Piezoelectric ceramic vibration monitoring equipment

Abstract

The utility model relates to the technical field of vibration monitoring, and discloses piezoelectric ceramic vibration monitoring equipment, which comprises a U-shaped clamping plate, a bottom plate, a connecting sleeve, a connecting block and a controller, screw rods are arranged on two sides of the bottom end of the U-shaped clamping plate, nuts are arranged on outer threads of the screw rods, the bottom plate is arranged on the screw rods in a penetrating manner, and the bottom end of the bottom plate is in contact with the upper ends of the nuts. The connecting sleeve is arranged on the bottom plate, and a vibration monitoring mechanism is arranged in the connecting sleeve and used for monitoring vibration of the pipeline; according to the utility model, the vibration monitoring mechanism, the first positioning mechanism and the second positioning mechanism are arranged, so that whether the nut is loosened or not can be accurately judged through the cooperation of the first positioning mechanism and the second positioning mechanism in the process of monitoring the vibration condition of the pipeline by using the vibration monitoring mechanism; the situation that the nut is still not perceived after being loosened can be effectively avoided, and it is guaranteed that pipeline vibration signals are accurately captured.

Description

Technical Field

[0001] The utility model relates to the technical field of vibration monitoring, and more specifically, to a piezoelectric ceramic vibration monitoring device. Background Art

[0002] Piezoelectric ceramic vibration monitoring operates on the piezoelectric effect. When a piezoelectric ceramic is subjected to mechanical stress (such as vibration), charges of opposite polarity are generated across its terminals, creating a current. This conversion of mechanical energy into electrical energy enables the piezoelectric ceramic to be used as a vibration sensor. By measuring the resulting current or voltage signal, vibration can be monitored and analyzed.

[0003] At present, when the gas pipes, heating pipes and water pipes in the city are in use, when the pipelines are subject to external interference (such as third-party damage, directional drilling construction, mechanical excavation, etc.), the pipelines and the surrounding soil will vibrate. In order to know the vibration conditions of the pipelines, piezoelectric ceramic vibration monitoring equipment will be installed on the pipelines to monitor the vibration of the pipelines. In order to facilitate the installation of piezoelectric ceramic vibration monitoring equipment on the pipelines, the piezoelectric ceramic vibration monitoring equipment will first be installed on the clamp, and then the clamp and the pipeline will be fastened with bolts. However, in actual applications, since the pipeline will vibrate after being subjected to external interference, the bolts may become loose during long-term use, making the contact between the clamp and the pipeline no longer stable. At this time, it is difficult for the staff to detect it, which affects the accurate capture of the pipeline vibration signal by the piezoelectric ceramic vibration monitoring equipment. Utility Model Content

[0004] The utility model provides a piezoelectric ceramic vibration monitoring device to solve the technical problem in related technologies that, since the pipeline will vibrate after being subjected to external interference, the bolts may become loose during long-term use, making the contact between the clamp and the pipeline no longer stable. At this time, it is difficult for staff to detect it, which affects the piezoelectric ceramic vibration monitoring device's accurate capture of the pipeline vibration signal.

[0005] The utility model provides a piezoelectric ceramic vibration monitoring device, comprising a U-shaped card plate and a bottom plate, wherein screws are provided on both sides of the bottom end of the U-shaped card plate, and nuts are provided on the outer threads of the screws, and the bottom plate is inserted into the screws, and the bottom end of the bottom plate contacts the upper end of the nut, and further comprises:

[0006] A connecting sleeve, which is disposed on the base plate, and a vibration monitoring mechanism is disposed inside the connecting sleeve for monitoring the vibration of the pipeline. The vibration monitoring mechanism includes a negative electrode sheet disposed inside the connecting sleeve, a piezoelectric ceramic body is disposed on a side of the negative electrode sheet away from the connecting sleeve, and a positive electrode sheet is disposed on a side of the piezoelectric ceramic body away from the negative electrode sheet;

[0007] A connecting block is provided on the outside of the U-shaped card plate, and a rectangular opening is provided on the connecting block. A first positioning mechanism is provided in the rectangular opening for positioning the base plate in a use position, and the first positioning mechanism includes a rotating rod rotatably provided in the rectangular opening, and a gear is provided on the rotating rod;

[0008] The controller is arranged on the bottom side of the bottom plate, and the negative electrode sheet and the positive electrode sheet are both electrically connected to the controller through wires.

[0009] Furthermore, the vibration monitoring mechanism also includes a first spring arranged inside the connecting sleeve, the negative electrode sheet, the piezoelectric ceramic body and the positive electrode sheet are all located on the inner side of the first spring, and an extrusion block is provided at one end of the first spring away from the inner wall of the connecting sleeve.

[0010] Furthermore, two symmetrically distributed tooth plates are provided on the upper part of the base plate, and one end of the tooth plate away from the base plate passes through the rectangular opening and meshes with the gear.

[0011] Furthermore, a circular groove is provided at the end of the rotating rod away from the rectangular opening, the first positioning mechanism also includes a first magnet arranged in the circular groove, an indicator block is provided at the end of the rotating rod away from the rectangular opening, and a second magnet is provided on one side of the indicator block for use in conjunction with the first magnet, the second magnet is located in the circular groove and is magnetically attracted to the first magnet.

[0012] Furthermore, there are two connecting blocks, and a positioning block is provided on one side of the connecting block away from the U-shaped clamping plate. A positioning notch is provided on one side of the positioning block for use in conjunction with the indicating block.

[0013] Furthermore, a warning light is provided on the bottom side of the base plate, and the warning light is electrically connected to the controller.

[0014] Furthermore, a second positioning mechanism is provided on the connecting block, and the second positioning mechanism includes a pair of T-shaped rods inserted into the connecting block, a second spring is sleeved on the outer side of the T-shaped rod, and the two ends of the second spring are respectively connected to the T-shaped rod and the connecting block, and the same stop block is provided on the upper side of the two T-shaped rods, and the side of the tooth plate away from the bottom plate abuts against the bottom side of the stop block, and a scale is provided on the T-shaped rod.

[0015] The beneficial effects of the present invention are:

[0016] The utility model is provided with a vibration monitoring mechanism, a first positioning mechanism and a second positioning mechanism. In the process of monitoring the vibration condition of the pipeline by using the vibration monitoring mechanism, the first positioning mechanism allows the inspection personnel to quickly detect whether the nut is loose, and then cooperates with the second positioning mechanism to accurately determine whether the nut is loose, thereby effectively avoiding the situation where the nut is loose but still not detected, thereby ensuring the accurate capture of the pipeline vibration signal. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of Example 1 of the present utility model;

[0018] Figure 2 This is a schematic diagram of the structure of Example 1 of the present utility model when in use;

[0019] Figure 3 This is a schematic cross-sectional view of the connecting sleeve in Example 1 of the present utility model;

[0020] Figure 4 This is a schematic cross-sectional view of the connecting block in Example 1 of the present utility model;

[0021] Figure 5 This is a schematic diagram of the exploded cross-section structure of the first positioning mechanism in Example 1 of the present utility model;

[0022] Figure 6 This is a schematic structural diagram of Example 2 of the present utility model;

[0023] Figure 7 It is a schematic diagram of the connection structure between the connecting block and the second positioning mechanism in Example 2 of the present utility model.

[0024] In the figure: 1. U-shaped clamping plate; 2. bottom plate; 3. screw; 4. nut; 5. connecting sleeve; 6. vibration monitoring mechanism; 601. negative electrode sheet; 602. piezoelectric ceramic body; 603. positive electrode sheet; 604. first spring; 605. extrusion block; 7. connecting block; 8. rectangular opening; 9. first positioning mechanism; 901. rotating rod; 902. gear; 903. first magnet; 904. indicator block; 905. second magnet; 10. controller; 11. tooth plate; 12. circular groove; 13. positioning block; 14. positioning notch; 15. warning light; 16. second positioning mechanism; 1601. T-shaped rod; 1602. second spring; 1603. stop block; 17. scale. DETAILED DESCRIPTION

[0025] The subject matter described herein will now be discussed with reference to example embodiments. It should be understood that these embodiments are discussed solely to enable those skilled in the art to better understand and implement the subject matter described herein, and that the functions and arrangements of the elements discussed may be varied without departing from the scope of this specification. Various examples may omit, substitute, or add various processes or components as needed. Furthermore, features described in some examples may be combined in other examples.

[0026] Example 1

[0027] The utility model discloses a piezoelectric ceramic vibration monitoring device, such as Figure 1-Figure 5 As shown, it includes a U-shaped card plate 1, a base plate 2, a connecting sleeve 5, a connecting block 7 and a controller 10. Screws 3 are provided on both sides of the bottom end of the U-shaped card plate 1. The outer threads of the screws 3 are provided with nuts 4. The base plate 2 is inserted into the screws 3, and the bottom end of the base plate 2 contacts the upper end of the nut 4. After the U-shaped card plate 1 is put on the pipeline, the base plate 2 is passed through the two screws 3 so that one side of the base plate 2 contacts the outer wall of the pipeline, and then the nut 4 is screwed onto the screw 3 so that one side of the nut 4 abuts against the base plate 2. At this time, the U-shaped card plate 1 and the base plate 2 can be fastened to the pipeline. It also includes:

[0028] The connecting sleeve 5 is disposed on the base plate 2. A vibration monitoring mechanism 6 is disposed inside the connecting sleeve 5 for monitoring the vibration of the pipeline. The vibration monitoring mechanism 6 includes a negative electrode sheet 601 disposed inside the connecting sleeve 5. A piezoelectric ceramic body 602 is disposed on a side of the negative electrode sheet 601 away from the connecting sleeve 5. A positive electrode sheet 603 is disposed on a side of the piezoelectric ceramic body 602 away from the negative electrode sheet 601.

[0029] The connecting block 7 is arranged on the outside of the U-shaped card plate 1, and a rectangular opening 8 is opened on the connecting block 7. A first positioning mechanism 9 is arranged in the rectangular opening 8 for positioning the use position of the base plate 2. The first positioning mechanism 9 includes a rotating rod 901 rotatably arranged in the rectangular opening 8, and a gear 902 is provided on the rotating rod 901;

[0030] The controller 10 is disposed on the bottom side of the bottom plate 2 , and the negative electrode sheet 601 and the positive electrode sheet 603 are both electrically connected to the controller 10 via wires.

[0031] Among them, the vibration monitoring mechanism 6 also includes a first spring 604 arranged inside the connecting sleeve 5, the negative electrode sheet 601, the piezoelectric ceramic body 602 and the positive electrode sheet 603 are all located on the inner side of the first spring 604, and an extrusion block 605 is provided at one end of the first spring 604 away from the inner wall of the connecting sleeve 5.

[0032] It should be noted that when the U-shaped clamping plate 1 and the base plate 2 are firmly installed on the pipeline, the first spring 604 makes one side of the extrusion block 605 close to the inner wall of the pipeline. When the pipeline vibrates, the extrusion block 605 will be driven to vibrate, causing the extrusion block 605 to collide with the positive electrode sheet 603. The high-frequency impact causes the positive electrode sheet 603 and the piezoelectric ceramic body 602 inside the negative electrode sheet 601 to be squeezed, and a continuous current is generated by the piezoelectric effect. Then, multiple sets of current data are transmitted through the wires, and the current data is monitored by the controller 10. In order to analyze the circuit data, the current data can be sent to the data analysis system. By adopting advanced algorithms such as small sample transfer learning and reinforcement learning, a small sample database is constructed, which can achieve accurate capture and identification of tiny vibrations and improve the accuracy and reliability of pipeline vibration monitoring.

[0033] Two symmetrically distributed tooth plates 11 are provided on the upper portion of the bottom plate 2 . One end of the tooth plate 11 away from the bottom plate 2 passes through the rectangular opening 8 and meshes with the gear 902 .

[0034] It should be noted that when the connection between the nut 4 and the screw 3 becomes loose during long-term use, the base plate 2 will move downward, and the downward movement of the base plate 2 will drive the tooth plate 11 to move downward. The downward movement of the tooth plate 11 will drive the gear 902 to rotate, and the rotation of the gear 902 will drive the rotating rod 901 to rotate.

[0035] A circular groove 12 is formed at one end of the rotating rod 901 away from the rectangular opening 8. The first positioning mechanism 9 further includes a first magnet 903 disposed in the circular groove 12. An indicator block 904 is provided at the other end of the rotating rod 901 away from the rectangular opening 8. A second magnet 905 is provided on one side of the indicator block 904 for use in conjunction with the first magnet 903. The second magnet 905 is located in the circular groove 12 and is magnetically attracted to the first magnet 903.

[0036] There are two connecting blocks 7 . A positioning block 13 is provided on one side of the connecting block 7 away from the U-shaped clamping plate 1 . A positioning notch 14 for use with the indicator block 904 is provided on one side of the positioning block 13 .

[0037] It should be noted that, as mentioned above, when the rotating rod 901 rotates, the cooperation of the first magnet 903 and the second magnet 905 can drive the indicator block 904 to rotate. The rotation of the indicator block 904 makes the protrusion on the indicator block 904 move away from the positioning notch 14 on the positioning block 13. Therefore, when the staff is conducting an inspection, when they find that the protrusion on the indicator block 904 is away from the positioning notch 14 on the positioning block 13, they can determine that the nut 4 has become loose, which makes it easier to quickly replace the nut 4 without affecting the vibration monitoring effect of the pipeline.

[0038] A warning light 15 is provided on the bottom side of the base plate 2 , and the warning light 15 is electrically connected to the controller 10 .

[0039] It should be noted that when the vibration of the pipeline is too strong, the controller 10 can drive the warning light 15 to warn of the dangerous situation so that the staff can quickly realize that the pipeline vibration is abnormal and there is a potential danger.

[0040] Example 2

[0041] The utility model discloses a piezoelectric ceramic vibration monitoring device, such as Figure 6-Figure 7 As shown, it also includes a second positioning mechanism 16 arranged on the connecting block 7, and the second positioning mechanism 16 includes a pair of T-shaped rods 1601 inserted into the connecting block 7. A second spring 1602 is sleeved on the outer side of the T-shaped rod 1601, and the two ends of the second spring 1602 are respectively connected to the T-shaped rod 1601 and the connecting block 7. The upper side of the two T-shaped rods 1601 is provided with the same stop block 1603, and the side of the tooth plate 11 away from the bottom plate 2 abuts against the bottom side of the stop block 1603, and a scale 17 is provided on the T-shaped rod 1601.

[0042] It should be noted that when the nut 4 becomes loose and the bottom plate 2 moves downward, driving the tooth plate 11 to move downward, since the tooth plate 11 abuts against the stop block 1603, the tooth plate 11 will also drive the stop block 1603 to move downward when it moves downward, and the stop block 1603 moves downward and drives the T-shaped rod 1601 to move downward. Therefore, by observing the changes in the scale 17 on the T-shaped rod 1601, it can also be judged whether the nut 4 is loose. When used in conjunction with the first positioning mechanism 9, it can be accurately judged whether the nut 4 is loose.

[0043] In summary, when the present invention is in use, first put the U-shaped card plate 1 on the pipe, then pass the bottom plate 2 through the two screw rods 3, and when the bottom plate 2 passes through the screw rod 3, the tooth plate 11 will pass through the rectangular opening 8, which will drive the gear 902 to rotate. At the same time, the tooth plate 11 will contact the stopper 1603 and push the stopper 1603 to move, and the movement of the stopper 1603 drives the T-shaped rod 1601 to move. When one side of the bottom plate 2 contacts the outer wall of the pipe, the nut 4 is screwed onto the screw rod 3, and one side of the nut 4 abuts against the bottom plate 2. At this time, the U-shaped card plate 1 and the bottom plate 2 can be fastened to the pipe, and then the specific value of the scale 17 on the T-shaped rod 1601 is noted. Then, the second magnet 905 on the indicator block 904 is inserted into the circular groove 12, and the protrusion on the indicator block 904 is aligned with the positioning notch 14 on the positioning block 13, and then the indicator block 904 is positioned by magnetic attraction using the first magnet 903 and the second magnet 905.

[0044] When the pipeline vibrates, it drives the extrusion block 605 to vibrate, causing the extrusion block 605 to strike the positive electrode sheet 603. The high-frequency impact squeezes the positive electrode sheet 603 and the piezoelectric ceramic body 602 inside the negative electrode sheet 601, generating a continuous current through the piezoelectric effect. Multiple sets of current data are then transmitted through the wires and monitored by the controller 10. When the pipeline vibration is too strong, the controller 10 can drive the warning light 15 to warn of the dangerous situation.

[0045] When the connection between the nut 4 and the screw 3 becomes loose during long-term use, the bottom plate 2 will move downward, and the bottom plate 2 will move downward to drive the tooth plate 11 to move downward, and the tooth plate 11 will move downward to drive the gear 902 to rotate, and the rotation of the gear 902 will drive the rotating rod 901 to rotate, and the rotation of the rotating rod 901 will drive the indicator block 904 to rotate, and the indicator block 904 will rotate so that the protrusion on the indicator block 904 will be away from the positioning notch 14 on the positioning block 13, so that when the staff is conducting inspections, when they see that the protrusion on the indicator block 904 is away from the positioning notch on the positioning block 13 14, immediately check the specific value of the scale 17 on the T-bar 1601. Since the tooth plate 11 will also drive the stop block 1603 to move downward when it moves downward, and the downward movement of the stop block 1603 drives the T-bar 1601 to move downward, the scale 17 on the T-bar 1601 will change. When the scale 17 on the T-bar 1601 is different from the previously recorded data, it can be determined that the nut 4 has become loose, and it is convenient to quickly replace the nut 4 without affecting the vibration monitoring effect of the pipeline. Through two-way verification, it is possible to accurately determine whether the nut 4 is loose.

[0046] The above describes an embodiment of the present invention, but this embodiment is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Ordinary technicians in this field can also make more equivalent embodiments based on the inspiration of this embodiment, all of which are protected by this embodiment.

Claims

1. A piezoelectric ceramic vibration monitoring device, comprising a U-shaped card plate (1) and a base plate (2), wherein screws (3) are provided on both sides of the bottom end of the U-shaped card plate (1), and a nut (4) is provided on the outer thread of the screw (3), and the base plate (2) is inserted into the screw (3), and the bottom end of the base plate (2) contacts the upper end of the nut (4), characterized in that: Also includes: A connecting sleeve (5) is arranged on the bottom plate (2); a vibration monitoring mechanism (6) is arranged inside the connecting sleeve (5) for monitoring the vibration of the pipeline; the vibration monitoring mechanism (6) comprises a negative electrode sheet (601) arranged inside the connecting sleeve (5); a piezoelectric ceramic body (602) is arranged on a side of the negative electrode sheet (601) away from the connecting sleeve (5); and a positive electrode sheet (603) is arranged on a side of the piezoelectric ceramic body (602) away from the negative electrode sheet (601); A connecting block (7) is arranged on the outside of the U-shaped card plate (1), and a rectangular opening (8) is provided on the connecting block (7). A first positioning mechanism (9) is provided in the rectangular opening (8) for positioning the use position of the base plate (2). The first positioning mechanism (9) includes a rotating rod (901) rotatably arranged in the rectangular opening (8), and a gear (902) is provided on the rotating rod (901); The controller (10) is arranged on the bottom side of the bottom plate (2), and the negative electrode sheet (601) and the positive electrode sheet (603) are both electrically connected to the controller (10) via wires.

2. The piezoelectric ceramic vibration monitoring device according to claim 1, characterized in that: The vibration monitoring mechanism (6) further comprises a first spring (604) arranged inside the connecting sleeve (5); the negative electrode sheet (601), the piezoelectric ceramic body (602) and the positive electrode sheet (603) are all located inside the first spring (604); and an extrusion block (605) is provided at one end of the first spring (604) away from the inner wall of the connecting sleeve (5).

3. The piezoelectric ceramic vibration monitoring device according to claim 1, characterized in that: Two symmetrically distributed tooth plates (11) are provided on the upper portion of the base plate (2); one end of the tooth plate (11) away from the base plate (2) passes through the rectangular opening (8) and meshes with the gear (902).

4. The piezoelectric ceramic vibration monitoring device according to claim 1, characterized in that: A circular groove (12) is provided at one end of the rotating rod (901) away from the rectangular opening (8); the first positioning mechanism (9) further comprises a first magnet (903) arranged in the circular groove (12); an indicator block (904) is provided at one end of the rotating rod (901) away from the rectangular opening (8); a second magnet (905) for use in conjunction with the first magnet (903) is provided on one side of the indicator block (904); the second magnet (905) is located in the circular groove (12) and is magnetically attracted to the first magnet (903).

5. The piezoelectric ceramic vibration monitoring device according to claim 4, characterized in that: There are two connecting blocks (7), and a positioning block (13) is provided on one side of the connecting block (7) away from the U-shaped card plate (1). A positioning notch (14) for use with the indicator block (904) is provided on one side of the positioning block (13).

6. The piezoelectric ceramic vibration monitoring device according to claim 1, characterized in that: A warning light (15) is provided on the bottom side of the base plate (2), and the warning light (15) is electrically connected to the controller (10).

7. The piezoelectric ceramic vibration monitoring device according to claim 3, characterized in that: The connecting block (7) is provided with a second positioning mechanism (16), the second positioning mechanism (16) comprising a pair of T-shaped rods (1601) inserted and arranged on the connecting block (7), a second spring (1602) being sleeved on the outer side of the T-shaped rods (1601), the two ends of the second spring (1602) being respectively connected to the T-shaped rods (1601) and the connecting block (7), a same stopper (1603) being provided on the upper side of the two T-shaped rods (1601), a side of the tooth plate (11) away from the bottom plate (2) being in contact with the bottom side of the stopper (1603), and a scale (17) being provided on the T-shaped rod (1601).

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