A monitoring system and a monitoring method for the inclination of a gas holder piston

Abstract

The application provides a kind of gas cabinet piston inclination monitoring system and monitoring method, piston has circular upper surface, the gas cabinet piston inclination monitoring system includes: height measuring device and control terminal;N monitoring points are preset on the upper surface, wherein N is even number greater than 2, the number of height measuring device is N, and is one-to-one corresponding setting in N monitoring points;Height measuring device includes the cylinder body containing liquid, support and liquid level sensor, cylinder body is fixedly connected on its corresponding monitoring point by support, liquid level sensor is arranged on cylinder body, and is electrically connected with control terminal;Liquid level sensor acquires liquid level information in cylinder body in real time, and the information is sent to control terminal, and control terminal judges the inclination of piston according to the liquid level information in the N cylinder bodies of the N height acquisition devices received.The application not only can reduce labor cost, but also has the advantages of high measurement accuracy, thereby ensuring the safe operation of gas cabinet.

Description

Technical Field

[0001] This invention relates to the field of gas holder measurement technology, and in particular to a monitoring system and method for monitoring the tilt of the gas holder piston. Background Technology

[0002] Large gas holders are essential process equipment in industrial and daily life, used for storing various types of fuel gases. The piston tilt during gas holder operation is a crucial safety parameter. Analysis of numerous gas holder production safety accidents shows that most accidents were related to piston tilt exceeding safe limits. To ensure safe gas holder operation, real-time monitoring of piston tilt during operation is necessary. Current technologies mostly rely on manual measurement to determine piston tilt, which suffers from low measurement accuracy, poor safety, and high labor intensity. Summary of the Invention

[0003] The purpose of this invention is to provide a monitoring system and method for monitoring the tilt of the gas holder piston, which not only reduces labor costs but also has the advantages of high measurement accuracy, thereby ensuring the safe operation of the gas holder.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0005] A system for monitoring the tilt of a gas holder piston, wherein the piston has a circular upper surface, the system comprising: a height measuring device and a control terminal;

[0006] N monitoring points are preset on the upper surface, where N is an even number greater than 2. The number of height measuring devices is N, and they are set one-to-one on the N monitoring points.

[0007] The height measuring device includes a cylinder filled with liquid, a support, and a liquid level sensor. The cylinder is fixedly connected to its corresponding monitoring point via the support. The liquid level sensor is installed on the cylinder and electrically connected to the control terminal.

[0008] The liquid level sensor collects the liquid level information inside the cylinder in real time and sends the information to the control terminal. The control terminal determines the tilt amount of the piston based on the N liquid level information inside the cylinder received from the N height acquisition devices.

[0009] Preferably, the connecting pipe is located below the cylinder, and the bottom of the cylinder is connected to the connecting pipe through the valve. There are N valves, each corresponding to one of the N cylinders.

[0010] Preferably, the height measuring device further includes a liquid level display tube, an upper connecting tube, and a lower connecting tube;

[0011] The inner cavity shape axis of the cylinder extends in the vertical direction, the liquid level display pipe is made of transparent material, and the upper end of the liquid level display pipe is communicated with the cylinder through the upper connecting pipe, and the lower end is communicated with the cylinder through the lower connecting pipe, and the liquid level in the cylinder is located between the upper connecting pipe and the lower connecting pipe in the vertical direction.

[0012] Preferably, the bracket comprises a bottom plate, an adjusting mechanism and a mounting plate.

[0013] The bottom plate is fixedly connected to the upper surface, and the mounting plate is horizontally arranged above the bottom plate and connected to the bottom plate through the adjusting mechanism, and the cylinder is fixed to the upper surface of the mounting plate.

[0014] Preferably, the adjusting mechanism comprises a screw rod, an upper nut and a lower nut, and the upper nut and the lower nut are matched with the screw rod.

[0015] The screw rod is vertically arranged, with a bottom end fixedly connected to the floor and a top end in a free state, a through hole is arranged on the mounting plate, the mounting plate is sleeved on the screw rod through the through hole, the upper nut and the lower nut are both threadedly connected to the screw rod and located above and below the mounting plate respectively to clamp the mounting plate.

[0016] Preferably, the number of screw rods is at least two, the number of upper nuts is equal to the number of screw rods and corresponds one-to-one, the number of lower nuts is equal to the number of screw rods and corresponds one-to-one, and the number of through holes is equal to the number of screw rods and corresponds one-to-one.

[0017] Preferably, the bracket further comprises a level measuring device.

[0018] The level measuring device is arranged on the mounting plate to detect the level of the mounting plate.

[0019] A gas cabinet piston inclination monitoring method using any one of the above gas cabinet piston inclination monitoring systems;

[0020] The method comprises the steps of S100, presetting N monitoring points in a circular array with the midpoint of the upper surface as the center on the upper surface of the piston;

[0021] S200, one-to-one corresponding N height measuring devices are arranged on N monitoring points;

[0022] S300, N liquid level height values in N cylinders are collected by N liquid level sensors and sent to a control terminal;

[0023] S400, the control terminal calculates the tilt amount Y of the upper surface based on the liquid level height values ​​in the N cylinders.

[0024] Preferably, step S400 includes the following steps:

[0025] Step S410: Sort the liquid level height values ​​in the N cylinders from largest to smallest as H1, H2, H3...HN, where the monitoring point corresponding to H1 is the first point, the monitoring point corresponding to H2 is the second point, the monitoring point corresponding to H3 is the third point, ..., the monitoring point corresponding to HN is the Nth point;

[0026] S420. Calculate according to the formula Y=(H1-H2) / COSα–(COS(45°-α)), where α is the azimuth angle.

[0027] Preferably, in step S420, the azimuth angle α is calculated according to the formula (H1-H2) / [COSα-COS(45°-α)]=(H2-H3) / [COS(45°-α)-COS(45°+α)].

[0028] The gas holder piston tilt monitoring system of the present invention uses the liquid level sensor to collect the liquid level height information in the cylinder in real time and sends the information to the control terminal. The control terminal determines the tilt of the piston based on the N liquid level height information in the cylinder received from the N height acquisition devices. This technical solution not only reduces labor costs but also has the advantages of high measurement accuracy, thereby ensuring the safe operation of the gas holder. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the gas holder piston tilt monitoring system in Example 1;

[0030] Figure 2 for Figure 1 Schematic diagram of the height measuring device in the middle;

[0031] Figure 3 This is a schematic diagram of the method for monitoring the tilt of the gas holder piston in Example 2.

[0032] In the diagram: 1-Piston; 2-Upper surface; 3-Height measuring device; 4-Control terminal; 5-Cylinder; 6-Bracket; 7-Liquid level sensor; 8-Liquid; 9-Connecting pipe; 10-Valve; 11-Liquid level display pipe; 12-Upper connecting pipe; 13-Lower connecting pipe; 14-Base plate; 15-Adjusting mechanism; 16-Mounting plate; 17-Screw; 18-Upper nut; 19-Lower nut; 20-Levelness measuring device. Detailed Implementation

[0033] In order to make the purpose, technical scheme and advantages of the present application more clear, the gas tank piston deformation monitoring system and the monitoring method of the present application 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.

[0034] Example one

[0035] As shown in Figure 1 , 2 , a gas tank piston inclination monitoring system, the piston 1 has a circular upper surface 2, the gas tank piston inclination monitoring system comprises: height measuring device 3 and control terminal 4. N monitoring points are preset on the upper surface 2, where N is an even number greater than 2, and the number of height measuring device 3 is N, which is set one by one on the N monitoring points. Height measuring device 3 includes a cylinder 5 containing liquid 8, a bracket 6 and a liquid level sensor 7, the cylinder 5 is fixedly connected to the corresponding monitoring point through the bracket 6, and the liquid level sensor 7 is arranged on the cylinder 5 and electrically connected with the control terminal 4. The liquid level sensor 7 collects the liquid level information in the cylinder 5 in real time and sends the information to the control terminal 4, and the control terminal 4 judges the inclination of the piston 1 according to the liquid level information in the N cylinders 5 of the N height measuring devices. The technical scheme can automatically monitor the height information of N monitoring points in real time, has high measurement accuracy, and can accurately judge the inclination of the piston 1, thereby ensuring the safe operation of the gas tank.

[0036] Specifically, as shown in Figure 2 , the bracket 6 comprises a bottom plate 14, an adjusting mechanism 15 and a mounting plate 16. The bottom plate 14 is fixedly connected to the upper surface 2, the mounting plate 16 is horizontally arranged above the bottom plate 14 and connected to the bottom plate 14 through the adjusting mechanism 15, and the cylinder 5 is fixed to the upper surface 2 of the mounting plate 16. The technical scheme can ensure the stability of the cylinder 5 installed on the upper surface 2, thereby ensuring the smooth progress of the monitoring work.

[0037] Further, as shown in Figure 2As shown, the adjusting mechanism 15 includes a screw 17, an upper nut 18, and a lower nut 19, both of which are matched with the screw 17. The screw 17 is vertically arranged, with its bottom end fixed to the floor and its top end in a free state. A through hole is provided on the mounting plate 16, through which the mounting plate 16 is fitted onto the screw 17. The upper nut 18 and lower nut 19 are threaded onto the screw 17 and are located above and below the mounting plate 16, respectively, to clamp the mounting plate 16. In actual manufacturing, there are at least two screws 17, the number of upper nuts 18 is equal to the number of screws 17 and corresponds one-to-one, the number of lower nuts 19 is equal to the number of screws 17 and corresponds one-to-one, and the number of through holes is equal to the number of screws 17 and corresponds one-to-one. This allows the levelness of the mounting plate 16 to be adjusted using at least two sets of upper nuts 18 and lower nuts 19. Preferably, as... Figure 1 As shown, the bracket 6 also includes a levelness measuring device 20. The levelness measuring device 20 is disposed on the mounting plate 16 and is used to detect the levelness of the mounting plate 16.

[0038] As one possible implementation method, such as Figure 1 As shown, the connecting pipe 9 is located below the cylinder 5. The bottom of the cylinder 5 is connected to the connecting pipe 9 via valves 10. There are N valves 10, each corresponding to one of the N cylinders 5. In this way, the N cylinders 5 can be interconnected through the connecting pipe 9, ensuring that the liquid level in each cylinder 5 is the same in the initial state. When in use, all N valves 10 are closed to separate the cylinders 5 during operation.

[0039] As one possible implementation method, such as Figure 2 As shown, the height measuring device 3 also includes a liquid level display tube 11, an upper connecting tube 12, and a lower connecting tube 13. The inner cavity of the cylinder 5 is cylindrical with its axis extending vertically. The liquid level display tube 11 is made of transparent material, and its upper end is connected to the cylinder 5 via the upper connecting tube 12, and its lower end is connected to the cylinder 5 via the lower connecting tube 13. Vertically, the liquid level inside the cylinder 5 is located between the upper connecting tube 12 and the lower connecting tube 13. This allows operators to observe the liquid level in the cylinder 5 through the liquid level display tube 11 to determine whether the amount of liquid inside the cylinder 5 is sufficient.

[0040] Example 2

[0041] like Figure 3 As shown, a method for monitoring the tilt of a gas holder piston is used, employing the gas holder piston tilt monitoring system described in Example 1.

[0042] Including step S100, setting N monitoring points in a circular array with the midpoint of the upper surface of the piston as the center;

[0043] S200, one-to-one correspondence of N height measuring devices is arranged on N monitoring points;

[0044] S300, the liquid level height values in the N cylinder bodies are collected by the N liquid level sensors and sent to the control terminal;

[0045] S400, the control terminal calculates the inclination Y of the upper surface according to the liquid level height values in the N cylinder bodies.

[0046] The inclination Y mentioned here refers to the maximum displacement of the point on the edge of the upper surface from the original position (i.e. the piston does not deviate) in the vertical direction when the piston deviates.

[0047] Specifically, step S400 includes the following steps:

[0048] Step S410, the liquid level height values in the N cylinder bodies are sorted from large to small, respectively H1, H2, H3…HN, wherein the first point corresponds to the monitoring point of H1, the second point corresponds to the monitoring point of H2, the third point corresponds to the monitoring point of H3, and the Nth point corresponds to the Nth point of HN.

[0049] S420, according to the formula Y=(H1-H2) / COSα-(COS(45°-α)) calculation, wherein α is the azimuth angle.

[0050] Since H1, H2, H3…HN are arranged from large to small, that is, H1>H2>H3>…>HN. When the piston deviates, the upper surface has a highest point and a lowest point in the vertical direction, and the line L1 connecting the highest point and the lowest point is set, and the line L2 connecting the first monitoring point and the Nth monitoring point is set, then the azimuth angle α is the angle between the straight line L1 and the straight line L2 (not greater than 90°), it needs to be explained that the intersection point of the straight line L1 and the straight line L2 is the center of the upper surface. In step S420, according to the formula (H1-H2) / [COSα-COS(45°-α)]=(H2-H3) / [COS(45°-α)-COS(45°+α)], the azimuth angle α is calculated. The above formula is derived by the inventor through in-depth research and deduction, and the inclination Y can be accurately calculated according to the specific values of H1, H2, H3 in this way.

[0051] The above embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it cannot be understood as limiting the scope of the present application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which belong to the protection scope of the present application. Therefore, the protection scope of the present application patent should be subject to the appended claims.

Claims

1. A system for monitoring the inclination of a gas holder piston, the piston (1) having a circular upper surface (2), Characterized in that: It comprises height measuring devices (3) and control terminals (4); N monitoring points are preset on the upper surface (2), where N is an even number greater than 2, and the number of height measuring devices (3) is N, which are correspondingly arranged on the N monitoring points; The height measuring device (3) comprises a cylinder (5) containing liquid (8), a bracket (6) and a liquid level sensor (7), the cylinder (5) is fixedly connected to the corresponding monitoring point through the bracket (6), and the liquid level sensor (7) is arranged on the cylinder (5) and electrically connected with the control terminal (4); The liquid level sensor (7) collects the liquid level information in the cylinder (5) in real time and sends it to the control terminal (4), and the control terminal (4) judges the inclination of the piston (1) according to the liquid level information in the N cylinders (5) of the N height measuring devices; The bracket (6) comprises a bottom plate (14), an adjusting mechanism (15), a mounting plate (16) and a level measuring device (20); The bottom plate (14) is fixedly connected to the upper surface (2), the mounting plate (16) is horizontally arranged above the bottom plate (14) and connected to the bottom plate (14) through the adjusting mechanism (15), and the cylinder (5) is fixed to the upper surface of the mounting plate (16); The adjusting mechanism (15) comprises a screw rod (17), an upper nut (18) and a lower nut (19), and the upper nut (18) and the lower nut (19) are matched with the screw rod (17); The screw rod (17) is vertically arranged, with the bottom end fixedly connected to the bottom plate (14) and the top end in a free state, a through hole is arranged on the mounting plate (16), the mounting plate (16) is sleeved on the screw rod (17) through the through hole, and the upper nut (18) and the lower nut (19) are threadedly connected to the screw rod (17) and located above and below the mounting plate (16) respectively to clamp the mounting plate (16); The level measuring device (20) is arranged on the mounting plate (16) to detect the level of the mounting plate (16).

2. The gas cabinet piston inclination monitoring system according to claim 1, characterized in that: It further comprises a communication pipe (9) and a valve (10); The communication pipe (9) is located below the cylinder (5), the bottom of the cylinder (5) is communicated with the communication pipe (9) through the valve (10), and the number of valves (10) is N, which are correspondingly arranged with the N cylinders (5).

3. The gas cabinet piston inclination monitoring system according to claim 1, characterized in that: The height measuring device (3) further comprises a liquid level display pipe (11), an upper connecting pipe (12) and a lower connecting pipe (13). The inner cavity shape axis of the cylinder (5) extends in the vertical direction, the liquid level display tube (11) is made of transparent material, and the upper end of the liquid level display tube (11) is communicated with the cylinder (5) through the upper connecting pipe (12), and the lower end is communicated with the cylinder (5) through the lower connecting pipe (13), and in the vertical direction, the liquid level in the cylinder (5) is located between the upper connecting pipe (12) and the lower connecting pipe (13).

4. The gas cabinet piston tilt amount monitoring system of claim 1, wherein: The number of the screw rods (17) is at least two, the number of the upper nuts (18) is equal to the number of the screw rods (17) and one-to-one correspondence, the number of the lower nuts (19) is equal to the number of the screw rods (17) and one-to-one correspondence, and the number of the through holes is equal to the number of the screw rods (17) and one-to-one correspondence.

5. A gas cabinet piston tilt amount monitoring method, characterized in that: The gas cabinet piston tilt amount monitoring system of any one of claims 1 to 4 is used; Step S100, N monitoring points are arranged in a circular array with the midpoint of the upper surface as the center on the upper surface of the piston; S200, N height measuring devices are arranged one-to-one on N monitoring points; S300, the liquid level height values in N cylinders are collected by N liquid level sensors and sent to the control terminal; S400, the control terminal calculates the tilt amount Y of the upper surface according to the liquid level height values in N cylinders.

6. The gas cabinet piston tilt amount monitoring method of claim 5, wherein: In step S400, the following steps are included: Step S410, sort the liquid level height values in N cylinders from large to small, respectively H1, H2, H3…HN, wherein the monitoring point corresponding to H1 is the first point, the monitoring point corresponding to H2 is the second point, the monitoring point corresponding to H3 is the third point, and so on, and the monitoring point corresponding to HN is the Nth point. S420, according to the formula Y=(H1-H2) / COSα–(COS(45°-α)), wherein α is the azimuth angle.

7. The gas cabinet piston tilt amount monitoring method of claim 6, wherein: In step S420, according to the formula (H1-H2) / [COSα-COS(45°-α)]= (H2-H3) / [COS(45°-α)-COS(45°+α)], the azimuth angle α is calculated.

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