Pressure fixing device for sensor calibration

Abstract

The utility model relates to the technical field of auxiliary devices of measuring instruments special for petroleum, in particular to a pressurizing and fixing device for sensor calibration. The device comprises a pressurizing module and a fixing module, the pressurizing module is slidably connected with the fixing module; a sensing film of the sensor is arranged between the pressurizing module and the fixing module; and the pressurizing module can apply pressure to the sensing film. According to the scheme, by improving a pressurizing and fixing mechanism, it is ensured that pressure is evenly applied in the sensor calibration process, the sealing performance between the sealing cover and the sensing film is not affected, the efficiency and accuracy of calibration work are effectively improved, and errors and problems caused by misoperation or equipment defects are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of auxiliary devices for petroleum-specific measuring instruments, in particular to a sensor calibration pressurizing and fixing device. Background Art

[0002] During the drilling process, density sensors are used to monitor the performance of drilling fluid in real time to ensure the safety of drilling operations. However, existing density sensor calibration pressurization devices have certain defects. During the calibration process, due to the poor sealing of the pressurization device, the calibration data errors during pressurization are large, which in turn affects the timely completion of production tasks. The pressurization device mainly relies on gravity to achieve sealing, but when the calibration pressure is high, the seal often fails. In addition, after long-term use, the surface of the density sensor's sensing membrane will corrode, resulting in poor sealing and the inability to achieve the desired pressurization effect. Although the sealing can sometimes be increased by manually pressing the pressurization device, this method is time-consuming and labor-intensive and can easily lead to uneven pressing force and air leakage, significantly reducing the calibration efficiency of the sensor. Utility Model Content

[0003] The utility model provides a sensor calibration pressurizing and fixing device to alleviate the problems of repeated debugging and low operating efficiency during calibration.

[0004] In order to alleviate the above technical problems, the technical solution provided by the present invention is:

[0005] This solution provides a sensor calibration pressurizing and fixing device, including a pressurizing module and a fixing module;

[0006] The pressurizing module is slidably connected to the fixing module;

[0007] The sensing membrane of the sensor is arranged between the pressurizing module and the fixing module;

[0008] The pressurizing module is capable of applying pressure to the sensing membrane.

[0009] Furthermore,

[0010] The fixing module includes a first fixing plate, a second fixing plate and a guide column;

[0011] The first fixing plate is arranged on the upper portion of the second fixing plate;

[0012] Both ends of the first fixing plate are fixedly connected to the second fixing plate through guide columns.

[0013] Furthermore,

[0014] The pressurizing module includes a moving plate, a pressurizing plate and an adjusting screw;

[0015] The moving plate and the pressure plate are respectively connected to the guide posts in a sliding manner;

[0016] The movable plate is arranged on the upper part of the pressure plate;

[0017] The adjusting screw is plugged into the first fixed plate and extends downward to be rotatably connected to the movable plate.

[0018] Furthermore,

[0019] The pressurizing module also includes a high-pressure spring;

[0020] The high-pressure spring is sleeved with the guide column, one end of the spring abuts against the lower part of the pressure plate, and the other end abuts against the upper part of the second fixing plate.

[0021] Furthermore,

[0022] The high-pressure spring always has the ability to drive the pressure plate to move upward.

[0023] Furthermore,

[0024] A handle is provided on the upper part of the adjusting screw.

[0025] Furthermore,

[0026] The second fixing plate is provided with an adapting hole.

[0027] The beneficial effects of the sensor calibration pressurization fixture in the utility model are analyzed as follows:

[0028] The device comprises a pressurizing module and a fixing module; the pressurizing module and the fixing module are slidably connected; the sensing membrane of the sensor is arranged between the pressurizing module and the fixing module; the pressurizing module can apply pressure to the sensing membrane.

[0029] This solution ensures uniform pressure application during sensor calibration by improving the pressurization and fixing mechanism, and the sealing performance between the sealing cover and the sensing membrane is not affected. It effectively improves the efficiency and accuracy of the calibration work and reduces errors and problems caused by improper operation or equipment defects. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in related technologies, the following briefly introduces the drawings required for use in the specific implementation methods or related technical descriptions. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0031] Figure 1 This is a structural diagram of the device.

[0032] icon:

[0033] 100-pressurization module; 110-moving plate; 120-pressurization plate; 130-adjusting screw; 131-handle; 140-high-pressure spring;

[0034] 200 - fixed module; 210 - first fixed plate; 220 - second fixed plate; 221 - adapter hole; 230 - guide column. DETAILED DESCRIPTION

[0035] Existing density sensors often require repeated debugging during pressurized calibration due to issues such as calibration pressure and sealing performance, resulting in reduced operating efficiency. In addition, manual press calibration is prone to air leakage due to uneven pressing force, which greatly affects the progress of sensor calibration.

[0036] In view of this, if Figure 1 As shown, this solution provides a sensor calibration pressurization and fixing device to alleviate the above problems. The device includes a pressurization module 100 and a fixing module 200;

[0037] The pressurizing module 100 is slidably connected to the fixing module 200;

[0038] The sensing membrane of the sensor is arranged between the pressurizing module 100 and the fixing module 200;

[0039] The pressurizing module 100 can apply pressure to the sensing membrane.

[0040] When calibrating the density sensor, first place the sensing membrane into the space between the pressurizing module 100 and the fixing module 200, then start the pressurizing module 100 manually or automatically, so that the pressurizing module 100 applies even pressure toward the sensing membrane to calibrate the density sensor.

[0041] Regarding the shape and structure of the fixing module 200, specifically:

[0042] The fixing module 200 includes a first fixing plate 210, a second fixing plate 220 and a guide post 230;

[0043] The first fixing plate 210 is disposed on the upper portion of the second fixing plate 220;

[0044] Both ends of the first fixing plate 210 are fixedly connected to the second fixing plate 220 via guide pillars 230 .

[0045] Specifically, the fixing module 200 is an I-shaped structure as a whole, and the first fixing plate 210, the second fixing plate 220 and the guide column 230 can be connected and fixed by threaded connection or other methods that are convenient for assembly and disassembly.

[0046] Regarding the shape and structure of the pressurizing module 100, specifically:

[0047] The pressurizing module 100 includes a moving plate 110 , a pressurizing plate 120 and an adjusting screw 130 ;

[0048] The movable plate 110 and the pressure plate 120 are respectively slidably connected to the guide posts 230;

[0049] The movable plate 110 is disposed on the upper portion of the pressure plate 120;

[0050] The adjusting screw 130 is plugged into the first fixed plate 210 and extends downward to be rotatably connected to the movable plate 110 .

[0051] Specifically, the movable plate 110 and the adjusting screw 130 constitute a motion structure of a lead screw and a nut seat. The rotation of the adjusting screw 130 can drive the movable plate 110 to move. The guide column 230 can limit the movement direction of the movable plate 110 so that it can only move up and down along the length direction of the guide column 230. When moving downward, it can drive the pressure plate 120 to move downward to apply pressure to the sensing membrane.

[0052] In this solution, the pressurizing module 100 further includes a high-pressure spring 140;

[0053] The high-pressure spring 140 is sleeved with the guide post 230 , with one end abutting against the lower portion of the pressure plate 120 and the other end abutting against the upper portion of the second fixing plate 220 ;

[0054] The high-pressure spring 140 always has the ability to drive the pressure plate 120 to move upward.

[0055] Specifically, when the adjusting screw 130 is used to apply pressure to the pressure plate 120 , the high-pressure spring 140 can provide a certain buffer and apply a certain damping upward to prevent the calibrated pressure from being too high, which would cause the sealing of the sensing membrane to fail.

[0056] In this solution, a handle 131 is provided on the upper portion of the adjusting screw 130 to facilitate operation by workers; of course, a driving mechanism may also be provided to connect with the adjusting screw 130 to control the rotation of the adjusting screw 130 .

[0057] In this solution, the second fixing plate 220 is provided with an adapter hole 221, the size of which corresponds to the air supply hole on the sensing membrane sealing cover, and is used to locate the installation position of the sensing membrane to ensure that pressure can be evenly applied to the sensing membrane during calibration.

[0058] This solution has at least the following beneficial effects:

[0059] Traditional calibration methods often require repeated adjustments due to issues with calibration pressure and sealing performance, reducing efficiency. Furthermore, manual pressure calibration can easily lead to uneven force and air leaks, seriously affecting calibration results. In contrast, this device significantly improves calibration efficiency and accuracy through the following advantages:

[0060] 1. Uniform pressure: The pressure module 100 is slidably connected to the fixed module 200, allowing the pressure plate 120 to apply pressure evenly and stably to the sensing membrane. This uniform pressure mechanism avoids inconsistent pressure caused by uneven manual operation and reduces air leakage.

[0061] 2. Automated Adjustment: The screw and nut mechanism formed by the adjusting screw 130 and the movable plate 110 allows for more precise movement of the pressure plate 120, making automatic or manual pressure adjustment more convenient. Furthermore, the handle 131 on the adjusting screw 130 simplifies operation and improves work efficiency.

[0062] 3. High-pressure spring buffering: The high-pressure spring 140 provides effective buffering and damping for the pressure plate 120, preventing the application of excessive pressure from causing the sensing membrane seal to fail, thereby improving the stability and reliability of the sensor calibration.

[0063] 4. Fixed module design: The I-shaped structure of the fixed module 200 ensures the stable movement of the pressure plate 120 through the guide column 230. At the same time, the adapter hole 221 ensures the correct positioning of the sensing membrane, making the calibration process more accurate and reducing problems caused by positioning errors.

[0064] In summary, this solution ensures uniform pressure application during sensor calibration by improving the pressurization and fixing mechanism, and the sealing performance between the sealing cover and the sensing membrane is not affected, effectively improving the efficiency and accuracy of the calibration work and reducing errors and problems caused by improper operation or equipment defects.

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A sensor calibration pressurization fixture, characterized by: It comprises a pressurizing module (100) and a fixing module (200); The pressurizing module (100) is slidably connected to the fixing module (200); The sensing film of the sensor is arranged between the pressurizing module (100) and the fixing module (200); The pressurizing module (100) is capable of applying pressure to the sensing membrane.

2. The sensor calibration pressurizing fixture according to claim 1, characterized in that: The fixing module (200) comprises a first fixing plate (210), a second fixing plate (220) and a guide column (230); The first fixing plate (210) is arranged on an upper portion of the second fixing plate (220); Both ends of the first fixing plate (210) are fixedly connected to the second fixing plate (220) via the guide columns (230).

3. The sensor calibration pressurizing and fixing device according to claim 2, characterized in that: The pressurizing module (100) comprises a moving plate (110), a pressurizing plate (120) and an adjusting screw (130); The movable plate (110) and the pressure plate (120) are respectively slidably connected to the guide column (230); The movable plate (110) is arranged on the upper portion of the pressure plate (120); The adjusting screw (130) is plugged into the first fixed plate (210) and extends downward to be rotatably connected to the movable plate (110).

4. The sensor calibration pressurizing fixture according to claim 3, characterized in that: The pressurizing module (100) further includes a high-pressure spring (140); The high-pressure spring (140) is sleeved with the guide column (230), with one end abutting against the lower portion of the pressure plate (120) and the other end abutting against the upper portion of the second fixing plate (220).

5. The sensor calibration pressurizing and fixing device according to claim 4, characterized in that: The high-pressure spring (140) always has the ability to drive the pressure plate (120) to move upward.

6. The sensor calibration pressurizing fixture according to claim 5, characterized in that: A handle (131) is provided on the upper portion of the adjusting screw (130).

7. The sensor calibration pressurizing fixture according to claim 6, characterized in that: The second fixing plate (220) is provided with an adapting hole (221).

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