CN208953417U - A kind of calibrating apparatus of pore pressure gauge - Google Patents
A kind of calibrating apparatus of pore pressure gauge Download PDFInfo
- Publication number
- CN208953417U CN208953417U CN201821705473.1U CN201821705473U CN208953417U CN 208953417 U CN208953417 U CN 208953417U CN 201821705473 U CN201821705473 U CN 201821705473U CN 208953417 U CN208953417 U CN 208953417U
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- Prior art keywords
- pressure
- pressure gauge
- water
- gland
- pore
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- 239000011148 porous material Substances 0.000 title claims abstract description 63
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 86
- 210000004907 gland Anatomy 0.000 claims abstract description 38
- 238000000034 method Methods 0.000 claims abstract description 14
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- Measuring Fluid Pressure (AREA)
Abstract
The utility model discloses a kind of calibrating apparatus of pore pressure gauge, it is related to marine traffic engineering field of measuring techniques, its key points of the technical solution are that: tank is pressed including surveying, pore pressure gauge and master gauge, it further include water pressurizing device, it is connected with the water inlet pipe connecting with water source on the water pressurizing device and presses tank connected outlet pipe with surveying, the pressure tank of surveying includes the internal gland for offering the survey wedge of pressure chamber and be set on survey wedge, the outlet pipe and master gauge are all set on gland, the outlet pipe extends to the bottom position of pressure chamber, mounting hole is provided on the gland, data connecting line for connecting with pore pressure gauge is installed on the mounting hole, one end of the data connecting line is connected with measuring instrument.It flows by using the mode of water pressurization and to pressure chamber bottom, can be avoided the water surface and generate exciting phenomenon, pore pressure gauge is avoided to swing, realize the effect for improving the accuracy of assay calibration result.
Description
Technical field
The utility model relates to marine traffic engineering field of measuring techniques, and more specifically it is related to a kind of pore pressure gauge
Calibrating apparatus.
Background technique
Pore pressure gauge is also commonly referred to as osmometer, refers to for measuring structures internal void water pressure or osmotic pressure
Sensor.Measured data can evaluation of subterranean water flow the case where and for designing and monitor following items: water conservancy project fabrication,
Basis and retaining wall, dam and dyke, side slope and excavation project, tunnel and underground engineering, waste from stacking field.Pore pressure gauge
The accuracy of measurement numerical value has large effect for the quality of engineering project, so for the stability for guaranteeing pore pressure gauge
And reliability, it usually needs that the sensor of pore pressure gauge is tested and examined and determine before use.
The calibrating of existing pore pressure gauge is according to " JJG (traffic) 029-2004 marine traffic engineering steel chord type pore water pressure
Count vertification regulation " it carries out.The pressure gauge scale that standard is generallyd use during assay calibration is tested with pressure tank is surveyed, and is led to
It crosses and is surveying injection 3-5cm water in pressure tank, for being saturated pore pressure gauge, then pore pressure gauge is placed in survey pressure tank
Water in, and according to test plan classification apply positive pressure, apply positive pressure be by air delivering pipeline to survey pressure tank in be passed through compressed gas
Body records data later and carries out subsequent analysis, passes through the pressure of analytical standard pressure gauge scale and pore pressure gauge feedback
The difference of force value carries out assay calibration to pore pressure gauge.But pressurized with compressed air is utilized, it will lead in survey pressure tank
Ringing effect occurs for the water surface, and pore pressure gauge will occur significantly to swing with the water surface, affects pore pressure gauge calibrating
Accuracy.
Utility model content
In view of the deficienciess of the prior art, the purpose of this utility model is to provide a kind of calibratings of pore pressure gauge
Calibrating installation has the effect of improving the accuracy of assay calibration result.
To achieve the above object, the utility model provides following technical solution:
A kind of calibrating apparatus of pore pressure gauge, including surveying pressure tank, being set to the pore water pressure surveyed in pressure tank
Count and be set to the master gauge surveyed and pressed on tank, it is characterised in that: further include tank connected for pressing tank to survey with survey pressure
It is interior to increase stressed water pressurizing device, it is connected with the water inlet pipe connecting with water source on the water pressurizing device and connects with pressure tank is surveyed
The outlet pipe connect, the survey pressure tank include that inside offers the survey wedge of pressure chamber and is set on survey wedge and is used to seal
The gland of pressure chamber, the outlet pipe and master gauge are set on gland, and the outlet pipe extends to the bottom of pressure chamber
At portion position, it is additionally provided with mounting hole on the gland, is equipped on the mounting hole for being connect with pore pressure gauge
Data connecting line, the data connecting line are connected with far from one end of pore pressure gauge for showing and recording pore water pressure
Count the measuring instrument of the pressure value of feedback.
So set, by the way that pore pressure gauge is placed in pressure chamber, and by itself and the data connection on mounting hole
Line connection, the pressure value that pore pressure gauge is fed back show and record on measuring instrument.Control gland will press later
Power chamber sealing, so that pressure chamber is in air-tight state, thus by control water pressurizing device, so that the water inlet pipe connecting with water source
Interior water flows into outlet pipe, and as outlet pipe feed pressure is intracavitary, to hydraulic pressure is applied in pressure chamber, improves in pressure chamber
Pressure stops adding water at this time, to measure the pressure feedback under pore pressure gauge static state until pore pressure gauge is saturated by water
Value, and it is contrasted into analysis with master gauge, obtain the test and calibrating situation of pore pressure gauge under static state.Then,
By controlling water pressurizing device, hydraulic pressure is applied into pressure chamber with duration, the pressure in pressure chamber is gradually increased, analyzes at this time
The difference between numerical value that master gauge and measuring instrument are shown, to obtain the test and calibrating feelings of the lower pore pressure gauge of dynamic
Condition.By the way that outlet pipe to be extended to the bottom position of pressure chamber, when so that measuring in the dynamic case, water pressurizing device is to out
Water is added in water pipe, and the water in outlet pipe is flowed by the bottom of pressure chamber, avoids the water surface from generating exciting phenomenon, avoids pore water pressure
Power meter is swung, and realizes the effect for improving the accuracy of assay calibration result.
Further setting: the water pressurizing device is provided for the manual examination being pumped into the water in water inlet pipe in outlet pipe
Press pump.
So set, carrying out pumping water by using manual pressure test pump, so that staff controls manual pressure test pump
Water in water inlet pipe is pumped into outlet pipe, and as outlet pipe is sent into pressure chamber, convenient for slowly providing hydraulic pressure, to avoid pressure
The intracavitary water surface vibration of power improves the accuracy of assay calibration result so that pore pressure gauge is in stable state.
Further setting: the gland is provided with seal washer on the surface for surveying wedge, and the mounting hole uses ring
The sealing of oxygen resin material.
So set, leakproofness when gland sealed pressure chamber is improved by the seal washer of setting, likewise, installation
It is sealed on hole using epoxide resin material, can be avoided mounting hole influences the leakproofness of pressure chamber, guarantees in pressure chamber in close
Envelope state is pressurizeed with stabilization, improves the accuracy of assay calibration result.
Further setting: water valve is provided at the position of the outlet pipe connection gland.
So set, so that opening water valve when needing to pressurize, being surveyed so that the water in outlet pipe flows by the water valve of setting
In wedge, when needing pressure stabilizing and measuring pressure value, water valve is closed, to avoid the pressure feedback surveyed in wedge to outlet pipe
It is interior, guarantee the intensity of pressure surveyed in wedge, improves the accuracy of assay calibration result.
Further setting: the master gauge uses digital precision pressure meter.
So set, the precision of digital precision pressure meter is higher, the pressure value measured is more accurate, to improve calibrating
The accuracy of calibration result.
Further setting: the measuring instrument uses multi-functional process instrument calibrator.
So set, multi-functional process instrument calibrator is powerful and easy-to-use field calibration device, survey is used
Any procedure parameter almost can be tested and be calibrated to amount or output function, be capable of the demand of compound pore water pressure machine, improve inspection
Determine the accuracy of calibration result.
Further setting: the hydraulic pressure pressure gauge for detecting hydraulic pressure in outlet pipe is provided on the outlet pipe.
So set, the pressure condition on outlet pipe can be measured by the hydraulic pressure pressure gauge of setting, it is convenient for staff
Moulding pressure value is observed, to be adjusted correspondingly.
Further setting: the bottom for surveying wedge is provided with the drainage hole being connected to pressure chamber, sets on the drainage hole
It is equipped with drain valve.
So set, by the drainage hole of setting, so that will be surveyed in wedge after assay calibration by opening drain valve
Water discharge, facilitate discharge survey wedge in water body.
Further setting: being provided with connection edge at the top of the survey wedge, the gland and connection are arranged useful between
It connects in gland to be lock onto along upper locking assembly.
So set, by the connection edge of setting, so that gland is fixed with edge connect by locking assembly, thus general
Gland, which is fixed on, to be surveyed on wedge, and gland by the locking of control locking assembly or need to only be unclamped, be mentioned in the dismounting surveyed on wedge
The convenience of high gland dismounting.
Further setting: the locking assembly includes multiple bolt and one-to-one correspondence for wearing overpressure cap and connecting edge
In the nut of bolt, the bolts and nuts are threadedly coupled, and circumferentially shape is evenly arranged on gland multiple bolts.
So set, installation when, by by bolt wear overpressure cap and connection edge, locked followed by nut,
Gland can be fixed on to connection along upper, and locked using multiple bolts and nuts, improve gland it is fixed after stability.
By using above-mentioned technical proposal, the utility model is compared compared with the prior art, is had the advantage that
1, by using water pressuring method, the operating mode of pore pressure gauge can be simulated, rapidly and efficiently completes calibrating
Calibration process, and the accuracy of assay calibration result is higher；
2, by the way that the outlet pipe surveyed in pressure tank to be extended to the bottom position of pressure chamber, thus in the mistake using water pressurization
Cheng Zhong avoids the water surface from generating exciting phenomenon, pore pressure gauge is avoided to swing, and realizes the accuracy for improving assay calibration result
Effect；
3, by the seal washer of setting, the sealing performance for surveying pressure tank is improved, improves the accuracy of assay calibration result.
Detailed description of the invention
Fig. 1 is the structural schematic diagram in the positive apparent direction of calibrating apparatus of pore pressure gauge；
Fig. 2 is that the calibrating apparatus of pore pressure gauge surveys the perspective view of the explosion at pressure tank；
Fig. 3 is that the calibrating apparatus of pore pressure gauge looks up structural schematic diagram on direction.
In figure: 1, surveying pressure tank；11, wedge is surveyed；111, pressure chamber；112, drainage hole；113, drain valve；114, edge is connected；
12, gland；121, mounting hole；2, pore pressure gauge；3, master gauge；4, water pressurizing device；5, water inlet pipe；6, it is discharged
Pipe；61, water valve；62, hydraulic pressure pressure gauge；7, data connecting line；8, measuring instrument；9, seal washer；10, locking assembly；101, spiral shell
Bolt；102, nut.
Specific embodiment
It is described further referring to figs. 1 to calibrating apparatus of the Fig. 3 to pore pressure gauge.
A kind of calibrating apparatus of pore pressure gauge, as shown in Figure 1, including surveying pressure tank 1, being set in survey pressure tank 1
Pore pressure gauge 2, be fixedly installed on survey pressure tank 1 on master gauge 3 and with survey pressure tank 1 connect and for survey pressure
Increase stressed water pressurizing device 4 in tank 1.
As shown in Figure 1, master gauge 3 specifically uses digital precision pressure meter, it is mainly used for tester instrument.It is micro-
Power consumption, accuracy be high, high definition digital liquid crystal indication, small in size, easy to operate, measure convenient for field-checking and precision pressure
When using intelligence calibration, it is linear repair, magnetic pen induction zeroing in two seconds, liquid crystal display has dynamic pressure value display function, directly
Display pressure percentage is seen, the needs of calibrating pore pressure gauge 2 can be reached.
As depicted in figs. 1 and 2, surveying pressure tank 1 includes that inside offers the survey wedge 11 of pressure chamber 111 and is set to survey pressure
Gland 12 on seat 11 and for sealed pressure chamber 111.The cross section for surveying wedge 11 is in I-shaped setting, wherein is surveying wedge
11 top, which extends outwardly, is provided with connection along 114, and gland 12 and connection are provided with for gland 12 to be lock between 114
Connect the locking assembly 10 on 114.In order to improve the leakproofness after 12 confining pressure chamber 111 of gland, in gland 12 close to survey
Seal washer 9 is fixedly installed on the surface of wedge 11.
As shown in Fig. 2, specifically, locking assembly 10 wears overpressure cap 12 and connection along 114 bolt 101 including multiple
And correspond in the nut 102 of bolt 101, each bolt 101 is threadedly coupled with each nut 102 respectively, and multiple spiral shells
Circumferentially shape is evenly arranged on gland 12 bolt 101, and the present embodiment is specifically configured to six, so as to utilize six bolts
101 are locked with nut 102, improve gland 12 and are fixed on the stability connected on 114.
As depicted in figs. 1 and 2, it is additionally provided with mounting hole 121 on gland 12, data connecting line is installed on mounting hole 121
7.Wherein, one end of data connecting line 7 protrude into pressure chamber 111 and with pore pressure gauge 2, the other end is pierced by pressure chamber 111
Outside and it is connected with measuring instrument 8, measuring instrument 8 is used to show and record the pressure value of pore water pressure machine feedback, specifically, can will survey
It measures instrument 8 and uses multi-functional process instrument calibrator, specifically use the multi-functional process instrument calibrator of GXS-937A, be powerful
With easy-to-use field calibration device, any procedure parameter almost can be tested and calibrate using measurement or output function.Frequency
Measurement range: (500-4000) Hz, resolving power 0.01Hz, frequency measurement relative error ± 0.5% can reach calibrating pore water pressure
The needs of power meter 2.Meanwhile in order to avoid mounting hole 121 influences the leakproofness in pressure chamber 111, it is installed in data connecting line 7
After on mounting hole 121, mounting hole 121 is sealed using epoxide resin material.
As depicted in figs. 1 and 2, water inlet pipe 5 and outlet pipe 6, one end connection of water inlet pipe 5 are provided on water pressurizing device 4
At water source, the other end is fixedly connected on water pressurizing device 4, and one end of outlet pipe 6 is fixedly connected on water pressurizing device 4,
The other end is fixedly connected on the gland 12 for surveying pressure tank 1 and protrudes into the bottom position of pressure chamber 111.Further, by water plus
Pressure device 4 is provided for the manual pressure test pump being pumped into the water in water inlet pipe 5 in outlet pipe 6, by manually controlling manual examination
Press pump pumps the water in water inlet pipe 5 to outlet pipe 6, so that hydraulic pressure be added into pressure chamber 111 by outlet pipe 6.
As shown in Figure 1, being provided at the position of water pressurizing device 4 for detecting hydraulic pressure in outlet pipe 6 in outlet pipe 6
Hydraulic pressure pressure gauge 62, convenient for observation outlet pipe 6 in pressure value, to make corresponding adjustment.In outlet pipe 6 close to gland 12
It is provided with water valve 61 at position, the opening and closing of outlet pipe 6 can be controlled by water valve 61, is convenient for assay calibration.
As shown in figure 3, being provided with the drainage hole 112 being connected to pressure chamber 111, drainage hole 112 in the bottom for surveying wedge 11
On be provided with drain valve 113, can by open drain valve 113 by pressure chamber 111 water be discharged, convenient in assay calibration it is laggard
Row draining pressure release.
Working principle: by controlling manual pressure test pump, the hydraulic pressure in water inlet pipe 5 is entered in outlet pipe 6, and by outlet pipe 6
In feed pressure chamber 111, to improve the pressure in pressure chamber 111, and pass through standard pressure to hydraulic pressure is applied in pressure chamber 111
Power table 3 reads the pressure applied in pressure chamber 111.Later by observation measuring instrument 8, pore pressure gauge under different pressures is read
2 frequency values, and working curve is calculated using the method for straight line fitting, and compare with standard pressure gauge reading, calculate hole
The error of indication of water pressure gauge 2 realizes the test and calibrating situation of pore pressure gauge 2.Utilizing manual pressure test pump pressurization
In the process, since outlet pipe 6 extends to the bottom of pressure chamber 111, so that water flows into pressure chamber 111 during pressurization
Bottom avoids the water surface from generating exciting phenomenon, and pore pressure gauge 2 is avoided to swing, and realizes the accuracy for improving assay calibration result
Effect.
The above is only the preferred embodiment of the utility model, and the protection scope of the utility model is not limited merely to
Above-described embodiment, technical solution belonging to the idea of the present invention belong to the protection scope of the utility model.It should refer to
Out, for those skilled in the art, it is without departing from the principle of the utility model it is several improvement and
Retouching, these improvements and modifications also should be regarded as the protection scope of the utility model.
Claims (10)
1. a kind of calibrating apparatus of pore pressure gauge, including surveying pressure tank (1), being set to the pore water surveyed in pressure tank (1)
Pressure gauge (2) and the master gauge (3) being set in survey pressure tank (1), it is characterised in that: further include connecting with survey pressure tank (1)
Connect for increasing stressed water pressurizing device (4) in pressure tank (1) to surveying, be connected on the water pressurizing device (4) and water source
The water inlet pipe (5) of connection and the outlet pipe (6) connecting with survey pressure tank (1), survey pressure tank (1) includes that inside offers pressure
The survey wedge (11) of chamber (111) and the gland (12) for being set in survey wedge (11) and being used for sealed pressure chamber (111), it is described
Outlet pipe (6) and master gauge (3) are all set on gland (12), and the outlet pipe (6) extends to pressure chamber (111)
Bottom position is additionally provided with mounting hole (121) on the gland (12), is equipped with and is used for and hole on the mounting hole (121)
The data connecting line (7) of gap water pressure gauge (2) connection, the data connecting line (7) connect far from the one end of pore pressure gauge (2)
It is connected to the measuring instrument (8) of the pressure value for showing and recording pore pressure gauge (2) feedback.
2. a kind of calibrating apparatus of pore pressure gauge according to claim 1, it is characterised in that: the water pressurization
Device (4) is provided for the manual pressure test pump being pumped into the water in water inlet pipe (5) in outlet pipe (6).
3. a kind of calibrating apparatus of pore pressure gauge according to claim 1, it is characterised in that: the gland
(12) it is provided with seal washer (9) on the surface for surveying wedge (11), the mounting hole (121) is close using epoxide resin material
Envelope.
4. a kind of calibrating apparatus of pore pressure gauge according to claim 1, it is characterised in that: the outlet pipe
(6) it connects and is provided with water valve (61) at the position of gland (12).
5. a kind of calibrating apparatus of pore pressure gauge according to claim 1, it is characterised in that: the standard pressure
Power table (3) uses digital precision pressure meter.
6. a kind of calibrating apparatus of pore pressure gauge according to claim 1, it is characterised in that: the measuring instrument
(8) multi-functional process instrument calibrator is used.
7. a kind of calibrating apparatus of pore pressure gauge according to claim 1, it is characterised in that: the outlet pipe
(6) the hydraulic pressure pressure gauge (62) for detecting outlet pipe (6) interior hydraulic pressure is provided on.
8. a kind of calibrating apparatus of pore pressure gauge according to claim 1, it is characterised in that: the survey wedge
(11) bottom is provided with the drainage hole (112) being connected to pressure chamber (111), is provided with drain valve on the drainage hole (112)
(113).
9. a kind of calibrating apparatus of pore pressure gauge according to claim 1, it is characterised in that: the survey wedge
(11) connection is provided at the top of along (114), the gland (12) is provided with for by gland (12) with connecting between edge (114)
It lock onto locking assembly (10) of the connection on (114).
10. a kind of calibrating apparatus of pore pressure gauge according to claim 9, it is characterised in that: the locking
Component (10) includes multiple bolts (101) for wearing overpressure cap (12) and connection edge (114) and corresponds in bolt
(101) nut (102), the bolt (101) are threadedly coupled with nut (102), and circumferentially shape is equal for multiple bolts (101)
It is even to be arranged on gland (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821705473.1U CN208953417U (en) | 2018-10-20 | 2018-10-20 | A kind of calibrating apparatus of pore pressure gauge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821705473.1U CN208953417U (en) | 2018-10-20 | 2018-10-20 | A kind of calibrating apparatus of pore pressure gauge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208953417U true CN208953417U (en) | 2019-06-07 |
Family
ID=66742220
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821705473.1U Expired - Fee Related CN208953417U (en) | 2018-10-20 | 2018-10-20 | A kind of calibrating apparatus of pore pressure gauge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208953417U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110285837A (en) * | 2019-07-22 | 2019-09-27 | 湖南省计量检测研究院 | Differential hydrostatic level calibrating installation and calibration method |
-
2018
- 2018-10-20 CN CN201821705473.1U patent/CN208953417U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110285837A (en) * | 2019-07-22 | 2019-09-27 | 湖南省计量检测研究院 | Differential hydrostatic level calibrating installation and calibration method |
| CN110285837B (en) * | 2019-07-22 | 2023-10-27 | 湖南省计量检测研究院 | Differential pressure type static level calibrating device and calibrating method |
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| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190607 Termination date: 20201020 |
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| CF01 | Termination of patent right due to non-payment of annual fee |