A pneumatic butterfly valve energy storage system and a pneumatic butterfly valve control method

Abstract

The application discloses a kind of pneumatic butterfly valve energy storage systems, it is related to pneumatic control technical field, pneumatic butterfly valve energy storage systems include: connect on compressed air main pipeline several groups of energy storage component assembly;Energy storage component assembly includes: energy storage, with compressed air main pipeline intercommunication, pressure sensor for detecting its internal pressure is arranged on energy storage;Several pneumatic butterfly valves, with energy storage intercommunication by compressed air pipe;PLC controller is connected with pressure sensor, several pneumatic butterfly valves respectively.Such setting, when needing multiple pneumatic butterfly valve action, can distribute the pneumatic butterfly valve required action to different groups of energy storage, so that the pressure of energy storage can be avoided excessive pneumatic butterfly valve action and sudden drop, further improve the reliability of pneumatic butterfly valve control system.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pneumatic control, in particular to a pneumatic butterfly valve energy storage system and a pneumatic butterfly valve control method. BACKGROUND

[0002] There are a large number of butterfly valves in the tobacco making workshop, the moisture recovery and the feeding roller type equipment and the sugar room, and the working reliability degree is closely related to the stability and the effective operation rate of the production equipment. According to the data statistics, only the feeding equipment of the leaf segment, the butterfly valve opening device failure occurs several times every year, which will cause the influence on the product production that cannot be ignored, and the effective improvement measures are urgently needed.

[0003] Therefore, how to provide a pneumatic butterfly valve energy storage system and a pneumatic butterfly valve control method to improve the stability of the whole butterfly valve system is a technical problem to be solved by the person skilled in the art at present. SUMMARY

[0004] The present application aims to provide a pneumatic butterfly valve energy storage system and a pneumatic butterfly valve control method to improve the stability of the whole butterfly valve system.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0006] A pneumatic butterfly valve energy storage system, comprising: a plurality of energy storage component groups connected to a compressed air main pipeline;

[0007] The energy storage component group comprises:

[0008] An energy storage device, in communication with the compressed air main pipeline, and a pressure sensor is arranged on the energy storage device for detecting the internal pressure of the energy storage device;

[0009] A plurality of pneumatic butterfly valves, in communication with the energy storage device through a compressed air pipe;

[0010] A PLC controller connected with the pressure sensor and the plurality of pneumatic butterfly valves.

[0011] Preferably, a pressure regulating valve, a filter and a check valve are arranged in sequence along the air outlet direction between the energy storage device and the compressed air main pipeline.

[0012] Preferably, the PLC controller comprises an analog quantity acquisition module and a digital quantity output module, the PLC controller monitors the energy storage device through the analog quantity acquisition module, and the PLC controller controls the actions of the plurality of pneumatic butterfly valves through the digital quantity output module.

[0013] Preferably, the material of the energy storage device is stainless steel, and the volume of the energy storage device is less than 0.025m 3 .

[0014] The application also provides a control method of the pneumatic butterfly valve, which is suitable for the energy storage system of the pneumatic butterfly valve as described above, and the control method comprises the following steps:

[0015] S1, according to the number of the pneumatic butterfly valves required in the process flow, the number of the pneumatic butterfly valves required to act in each energy storage assembly is allocated;

[0016] S2, it is judged whether the allocated pneumatic butterfly valve in each energy storage assembly is completed;

[0017] S3, the action of the allocated and un-acted pneumatic valve body in each energy storage assembly is controlled;

[0018] S4, the steps S2 and S3 are repeated until all the pneumatic butterfly valves required in the process flow are completed.

[0019] As preferred, the step of "according to the number of the pneumatic butterfly valves required in the process flow, the number of the pneumatic butterfly valves required to act in each energy storage assembly is allocated" comprises the following steps:

[0020] The number of the pneumatic butterfly valves required in the process flow is distributed in different groups of energy storage assemblies in sequence until all the pneumatic butterfly valves are completed, and the action sequence of the pneumatic butterfly valves in the process flow is sequentially acted according to the above sequence.

[0021] As preferred, the step of "judging whether the allocated pneumatic butterfly valve in each energy storage assembly is completed" comprises the following steps:

[0022] It is judged whether the pressure in the energy storage to which the pneumatic butterfly valve belongs reaches a preset value, and if not, the PLC controller will issue an alarm information and stop the action of the pneumatic butterfly valve.

[0023] As preferred, the step of "judging whether the pressure in the energy storage to which the pneumatic butterfly valve belongs reaches a preset value, and if not, the PLC controller will issue an alarm information and stop the action of the pneumatic butterfly valve" further comprises the following steps:

[0024] It is judged whether the pneumatic butterfly valve is in action, and if so, the next pneumatic butterfly valve is performed.

[0025] As preferred, if the pneumatic butterfly valve is not in action, it is judged whether the state of the pneumatic butterfly valve at this time is the same as the action instruction of the pneumatic butterfly valve, and if the state of the pneumatic butterfly valve feedback is the same as the state of the action instruction, the action of the next pneumatic butterfly valve is performed.

[0026] As preferred, the step of "judging whether the state of the pneumatic butterfly valve at this time is the same as the action instruction of the pneumatic butterfly valve" further comprises the following steps:

[0027] If the state fed back by the pneumatic butterfly valve is different from the state of the action instruction, the pneumatic butterfly valve is controlled by the PLC controller to act according to the action instruction.

[0028] With respect to the above background art, the pneumatic butterfly valve energy storage system provided by the present application comprises: a plurality of groups of energy storage components connected to the compressed air main pipeline; the energy storage component comprises: an energy storage device in communication with the compressed air main pipeline, and a pressure sensor arranged on the energy storage device for detecting the internal pressure thereof; a plurality of pneumatic butterfly valves in communication with the energy storage device through a compressed air pipe; and a PLC controller connected with the pressure sensor and the plurality of pneumatic butterfly valves.

[0029] Specifically, the pressure stored in the energy storage device can be supplemented by the compressed air main pipeline, each energy storage device can be connected to a plurality of pneumatic butterfly valves, and the plurality of pneumatic butterfly valves are uniformly dispatched by the PLC controller. The PLC controller is connected with the energy storage device through the pressure sensor, thereby monitoring the state of the energy storage device in real time. The energy storage component has simple structure, convenient installation, wide application range, safety and reliability, good adaptability to working environment, and can effectively improve the abnormal action of the pneumatic butterfly valve caused by the decrease of the compressed air pressure, and has high practical value. Further, in order to prevent the plurality of pneumatic butterfly valves belonging to one energy storage device from acting simultaneously to cause the pressure of the energy storage device to decrease sharply, thereby affecting the stability of the pneumatic butterfly valve control system, a plurality of groups of energy storage components are connected to the compressed air main pipeline. In this way, when a plurality of pneumatic butterfly valves need to act, the pneumatic butterfly valves needed to act can be distributed to different groups of energy storage devices, so that the decrease of the pressure of the energy storage device caused by too many pneumatic butterfly valves acting can be avoided, and the reliability of the pneumatic butterfly valve control system is further improved. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the provided drawings.

[0031] Figure 1 The energy storage component structure schematic diagram provided by the embodiments of the present application;

[0032] Figure 2 The pneumatic butterfly valve energy storage system structure schematic diagram provided by the embodiments of the present application;

[0033] Figure 3 The pneumatic butterfly valve control method task table provided by the embodiments of the present application;

[0034] Figure 4 The pneumatic butterfly valve control method flow chart provided by the embodiments of the present application;

[0035] Figure 5 The specific flow structure diagram of the control method of the pneumatic butterfly valve provided by the embodiment of the present application is shown in the figure.

[0036] Among them:

[0037] 01-compressed air main pipeline, 02-energy storage device, 03-pressure sensor, 04-pneumatic butterfly valve, 05-compressed air pipe, 06-PLC controller, 07-pressure regulating valve, 08-filter, 09-check valve, 10-analog quantity acquisition module, 11-digital quantity output module. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0039] In order to make the person skilled in the art better understand the present application, the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0040] The purpose of the present application is to provide a pneumatic butterfly valve energy storage system and a control method of the pneumatic butterfly valve, so as to improve the stability of the whole butterfly valve system.

[0041] In order to achieve the above purpose, the present application provides the following technical solutions:

[0042] Please refer to Figure 1 and Figure 2 The embodiment provided by the present application is a kind of pneumatic butterfly valve 04 energy storage system, comprising: a plurality of groups of energy storage device components connected to compressed air main pipeline 01;Energy storage device component includes: energy storage device 02, with compressed air main pipeline 01 communication, energy storage device 02 is provided with pressure sensor 03 for detecting its internal pressure;A plurality of pneumatic butterfly valves 04, which are communicated with the energy storage device 02 through the compressed air pipe 05;PLC controller 06 is connected with pressure sensor 03, a plurality of pneumatic butterfly valves 04 respectively.

[0043] Specifically, in the embodiment, each energy storage assembly includes one energy storage device 02 and four pneumatic butterfly valves 04, and the inlet pipe of the energy storage device 02 connected with the compressed air main pipeline 01 can have four specifications of Φ16 mm, Φ12 mm, Φ10 mm and Φ8 mm. Similarly, by configuring different specifications of the outlet joint, the outlet pipe, i.e., the compressed air pipe 05, can be applicable to three different specifications of Φ10 mm, Φ8 mm and Φ6 mm to adapt to the air supply requirements of different types of butterfly valves. The energy storage device 02 is provided with a pressure sensor 03, which can convert the pressure of 0-1 MPa into a current signal of 4-20 mA and input the PLC controller 06. The PLC controller 06 in the embodiment can control the action of the pneumatic butterfly valve 04 by monitoring the pressure state in the energy storage device 02 in real time.

[0044] The pressure stored in the energy storage device 02 can be supplemented by the compressed air main pipeline 01. Each energy storage device 02 can be connected with several pneumatic butterfly valves 04, and the pneumatic butterfly valves 04 are uniformly dispatched by the PLC controller 06. The PLC controller 06 is connected with the energy storage device 02 through the pressure sensor 03 to monitor the state of the energy storage device 02 in real time. The energy storage assembly has the advantages of simple structure, convenient installation, wide application range, safety and reliability, good adaptability to working environment, and can effectively improve the abnormal action of the pneumatic butterfly valve 04 caused by the decrease of the compressed air pressure, and has high practical value. Further, in order to prevent the simultaneous action of the plurality of pneumatic butterfly valves 04 belonging to one energy storage device 02 from causing the pressure of the energy storage device 02 to decrease suddenly and thus affecting the stability of the pneumatic butterfly valve 04 control system, a plurality of energy storage assemblies are connected with the compressed air main pipeline 01. In this way, when a plurality of pneumatic butterfly valves 04 need to act, the pneumatic butterfly valves 04 needed to act can be distributed to different groups of energy storage devices 02, so that the sudden decrease of the pressure of the energy storage device 02 caused by too many pneumatic butterfly valves 04 acting can be avoided, and the reliability of the pneumatic butterfly valve 04 control system is further improved.

[0045] In the embodiment, the pressure regulating valve 07, the filter 08 and the check valve 09 are sequentially arranged between the energy storage device 02 and the compressed air main pipeline 01 in the outlet direction.

[0046] On the basis of the above embodiment, the PLC controller 06 includes an analog quantity acquisition module 10 and a digital quantity output module 11. The PLC controller 06 monitors the energy storage device 02 through the analog quantity acquisition module 10, and controls the action of the plurality of pneumatic butterfly valves 04 through the digital quantity output module 11.

[0047] The PLC controller 06 can realize real-time monitoring and control according to the pressure signal collected by the analog quantity collection module 10. In the present example, the pressure required for the action of the pneumatic butterfly valve 04 is 0.5 MPa. The operator can adjust the pressure air inlet to 0.6 MPa through the pressure regulating valve 07, and the PLC controller 06 can monitor the pressure in the energy accumulator 02 in real time to provide graphical interface display in the form of numerical value and column chart. When the pressure in the energy accumulator 02 is lower than the set value (the set value can be adjusted, and in the present example, the set value is 0.5 MPa), the PLC controller 06 will prompt an alarm information to remind the maintenance personnel to check.

[0048] The digital quantity output module 11 of the PLC controller 06 controls the opening and closing action of the butterfly valve. Before the action, the PLC controller 06 needs to determine that the pressure in the energy accumulator 02 is higher than the set value. If the condition is not met, the action of the pneumatic butterfly valve 04 will be locked to avoid the occurrence of the action timeout of the pneumatic butterfly valve 04.

[0049] On the basis of the above-mentioned embodiment, the material of the energy accumulator 02 is stainless steel, and the volume of the energy accumulator 02 is less than 0.025 m 3 .

[0050] Specifically, the energy accumulator 02 in the present embodiment is made of 3 mm 304 stainless steel material, and has a size of 100*200*200 mm cubic, a gas storage capacity of 0.004 m 3 , and satisfies more than twice the total amount of gas supplied to the butterfly valve. The size of the energy accumulator 02 can be adjusted according to the site conditions and the number of pneumatic butterfly valves 04, but the volume needs to be ensured to be less than 0.025 m 3 .

[0051] The present application also provides a control method of the pneumatic butterfly valve 04, which is suitable for the energy storage system of the pneumatic butterfly valve 04 as described above. The control method comprises:

[0052] S1, according to the number of pneumatic butterfly valves 04 required in the process flow, the number of pneumatic butterfly valves 04 required to act in each energy accumulator assembly is allocated;

[0053] S2, determining whether the allocated pneumatic butterfly valves 04 in each energy accumulator assembly complete the action;

[0054] S3, controlling the action of the allocated and unacted pneumatic valve body in each energy accumulator assembly;

[0055] S4, repeating steps S2 and S3 until all the pneumatic butterfly valves 04 required in the process flow complete the action.

[0056] In this embodiment, the pressure sensor 03 in each energy storage unit monitors the internal pressure of its respective energy storage unit 02 and transmits the electronic signal to the PLC controller 06. The PLC controller 06 then controls the pneumatic butterfly valve 04 to operate via the digital output module 11. In this embodiment, the logic control process of the PLC controller 06 adopts a task list format, specifically as follows: Figure 3 As shown; the specific steps of the control method are as follows:

[0057] Firstly, when multiple butterfly valves operate simultaneously, the pressure inside the accumulator 02 may drop sharply, which would affect the operation of the pneumatic butterfly valve 04. Therefore, in this embodiment, multiple sets of accumulator assemblies are connected to the compressed air main line 01. Specifically, taking this embodiment as an example, four sets of accumulator assemblies are connected to the compressed air main line 01, and four pneumatic butterfly valves 04 are connected to each set of accumulator assemblies, as shown in Figure 2. In this embodiment, multiple pneumatic butterfly valves 04 need to operate in each process flow. Therefore, in order to ensure that the number of pneumatic butterfly valves 04 under each accumulator 02 is approximately the same, the total number of pneumatic butterfly valves 04 required to operate in this process flow is evenly distributed among the four sets of accumulator assemblies.

[0058] Specifically, taking the process flow requiring five pneumatic butterfly valves 04 to operate as an example, in this embodiment, since four sets of energy storage components are set, one set of energy storage components requires two pneumatic butterfly valves 04 to operate. The specific allocation method is as follows: Figure 2 When the pneumatic butterfly valves 04Y1~Y5 in the middle are activated, the assigned information will be written into the task table, as shown in the following details. Figure 3 As shown, the table includes the number of each pneumatic butterfly valve 04, the action command to be completed, the number of the energy storage device 02 to which it belongs, and the butterfly valve action status of whether the pneumatic butterfly valve 04 finally completes the action in subsequent steps.

[0059] After the task list is completed, the action of each pneumatic butterfly valve 04 needs to be executed item by item. First, it is determined whether the current state of the pneumatic butterfly valve 04 in the information is the same as the action command. If they are different, the next step is to control the pneumatic butterfly valve 04 to complete the corresponding action. After completion, the completed action will be written into the butterfly valve action status in the task list. Then, the next action in the task list is continued, and the above steps are repeated in sequence until all pneumatic butterfly valves 04 in the task list of the process flow have completed their actions.

[0060] As a preferred embodiment, the step of "allocating the number of pneumatic butterfly valves 04 required to be activated in each group of energy storage components according to the number of pneumatic butterfly valves 04 required in the process flow" includes:

[0061] The number of pneumatic butterfly valves 04 required in the process flow is sequentially distributed in different groups of energy storage assemblies until all the pneumatic butterfly valves 04 complete the distribution, and the action sequence of the pneumatic butterfly valves 04 in the process flow sequentially acts according to the above sequence.

[0062] In the present embodiment, as shown in Figure 2 When five pneumatic butterfly valves 04 need to act, Y1-Y5 in the pneumatic butterfly valves 04 act, and the action sequence of the pneumatic butterfly valves 04 in the task table is also Y1-Y5, but the information scanning speed of the PLC controller 06 in the present embodiment is faster, which does not affect the use effect in actual production.

[0063] On the basis of the above embodiment, the step of "judging whether the distributed pneumatic butterfly valves 04 in each group of energy storage assemblies complete the action" includes:

[0064] Judging whether the pressure in the energy storage assembly 02 to which the pneumatic butterfly valve 04 belongs reaches a preset value, if not, the PLC controller 06 will issue an alarm information and stop the action of the pneumatic butterfly valve 04.

[0065] In the present embodiment, the first step in judging whether the distributed pneumatic butterfly valves 04 in each group of energy storage assemblies complete the action is to judge whether the pressure in the energy storage assembly 02 to which the pneumatic butterfly valve 04 belongs reaches a preset value, that is, whether the internal pressure of the energy storage assembly 02 meets the action requirement of the pneumatic butterfly valve 04, Figure 3 The "energy storage assembly 02 pressure information" in the task is determined by the feedback value of the pressure sensor 03, in the present example, the pressure on the air supply side is 6.5bar, and the lowest pressure required for the butterfly valve action is 5bar through experimental test, therefore we set the normal pressure value range as greater than or equal to 5.1bar, when the pressure is lower than this lower limit value, the PLC controller 06 will display an alarm prompt information of "XX number energy storage assembly 02 air pressure is low", at the same time, the butterfly valve action under the energy storage assembly 02 will be temporarily suspended, and wait for the energy storage assembly 02 to be re-acted after being re-pressurized.

[0066] Of course, in the present embodiment, the above steps will be based on the valve number of the task table to query the action of the pneumatic butterfly valve 04, the state of the pneumatic butterfly valve 04 is determined by the position sensor on the pneumatic butterfly valve 04, the pneumatic butterfly valve 04 has one position sensor for detecting each of the "open" and "closed" positions, when the pneumatic butterfly valve 04 is in the "open" position, the feedback signal of the "open" position is "1", when the pneumatic butterfly valve 04 is in the "closed" position, the feedback signal of the "closed" position is "0", when the pneumatic butterfly valve 04 is in the action process, there is no detection signal in the "open" and "closed" position sensors, at this time, it can be determined that the butterfly valve is in the "intermediate position", that is, in the action process; before each pneumatic butterfly valve 04 acts, the first information will be obtained according to the sequence in the butterfly valve working task table,Figure 3 In the task table, in a top-down order, the first step is to query the "butterfly valve action condition" of the Y1 valve. If the condition is "actioned" or "in action", the next step is to judge the next line of information. If the condition is "not actioned", the next step is to judge whether the pressure in the energy storage device 02 reaches the preset value.

[0067] On the basis of the above embodiment, the step of "judging whether the pressure in the energy storage device 02 to which the pneumatic butterfly valve 04 belongs reaches the preset value, and if not, the PLC controller 06 will issue an alarm information and stop the action of the pneumatic butterfly valve 04" further includes:

[0068] judging whether the pneumatic butterfly valve 04 is in action, and if so, the next pneumatic butterfly valve 04 is executed.

[0069] When the pressure in the energy storage device 02 is greater than the preset value, but the pneumatic butterfly valve 04 is in action, the PLC will temporarily suspend the action of the pneumatic butterfly valve 04, and execute the action of the next pneumatic butterfly valve 04 in the task table, until all the actions of the pneumatic butterfly valves 04 in the process flow are completed, and then the action of the suspended pneumatic butterfly valve 04 is executed again.

[0070] On the basis of the above embodiment, if the pneumatic butterfly valve 04 is not in action, it is judged whether the state of the pneumatic butterfly valve 04 at this time is the same as the action instruction of the pneumatic butterfly valve 04. If the state of the pneumatic butterfly valve 04 is the same as the state of the action instruction, the action of the next pneumatic butterfly valve 04 is executed.

[0071] When the pressure in the energy storage device 02 is greater than the preset value, and the pneumatic butterfly valve 04 is not in action, first, it is queried whether the action instruction is to open or close, and then the action of the action instruction is compared with the action condition of the pneumatic butterfly valve 04 at this time. If they are the same, the butterfly valve action condition of the pneumatic butterfly valve 04 in the task table is marked as "actioned".

[0072] On the basis of the above embodiment, the step of "judging whether the state of the pneumatic butterfly valve 04 at this time is the same as the action instruction of the pneumatic butterfly valve 04" further includes:

[0073] If the state of the pneumatic butterfly valve 04 is different from the state of the action instruction, the PLC controller 06 controls the pneumatic butterfly valve 04 to act according to the action instruction.

[0074] When the action of the action instruction is different from the action condition of the pneumatic butterfly valve 04 at this time, the PLC controller 06 controls the pneumatic butterfly valve 04 to act according to the action instruction, and if the pneumatic butterfly valve 04 does not complete the corresponding action within the timing time, the PLC controller 06 issues an alarm information to prompt the staff to check.

[0075] When the action of one pneumatic butterfly valve 04 in the task table is completed, if there are other pneumatic butterfly valves 04 in the task table that have not completed the action, a new task information will be started to control the action of the next pneumatic butterfly valve 04.

[0076] In summary, the present application provides a control method of the pneumatic butterfly valve 04, and the specific steps are as follows: Figure 4 and Figure 5 In summary, the present application provides a control method of the pneumatic butterfly valve 04, and the specific steps are as follows:

[0077] According to the number of actions of the pneumatic butterfly valve 04 required in the process flow, the tasks of each group of energy storage components are allocated, and the current task is written into the task table;

[0078] The first task information in the task table is obtained, that is, the action instruction of the first pneumatic butterfly valve 04 that needs to act, the energy storage device 02 information belonging to it, and the state of the pneumatic butterfly valve 04 at this time;

[0079] The pressure signal of the energy storage device 02 belonging to the pneumatic butterfly valve 04 is collected through the pressure sensor 03, and then it is judged whether the internal pressure of the energy storage device 02 is greater than the preset value. If the pressure is insufficient, the pneumatic butterfly valve 04 will be temporarily suspended, the energy storage device 02 will be recharged, and the next cycle will be waited. If the pressure meets the standard, the following steps will be continued;

[0080] Whether the pneumatic butterfly valve 04 is in action is judged through the sensor on the pneumatic butterfly valve 04. If it is, the pneumatic butterfly valve 04 will be temporarily suspended, and the next cycle will be waited. If it is not in action, the following steps will be continued;

[0081] The action instruction of the pneumatic butterfly valve 04 is inquired, and it is judged whether the action of the action instruction is the same as the action of the pneumatic butterfly valve 04 at this time. Specifically, if the action instruction is opening, and the pneumatic butterfly valve 04 feeds back that it is in the opening state at this time, it is marked as having been acted in the butterfly valve action situation in the task table. If the pneumatic butterfly valve 04 feeds back that it is in the closing state at this time, the next step will be performed. If the action instruction is closing, and the pneumatic butterfly valve 04 feeds back that it is in the closing state at this time, it is marked as having been acted in the butterfly valve action situation in the task table. If the pneumatic butterfly valve 04 feeds back that it is in the opening state at this time, the next step will be performed;

[0082] The pneumatic butterfly valve 04 whose action is different from the action instruction is controlled to act, and timing is performed;

[0083] If the pneumatic butterfly valve 04 does not complete the action according to the action instruction within the timing time, an alarm information will be output, and the operator will be prompted to check. If the action instruction action is completed within the specified time, the next step will be performed;

[0084] If the butterfly valve action condition in the task table is not marked as having been acted, the information in the task table is acquired in a loop, and the action is restarted. Of course, the information acquired at this time is the next information in the next task table. If the information in the task table is all marked as having been completed, the device is prompted to enter the next process flow. In addition, if the butterfly valve action condition is marked as having been acted when the information in the task table is queried in the loop, the intermediate steps are directly skipped, and the acquisition of the next information in the task table is restarted.

[0085] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one entity from another entity, without necessarily requiring or implying any actual relationship or order between such entities.

[0086] The embodiments in the specification are described in a progressive manner, and each embodiment focuses on the difference from other embodiments. The same or similar parts between the embodiments can be mutually referred to.

[0087] The above provides a detailed description of the embodiments of the present application. The principles and implementation modes of the present application are described by applying specific examples. The above description of the embodiments is only used to help understand the method of the present application and its core idea. It should be pointed out that, for those skilled in the art, without departing from the principles of the present application, the present application can be improved and modified in several ways, and these improvements and modifications also fall within the protection scope of the claims of the present application.

Claims

1. A method of controlling a pneumatic butterfly valve, characterized by, The application relates to a pneumatic butterfly valve energy storage system, which comprises a plurality of energy storage component groups connected to a compressed air main pipeline. The energy storage component group comprises: an energy storage device in communication with the compressed air main pipeline, wherein a pressure sensor is arranged on the energy storage device to detect the internal pressure of the energy storage device; a plurality of pneumatic butterfly valves in communication with the energy storage device through compressed air pipes; a PLC controller connected to the pressure sensor and the plurality of pneumatic butterfly valves; a pressure regulating valve, a filter and a check valve are sequentially arranged between the energy storage device and the compressed air main pipeline in the air outlet direction; the PLC controller comprises an analog quantity acquisition module and a digital quantity output module, wherein the PLC controller monitors the energy storage device through the analog quantity acquisition module, and the PLC controller controls the actions of the plurality of pneumatic butterfly valves through the digital quantity output module; The energy storage equipment material is stainless steel, and the volume of the energy storage equipment is less than 0.025 m 3 ; the control method comprises: S1. According to the number of pneumatic butterfly valves required in a process flow, the number of the pneumatic butterfly valves required to act in each energy storage component group is allocated; S2. It is judged whether the allocated pneumatic butterfly valves in each energy storage component group complete the action; S3. The action of the allocated pneumatic butterfly valves which have not acted in each energy storage component group is controlled; S4. Steps S2 and S3 are repeatedly circulated until all the pneumatic butterfly valves required in the process flow complete the action; the step of "allocating the number of the pneumatic butterfly valves required to act in each energy storage component group according to the number of pneumatic butterfly valves required in a process flow" comprises: the number of the pneumatic butterfly valves required in the process flow is sequentially distributed in different energy storage component groups until all the pneumatic butterfly valves are allocated, and the action sequence of the pneumatic butterfly valves in the process flow acts in sequence according to the above sequence.

2. The method of claim 1, wherein, the step of "judging whether the allocated pneumatic butterfly valves in each energy storage component group complete the action" comprises: it is judged whether the pressure in the energy storage device to which the pneumatic butterfly valve belongs reaches a preset value, and if the preset value is not reached, the PLC controller will issue an alarm information and stop the action of the pneumatic butterfly valve.

3. The method of claim 2, wherein, the step of "judging whether the pressure in the energy storage device to which the pneumatic butterfly valve belongs reaches a preset value, and if the preset value is not reached, the PLC controller will issue an alarm information and stop the action of the pneumatic butterfly valve" further comprises: it is judged whether the pneumatic butterfly valve is in action, and if the pneumatic butterfly valve is in action, the next pneumatic butterfly valve is performed.

4. The method of claim 3, wherein, if the pneumatic butterfly valve is not in action, it is judged whether the state of the pneumatic butterfly valve at this time is the same as the action instruction of the pneumatic butterfly valve, and if the state of the pneumatic butterfly valve feedback is the same as the state of the action instruction, the action of the next pneumatic butterfly valve is performed.

5. The method of claim 4, wherein, the step of "judging whether the state of the pneumatic butterfly valve at this time is the same as the action instruction of the pneumatic butterfly valve" further comprises: if the state of the pneumatic butterfly valve feedback is different from the state of the action instruction, the pneumatic butterfly valve is controlled to act according to the action instruction through the PLC controller.

Images