Axial plunger pump with cavitation fault diagnosis device

Abstract

The utility model discloses a cavitation fault diagnosis device for an axial plunger pump, which relates to the field of plunger pump fault diagnosis and comprises a plunger pump, a liquid inlet pipe and a liquid outlet pipe are arranged on the plunger pump, a diagnosis box group is mounted on the outer side surface of the plunger pump, the diagnosis box group is fixedly clamped with the plunger pump, a vibration detection mechanism is mounted in the diagnosis box group, and the plunger pump is connected with the diagnosis box group. The vibration detection mechanism is detachably and fixedly connected with the diagnosis box group; according to the utility model, the pressure sensors are arranged on the liquid inlet pipe and the liquid outlet pipe of the plunger pump, so that the pressure change in the liquid inlet and outlet processes can be easily monitored in real time, and meanwhile, the vibration detection mechanism is positioned and mounted through the diagnosis box group; after the diagnosis box set is buckled on the plunger pump, the working vibration condition of the plunger pump can be monitored in real time through the vibration detection mechanism, and real-time diagnosis in the using process of the plunger pump is achieved through cooperation of vibration detection and pressure detection.

Description

Technical Field

[0001] The utility model relates to the technical field of plunger pump fault diagnosis, in particular to an axial plunger pump with a cavitation fault diagnosis device. Background Art

[0002] The axial piston pump is the power source in the hydraulic system and one of the core power components in the hydraulic field. Due to its small size, convenient flow control, and long life, it is widely used in mechanical processing, transportation, aerospace and other fields.

[0003] The existing Chinese patent with announcement number CN215213791U discloses an axial piston pump plunger and an axial piston pump, including a plunger ball head and a plunger rod. A bearing is provided at the end of the plunger rod, and the plunger rod is driven to swing through the bearing.

[0004] With respect to the above-mentioned related technologies, it is found that the fault detection of the existing plunger pump can only be carried out by manually determining the cause and location of the fault based on experience or investigation. The detection task is arduous and the overall efficiency is low. Utility Model Content

[0005] The present application provides an axial piston pump with a cavitation fault diagnosis device, which is used to solve the problems raised in the background technology.

[0006] The utility model is achieved in this way:

[0007] An axial piston pump with a cavitation fault diagnostic device comprises a piston pump, wherein a liquid inlet pipe and a liquid outlet pipe are arranged on the piston pump, a diagnostic box group is installed on the outer side surface of the piston pump, the diagnostic box group is fixedly engaged with the piston pump, a vibration detection mechanism is installed in the diagnostic box group, the vibration detection mechanism is detachably fixedly connected to the diagnostic box group, pressure sensors are installed on the liquid inlet pipe and the liquid outlet pipe, and a positioning bracket matching the diagnostic box group is also installed on the side of the diagnostic box group.

[0008] Furthermore, the diagnostic box assembly includes a control box and an elastic buckle frame, the elastic buckle frame is symmetrically arranged on the upper end surface of the control box, and the elastic buckle frame is fixedly connected to the control box.

[0009] Furthermore, a positioning groove for installing the vibration detection mechanism is provided in the middle of the control box, and horizontal slots are provided on both sides of the positioning groove.

[0010] Furthermore, the vibration detection mechanism includes a detection seat and a vibration sensor, and the vibration sensor is slidably mounted on the head of the detection seat.

[0011] Furthermore, the detection seat includes a seat shell, an extension plate and a ring frame, the extension plate is integrally formed and arranged at the front end of the seat shell, the ring frame is arranged directly above the extension plate, and the ring frame and the extension plate are integrally formed.

[0012] Furthermore, a pull ring is fixedly mounted on the seat shell, and a spring supporting the vibration sensor is fixedly mounted on the upper end surface of the extension plate.

[0013] Furthermore, the positioning bracket includes a cross bar and a vertical frame, the vertical frame is fixedly mounted on the outer end of the cross bar, and the end of the pressure sensor is engaged in the vertical frame.

[0014] Compared with the prior art, the utility model has the following beneficial effects: the utility model installs pressure sensors on the liquid inlet and outlet pipes of the plunger pump, thereby facilitating real-time monitoring of pressure changes during the liquid inlet and outlet processes; at the same time, the vibration detection mechanism is positioned and installed through the diagnostic box group; after the diagnostic box group is buckled on the plunger pump, the vibration condition of the plunger pump can be monitored in real time through the vibration detection mechanism; real-time diagnosis of the plunger pump during use can be achieved through the coordination of vibration detection and pressure detection; when the vibration values ​​and pressure values ​​found deviate from normal values, timely warning can be given, which has the advantages of accurate detection and reducing the labor of personnel detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a three-dimensional diagram of the overall structure in the embodiment of the utility model;

[0017] Figure 2 yes Figure 1 a right side view of the device shown;

[0018] Figure 3 yes Figure 1 A stereoscopic diagram of the diagnostic box assembly and the positioning bracket shown in FIG.

[0019] Figure 4 yes Figure 3 a front view of the device shown;

[0020] Figure 5 yes Figure 1 A three-dimensional diagram of the vibration detection mechanism shown;

[0021] Figure 6 yes Figure 5Front view of the device shown.

[0022] In the figure: 1. plunger pump; 11. liquid inlet pipe; 12. liquid outlet pipe; 2. diagnostic box assembly; 21. control box; 211. positioning slot; 212. horizontal slot; 22. elastic buckle frame; 3. vibration detection mechanism; 31. detection seat; 311. seat shell; 312. extension plate; 313. ring frame; 314. pull ring; 315. spring; 32. vibration sensor; 4. pressure sensor; 5. positioning bracket; 51. cross bar; 52. vertical frame. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is claimed, but merely represents the selected embodiments of the utility model.

[0024] Reference Figure 1 , Figure 2 and Figure 3 As shown, an axial piston pump with a cavitation fault diagnostic device includes a plunger pump 1, on which a liquid inlet pipe 11 and a liquid outlet pipe 12 are provided, a diagnostic box group 2 is installed on the outer side of the plunger pump 1, the diagnostic box group 2 is fixed with the plunger pump 1, a vibration detection mechanism 3 is installed in the diagnostic box group 2, the vibration detection mechanism 3 is detachably fixedly connected to the diagnostic box group 2, pressure sensors 4 are installed on the liquid inlet pipe 11 and the liquid outlet pipe 12, the pressure sensors 4 are synchronously fixed to the liquid inlet pipe 11 and the liquid outlet pipe 12 by threads, and a positioning bracket 5 matching the diagnostic box group 2 is also installed on the side of the diagnostic box group 2. By arranging a liquid inlet pipe 11 and a liquid outlet pipe 12 on the plunger pump 1, the pressure sensor 4 can be installed to detect the pressure of the liquid inlet and the liquid outlet when it is easy to use, and the vibration detection mechanism 3 can be positioned and installed by setting the diagnostic box group 2. When it is easy to use, the diagnostic box group 2 can be snapped onto the outer surface of the plunger pump 1 to ensure that the vibration detection mechanism 3 can be attached to the plunger pump 1 to detect its working process. By setting the positioning bracket 5 to cooperate with the end of the pressure sensor 4, it is easy to limit the installation of the diagnostic box group 2 and protect the pressure sensor 4.

[0025] Reference Figure 3 and Figure 4As shown, the diagnostic box assembly 2 includes a control box 21 and an elastic buckle frame 22, the elastic buckle frame 22 is symmetrically arranged on the upper end surface of the control box 21, and the elastic buckle frame 22 is fixedly connected to the control box 21. The structural setting of the diagnostic box assembly 2 ensures that the control box 21 can be stably buckled on the outer surface of the plunger pump 1 through the elastic buckle frame 22 when in use, and the control box 21 is used to set corresponding circuit components and controllers, etc., so as to facilitate the pressure sensor 4 and the vibration detection mechanism 3 to transmit the detection information to the outside. A positioning groove 211 for the vibration detection mechanism 3 to be installed is provided in the middle of the control box 21, and horizontal card grooves 212 are provided on both sides of the positioning groove 211. The positioning groove 211 and the horizontal card groove 212 are set to ensure that the vibration detection mechanism 3 can be stably installed on the diagnostic box assembly 2.

[0026] Reference Figure 5 and Figure 6 As shown, the vibration detection mechanism 3 includes a detection seat 31 and a vibration sensor 32, and the vibration sensor 32 is slidably mounted on the head of the detection seat 31. The vibration sensor 32 is installed on the detection seat 31 by setting the structure of the vibration detection mechanism 3, so that the vibration sensor 32 can be attached to the lower end surface of the plunger pump 1 for vibration detection when in use. The detection seat 31 includes a seat shell 311, an extension plate 312 and a collar frame 313, the extension plate 312 is integrally formed and arranged at the front end of the seat shell 311, the collar frame 313 is arranged directly above the extension plate 312, and the collar frame 313 is integrally formed with the extension plate 312. A pull ring 314 is fixedly mounted on the seat shell 311, and a spring 315 supporting the vibration sensor 32 is fixedly mounted on the upper end surface of the extension plate 312. The structure of the detection seat 31 is set to ensure that an extension plate 312 is set on the seat shell 311, and then the vibration sensor 32 is supported and installed by the spring 315 on the extension plate 312. The setting of the ring frame 313 ensures that the vibration sensor 32 can only slide up and down, so that when in use, the vibration sensor 32 can be stably attached to the plunger pump 1 for detection under the action of the spring 315.

[0027] Reference Figure 1 and Figure 3 As shown, the positioning bracket 5 includes a crossbar 51 and a vertical frame 52. The vertical frame 52 is fixedly mounted on the outer end of the crossbar 51, and the end of the pressure sensor 4 is engaged in the vertical frame 52. The structural setting of the positioning bracket 5 ensures that the crossbar 51 supports and fixes the vertical frame 52, so that the vertical frame 52 can be stably maintained in a vertical state when it is easy to use.

[0028] Working principle: When installation is required, first insert the vibration detection mechanism 3 into the positioning groove 211 of the diagnostic box group 2, then fix the pressure sensor 4 on the liquid inlet pipe 11 and the liquid outlet pipe 12 in turn, and finally buckle the diagnostic box group 2 on the plunger pump 1 through the elastic buckle frame 22. During the buckling and installation process, the vertical frame 52 needs to be sleeved on the end of the pressure sensor 4, so that the diagnosis of the plunger pump 1 during use can be achieved through the coordination of vibration detection and pressure detection. When the detected vibration value and pressure value deviate from the normal value, the purpose of timely warning can be achieved.

[0029] The above description is only the preferred implementation of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An axial piston pump with a cavitation fault diagnosis device, comprising a piston pump (1), wherein the piston pump (1) is provided with a liquid inlet pipe (11) and a liquid outlet pipe (12), characterized in that: A diagnostic box assembly (2) is mounted on the outer surface of the plunger pump (1), the diagnostic box assembly (2) being fixedly engaged with the plunger pump (1), a vibration detection mechanism (3) being mounted in the diagnostic box assembly (2), the vibration detection mechanism (3) being detachably fixedly connected to the diagnostic box assembly (2), pressure sensors (4) being mounted on both the liquid inlet pipe (11) and the liquid outlet pipe (12), and a positioning bracket (5) matching the diagnostic box assembly (2) being mounted on the side of the diagnostic box assembly (2).

2. An axial piston pump with a cavitation fault diagnosis device according to claim 1, characterized in that: The diagnostic box assembly (2) comprises a control box (21) and an elastic buckle frame (22); the elastic buckle frame (22) is symmetrically arranged on the upper end surface of the control box (21), and the elastic buckle frame (22) is fixedly connected to the control box (21).

3. The axial piston pump with a cavitation fault diagnosis device according to claim 2, characterized in that: A positioning groove (211) for installing the vibration detection mechanism (3) is provided in the middle of the control box (21), and horizontal slots (212) are provided on both sides of the positioning groove (211).

4. The axial piston pump with a cavitation fault diagnosis device according to claim 3, characterized in that: The vibration detection mechanism (3) comprises a detection seat (31) and a vibration sensor (32), wherein the vibration sensor (32) is slidably mounted on the head of the detection seat (31).

5. The axial piston pump with a cavitation fault diagnosis device according to claim 4, characterized in that: The detection seat (31) comprises a seat shell (311), an extension plate (312) and a collar frame (313); the extension plate (312) is integrally formed and arranged at the front end of the seat shell (311); the collar frame (313) is arranged directly above the extension plate (312); and the collar frame (313) and the extension plate (312) are integrally formed.

6. The axial piston pump with a cavitation fault diagnosis device according to claim 5, characterized in that: A pull ring (314) is fixedly mounted on the seat shell (311), and a spring (315) supporting the vibration sensor (32) is fixedly mounted on the upper end surface of the extension plate (312).

7. The axial piston pump with a cavitation fault diagnosis device according to claim 6, characterized in that: The positioning bracket (5) comprises a crossbar (51) and a vertical frame (52); the vertical frame (52) is fixedly mounted on the outer end of the crossbar (51); and the end of the pressure sensor (4) is engaged in the vertical frame (52).

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