A piston drift warning method and device for a sleeve gas tank

Abstract

The present invention provides a piston drift warning method and device for a sleeve gas cabinet, relating to the field of gas cabinet detection technology. The sleeve gas cabinet piston drift warning method includes: obtaining the operating height of the piston and the spacing between the edge of the piston and the inner cabinet wall or the inner wall of the sleeve at the same time, wherein the operating height is the height of the piston from the bottom wall of the cabinet; determining the relative positional relationship between the piston and the sleeve based on the relationship between the operating height and the sleeve wall height; and providing a piston drift warning based on the relative positional relationship, the spacing, and the drift allowance. This invention effectively solves the problem of online measurement and warning of piston drift in gas cabinets with inner sleeves.

Description

Technical Field

[0001] The present invention relates to the technical field of gas cabinet detection, and in particular to a piston drift early warning method and device for a sleeve gas cabinet. Background Art

[0002] Gas holders are generally used to recover, store and stabilize the pressure of gas generated during the smelting process. They are generally composed of a gas holder cabinet, a piston, a diaphragm and other structures. The piston performs reciprocating linear motion in the cabinet. The diaphragm connects the piston and the cabinet and seals the gas. Once the piston deviates from its original operating position during operation, that is, piston drift occurs, the guide wheel on the piston will collide with the cabinet wall, causing damage to the cabinet, rupture of the diaphragm, and large amounts of gas leakage.

[0003] Existing gas tanks are generally membrane tanks, which are generally modified from thin oil sealing tanks. Thin oil sealing tanks have relatively high requirements for the cabinet structure. Once the cabinet is deformed, sealing oil and gas leakage will occur. In order to save investment, they will be modified into membrane tanks. However, due to different cabinet types, an (inner) sleeve is usually installed in the thin oil tank to protect the membrane. When monitoring piston drift, the existing technology uses an ultrasonic sensor to measure the distance between the piston and the cabinet wall. However, when applied to a membrane tank, there will be two sets of data with a large difference. Since the early warning is based on the measurement results, the accuracy of the piston drift warning is not high at this time, and false alarms are prone to occur. Summary of the Invention

[0004] The present invention aims to solve the problem that the prior art has low early warning accuracy when applied to piston drift monitoring of a gas cabinet with a sleeve.

[0005] To address the above-mentioned problems, in a first aspect, the present invention provides a piston drift warning method for a sleeve gas cabinet, which is applied to a gas cabinet with a sleeve. The gas cabinet includes a cabinet body and a piston disposed within the cabinet body. The inner cabinet wall of the cabinet body includes a sleeve that is sleeved on the sleeve, and the height of the sleeve wall does not exceed the height of the inner cabinet wall of the cabinet body. Part of the piston's travel is located within the sleeve. The piston drift warning method for the sleeve gas cabinet includes:

[0006] Acquire in real time the operating height of the piston and the distance between the edge of the piston and the inner cabinet wall or the inner wall of the sleeve at the same moment, wherein the operating height is the height of the piston from the bottom wall of the cabinet;

[0007] Determining the relative positional relationship between the piston and the sleeve based on the relationship between the operating height and the cylinder wall height;

[0008] According to the relative position relationship, the spacing and the drift allowance, a drift warning is performed on the piston, wherein different relative position relationships correspond to different drift allowances.

[0009] Optionally, judging the relative positional relationship between the piston and the sleeve based on the relationship between the running height and the height of the sleeve wall includes:

[0010] Obtaining the absolute height of the sleeve, wherein the absolute height is the height from the top of the sleeve to the bottom wall of the cabinet;

[0011] Determine a height range of the sleeve in the cabinet according to the absolute height and the position of the bottom of the cylinder wall in the cabinet, wherein the difference between the maximum and minimum values ​​of the height range is equal to the height of the cylinder wall;

[0012] According to the operating height and the height range, it is determined whether the piston operates inside or outside the sleeve.

[0013] Optionally, judging whether the piston is operating inside or outside the sleeve according to the operating height and the height range includes:

[0014] If the operating height is within the height range, it is determined that the piston is operating inside the sleeve;

[0015] If the operating height is outside the height range, it is determined that the piston is operating outside the sleeve.

[0016] Optionally, the providing a drift warning for the piston according to the relative position relationship, the spacing and the drift allowable value includes:

[0017] If the piston runs inside the sleeve, determining whether the distance between the piston and the sleeve is less than a first drift allowable value; if so, performing a first drift warning;

[0018] If the piston is running outside the sleeve, determining whether the distance between the piston and the sleeve when the piston is running outside the sleeve is less than a second drift allowable value, and if so, performing a second drift warning;

[0019] The first drift allowable value is smaller than the second drift allowable value, and the drift allowable value includes the first drift allowable value and the second drift allowable value.

[0020] Optionally, it also includes:

[0021] determining a transition height zone for operation of the piston, wherein a minimum value of the transition height zone is lower than an end portion of the sleeve and a maximum value thereof is higher than an end portion of the sleeve, and a total height of the transition height zone is equal to a preset height value;

[0022] If the operating height is within the transition height zone, the distance that the operating height is within the transition height zone is recorded, and no drift warning is performed.

[0023] Optionally, obtaining the operating height of the piston and the distance between the edge of the piston and the inner cabinet wall or the inner wall of the sleeve at the same time includes:

[0024] Obtaining a real-time height value of the center of the piston, and using the real-time height value as the operating height;

[0025] Acquire spacing data collected at one or more positions of the edge, and use the minimum value of the spacing data as the spacing;

[0026] The time nodes corresponding to the operating height and the spacing are the same.

[0027] Optionally, it also includes:

[0028] Generate historical data based on the operating height and the spacing, and the warning record of the piston drift warning;

[0029] The historical data is displayed on an operation interface of the operation station.

[0030] The present invention obtains the running height of the piston and the distance between the edge of the piston and the inner cabinet wall or inner tube wall in real time at the same time; and judges the relative position relationship between the piston and the sleeve based on the relationship between the running height and the tube wall height of the sleeve, so as to accurately distinguish the actual running stroke of the piston and the relative position of the sleeve, thereby facilitating the determination of different early warning mechanisms according to the actual running stroke, and performing drift early warning on the piston according to the relative position relationship, the distance and the drift allowable value, wherein different relative position relationships correspond to different drift allowable values. Therefore, by distinguishing the position of the actual running stroke, and then determining whether the piston is in the inner cabinet wall inside the sleeve or outside the sleeve, and combining different relative position relationships with different drift allowable values, targeted and accurate early warnings can be performed, and staff can take corresponding measures based on the early warning. That is, the present invention provides effective data for the operation of the gas cabinet, and to a certain extent, can avoid a large number of gas leakage accidents caused by piston drift.

[0031] In a second aspect, the present invention further provides a piston drift warning device for a sleeve gas tank, the gas tank comprising a tank body and a piston disposed within the tank body, the tank body being sleeved on the sleeve, the sleeve wall height not exceeding the height of the inner wall of the tank body, and a portion of the piston's travel being located within the sleeve. The piston drift warning device for the sleeve gas tank comprises:

[0032] A height detection unit is used to detect the operating height of the piston in real time and send it to the control and early warning unit, wherein the operating height is the height of the piston from the bottom wall of the cabinet.

[0033] a distance sensing unit, configured to measure in real time the distance between the edge of the piston and the inner cabinet wall or the inner wall of the sleeve, and send the measured distance to the control and warning unit;

[0034] A control and warning unit is used to obtain the spacing and running height at the same moment, and judge the relative position relationship between the piston and the sleeve based on the relationship between the running height and the wall height of the sleeve; and to provide a drift warning for the piston based on the relative position relationship, the spacing and the drift allowable value, wherein different relative position relationships correspond to different drift allowable values.

[0035] Optionally, the height detection unit includes a height detector installed on the top of the inner wall of the cabinet, and the control and warning unit includes a control unit and an operation station. The height detection unit and the distance sensing unit are respectively connected to the control unit, and the operation station is connected to the control unit.

[0036] Optionally, the distance sensing unit includes one or more laser sensors evenly installed on the edge of the piston, and the laser sensors are respectively connected to the display screen and the control unit through a communication unit.

[0037] In a third aspect, the present invention provides a control unit comprising a memory and a processor;

[0038] The memory is used to store computer programs;

[0039] The processor is configured to implement the piston drift warning method for the sleeve gas holder as described in the first aspect when executing the computer program.

[0040] In a fourth aspect, the present invention provides a computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, the piston drift warning method for a sleeve gas tank as described in the first aspect is implemented.

[0041] The piston drift warning device, control unit, and computer-readable storage medium of the sleeve gas cabinet provided by the present invention have the same beneficial effects as the piston drift warning method of the sleeve gas cabinet relative to the prior art, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 A schematic flow chart of a method for early warning of piston drift of a sleeve gas cabinet according to an embodiment of the present invention is shown;

[0043] Figure 2 A schematic structural diagram of a piston drift warning device for a sleeve gas cabinet according to an embodiment of the present invention is shown;

[0044] Figure 3 A schematic structural diagram of a control unit in an embodiment of the present invention is shown.

[0045] Description of reference numerals:

[0046] 1-gas cabinet; 11-sleeve; 12-cabinet; 13-piston; 2-distance sensing unit; 3-height detection unit; 4-line; 5-communication unit; 6-display; 7-control unit; 71-memory; 72-processor; 8-operation station. DETAILED DESCRIPTION

[0047] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0048] It should be noted that, in the present invention, relational terms such as "first" and "second" are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "includes," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0049] Throughout this specification, references to the terms "embodiment," "one embodiment," and "an implementation" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or implementation are included in at least one embodiment or implementation of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or implementation. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or implementations.

[0050] Reference Figure 1 and Figure 2 As shown, an embodiment of the present invention provides a piston drift warning method for a sleeve gas tank; the gas tank 1 includes a cabinet body 12 and a piston 13 arranged in the cabinet body 12, the cabinet body 12 is sleeved on the sleeve 11 and the sleeve wall height of the sleeve 11 is lower than or equal to the height of the inner cabinet wall of the cabinet body 12 (that is, the highest point of the sleeve 11 is lower than the highest point of the inner cabinet wall), and part of the stroke of the piston 13 is located in the sleeve 11; that is, the sleeve 11 is coaxially arranged in the inner cabinet wall and covers part of the inner cabinet wall, actually serving as a part of the inner cabinet wall, constituting part of the inner cabinet wall, while the other part is the other part of the inner cabinet wall not covered by the sleeve 11.

[0051] The piston drift early warning method of the sleeve gas tank includes:

[0052] S100: Acquire in real time the operating height of the piston 13 and the distance between the edge of the piston 13 and the inner cabinet wall or the inner cylinder wall of the sleeve 11 at the same moment, wherein the operating height is the height of the piston 13 from the bottom wall of the cabinet body 12.

[0053] Specifically, the piston 13 performs reciprocating linear motion in the inner cabinet wall along the height direction of the inner cabinet wall. A spacing sensor can be installed at the edge of the piston 13, and a height sensor can be installed on the top of the inner cabinet wall. It is necessary to ensure that the measuring range of the corresponding sensor can accurately cover the spacing or height, and then connect the sensor to the data acquisition device, and connect the spacing sensor to the data acquisition device, such as a PLC system or a computer, to collect and process data from the sensor. Before starting the measurement, the sensor needs to be calibrated to ensure the accuracy and reliability of its measurement results. The final data required is a series of data on the running height and spacing at multiple times at the same time.

[0054] S200 : judging the relative positional relationship between the piston 13 and the sleeve 11 according to the relationship between the operating height and the wall height of the sleeve 11 .

[0055] Specifically, by comparing the running height of the piston 13 and the wall height of the sleeve 11, the relative position relationship between the piston 13 and the sleeve 11 can be judged, thereby determining that the running stroke of the piston 13 may be inside the sleeve 11 or in the inner cabinet wall (non-sleeve 11 part).

[0056] S300: Performing a drift warning on the piston 13 according to the relative position relationship, the spacing and the drift tolerance, wherein different relative position relationships correspond to different drift tolerances.

[0057] Specifically, it is determined that the operating stroke of the piston 13 may be inside the sleeve 11 or in the inner cabinet wall (non-sleeve 11 part). According to the actual situation that the sleeve 11 is coaxially fitted in the inner cabinet wall, when the operating stroke may be inside the sleeve 11, a smaller drift allowable value should be determined, and when the operating stroke may be outside the sleeve 11, a larger drift allowable value should be determined. If the distances are respectively smaller than the corresponding drift allowable values ​​(smaller drift allowable values ​​and / or larger drift allowable values), a drift warning should be issued, indicating that the guide wheel on the piston 13 is at risk of colliding with the cabinet wall, causing damage to the cabinet body 12.

[0058] For example, when the piston 13 runs below A meters, the piston 13 runs inside the sleeve 11, and the drift (standard) allowable value is 400 mm. When the piston 13 drift measurement data (the spacing of the pistons 13) is lower than the allowable value, an early warning should be issued. When the piston 13 runs above B meters (B is greater than or equal to A), the piston 13 runs outside the sleeve 11, and the drift (standard) allowable value is 700 mm. When the piston 13 drift measurement data (the spacing of the pistons 13) is lower than the allowable value, an early warning should be issued. The early warning can be issued by issuing an alarm in the background to remind the staff.

[0059] In practical applications, this embodiment obtains the operating height of the piston 13 and the spacing between the edge of the piston 13 and the inner cabinet wall or inner tube wall at the same moment in real time. Based on the relationship between the operating height and the height of the tube wall of the sleeve 11, the relative positional relationship between the piston 13 and the sleeve 11 is determined. This allows accurate distinction between the actual operating stroke of the piston 13 and the relative position of the sleeve 11. This facilitates determining different warning mechanisms based on the actual operating stroke. Based on the relative positional relationship, the spacing, and the drift tolerance, a drift warning is provided for the piston 13. Different relative positional relationships correspond to different drift tolerances. Therefore, by distinguishing the actual operating stroke position, and determining whether the piston 13 is inside the sleeve 11 or outside the sleeve 11 in the inner cabinet wall, and combining different relative positional relationships with different drift tolerances, a targeted and accurate warning can be provided. Staff can then take appropriate measures in response to the warning. This means that the present invention provides effective data for the operation of the gas cabinet 1 and, to a certain extent, can avoid large-scale gas leakage accidents caused by piston 13 drift.

[0060] It should be noted that the existing technology only measures the piston drift of a general diaphragm cabinet. The present invention effectively solves the problem of online measurement and early warning of the piston drift of a gas cabinet with an inner sleeve 11, improves the safety of the operation of the gas cabinet 1, reduces the danger of labor and personnel frequently entering the cabinet, and has great promotion and application value.

[0061] like Figure 2 As shown, as an optional embodiment of the present invention, judging the relative position relationship between the piston 13 and the sleeve 11 based on the relationship between the running height and the wall height of the sleeve 11 includes:

[0062] Obtain the absolute height of the sleeve 11 ; in one embodiment, the sleeve 11 is attached to the bottom wall of the cabinet 12 , and in this case, the absolute height is the height from the top of the sleeve 11 to the bottom wall of the cabinet 12 .

[0063] For example, the absolute height of the sleeve 11 is 25 m, and the sleeve 11 is actually a cylinder with a through middle.

[0064] Determine the corresponding height range of the sleeve 11 in the cabinet 12 according to the absolute height and the position of the bottom of the cylinder wall in the cabinet 12, wherein the difference between the maximum and minimum values ​​of the height range is equal to the height of the cylinder wall;

[0065] The position of the bottom of the cylinder wall in the cabinet 12 is determined, and the height range is the bottom position plus the absolute height. For example, if the position of the bottom of the cylinder wall in the cabinet 12 is 0m, the height range is expressed as an interval (0, 25). For another example, if the position of the bottom of the cylinder wall in the cabinet 12 is 2m, the height range is expressed as an interval (2, 27).

[0066] Based on the operating height and the height range, it is determined whether the piston 13 is operating inside or outside the sleeve 11. After the height range is determined, the sleeve 11 and the operating height are placed on the same comparison basis (the total height of the cabinet 12) for direct comparison. Optionally, based on the operating height and the height range, determining whether the piston 13 is operating inside or outside the sleeve 11 includes:

[0067] If the operating height is within the height range, it is determined that the piston 13 is operating inside the sleeve 11 .

[0068] If the operating height is outside the height range, it is determined that the piston 13 is operating outside the sleeve 11 .

[0069] Exemplarily, the height range of the sleeve 11 is expressed as an interval of (0, 25), and the height of the inner cabinet wall itself is expressed as an interval of (0, 50). For example, when the operating height is 30m, it is judged that the piston 13 is operating outside the sleeve 11, that is, it is operating in the inner cabinet wall above the sleeve 11. When the operating height is 15m, it is judged that the piston 13 is operating inside the sleeve 11, that is, it is operating inside the sleeve 11.

[0070] Of course, the sleeve 11 does not have to be installed at the bottom of the inner cabinet wall. If it is installed in the middle, this embodiment is also applicable.

[0071] When this embodiment is applied in practice, by judging whether the operating height is within or outside the height range, it is determined whether the piston 13 is operating inside or outside the sleeve 11. The relative position relationship between the piston 13 and the sleeve 11 can be accurately judged based on the relationship between the actual position of the sleeve 11 and the operating height, and the position of the sleeve 11 does not have to be limited to a fixed position.

[0072] As an optional embodiment of the present invention, the performing drift warning on the piston 13 according to the relative position relationship, the spacing and the drift allowable value includes:

[0073] If the piston 13 runs inside the sleeve 11, it is determined whether the distance between the piston 13 and the sleeve 11 is less than a first drift allowable value. If so, a first drift warning is issued.

[0074] For example, the full stroke of the piston 13 is 50 meters, and the inner cylinder height is 25 meters. When the piston 13 runs below 25 meters, the standard drift value of the piston 13 is 400mm and the allowable value is ±120mm. Any value in the range of 280-520mm can be taken as the first drift allowable value. If it is less than the first drift allowable value, there is a possibility that the guide wheel on the piston 13 will collide with the cabinet wall, and the first drift warning will be issued at this time.

[0075] If the piston 13 runs outside the sleeve 11, it is determined whether the distance between the piston 13 and the sleeve 11 is less than a second drift allowable value. If so, a second drift warning is issued.

[0076] For example, when the piston 13 runs above 25 meters, the standard drift value of the piston 13 is 700mm and the allowable value is ±120mm. Any value in the range of 580-820mm can be taken as the second drift allowable value. If it is less than the second drift allowable value, there is a possibility that the guide wheel on the piston 13 will collide with the cabinet wall, and a second drift warning will be issued at this time.

[0077] The first drift allowable value is smaller than the second drift allowable value, and the drift allowable value includes the first drift allowable value and the second drift allowable value.

[0078] That is, the allowable value of the distance between the piston 13 in the sleeve 11 should be smaller than the allowable value of the distance between the piston 13 in the cabinet wall outside the sleeve 11, which is also in line with reality.

[0079] In practical applications, this embodiment monitors the positional relationship and spacing between piston 13 and sleeve 11, providing early warning of drift, preventing potential malfunctions and ensuring the normal operation and safety of the equipment. Furthermore, by setting two different drift tolerances, the position of piston 13 can be more accurately monitored, improving the accuracy and reliability of warnings.

[0080] As an optional embodiment of the present invention, it also includes:

[0081] A transition height zone in which the piston 13 operates is determined, wherein a minimum value of the transition height zone is lower than an end portion of the sleeve 11 and a maximum value thereof is higher than an end portion of the sleeve 11 , and a total height of the transition height zone is equal to a preset height value.

[0082] For example, the sleeve 11 is 25 meters high and is installed at the bottom of the inner cabinet wall. The 1 meter covering the top of the sleeve 11 is used as the transition height zone, that is, 0.5 meters below the top of the sleeve 11 and 0.5 meters above the top of the sleeve 11. This interval is the transition height zone (the actual operating height is 24.5-25.5 meters). The purpose of determining the transition height zone is to detect uneven movement of the piston 13 within the transition height zone, that is, part of the piston 13 may have left the sleeve 11, but another part is still inside the sleeve 11, or part of the piston 13 may have entered the sleeve 11, but another part is still outside the sleeve 11. Normal drift warning continues within the travel ranges of 0-24.5 and 25.5-50 meters.

[0083] For another example, the height of the sleeve 11 is 25m, and the sleeve 11 is installed at a position 3m away from the bottom of the inner cabinet wall. The 1m covering the top and bottom of the sleeve 11 is used as the transition height zone, that is, there are two height transition zones, one is 0.5m downward from the top of the sleeve 11 and 0.5m upward from the top of the sleeve 11. This interval is the transition height zone (the actual operating height is 27.5-28.5m), and the other is 0.5m downward from the bottom of the sleeve 11 and 0.5m upward from the bottom of the sleeve 11. This interval is the transition height zone (the actual operating height is 2.5-3.5m).

[0084] If the operating height is within the transition height zone, the distance that the operating height is within the transition height zone is recorded, and no drift warning is performed.

[0085] Specifically, when the operating height is in the transition height zone, that is, the operating height is within the height range of the operating height, the corresponding change in the spacing is recorded at this time, and no warning is issued regardless of whether the spacing exceeds the standard. Research has shown that when the piston 13 is running in the transition height zone, if the spacing exceeds the drift allowable value, it is because of the unevenness phenomenon stated above. At this time, the guide wheel on the piston 13 will not collide with the cabinet wall to cause damage to the cabinet body 12, and the membrane will not be torn, and will not cause gas leakage. Therefore, recording the corresponding change in spacing can facilitate subsequent improvements and tests, further reduce the occurrence of unevenness, and help to increase the life of the piston 13.

[0086] It can be understood that the setting of the above transition height zone is conducive to reducing false warnings during the operation of the piston 13, thereby ensuring that the real warning reflects the actual operation height of the piston 13 that may cause damage to the cabinet 12.

[0087] As an optional embodiment of the present invention, obtaining the operating height of the piston 13 and the distance between the edge of the piston 13 and the inner cabinet wall or the inner wall of the sleeve 11 at the same time includes:

[0088] Obtaining a real-time height value of the center of the piston 13, and using the real-time height value as the operating height;

[0089] The real-time height value obtained is measured with the center of the piston 13 as the measuring point, which is more accurate than height measurement based on the edge.

[0090] Obtain spacing data collected at one or more positions of the edge, and use the minimum value of the spacing data as the spacing; wherein the time nodes corresponding to the running height and the spacing are the same.

[0091] One or more distance measuring sensors may be provided on the edge of the piston 13 to measure the distance between the edge and the inner cabinet wall when the piston 13 reciprocates up and down, and the minimum value thereof is used as the distance. The edge at which the minimum value is located is most likely to collide with the inner cabinet wall.

[0092] When this embodiment is applied in practice, the distance and height values ​​at the same time are obtained respectively. The selection of the distance and height values ​​is representative, so the result of the drift warning analysis is more accurate.

[0093] As an optional embodiment of the present invention, it also includes:

[0094] Generate historical data based on the operating height and the spacing, and the warning record of the drift warning of the piston 13;

[0095] The historical data is displayed on the operation interface of the operation station 8 .

[0096] Specifically, after completing the drift data measurement and height measurement of the piston 13 and combining the two for early warning, historical data is formed based on these and saved on the operating station 8 in the form of curves (such as spacing-time curve, height-time curve, early warning-time curve) for more intuitive subsequent viewing.

[0097] The present invention further provides a piston drift warning device for a sleeve gas tank. The gas tank 1 includes a tank body 12 and a piston 13 disposed within the tank body 12. The tank body 12 is sleeved on the sleeve 11, and the height of the sleeve 11 is lower than or equal to the height of the inner wall of the tank body 12. Part of the travel of the piston 13 is located within the sleeve 11. The piston drift warning device includes:

[0098] The height detection unit 3 is used to detect the operating height of the piston 13 in real time and send it to the control and warning unit, wherein the operating height is the height of the piston 13 from the bottom wall of the cabinet 12.

[0099] The distance sensing unit 2 is used to measure the distance between the edge of the piston 13 and the inner cabinet wall or the inner wall of the sleeve 11 in real time and send the distance to the control and warning unit;

[0100] A control and warning unit is used to obtain the spacing and running height at the same moment, and judge the relative position relationship between the piston 13 and the sleeve 11 based on the relationship between the running height and the wall height of the sleeve 11; and to provide a drift warning for the piston 13 based on the relative position relationship, the spacing and the drift allowable value, wherein different relative position relationships correspond to different drift allowable values.

[0101] The specific implementation of this embodiment can refer to the corresponding implementation method mentioned above and will not be described again here.

[0102] As an optional embodiment of the present invention, the height detection unit 3 includes a height detector installed at the top of the inner wall of the cabinet 12, the control and early warning unit includes a control unit 7 and an operating station 8, and the height detector and the distance sensing unit 2 are respectively connected to the control unit 7.

[0103] It should be noted that when the height detector is set on the inner top wall, what is displayed is the height between the top of the piston 13 and the bottom of the cabinet 12, which is actually the difference between the height of the inner cabinet wall of the cabinet 12 and the measured distance. The measured distance is the distance between the height detector itself and the piston.

[0104] Specifically, after starting the height detector and the distance sensing unit 2, the same collection cycle and collection time node are set by the control unit 7 to realize the collection of the distance and height at the same time. The control unit 7 processes the distance and height at the same time and determines whether an early warning is required. When an early warning is required, the control unit 7 issues an early warning instruction to the operating station 8 for early warning, such as issuing an early warning alarm. The operating station 8 generally uses a microcomputer as the host and is equipped with an operator keyboard and an engineer keyboard to facilitate information exchange between the user and the control unit 7.

[0105] As an optional embodiment of the present invention, the distance sensing unit 2 includes one or more laser sensors evenly installed on the edge of the piston 13, and the laser sensors are respectively connected to the display screen 6 and the control unit 7 through the communication unit 5.

[0106] For example, eight laser sensors with a range of (0-1000) mm are installed at eight locations on the edge of piston 13. The laser sensors move up and down with piston 13, and the eight locations are evenly distributed around the (circular) edge of piston 13. The data collected by the laser sensors is collected by a hub on piston 13 and aggregated to line 4. Line 4 transmits data from the hood on top of gas tank 1 to the central control room and connects to communication unit 5 (located in the central control room). Communication unit 5 samples the data one by one, decomposes the specific location based on the location address of the laser sensor, and displays it on display screen 6 (such as a touch screen). Simultaneously, the decomposed data is output one by one to (4-20) mA to control unit 7 for data conversion, so that the spacing (drift data) is transmitted to control unit 7 in real time. Control unit 7 adds data analysis of the operating height of piston 13 during the drift data analysis process, thereby achieving complete collection and local display of drift data, and can also be compared with the operating height. Communication unit 5 is an existing unit for converting data, such as a digital-to-analog converter that converts analog signals collected by sensors into digital signals.

[0107] like Figure 3 As shown, an embodiment of the present invention provides a control unit 7, including a memory 71 and a processor 72; the memory 71 is used to store a computer program; the processor 72 is used to implement the piston drift warning method of the sleeve gas tank as described above when executing the computer program.

[0108] In other words, a control unit 7 includes a memory 71 and a processor 72 coupled to the memory 71; the memory 71 is configured to store a computer program; and the processor 72 is configured to perform the following operations when executing the computer program:

[0109] Real-time acquisition of the operating height of the piston 13 and the distance between the edge of the piston 13 and the inner cabinet wall at the same moment;

[0110] According to the relationship between the operating height and the wall height of the sleeve 11, the relative position relationship between the piston 13 and the sleeve 11 is determined;

[0111] According to the relative position relationship, the spacing and the drift tolerance, a drift warning is performed on the piston 13 , wherein different relative position relationships correspond to different drift tolerances.

[0112] An embodiment of the present invention provides a computer-readable storage medium having a computer program stored thereon. When the computer program is executed by the processor 72 , the piston drift warning method for a sleeve gas holder as described above is implemented.

[0113] Alternatively, a non-volatile computer-readable storage medium may store a computer program that, when executed by the processor 72, causes the processor to perform the following operations:

[0114] Real-time acquisition of the operating height of the piston 13 and the distance between the edge of the piston 13 and the inner cabinet wall at the same moment;

[0115] According to the relationship between the operating height and the wall height of the sleeve 11, the relative position relationship between the piston 13 and the sleeve 11 is determined;

[0116] According to the relative position relationship, the spacing and the drift tolerance, a drift warning is performed on the piston 13 , wherein different relative position relationships correspond to different drift tolerances.

[0117] Those skilled in the art will appreciate that all or part of the processes in the above-described embodiments can be implemented by instructing the relevant hardware through a computer program. The program can be stored in a non-volatile computer-readable storage medium. When the program is executed, it can include the processes of the embodiments of the above-described methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided by the present invention can include non-volatile and / or volatile memory. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory can include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in various forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).

[0118] The foregoing description is intended only to provide specific embodiments of the present invention, which will enable those skilled in the art to understand and implement the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not intended to be limited to the embodiments shown herein, but is to be construed in the widest possible manner consistent with the principles and novel features disclosed herein.

[0119] Although the present invention is disclosed as above, the protection scope of the present invention is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications will fall within the protection scope of the present invention.

Claims

1. A piston drift warning method for a sleeve gas tank, characterized in that: The invention is applied to a gas cabinet (1) with a sleeve (11), wherein the gas cabinet (1) comprises a cabinet body (12) and a piston (13) arranged in the cabinet body (12); the cabinet body (12) is sleeved on the sleeve (11), and the height of the sleeve (11) wall does not exceed the height of the inner cabinet wall of the cabinet body (12); a part of the stroke of the piston (13) is located in the sleeve (11); and the piston drift warning method of the sleeve gas cabinet comprises: Obtaining the operating height of the piston (13) and the distance between the edge of the piston (13) and the inner cabinet wall or the inner wall of the sleeve (11) at the same time, wherein the operating height is the height of the piston (13) from the bottom wall of the cabinet (12); Determining the relative positional relationship between the piston (13) and the sleeve (11) based on the relationship between the operating height and the cylinder wall height; According to the relative position relationship, the spacing and the drift allowance, a drift warning is performed on the piston (13), wherein different relative position relationships correspond to different drift allowances.

2. The piston drift warning method for a sleeve gas tank according to claim 1 is characterized in that: The step of determining the relative positional relationship between the piston (13) and the sleeve (11) based on the relationship between the operating height and the cylinder wall height includes: Obtaining the absolute height of the sleeve (11); Determine the corresponding height range of the sleeve (11) in the cabinet (12) based on the absolute height and the position of the bottom of the sleeve (11) in the cabinet (12), wherein the difference between the maximum value and the minimum value of the height range is equal to the height of the cylinder wall; According to the operating height and the height range, it is determined whether the piston (13) operates inside or outside the sleeve (11).

3. The piston drift warning method for a sleeve gas tank according to claim 2 is characterized in that: The step of judging whether the piston (13) is operating inside or outside the sleeve (11) based on the operating height and the height range includes: If the operating height is within the height range, it is determined that the piston (13) is operating inside the sleeve (11); If the operating height is outside the height range, it is determined that the piston (13) is operating outside the sleeve (11).

4. The piston drift warning method for a sleeve gas tank according to claim 3 is characterized in that: The method of providing a drift warning to the piston (13) based on the relative position relationship, the spacing and the drift allowable value includes: If the piston (13) runs inside the sleeve (11), it is determined whether the distance between the piston (13) and the sleeve (11) when the piston (13) runs inside the sleeve (11) is less than a first drift allowable value, and if so, a first drift warning is issued; If the piston (13) runs outside the sleeve (11), it is determined whether the distance between the piston (13) and the sleeve (11) when the piston (13) runs outside the sleeve (11) is less than a second drift allowable value, and if so, a second drift warning is performed; The first drift allowable value is smaller than the second drift allowable value, and the drift allowable value includes the first drift allowable value and the second drift allowable value.

5. The piston drift warning method for a sleeve gas tank according to any one of claims 2 to 4, characterized in that: Also includes: Determining a transition height zone in which the piston (13) operates, wherein a minimum value of the transition height zone is lower than an end portion of the sleeve (11) and a maximum value thereof is higher than an end portion of the sleeve (11), and a total height of the transition height zone is equal to a preset height value; If the operating height is within the transition height zone, the distance when the operating height is within the transition height zone is recorded, and no drift warning is performed.

6. The piston drift warning method for a sleeve gas tank according to any one of claims 1 to 4, characterized in that: The step of obtaining the operating height of the piston (13) and the distance between the edge of the piston (13) and the inner cabinet wall or the inner cylinder wall of the sleeve (11) at the same time includes: Obtaining a real-time height value of the center of the piston (13), and using the real-time height value as the operating height; Obtaining spacing data collected at one or more positions on the edge of the piston (13), and taking the minimum value of the spacing data as the spacing; The time node for obtaining the operating height is the same as the time node for obtaining the spacing.

7. The piston drift warning method for a sleeve gas tank according to any one of claims 1 to 4, characterized in that: Also includes: Generate historical data based on the operating height and the spacing, and the warning record of the drift warning of the piston (13); The historical data is displayed on an operation interface of an operation station (8).

8. A piston drift warning device for a sleeve gas tank, characterized in that: The piston drift warning method of a sleeve gas cabinet according to any one of claims 1 to 7 is applied. The gas cabinet (1) includes a cabinet body (12) and a piston (13) arranged in the cabinet body (12). The cabinet body (12) is sleeved on a sleeve (11) and the height of the sleeve (11) wall does not exceed the height of the inner cabinet wall of the cabinet body (12). Part of the stroke of the piston (13) is located in the sleeve (11). The piston drift warning device of the sleeve gas cabinet includes: A height detection unit (3) is used to detect the operating height of the piston (13) in real time and send it to a control and early warning unit, wherein the operating height is the height of the piston (13) from the bottom wall of the cabinet (12); A distance sensing unit (2) is used to measure the distance between the edge of the piston (13) and the inner cabinet wall or the inner cylinder wall of the sleeve (11) in real time, and send the distance to the control and early warning unit; A control and warning unit is used to obtain the spacing and running height at the same time, and judge the relative position relationship between the piston (13) and the sleeve (11) based on the relationship between the running height and the wall height of the sleeve (11); and to provide a drift warning for the piston (13) based on the relative position relationship, the spacing and the drift allowable value, wherein different relative position relationships correspond to different drift allowable values.

9. The piston drift warning device for a sleeve gas tank according to claim 8, characterized in that: The height detection unit (3) comprises a height detector installed at the top end of the inner wall of the cabinet (12); the control and warning unit comprises a control unit (7) and an operating station (8); the height detection unit (3) and the distance sensing unit (2) are respectively connected to the control unit (7); and the operating station (8) is connected to the control unit (7).

10. The piston drift warning device for a sleeve gas tank according to claim 9, characterized in that: The distance sensing unit (2) includes one or more laser sensors uniformly mounted on the edge of the piston (13), and the laser sensors are respectively connected to the display screen (6) and the control unit (7) via a communication unit (5).

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