CN209727342U - A kind of dynamic big pressure sensor synchronous contrast testing machine tool switching device - Google Patents

Abstract

A kind of dynamic big pressure sensor synchronous contrast testing machine tool switching device, it is related to big pressure sensor dynamic calibration the field of test technology.The utility model is to solve the problems, such as to cannot achieve under existing actual condition to synchronize contrast test to three kinds of different sensors.The utility model includes chovr body, clamp block and impulse port, clamping block is connected in the middle part of chovr body upper surface, impulse port is connected in the middle part of chovr body lower end surface, multiple sensor mounting hole are along the circumferential direction laid on the excircle side wall of chovr body, each sensor mounting hole is radially arranged, it is along the circumferential direction laid with multiple auxiliary on the excircle side wall of chovr body and connects hole, it is corresponding that each sensor mounting hole connects hole with an auxiliary respectively, the middle part of chovr body is equipped with pressure guide hole, one end of pressure guide hole is connected with the centre bore of impulse port, the other end of pressure guide hole is connected with multiple sensor mounting hole respectively.The utility model is tested for pressure sensor synchronous contrast.

Description

A kind of dynamic big pressure sensor synchronous contrast testing machine tool switching device

Technical field

The utility model relates to big pressure sensor dynamic calibration the field of test technology, and in particular to a kind of big pressure of dynamic Sensor synchronous contrast testing machine tool switching device.

Background technique

Big pressure sensor (being greater than 100MPa) is before use, need that practical operating condition to be measured is combined to be demarcated.Usual root Whether quickly change at any time according to testing pressure signal, and measured signal is divided into static pressure and two kinds of dynamic pressure.Work as survey Amount at any time slowly varying static pressure when, can be produced using pressure apparatus (benchmark accuracy may be up to 2/10000ths) such as counterweights Raw big pressure environment carries out static demarcating, and dynamic pressure (including explosion or shock wave pressure signal) can only be by static or quasi- Static demarcating device demarcates the range and measurement accuracy of sensor, lacks the dynamic to transient signal always in the field The method that response process is demarcated.

Early stage is mainly carried out using plastic materials such as copper posts in terms of dynamic pressure measurement, and this method only can be measured peak The maximum pressure of value and be unable to measure out the conditional curve that pressure changes over time.In recent years, it is surveyed both at home and abroad in the big pressure of dynamic Amount aspect mainly uses piezoelectric transducer, this electrical measurement mode not only fast response time, and can record transient pressure and when Between change curve, to analysis transient physical process play an important role.But this piezoelectric transducer is by faint Charge signal characterize big pressure signal, be highly prone to electromagnetic interference, be not easy teletransmission, and piezoelectric material is in transient impact It is lower to be easy to damage.

Fibre optical sensor reaches its maturity in recent years, by the light wave long letter that big pressure signal is converted to fibre optical sensor Number, it is a kind of electromagnetism interference, suitable for teletransmission, the test method of high reliablity.But in the use of optical fiber big pressure sensor The problem of often encountering reference-calibrating in the process, if being subject to piezoelectric transducer, but piezoelectric transducer is only suitable for moving State test is unsuitable for being demarcated using static method, and the data of static demarcating can not reflect specific operating condition to be measured.Copper post Although manometric method only peak-data, is easily accepted by a user extensively.And gauge check department does not have still and meets actual survey Trial work condition is only capable of using shock tube (transient state small pressure signal detection response time) or drop impact (the quasi-static inspection of semisinusoidal method Survey peak value) carry out single parameter calibrating, therefore this field lack always one kind can under actual condition to copper post, pressure Three kinds of electricity, optical fiber sensors synchronize the device of contrast test.

Foreign countries have using opening two pressure taps of orthogonal direction on the tube wall of transient pressure pipeline come contrast test, mainly It is to detect sensor to be measured with standard transducer, test cannot be compared to the sensor of three kinds of mechanism.Usual transient state pressure Power source is not easy out excessive hole, in order to avoid reduce the intensity of structure.

Utility model content

The utility model synchronizes comparison to three kinds of different sensors to solve to cannot achieve under existing actual condition The problem of test, and then propose a kind of dynamic big pressure sensor synchronous contrast testing machine tool switching device.

The utility model adopts the technical scheme that solve above-mentioned technical problem:

A kind of dynamic big pressure sensor synchronous contrast testing machine tool switching device includes chovr body, clamps block and impulse Port, the shape of chovr body are column, and clamping block is connected in the middle part of chovr body upper surface, and the middle part of chovr body lower end surface is solid It is connected to impulse port, multiple sensor mounting hole, each sensing are along the circumferential direction laid on the excircle side wall of chovr body Device mounting hole is radially arranged, and multiple auxiliary are along the circumferential direction laid on the excircle side wall of chovr body and connect hole, Each sensor mounting hole connects that hole is corresponding with an auxiliary respectively, and the middle part of chovr body is equipped with pressure guide hole, one end of pressure guide hole It is connected with the centre bore of impulse port, the other end of pressure guide hole is connected with multiple sensor mounting hole respectively.

The beneficial effect that the utility model includes compared with prior art is:

The utility model can be realized different mechanisms using single pressure tap without opening additional pressure tap on pressure pipeline Sensor calibrate each other, avoid the deficiency of traditional test means, and user can be allowed to get the nod in test data, and have The characteristics such as simple, easy to use are installed, the measuring accuracy of the present apparatus is high, and the accuracy of test can be improved to 98% or more.

Detailed description of the invention

Fig. 1 is the overall structure diagram of the utility model；

Fig. 2 is the sectional view along A-A of Fig. 1；

Fig. 3 is the partial enlarged view of fibre optical sensor mounting hole 4 in the utility model；

Fig. 4 is the partial enlarged view of copper post load cell mounting hole 6 in the utility model.

Specific embodiment

Specific embodiment 1: illustrate present embodiment in conjunction with Fig. 1 to Fig. 4, a kind of dynamic described in present embodiment is pressed greatly Force snesor synchronous contrast testing machine tool switching device includes chovr body 1, clamps block 2 and impulse port 3, the shape of chovr body 1 Shape is column, is connected in the middle part of 1 upper surface of chovr body and clamps block 2, and chovr body is connected with impulse port in the middle part of 1 lower end surface 3, multiple sensor mounting hole are along the circumferential direction laid on the excircle side wall of chovr body 1, and each sensor mounting hole is equal Radially it is arranged, multiple auxiliary is along the circumferential direction laid on the excircle side wall of chovr body 1 and connect hole 8, each sensing Device mounting hole connects that hole 8 is corresponding with an auxiliary respectively, and the middle part of chovr body 1 is equipped with pressure guide hole 7, one end of pressure guide hole 7 with draw The centre bore of pressure side mouth 3 is connected, and the other end of pressure guide hole 7 is connected with multiple sensor mounting hole respectively.

For the end part seal and installation strength for guaranteeing sensor, which needs to combine torque spanner while use, by power Square spanner sets a fixed numbers torque, and such as 30Nm is artificial when preventing from screwing manograph and sensor using common wrench Factor leads to that seal request is not achieved, which is used for lateral connection torque spanner, and impulse port 3 is used for lateral connection pressure Force signal source.

Grease is injected to it when in use in impulse port 3 in present embodiment, and pressure guide hole 7 is connected with impulse port 3, leads Pilot grease is filled in pressure hole 7, to reduce pipe effect.

It is needed according to test in sensor mounting hole inner fiber, piezoelectricity, copper post load cell when test, auxiliary connects hole 8 It assists using when for installing optical fiber, piezoelectricity, copper post load cell.

Specific embodiment 2: illustrating present embodiment, each sensor peace described in present embodiment in conjunction with Fig. 1 to Fig. 4 It fills and is equipped with internal screw thread on the inner circumferential side wall in hole.Other compositions and connection type are same as the specific embodiment one.So set Sensor threads are mounted in sensor mounting hole by meter in sensor installation, in order to mount and dismount.

Specific embodiment 3: embodiment is described with reference to Fig. 1, the excircle of impulse port 3 described in present embodiment The middle part of side wall is equipped with external screw thread.Other compositions and connection type are identical with embodiment two.

Specific embodiment 4: illustrating present embodiment, each sensor peace described in present embodiment in conjunction with Fig. 1 to Fig. 2 The end face outside that dress hole and auxiliary connect hole 8 is equipped with plane 9.Other compositions and connection type are the same as the specific implementation mode 3.

It is designed in this way and connects the processing in hole 8 and the installation and removal of sensor convenient for sensor mounting hole and auxiliary.

Specific embodiment 5: embodiment is described with reference to Fig. 1, the shape that block 2 is clamped described in present embodiment is six Prism-shaped.Other compositions and connection type are identical as specific embodiment two, three or four.Be designed in this way in order to clamp block 2 with The connection of torque spanner.

Specific embodiment 6: illustrating present embodiment in conjunction with Fig. 1 to Fig. 2, it is interior that auxiliary described in present embodiment, which connects hole 8, Die nut connects hole.Other compositions and connection type are identical as specific embodiment five.When installing sensor, operator is needed It is auxiliarily fixed simultaneously using allen wrench, is designed in this way the use to cooperate allen wrench.

Specific embodiment 7: illustrating present embodiment, the multiple sensor peace of present embodiment in conjunction with Fig. 1 to Fig. 4 Filling hole includes fibre optical sensor mounting hole 4, piezoelectric transducer mounting hole 5 and copper post load cell mounting hole 6.It is other composition and Connection type is identical as specific embodiment six.

Mountable fibre optic compression sensor in fibre optical sensor mounting hole 4, mountable piezoelectricity in piezoelectric transducer mounting hole 5 Or piezoresistance sensor, the mountable copper post load cell of copper post load cell mounting hole 6.Fibre optic compression sensor is for dynamic Measurement can change installation screw thread mechanical dimension according to the range of different fibre optic compression sensors；Piezoelectricity or piezoresistance sensor are used for Dynamic measures, and can install screw thread mechanical dimension according to the change of different range sensors；Copper post surveys surveying for surge pressure for pressure Amount, copper post load cell are mounted in manograph, and manograph is threadedly attached on switching device, can be pressed according to different surveys The installation screw thread mechanical dimension of the change manograph of range.

When installing fibre optic compression sensor, piezoelectricity or piezoresistance sensor and copper post load cell, operator is needed simultaneously It is auxiliarily fixed using allen wrench.This kind of dynamic big pressure sensor synchronous contrast testing machine tool switching device is using high-quality Steel are process, and the switching device is for connecting fiber grating torque wrench and pressure signal source when in use first by impulse The threaded body of port 3 screws in pressure signal source, then torque spanner lateral connection is clamped block 2.

The quantity of sensor mounting hole, which can according to need, in present embodiment is extended, and electronic pressure sensor is not It is limited as piezoelectric transducer, pressure drag dynamic pressure measurement sensor can be used, central idea is the sensor of different mechanisms in same pressure Comparison and calibration test under force signal source.

Specific embodiment 8: illustrating present embodiment, the peace of fibre optical sensor described in present embodiment in conjunction with Fig. 1 to Fig. 4 The threaded hole that hole 4 is M10 × 1 is filled, piezoelectric transducer mounting hole 5 is the threaded hole of M10 × 1, copper post load cell mounting hole 6 For the threaded hole of M14 × 1.Other compositions and connection type are identical as specific embodiment seven.

Specific embodiment 9: illustrate present embodiment in conjunction with Fig. 1 to Fig. 2, the height of chovr body 1 described in present embodiment For 40mm, the maximum outside diameter of chovr body 1 is 60mm, and the minimum outer diameter of chovr body 1 is 58mm, and the height for clamping block 2 is 10mm, card The internal diameter for filling block 2 is 14mm.Other compositions and connection type are identical as specific embodiment six, seven or eight.

Specific embodiment 10: illustrate present embodiment in conjunction with Fig. 1 to Fig. 2, the height of impulse port 3 described in present embodiment Degree is 18mm, and the thread depth of impulse port 3 is 10mm, and the internal diameter of 3 excircle side wall of impulse port is 10mm.It is other composition and Connection type is the same as the specific implementation mode 3.

Claims (10)

1. a kind of dynamic big pressure sensor synchronous contrast testing machine tool switching device, it is characterised in that: a kind of dynamic Big pressure sensor synchronous contrast testing machine tool switching device includes chovr body (1), clamps block (2) and impulse port (3), is turned The shape of junctor (1) is column, is connected in the middle part of chovr body (1) upper surface and clamps block (2), chovr body (1) lower end surface Middle part is connected with impulse port (3), and multiple sensor installations are along the circumferential direction laid on the excircle side wall of chovr body (1) Hole, each sensor mounting hole are radially arranged, and are along the circumferential direction laid on the excircle side wall of chovr body (1) Multiple auxiliary connect hole (8), and each sensor mounting hole connects that hole (8) are corresponding, and chovr body is set in the middle part of (1) with an auxiliary respectively Have pressure guide hole (7), one end of pressure guide hole (7) is connected with the centre bore of impulse port (3), the other end difference of pressure guide hole (7) It is connected with multiple sensor mounting hole.

2. a kind of dynamic big pressure sensor synchronous contrast testing machine tool switching device according to claim 1, feature It is: is equipped with internal screw thread on the inner circumferential side wall of each sensor mounting hole.

3. a kind of dynamic big pressure sensor synchronous contrast testing machine tool switching device according to claim 2, feature Be: the middle part of the excircle side wall of the impulse port (3) is equipped with external screw thread.

4. a kind of dynamic big pressure sensor synchronous contrast testing machine tool switching device according to claim 3, feature Be: the end face outside that each sensor mounting hole and auxiliary connect hole (8) is equipped with plane (9).

5. according to a kind of dynamic big pressure sensor synchronous contrast testing machine tool switching device of claim 2,3 or 4, Be characterized in that: the shape for clamping block (2) is hexa-prism.

6. a kind of dynamic big pressure sensor synchronous contrast testing machine tool switching device according to claim 5, feature Be: it is that allen wrench connects hole that the auxiliary, which connects hole (8),.

7. a kind of dynamic big pressure sensor synchronous contrast testing machine tool switching device according to claim 6, feature Be: the multiple sensor mounting hole includes that fibre optical sensor mounting hole (4), piezoelectric transducer mounting hole (5) and copper post are surveyed Pressure sensor mounting hole (6).

8. a kind of dynamic big pressure sensor synchronous contrast testing machine tool switching device according to claim 7, feature Be: the fibre optical sensor mounting hole (4) is the threaded hole of M10 × 1, and piezoelectric transducer mounting hole (5) is the spiral shell of M10 × 1 Pit, copper post load cell mounting hole (6) are the threaded hole of M14 × 1.

9. according to a kind of dynamic big pressure sensor synchronous contrast testing machine tool switching device of claim 6,7 or 8, Be characterized in that: the height of the chovr body (1) is 40mm, and the maximum outside diameter of chovr body (1) is 60mm, the minimum of chovr body (1) Outer diameter is 58mm, and the height for clamping block (2) is 10mm, and the internal diameter for clamping block (2) is 14mm.

10. a kind of dynamic big pressure sensor synchronous contrast testing machine tool switching device according to claim 3, feature Be: the height of the impulse port (3) is 18mm, and the thread depth of impulse port (3) is 10mm, impulse port (3) outer circle The internal diameter of all side walls is 10mm.