CN213956625U

CN213956625U - Pipeline piezoelectric type pressure sensor

Info

Publication number: CN213956625U
Application number: CN202022907427.3U
Authority: CN
Inventors: 邓国锋
Original assignee: Shenzhen Baomingfa Technology Co ltd
Current assignee: Shenzhen Baomingfa Technology Co ltd
Priority date: 2020-12-07
Filing date: 2020-12-07
Publication date: 2021-08-13
Anticipated expiration: 2030-12-07

Abstract

The utility model discloses a pipeline piezoelectric type pressure sensor, including fixed box, there is the layer board through a plurality of compression spring fixed mounting in the fixed box, the threaded rod is installed to the internal screw thread of fixed box, and installs the clamp plate through stop gear between threaded rod and the fixed box, install two ratchets, two through two slide mechanism in the fixed box all there is the arc planking through push rod fixed mounting on the ratchets, and equal fixed mounting has two extrusion springs between every arc planking and the fixed box, rotate through two commentaries on classics rollers in the fixed box and install two gears, and two gears mesh with two ratchets respectively mutually, two all install positioning mechanism between commentaries on classics roller and the fixed box. Has the advantages that: can carry out pressure detection to the pipeline of different pipe diameters, application scope is wider, and can wait to detect and carry out firm fixed between the pipeline, make can not take place to break away from the phenomenon when carrying out pressure detection.

Description

Pipeline piezoelectric type pressure sensor

Technical Field

The utility model relates to a piezoelectric type pressure sensor's technical field especially relates to a pipeline piezoelectric type pressure sensor.

Background

The pipeline piezoelectric sensor is a sensor which induces the pressure change of a pipeline through a piezoelectric material, generates charges, converts the charges into electric quantity in direct proportion to the applied external force after amplifying and converting impedance through a charge amplifier and a measuring circuit, and outputs the electric quantity, and can accurately detect the pressure applied to the pipeline;

the size of current piezoelectric type sensor is comparatively fixed, and the flexibility is not enough, and the piezoelectric type sensor of a model can only detect the pipeline of same pipe diameter size usually, and application scope is less, and can't carry out better fixed between current device and the pipeline for the pipeline receives easy pipe separation of sensor when pressure, and the limitation is great during the use, consequently needs to design a pipeline piezoelectric type pressure sensor to solve above-mentioned problem urgently.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem existing in the prior art, and the utility model provides a pipeline piezoelectric type pressure sensor.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a piezoelectric pressure sensor for pipeline is composed of a fixing box with a supporting plate fixed by multiple compression springs, a threaded rod installed to internal thread of said fixing box, a pressing plate is arranged between the threaded rod and the fixed box through a limiting mechanism, two toothed bars are arranged in the fixed box through two sliding mechanisms, arc-shaped outer plates are fixedly arranged on the two toothed bars through push rods, and two extrusion springs are fixedly arranged between each arc-shaped outer plate and the fixed box, two gears are rotatably arranged in the fixed box through two rotating rollers, and the two gears are respectively meshed with the two toothed bars, positioning mechanisms are respectively arranged between the two rotating rollers and the fixed box, the piezoelectric ceramic panel is characterized in that piezoelectric rods are fixedly mounted on the pressing plate and the two arc-shaped outer plates, inductors are fixedly mounted in the fixed box, and each piezoelectric rod is electrically connected with the corresponding inductor.

In the above-mentioned pipeline piezoelectric pressure sensor, stop gear includes the pivot of fixed mounting at the threaded rod lower extreme, and the clamp plate rotates and installs in the pivot, fixed mounting has two spacing springs between clamp plate and the fixed box.

In the above piezoelectric pressure sensor for pipeline, the sliding mechanism includes a trapezoidal sliding block fixedly mounted on the rack bar, and a trapezoidal sliding groove matched with the trapezoidal sliding block is formed in the fixed box.

In the above piezoelectric pressure sensor for pipelines, the positioning mechanism includes a telescopic clamping rod fixedly mounted on the rotary roller, the telescopic clamping rod is located outside the fixing box, and the fixing box is provided with a plurality of clamping grooves matched with the telescopic clamping rod.

In the piezoelectric type pressure sensor for the pipeline, the supporting plate is fixedly provided with the sponge cushion, and the threaded rod is fixedly provided with the rotating handle.

Compared with the prior art, the utility model discloses the advantage lies in:

1: through setting up threaded rod and clamp plate, when needs carry out the less pipeline external pressure of pipe diameter and examine time measuring, operating personnel can place the pipeline on the layer board in fixed box, rotates the threaded rod again and makes it drive the clamp plate decline and make the piezoelectric rod on the clamp plate offset with the upper portion outer wall of pipeline, can carry out the centre gripping to the pipeline fixedly, makes the two can not separate, can carry out the pressure measurement of pipeline outer wall.

2: through setting up gear and ratch, when needs examine the great pipeline of pipe diameter, the rotatable roller of operating personnel drives the gear and rotates, can drive the ratch removal of meshing with it during gear revolve, can promote push rod and arc planking removal when the ratch removes promptly to can make the piezoelectric rod on the arc planking offset with the inner wall of pipeline, two arc planking interact can be with carrying out the centre gripping between the inner wall of this device and pipeline fixed, can carry out the pressure measurement of pipeline inner wall.

3: through setting up piezoelectric rod and inductor, piezoelectric rod is made by piezoelectricity single crystal material, can turn into the electric charge and conduct to the inductor with the pressure that the pipeline received on, the inductor can enlarge and change the electric charge into pressure numerical value promptly, can detect out the size of pressure, and the number of piezoelectric rod sets up to a plurality ofly to can carry out the multiple spot simultaneously and detect, make the testing result more accurate.

To sum up, the utility model discloses can carry out pressure detection to the pipeline of different pipe diameters, application scope is wider, and can with wait to detect and carry out firm fixed between the pipeline, make can not take place to break away from the phenomenon when carrying out pressure detection.

Drawings

Fig. 1 is a schematic structural diagram of a piezoelectric pressure sensor for a pipeline according to the present invention;

FIG. 2 is an enlarged view of a node at the point A in FIG. 1;

fig. 3 is an enlarged view of a node at a portion B in fig. 1.

In the figure: the device comprises a fixing box 1, a supporting plate 2, a compression spring 3, a pressing plate 4, a piezoelectric rod 5, a threaded rod 6, a limiting spring 7, a rotating shaft 8, a rotating handle 9, a push rod 10, an extrusion spring 11, an arc outer plate 12, a toothed rod 13, a gear 14, a telescopic clamping rod 15 and a clamping groove 16.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Referring to fig. 1-3, a pipeline piezoelectric pressure sensor comprises a fixed box 1, a supporting plate 2 is fixedly installed in the fixed box 1 through a plurality of compression springs 3, a threaded rod 6 is installed in the fixed box 1 through internal threads, a pressing plate 4 is installed between the threaded rod 6 and the fixed box 1 through a limiting mechanism, two toothed bars 13 are installed in the fixed box 1 through two sliding mechanisms, arc-shaped outer plates 12 are fixedly installed on the two toothed bars 13 through push rods 10, two extrusion springs 11 are fixedly installed between each arc-shaped outer plate 12 and the fixed box 1, two gears 14 are rotatably installed in the fixed box 1 through two rollers, the two gears 14 are respectively meshed with the two toothed bars 13, positioning mechanisms are installed between the two rollers and the fixed box 1, piezoelectric rods 5 are fixedly installed on the pressing plate 4 and the two arc-shaped outer plates 12, and an inductor is fixedly installed in the fixed box 1, each piezoelectric rod 5 is electrically connected with the inductor;

the following points are notable:

1. when the pipeline pressure that the pipe diameter is less detected when needs carry out, operating personnel can place the pipeline on layer board 2 in fixed box 1, rotates threaded rod 6 again and makes it drive clamp plate 4 descend and make the piezoelectric rod 5 on the clamp plate 4 offset with the upper portion outer wall of pipeline, can carry out the centre gripping to the pipeline fixedly, makes the two can not separate, can detect the pressure of pipeline outer wall.

2. Stop gear includes pivot 8 of fixed mounting at 6 lower extremes of threaded rod, and clamp plate 4 rotates to be installed in pivot 8, and fixed mounting has two spacing springs 7 between clamp plate 4 and the fixed box 1, and stop gear plays spacing effect for when making 6 precessions of threaded rod clamp plate 4 can only carry out vertical motion and can not take place to rotate.

3. The sliding mechanism comprises a trapezoidal sliding block fixedly mounted on the toothed bar 13, a trapezoidal sliding groove matched with the trapezoidal sliding block is formed in the fixed box 1, and the sliding mechanism is used for enabling the toothed bar 13 to horizontally move left and right only in the fixed box 1 and cannot deviate and separate from the fixed box 1.

4. When the pipeline with the larger pipe diameter needs to be detected, an operator can rotate the roller to drive the gear 14 to rotate, the gear 14 can drive the toothed bar 13 meshed with the gear to move when rotating, the toothed bar 13 can push the push rod 10 and the arc-shaped outer plate 12 to move when moving, so that the piezoelectric rod 5 on the arc-shaped outer plate 12 can be abutted to the inner wall of the pipeline, the two arc-shaped outer plates 12 interact with each other to clamp and fix the device and the inner wall of the pipeline, and the pressure detection of the inner wall of the pipeline can be performed.

5. Positioning mechanism includes flexible kelly 15 of fixed mounting on changeing the roller, and flexible kelly 15 is located the outside of fixed box 1, has seted up a plurality ofly on the fixed box 1 with flexible kelly 15 matched with draw-in grooves 16, when the inner wall of arc planking 12 and pipeline offseted, can be with flexible kelly 15 block to corresponding draw-in groove 16 in, can fix the position of arc planking 12.

6. Piezoelectric rod 5 is made by piezoelectricity single crystal material, can turn into the electric charge and conduct to the inductor with the pressure that the pipeline received, and the inductor can amplify electric charge and turn into pressure numerical value promptly, can detect out the size of pressure, and piezoelectric rod 5's number sets up to a plurality ofly to can carry out the multiple spot simultaneously and detect, make the testing result more accurate.

7. A spongy cushion is fixedly arranged on the supporting plate 2 and plays a role in protecting the pipeline.

8. Fixed mounting has on the threaded rod 6 changes 9, and operating personnel can rotate and drive threaded rod 6 to rotate 9, and is comparatively convenient save trouble.

Further, unless otherwise specifically stated or limited, the above-described fixed connection is to be understood in a broad sense, and may be, for example, welded, glued, or integrally formed as is conventional in the art.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A pipeline piezoelectric pressure sensor comprises a fixed box (1) and is characterized in that a supporting plate (2) is fixedly arranged in the fixed box (1) through a plurality of compression springs (3), a threaded rod (6) is installed in the fixed box (1) through internal threads, a pressing plate (4) is installed between the threaded rod (6) and the fixed box (1) through a limiting mechanism, two toothed bars (13) are installed in the fixed box (1) through two sliding mechanisms, two arc-shaped outer plates (12) are fixedly installed on the toothed bars (13) through push rods (10), two extrusion springs (11) are fixedly installed between each arc-shaped outer plate (12) and the fixed box (1), two gears (14) are installed in the fixed box (1) through rotation of two rotating rollers, and the two gears (14) are respectively meshed with the two toothed bars (13), two all install positioning mechanism between commentaries on classics roller and fixed box (1), equal fixed mounting has piezoelectric rod (5) on clamp plate (4), two arc planking (12), fixed mounting has the inductor in fixed box (1), and is the electricity between every piezoelectric rod (5) and the inductor to be connected.

2. The pipeline piezoelectric pressure sensor according to claim 1, wherein the limiting mechanism comprises a rotating shaft (8) fixedly installed at the lower end of the threaded rod (6), the pressing plate (4) is rotatably installed on the rotating shaft (8), and two limiting springs (7) are fixedly installed between the pressing plate (4) and the fixing box (1).

3. The pipeline piezoelectric pressure sensor according to claim 2, wherein the sliding mechanism comprises a trapezoidal sliding block fixedly mounted on the rack bar (13), and a trapezoidal sliding groove matched with the trapezoidal sliding block is formed in the fixed box (1).

4. The pipeline piezoelectric pressure sensor according to claim 3, wherein the positioning mechanism comprises a telescopic clamping rod (15) fixedly installed on the rotating roller, the telescopic clamping rod (15) is located outside the fixed box (1), and a plurality of clamping grooves (16) matched with the telescopic clamping rod (15) are formed in the fixed box (1).

5. The piezoelectric pressure transducer according to claim 2, wherein a sponge pad is fixedly arranged on the supporting plate (2), and a rotating handle (9) is fixedly arranged on the threaded rod (6).