CN110823417A - Soil pressure sensor of anti overload pressure - Google Patents

Soil pressure sensor of anti overload pressure Download PDF

Info

Publication number
CN110823417A
CN110823417A CN201911211762.5A CN201911211762A CN110823417A CN 110823417 A CN110823417 A CN 110823417A CN 201911211762 A CN201911211762 A CN 201911211762A CN 110823417 A CN110823417 A CN 110823417A
Authority
CN
China
Prior art keywords
baffle
pressure sensor
main body
pressure
capsule
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201911211762.5A
Other languages
Chinese (zh)
Inventor
胡华
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangzhou Ruite Sensor Instrument Co Ltd
Original Assignee
Guangzhou Ruite Sensor Instrument Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guangzhou Ruite Sensor Instrument Co Ltd filed Critical Guangzhou Ruite Sensor Instrument Co Ltd
Priority to CN201911211762.5A priority Critical patent/CN110823417A/en
Publication of CN110823417A publication Critical patent/CN110823417A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01LMEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L1/00Measuring force or stress, in general
    • G01L1/02Measuring force or stress, in general by hydraulic or pneumatic means

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Fluid Pressure (AREA)

Abstract

The invention relates to the field of soil pressure measurement, in particular to an overload pressure resistant soil pressure sensor which comprises a body, wherein the body comprises a diaphragm box device and a shell device, the diaphragm box device comprises a diaphragm box main body, a sensor core body, a baffle, a spring, a sliding block, a sealing screw, a corrugated diaphragm, an oil injection hole, a lead, a conditioning circuit and a ring-shaped pressing ring are arranged in the diaphragm box main body, the shell device comprises a flange shell, a joint, a retaining ring and a packaging diaphragm, and the diaphragm box device is arranged in a cavity of the shell device. The invention has strong practicability, can ensure that the sensor core body is not impacted by overlarge pressure when measuring the soil pressure, and can return to a zero value when no pressure is measured.

Description

Soil pressure sensor of anti overload pressure
Technical Field
The invention relates to the field of soil pressure measurement, in particular to an overload pressure resistant soil pressure sensor.
Background
The pressure sensor is a device for measuring pressure, is widely applied to various industrial automatic control environments and relates to water conservancy and hydropower, railway traffic, buildings and the like. For the aspect of detection of cement mortar, a soil pressure sensor is used at present, the monitoring of soil pressure in geotechnical engineering is very important, the real-time monitoring of soil in engineering construction can be realized, the safety of engineering construction is guaranteed, and meanwhile, important basis can be provided for design and scientific research.
Utility model publication specification CN201520930453.4 discloses a zero earth pressure sensor that meets an emergency, this sensor technical scheme controls the oil pressure of hydraulic oil intracavity through actuating mechanism drive piston, utilizes the oil pressure to come balanced outside soil pressure, makes outer elastic membrane be in no deformation state all the time, and only inner elastic membrane takes place to warp, has avoided soil arch effect and soil body to shift like this to the liquid pressure that makes inner elastic membrane measure is soil pressure promptly, and measuring result is more accurate.
However, the soil pressure sensor has some disadvantages, such as an integrated sensor which is the same as the existing soil pressure sensor, and because the sensor capsule is used for measuring the soil pressure, the sensor capsule is easy to wear, the overshoot pressure is large, the pressure probe is easy to damage, the service life is short, and the capsule can be directly scrapped after being damaged.
Disclosure of Invention
The invention provides an overload pressure resistant soil pressure sensor for solving the prior technical problems, which can prolong the service life of the sensor and adopts a structural design capable of automatically restoring a zero value.
The above object of the present invention is achieved by the following technical means:
an overload pressure resistant soil pressure sensor comprises a body; the body comprises an outer shell device and a diaphragm capsule device, the diaphragm capsule device comprises a diaphragm capsule main body, a sensor core body for pressure measurement is arranged on the diaphragm capsule main body, a baffle plate for protecting the sensor core body is further arranged on the diaphragm capsule main body, a slide block and a spring for limiting the position of the baffle plate are arranged on the side edge of the baffle plate, the lower end of the baffle plate is connected with a corrugated diaphragm for transmitting pressure in a laminating manner, an oil filling hole for filling oil in the diaphragm capsule main body is further arranged on the diaphragm capsule main body, a sealing screw is arranged on the oil filling hole, the diaphragm capsule device further comprises a ring-shaped pressure ring for packaging the diaphragm capsule main body, a conditioning circuit is connected to the upper end of the ring-shaped pressure ring, the conditioning circuit is fixedly connected with a lead, the outer shell device comprises a flange outer shell, and two sides of the packaging membrane are provided with retaining rings for fixing the packaging membrane.
Preferably, when the baffle is forced to displace, the baffle is limited by the spring, the sliding block and the hollow oil pipe structure inside the capsule main body to the maximum displacement.
Preferably, when the soil pressure sensor is not stressed, the spring pushes the baffle back to the original position of the baffle due to the elastic structure of the spring.
Preferably, the flange housing is a housing of a hollow flange connection structure.
Preferably, the bellows body is an internal hollow tubing structure.
Preferably, the bellows body is disposed within a hollow cavity of the flange housing.
Preferably, the capsule body has a diameter width equal to the diameter width of the internal hollow cavity of the flange housing.
Preferably, the packaging film is most preferably a tetrafluoroethylene film.
Preferably, the diameter width of the sealing screw is equal to that of the oil filling hole.
Compared with the prior art, the invention has the advantages that:
this soil pressure sensor has abandoned the whole shell structure of diaphragm capsule among the traditional art, adopts split type diaphragm capsule structure, and such structure easily processes, can improve machining efficiency and can also reduce the processing cost, possesses the function that can more change the diaphragm capsule body simultaneously, and anti overload pressure is strong to can resume zero value automatically, great improvement sensor whole life.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic structural view of the structure a housing device of fig. 1.
Fig. 3 is a schematic structural view of the bellows device of fig. 1 in a B-configuration.
In fig. 1 to 3, a body 1; a joint 2; a retaining ring 3; a packaging film 4; a wire 5; a conditioning circuit 6; an annular compression ring 7; a sensor core 8; a spring 9; a sealing screw 10; a baffle plate 11; a slider 12; a corrugated diaphragm 13; a bellows body 14; a flange housing 15; an oil filler hole 16.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1, 2 and 3, the soil pressure sensor against overload pressure comprises a body 1, wherein the body 1 comprises a shell device and a capsule device.
The best embodiment of this example is: the housing device shown in fig. 1 and 2 is the structure a shown in fig. 1, and is composed of a flange housing 15, a connector 2, an encapsulation membrane 4 and a retaining ring 3, the flange housing 15 is of a hollow structure inside, the external structure is of a long cylindrical shape, a flange bolt hole is formed in the top of the flange housing 15, the flange bolt hole can be connected with the flange housing, the connector 2 is welded in the middle of the top of the flange housing 15, the encapsulation membrane 4 is fixed at the bottom of the flange housing 15 by the retaining ring 3 at the bottom of the flange housing 15, the encapsulation membrane 4 is most preferably a tetrafluoroethylene membrane, and tetrafluoroethylene has good corrosion resistance;
and, fig. 1 and fig. 3 the membrane cassette set up the B structure of fig. 1, the membrane cassette device comprises wire 5, modulate circuit 6, annular clamping ring 7, sensor core 8, spring 9, sealing screw 10, baffle 11, slider 12, ripple diaphragm 13, membrane cassette main part 14 and oil filler point 16, the one end hot melt of wire 5 connects modulate circuit 6, the other end hot melt of wire 5 connects the joint 2 of A structure, 14 inside hollow oil pipe cavity structures of membrane cassette device, 14 inside hollow oil pipe cavity of membrane cassette device is provided with sensor core 8, 14 upper ends of membrane cassette main part are provided with annular clamping ring 7 that is used for encapsulating membrane cassette main part 14, annular clamping ring 7 is the hollow cylinder structure, modulate circuit 6 is connected with 8 hot melt of sensor core through the inside cavity of annular clamping ring 7, 14 lower extreme of membrane cassette main part is provided with baffle 11 that is used for protecting sensor core 8, be provided with the spring 9 that the cylinder circled the appearance between baffle 11 and the sensor core 8, spring 9 is vertical to be fixed in the oil pipe between sensor core 8 and the baffle 11, the left and right sides of baffle 11 is provided with slider 12, and slider 12 is used for controlling baffle 11 and avoids controlling excessive skew, the lower extreme welding of baffle 11 has the ripple diaphragm 13 that is used for transmitting pressure, bellows main part side is provided with oil filler point 16, and oil filler point 16 is used for the inside hollow oil pipe oiling of bellows main part 14, and the back that the oiling finishes will seal screw 10 installation and fix on oil filler point 16.
The working steps are as follows:
connecting a lead 5 of a structure B to the lower end of a joint 2 of a structure A, injecting oil into an oil injection hole 16, installing and fixing the lead on the oil injection hole 16 by using a sealing screw 10 after the oil injection is finished, then putting the structure B into a cylindrical cavity at the lower end of the structure A, fixing a packaging diaphragm 4 at the lower end of a corrugated diaphragm 13 by using a retaining ring 3 and sealing the cavity inside the structure A, operating the body, transmitting the earth pressure to the packaging diaphragm 4, transmitting the earth pressure to the corrugated diaphragm 13 by the packaging diaphragm 4, transmitting the earth pressure to filling oil inside a diaphragm main body 14 by the corrugated diaphragm 13, transmitting the pressure to a sensor core body 8 by the filling oil, completing the whole measurement process, when in measurement, a pressure baffle 11 can displace towards the sensor core body 8, a spring 9 and a sliding block 12 can limit the displacement of the baffle so as to ensure that the sensor core body 8 is not subjected to excessive pressure, when the packaging membrane 4 is not stressed, the spring 9 can push the baffle plate 11 back to the initial position, and the zero value in the absence of pressure is ensured.
While the preferred embodiments of the present invention have been illustrated and described, it will be appreciated that the invention may be embodied otherwise than as specifically described and that equivalent alterations and modifications, which may be effected thereto by those skilled in the art without departing from the spirit of the invention, are deemed to be within the scope and spirit of the invention.

Claims (9)

1. An earth pressure sensor resisting overload pressure comprises a body (1); the novel capsule device is characterized in that the body (1) comprises an outer shell device and a capsule device, the capsule device comprises a capsule main body (14), a sensor core body (8) for pressure measurement is arranged on the capsule main body (14), a baffle (11) for protecting the sensor core body (8) is further arranged on the capsule main body (14), a slider (12) and a spring (9) for limiting the position of the baffle are arranged on the side edge of the baffle (11), a corrugated diaphragm (13) for transmitting pressure is attached to the lower end of the baffle (11), an oil filling hole (16) for filling oil inside the capsule main body (14) is further arranged on the capsule main body (14), a sealing screw (10) is arranged on the oil filling hole (16), the capsule device further comprises an annular pressure ring (7) for encapsulating the capsule main body (14), and an annular conditioning circuit (6) is connected to the upper end of the annular pressure ring (7), the conditioning circuit (6) is fixedly connected with the lead (5), the shell device comprises a flange shell (15), a joint (2) is arranged at the top end of the flange shell (15), a packaging diaphragm (4) used for packaging the flange shell (15) is further arranged at the bottom end of the flange shell (15), and retaining rings (3) used for fixing the packaging diaphragm (4) are arranged on two sides of the packaging diaphragm (4).
2. The earth pressure sensor against overload pressure according to claim 1, wherein: when the baffle (11) is stressed to displace, the baffle (11) is limited by the spring (9), the sliding block (12) and the hollow oil pipe structure position in the bellows main body (14) to the maximum displacement of the baffle (11).
3. The earth pressure sensor against overload pressure according to claim 2, wherein: when the soil pressure sensor is not stressed, the spring (9) can push the baffle (11) back to the original position of the baffle (11) due to the elastic structure of the spring (9).
4. The earth pressure sensor against overload pressure according to claim 3, wherein: the flange shell (15) is a shell of a hollow flange connection structure.
5. The earth pressure sensor against overload pressure according to claim 4, wherein: the capsule body (14) is of an internal hollow oil pipe structure.
6. The earth pressure sensor against overload pressure according to claim 5, wherein: the bellows body (14) is disposed within a hollow cavity of the flange housing (15).
7. The earth pressure sensor against overload pressure according to claim 6, wherein: the diameter width of the capsule main body (14) is equal to the diameter width of the inner hollow cavity of the flange shell (15).
8. The earth pressure sensor against overload pressure according to claim 7, wherein: the packaging membrane (4) is most preferably a tetrafluoroethylene membrane.
9. The earth pressure sensor against overload pressure according to claim 8, wherein: the diameter width of the sealing screw (10) is equal to that of the oil filling hole (16).
CN201911211762.5A 2019-12-02 2019-12-02 Soil pressure sensor of anti overload pressure Pending CN110823417A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911211762.5A CN110823417A (en) 2019-12-02 2019-12-02 Soil pressure sensor of anti overload pressure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911211762.5A CN110823417A (en) 2019-12-02 2019-12-02 Soil pressure sensor of anti overload pressure

Publications (1)

Publication Number Publication Date
CN110823417A true CN110823417A (en) 2020-02-21

Family

ID=69542017

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201911211762.5A Pending CN110823417A (en) 2019-12-02 2019-12-02 Soil pressure sensor of anti overload pressure

Country Status (1)

Country Link
CN (1) CN110823417A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114034427A (en) * 2021-10-21 2022-02-11 长沙理工大学 Soil pressure multiple spot distribution testing arrangement

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114034427A (en) * 2021-10-21 2022-02-11 长沙理工大学 Soil pressure multiple spot distribution testing arrangement
CN114034427B (en) * 2021-10-21 2024-03-26 长沙理工大学 Soil pressure multiple spot distribution testing arrangement

Similar Documents

Publication Publication Date Title
CN201037518Y (en) Disc type brake with capability detection sensor
CN201166130Y (en) Lining fluorine anti-corrosive control valve
CN200982900Y (en) A pressure shift integrated sensor
CN110823417A (en) Soil pressure sensor of anti overload pressure
CN105351525B (en) Petroleum pipe sealing device
CN211347169U (en) Soil pressure sensor of anti overload pressure
CN210830720U (en) Pressure and temperature integrated monitoring assembly and transformer oil tank pressure and temperature monitoring device
CN201514198U (en) Seal structure suitable for differential electric resistance strain gage and joint gage
CN110398315B (en) Force standard device and hydraulic bearing device
CN105715608A (en) Underwater hydraulic linear cylinder mechanism with position feedback function
CN204419759U (en) A kind of hydraulic jack of built-in magnetostrictive displacement sensor
CN208206383U (en) It is used to double damping structures of compensator or trimmer pressure impact in a kind of pressure transmitter impulse mouth
KR20170119258A (en) Water leak sensing system of double watertight pipe
CN210565471U (en) Waterproof sealing frame
CN201326863Y (en) Direct-buried internal pressure compensator
CN208951021U (en) Large-tonnage double-act-ing hydraulic J-Horner
CN209858086U (en) Layered curing entity temperature sensor
CN206112374U (en) Non -maintaining self -steering of on -line monitoring external pressure straight tube pressure balance seals expansion joint
CN201412627Y (en) Outer pressure axial type water-proof compensator
CN217177894U (en) End sealing device for steel-sheathed steel steam pipeline
CN215806478U (en) Hydraulic control reversing valve with automatic adjusting function
CN221055945U (en) Pressure monitoring device for industrial gas storage
CN210461912U (en) Squirrel-cage ecological flow-regulating pressure-regulating valve
CN206112373U (en) Non -maintaining self -steering expansion joint of on -line monitoring external pressure straight tube pressure balance
CN209838830U (en) High-precision servo actuator assembly for precision rolling mill

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination