Gas liquid pipeline working condition on-line monitoring mechanism

Abstract

The application relates to a kind of gas liquid pipeline working condition on-line monitoring mechanism, comprising: detection ring, detection ring has two groups, two groups of detection ring are arranged and contact each other mirror image symmetry and are respectively used to be fixed to pipeline outer wall, detection ring is divided into two arc-shaped detection ring, and adjusting groove is arranged at the axial end of detection ring;Piezoelectric ceramic block is fixed at the axial end of adjusting groove, and a push block is fixed on the other end of adjusting groove, and the end of push block is provided with push protrusion;Inner support ring, inner support ring has two groups, and is respectively used to be fixed with corresponding detection ring;Outer support device includes outer support ring, outer support ring has two groups, and the inner wall of outer support ring is provided with sliding groove, and inner support ring is in sliding contact with sliding groove;Electric connector, electric connector includes the inner insulating support ring and outer insulating support ring arranged in the outer side wall of inner support ring, and the inner insulating support ring and outer insulating support ring are electrically connected through brush structure.

Description

TECHNICAL FIELD

[0001] The present application relates to a kind of gas liquid pipeline working condition on-line monitoring mechanism, belong to conveying system monitoring equipment field. BACKGROUND

[0002] When gas liquid pipeline is in normal work, because the pipe is filled with working medium, it will be in stable advection, and the vibration outside the pipe is relatively small, when the working medium in the pipe leaks or the supply pressure equipment fails and produces air bubble, the working medium in the pipe will surge, the surge will drive the whole pipe to vibrate synchronously, and the vibration will further cause the pipe system to be damaged, which affects the safety of pipeline transportation, especially when transporting some dangerous liquids, it will cause serious safety accidents, in addition, other conditions that bring vibration to the pipeline will also affect the normal transportation of the pipeline.

[0003] In the pipeline system, the pipeline is generally connected by pipe, joint, valve and other components, the pipe testing of the prior art only sets dynamic sensor on some nodes to monitor the real-time state of the pipe through the vibration state of the pipe, because there are many fixed nodes of the pipe, and some pipes have expansion joints, in some positions without nodes, the vibration of the pipe cannot be transmitted in real time due to the attenuation of the fixed nodes and expansion joints.

[0004] When the pipe is fixed, it is generally only limited in the radial direction, and the expansion joint generally only provides axial floating, so the change of the pipe in the circumferential direction will not be affected by the attenuation of the fixed nodes and expansion joints. SUMMARY

[0005] The technical problem to be solved by the present application is to overcome the technical problem that the pipe state cannot be detected in real time in the prior art, and to provide a gas liquid pipeline working condition on-line monitoring mechanism.

[0006] The technical scheme adopted by the present application to solve its technical problem is:

[0007] A kind of gas liquid pipeline working condition on-line monitoring mechanism, comprising:

[0008] The detection ring has two groups, and the two groups of detection rings are arranged in mirror symmetry and contact each other and are respectively used for being fixed to the outer wall of the pipeline. The detection ring is divided into two arc-shaped sub-detection rings along a radial axis, and the two sub-detection rings are detachably fixed. A clamping surface for clamping to the surface of the outer wall of the pipeline is arranged on the inner wall of the sub-detection ring. Two arc-shaped adjusting grooves are arranged on the side of one end of the detection ring in the axial direction. An arc-shaped piezoelectric ceramic block is fixed to one end of the adjusting groove in the axial direction. The piezoelectric ceramic blocks of the two adjusting grooves are arranged in mirror symmetry. A push block is fixed to the other end of the adjusting groove in the axial direction. A floating gap is arranged between the end of the push block and the end of the piezoelectric ceramic block. A pushing protrusion for pushing the piezoelectric ceramic block of the detection ring on the other side is arranged on the end of the push block. The pushing protrusion is embedded into the floating gap and is in contact with the end of the piezoelectric ceramic block.

[0009] The inner support ring has two groups, and the two groups of inner support rings are respectively used for being fixed with the corresponding detection rings. The inner support ring is divided into two arc-shaped inner support sub-rings along a radial axis, and the inner support sub-rings are detachably fixed. Positioning grooves are arranged on the inner wall of the inner support sub-ring. The sub-detection ring is fixed into the positioning groove.

[0010] The outer support device includes an outer support ring and a support arm for supporting the outer support ring. The outer support ring has two groups, and the two groups of outer support rings are fixed to each other. The support arm is fixed to the outer side of the outer support ring. The outer support rings are arranged in mirror symmetry. An annular sliding groove is arranged on the inner wall of the outer support ring. The sliding groove is open at one end in the axial direction of the inner support ring. The side wall surface and the bottom wall surface of the sliding groove are in sliding contact with the inner support ring. The two outer support rings are divided into two arc-shaped outer support sub-rings along a radial axis, and the outer support sub-rings are detachably fixed.

[0011] The electric connector includes an inner insulating support ring arranged on the outer side wall of the inner support ring. Two groups of conductive springs are arranged in an annular array on the inner insulating support ring. Each group of conductive springs is connected to a conductive ring inlaid in the inner insulating support ring. The conductive ring is divided into two arc-shaped sub-conductive rings. The conductive ring of one group of conductive springs is connected to the positive electrode of the piezoelectric ceramic of the corresponding detection ring. The conductive ring of the other group of conductive springs is connected to the negative electrode of the piezoelectric ceramic of the corresponding detection ring. The inner insulating support ring includes two groups of inner insulating support sub-rings. The inner insulating support sub-rings are fixed to each other with the sub-detection rings. The electric connector further includes an outer insulating support ring arranged on the inner wall of the sliding groove of the outer support ring. The inner wall of the outer insulating support ring is provided with two groups of sliding contact rings. The inner wall of the sliding contact ring is in sliding contact with the conductive spring. The sliding contact ring is connected to the voltage detection device through a lead wire.

[0012] As a further improvement of the present application, an arc-shaped insulating sleeve made of ceramic is sleeved on the outer side of the piezoelectric ceramic block, and the piezoelectric ceramic block is fixed to the inner wall of the adjusting groove through the insulating sleeve; the insulating sleeve can prevent the conduction of the voltage of the piezoelectric ceramic to the detection ring made of metal material, improve the accuracy of monitoring the voltage data of the piezoelectric ceramic, and also replace the contact between the surface of the piezoelectric ceramic and the inner wall of the adjusting groove, reduce the wear of the surface of the piezoelectric ceramic, and further improve the accuracy of the data.

[0013] As a further improvement of the present application, a plurality of connecting protrusions are arranged in an annular array on the inner wall of the inner insulating support ring, and a plurality of connecting grooves for fixing the connecting protrusions are arranged in an annular array on the outer wall of the detection ring; the inner insulating support sub-ring is fixed to the detection ring by integral injection molding, and the conductive reed and the conductive ring are embedded on the inner insulating support sub-ring by integral injection molding; the connecting protrusions and the connecting grooves can improve the bonding strength between the detection ring and the inner insulating support ring, and the integral injection molding structure can further improve the connecting strength, reduce the possibility of separation between the inner insulating support ring and the detection ring of different materials under the influence of high temperature and vibration, and reduce the occurrence of poor contact of the cable of the piezoelectric ceramic block due to separation and looseness.

[0014] As a further improvement of the present application, an annular positioning protrusion is arranged on the inner support ring, an annular positioning groove is arranged at the connecting position of the outer wall of the inner insulating support ring and the outer wall of the detection ring, and the positioning protrusion is embedded into the positioning groove; the cooperation of the positioning protrusion of the inner support ring and the positioning groove improves the contact area of the inner support ring, the inner insulating support ring and the detection ring, and ensures the coaxiality of the inner support ring, the inner insulating support ring and the detection ring.

[0015] As a further improvement of the present application, an arc-shaped sliding support sub-ring with an L-shaped cross section is fixed to the inner wall of the outer support sub-ring, and the sliding support sub-ring is in sliding contact with the side outer wall and the front end wall of the inner support sub-ring; the sliding support sub-ring can realize the stability of the inner support ring during rotation relative to the outer support ring, and improve the sliding contact area.

[0016] As a further improvement of the present application, a plurality of clamping strips protruding from the inner wall of the detection ring are arranged in an array at positions corresponding to the clamping surfaces, and the clamping strips and the detection ring are in an integral structure; the clamping strips can ensure the contact stability of the detection ring relative to the surface of the pipeline, reduce the possibility of local sliding of the detection ring relative to the surface of the pipeline, and further improve the accuracy of the detection data.

[0017] As a further improvement of the present application, the pushing block is in an arc structure, is slidingly connected to the inner wall of the adjusting groove, at least two groups of pressing bolts are arranged on the wall surface of the detection ring, the pressing bolts penetrate into the adjusting groove, and the end portions of the pressing bolts are pressed against the surface of the pushing block; the pressing bolts can adjust the position of the pushing block and calibrate the initial extrusion force of the pushing block on the piezoelectric ceramic.

[0018] As a further improvement of the present application, the sliding sealing sheet is fixed to the surface of the detection ring corresponding to the opening side of the adjusting groove, the sliding sealing sheets of the two groups of detection rings slidingly contact each other, and the surface of the sliding sealing sheet is provided with an opening groove for the protruding of the pushing protrusion; the sealing sheet can not only realize the local sealing of the adjusting groove, but also can ensure that the two groups of detection rings are in a closed state relative to the outside during the mutual sliding, thereby reducing the possibility of pollution of the piezoelectric ceramic by metal debris, pipe liquid leakage and the like.

[0019] The present application has the following beneficial effects:

[0020] The present application can realize real-time collection of the torsion of the outer wall of the pipeline, has low influence of the pipeline fixing member, the connecting member and the expansion joint, and the data is more accurate. BRIEF DESCRIPTION OF DRAWINGS

[0021] The present application will be further described below in combination with the drawings and examples.

[0022] Figure 1 is a combined schematic view of the present application;

[0023] Figure 2 is a transverse cross-sectional schematic view of the present application;

[0024] Figure 3 is a structural schematic view of the first detection ring;

[0025] Figure 4 is a structural schematic view of the second detection ring;

[0026] Figure 5 is a structural schematic view of the sliding sealing sheet;

[0027] In the diagram: 1. Detection ring; 2. Adjustment groove; 3. Push block; 4. Pushing protrusion; 5. Piezoelectric ceramic block; 6. Insulating sleeve; 7. Clamping surface; 8. Clamping strip; 9. Inner insulating support ring; 10. Conductive ring; 11. Conductive spring; 12. Connecting groove; 13. Connecting protrusion; 14. Inner support ring; 15. Positioning protrusion; 16. Outer support ring; 17. Sliding support ring; 18. Sliding sealing plate; 19. Outer flange ring; 20. Support arm; 21. Sliding contact ring; 22. Conductive connecting post; 23. Clamping bolt; 24. Opening groove; 25. Wire; 26. Outer insulating support ring. Detailed Implementation

[0028] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention, and therefore only show the components relevant to the invention.

[0029] like Figure 1 As shown, this invention is an online monitoring mechanism for the operating conditions of gas and liquid pipelines. It mainly consists of a detection ring fixed to the outer wall of the pipeline, an outer support ring for rotating and supporting the detection ring, and a support arm for supporting the outer support ring. Both the detection ring and the outer support ring comprise two sets, with the two sets of detection rings slidingly in contact with each other. The two sets of outer support rings are fixed to each other, and both sets of detection rings are slidably connected to the sliding cavity between the two sets of outer support rings via an inner support ring. For ease of disassembly and installation, both the detection ring and the outer support ring are separate structures, each composed of two sets of semi-circular mirror-symmetrical structures. The two mirror-symmetrical structures are fixed together by bolts perpendicular to the radial axis. Figure 3 As shown;

[0030] The detection ring comprises two sets of detection rings. The inner wall of each detection ring has an arc-shaped clamping surface. Several protruding clamping strips are arranged in a ring array on the inner wall of the clamping surface. These clamping strips are used to contact and fix the rings to the pipe wall. Two symmetrical arc-shaped adjustment grooves are machined on the side of each detection ring. The adjustment grooves are concentrically arranged with the detection ring. An arc-shaped piezoelectric ceramic block is fixed to one end of each adjustment groove via a ceramic insulating sleeve. A push block is fixed to the other end of the adjustment groove. The push block is pressed through the wall of the detection ring. The bolts are tightened and fixed to the inner wall of the adjustment groove. A pushing protrusion is provided at the front end of the push block. The pushing protrusion is used to contact the end of the piezoelectric ceramic block of another set of detection rings and to squeeze the piezoelectric ceramic block. The piezoelectric ceramic blocks and push blocks in the two adjustment grooves are arranged in a mirror image and symmetrically. A sliding sealing plate is fixed on the surface of the sub-detection ring corresponding to the opening of the adjustment groove. The sliding sealing plates of the two sets of detection rings slide in contact with each other. The surface of the sliding sealing plate is provided with an opening groove for the pushing protrusion to extend out. The sliding sealing plates between the two sets of detection rings slide in contact with each other.

[0031] An inner support ring is fixed on the detection ring and is slidably connected to the outer support ring. The inner support ring includes two sets of inner support sub-rings, which are fixed to the detection ring by bolts. An annular positioning protrusion is provided on the inner support ring, and an insulating support ring is fixedly connected to the outer ring of the inner support ring through the positioning protrusion. An annular stepped positioning groove is provided at the connection position between the outer wall of the inner insulating support ring and the outer wall of the detection ring, and the positioning protrusion is embedded in the positioning groove.

[0032] The outer support rings are fixed to each other by an outer flange ring located on the outer support ring. A support arm is fixed to the outer support ring by the outer flange ring. The top of the support arm is provided with an arc-shaped connecting groove. The outer flange ring is embedded in the connecting groove and fixed by bolts. The support arm is used to fix to the outer wall of the building or the outer wall of the equipment. The outer support ring includes two outer support sub-rings. An annular sliding groove is provided on the inner wall of the outer support ring. The sliding groove opens at one axial end of the inner support ring. A sliding support ring with an L-shaped cross-section is fixed in the sliding groove. The sliding support ring is composed of two sets of sliding support sub-rings. The inner support ring slides in contact with the inner side wall and the inner bottom wall of the sliding support ring.

[0033] An electrical connection is provided between the detection ring and the outer support ring. The electrical connection includes two sets of conductive springs arranged on the outer wall of the inner insulating support ring. The conductive springs are embedded into the outer wall of the insulating support ring in a ring array by injection molding. Each set of conductive springs is connected to a conductive ring embedded in the insulating support ring. The conductive ring is divided into two arc-shaped sub-conductive rings. The conductive ring of one set of conductive springs is connected to the positive electrode of each piezoelectric ceramic of the corresponding detection ring, and the conductive ring of the other set of conductive springs is connected to the negative electrode of each piezoelectric ceramic of the corresponding detection ring. The inner insulating support ring includes two sets of inner insulating support sub-rings, which are fixed to the sub-detection rings. The electrical connector also includes an outer insulating support ring arranged on the inner wall of the sliding groove of the outer support ring. The inner wall of the outer insulating support ring is provided with two sets of sliding contact rings. The inner wall of the sliding contact rings slides in contact with the conductive springs. The sliding contact rings are connected to the voltage detection device through wires.

[0034] In use, this structure is first separated from the outer support ring, inner support ring, inner insulating support ring, and detection ring. The detection ring and inner insulating support ring are then fixed together with the inner support ring. Simultaneously, bolts are used to secure the detection ring and inner support ring together, allowing the inner ring of the detection ring to clamp onto the pipe surface. During clamping, the angle between the two detection rings is adjusted so that the pushing protrusions of the two push blocks on one detection ring insert into the gap between the push block and the piezoelectric ceramic of the other detection ring, ensuring that the pushing protrusion at the end of the push block contacts the end of the piezoelectric ceramic block. Next, the two outer insulating support rings of the outer insulating support ring are fixed into the two outer support rings of the outer insulating support ring, and the two outer insulating support rings are fixed together, ensuring that the sliding contact ring of the outer insulating support ring contacts the conductive spring. When the outer support ring slides relative to the inner support ring, the conductive spring and sliding contact ring ensure circuit continuity. Finally, the two sets of outer support rings are secured together using an outer flange ring. Finally, the fixed support arm is installed, which can be either extended or directly fixed to the equipment or building surface. The voltage detection device is connected to the conductive ring via a conductive connecting post located outside the outer support ring. The positive terminal is connected to the positive terminal of the voltage detection device through one of the conductive rings, conductive springs, sliding contact rings, and conductive connecting posts, while the negative terminal is connected to the negative terminal through another set of conductive rings, conductive springs, sliding contact rings, and conductive connecting posts. Because torsion occurs unidirectionally at any given time, only one set of piezoelectric ceramic blocks will be compressed between the two sets. The two mirror-symmetrically arranged piezoelectric ceramic blocks on the same detection ring are connected in parallel. In addition, diodes are connected to the connection lines of the piezoelectric ceramic blocks to prevent the current in the piezoelectric ceramic circuit from flowing in the opposite direction to the other set of piezoelectric ceramic blocks, which would affect the accuracy of the data. The piezoelectric ceramic blocks can be connected to the data node via cables, and the data node can be connected to the data receiving host via network equipment.

[0035] During the testing process, the torsion of the pipeline causes the two sets of testing rings to slide against each other. During this sliding process, the pushing protrusions inside the testing rings will squeeze the piezoelectric ceramic block on the other side of the torsion direction, causing the piezoelectric ceramic block to generate voltage under pressure. The voltage data can be used as a reference for the torsion angle, thereby assessing the real-time status of the pipeline. Under standard conditions, this torsion testing equipment can be installed on a standard pipeline. By torsion the pipeline, the voltage data generated under different torsional stresses and torsion angles can be recorded. Using the voltage data as a standard torsion data reference, the real-time conversion of the torsion state of the pipeline during movement can be realized.

[0036] Based on the above-described preferred embodiments of the present invention, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. An online monitoring mechanism for the operating conditions of gas and liquid pipelines, characterized in that, include: The detection ring consists of two sets, arranged symmetrically in mirror image and in contact with each other. Each set is used to fix the ring to the outer wall of the pipe. The detection ring is divided into two arc-shaped sub-detection rings along its radial axis. These sub-detection rings are detachably fixed. The inner wall of each sub-detection ring has a clamping surface for gripping the outer wall surface of the pipe. Two arc-shaped adjusting grooves are provided on the side of one axial end of the detection ring. An arc-shaped piezoelectric ceramic block is fixed at one axial end of each adjusting groove. The piezoelectric ceramic blocks of the two adjusting grooves are arranged mirror images of each other. A push block is fixed at the other axial end of each adjusting groove. A floating gap is provided between the end of the push block and the end of the piezoelectric ceramic block. A pushing protrusion is provided at the end of the push block to push the piezoelectric ceramic block of the other detection ring. The pushing protrusion is embedded in the floating gap and contacts the end of the piezoelectric ceramic block. The inner support ring has two sets, which are used to fix the corresponding detection rings respectively. The inner support ring is divided into two arc-shaped inner support sub-rings along the radial axis. The inner support sub-rings are detachably fixed to each other. The inner wall of the inner support sub-ring is provided with a positioning groove, and the sub-detection ring is fixed into the positioning groove. An outer support device includes an outer support ring and a support arm for supporting the outer support ring. There are two sets of outer support rings, which are fixed to each other. The support arm is fixed to the outside of the outer support ring. The outer support rings are arranged in a mirror symmetrical manner. An annular sliding groove is provided on the inner wall of the outer support ring. The sliding groove opens at one end of the axial direction of the inner support ring. The inner support ring and the side wall and bottom wall of the sliding groove are in sliding contact. The two outer support rings are divided into two arc-shaped outer support sub-rings along the radial axis. The outer support sub-rings are detachably fixed to each other. The electrical connector includes an inner insulating support ring disposed on the outer wall of an inner support ring. Two sets of conductive springs are arranged in a ring array on the inner insulating support ring. Each set of conductive springs is connected to a conductive ring embedded in the insulating support ring. The conductive ring is divided into two arc-shaped sub-conductive rings. The conductive ring of one set of conductive springs is connected to the positive electrode of each piezoelectric ceramic of the corresponding detection ring, and the conductive ring of the other set of conductive springs is connected to the negative electrode of each piezoelectric ceramic of the corresponding detection ring. The inner insulating support ring includes two sets of inner insulating support sub-rings, which are fixed to each other with the sub-detection rings. The electrical connector also includes an outer insulating support ring disposed on the inner wall of a sliding groove of an outer support ring. The inner wall of the outer insulating support ring is provided with two sets of sliding contact rings. The inner wall of the sliding contact rings slides in contact with the conductive springs. The sliding contact rings are connected to a voltage detection device through wires.

2. The online monitoring mechanism for gas and liquid pipeline operating conditions as described in claim 1, characterized in that: An arc-shaped insulating sleeve is fitted onto the outside of the piezoelectric ceramic block. The insulating sleeve is made of ceramic, and the piezoelectric ceramic block is fixed to the inner wall of the adjustment groove through the insulating sleeve.

3. The online monitoring mechanism for gas and liquid pipeline operating conditions as described in claim 1, characterized in that: The inner wall of the inner insulating support ring is provided with a number of connecting protrusions in an annular array, and the outer wall of the detection ring is provided with a number of connecting grooves for fixing the connecting protrusions in an annular array; the inner insulating support sub-ring is fixed to the sub-detection ring by integral injection molding, and the conductive spring and sub-conductive ring are pre-embedded in the inner insulating support sub-ring by integral injection molding.

4. The online monitoring mechanism for gas and liquid pipeline operating conditions as described in claim 1, characterized in that: An annular positioning protrusion is provided on the inner support ring, and an annular positioning groove is provided at the connection position between the outer wall of the inner insulating support ring and the outer wall of the detection ring, with the positioning protrusion embedded in the positioning groove.

5. The online monitoring mechanism for gas and liquid pipeline operating conditions as described in claim 1, characterized in that: A sliding support ring with an arc-shaped cross-section of L is fixed to the inner wall of the outer support ring. The sliding support ring slides in contact with the side outer wall and front wall of the inner support ring.

6. The online monitoring mechanism for gas and liquid pipeline operating conditions as described in claim 1, characterized in that: Several clamping strips that protrude relative to the inner wall of the sub-detection ring are arranged in an array at the position corresponding to the clamping surface on the inner wall of the sub-detection ring. The clamping strips and the sub-detection ring are an integral structure.

7. The online monitoring mechanism for gas and liquid pipeline operating conditions as described in claim 1, characterized in that: The push block has an arc-shaped structure and is slidably connected to the inner wall of the adjustment groove. At least two sets of clamping bolts are provided on the wall surface of the detection ring. The clamping bolts are inserted into the adjustment groove and the ends of the clamping bolts are pressed against the surface of the push block.

8. The online monitoring mechanism for gas and liquid pipeline operating conditions as described in claim 1, characterized in that: The surface of the sub-detection ring corresponding to the opening of the adjustment groove is fixed with a sliding sealing plate. The sliding sealing plates of the two sets of detection rings slide in contact with each other, and the surface of the sliding sealing plate is provided with an opening groove for pushing the protrusion out.

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