Automatic calibration device suitable for static leveling instrument

Abstract

The utility model provides an automatic calibration device suitable for a static force level gauge, relates to the technical field of measurement, and is used for detecting the precision and the stability of the static force level gauge. The device is composed of a calibration table and a liquid level control table, a plurality of hydrostatic level positioning grooves are formed in the calibration table, a plurality of hydrostatic level gauges to be calibrated can be rapidly fixed, and the calibration table is connected with the liquid level control table through a liquid connecting pipe; the working state of the liquid level console is controlled by a control display screen and a control button on the calibration table, a ball screw is driven to rotate, the liquid storage tank is driven to ascend and descend at a constant speed in the vertical direction, the liquid level position is changed, and ascending and descending of the liquid level of the to-be-calibrated static force level gauge on the calibration table are controlled through a liquid connecting pipe, so that calibration of the static force level gauge is achieved; the device can effectively reduce the shaking of the liquid level, reduce the size and weight of the device, is convenient to carry, supports the calibration of a plurality of static level gauges at one time, can be quickly mounted and dismounted, and improves the calibration efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of measurement, and particularly relates to an automatic calibration device suitable for a static level gauge. Background Art

[0002] Static level gauges are widely used in the settlement monitoring of buildings (structures) due to their high precision, easy installation, and automation. Their working principle is that static level gauges connected by liquid communicating pipes are installed at each monitoring point. There is no need for line of sight between the monitoring points. Using the principle of liquid communicating vessels, the settlement change amount of the monitoring points is obtained by measuring the relative height difference of the liquid level in the instrument.

[0003] Before a static level gauge is put into use, it needs to be calibrated to detect the accuracy and stability of the instrument. The standard pad method realizes the liquid level change by manually increasing or decreasing standard pads. The liquid level fluctuation generated when manually increasing or decreasing the pads takes a certain time to stabilize, which is time-consuming and laborious; for example, in an automatic detection device for a high-precision static level gauge disclosed in CN114964310A, the number of static level gauges that can be calibrated at one time is small, and the detection efficiency needs to be improved. Summary of the Invention

[0004] The purpose of the utility model is to solve the deficiencies of the above calibration methods and devices, and provide an automatic calibration device suitable for a static level gauge. The device drives a ball screw to rotate uniformly through a motor, drives a liquid storage tank fixed on the ball screw to move vertically up and down, and changes the liquid level position; the calibration table is provided with 10 positioning grooves, and the liquid storage tank and the static level gauge to be calibrated are connected through a liquid connecting pipe, so that multiple static level gauges can be calibrated at one time, and it is convenient for quick installation and disassembly.

[0005] The implementation of the utility model is composed of the following technical solutions.

[0006] An automatic calibration device applicable to a static level is composed of a calibration table and a liquid level control console, and is used to detect the accuracy and stability of the static level. Its characteristics are as follows: The calibration table is provided with a static level positioning groove, and the static level to be calibrated is fixed through an arc-shaped positioning retaining groove, positioning holes and buckles that match the shape and size of the base of the static level; a liquid connection pipe orifice is arranged on one side of the retaining groove, and the static level to be calibrated and the liquid storage tank on the liquid level control console are connected through a liquid connection pipe, so that when the liquid level of the liquid storage tank changes, the liquid level in the static level to be calibrated can change accordingly; a signal connection port is arranged on the other side of the positioning retaining groove, which is connected to the sensor in the static level to be calibrated to obtain the information of the liquid level change; the liquid level control console is provided with a lead screw module and a liquid storage tank, and the lead screw module includes a ball screw and a motor; the motor is controlled by a control display screen and control buttons on the calibration table for its working state, drives the ball screw to rotate, drives the liquid storage tank fixed on the ball screw to move up and down uniformly in the vertical direction, and controls the rise and fall of the liquid level of the static level to be calibrated on the calibration table through the liquid connection pipe; a liquid level display screen indicates the liquid level height of the liquid storage tank.

[0007] The advantages of the present utility model are that by driving the ball screw to rotate by the motor, driving the liquid storage tank fixed on the ball screw to move up and down uniformly in the vertical direction, changing the liquid level position, it can reduce the liquid level fluctuation, and reduce the volume and weight of the device, which is convenient for handling; the calibration table is provided with multiple positioning grooves, and the liquid storage tank and the static level to be calibrated can be interconnected, supporting the calibration of multiple static levels at one time, and can be quickly installed and disassembled, improving the calibration efficiency. Description of the Drawings

[0008] Figure 1 It is a three-dimensional view of the present utility model.

[0009] Figure 2 It is a three-dimensional view of the liquid level control console of the present utility model.

[0010] Figure 3 It is a top view of the calibration table of the present utility model.

[0011] Figure 4 It is a three-dimensional view of the open state of the buckle of the present utility model.

[0012] Figure 5 It is a three-dimensional view of the fixed state of the buckle of the present utility model. Detailed Embodiment

[0013] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0014] Figures 1 - 5 The marks (1) to (20) in it are respectively: calibration table (1), calibration table bracket (2), static level positioning groove (3), control display screen (4), liquid level display (5), control button (6), liquid level control console (7), lead screw module (8), liquid storage tank (9), liquid connection pipe (10), ball screw (11), motor (12), buckle (13), pull rod (13-1), fixed head (13-2), liquid connection pipe orifice (14), positioning stop groove (15), positioning hole (16), signal connection port (17), fixing hole (18), static level instrument (19), static level instrument base (20).

[0015] The described calibration table (1) includes: static level positioning groove (3), control display screen (4), liquid level display screen (5), control button (6).

[0016] The static level positioning groove (3) includes: buckle (13), liquid connection pipe orifice (14), positioning stop groove (15), positioning hole (16), signal connection port (17).

[0017] The liquid level control console (7) includes: lead screw module (8), liquid storage tank (9), liquid connection pipe (10).

[0018] The lead screw module (8) includes: ball screw (11), motor (12).

[0019] Embodiment: In the specific implementation process, the working mode of this device is as follows.

[0020] The calibration table (1) is assembled and fixed on the calibration table support (2) by screws and nuts. Each static level positioning groove (3) can hold a static level to be calibrated (19), and 1 to 10 static levels (19) can be calibrated each time. The positioning stop groove (15) is arc-shaped and can closely fit the circular base (20) of the static level. After the base (20) of the static level is aligned with the positioning holes (16) symmetrically located at both ends of the positioning stop groove (15), it can be accurately placed in the static level positioning groove (3). Then, screws are tightened at the positioning holes (16), and the pull rod (13-1) of the buckle (13) is pushed to drive the fixing head (13-2) to embed into the fixing hole (18), completing the positioning and fixing of the static level (19) to prevent it from sliding. When the static level (19) is positioned and fixed, the open and fixed states of the buckle (13) are as Figure 4 , Figure 5 shown. A liquid connection pipe orifice (14) is provided on one side of the positioning stop groove (15). The liquid storage tank (9) and the static levels to be calibrated (19) in each static level positioning groove (3) are connected through the liquid connection pipe (10), so that when the liquid level of the liquid storage tank (9) changes, the liquid level in the static levels to be calibrated (19) can change accordingly. A signal connection port (17) is provided on the other side of the positioning stop groove (15), which is connected to the sensor in the static level to be calibrated (19) to obtain information on the change of its liquid level.

[0021] The calibration table (1) is provided with a control display screen (4), a liquid level display screen (5), and control buttons (6). The control display screen (4) is electrically connected to the liquid level control console (7), which is an existing technology. Pulse values and working modes are set to control the operation of the motor (12), driving the ball screw (11) to rotate and driving the liquid storage tank (9) fixed on it to rise, stop, and descend uniformly in the vertical direction, and controlling the rise and fall of the liquid level of the static levels to be calibrated (19) on the calibration table (1) through the liquid connection pipe (10). There are a total of 4 control buttons (6), which are the "switch", "start", "pause", and "emergency stop" buttons from left to right, and cooperate with the control display screen (4) to control the working state of the liquid level control console (7). The liquid level display screen (5) is used to indicate the liquid level height of the liquid storage tank (9).

[0022] The liquid level control console (7) is provided with a lead screw module (8), a liquid storage tank (9) and a liquid connecting pipe (10). The lead screw module (8) belongs to the prior art and the model used is 1605, which includes a ball screw (11) and a motor (12), and is assembled and fixed on the liquid level control console (7) through screw nuts. The motor (12) is controlled by the control display screen (4) and the control button (6) on the calibration table (1); when the motor (12) receives the pulse value given by the control display screen (4), it controls the rotation of the ball screw (11). For every one turn of the ball screw (11), the vertical movement distance of the liquid storage tank (9) assembled and fixed thereon by screw nuts is , then the ball screw (11) is driven to rotate circles, and the vertical movement distance of the liquid storage tank (9) is: , and this distance can be displayed on the liquid level display screen (5).

[0023] The inner diameter of the liquid storage tank (9) is , then relative to the starting position, after the liquid storage tank (9) vertically moves a distance , the liquid movement volume is: .

[0024] Each time static level gauges (19) are calibrated, the inner diameter of the static level gauges (19) is , then the liquid level change amount of each static level gauge (19) is: .

[0025] The change amount can be collected and summarized through the signal connection port (17) to realize the calibration of the static level gauges (19).

[0026] The present utility model proposes an automatic calibration device applicable to static level gauges. By driving the ball screw to rotate according to the setting by a motor, the liquid storage tank fixed on the ball screw is driven to move up and down uniformly in the vertical direction, changing the liquid level position, which can reduce the liquid level shaking, and reduce the volume and weight of the device, facilitating handling; the calibration table is provided with a plurality of positioning grooves, and the liquid storage tank and the static level gauges to be calibrated can be interconnected, supporting the calibration of multiple static level gauges at one time, and can be quickly installed and disassembled, improving the calibration efficiency.

Claims

1. An automatic calibration device suitable for a static level, characterized in that: The device is composed of a calibration platform (1) and a liquid level control console (7) and is used to detect the accuracy and stability of a static level. The calibration platform (1) is provided with a static level positioning groove (3), and a static level (19) to be calibrated is fixed by means of a positioning retaining groove (15) whose shape and size match those of a static level base (20), a positioning hole (16) and a buckle (13). A liquid connecting pipe opening (14) is provided on one side of the positioning retaining groove (15), and each static level (19) to be calibrated is connected to a liquid storage tank (9) on the liquid level control console (7) through a liquid connecting pipe (10), so that when the liquid level of the liquid storage tank (9) changes, the liquid surface in the static level (19) to be calibrated can change accordingly. A liquid connecting pipe (14) is provided on the other side of the positioning retaining groove (15). The signal connection port (17) is connected to a sensor in the static level (19) to be calibrated to obtain information on changes in the liquid level; the liquid level control console (7) is provided with a screw module (8) and a liquid storage tank (9); the screw module (8) includes a ball screw (11) and a motor (12); the motor (12) is controlled in its working state by a control display screen (4) and a control button (6) on the calibration platform (1), drives the ball screw (11) to rotate, drives the liquid storage tank (9) fixed on the ball screw (11) to rise and fall at a uniform speed in the vertical direction, and controls the rise and fall of the liquid level of the static level (19) to be calibrated on the calibration platform (1) through a liquid connection pipe (10); the liquid level display screen (5) indicates the liquid level height of the liquid storage tank (9).

2. The automatic calibration device for a static level according to claim 1, characterized in that: The calibration platform (1) comprises: a static level positioning groove (3), a control display screen (4), a liquid level display screen (5), and a control button (6).

3. The automatic calibration device for a static level according to claim 1, characterized in that: The static level positioning groove (3) comprises: a buckle (13), a liquid connection pipe port (14), a positioning retaining groove (15), a positioning hole (16), and a signal connection port (17).

4. The automatic calibration device for a static level according to claim 1, characterized in that: The liquid level control console (7) comprises: a screw module (8), a liquid storage tank (9), and a liquid connecting pipe (10).

5. The automatic calibration device for a static level according to claim 1, characterized in that: The screw module (8) comprises a ball screw (11) and a motor (12).

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