CN103033457A - Calibrator for concrete penetrometer - Google Patents
Calibrator for concrete penetrometer Download PDFInfo
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- CN103033457A CN103033457A CN201210544545XA CN201210544545A CN103033457A CN 103033457 A CN103033457 A CN 103033457A CN 201210544545X A CN201210544545X A CN 201210544545XA CN 201210544545 A CN201210544545 A CN 201210544545A CN 103033457 A CN103033457 A CN 103033457A
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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 cement concrete permeameter calibrating device.
Background technology
The applicant entrusts Ministry of Education Sci-tech Novelty Searching station (Z04) inquiry to have or not identical or similar bibliographical information both at home and abroad, takes passages wherein 3 pieces in closely related document, and it is as follows to quote the file of these background technologies of reflection as proof:
1. article name is " improvement of concrete impervious instrument self checking method "; The author is Zhang Kai, Zheng Guanghe, Zhou Yonghai etc.; Author 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 comprehensive scientific seminar of national water conservancy measurement technology; The article source is 296 pages～299 pages of water conservancy measurement technology selected papers (the 5th collection); Time is 2006;
Introduce employing infiltration method detection concrete impermeability in the article and reflected more intuitively concrete impermeability.The calibration interval of concrete impervious instrument are 1 year, need to be sending measurement verification department to carry out verification under the tensimeter dismounting during in the past to the calibration interval, time-consuming and fragile. adopt and in this paperly can not only completely examine the Anti-leakage instrument total system through improved self checking method, and efficient is high, not fragile.With 0.4 grade of precision pressure gauge through the metrological service verification as standard verification tensimeter, be installed to supporting on the processing work dish, again scratch diskette is installed on the Anti-leakage instrument worktable, set respectively according to rules and to be verified the Anti-leakage instrument force value and to carry out applied voltage test, detect set pressure and the error that shows pressure.
2. article name is " field calibration concrete penetrometer "; The author is Zheng Limin; Author unit is that the Lishui quality technical supervision detects institute; The article source is periodical " China's metering, CHINAMETROLOGY2007, (10) ", the 71st page.
Introduced electro connecting pressure gauge in the article and be used for showing the automatically control of test pressure value and pressure bound at concrete penetrometer, so the indicating value of the electro connecting pressure gauge main metering performance index that accurately is permeameter.Conventional way 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 is damaged tensimeter, copper pipe and web member easily.For addressing this problem, as long as install an X-over additional.Electro connecting pressure gauge just can carry out field calibration without dismounting.To be the M16 external thread be connected with water-filling nozzle on the permeameter pressure vessel one end of X-over, and the other end is that 0.4 grade of precision pressure gauge of M20 * 1.5 internal threads and (or rapid-acting coupling of middle adjunction) is connected.Thereby realized that master gauge and electro connecting pressure gauge are connected on the same pressure source.The field calibration operation steps: the one, close die trial by-pass valve control and No. 0 by-pass valve control.The 2nd, energising, startup power switch make pump working, open die trial by-pass valve control and No. 0 by-pass valve control discharge air, until without till the bubble; Rising water pressure on the pipeline, electro connecting pressure gauge and normal pressure gauge pressure raise thereupon.The 3rd, with reference to JJG52-1999 " General Manometer of Elastic Tube, pressure vacuum meter and vacuum meter " vertification regulation the pressure indicating value of permeameter is calibrated.
3. article name is " improvement of concrete impervious instrument detection method "; The author is Hu peace, left steel; The article source is 2012 of periodical " Shanghai metrology and measurement ", the 4th phase.
Introduced a kind of improvement of concrete impervious instrument detection method in the article, above die trial, install a blind flange with die trial top same size size additional, a high-precision digital pressure gauge is installed at the blind flange center, is used for the index of concrete impervious instrument pressure index and pressure control section is examined and determine.During calibrating, first the pressure controller preset pressure is pressurizeed by every 0.8MPa, control is incremented to 4MPa.
Annotate: cement concrete permeameter and Anti-leakage instrument are the same type instrument, and just the name of product of each manufacturer is different.
The problem that exists in the background technology:
1. accurate control survey pressure
Scratch diskette, blind flange or X-over that the background technology of the bibliographical information that retrieves is described all are single spare and accessory parts, function singleness, can not accurately control and detect the required gaging pressure of concrete infiltration (or impervious) instrument, the demonstration error of indication can not be stablized, the technical requirement of national verification rules can't be satisfied;
2. there is not safety valve
Do not have safety valve to be used for pressure overload pressure release, can not protect operating personnel's personal safety when superpressure danger occurring.
3. the instrument pressurization is slow, inefficiency
The pressure method that background technology is described, all be the pressure controller preset pressure by detected instrument concrete infiltration (or impervious) instrument and pressurize that because the impact of the circulation force (forcing) pump of tested instrument vibrations, the accuracy of measurement is not high, pressurization is slow, and efficient is low.
4, versatility is bad
The scratch diskette of description of the Prior Art, blind flange or X-over all are single spare and accessory parts, and its function is an interface unit, run into that size is inconsistent just cannot be used.
Summary of the invention
Technical matters to be solved by this invention is to have overcome accurately control survey pressure, instrument that prior art exists to pressurize that Slow Working efficient is low, versatility is bad and unsafe problem, a kind of cement concrete permeameter calibrating device is provided.
For solving the problems of the technologies described above, the present invention adopts following technical scheme to realize: described cement concrete permeameter calibrating device comprises pressure-resistant flange dish, safety valve, micrometering valve, pressure input end and blowdown valve.
The center of described pressure-resistant flange dish arranges a pressure input tapped through hole, is evenly equipped with safety valve tapped through hole, micrometering valve tapped through hole and blowdown valve tapped through hole around pressure input tapped through hole.The pressure input end is threaded with the pressure input tapped through hole at pressure-resistant flange disk center place, safety valve is threaded with safety valve tapped through hole on the pressure-resistant flange dish, micrometering valve is threaded with micrometering valve tapped through hole on the pressure-resistant flange dish, and blowdown valve is threaded with blowdown valve tapped through hole on the pressure-resistant flange dish.
Cement concrete permeameter calibrating device described in the 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 to be 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 the split fixed block is 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 be distributed on the pressure-resistant flange dish around, 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 adopts respectively the die trial bolt to be fixed on the die trial mount pad in 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 and the other end of No. 6 split fixed blocks adopt respectively fastening bolt to be connected the upper surface contact with the pressure-resistant flange dish to be connected.
No. 1 split fixed block described in the technical scheme, 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, be respectively arranged with two through holes on No. 5 split fixed blocks and No. 6 split fixed blocks, the axis of rotation of two through holes is parallel to each other and is vertical with the top end face of the split fixed block at its place, with the through hole of open slot vertical connection for No. 1 tapped through hole of fastening bolt is installed, another through hole is for installing No. 2 light through holes of die trial bolt.
No. 1 handle and No. 2 handles are installed on the upper surface of the pressure-resistant flange dish in the cement concrete permeameter calibrating device described in the technical scheme, No. 1 handle is identical with No. 2 grip structures, and No. 1 handle and No. 2 handles are installed in the periphery of pressure-resistant flange dish upper surface symmetrically.
Safety valve described in the 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 safety valve tapped through hole on the 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 thread end is connected with thread end under the safety valve discharging tube on the safety valve body; The safety valve seal bar is installed in the macropore of safety valve body lower end, the cone of safety valve seal bar lower end is connected for contacting with the central through hole of safety valve Connection Block lower end is equipped, safety valve pressure limiting spring is between safety valve seal bar upper surface and safety valve discharging tube lower surface, and the upper end of the internal thread hole of safety valve apocenosis mouth and safety valve discharging tube is for being threaded.
The lower thread end of the safety valve discharging tube described in the technical scheme is set with the safety valve lock jack panel, and the lower surface of safety valve lock jack panel is connected with the contact of the top end face of safety valve body.
Micrometering valve described in the technical scheme is comprised 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 micrometering valve tapped through hole on the pressure-resistant flange dish, and the upper thread end of micrometering valve Connection Block is connected with the lower end snail pit of fine setting valve body.For being threaded, the micrometering valve handwheel is installed in the top of micrometering valve screw rod in the hole of the insertion fine setting valve body upper end, lower end of micrometering valve screw rod.
Blowdown valve described in the technical scheme is comprised of blowdown valve Connection Block, pressure release 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 blowdown valve tapped through hole on the pressure-resistant flange dish, the upper thread end of blowdown valve Connection Block is connected with the lower end snail pit of pressure release valve body, insert in the hole of pressure release valve body upper end as being threaded the 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, the blowdown valve handwheel is installed in the top of blowdown valve screw rod, and the pressure release mouth is threaded with screw on the pressure release valve body.
Compared with prior art the invention has the beneficial effects as follows:
1. accurate control survey pressure satisfies the technical requirement of national verification rules
The foundation of the technical indicator of the at present cement concrete of China infiltration (or impervious) instrument product is the technical requirement of JT/T249-2009 " concrete impervious instrument ", and it requires the pressure display error of instrument and pressure set points error all should be not more than ± 0.015MPa.And generally be to be shown to 0.01MPa in infiltration (or impervious) the instrument pressure display part of usefulness at present, even have only be shown to 0.1MPa.
Prior art all is by detected instrument concrete impervious (or impervious) instrument pressure controller preset pressure and pressurizes, because the vibrations of the circulation force (forcing) pump of detected instrument have reached the impact of the longer build-up of pressure fluctuation of the pressure system pipeline of detected instrument, the pressure demonstration 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 be controlled and boost, the prior art that relies on detected instrument pressure controller to pressurize all can't satisfy the technical requirement that hysterisis error detects in the national verification rules.
Calibrating device of the present invention is to pressurize with external hydraulic pressure source by the pressure input end, pressure process can the real-time pressure indicating value that shows of reference standard manometer operate, when system's internal pressure is larger from setup pressure value, water potential source Quick-pressing, when force value during near setup pressure value, with the micrometering valve pressurization, control accuracy reaches 0.001MPa; Carry out the detection of hysterisis error by the control blowdown valve, satisfy the technical requirement that the error of indication and hysterisis error detect in the national verification rules fully.
2. pressure limiting design guarantees personnel's property safety
At present, the scratch diskette of the description of the Prior Art of the bibliographical information that retrieves, blind flange or X-over all are single spare and accessory parts, and its function is an interface unit, do not have the pressure limiting design, let alone the personnel of assurance property safety.Design aligners of the present invention has safety valve, and the overvoltage/overload of restriction system pressure guarantees personnel's property safety.
3. Quick-pressing design effort efficient is high
In real work, the technical requirement of cement concrete infiltration (or impervious) instrument product design is every 8 hours pressurization 0.1MPa, the pressure capacity that has determined instrument itself is limited, so pressurize by the controller that uses detected instrument, the pressing time that reaches setup pressure value is long.According to our on-the-spot measuring and calculating, according to the national verification rules, use art methods to finish the calibration of detected infiltration (or impervious) instrument, need the time more than 1 hour.Calibrating device of the present invention is to pressurize with external hydraulic pressure source by the pressure input end, and pressurization is rapid, and (system sealing is good in the well behaved situation of detected infiltration (or impervious) instrument, non-leakage, instrument shows normal), can finish in 20 interior minutes, work efficiency significantly improves.
4. composite design, versatility is good
The scratch diskette of description of the Prior Art, blind flange or X-over all are 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, each can move 6 split fixed blocks flexibly, so 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 be finished calibration operation.
Description of drawings
The present invention is further illustrated below in conjunction with accompanying drawing:
Fig. 1 is the axonometric projection graph that cement concrete permeameter calibrating device structure of the present invention forms;
Fig. 2 is the front view that the micrometering valve structure that adopts in the cement concrete permeameter calibrating device of the present invention forms;
Fig. 3 is the front view that the pressure-relief valve structure that adopts in the cement concrete permeameter calibrating device of the present invention forms;
Fig. 4 is the front view that the safety valve structure that adopts in the cement concrete permeameter calibrating device of the present invention forms;
Fig. 5 is the axonometric projection graph of infiltration (or impervious) instrument worktable, die trial mount pad, die trial, die trial bolt and die trial O-ring seal assembly relation in cement concrete infiltration (or impervious) instrument of the present invention;
Fig. 6 is pressure-resistant flange dish and the die trial mount pad in detected cement concrete infiltration (or impervious) instrument and the front view of die trial O-ring seal assembly relation in the cement concrete permeameter calibrating device of the present invention;
Among the figure: 1. pressure-resistant flange dish, 2. safety valve, 3.1 number handle, 4. micrometering valve, 5. pressure input end, 6. blowdown valve, No. 7.1 split fixed blocks, 8.1 number fastening bolt, 9. micrometering valve Connection Block, 10. fine setting valve body, 11. the micrometering valve handwheel, 12. micrometering valve screw rods, 13. blowdown valve Connection Blocks, 14. the pressure release valve body, 15. blowdown valve handwheels, 16. blowdown valve screw rods, 17. pressure release mouth, 18. the safety valve Connection Block, 19. safety valve bodies, 20. safety valve apocenosis mouths, 21. safety valve discharging tube, 22. the safety valve lock jack panel, 23. safety valve pressure limiting springs, 24. safety valve seal bar, 25. die trial mount pad, 26. infiltration (or impervious) instrument worktable, 27. die trials, 28. die trial clamp nuts, 29. the die trial bolt, 30. die trial O-ring seals.
Embodiment
Below in conjunction with accompanying drawing the present invention is explained in detail:
Consult Fig. 1, namely No. 1 handle 3 and No. 2 handles, micrometering valve 4, pressure input end 5, blowdown valve 6,6 identical split fixed block and 6 identical fastening bolts of structure of structure form cement concrete permeameter calibrating device of the present invention by the identical handle of pressure-resistant flange dish 1, safety valve 2,2 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 a pressure input tapped through hole that is used for setting pressure input end 5, being evenly equipped with 3 tapped through holes around the pressure input tapped through hole on the pressure-resistant flange dish 1 is safety valve tapped through hole, micrometering valve tapped through hole and blowdown valve tapped through hole, is respectively applied to mounting safety valve 2, micrometering valve 4 and blowdown valve 6.
Described 2 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 a font, No. 1 handle 3 that is a 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 installed in the inboard of the upper surface periphery of pressure-resistant flange dish 1 symmetrically.
Described 6 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, and 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, described 6 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 the split fixed block is 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 be distributed on pressure-resistant flange dish 1 around, one end of each split fixed block is provided with downward open slot, be provided with two through holes on each split fixed block, the axis of rotation of two through holes is parallel to each other and is vertical with the top end face of the split fixed block at two through hole places, with the through hole of open slot vertical connection be No. 1 tapped through hole, another through hole is No. 2 smooth through holes, and No. 2 smooth through hole is used for installing the die trial bolt 29 that namely inserts on infiltration (or impervious) instrument.Tighten the die trial clamp nut 28 that is sleeved on the 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 used for installing fastening bolt 8, the contact of upper surface that the bottom face of fastening bolt 8 is connected with the pressure-resistant flange dish connects, and by screwing fastening bolt 8 pressure-resistant flange dish 1 tightly is pressed on the die trial O-ring seal 30 on the die trial mount pad 25 in infiltration (or impervious) instrument.
Consult Fig. 4, described safety valve 2 is comprised 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 ends are provided with external thread, the 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 ends are provided with external thread, and the upper end is provided with internal thread, and the stage casing profile is hexagon, are provided with ladder hole along safety valve body 19 axial centers, and the diameter of bore of lower end is greater than the diameter of upper end tapped through hole.
Described safety valve apocenosis mouth 20 is that one (right side) end is provided with internal thread, the locking cap that is provided with through hole is held on another (left side).
The square tubular structure spare of described safety valve discharging tube 21 for 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, and the outer warp of annular fixing lug boss is less than externally threaded internal diameter.
Described safety valve lock jack panel 22 is hexagonal thin nut for profile.
Described safety valve pressure limiting spring 23 is cylindrical spiral stainless steel stage clip.
There are 60 degree cones described safety valve seal bar 24 lower ends, the upper end is the right cylinder that is provided with 2 axially extending bores, cylindrical diameter is greater than the maximum gauge of 60 degree cones, and the larger diameter internal bore of the barrel portion of safety valve seal bar 24 and safety valve body 19 lower ends is equipped for being slidingly matched.
The lower thread end of safety valve Connection Block 18 is connected with safety valve tapped through hole on the pressure- resistant flange dish 1, and 19 times thread end of the upper thread end of safety valve Connection Block 18 and safety valve body are connected, and 21 times thread end of thread end and safety valve discharging tube are connected on the safety valve body 19; Safety valve seal bar 24 is installed in the safety valve body 19 lower end large diameter holes, the upper aperture of the central through hole of the cone of safety valve seal bar 24 lower ends and safety valve Connection Block 18 lower ends is equipped, both connect for contact safety valve seal bar 24 under the effect of safety valve pressure limiting spring 23 pretightning forces, and safety valve pressure limiting spring 23 is installed between safety valve seal bar 24 upper surfaces and safety valve discharging tube 21 lower surfaces; Safety valve lock jack panel 22 is sleeved on the safety valve discharging tube 21, and the lower surface of safety valve lock jack panel 22 is connected with the contact of safety valve body 19 upper surfaces.
During spin safe valve discharging tube 21, safety valve discharging tube 21 can move up and down in the threaded hole of the upper end of safety valve body 19, thereby change the pressure of safety valve pressure limiting spring 23 elastic deformations, the spring pressure of safety valve pressure limiting spring 23 passes to safety valve seal bar 24; When the pressure of spring pressure greater than detected instrument system, safety valve 2 cut-offs, when the pressure of spring pressure less than detected instrument system, safety valve 2 is opened pressure release.
Need to adjust the valve body voltage limiting value before safety valve 2 is installed, 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 safety valve 2 is opened pressure release, guarantees personal security.
Described pressure input end 5 is comprised of pressure input end seat and input pressure flexible pipe connection.
The lower end of described pressure input end seat is provided with external thread, and the profile in stage casing is arranged to hexagon, and the upper end is provided with external thread and annular fixing lug boss, and annular fixing lug boss is positioned at externally threaded upper end, and the outer warp of annular fixing lug boss is less than externally threaded internal diameter; Be provided with central through hole along the axial of pressure input end seat and at pressure input end seat center line.
One (descending) of described input pressure flexible pipe connection end be provided with internal thread, another (on) end is provided with through hole and the lower end profile is arranged to hexahedral locking cap.
Thread end is connected with pressure input end tapped through hole on the pressure-resistant flange dish 1 under the pressure input end seat, and upper thread end is connected with input pressure flexible pipe connection.
Pressure input end 5 usefulness pressure hoses connect together the pressure output end in hydraulic pressure source with cement concrete permeameter calibrating device, the pressure that the hydraulic pressure source is produced is input in detected infiltration (or impervious) instrument pressure system, is used for the calibration of boosting of force value.
Consult Fig. 2, described micrometering valve 4 is comprised 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 ends are provided with external thread, and the stage casing profile is arranged to hexagon, and the upper end is provided with external thread, are provided with central through hole along the section center axially and within it of micrometering valve Connection Block 9.
Described fine setting valve body 10 inner upper/lower terminals are threaded hole, and the stage casing is the smooth through hole less than threaded hole; Outer upper ends is provided with external thread, and right cylinder is arranged in the stage casing, and hexahedron is arranged in the lower end.
Described micrometering valve screw rod 12 lower ends are cylinder, and the stage casing is screw rod, and there are little cubic positioning table and threaded rod in the upper end.
The lower thread end of micrometering valve Connection Block 9 is connected with micrometering valve tapped through hole on the 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 snail pits; For being threaded, micrometering valve handwheel 11 is installed in the top of micrometering valve screw rod 12 in micrometering valve screw rod 12 lower ends insertion fine setting valve body 10 upper end holes, and micrometering valve screw rod 12 can move up and down during rotary fine adjustment valve hand wheel 11.Micrometering valve screw rod 12 moves up, and the volume of airtight cavity increases, and the airtight cavity internal pressure descends; Micrometering valve screw rod 12 moves down, and the volume of airtight cavity reduces, and the airtight cavity internal pressure raises.
Consult Fig. 3, described blowdown valve 6 is comprised of with pressure release mouth 17 blowdown valve Connection Block 13, pressure release valve body 14, blowdown valve handwheel 15, blowdown valve screw rod 16.
Described blowdown valve Connection Block 13 lower ends are provided with external thread, and the stage casing profile is arranged to hexagon, and the upper end is provided with external thread, are provided with the Connection Block central through hole along the section center axially and within it of blowdown valve Connection Block 13.
The upper and lower end of described pressure release valve body 14 endoporus is arranged to threaded hole, and the smooth through hole less than threaded hole diameter is arranged in the stage casing; Outer upper ends is provided with external thread, and right cylinder is arranged in the stage casing, and hexahedron is arranged in the lower end.Pressure release valve body 14 lower end hexahedrons (right side) are provided with a threaded hole, and the axis of rotation of threaded hole is vertical with the axis of rotation of pressure release valve body 14.
Cylinder is arranged in described blowdown valve screw rod 16 lower ends, and screw rod is arranged in the stage casing, and little cubic positioning table and threaded rod are arranged in the upper end.The bottom of lower end is 60 degree cones.
Described pressure release mouth 17 1 (left side) end is provided with external thread, right cylinder is arranged in the stage casing, and another (right side) end is provided with annular fixing lug boss on the cone, also is provided with pressure release mouth central through hole on section's center line within it along the axial of pressure release mouth 17.
13 times thread end of blowdown valve Connection Block are connected with blowdown valve tapped through hole on the pressure-resistant flange dish 1, and thread end is connected with pressure release valve body 14 lower end snail pits on the blowdown valve Connection Block 13.The upper end hole of the lower end insertion pressure release valve body 14 of blowdown valve screw rod 16 is interior for being threaded, pressure release mouth 17 is threaded with (right side) screw on the pressure release valve body 14, blowdown valve handwheel 15 is installed in the top of blowdown valve screw rod 16, blowdown valve handwheel 15 turns clockwise, the conical surface of blowdown valve screw rod 16 bottoms can contact with the sealing of blowdown valve Connection Block 13 inner hole surface, and the water in the airtight cavity can not flow out; Be rotated counterclockwise blowdown valve handwheel 15, the conical surface of blowdown valve screw rod 16 bottoms separates with blowdown valve Connection Block 13 inner hole surface, and the water in the airtight cavity is flowed out by pressure release mouth 17, the pressure drop in the airtight cavity.
The principle of work of cement concrete permeameter calibrating device:
Cement concrete permeameter calibrating device is the detecting instrument according to the hydrostatics principle design.
1. the installation steps of cement concrete permeameter calibrating device:
Consult Fig. 5 and Fig. 6, when using cement concrete permeameter calibrating device calibration cement concrete infiltration (or impervious) instrument, at 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 cement concrete permeameter calibrating device 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 the die trial bolt 29, and fixing at die trial bolt 29 suit die trial clamp nuts 28; Vertical plane of symmetry that 8, No. 1 split fixed blocks 7 of fastening bolt, 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 installed 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 is the centre of gyration axis by pressure-resistant flange dish 1 all.Tighten respectively at last 8 fastening bolts 8, the upper surface contact that the bottom face of fastening bolt 8 is connected with the pressure-resistant flange dish connects, and by screwing fastening bolt 8 pressure-resistant flange dish 1 tightly is 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 cement concrete permeameter calibrating device:
1) detected cement concrete infiltration (or impervious) instrument preheating 10 minutes of should switching on before detection makes water be full of the groove of die trial mount pad 25 upper surfaces, closes the water inlet shutoff valve of die trial mount pad 25.Afterwards cement concrete permeameter calibrating device is fastened on the die trial mount pad 25 reliably, opens afterwards the water inlet shutoff valve of die trial mount pad 25.
2) by pressure input end 5, adopt pressure hose that the pressure output end in hydraulic pressure source is connected together with cement concrete permeameter calibrating device.
Pressure boosts by the manual water potential source reposefully since 0 when 3) calibrating, and take 0.2MPa as first calibration point, then every increase 0.2MPa calibrates a point, until 1.6MPa cut-out pressure source, withstand voltage 3min, the pressure indicating value does not have and obviously descends; Then by the steady step-down of former calibration point, each calibration point is carried out the step-down calibration.
Claims (8)
1. a cement concrete permeameter calibrating device is characterized in that, described cement concrete permeameter calibrating device comprises pressure-resistant flange dish (1), safety valve (2), micrometering valve (4), pressure input end (5) and blowdown valve (6);
The center of described pressure-resistant flange dish (1) arranges a pressure input tapped through hole, is evenly equipped with safety valve tapped through hole, micrometering valve tapped through hole and blowdown valve tapped through hole around pressure input tapped through hole; Pressure input end (5) is threaded with the pressure input tapped through hole of pressure-resistant flange dish (1) center, safety valve (2) is threaded with safety valve tapped through hole on the pressure-resistant flange dish (1), micrometering valve (4) is threaded with micrometering valve tapped through hole on the pressure-resistant flange dish (1), and blowdown valve (6) is threaded with blowdown valve tapped through hole on the pressure-resistant flange dish (1).
2. according to cement concrete permeameter calibrating device claimed in claim 1, it is characterized in that described cement concrete permeameter calibrating device 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 to be fixed on the 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 the split fixed block is 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 be 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, one end of No. 5 split fixed blocks and No. 6 split fixed blocks adopts respectively die trial bolt (29) to be fixed on the die trial mount pad (25) in the 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 the split fixed block adopts respectively fastening bolt (8) to be connected 1 with the pressure-resistant flange dish with the other end of No. 6 split fixed blocks) upper surface contact be connected.
3. according to cement concrete permeameter calibrating device claimed in claim 2, it is characterized in that, described No. 1 split fixed block (7), 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 (7), No. 2 split fixed blocks, No. 3 split fixed blocks, No. 4 split fixed blocks, be respectively arranged with two through holes on No. 5 split fixed blocks and No. 6 split fixed blocks, the axis of rotation of two through holes is parallel to each other and is vertical with the top end face of the split fixed block at its place, with the through hole of open slot vertical connection for No. 1 tapped through hole of fastening bolt (8) is installed, another through hole is for installing No. 2 smooth through holes of die trial bolt (29).
4. according to cement concrete permeameter calibrating device claimed in claim 1, it is characterized in that, No. 1 handle (3) and No. 2 handles are installed on the upper surface of the pressure-resistant flange dish (1) in the described cement concrete permeameter calibrating device, No. 1 handle (3) is identical with No. 2 grip structures, and No. 1 handle (3) and No. 2 handles are installed in the periphery of pressure-resistant flange dish (1) upper surface symmetrically.
5. according to cement concrete permeameter calibrating device claimed in 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 safety valve tapped through hole on the 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 the lower thread end of safety valve discharging tube (21); Safety valve seal bar (24) is installed in the macropore of safety valve body (19) lower end, the cone of safety valve seal bar (24) lower end is connected for contacting with the central through hole of safety valve Connection Block (18) lower end is equipped, 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 upper end of the internal thread hole of safety valve apocenosis mouth (20) and safety valve discharging tube (21) is for being threaded.
6. according to cement concrete permeameter calibrating device claimed in 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) is connected with the top end face contact of safety valve body (19).
7. according to cement concrete permeameter calibrating device claimed in claim 1, it is characterized in that described micrometering valve (4) is comprised 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 micrometering valve tapped through hole on the pressure-resistant flange dish (1), and the upper thread end of micrometering valve Connection Block (9) is connected with the lower end snail pit of fine setting valve body (10); It is interior for being threaded that the upper end hole of finely tuning valve body (10) is inserted in the lower end of micrometering valve screw rod (12), and micrometering valve handwheel (11) is installed in the top of micrometering valve screw rod (12).
8. according to cement concrete permeameter calibrating device claimed in claim 1, it is characterized in that described blowdown valve (6) is comprised of with pressure release mouth (17) blowdown valve Connection Block (13), pressure release 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 blowdown valve tapped through hole on the pressure-resistant flange dish (1), the upper thread end of blowdown valve Connection Block (13) is connected with the lower end snail pit of pressure release valve body (14), insert in the hole of pressure release valve body (14) upper end as being threaded the lower end of blowdown valve screw rod (16), 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 installed in the top of blowdown valve screw rod (16), and pressure release mouth (17) is threaded with screw on the pressure release 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 |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210544545.XA CN103033457B (en) | 2012-12-14 | 2012-12-14 | Calibrator for concrete penetrometer |
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| CN103033457B CN103033457B (en) | 2015-06-10 |
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| 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 |
| CN110174341A (en) * | 2019-06-06 | 2019-08-27 | 交通运输部公路科学研究所 | A kind of metering method and device of concrete impervious instrument |
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| 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 |
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| CN103033457B (en) | 2015-06-10 |
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