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| Country | Link |
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| CN (1) | CN103033457B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104749080A (en) * | 2015-03-02 | 2015-07-01 | 云南省计量测试技术研究院 | Comprehensive calibration device for concrete impermeability instrument |
| CN110174341B (en) * | 2019-06-06 | 2024-04-26 | 交通运输部公路科学研究所 | Metering method and device for concrete impermeability instrument |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2773882B1 (en) * | 1998-01-22 | 2000-03-10 | Tabacs & Allumettes Ind | PERMEAMETER WITH WIDE MEASURING RANGE |
| KR100330647B1 (en) * | 1999-11-15 | 2002-03-29 | 김원경 | A equipment for microscopic hole measurement |
| CN201965073U (en) * | 2010-12-03 | 2011-09-07 | 安徽理工大学 | Comprehensive experimental device for testing permeability coefficient, water yield and water storage coefficient |
| CN102507407B (en) * | 2011-09-30 | 2013-02-06 | 西南石油大学 | Device and method for simultaneously measuring permeability coefficient, compressibility coefficient and porosity of rock |
| CN203037555U (en) * | 2012-12-14 | 2013-07-03 | 长春市计量检定测试技术研究院 | Cement concrete permeameter calibrator |
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| CN103033457A (en) | 2013-04-10 |
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