A control method and control system for gas lifting of storage tank vault

Abstract

The present invention discloses a control method for gas lifting of a storage tank vault and a control system thereof. The control method comprises: obtaining at least one static parameter and at least one dynamic parameter of the vault during the gas lifting process; calculating the stability of the vault during the gas lifting process according to the at least one static parameter and the at least one dynamic parameter; and controlling the gas lifting of the vault according to the stability. By executing the above steps, the control method for gas lifting of a storage tank vault can accurately measure various data during the gas lifting process of the vault, so as to improve the stability of the vault operation state and enhance the automation level of the gas lifting process of the storage tank vault.

Description

Technical Field

[0001] The invention relates to the technical field of monitoring gas lifting of storage tanks, and in particular to a control method for gas lifting of storage tank vaults, a control system for gas lifting of storage tank vaults and a computer-readable storage medium. Background Art

[0002] With the rapid development of my country's economy and urbanization, the demand for liquefied natural gas (LNG) has continued to rise. In recent years, a large number of LNG storage tanks have been built, and the demand will continue to expand in the future. As a key link in the construction of large LNG storage tanks, the safety and efficiency of the operation process of the dome gas lifting of large LNG storage tanks have become the key to the industry.

[0003] The gas lifting work of LNG storage tanks mainly uses the balance system, sealing system, power system, etc., relying on buoyancy and lifting force to smoothly lift the tank vault and aluminum ceiling to the vault (pressure ring installation elevation). This process is one of the most difficult, most complex and most risky engineering nodes in the installation and construction of large LNG storage tanks.

[0004] At present, most of the existing large-scale storage tank gas lifting is done by manual measurement and control, and a small number of them use automatic measurement systems, but none of them have achieved accurate measurement and control in this field. The current automatic measurement system has problems such as inaccurate distance measurement data, unstable wireless data transmission, data packet loss, and unfriendly system interface, which will further lead to the inability to ensure the stability of the vault lifting process, increasing the risk of lifting and the difficulty of command.

[0005] In order to solve the above problems existing in the prior art, the art urgently needs a control technology for the gas jacking of the tank vault, which can accurately measure various data during the gas jacking process of the vault to improve the stability of the vault operation state and enhance the automation level of the tank vault gas jacking process. Summary of the invention

[0006] A brief summary of one or more aspects is given below to provide a basic understanding of these aspects. This summary is not an exhaustive overview of all conceived aspects, and is neither intended to identify the key or decisive elements of all aspects nor to define the scope of any or all aspects. Its only purpose is to give some concepts of one or more aspects in a simplified form as a prelude to a more detailed description that will be given later.

[0007] In order to solve the above technical problems existing in the prior art, one aspect of the present invention provides a control method for gas lifting of a storage tank vault, comprising: obtaining at least one static parameter and at least one dynamic parameter of the vault during the gas lifting process; calculating the stability of the vault during the gas lifting process according to the at least one static parameter and the at least one dynamic parameter; and controlling the gas lifting of the vault according to the stability. The above-mentioned control method for gas lifting of a storage tank vault can accurately measure various data during the gas lifting process of the vault, so as to improve the stability of the vault operation state and enhance the automation level of the gas lifting process of the storage tank vault.

[0008] Optionally, in some embodiments, the at least one static parameter includes an offset and / or a height of the vault, and the at least one dynamic parameter includes a lifting speed of the vault.

[0009] Furthermore, the at least one static parameter also includes the positions of multiple distance measurement points on the edge of the arch surface of the arch, and the step of obtaining at least one static parameter and at least one dynamic parameter of the arch during the gas lifting process includes: determining the positions of the multiple distance measurement points of the arch; and determining the offset of the arch based on the positions of the multiple distance measurement points, wherein the offset includes the horizontal inclination.

[0010] Furthermore, the step of obtaining at least one static parameter and at least one dynamic parameter of the dome during the gas lifting process also includes: determining the height of the dome according to the positions of the multiple distance measurement points; and calculating the lifting speed of the dome according to the height.

[0011] Furthermore, the step of determining the height of the arch based on the multiple distance measurement points includes: obtaining the vertical distances from the top of the tank to the multiple distance measurement points of the arch by a first distance measuring device; calibrating the vertical distances of the multiple distance measurement points by a second distance measuring device to remove erroneous values; calculating the heights of the multiple distance measurement points of the arch based on the vertical distances of the multiple distance measurement points after calibration; and determining the height of the arch based on the heights of the multiple distance measurement points.

[0012] Optionally, in some embodiments, the step of calculating the smoothness of the dome during the gas lifting process based on the at least one static parameter and the at least one dynamic parameter includes: calculating the smoothness of the dome during the gas lifting process based on the offset, height and lifting speed of the dome.

[0013] Optionally, in some embodiments, the step of controlling the gas lifting of the vault according to the smoothness includes: determining whether the smoothness is within the range of standard smoothness; in response to the smoothness being within the range of standard smoothness, maintaining the current gas lifting state of the vault; and in response to the smoothness exceeding the range of standard smoothness, adjusting the lifting speed to improve the smoothness of the vault.

[0014] Furthermore, the step of adjusting the lifting speed to improve the stability of the arch includes: obtaining the fan current and fan voltage of the fan system, analyzing the working status of the generator and the fan; and adjusting the fan damper opening to adjust the lifting speed.

[0015] Optionally, further, the step of adjusting the lifting speed to improve the stability of the arch includes: obtaining the opening value of the gate; and adjusting the opening value of the gate to adjust the lifting speed.

[0016] In another aspect of the present invention, a control system for gas lifting of a storage tank vault is provided, comprising: a data measurement unit for obtaining at least one static parameter and at least one dynamic parameter of the vault during the gas lifting process; a data processing unit for calculating the stability of the vault during the gas lifting process according to the at least one static parameter and the at least one dynamic parameter; and an execution control unit for controlling the gas lifting of the vault according to the stability. By using the above control system to implement the control method provided in one aspect of the present invention, it is possible to accurately measure various data during the gas lifting process of the vault, so as to improve the stability of the vault operation state and enhance the automation level of the gas lifting process of the storage tank vault.

[0017] Optionally, in some embodiments, the control system further includes: a data transmission unit, used to transmit at least one static parameter, at least one dynamic parameter and video data of the gas lifting process of the vault during the gas lifting process to a data collection unit; and / or the data collection unit, used to receive and store at least one static parameter, at least one dynamic parameter and video data of the gas lifting process of the vault uploaded by the data measurement unit; and / or a data display unit, used to obtain and display at least one static parameter, at least one dynamic parameter and video of the gas lifting process of the vault during the gas lifting process from the data transmission unit and / or the data collection unit.

[0018] In addition, another aspect of the present invention further provides a computer-readable storage medium on which computer instructions are stored. When the computer instructions are executed by a processor, the above-mentioned control method for gas lifting of a storage tank vault provided in one aspect of the present invention is implemented. By implementing the above-mentioned control method for gas lifting of a storage tank vault, the computer-readable storage medium can accurately measure various data during the gas lifting process of the vault to improve the stability of the vault operation state and enhance the automation level of the gas lifting process of the storage tank vault. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above features and advantages of the present invention can be better understood after reading the detailed description of the embodiments of the present disclosure in conjunction with the following drawings. In the drawings, the components are not necessarily drawn to scale, and components with similar related properties or features may have the same or similar reference numerals.

[0020] Figure 1 A schematic structural diagram of a tank vault gas lift provided according to some embodiments of the present invention is shown;

[0021] Figure 2 A schematic structural diagram of a control system for gas lifting of a storage tank vault provided according to some embodiments of the present invention is shown;

[0022] Figure 3 A schematic flow chart showing a method for controlling gas lifting of a storage tank vault provided in accordance with some embodiments of the present invention; and

[0023] Figure 4 A schematic diagram of an on-site construction implementation process of a method for controlling gas lifting of a storage tank vault provided in accordance with some embodiments of the present invention is shown.

[0024] Reference numerals:

[0025] 110 vault;

[0026] 120 external walls;

[0027] H: top height;

[0028] h1 measured distance;

[0029] h2: Ascent height;

[0030] 200 Control system for gas lifting of tank vault;

[0031] 210 Data Measurement Unit;

[0032] 220 data transmission unit;

[0033] 230 Data Collection Unit;

[0034] 240 Data processing unit;

[0035] 250 execution control unit;

[0036] 260 Data Display Unit;

[0037] Steps S310~S330. DETAILED DESCRIPTION

[0038] The following specific embodiments illustrate the implementation of the present invention, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Although the description of the present invention will be introduced in conjunction with the preferred embodiment, this does not mean that the features of this invention are limited to this implementation. On the contrary, the purpose of introducing the invention in conjunction with the implementation is to cover other options or modifications that may be extended based on the claims of the present invention. In order to provide a deep understanding of the present invention, the following description will include many specific details. The present invention can also be implemented without using these details. In addition, in order to avoid confusion or blurring the focus of the present invention, some specific details will be omitted in the description.

[0039] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] In addition, the terms "upper", "lower", "left", "right", "top", "bottom", "horizontal" and "vertical" used in the following description should be understood as the directions shown in the paragraph and the related drawings. Such relative terms are only used for the convenience of description and do not mean that the device described therein must be manufactured or operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0041] It is understood that although the terms "first", "second", "third", etc. may be used herein to describe various components, regions, layers and / or parts, these components, regions, layers and / or parts should not be limited by these terms, and these terms are only used to distinguish different components, regions, layers and / or parts. Therefore, the first component, region, layer and / or part discussed below may be referred to as a second component, region, layer and / or part without departing from some embodiments of the present invention.

[0042] As mentioned above, currently, most of the existing large-scale storage tank gas lifting is done by manual measurement and control, and a small number of them use automatic measurement systems, but none of them have achieved accurate measurement and control in this field. The current automatic measurement system has problems such as inaccurate distance measurement data, unstable wireless data transmission, data packet loss, and unfriendly system interface, which will further lead to the inability to ensure the stability of the vault lifting process, increasing the risk of lifting and the difficulty of command.

[0043] In order to solve the above problems existing in the prior art, the present invention provides a control method and a control system for the gas lifting of the tank vault, which can accurately measure various data during the gas lifting process of the vault to improve the stability of the vault operation state and enhance the automation level of the tank vault gas lifting process.

[0044] In some non-limiting embodiments, the method for controlling the gas lifting of the storage tank vault provided in one aspect of the present invention may be implemented by the control system for the gas lifting of the storage tank vault provided in another aspect of the present invention.

[0045] The above control method will be described below in conjunction with some examples of control systems for gas lifting of storage tank vaults. Those skilled in the art will understand that these control method examples are only some non-limiting implementation methods provided by the present invention, which are intended to clearly demonstrate the main concept of the present invention and provide some specific solutions that are convenient for the public to implement, rather than to limit all working modes or all functions of the control system. Similarly, the control system is also only a non-limiting implementation method provided by the present invention, and does not constitute a limitation on the implementation subject of each step in these control methods.

[0046] Please see first Figure 1 Figure 1 A schematic structural diagram of a tank vault gas jacking method provided according to some embodiments of the present invention is shown.

[0047] like Figure 1 As shown, the working principle of the tank vault gas jacking is: use external pressurizing equipment to pressurize the sealed space formed by the vault 110, the concrete outer wall 120 and the base (not shown in the figure), so that a pressure difference is formed between the enclosed space and the external space, and the vault 110 is displaced by the pressure difference and rises from the bottom to the top.

[0048] Next, please see Figure 2 , Figure 2 A schematic structural diagram of a control system for gas lifting of a storage tank vault provided according to some embodiments of the present invention is shown.

[0049] like Figure 2As shown, in some embodiments of the present invention, the control system 200 for gas lifting of the tank dome mainly includes a data measurement unit 210, a data processing unit 240 and an execution control unit 250. The data measurement unit 210 can be used to obtain at least one static parameter and at least one dynamic parameter of the dome 110 during the gas lifting process. The data processing unit 240 can be used to calculate the smoothness of the dome 110 during the gas lifting process based on the at least one static parameter and the at least one dynamic parameter. The execution control unit 250 can be used to control the gas lifting process of the dome 110 based on the smoothness.

[0050] Preferably, the control system may further include: a data transmission unit 220, and / or a data collection unit 230, and / or a data display unit 260. The data transmission unit 220 may be used to transmit at least one static parameter, at least one dynamic parameter, and video data of the gas lifting process of the dome 110 during the gas lifting process to the data collection unit 230. The data collection unit 230 may be used to receive and store at least one static parameter, at least one dynamic parameter, and video data of the gas lifting process of the dome 110 uploaded by the data transmission unit 220. The data display unit 260 may be used to obtain and display at least one static parameter, at least one dynamic parameter, and video data of the gas lifting process of the dome 110 during the gas lifting process from the data transmission unit 220 and / or the data collection unit 230.

[0051] Specifically, the data measurement unit 210 may include a distance measuring device, a pressure detection device, a current and voltage detection device, and a video monitoring device. Further, the distance measuring device may include one or more of a laser distance measuring device, an ultrasonic distance measuring device, a radar distance measuring device, a rope distance measuring device, a servo distance measuring device, a two-dimensional code reading and positioning device, a grating or magnetic scale distance measuring device, and the like.

[0052] The various devices included in the above-mentioned data measurement unit 210 have built-in battery power supply modules, which are rechargeable or powered by solar modules, and have functions such as automatic data calibration, automatic collection, active or passive transmission, etc.

[0053] The data measurement unit 210 uses distance measurement, pressure, current and voltage sensors to accurately measure and monitor various data during the gas jacking process of the large storage tank vault, and can automatically calibrate and upload the measured data. Compared with the existing technology, a variety of more accurate sensors are used to improve the accuracy of the jacking status data. At the same time, the measurement of the fan current and voltage is also added to improve the safety of the jacking. In addition, charging and solar module power supply are added to the equipment to increase the working time of the unit.

[0054] The data transmission unit 220 is a wireless network transmission, including various wireless network transmission forms such as WIFI / 4G / 5G / LORA / ZIGBEE. The device in the data transmission unit 220 has a built-in battery power supply module, which can be charged or powered by a solar module. It has the function of high-speed real-time transmission of detection data and video data. The network has redundancy and roaming functions to ensure the stability and reliability of data transmission. Compared with the existing technology, this part solves the problems of unstable wireless data transmission and data packet loss, and realizes the self-organizing network function, so that various measurement data can be transmitted in real time, at high speed and stably during the jacking process. The use of rechargeable or solar module power supply enhances the practicality of the unit, improves the working time of the unit, and ensures the stability of the system.

[0055] The data collection unit 230 is installed in the communication server of the data center, and is used to receive the data uploaded by the field collection unit, store it in the real-time database after sorting, and receive various alarms and setting parameters from the data display unit, and send them to the execution control unit 250. The data collection unit 230 also includes: establishing a communication connection with the device, actively or passively receiving data, pre-processing and calculating data, storing data in the real-time database, memory database and historical database, determining data alarms, and issuing execution mechanism control instructions.

[0056] The data processing unit 240 is mainly used to receive data transmitted by the data collection unit 230, complete functions such as speed calculation, balance calculation, top time calculation, pressure calculation, current calculation, voltage calculation, early warning calculation and valve opening calculation of the arch 110, and feed back the calculation to the data display unit 260 and the execution control unit 250.

[0057] The data display unit 260 has the functions of 3D model display and simulation, historical operation curve display, jacking process alarm display, various control parameters and management data setting, and can provide manual / automatic data setting for the execution control unit 250.

[0058] The execution control unit 250 is a set of manual and automatic integrated fast execution gate control valves, which can receive the processing results of the data processing unit 240, the manual data of the data display unit 260 or the opening value of on-site manual control.

[0059] Next, the control method for the storage tank dome gas jacking will be described in detail in combination with the control system 200 for the storage tank dome gas jacking introduced above.

[0060] Please see Figure 3 , Figure 3 A schematic flow chart of a method for controlling gas lifting of a storage tank vault provided in accordance with some embodiments of the present invention is shown.

[0061] like Figure 3 As shown, in some embodiments, the method for controlling the gas lifting of the tank vault mainly includes the following steps:

[0062] S310: Obtain at least one static parameter and at least one dynamic parameter of the dome during the gas lifting process.

[0063] At least one static parameter may include an offset and / or a height of the dome 110 , and at least one dynamic parameter may include a speed at which the dome 110 is raised.

[0064] Please combine Figure 1 and Figure 2 , the data measurement unit 210 can first measure the lifting height H of the top of the tank where the arch 110 needs to be installed. Subsequently, a first distance measuring device, such as a laser distance measuring device, can be set on the top of the tank to measure the first measured distance of the arch 110 during the rising process from top to bottom. The laser distance measurement is fixed on the top of the tank, and the position of the laser reflector can be determined by an automatic laser leveling plumb. In addition, the laser sensor has a moving object measurement mode, and digital filtering is used to ensure the stability and authenticity of the measurement data under high-speed measurement conditions. Optionally, filtering can be achieved by devices such as a peak suppression filter or a pulse suppression filter.

[0065] Specifically, multiple distance measurement points can be set on the edge of the arch surface of the arch 110, for example, 6 equidistant distance measurement points A1 to A6 are set on the edge of the arch surface. The first distance measuring device set at the top of the tank, such as the laser distance measuring sensor in the laser distance measuring device, measures the first measured distance h1 of the 6 distance measurement points on the arch surface from the top of the tank, that is, the first measured distance h1 is the first measured actual height from the laser head to the reflector of the arch 110, in mm, which can be used to truly feedback the current real height of the arch 110 during the jacking process. At the same time, the actual heights of these 6 different distance measurement points are also the original data for calculating the rising speed of the arch 110 and calculating the management horizontal inclination. These 6 actual measured distances can be recorded as: L1, L2, L3, L4, L5, L6, which are the original data in the control process of the gas jacking of the tank arch.

[0066] Preferably, a second distance measuring device may be provided to correct and compensate the first measured distance. Specifically, after obtaining the vertical distances (L1, L2, L3, L4, L5, L6) of multiple distance measuring points from the top of the storage tank to the vault 110 through the first distance measuring device, the vertical distances of the six distance measuring points are calibrated through a second distance measuring device, such as a rope distance measuring device, to remove erroneous values ​​or perform distance measurement compensation.

[0067] Based on the vertical distances of the six distance measurement points after calibration or compensation, basic display data in the control process of the gas lifting of the tank dome can be obtained by calculation, that is, data that can be displayed on the data display unit 260, so that technicians can monitor and understand in real time the parameter values ​​related to the rising smoothness of the dome 110 during the gas lifting process, including but not limited to: the remaining height from the distance measurement point, the average remaining height, the rising height h2, the average rising height, etc.

[0068] The remaining height of the distance measurement point can be obtained by subtracting the compensation value obtained by the second distance measurement device from the first measured distance. The average remaining height is obtained by averaging the effective remaining heights of all the distance measurement points mentioned above. The rising height h2 can be obtained by subtracting the remaining height from the top height H. The average rising height h2 can be obtained by taking the average of all the effective rising heights h2.

[0069] Furthermore, the lifting speed of the arch 110 can be calculated based on the relevant data of the remaining height and the rising height h2 of the arch 110 in real time.

[0070] For example, if 10 distance measurement points are selected on the edge of the arch surface of the arch 110, the remaining heights of the 10 distance measurement points can be divided into five groups, and the speeds of the first to sixth data, the speeds of the second to seventh data, and ..., the speeds of the fifth to tenth data are calculated respectively, and then the average is taken to obtain the lifting speed of the arch 110.

[0071] When the field equipment communication works normally, the speed calculation can be started after all 10 data in the array are updated in real time.

[0072] If there is an abnormality in the communication of the on-site equipment, the lifting process of the arch 110 will be able to display the final valid value of the height calculation, and the data can be marked with a communication abnormality color as a reminder.

[0073] Then, the online average speed of all measuring points in the dome 110 is calculated, that is, all valid speeds are averaged. In particular, if there is a communication interruption at a measuring point, the speed value of the measuring point can be cancelled, and the online speeds of the remaining normal measuring points are averaged.

[0074] Furthermore, according to the real-time position data of the plurality of distance measurement points measured above, the offset of the dome 110 can also be determined, wherein the offset can include at least one of a horizontal tilt, a horizontal displacement, and a circumferential rotation.

[0075] Taking the horizontal tilt amount in the offset amount of the dome 110 as an example, the maximum tilt amount of the horizontal tilt amount in the process of raising the dome 110 can be obtained by subtracting the maximum distance on the line from the minimum distance on the line according to the remaining heights of the six measurement positions determined above (i.e., L1, L2, L3, L4, L5, and L6). Furthermore, an array can be established to average the above data over a period of time (e.g., 5 seconds).

[0076] When the field equipment communication works normally, the speed calculation can be started after all 6 data in the array are updated in real time.

[0077] If there is an abnormality in the communication of the on-site equipment, the lifting process of the arch 110 will be able to display the final valid value of the height calculation, and the data can be marked with a communication abnormality color as a reminder.

[0078] In addition, the remaining estimated time for the vault 110 to reach the top may be calculated based on the above average remaining height and the average speed on the line.

[0079] S320: Calculate the stability of the dome during the gas lifting process according to at least one static parameter and at least one dynamic parameter.

[0080] S330: Controlling the air lifting of the dome according to the smoothness.

[0081] Based on the offset of the arch 110 obtained above (for example, the maximum inclination in the horizontal inclination), the real-time height, the current lifting speed, and the remaining expected time to the top, the smoothness of the arch 110 during the gas lifting process can be calculated, and the gas lifting of the arch can be controlled by comprehensively controlling the fan and the gate valve opening.

[0082] Preferably, after obtaining the stability of the dome 110 at the current moment, it can be determined whether the stability is within the range of standard stability. When it is determined that the stability is within the range of standard stability, the current gas lifting state of the dome 110 can be maintained. If it is determined that the stability exceeds the range of standard stability, the lifting speed of the dome 110 can be adjusted to improve the stability of the dome 110.

[0083] Specifically, the fan current and the fan voltage of the fan system may be obtained, and then the fan current and the fan voltage may be adjusted to adjust the lifting speed of the arch 110 .

[0084] Before this step, the pressure in the storage tank can be measured first, for example, by methods including but not limited to strain gauge pressure measurement, piezoelectric pressure measurement, ceramic pressure measurement, diffused silicon pressure measurement, capacitive pressure measurement, inductive pressure measurement, sapphire pressure measurement, liquid height difference pressure measurement, etc.

[0085] The fan current can be measured by Hall induction, current mutual induction and other methods, and the fan voltage can be measured by direct measurement, mutual induction measurement and other methods.

[0086] Furthermore, the step of adjusting the lifting speed of the arch 110 to improve the stability of the arch may also include: obtaining an opening value of a gate; and adjusting the opening value of the gate to adjust the lifting speed.

[0087] The gate valve opening can be measured by encoder type opening measurement, resistance type opening measurement, etc. The gate valve opening can be controlled by motor + encoder type or resistance type, stepper motor + encoder type, servo positioning control type, etc.

[0088] Compared with the current automatic measurement system which only measures the data of the dome status, but does not monitor and control the fan current and voltage and gate lift of the gas lift fan system, the above-mentioned embodiments of the present invention respectively control the position of the top lift and the balance of the dome in the process from the source of the control process of the gas lift of the tank dome, that is, the fan for providing the motive force, and the tail, that is, the opening of the gate valve for providing a smooth rise of the dome.

[0089] You can refer to Figure 4 , Figure 4 A schematic diagram of an on-site construction implementation process of a method for controlling gas lifting of a storage tank vault provided in accordance with some embodiments of the present invention is shown.

[0090] In specific application scenarios, before implementing the control method of gas lifting of the tank vault, you can first prepare documents, personnel, and tools, and then install five major systems, including the fan system, balance system, sealing system, measurement system, and communication system. After the on-site personnel receive the technical safety briefing of gas pressure lifting, they will check the relevant equipment before gas pressure lifting. After the inspection is completed and everything is normal, turn on the fan.

[0091] During this process, the surveyors reported the data of the roof raising, and the fan team adjusted the air supply according to the received data. At the same time, the arch was raised 200 to 500 mm and then stabilized. The inspection team inside the tank conducted real-time inspections to ensure that the arch structure was in a free state.

[0092] When the arch is lifted to the correct installation position, the on-site personnel will assemble, weld, and inspect it after welding. After the inspection is qualified, the air damper is adjusted to slowly reduce the pressure, and finally the fan is turned off, and the air pressure lifting is completed.

[0093] In summary, the present invention provides a control system and a control method for the gas lifting of the vault of a storage tank, which can accurately measure various data during the gas lifting process of the vault to improve the stability of the vault operation state and enhance the automation level of the gas lifting process of the vault of the storage tank.

[0094] Those skilled in the art will further appreciate that the various illustrative logic blocks, modules, circuits, and algorithm steps described in conjunction with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or a combination of the two. To clearly illustrate this interchangeability of hardware and software, various illustrative components, blocks, modules, circuits, and steps are generally described above in terms of their functionality. Whether such functionality is implemented as hardware or software depends on the specific application and the design constraints imposed on the overall system. The technician may implement the described functionality in different ways for each specific application, but such implementation decisions should not be interpreted as resulting in a departure from the scope of the present invention.

[0095] The various illustrative logic modules and circuits described in conjunction with the embodiments disclosed herein may be implemented or executed with a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general purpose processor may be a microprocessor, but in the alternative, the processor may be any conventional processor, controller, microcontroller, or state machine. The processor may also be implemented as a combination of computing devices, such as a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in cooperation with a DSP core, or any other such configuration.

[0096] The steps of the method or algorithm described in conjunction with the embodiments disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. The software module may reside in a RAM memory, a flash memory, a ROM memory, an EPROM memory, an EEPROM memory, a register, a hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art. An exemplary storage medium is coupled to a processor so that the processor can read and write information from / to the storage medium. In an alternative, a storage medium may be integrated into a processor. The processor and the storage medium may reside in an ASIC. The ASIC may reside in a user terminal. In an alternative, the processor and the storage medium may reside in a user terminal as discrete components.

[0097] Although the above methods are illustrated and described as a series of actions for simplicity of explanation, it should be understood and appreciated that these methods are not limited by the order of the actions, because according to one or more embodiments, some actions may occur in a different order and / or concurrently with other actions from those illustrated and described herein or not illustrated and described herein but understandable to those skilled in the art.

[0098] The previous description of the disclosure is provided to enable any person skilled in the art to make or use the disclosure. Various modifications to the disclosure will be apparent to those skilled in the art, and the general principles defined herein may be applied to other variations without departing from the spirit or scope of the disclosure. Thus, the disclosure is not intended to be limited to the examples and designs described herein, but should be granted the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A control system for gas lifting of a storage tank vault, characterized in that: include: A laser distance measuring device, used to obtain at least one static parameter and at least one dynamic parameter of the dome during the gas lifting process, wherein the at least one static parameter includes a vertical distance from the top of the storage tank to a plurality of distance measurement points of the dome; A rope distance measuring device for collecting calibration data of the vertical distance; a data processing unit, configured to calculate the stability of the dome during the gas lifting process according to the at least one static parameter and the at least one dynamic parameter; and An execution control unit is configured to: obtain the at least one static parameter and the at least one dynamic parameter; correct the vertical distances of the multiple distance measurement points according to the calibration data to remove erroneous values; calculate the smoothness of the arch during the gas lifting process according to the at least one corrected static parameter and the at least one dynamic parameter, wherein the corrected static parameter includes the corrected vertical distance; and control the gas lifting of the arch according to the smoothness.

2. The control system according to claim 1, characterized in that: Also includes: A data transmission unit, used for transmitting at least one static parameter and at least one dynamic parameter of the dome during the gas lifting process and video data of the gas lifting process of the dome to a data collection unit; and / or The data collection unit is used to receive and store at least one static parameter, at least one dynamic parameter and the video data of the gas lifting process of the dome uploaded by the data measurement unit; and / or A data display unit is used to obtain and display at least one static parameter, at least one dynamic parameter and a video of the gas lifting process of the dome during the gas lifting process from the data transmission unit and / or the data collection unit.

3. A method for controlling the gas lifting of a storage tank vault, characterized in that: include: Acquire at least one static parameter and at least one dynamic parameter of the dome during the gas lifting process via a laser distance measuring device, wherein the at least one static parameter includes a vertical distance from the top of the storage tank to a plurality of distance measurement points of the dome; Collecting calibration data of the vertical distance via a pull-rope distance measuring device, and correcting the vertical distances of the plurality of distance measurement points according to the calibration data to remove erroneous values; Calculating, via a data processing unit, the stability of the dome during the gas lifting process based on at least one corrected static parameter and the at least one dynamic parameter; and The dome gas lifting is controlled via an execution control unit according to the smoothness.

4. The control method according to claim 3, characterized in that: The at least one static parameter includes an offset of the dome, and the at least one dynamic parameter includes a lifting speed of the dome.

5. The control method according to claim 4, characterized in that: The at least one static parameter also includes the positions of a plurality of distance measurement points on the edge of the arch surface of the arch. The step of obtaining at least one static parameter and at least one dynamic parameter of the arch during the gas lifting process includes: determining positions of the plurality of distance measurement points of the vault; and The offset of the dome is determined according to the positions of the multiple distance measurement points, wherein the offset includes a horizontal tilt.

6. The control method according to claim 5, characterized in that: The step of obtaining at least one static parameter and at least one dynamic parameter of the dome during the gas lifting process also includes: determining the height of the vault according to the positions of the plurality of distance measurement points; and According to the height, the lifting speed of the arch is calculated.

7. The control method according to claim 4, characterized in that: The step of calculating the stability of the dome during the gas lifting process according to the at least one static parameter and the at least one dynamic parameter comprises: The stability of the arch during the gas lifting process is calculated according to the displacement, height and lifting speed of the arch.

8. The control method according to claim 4, characterized in that: The step of controlling the vault gas lifting according to the smoothness comprises: Determining whether the stability is within a range of standard stability; In response to the stability being within the range of the standard stability, maintaining the current gas lifting state of the dome; and In response to the smoothness exceeding the range of the standard smoothness, the lifting speed is adjusted to improve the smoothness of the arch.

9. The control method according to claim 8, characterized in that: The step of adjusting the lifting speed to improve the stability of the arch comprises: Obtaining a fan current and a fan voltage of a fan system; and Analyze the working status of the generator and the fan; and adjust the opening of the fan damper to adjust the lifting speed.

10. The control method according to claim 8, characterized in that: The step of adjusting the lifting speed to improve the stability of the arch comprises: Obtaining the gate opening value; and The opening value of the gate is adjusted to adjust the lifting speed.

11. A computer-readable storage medium having computer instructions stored thereon, characterized in that: When the computer instructions are executed by the processor, the method for controlling the gas lifting of the tank dome as described in any one of claims 3 to 10 is implemented.

Images