Pneumatic butterfly valve energy storage system and pneumatic butterfly valve control method

Abstract

The invention discloses a pneumatic butterfly valve energy storage system, and relates to the technical field of pneumatic control, the pneumatic butterfly valve energy storage system comprises a plurality of groups of energy storage device assemblies connected to a compressed air main pipeline; the energy storage device assembly comprises an energy storage device which is communicated with the compressed air main pipeline and provided with a pressure sensor used for detecting the internal pressure of the energy storage device; the pneumatic butterfly valves are communicated with the energy storage device through compressed air pipes; and the PLC is respectively connected with the pressure sensor and the plurality of pneumatic butterfly valves. According to the arrangement, when a plurality of pneumatic butterfly valves need to act, the pneumatic butterfly valves needing to act can be distributed to different groups of energy accumulators, so that sudden pressure drop of the energy accumulators caused by excessive actions of the pneumatic butterfly valves can be avoided, and the reliability of the pneumatic butterfly valve control system is further improved.

Description

Technical Field

[0001] The present invention relates to the field of pneumatic control technology, and in particular to a pneumatic butterfly valve energy storage system and a pneumatic butterfly valve control method. Background Art

[0002] There are a large number of butterfly valves in the tobacco production workshop, feeding roller equipment and sugar room. The reliability of their operation is closely related to the stability and effective operation rate of production equipment. According to statistics, there are many butterfly valve opening equipment failures in the blade segment feeding equipment alone every year, which will have a significant impact on product production and 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 entire butterfly valve system is a technical problem that technical personnel in this field currently need to solve. Summary of the invention

[0004] The object of the present invention is to provide a pneumatic butterfly valve energy storage system and a pneumatic butterfly valve control method to improve the stability of the entire butterfly valve system.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A pneumatic butterfly valve energy storage system comprises: a plurality of energy storage device assemblies connected to a compressed air main line;

[0007] The energy storage assembly includes:

[0008] The accumulator is connected to the compressed air main line, and a pressure sensor for detecting the internal pressure of the accumulator is provided on the accumulator;

[0009] Several pneumatic butterfly valves are connected to the energy accumulator through compressed air pipes;

[0010] The PLC controller is connected with the pressure sensor and a plurality of pneumatic butterfly valves respectively.

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

[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 controls the actions of several pneumatic butterfly valves through the digital quantity output module.

[0013] As a preferred embodiment, 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 present invention also provides a pneumatic butterfly valve control method, which is applicable to the pneumatic butterfly valve energy storage system as described above, and the control method includes:

[0015] S1, according to the number of pneumatic butterfly valves required in the process flow, the number of pneumatic butterfly valves required to be actuated in each group of accumulator components is allocated;

[0016] S2, determining whether the assigned pneumatic butterfly valve in each group of energy storage components has completed the action;

[0017] S3, controlling the movement of the pneumatic valve bodies allocated and not moved in each group of energy storage components;

[0018] S4, repeating steps S2 and S3 in a loop until all the pneumatic butterfly valves required in the process flow have completed their actions.

[0019] As a preferred step, "allocating the number of pneumatic butterfly valves required to be actuated in each group of accumulator assemblies according to the number of pneumatic butterfly valves required in the process flow" includes:

[0020] The number of pneumatic butterfly valves required in the process flow is distributed in sequence to different groups of accumulator components until all the pneumatic butterfly valves are distributed, and the action sequence of the pneumatic butterfly valves in the process flow is in accordance with the above sequence.

[0021] Preferably, the step of "determining whether the allocated pneumatic butterfly valve in each group of energy storage components has completed the action" includes:

[0022] It is determined whether the pressure in the energy storage device to which the pneumatic butterfly valve belongs reaches a preset value. If it does not reach the preset value, the PLC controller will issue an alarm message and stop the action of the pneumatic butterfly valve.

[0023] As a preferred method, after the step of "determining whether the pressure in the energy storage device to which the pneumatic butterfly valve belongs reaches a preset value, if the preset value is not reached, the PLC controller will issue an alarm message and stop the action of the pneumatic butterfly valve" further includes:

[0024] Determine whether the pneumatic butterfly valve is in action, and if so, proceed to the next pneumatic butterfly valve.

[0025] Preferably, if the pneumatic butterfly valve is not in action, determine whether the current state of the pneumatic butterfly valve is the same as the action instruction of the pneumatic butterfly valve. If the state fed back by the pneumatic butterfly valve is the same as the state of the action instruction, perform the next pneumatic butterfly valve action.

[0026] As a preferred method, after the step of "determining whether the state of the pneumatic butterfly valve at this time is the same as the action instruction of the pneumatic butterfly valve", the following steps are further included:

[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-mentioned background technology, a pneumatic butterfly valve energy storage system provided by the present invention comprises: a plurality of energy storage device assemblies connected to the compressed air main line; the energy storage device assemblies comprise: an energy storage device connected to the compressed air main line, the energy storage device being provided with a pressure sensor for detecting its internal pressure; a plurality of pneumatic butterfly valves connected to the energy storage device through a compressed air pipe; and a PLC controller connected to the pressure sensor and the plurality of pneumatic butterfly valves respectively.

[0029] Specifically, the pressure stored in the energy accumulator can be supplemented by the compressed air main line. Each energy accumulator can be connected to a number of pneumatic butterfly valves, and these pneumatic butterfly valves are uniformly allocated by the PLC controller. The PLC controller is connected to the energy accumulator through a pressure sensor to monitor the status of the energy accumulator in real time. The energy accumulator component has a simple structure, is easy to install, has a wide range of applications, is safe and reliable, has good adaptability to the working environment, can effectively improve the abnormal operation of the pneumatic butterfly valve caused by the decrease in compressed air pressure, and has high practical value; further, in order to prevent multiple pneumatic butterfly valves belonging to an energy accumulator from being actuated at the same time, causing a sudden drop in the pressure of the energy accumulator, thereby affecting the stability of the pneumatic butterfly valve control system, several groups of energy storage components are connected to the compressed air main line. In this way, when multiple pneumatic butterfly valves need to be actuated, the pneumatic butterfly valves required to be actuated can be allocated to different groups of energy accumulators, so that too many pneumatic butterfly valves can be actuated to cause a sudden drop in the pressure of the energy accumulator, further improving the reliability of the pneumatic butterfly valve control system. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0031] FIG1 is a schematic diagram of the structure of an energy storage assembly provided by an embodiment of the present invention;

[0032] FIG2 is a schematic diagram of the structure of a pneumatic butterfly valve energy storage system provided in an embodiment of the present invention;

[0033] FIG3 is a task table of a pneumatic butterfly valve control method provided by an embodiment of the present invention;

[0034] FIG4 is a flow chart of a pneumatic butterfly valve control method provided by an embodiment of the present invention;

[0035] FIG. 5 is a specific flow chart of the pneumatic butterfly valve control method provided in an embodiment of the present invention.

[0036] in:

[0037] 01- compressed air main line, 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 following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] In order to enable those skilled in the art to better understand the scheme of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0040] The object of the present invention is to provide a pneumatic butterfly valve energy storage system and a pneumatic butterfly valve control method to improve the stability of the entire butterfly valve system.

[0041] To achieve the above object, the present invention provides the following technical solutions:

[0042] Please refer to Figures 1 and 2. This embodiment provides a pneumatic butterfly valve 04 energy storage system, including: a plurality of energy storage device assemblies connected to the compressed air main line 01; the energy storage device assemblies include: an energy storage device 02, which is connected to the compressed air main line 01, and the energy storage device 02 is provided with a pressure sensor 03 for detecting its internal pressure; a plurality of pneumatic butterfly valves 04, which are connected to the energy storage device 02 through a compressed air pipe 05; and a PLC controller 06, which is respectively connected to the pressure sensor 03 and the plurality of pneumatic butterfly valves 04.

[0043] Specifically, in the present embodiment, each group of energy accumulator components includes an energy accumulator 02 and four pneumatic butterfly valves 04, and the air inlet pipe connecting the energy accumulator 02 and the compressed air main line 01 can have four specifications of Φ16mm, Φ12mm, Φ10mm, and Φ8mm. Similarly, by configuring air outlet connectors of different specifications, the air outlet pipe, i.e., the compressed air pipe 05, can be suitable for three different specifications of Φ10mm, Φ8mm, and Φ6mm to meet the air supply requirements of different types of butterfly valves; a pressure sensor 03 is installed on the energy accumulator 02, which can convert the pressure of 0-1MPa into a current signal of 4~20mA and input it into the PLC controller 06. The PLC controller 06 in the present embodiment can monitor the internal pressure state of the energy accumulator 02 in real time, and then control the action of the pneumatic butterfly valve 04.

[0044] The pressure stored in the accumulator 02 can be supplemented by the compressed air main line 01. Each accumulator 02 can be connected to a number of pneumatic butterfly valves 04, and these pneumatic butterfly valves 04 are uniformly deployed by the PLC controller 06. The PLC controller 06 is connected to the accumulator 02 through the pressure sensor 03, so as to monitor the status of the accumulator 02 in real time. The accumulator component has a simple structure, convenient installation, a wide range of applications, safety and reliability, good adaptability to the working environment, and can effectively improve the abnormal operation of the pneumatic butterfly valve 04 caused by the decrease in compressed air pressure. High practical value; further, in order to prevent multiple pneumatic butterfly valves 04 belonging to an energy accumulator 02 from being actuated at the same time, causing a sudden drop in the pressure of the energy accumulator 02, thereby affecting the stability of the pneumatic butterfly valve 04 control system, several groups of energy storage components are connected to the compressed air main line 01. In this way, when multiple pneumatic butterfly valves 04 need to be actuated, the pneumatic butterfly valves 04 that need to be actuated can be allocated to different groups of energy accumulators 02. In this way, excessive actuation of pneumatic butterfly valves 04 can be avoided to cause a sudden drop in the pressure of the energy accumulator 02, further improving the reliability of the pneumatic butterfly valve 04 control system.

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

[0046] Based on 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 actions of several 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 acquisition module 10. In this example, the pressure required for the action of the pneumatic butterfly valve 04 is 0.5MPa. The operator can adjust the compressed air intake to 0.6Mpa through the pressure regulating valve 07. At the same time, the PLC controller 06 monitors the pressure in the energy accumulator 02 in real time, and provides a graphical interface display with numerical values ​​and bar graphs. When the pressure in the energy accumulator 02 is lower than the set value (the set value is adjustable, and it is set to 0.5Mpa in this example), the PLC controller 06 will prompt an alarm message to remind the maintenance personnel to check.

[0048] The digital output module 11 of the PLC controller 06 controls the butterfly valve to open and close. Before the action, the PLC controller 06 needs to determine whether the pressure in the energy storage device 02 is higher than the set value. If this condition is not met, the action of the pneumatic butterfly valve 04 will be locked to avoid the occurrence of a timeout for the pneumatic butterfly valve 04.

[0049] Based on the above embodiment, the material of the energy storage device 02 is specifically stainless steel, and the volume of the energy storage device 02 is less than 0.025m 3 .

[0050] Specifically, the energy storage device 02 in this embodiment is made of 3mm 304 stainless steel, with a size of 100×200×200mm cube, and a gas storage capacity of 0.004m 3 , which can meet the needs of more than twice the total amount of air used by the butterfly valves. The size of the accumulator 02 can be adjusted according to the site conditions and the number of pneumatic butterfly valves 04, but the volume must be less than 0.025m 3 .

[0051] The present invention also provides a pneumatic butterfly valve 04 control method, which is applicable to the pneumatic butterfly valve 04 energy storage system as described above, and the control method includes:

[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 be actuated in each group of accumulator components is allocated;

[0053] S2, judging whether the assigned pneumatic butterfly valve 04 in each group of energy storage components has completed the action;

[0054] S3, controlling the movement of the pneumatic valve bodies allocated and not moved in each group of energy storage components;

[0055] S4, repeat steps S2 and S3 in a loop until all the pneumatic butterfly valves 04 required in the process flow have completed their actions.

[0056] In this embodiment, the pressure sensor 03 in each group of energy storage components monitors the internal pressure in the energy storage 02 to which it belongs, and transmits the electronic signal to the PLC controller 06, and then the PLC controller 06 controls the action of the pneumatic butterfly valve 04 through the digital output module 11. In this embodiment, the logical control process of the PLC controller 06 adopts the form of a task table, as shown in Figure 3; the specific steps of the control method are as follows:

[0057] First, when multiple butterfly valves are actuated at the same time, the pressure in the accumulator 02 may drop sharply, which will affect the action of the pneumatic butterfly valve 04. Therefore, in this embodiment, multiple groups of accumulator assemblies are connected to the compressed air main line 01. Specifically, taking this embodiment as an example, 4 groups of accumulator assemblies are connected to the compressed air main line 01, and each group of accumulator assemblies is connected to 4 pneumatic butterfly valves 04, as shown in Figure 2. In this embodiment, multiple pneumatic butterfly valves 04 need to be actuated in each process flow. Therefore, in order to make the number of pneumatic butterfly valves 04 under each accumulator 02 roughly the same, the total number of pneumatic butterfly valves 04 required to actuate in the process flow is evenly distributed to the four groups of accumulator assemblies as much as possible.

[0058] Specifically, taking the process flow requiring the action of five pneumatic butterfly valves 04 as an example, in this embodiment, since four groups of energy storage components are set, one group of energy storage components needs to have two pneumatic butterfly valves 04 action, and the specific allocation method is the action of the pneumatic butterfly valves 04Y1~Y5 in Figure 2. At the same time, the allocated information will be written into the task table, as shown in Figure 3. The table includes the number of each pneumatic butterfly valve 04, the action instruction 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 the subsequent steps.

[0059] After the above task list is completed, it is necessary to execute the action of each pneumatic butterfly valve 04 according to the item. The first step is to determine whether the current state of the pneumatic butterfly valve 04 in the information is the same as the action of the action instruction. If different, the next step will be carried out, which is to control the pneumatic butterfly valve 04 to complete the corresponding action. After completion, the completed action will be written in the butterfly valve action case in the task list, and then continue to the next action in the task list, and repeat the above steps in sequence until all pneumatic butterfly valves 04 in the task list of the process flow have completed their actions.

[0060] As a preferred step, "allocating the number of pneumatic butterfly valves 04 required to be actuated in each group of accumulator 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 distributed to different groups of energy storage components in sequence until all the pneumatic butterfly valves 04 are distributed, and the action sequence of the pneumatic butterfly valves 04 in the process flow is in accordance with the above sequence.

[0062] In this embodiment, as shown in Figure 2, when five pneumatic butterfly valves 04 need to be actuated, Y1~Y5 of the pneumatic butterfly valves 04 are actuated, and in the task table, the action sequence of the pneumatic butterfly valves 04 is also performed according to Y1~Y5, but the information scanning speed of the PLC controller 06 in this embodiment is relatively fast, which does not affect its use effect in actual production.

[0063] On the basis of the above embodiment, the step of "determining whether the assigned pneumatic butterfly valve 04 in each group of energy storage components has completed the action" includes:

[0064] It is determined whether the pressure in the energy storage device 02 to which the pneumatic butterfly valve 04 belongs reaches a preset value. If the pressure does not reach the preset value, the PLC controller 06 will issue an alarm message and stop the action of the pneumatic butterfly valve 04.

[0065] In this embodiment, in determining whether the assigned pneumatic butterfly valve 04 in each group of accumulator components has completed the action, the first step is to determine whether the pressure in the accumulator 02 to which the pneumatic butterfly valve 04 belongs has reached a preset value, that is, whether the internal pressure of the accumulator 02 meets the action requirements of the pneumatic butterfly valve 04. The "accumulator 02 pressure information" in the task of Figure 3 is determined by the feedback value of the pressure sensor 03. In this example, the pressure on the air supply side is 6.5 bar. The minimum pressure required for the butterfly valve to act is 5 bar after experimental testing. Therefore, we set the normal pressure value range to be greater than or equal to 5.1 bar. When the pressure is lower than this lower limit, the PLC controller 06 will display an alarm prompt message of "No. XX accumulator 02 air pressure is low". At the same time, the action of the butterfly valve under the accumulator 02 will be temporarily suspended, waiting for the accumulator 02 to be re-acted after the pressure is replenished.

[0066] Of course, in this embodiment, the above steps will be preceded by the valve number in 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 a position sensor for detection in the "open" and "closed" positions. When the pneumatic butterfly valve 04 is "open", the feedback signal of the "open" position is "1", and when the pneumatic butterfly valve 04 is "closed", the feedback signal of the "closed" position is "0". When the pneumatic butterfly valve 04 is in the process of action, the sensors in the "open" and "closed" positions have no detection signals. At this time, it can be determined that the butterfly valve is in the "middle position", that is, in the process of action; before each pneumatic butterfly valve 04 is actuated, the first piece of information will be obtained according to the order in the butterfly valve work task table. Taking the task table in Figure 3 as an example, in the order from top to bottom, the "butterfly valve action status" of the Y1 valve queried in the first step, if it is displayed as "actuated" or "acting", the next line of information will be judged. If "No action" is displayed, the step of determining whether the pressure in the energy storage device 02 reaches the preset value is executed.

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

[0068] Determine whether the pneumatic butterfly valve 04 is in action. If it is in action, proceed to the next pneumatic butterfly valve 04.

[0069] When the pressure of 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 and perform the action of the next pneumatic butterfly valve 04 in the task list until the actions of all pneumatic butterfly valves 04 in the process flow are completed, and then re-cycle and execute the action of the pneumatic butterfly valve 04 that has just been hung up.

[0070] Based on the above embodiment, if the pneumatic butterfly valve 04 is not in action, it is determined 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 fed back by the pneumatic butterfly valve 04 is the same as the state of the action instruction, the next pneumatic butterfly valve 04 is acted upon.

[0071] When the pressure of the energy storage device 02 is greater than the preset value and the pneumatic butterfly valve 04 is not in action, the action instruction will be checked first to see whether it is open or closed, and then the action of the action instruction will be compared with the action status of the pneumatic butterfly valve 04 at this time. If the two are the same, the butterfly valve action status of the pneumatic butterfly valve 04 in the task table will be marked as actuated.

[0072] On the basis of the above embodiment, after the step of “determining whether the state of the pneumatic butterfly valve 04 is the same as the action instruction of the pneumatic butterfly valve 04”, the following steps are also included:

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

[0074] When the action issued by the action instruction is different from the action status of the pneumatic butterfly valve 04 at this time, the PLC controller 06 will control the pneumatic butterfly valve 04 to act according to the action instruction, and if the pneumatic butterfly valve 04 fails to complete the corresponding action within the timing time, the PLC controller 06 will issue an alarm message to prompt the staff to check.

[0075] When an action of a pneumatic butterfly valve 04 in the task list is completed, if there are other pneumatic butterfly valves 04 that have not completed their actions in the task list at this time, a new task information will be restarted to control the action of the next pneumatic butterfly valve 04.

[0076] In summary, the present invention provides a pneumatic butterfly valve 04 control method, as shown in Figures 4 and 5, and the specific steps are as follows:

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

[0078] Obtain the first task information in the task table, that is, the action instruction of the first pneumatic butterfly valve 04 that needs to be actuated, the corresponding energy storage device 02 information, and the current state of the pneumatic butterfly valve 04;

[0079] The pressure sensor 03 is used to collect the pressure signal of the accumulator 02 to which the pneumatic butterfly valve 04 belongs, and then it is determined whether the internal pressure of the accumulator 02 is greater than the preset value. If the pressure is insufficient, the pneumatic butterfly valve 04 is temporarily suspended, and the accumulator 02 will be replenished with air and wait for the next cycle. If the pressure meets the standard, the following steps are continued;

[0080] The sensor on the pneumatic butterfly valve 04 is used to determine whether it is in action. If it is, the pneumatic butterfly valve 04 is temporarily suspended and waits for the next cycle. If it is not in action, continue with the following steps;

[0081] Query the action instruction of the pneumatic butterfly valve 04, and determine 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 open, and the pneumatic butterfly valve 04 at this time feedback is open, then mark it as actuated in the butterfly valve action status in the task table, if the pneumatic butterfly valve 04 at this time feedback is closed, proceed to the next step; if the action instruction is closed, and the pneumatic butterfly valve 04 at this time feedback is closed, then mark it as actuated in the butterfly valve action status in the task table, if the pneumatic butterfly valve 04 at this time feedback is open, proceed to the next step;

[0082] The pneumatic butterfly valve 04 with different actions in the control and action instructions is actuated and timed;

[0083] If the pneumatic butterfly valve 04 fails to complete the action according to the action instruction within the timing time, an alarm message 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 carried out;

[0084] Determine whether all butterfly valve actions in the task table are marked as actuated. If not, the task table information will be acquired cyclically and the action will be restarted. Of course, the information acquired at this time is the next one in the next task table. If all the information in the task table is marked as completed, the equipment will be prompted to enter the next process flow. In addition, if the butterfly valve action is marked as actuated when querying the task table information during the cycle, the intermediate step will be skipped directly and the next task information will be acquired again.

[0085] It should be noted that, in this specification, relational terms such as first and second are merely used to distinguish one entity from other entities, but do not necessarily require or imply any actual relationship or order between these entities.

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

[0087] The embodiments provided by the present invention are described in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A pneumatic butterfly valve energy storage system, characterized in that: include: A plurality of energy storage device assemblies connected to the compressed air main line; The energy storage assembly comprises: An accumulator is connected to the compressed air main line, and a pressure sensor for detecting the internal pressure of the accumulator is provided on the accumulator; A plurality of pneumatic butterfly valves are connected to the energy accumulator through compressed air pipes; The PLC controller is connected to the pressure sensor and a plurality of the pneumatic butterfly valves respectively.

2. The pneumatic butterfly valve energy storage system according to claim 1, characterized in that: A pressure regulating valve, a filter and a check valve are sequentially arranged between the energy storage device and the compressed air main line along the air outlet direction.

3. The pneumatic butterfly valve energy storage system according to claim 2, characterized in that: 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 controls the actions of a plurality of the pneumatic butterfly valves through the digital quantity output module.

4. The pneumatic butterfly valve energy storage system according to claim 2, characterized in that: The material of the energy storage device is stainless steel, and the volume of the energy storage device is less than 0.025m 3 .

5. A pneumatic butterfly valve control method, characterized in that: Applicable to the pneumatic butterfly valve energy storage system according to claims 1 to 4, the control method comprises: S1, allocating the number of pneumatic butterfly valves required to be actuated in each group of the accumulator assemblies according to the number of pneumatic butterfly valves required in the process flow; S2, determining whether the pneumatic butterfly valve allocated in each group of energy storage components has completed the action; S3, controlling the pneumatic valve bodies allocated and not in action in each group of energy storage components to act; S4, repeating steps S2 and S3 in a loop until all the pneumatic butterfly valves required in the process flow have completed their actions.

6. The pneumatic butterfly valve control method according to claim 5, characterized in that: The step of "allocating the number of pneumatic butterfly valves required to be actuated in each group of the accumulator assemblies according to the number of pneumatic butterfly valves required in the process flow" includes: The number of pneumatic butterfly valves required in the process flow is distributed in sequence to different groups of accumulator components until all the pneumatic butterfly valves are distributed, and the action sequence of the pneumatic butterfly valves in the process flow is based on the above sequence.

7. The pneumatic butterfly valve control method according to claim 6, characterized in that: The step of "determining whether the assigned pneumatic butterfly valve in each group of energy storage components has completed the action" includes: It is determined whether the pressure in the energy storage device to which the pneumatic butterfly valve belongs reaches a preset value. If the preset value is not reached, the PLC controller will issue an alarm message and stop the action of the pneumatic butterfly valve.

8. The pneumatic butterfly valve control method according to claim 7, characterized in that: The step of "determining 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 message and stop the action of the pneumatic butterfly valve" also includes: It is determined whether the pneumatic butterfly valve is in operation. If it is in operation, the next pneumatic butterfly valve is operated.

9. The pneumatic butterfly valve control method according to claim 8, characterized in that: If the pneumatic butterfly valve is not in action, determine whether the current state of the pneumatic butterfly valve is the same as the action instruction of the pneumatic butterfly valve. If the state fed back by the pneumatic butterfly valve is the same as the state of the action instruction, perform the next action of the pneumatic butterfly valve.

10. The pneumatic butterfly valve control method according to claim 9, characterized in that: After the step of "determining whether the state of the pneumatic butterfly valve at this time is the same as the action instruction of the pneumatic butterfly valve", the following further comprises: 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.

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