CN203519252U - Calibration apparatus for calibrating soil pressure sensor by using fluid - Google Patents
Calibration apparatus for calibrating soil pressure sensor by using fluid Download PDFInfo
- Publication number
- CN203519252U CN203519252U CN201320639579.7U CN201320639579U CN203519252U CN 203519252 U CN203519252 U CN 203519252U CN 201320639579 U CN201320639579 U CN 201320639579U CN 203519252 U CN203519252 U CN 203519252U
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- pressure sensor
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- soil pressure
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- way pipe
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- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The utility model discloses a calibration apparatus for calibrating a soil pressure sensor by using fluid. The calibration apparatus is structured through the following manners that: a pressurizing hole and a water injection hole are formed in the top of a pressure cover; the pressurizing hole is connected with a first port of a three-way pipe at the exterior of the pressure cover; a second port of the three-way pipe is connected with a precision pressure gauge; a third port of the three-way pipe is connected with an air compressor through a pressure adjusting valve; a flange at the bottom of the pressure cover is connected with a base ring through a bolt; a rubber film and an O-shaped sealing ring are arranged between the flange and the base ring; the inner peripheral surface of the base ring is in threaded connection with the outer peripheral surface of a base disc; the center of the upper surface of the base disc is provided with a groove used for accommodating the soil pressure sensor; the groove is communicated with a vertically linear groove at the outer peripheral surface of the base disc through a horizontally linear groove of the upper surface of the base disc at a radial direction; and the lower surface of the base disc is provided with an inner hexagonal hole used in disassembly. The calibration apparatus is advantageous in accurate and reliable calibration results. When the calibration apparatus is adopted to perform calibration, a fluid medium will not enter the soil pressure sensor, and therefore, the success rate of a calibration test is high, and the soil pressure sensor will not be damaged.
Description
Technical field
The utility model relates to a kind of calibration facility of demarcating soil pressure sensor with fluid.
Background technology
Soil pressure sensor is widely used in the earth pressure test of the earth structures such as roadbed, retaining wall, dam body and tunnel.Soil pressure sensor needs to demarcate before use, to grasp the relation between input pressure and output signal, to improve accuracy and the reliability of test.
The demarcation of soil pressure sensor, a kind of is to adopt the mode that applies solid loading to carry out, and soil pressure sensor is applied the solid loading of standard weights, and its output valve is demarcated.The problem that this method exists is, be difficult to guarantee soil pressure sensor everywhere stressed evenly, cause calibration result deviation larger; Particularly outstanding for this problem of monofilm formula soil pressure sensor.The another kind of mode of non-solid pressurization that adopts is carried out, and is about to soil pressure sensor and puts into fluid media (medium), and the pressure being subject in fluid media (medium) by the soil pressure sensor of predicting or calculating, demarcates its output valve.This method can guarantee that soil pressure sensor is stressed even everywhere, but can be because the sealing property of soil pressure sensor is not enough, and fluid media (medium) enters soil pressure sensor inside, causes demarcating inefficacy, even damages soil pressure sensor.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of calibration facility of demarcating soil pressure sensor with fluid, and the calibration result of this calibration facility accurately, reliably; Timing signal fluid media (medium) can not enter soil pressure sensor inside, and the success ratio of rating test is high, can not damage soil pressure sensor.
The utility model solves its technical matters, and the technical scheme adopting is that a kind of calibration facility of demarcating soil pressure sensor with fluid, is characterized in that:
Pressure shield top is provided with water injection hole and pressurization hole, water injection hole seals with sealing-plug, pressurization hole is connected with the first port of three-way pipe outside pressure shield, the second port of three-way pipe is connected with precision pressure gauge, the 3rd port of three-way pipe is connected with the output terminal of pressure regulator valve, and the input end of pressure regulator valve is connected with air compressor;
The ring flange of described pressure shield bottom is connected with base ring by bolt, and is lined with rubber membrane and O RunddichtringO between ring flange and base ring;
The described inner peripheral surface of base ring and the outer peripheral face of base disk are threaded, base disk upper surface center is useful on the groove of placing soil pressure sensor, this groove is communicated with the vertical line groove of base disk outer peripheral face by base disk upper surface horizontal cable trough radially, and base disk lower surface center is useful on the inner hexagonal hole of dismounting.
Using method of the present utility model is:
Unclamp being connected of ring flange and base ring, the soil pressure sensor of intending demarcating is placed in to the groove of base disk, and the wire of soil pressure sensor is drawn by horizontal cable trough, vertical line groove, then rotating base dish, make its upper surface and base ring upper surface flush.Subsequently O-ring seal and rubber membrane are covered on base disk and base ring, then by bolt, base ring are closely connected with the ring flange of pressure shield.Water injection hole by pressure shield floods rubber membrane completely to injecting distilled water in pressure shield, then water injection hole is sealed with sealing-plug.
Start air compressor, by pressure regulator valve and in conjunction with precision pressure gauge, make air pressure in pressure shield reach the set pressure of rating test, can carry out rating test.
Compared with prior art, the beneficial effects of the utility model are:
The air pressure being produced by air compressor in the pressure shield of sealing acts on the liquid of injection, and convert fluid pressure to, be evenly applied on soil pressure sensor, the inhomogeneous problem of soil pressure sensor pressurized of having avoided solid loading formula calibration facility to cause, calibration result error is little.Owing to installing between the base disk of soil pressure sensor and pressure shield, be provided with rubber membrane, rubber membrane has good pliability, fluid pressure can be passed to soil pressure sensor well, does not disturb calibration result; Meanwhile, rubber membrane separates fluid media (medium) and soil pressure sensor, and timing signal fluid media (medium) can not enter soil pressure sensor inside, and the success ratio of rating test is high, can not damage soil pressure sensor.
The diameter of above-mentioned rubber membrane is greater than the diameter of O RunddichtringO.
Like this, can guarantee that the sealing between pressure shield and base disk and outer disk is good.
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model embodiment.
Embodiment
Fig. 1 illustrates, and a kind of embodiment of the present utility model is, a kind of calibration facility of demarcating soil pressure sensor with fluid, and its composition is:
Pressure shield 1 top is provided with water injection hole 1a and pressurization hole 1b, sealing-plug 2 sealings for water injection hole 1a, pressurization hole 1b is connected with the first port of three-way pipe 3 outside pressure shield 1, the second port of three-way pipe 3 is connected with precision pressure gauge 4, the 3rd port of three-way pipe 3 is connected with the output terminal of pressure regulator valve 5, and the input end of pressure regulator valve 5 is connected with air compressor 6;
The ring flange 1c of described pressure shield 1 bottom is connected with base ring 7 by bolt 7a, and is lined with rubber membrane 8 and O RunddichtringO 9 between ring flange 1c and base ring 7;
The inner peripheral surface of described base ring 7 is threaded with the outer peripheral face of base disk 10, base disk 10 upper surface centers are useful on the groove 10a that places soil pressure sensor, this groove 10a is communicated with the vertical line groove 10b of base disk 10 outer peripheral faces by base disk 10 upper surfaces horizontal cable trough 10c radially, and base disk 10 lower surface centers are useful on the inner hexagonal hole 10d of dismounting.
The diameter of this routine rubber membrane 8 is greater than the diameter of O RunddichtringO 9.
Claims (2)
1. with fluid, demarcate a calibration facility for soil pressure sensor, it is characterized in that:
Pressure shield (1) top is provided with water injection hole (1a) and pressurization hole (1b), sealing-plug (2) sealing for water injection hole (1a), the first port of the three-way pipe (3) that pressurization hole (1b) is outer with pressure shield (1) is connected, the second port of three-way pipe (3) is connected with precision pressure gauge (4), the 3rd port of three-way pipe (3) is connected with the output terminal of pressure regulator valve (5), and the input end of pressure regulator valve (5) is connected with air compressor (6);
The ring flange (1c) of described pressure shield (1) bottom is connected with base ring (7) by bolt (7a), and is lined with rubber membrane (8) and O RunddichtringO (9) between ring flange (1c) and base ring (7);
The inner peripheral surface of described base ring (7) is threaded with the outer peripheral face of base disk (10), base disk (10) upper surface center is useful on the groove (10a) of placing soil pressure sensor, this groove (10a) is communicated with the vertical line groove (10b) of base disk (10) outer peripheral face by base disk (10) upper surface horizontal cable trough (10c) radially, and base disk (10) lower surface center is useful on the inner hexagonal hole (10d) of dismounting.
2. a kind of calibration facility of demarcating soil pressure sensor with fluid according to claim 1, is characterized in that: the diameter of described rubber membrane (8) is greater than the diameter of O RunddichtringO (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320639579.7U CN203519252U (en) | 2013-10-17 | 2013-10-17 | Calibration apparatus for calibrating soil pressure sensor by using fluid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320639579.7U CN203519252U (en) | 2013-10-17 | 2013-10-17 | Calibration apparatus for calibrating soil pressure sensor by using fluid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203519252U true CN203519252U (en) | 2014-04-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320639579.7U Expired - Fee Related CN203519252U (en) | 2013-10-17 | 2013-10-17 | Calibration apparatus for calibrating soil pressure sensor by using fluid |
Country Status (1)
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| CN (1) | CN203519252U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104089741A (en) * | 2014-06-10 | 2014-10-08 | 安徽埃力智能科技有限公司 | Pressure distribution sensor calibration measuring apparatus |
| 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 |
| CN106644289A (en) * | 2017-02-23 | 2017-05-10 | 苏州热工研究院有限公司 | Nuclear power station in-service inspection hydrostatic test temporary device and usage method thereof |
| CN111980903A (en) * | 2020-07-30 | 2020-11-24 | 珠海格力电器股份有限公司 | Detection assembly for measuring pressure in pump body, detection assembly of compressor and compressor |
| CN114705355A (en) * | 2022-02-25 | 2022-07-05 | 上海勘测设计研究院有限公司 | Fluid calibration device for soil pressure cell and soil pressure cell calibration method |
| CN118225313A (en) * | 2024-03-22 | 2024-06-21 | 陕西华山路桥集团有限公司 | Soil pressure sensor calibration device and method |
-
2013
- 2013-10-17 CN CN201320639579.7U patent/CN203519252U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104089741A (en) * | 2014-06-10 | 2014-10-08 | 安徽埃力智能科技有限公司 | Pressure distribution sensor calibration measuring apparatus |
| CN104089741B (en) * | 2014-06-10 | 2017-01-25 | 安徽埃力智能科技有限公司 | Pressure distribution sensor calibration measuring apparatus |
| 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 |
| CN106644289A (en) * | 2017-02-23 | 2017-05-10 | 苏州热工研究院有限公司 | Nuclear power station in-service inspection hydrostatic test temporary device and usage method thereof |
| CN106644289B (en) * | 2017-02-23 | 2023-11-21 | 苏州热工研究院有限公司 | Temporary device for in-service inspection hydrostatic test of nuclear power station and application method of temporary device |
| CN111980903A (en) * | 2020-07-30 | 2020-11-24 | 珠海格力电器股份有限公司 | Detection assembly for measuring pressure in pump body, detection assembly of compressor and compressor |
| CN114705355A (en) * | 2022-02-25 | 2022-07-05 | 上海勘测设计研究院有限公司 | Fluid calibration device for soil pressure cell and soil pressure cell calibration method |
| CN114705355B (en) * | 2022-02-25 | 2024-03-26 | 上海勘测设计研究院有限公司 | Fluid calibration device for soil pressure box and soil pressure box calibration method |
| CN118225313A (en) * | 2024-03-22 | 2024-06-21 | 陕西华山路桥集团有限公司 | Soil pressure sensor calibration device and method |
| CN118225313B (en) * | 2024-03-22 | 2024-09-27 | 陕西华山路桥集团有限公司 | Soil pressure sensor calibration device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140402 Termination date: 20161017 |