Device for testing monitoring precision of oil abrasive particle sensor

Abstract

The utility model discloses a device for testing the monitoring precision of an oil abrasive particle sensor. The device comprises a stepping motor, a synchronous wheel, a guide wheel, a synchronous belt and a fixed platform, the stepping motor and the guide wheel are mounted on the fixed platform; the synchronous wheel is installed on an output shaft of the stepping motor, and the synchronous belt is arranged on the synchronous wheel and the guide wheel in a sleeving mode. A plurality of metal abrasive particles with different sizes are fixed on the synchronous belt, and the synchronous belt penetrates through a test flow channel of the oil abrasive particle sensor. The metal abrasive particles repeatedly and circularly pass through the test flow channel of the oil abrasive particle sensor until the nominal minimum particle surface of the oil abrasive particle sensor is detected, and then the test precision of the oil abrasive particle sensor is evaluated. According to the method and the device, the problem of inaccurate test result caused by the defects of tedious steps, low efficiency, low automation degree, false test, missing test and the like of manual test is solved.

Description

Technical Field

[0001] This application belongs to the technical field of oil abrasive sensors, and particularly relates to a monitoring accuracy test device for oil abrasive sensors. Background Technique

[0002] The oil abrasive sensor is a sensing device designed based on the principle of electromagnetic induction, aiming to detect the characteristics of metal particles in oil online. Its working principle is briefly described as follows: within a preset measurement area, a stable alternating magnetic field is generated through electromagnetic excitation. When metal particles pass through this magnetic field, it will cause a disturbance of the magnetic field, which is then accurately measured and converted into an electrical signal. This signal can reflect the characteristics of the metal particles. After signal conditioning, the electrical signal is further converted into a digital signal through analog-to-digital conversion technology for subsequent processing. The processing process can analyze key features such as the material properties (such as ferromagnetic or non-ferromagnetic) of metal particles, size information, and the cumulative number of different metal particles.

[0003] Regarding the test of the monitoring accuracy of the oil abrasive sensor for metal particles (i.e., recognition rate evaluation), currently, the manual method is generally used. The specific steps include adhering individual metal particles with different sizes to carriers that are non-magnetic and suitable for small-diameter pipeline channels, such as nylon cable ties or plastic hoses, and then guiding these carriers through the induction pipeline channel of the sensor. By comparing the recognition results of the sensor with the preset metal particle information, its monitoring accuracy is evaluated. To comprehensively test the monitoring capabilities for different types (ferromagnetic, non-ferromagnetic) and different sizes of metal particles, the above test process needs to be repeated multiple times, each time replacing different types of metal particles. However, this method not only greatly increases the workload of manual operation but also leads to low test efficiency due to the cumbersome steps. In addition, the speed of the particles passing through the induction pipeline is controlled manually, and it is difficult to unify the standards due to differences among different operators, thus introducing inevitable test errors. More importantly, the manual test method is prone to problems such as mismeasurement and missed measurement, highlighting the limitation of its low automation level. Content of the Utility Model

[0004] The embodiment of this application provides a monitoring accuracy test device for an oil abrasive sensor, which solves the problems of cumbersome steps, low efficiency, low automation level, mismeasurement, missed measurement, etc. in manual testing, resulting in inaccurate test results.

[0005] To achieve the above purpose, the embodiment of the utility model provides a monitoring accuracy test device for an oil abrasive sensor, including a stepping motor, a synchronous pulley, a guide pulley, a synchronous belt, and a fixed platform;

[0006] The stepping motor and the guide pulley are installed on the fixed platform;

[0007] The synchronous pulley is mounted on the output shaft of the stepper motor, and the synchronous belt is sleeved on the synchronous pulley and the guide pulley;

[0008] A plurality of metal abrasive grains with different sizes are fixed on the synchronous belt, and the synchronous belt passes through the test flow channel of the oil abrasive grain sensor.

[0009] In a possible implementation manner, the number of the guide pulleys is three, and the three guide pulleys and one synchronous pulley are respectively located at the four corners of the fixed platform.

[0010] In a possible implementation manner, the oil abrasive grain sensor is arranged between two of the guide pulleys.

[0011] In a possible implementation manner, the synchronous belt is made of Teflon.

[0012] In a possible implementation manner, the stepper motor is mounted on a bakelite support block through a motor bracket, and the bakelite support block is mounted on the fixed platform through a fixing bolt.

[0013] In a possible implementation manner, one of the guide pulleys is slidably mounted on a tensioner, and the tensioner is mounted on the fixed platform through a fixing bolt.

[0014] In a possible implementation manner, the tensioner includes a bottom bracket and a sliding seat. The sliding seat is mounted on the bottom bracket, and the bottom bracket is mounted on the fixed platform through a fixing bolt. A sliding groove is provided on the sliding seat, and the mounting seat at the lower end of the guide pulley is slidably mounted in the sliding groove. The end of the locking bolt is screwed into the side wall of the sliding seat and extends into the sliding groove and abuts against the mounting seat at the lower end of the guide pulley.

[0015] One or more technical solutions provided in the embodiments of the present invention have at least the following technical effects or advantages:

[0016] The embodiments of the present invention provide a test device for monitoring the accuracy of an oil abrasive grain sensor. When the synchronous belt rotates in a cycle, it can simulate the flow of oil. The guide pulley plays a guiding role when the synchronous belt rotates. The metal abrasive grains are fixed on the synchronous belt. Through the rotation of the synchronous belt, the metal abrasive grains pass through the test flow channel of the oil abrasive grain sensor. The metal abrasive grains are multiple and have different sizes. The metal abrasive grains repeatedly pass through the test flow channel of the oil abrasive grain sensor until the smallest particle surface specified by the oil abrasive grain sensor is detected, and then the test accuracy of the oil abrasive grain sensor is evaluated. This test device can effectively replace the existing manual test method, and solves the problems of cumbersome steps, low efficiency, low automation, mismeasurement, missed measurement and other deficiencies in manual testing, which lead to inaccurate test results. Description of the Drawings

[0017] To more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the accompanying drawings required for the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments described in the present application. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a schematic structural diagram of an oil abrasive particle sensor monitoring accuracy test device provided by an embodiment of the present utility model.

[0019] Reference numerals: 1 - stepping motor; 2 - synchronous pulley; 3 - guide pulley; 4 - synchronous belt; 5 - fixed platform; 6 - metal abrasive particle; 7 - oil abrasive particle sensor; 8 - bakelite support block; 9 - tensioner; 91 - bottom bracket; 92 - sliding seat; 93 - chute. Specific embodiments

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of them. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present utility model.

[0021] In the description of the embodiments of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model. The terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific situations.

[0022] As Figure 1 shown, the oil abrasive particle sensor monitoring accuracy test device provided by the embodiment of the present utility model includes a stepping motor 1, a synchronous pulley 2, a guide pulley 3, a synchronous belt 4, and a fixed platform 5.

[0023] The stepping motor 1 and the guide pulley 3 are installed on the fixed platform 5.

[0024] A synchronous pulley 2 is installed on the output shaft of the stepping motor 1, and the synchronous belt 4 is sleeved on the synchronous pulley 2 and the guide pulley 3.

[0025] A plurality of metal abrasive grains 6 with different sizes are fixed on the synchronous belt 4, and the synchronous belt 4 passes through the test flow channel of the oil abrasive grain sensor 7.

[0026] It should be noted that the synchronous pulley 2, the guide pulley 3 and the synchronous belt 4 can adopt the arc tooth type or the 3M groove type. The stepping motor 1 is a DC-powered motor. When the synchronous belt 4 rotates in a cycle, it can simulate the flow of oil. The guide pulley 3 plays a guiding role when the synchronous belt 4 rotates. The metal abrasive grains 6 are fixed on the synchronous belt 4. Through the rotation of the synchronous belt 4, the metal abrasive grains 6 pass through the test flow channel of the oil abrasive grain sensor 7. There are multiple metal abrasive grains 6 and their sizes are different. The metal abrasive grains 6 repeatedly pass through the test flow channel of the oil abrasive grain sensor 7 until the smallest particle surface nominal by the oil abrasive grain sensor 7 is detected, thereby evaluating the test accuracy of the oil abrasive grain sensor 7. This test device can effectively replace the existing manual test method, solve the problems of cumbersome steps, low efficiency, low automation, mismeasurement, missed measurement, etc. in manual testing, which lead to inaccurate test results.

[0027] In this embodiment, the number of the guide pulleys 3 is three, and the three guide pulleys 3 and one synchronous pulley 2 are respectively located at the four corners of the fixed platform 5.

[0028] It should be noted that the three guide pulleys 3 are respectively distributed at the upper left corner, the upper right corner and the lower left corner of the fixed platform 5. The guide pulley 3 is used to guide the movement direction of the synchronous belt 4.

[0029] In this embodiment, the oil abrasive grain sensor 7 is arranged between the two guide pulleys 3.

[0030] It should be noted that in this way, the metal abrasive grains 6 can pass through the test flow channel of the oil abrasive grain sensor 7 more stably.

[0031] In this embodiment, the synchronous belt 4 is made of Teflon material.

[0032] It should be noted that the surface of the synchronous belt 4 made of Teflon material is smooth and easy to clean, and can avoid the attachment of other impurity particles in the test environment during the actual test process, ensuring the test accuracy.

[0033] In this embodiment, the stepping motor 1 is installed on the bakelite support block 8 through a motor bracket, and the bakelite support block 8 is installed on the fixed platform 5 through a fixing bolt.

[0034] It should be noted that the bakelite support block 8 has good insulation performance. While providing support for the stepping motor 1, the stepping motor 1 contacts the fixed platform 5, preventing electromagnetic noise from being conducted to the fixed platform 5 when the motor starts and operates, thereby preventing the electromagnetic noise from being conducted into the oil abrasive particle sensor 7 to avoid electromagnetic interference to the oil abrasive particle sensor 7.

[0035] In this embodiment, one of the guide wheels 3 is slidably mounted on the tensioner 9, and the tensioner 9 is mounted on the fixed platform 5 by fixing bolts.

[0036] It should be noted that by adjusting the position of the guide wheel 3 on the tensioner 9, the tightness of the timing belt 4 can be controlled, enabling the timing belt 4 to smoothly pass through the test flow channel of the oil abrasive particle sensor 7.

[0037] In this embodiment, the tensioner 9 includes a bottom bracket 91 and a sliding seat 92. The sliding seat 92 is mounted on the bottom bracket 91, and the bottom bracket 91 is mounted on the fixed platform 5 by fixing bolts. A chute 93 is provided on the sliding seat 92, and the mounting seat at the lower end of the guide wheel 3 is slidably mounted in the chute 93. The end of the locking bolt is screwed into the side wall of the sliding seat 92 and extends into the chute 93 to abut against the mounting seat at the lower end of the guide wheel 3.

[0038] It should be noted that the locking bolt is used to relatively fix the sliding seat 92 and the mounting seat at the lower end of the guide wheel 3.

[0039] In this embodiment, for those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present utility model, the present utility model can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, it is intended to embrace all changes falling within the meaning and scope of the equivalent elements of the claims in the present utility model.

Claims

1. An oil abrasive particle sensor monitoring accuracy test device, characterized in that: It includes a stepper motor (1), a synchronous pulley (2), a guide pulley (3), a synchronous belt (4), and a fixed platform (5); The stepper motor (1) and the guide pulley (3) are installed on the fixed platform (5); The synchronous pulley (2) is installed on the output shaft of the stepper motor (1), and the synchronous belt (4) is sleeved on the synchronous pulley (2) and the guide pulley (3); A plurality of metal abrasive grains (6) with different sizes are fixed on the synchronous belt (4), and the synchronous belt (4) passes through the test flow channel of the oil abrasive grain sensor (7).

2. The oil abrasive particle sensor monitoring accuracy test device according to claim 1, characterized in that: The number of the guide pulleys (3) is three, and the three guide pulleys (3) and one synchronous pulley (2) are respectively located at the four corners of the fixed platform (5).

3. The oil abrasive particle sensor monitoring accuracy test device according to claim 2, characterized in that: The oil abrasive grain sensor (7) is arranged between two of the guide pulleys (3).

4. The oil abrasive particle sensor monitoring accuracy test device according to claim 1, characterized in that: The synchronous belt (4) is made of Teflon material.

5. The oil abrasive particle sensor monitoring accuracy test device according to claim 1, characterized in that: The stepper motor (1) is installed on a bakelite support block (8) through a motor bracket, and the bakelite support block (8) is installed on the fixed platform (5) through a fixing bolt.

6. The oil abrasive particle sensor monitoring accuracy test device according to claim 1, characterized in that: One of the guide pulleys (3) is slidably installed on a tensioner (9), and the tensioner (9) is installed on the fixed platform (5) through a fixing bolt.

7. The oil abrasive particle sensor monitoring accuracy test device according to claim 6, characterized in that: The tensioner (9) includes a bottom bracket (91) and a sliding seat (92). The sliding seat (92) is installed on the bottom bracket (91). The bottom bracket (91) is installed on the fixed platform (5) through a fixing bolt. A chute (93) is provided on the sliding seat (92). The mounting seat at the lower end of the guide pulley (3) is slidably installed in the chute (93). The end of the locking bolt is screwed into the side wall of the sliding seat (92) and extends into the chute (93) and abuts against the mounting seat at the lower end of the guide pulley (3).

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