A gas holder piston deformation monitoring system and a monitoring method

Abstract

The application provides a kind of gas cabinet piston deformation quantity monitoring system and monitoring method of gas cabinet, piston has circular upper surface, the gas cabinet piston deformation quantity monitoring system includes: height acquisition device and control terminal;N monitoring points are preset on the upper surface, wherein N is an integer greater than 1, the number of height acquisition device is N, and is one-to-one corresponding setting on N monitoring points;N height acquisition devices are electrically connected with the control terminal, to collect the height value of N monitoring points in the vertical direction in real time, and send it to the control terminal, the control terminal judges whether the piston is deformed according to the height value of N monitoring points.It can monitor the deformation of the piston during the operation of the gas cabinet, and thus ensures the safe operation of the gas cabinet.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of gas tank measurement, in particular to a gas tank piston deformation monitoring system and method. BACKGROUND

[0002] The gas tank is a major hazard source of industrial enterprises. In order to ensure the safe operation of the gas tank during production, it is necessary to monitor the running state of the gas tank piston in real time. When monitoring the running of the gas tank piston, it is found that there is another variable in the tilt amount, which causes the tilt amount to deviate during data calculation and fitting. This variable is the deformation variable. It is caused by the material, structure and construction process of the piston. If the deformation variable of the gas tank piston exceeds the allowable value, it will cause damage to the sealing system of the gas tank, causing toxic and harmful gas leakage, thereby causing atmospheric pollution of the surrounding environment, poisoning of personnel by toxic and harmful gas, and explosion of the gas tank and other major safety accidents.

[0003] At present, there is no related technology for monitoring the deformation of the piston during the operation of the gas tank in the prior art. This can easily cause the piston to deform during the operation of the gas tank, affecting the safe operation of the gas tank, and there is a certain safety hazard. SUMMARY

[0004] The purpose of the present application is to provide a gas tank piston deformation monitoring system and method, which can monitor the deformation of the piston during the operation of the gas tank, thereby ensuring the safe operation of the gas tank.

[0005] To achieve the above purpose, the technical solution adopted by the present application is:

[0006] A gas tank piston deformation monitoring system, the piston has a circular upper surface, the gas tank piston deformation monitoring system comprises: a height acquisition device and a control terminal;

[0007] N monitoring points are preset on the upper surface, where N is an integer greater than 1, the number of height acquisition devices is N, and each height acquisition device is arranged at one of the N monitoring points;

[0008] The N height acquisition devices are electrically connected to the control terminal, for real-time acquisition of the height values of the N monitoring points in the vertical direction, and sending the height values to the control terminal, and the control terminal judges whether the piston deforms according to the height values of the N monitoring points.

[0009] Preferably, the N monitoring points are evenly arranged on the edge of the upper surface, and / or the upper surface is in an inclined state with the straight line L as the tilt axis.

[0010] Preferably, the height collection device comprises a measuring cylinder containing liquid and a liquid level sensor;

[0011] The measuring cylinder is fixedly connected to the corresponding monitoring point, and the liquid level sensor is arranged on the measuring cylinder and electrically connected to the control terminal.

[0012] The liquid level sensor detects the liquid level information in the measuring cylinder in real time and sends the information to the control terminal.

[0013] A gas holder piston deformation monitoring method using the gas holder piston deformation monitoring system of any of the above technical features;

[0014] The method comprises the steps of S100, collecting the height values of N monitoring points in the vertical direction by N height collection devices, and sending the height values to the control terminal;

[0015] S200, the control terminal determines whether the piston is deformed according to the height values of the N monitoring points in the vertical direction.

[0016] Preferably, step S200 comprises the following steps:

[0017] S210, determining whether the height values of the N monitoring points in the vertical direction are abnormal according to the positional arrangement relationship of the N monitoring points, if yes, determining that the monitoring point is deformed, and if no, entering step S220;

[0018] S220, selecting two monitoring points and calculating the actual inclination K between the two points in the vertical direction, if K>0.0009, determining that the piston is deformed between the two monitoring points, and if K≤0.0009, determining that the piston is not deformed between the two monitoring points.

[0019] Preferably, the upper surface is in an inclined state with the straight line L as the inclination axis.

[0020] In step S220, the two selected monitoring points are A point and B point, K=(Y A -Y B ) / (X A -X B ), wherein Y A is the height value of A point in the vertical direction, Y B is the height value of B point in the vertical direction, X A is the distance between A point and the straight line L in the vertical projection, and X B is the distance between B point and the straight line L in the vertical projection.

[0021] Preferably, N monitoring points are evenly arranged on the edge of the upper surface, the included angle between the upper surface and the horizontal plane is α, and the radius of the upper surface is r.

[0022] The N monitoring points include a first point, a second point,..., and an Nth point arranged in sequence along the edge of the upper surface, and the first point has the maximum height value in the vertical direction.

[0023] Wherein N is divisible by 360, and the incremental angle b = 360° / n.

[0024] The distance X between each monitoring point and the straight line L in the vertical projection is r x cos ((s+u) x b+w x a), wherein s is the quotient of (n-1) / 2, u is the remainder of (n-1) / 2, n is the serial number of the monitoring point, w = 1 when n is odd, and w = -1 when n is even.

[0025] Preferably, after step S220, the method further comprises the following steps:

[0026] S230, taking the A point as the reference point, calculating the standard height Y of the B point in the vertical direction, and comparing it with the measured height Y of the B point in the vertical direction. B The deformation between the A point and the B point is obtained by comparison.

[0027] Preferably, the calculation formula of the standard height Y of the B point in the vertical direction is:

[0028] 0.0009 = (Y A -Y) / (X A -X B ), wherein Y A is the height value of the A point in the vertical direction, X A is the distance between the A point and the straight line L in the vertical projection, and X B is the distance between the B point and the straight line L in the vertical projection.

[0029] Preferably, in step S220, the tolerance of the actual inclination K is ±0.0001.

[0030] The monitoring system for the deformation of the gas cabinet piston of the application comprises N height acquisition devices and a control terminal, the N height acquisition devices are electrically connected with the control terminal, are used to acquire the height values of N monitoring points in the vertical direction in real time, and send the height values to the control terminal. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 Structure diagram of the monitoring system of the deformation amount of the gas tank piston in Example One;

[0032] Figure 2 Flowchart of the monitoring method of the deformation amount of the gas tank piston in Example Two.

[0033] In the figure: 1-piston; 2-upper surface; 3-height acquisition device; 4-control terminal; 5-measuring cylinder; 6-liquid level sensor. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solutions and advantages of the present application more clear, the monitoring system of the gas tank and the measurement method of the operating parameters of the gas tank are further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application and do not limit the present application.

[0035] Example One

[0036] As shown in Figure 1 A monitoring system of the deformation amount of the gas tank piston, the piston 1 has a circular upper surface 2, the monitoring system of the deformation amount of the gas tank piston comprises: a height acquisition device 3 and a control terminal 4. N monitoring points are preset on the upper surface 2, where N is an integer greater than 1, and the number of height acquisition devices 3 is N, which are correspondingly arranged on the N monitoring points. The N height acquisition devices 3 are electrically connected with the control terminal 4, for real-time acquisition of the height values of the N monitoring points in the vertical direction, and sending them to the control terminal 4, and the control terminal 4 judges whether the piston 1 is deformed according to the height values of the N monitoring points. With such a technical solution, the deformation amount of the piston can be monitored during the operation of the gas tank, thereby ensuring the safe operation of the gas tank

[0037] In actual work, as shown in the figure, the N monitoring points are evenly arranged on the edge of the upper surface 2, and / or the upper surface 2 is in an inclined state with the straight line L as the inclined axis.

[0038] Specifically, the height acquisition device 3 comprises a measuring cylinder 5 containing liquid inside and a liquid level sensor 6. The measuring cylinder 5 is fixedly connected to the corresponding monitoring point, and the liquid level sensor 6 is arranged on the measuring cylinder 5 and electrically connected with the control terminal 4. The liquid level sensor 6 detects the liquid level information in the measuring cylinder 5 in real time and sends the information to the control terminal 4. In this way, the control terminal 4 can calculate the actual height of the monitoring point corresponding to the measuring cylinder 5 according to the liquid level information in the measuring cylinder 5.

[0039] Example Two

[0040] A kind of gas cabinet piston deformation amount monitoring method, using the gas cabinet piston deformation amount monitoring system described in example one. As Figure 2 Shown, including steps S100, the height value of N monitoring points in vertical direction is collected by N height acquisition device, and it is sent to control terminal;S200, control terminal judges whether the piston appears deformation according to the height value of N monitoring points of marker in vertical direction.In actual work, when the piston does not occur deformation, when the upper surface of piston occurs inclination, the height value of N monitoring points will appear certain change with the inclination of the upper surface of piston, and the height variation law of each monitoring point can be obtained directly according to the arrangement of each monitoring point and the inclination direction of the upper surface of piston by operator.

[0041] Specifically, in step S200, including steps:

[0042] S210, according to the position arrangement relationship of N monitoring points, judge whether the height value of each monitoring point in vertical direction is abnormal, if yes, then judge that the monitoring point appears deformation, if not, then enter step S220;

[0043] S220, select two monitoring points, and calculate the actual inclination rate K between the two points according to the height in vertical direction, if K>0.0009, then judge that the piston appears deformation between the two monitoring points, if K≤0.0009, then judge that the piston does not appear deformation between the two monitoring points.It needs to be explained that in step S220, the tolerance of actual inclination rate K is ±0.0001, that is to say, in actual work, when K>0.001, it can be determined that the deformation amount between two monitoring points exceeds the normal range, or K≤0.0008, it can be determined that the deformation amount between two monitoring points does not exceed the normal range

[0044] When the upper surface is in the inclined state with straight line L as the inclination axis, in step S220, suppose that the two selected monitoring points are A point and B point, K=(Y A -Y B ) / (X A -X B ), wherein Y A is the height value of A point in vertical direction, Y B is the height value of B point in vertical direction, X A is the distance between A point and straight line L on the projection in vertical direction, X BThe distance between the B point and the straight line L in the vertical direction projection. In actual work, the N monitoring points are evenly arranged on the edge of the upper surface, the included angle between the upper surface and the horizontal plane is α, and the radius of the upper surface is r. It is assumed that the N monitoring points include a first point, a second point, …, and an Nth point arranged in turn along the edge of the upper surface, and the height value of the first point in the vertical direction is the largest. Wherein N can be divided by 360, the incremental angle b = 360° / n. The distance X between each monitoring point and the straight line L in the vertical direction projection is X = r x cos ((s + u) x b + w x a), wherein s is the quotient of (n-1) / 2, u is the remainder of (n-1) / 2, and n is the serial number of the monitoring point. When n is odd, w = 1, and when n is even, w = -1.

[0045] As an implementable manner, after step S220, there is still a step: S230, taking the A point as the reference point, calculating the standard height Y of the B point in the vertical direction, and comparing it with the measured height Y of the B point in the vertical direction. B In contrast, the deformation amount between the A point and the B point is obtained. Wherein the calculation formula of the standard height Y of the B point in the vertical direction is: 0.0009 = (Y A -Y) / (X A -X B ), wherein Y A is the height value of the A point in the vertical direction, X A is the distance between the A point and the straight line L in the vertical direction projection, and X B is the distance between the B point and the straight line L in the vertical direction projection.

[0046] The above-described embodiments only express several embodiments of the present application, which are described in detail and specifically, but should not be understood as limiting the scope of the patent of the present application. It should be noted that for ordinary skilled in the art, without departing from the concept of the present application, several modifications and improvements can be made, which are all within the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A system for monitoring the deformation of a gas holder piston, wherein the piston (1) has a circular upper surface (2), characterized in that: include: Altitude acquisition device (3) and control terminal (4); N monitoring points are preset on the upper surface (2), where N is an integer greater than 1. The number of height acquisition devices (3) is N, and they are set one by one on the N monitoring points. The N height acquisition devices (3) are all electrically connected to the control terminal (4) to collect the height values ​​of the N monitoring points in the vertical direction in real time and send them to the control terminal (4). The control terminal (4) makes a judgment on whether the piston (1) is deformed based on the height values ​​of the N monitoring points. The N monitoring points are evenly distributed on the edge of the upper surface, the angle between the upper surface and the horizontal plane is α, and the radius of the upper surface is r. Suppose there are N monitoring points, including the first point, the second point, ..., the Nth point, which are arranged sequentially along the edge of the upper surface, and the first point has the largest height value in the vertical direction; Where N is divisible by 360, and the increment angle b = 360° / n; The distance X between each monitoring point and the line L on the vertical projection is X = r × cos((s + u) × b + w × a), where s is the quotient of (n-1) / 2, u is the remainder of (n-1) / 2, and n is the serial number of the monitoring point. When n is odd, w = 1, and when n is even, w = -1. Among them, N monitoring points are evenly distributed on the edge of the upper surface (2), and / or the upper surface (2) is inclined with the straight line L as the inclined axis; Furthermore, the height acquisition device (3) includes a measuring cylinder (5) filled with liquid and a liquid level sensor (6). The measuring cylinder (5) is fixedly connected to the corresponding monitoring point, and the liquid level sensor (6) is installed on the measuring cylinder (5) and electrically connected to the control terminal (4); The liquid level sensor (6) detects the liquid level height information in the measuring cylinder (5) in real time and sends the information to the control terminal (4). The monitoring system operation includes step S100: collecting the vertical height values ​​of N monitoring points through N height acquisition devices and sending them to the control terminal; S200: The control terminal determines whether the piston is deformed based on the vertical height values ​​of the N monitoring points of the marker. Step S200 includes the following steps: S210. Based on the positional arrangement of the N monitoring points, determine whether the vertical height value of each monitoring point is abnormal. If so, determine that the monitoring point is deformed; otherwise, proceed to step S220. S220. Select two monitoring points and calculate the actual inclination rate K between them based on their vertical height. If K > 0.0009, it is determined that the piston has deformed between the two monitoring points. If K ≤ 0.0009, it is determined that the piston has not deformed between the two monitoring points. The upper surface is inclined with the straight line L as the inclined axis; In step S220, let the two selected monitoring points be point A and point B, K=(Y A -Y B ) / (X A -X B ), where Y A Let Y be the vertical height of point A. B Let X be the vertical height of point B. A Let X be the distance between point A and line L projected in the vertical direction. B Let B be the distance between point B and line L on the vertical projection. N monitoring points are evenly distributed along the edge of the upper surface, the upper surface is at an angle of α with the horizontal plane, and the radius of the upper surface is r. Suppose there are N monitoring points, including the first point, the second point, ..., the Nth point, which are arranged sequentially along the edge of the upper surface, and the first point has the largest height value in the vertical direction; Where N is divisible by 360, and the increment angle b = 360° / n; The distance X between each monitoring point and the straight line L on the vertical projection is X = r × cos((s + u) × b + w × a), where s is the quotient of (n-1) / 2, u is the remainder of (n-1) / 2, and n is the serial number of the monitoring point. When n is odd, w = 1, and when n is even, w = -1.

2. A method for monitoring the deformation of a gas holder piston, characterized in that: Use the gas holder piston deformation monitoring system as described in claim 1; This includes step S100: collecting the vertical height values ​​of N monitoring points using N height acquisition devices and sending them to the control terminal; S200: The control terminal determines whether the piston is deformed based on the vertical height values ​​of the N monitoring points of the marker. Step S200 includes the following steps: S210. Based on the positional arrangement of the N monitoring points, determine whether the vertical height value of each monitoring point is abnormal. If so, determine that the monitoring point is deformed; otherwise, proceed to step S220. S220. Select two monitoring points and calculate the actual inclination rate K between them based on their vertical height. If K > 0.0009, it is determined that the piston has deformed between the two monitoring points. If K ≤ 0.0009, it is determined that the piston has not deformed between the two monitoring points. The upper surface is inclined with the straight line L as the inclined axis; In step S220, let the two selected monitoring points be point A and point B, K=(Y A -Y B ) / (X A -X B ), where Y A Let Y be the vertical height of point A. B Let X be the vertical height of point B. A Let X be the distance between point A and line L projected in the vertical direction. B Let B be the distance between point B and line L on the vertical projection. N monitoring points are evenly distributed along the edge of the upper surface, the upper surface is at an angle of α with the horizontal plane, and the radius of the upper surface is r. Suppose there are N monitoring points, including the first point, the second point, ..., the Nth point, which are arranged sequentially along the edge of the upper surface, and the first point has the largest height value in the vertical direction; Where N is divisible by 360, and the increment angle b = 360° / n; The distance X between each monitoring point and the straight line L on the vertical projection is X = r × cos((s + u) × b + w × a), where s is the quotient of (n-1) / 2, u is the remainder of (n-1) / 2, and n is the serial number of the monitoring point. When n is odd, w = 1, and when n is even, w = -1.

3. The method for monitoring the deformation of the gas holder piston according to claim 2, characterized in that: The step S220 is followed by the following step: S230. Using point A as the reference point, calculate the standard vertical height Y of point B, and compare it with the measured vertical height Y of point B. B By comparing the deformation at points A and B, the amount of deformation can be obtained.

4. The method for monitoring the deformation of the gas holder piston according to claim 3, characterized in that: The formula for calculating the standard vertical height Y of point B is: 0.0009=(Y A -Y) / (X A -X B ), where Y A Let X be the vertical height of point A. A Let X be the distance between point A and line L projected in the vertical direction. B Let L be the distance between point B and line L on the vertical projection.

5. The method for monitoring the deformation of the gas holder piston according to claim 3, characterized in that: In step S220, the tolerance of the actual inclination rate K is ±0.0001.

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