CN108733098B - Pressure control system and control method - Google Patents
Pressure control system and control method Download PDFInfo
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- CN108733098B CN108733098B CN201710264568.8A CN201710264568A CN108733098B CN 108733098 B CN108733098 B CN 108733098B CN 201710264568 A CN201710264568 A CN 201710264568A CN 108733098 B CN108733098 B CN 108733098B
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- pressure tank
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D16/00—Control of fluid pressure
- G05D16/20—Control of fluid pressure characterised by the use of electric means
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Abstract
A pressure control system and a control method are disclosed, the system is provided with a first air pressure tank, a second air pressure tank, a conveying pipeline and a control circuit; the method comprises the following steps: step a, in an initial state, setting a first air pressure tank and a second air pressure tank to be in a full tank state; the control circuit controls a first electromagnetic valve at the bottom end of the first air pressure tank to be in a fully open state, controls a second electromagnetic valve at the bottom end of the second air pressure tank to be in a fully closed state, and the like; the method can be applied to auxiliary equipment for mineral wool plate production, can effectively overcome the defects in the prior art, can achieve the technical effect that the tank body is replaced without stopping, and can effectively improve the production efficiency of equipment; in addition, stable pressure air can be provided, and the phenomenon of unstable process caused by fluctuation of compressed air can be effectively avoided.
Description
Technical Field
The application relates to, but is not limited to, mineral wool board production auxiliary equipment, in particular to a pressure control system and a control method.
Background
In the prior art, the mineral wool board has superior performances of sound absorption, non-combustion, heat insulation, decoration and the like, and is widely used for indoor decoration of various building suspended ceilings and wall-attached walls. The usual production process of mineral wool boards mainly comprises the following steps: loosening mineral wool, grinding paper and pulping, mixing and stirring, feeding into a constant tank, discharging pulp and screening, molding, feeding into a room and drying, discharging, cutting and puttying, drying, spraying, embossing, cutting, spraying gum, packaging and warehousing and the like. Among these, compressed air is often required to be supplied through an air tank in the production.
However, the air tank pressure supply system as a plate production line has the following disadvantages: firstly, the compressed air tank needs to be stopped to carry out corresponding replacement operation after being used up, and the production efficiency is seriously reduced; secondly, the pressure of the pressure tank is continuously reduced in the using process, and the provided compressed air has certain fluctuation, so that the subsequent related processes of the production line are influenced.
Disclosure of Invention
The technical problem solved by the application is to provide a pressure control system and a control method, which can effectively overcome the defects in the prior art, realize the technical effect that the tank body is replaced without stopping, and effectively improve the production efficiency of equipment; in addition, stable pressure air can be provided, and the phenomenon of unstable process caused by fluctuation of compressed air can be effectively avoided.
In order to solve the technical problem, the application provides a pressure control system which is provided with a first air pressure tank, a second air pressure tank, a conveying pipeline and a control circuit; wherein the content of the first and second substances,
the top end of the first air pressure tank is provided with a first sensor, the first sensor is used for detecting the internal pressure of the tank body of the first air pressure tank and transmitting a detection value to the control circuit; the bottom end of the first air pressure tank is connected with the conveying pipeline through a pipeline, and a first electromagnetic valve is arranged on the pipeline and is set to act according to the instruction of the control circuit;
the top end of the second air pressure tank is provided with a second sensor which is used for detecting the internal pressure of the tank body of the second air pressure tank and transmitting a detection value to the control circuit; the bottom end of the second air pressure tank is connected with the conveying pipeline through a pipeline, and a second electromagnetic valve is arranged on the pipeline and is set to act according to the instruction of the control circuit.
The pressure control system described above, may also be characterized as follows,
the control circuit is provided with a comparator; wherein the content of the first and second substances,
the control circuit is configured to compare the detection data of the first sensor with a first preset value and control the opening of the second electromagnetic valve according to the comparison result.
The pressure control system described above, may also be characterized as follows,
and a third sensor is arranged on the conveying pipeline, is used for detecting the internal pressure of the pipeline on the conveying pipeline and conveying the detection value to the control circuit.
The pressure control system described above, may also be characterized as follows,
the control circuit is configured to compare the detection data of the third sensor with a second preset value and control the opening degree of the second electromagnetic valve according to the comparison result.
In order to solve the above technical problem, the present application further provides a pressure control method, including the following steps:
step a, in an initial state, setting a first air pressure tank and a second air pressure tank to be in a full tank state; the control circuit controls a first electromagnetic valve at the bottom end of the first air pressure tank to be in a fully-opened state, and controls a second electromagnetic valve at the bottom end of the second air pressure tank to be in a fully-closed state;
b, when the control circuit detects that the tank body pressure reduction range in the first air tank exceeds a preset range through the first sensor, a second electromagnetic valve at the bottom end of a second air pressure tank is controlled to be opened to a preset opening degree;
c, when the control circuit detects that the pressure in the pipeline of the conveying pipeline is lower than a preset value through a third sensor, the control circuit controls a second valve to increase a preset opening value;
and d, when the pressure of the tank body in the first air tank body is reduced to a preset threshold value, the control circuit controls the second electromagnetic valve at the bottom end of the second air pressure tank to be in a fully-opened state, controls the first electromagnetic valve at the bottom end of the first air pressure tank to be in a fully-closed state, and sets the first air pressure tank to be in a state of preparing for replacing a new tank.
The above technical scheme of this application has following beneficial effect:
through the optimized structures and the control method, the defects in the prior art can be effectively overcome, the technical effect that the tank body is replaced without stopping can be realized, and the production efficiency of equipment can be effectively improved; in addition, stable pressure air can be provided, and the phenomenon of unstable process caused by fluctuation of compressed air can be effectively avoided.
Additional features and advantages of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the embodiments of the invention. The objectives and other advantages of the application may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
The accompanying drawings are included to provide a further understanding of the claimed subject matter and are incorporated in and constitute a part of this specification, illustrate embodiments of the subject matter and together with the description serve to explain the principles of the subject matter and not to limit the subject matter.
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Detailed Description
Hereinafter, embodiments of the present application will be described in detail with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.
As shown in connection with figure 1 of the drawings,
the embodiment of the invention provides a pressure control system, which is provided with a first air pressure tank 1, a second air pressure tank 2, a conveying pipeline 8 and a control circuit 7; the top end of the first air pressure tank 1 is provided with a first sensor 3, the first sensor 3 is used for detecting the internal pressure of the first air pressure tank 1 and transmitting the detected value to the control circuit 7; the bottom end of the first air pressure tank 1 is connected with a conveying pipeline 8 through a pipeline, a first electromagnetic valve 5 is arranged on the pipeline, and the first electromagnetic valve 5 is set to act according to the instruction of a control circuit 7; the top end of the second air pressure tank 2 is provided with a second sensor 4, the second sensor 4 is arranged to detect the internal pressure of the second air pressure tank 2 and transmit the detected value to the control circuit 7; the bottom end of the second air pressure tank 2 is connected with a conveying pipeline 8 through a pipeline, a second electromagnetic valve 6 is arranged on the pipeline, and the second electromagnetic valve 6 is set to act according to the instruction of the control circuit 7.
In the specific operation, a person skilled in the art may first use the air in the first air pressure tank 1, and when it is detected that the air pressure in the first air pressure tank 1 decreases by a value exceeding a preset range; the pressure in the first air pressure tank 1 is lower than the air pressure required by the stable operation of the production system; further, the second air pressure tank 2 can be controlled and opened by the control circuit 7 to be used in cooperation with the first air pressure tank 1. The pressure slowly drops with the continuous use of the first air pressure tank 1; correspondingly, the opening degree of the second air pressure tank 2 serving as a supplement tank body is correspondingly adjusted to be gradually increased so as to supplement the descending pressure difference in the first air pressure tank 1; the first air pressure tank 1 is used in cooperation with the second air pressure tank 2, so that the condition of pressure supply fluctuation caused by pressure reduction in the pressure supply process through a single tank body can be effectively avoided; the stable pressure supply can be realized, and the stable operation of the subsequent production process can be effectively ensured. In addition, the output end of the conveying pipeline is connected to the equipment production line.
In order to realize the comparison function of the signals; the control circuit 7 may be provided with a comparator; preferably, the control circuit may be provided with a PLC programmable logic controller; the control circuit 7 is configured to compare the detection data of the first sensor 3 with a first preset value, and control the opening of the second electromagnetic valve 6 according to the comparison result. It should be noted that, according to the above-mentioned indications of the present technical solution, in the specific implementation process, a person skilled in the art may select any type of sensor, so as to implement the function of corresponding detection. The operations such as the detection of the signals can be realized by a control circuit, a commonly used comparison circuit and the like, and the components of the circuits belong to electrical elements commonly used in the field; in addition, the control circuit structure does not involve the improvement of a software program.
Accordingly, in order to further improve the stability of the system operation; a third sensor 9 may be provided on the delivery pipe, the third sensor 9 being arranged to detect the pipe internal pressure on the delivery pipe 8 and to deliver the detected value to the control circuit 7. Specifically, the control circuit 7 may be configured to compare the detection data of the third sensor 9 with a second preset value, and control the opening degree of the second electromagnetic valve 6 according to the comparison result.
In a specific operation, a double detection control function can be realized through the detection of the third sensor 9; that is, the control circuit 7 controls the opening degree of the second air pressure tank 2 by the pressure detection result of the first air pressure tank 1, and the control circuit 7 also controls the opening degree of the second air pressure tank 2 by the detection result of the third sensor 9 of the transfer line. In practical applications, a person skilled in the art can set corresponding values according to practical production conditions, and details are not described here.
Correspondingly, the invention also provides a pressure control method corresponding to the pressure control system; the method can comprise the following steps:
step a, in an initial state, setting a first air pressure tank 1 and a second air pressure tank 2 to be in a full tank state; the control circuit 7 controls the first electromagnetic valve 5 at the bottom end of the first air pressure tank 1 to be in a fully open state, and controls the second electromagnetic valve 6 at the bottom end of the second air pressure tank 2 to be in a fully closed state;
step b, when the control circuit 7 detects that the tank body pressure reduction range in the first air tank exceeds a preset range through the first sensor 3, the second electromagnetic valve 6 at the bottom end of the second air pressure tank 2 is controlled to be opened to a preset opening degree;
step c, when the control circuit 7 detects that the pressure in the pipeline of the conveying pipeline 8 is lower than a preset value through the third sensor 9, the control circuit controls the second valve to increase a preset opening value;
and d, when the tank body pressure in the first air tank body is reduced to a preset threshold value, the control circuit 7 controls the second electromagnetic valve 6 at the bottom end of the second air pressure tank 2 to be in a fully-opened state, controls the first electromagnetic valve 5 at the bottom end of the first air pressure tank 1 to be in a fully-closed state, and sets the first air pressure tank 1 to be in a state of being ready for replacing a new tank.
Through the optimized structures and the control method, the defects in the prior art can be effectively overcome, the technical effect that the tank body is replaced without stopping can be realized, and the production efficiency of equipment can be effectively improved; in addition, stable pressure air can be provided, and the phenomenon of unstable process caused by fluctuation of compressed air can be effectively avoided.
It should be understood by those skilled in the art that the embodiments of the present invention are described above, but the descriptions are only for the purpose of facilitating understanding of the embodiments of the present invention, and are not intended to limit the embodiments of the present invention. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the embodiments of the invention as defined by the appended claims.
Claims (4)
1. A pressure control system is provided with a first air pressure tank, and is characterized by also being provided with a second air pressure tank, a conveying pipeline and a control circuit; wherein the content of the first and second substances,
the top end of the first air pressure tank is provided with a first sensor, the first sensor is used for detecting the internal pressure of the tank body of the first air pressure tank and transmitting a detection value to the control circuit; the bottom end of the first air pressure tank is connected with the conveying pipeline through a pipeline, and a first electromagnetic valve is arranged on the pipeline and is set to act according to the instruction of the control circuit;
the top end of the second air pressure tank is provided with a second sensor which is used for detecting the internal pressure of the tank body of the second air pressure tank and transmitting a detection value to the control circuit; the bottom end of the second air pressure tank is connected with the conveying pipeline through a pipeline, and a second electromagnetic valve is arranged on the pipeline and is set to act according to the instruction of the control circuit;
the control circuit is provided with a comparator, wherein the control circuit is set to compare the detection data of the first sensor with a first preset value, control the opening degree of the second electromagnetic valve according to the comparison result, and control the first electromagnetic valve to be in a fully closed state when the second electromagnetic valve is in a fully open state;
the control circuit is configured to use the first air pressure tank first, and simultaneously control the opening degree of the second air pressure tank to be correspondingly increased along with the decrease of the pressure of the first air pressure tank, so that the second air pressure tank is matched with the first air pressure tank for use.
2. Pressure control system according to claim 1,
and a third sensor is arranged on the conveying pipeline, is used for detecting the internal pressure of the pipeline on the conveying pipeline and conveying the detection value to the control circuit.
3. Pressure control system according to claim 2,
the control circuit is configured to compare the detection data of the third sensor with a second preset value and control the opening degree of the second electromagnetic valve according to the comparison result.
4. A control method of the pressure control system according to any one of claims 1 to 3, characterized by comprising the steps of:
step a, in an initial state, setting a first air pressure tank and a second air pressure tank to be in a full tank state; the control circuit controls a first electromagnetic valve at the bottom end of the first air pressure tank to be in a fully-opened state, and controls a second electromagnetic valve at the bottom end of the second air pressure tank to be in a fully-closed state;
b, when the control circuit detects that the tank body pressure reduction range in the first air tank exceeds a preset range through the first sensor, a second electromagnetic valve at the bottom end of a second air pressure tank is controlled to be opened to a preset opening degree;
c, when the control circuit detects that the pressure in the pipeline of the conveying pipeline is lower than a preset value through a third sensor, the control circuit controls a second valve to increase a preset opening value;
and d, when the pressure of the tank body in the first air tank body is reduced to a preset threshold value, the control circuit controls the second electromagnetic valve at the bottom end of the second air pressure tank to be in a fully-opened state, controls the first electromagnetic valve at the bottom end of the first air pressure tank to be in a fully-closed state, and sets the first air pressure tank to be in a state of preparing for replacing a new tank.
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| CN201710264568.8A CN108733098B (en) | 2017-04-20 | 2017-04-20 | Pressure control system and control method |
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| CN201710264568.8A CN108733098B (en) | 2017-04-20 | 2017-04-20 | Pressure control system and control method |
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| CN108733098B true CN108733098B (en) | 2021-07-09 |
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| CN103321312A (en) * | 2012-10-23 | 2013-09-25 | 北新集团建材股份有限公司 | Production method of mineral wool boards |
| WO2016197252A1 (en) * | 2015-06-12 | 2016-12-15 | Westport Power Inc. | High pressure fluid control system and method of controlling pressure bias in an end use device |
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| CN103321312A (en) * | 2012-10-23 | 2013-09-25 | 北新集团建材股份有限公司 | Production method of mineral wool boards |
| WO2016197252A1 (en) * | 2015-06-12 | 2016-12-15 | Westport Power Inc. | High pressure fluid control system and method of controlling pressure bias in an end use device |
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