CN210179307U - Automatic nitrogen system that fills of gasbag - Google Patents
Automatic nitrogen system that fills of gasbag Download PDFInfo
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- CN210179307U CN210179307U CN201920681170.9U CN201920681170U CN210179307U CN 210179307 U CN210179307 U CN 210179307U CN 201920681170 U CN201920681170 U CN 201920681170U CN 210179307 U CN210179307 U CN 210179307U
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Abstract
An automatic nitrogen charging system for an air bag comprises a nitrogen bottle, a pressure reducing valve, a first pressure sensor, a first control valve, a proportional pressure reducing valve, a flow control valve, a second pressure sensor, an exhaust valve, a manual stop valve and a programmable controller; the air bags in workpieces of different specifications are automatically filled with nitrogen at the same station, different flow rates can be output through the flow control valve, the workpieces of different specifications can meet technological requirements, the high-speed on-off of the control valve is matched with the pressure sensor, the high pressure precision requirement can be met, the inflation process is fully automatic, a large amount of labor can be saved, and good economic and social benefits are obtained.
Description
Technical Field
The application relates to the technical field of nitrogen filling, in particular to an automatic nitrogen filling system for an air bag.
Background
In many production occasions, the air bag in the workpiece needs to be filled with nitrogen, the inflation pressure and the inflation speed need to be controllable, and the pressure is also required to be stable in the pressure maintaining process. Because the pressure of the nitrogen cylinder is higher and reaches 15MPa, a manual control method is adopted at present.
Manually controlling the size of the manual valve, observing the mechanical pressure gauge, and closing the valve when the specified process pressure is reached; if the pressure changes due to the temperature rise, the exhaust valve needs to be opened manually. The existing process production process has accident hidden danger, meanwhile, personnel are required to monitor pressure constantly, the control precision is required to be improved, and the improvement is urgently needed.
SUMMERY OF THE UTILITY MODEL
The application provides an automatic nitrogen system that fills of gasbag to solve prior art and adopt manual control, need personnel to monitor pressure constantly, and the problem that control accuracy is not high.
The above technical purpose of the present invention can be achieved by the following technical solutions:
an automatic nitrogen charging system for an air bag comprises a nitrogen bottle, a pressure reducing valve, a first pressure sensor, a first control valve, a proportional pressure reducing valve, a flow control valve, a second pressure sensor, an emptying valve and a programmable controller;
the nitrogen cylinder, the pressure reducing valve, the first pressure sensor, the first control valve, the proportional pressure reducing valve, the flow control valve, the second pressure sensor and the emptying valve are communicated in sequence through pipelines;
the emptying valve is communicated with a first station through a pipeline;
the programmable controller is respectively electrically connected with the first pressure sensor, the second pressure sensor, the first control valve, the second control valve, the proportional pressure reducing valve, the flow control valve and the emptying valve.
Further: the programmable controller controls the proportional pressure reducing valve according to the pressure signal given by the first pressure sensor, so that the pressure of the proportional pressure reducing valve is higher than the pressure signal given by the first pressure sensor by about 0.2 MPa.
Further: the programmable controller gives parameters in a program in advance according to the flow characteristics required by the process to control the opening degree of the flow control valve.
Further: the second control valve is used for controlling the inflation pressure of the workpiece at the first station, and controlling the air inflow of nitrogen and precisely adjusting the inflation pressure of the workpiece through quick on-off according to a signal fed back by the second pressure sensor.
Further: the evacuation valve is used for the evacuation of the workpiece airbag in the event of overpressure.
Further: the second pressure sensor is used for detecting the pressure of the first station workpiece air bag.
Further: the first pressure sensor is used for detecting the inlet pressure of the second control valve.
Further: the nitrogen filling system further comprises a manual emptying valve, and the manual emptying valve is located on a pipeline between the first station and the emptying valve.
Further: the nitrogen filling system further comprises a manual stop valve, one end of the manual stop valve is communicated with the pressure reducing valve, and the other end of the manual stop valve is communicated with the emptying valve.
The technical scheme provided by the application comprises the following beneficial technical effects:
an automatic nitrogen charging system for an air bag is characterized in that an operator firstly opens a nitrogen bottle, the nitrogen bottle adjusts the pressure of a pipeline to working pressure through a pressure reducing valve to supply air to a first station, and a first control valve on the first station controls the opening and closing of the pipeline;
the nitrogen flows through the first control valve to reach a proportional pressure reducing valve, the programmable controller regulates the pressure to meet the requirement of the pressure difference required by the flow control valve through the proportional pressure reducing valve, the proportional pressure reducing valve regulates the pressure of the flow control valve according to the pressure at the outlet of the flow control valve, the pressure of the flow control valve is measured by the first pressure sensor, and the pressure at the inlet of the flow control valve is regulated in real time;
the nitrogen passing through the proportional pressure reducing valve is sent to a flow control valve, the flow control valve controls the flow of the nitrogen, and the time for reaching the set pressure is controlled according to the process requirement;
the second control valve is used for controlling the inflation pressure of the workpiece at the first station, and controlling the air inflow of nitrogen and precisely adjusting the inflation pressure of the workpiece through quick on-off according to a signal fed back by the first pressure sensor;
the evacuation valve is used for exhausting the workpiece air bag under the condition of overpressure;
the first pressure sensor is used for detecting the pressure of the first station workpiece air bag;
the second pressure sensor is used for detecting the inlet pressure of the second control valve, and the first control valve is opened only when the inlet pressure of the first control valve meets the production requirement;
and meanwhile, a manual stop valve and a manual emptying valve are installed to control the pipeline, and when the second control valve or the first control valve breaks down, the pipeline is manually opened through the manual stop valve so as to continue production.
The air bags in workpieces of different specifications are automatically filled with nitrogen at the same station, different flow rates can be output through the flow control valve, the workpieces of different specifications can meet technological requirements, the high-speed on-off of the control valve is matched with the pressure sensor, the high pressure precision requirement can be met, the inflation process is fully automatic, a large amount of labor can be saved, and good economic and social benefits are obtained.
Drawings
In order to more clearly explain the technical solution of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without any creative effort.
FIG. 1 is a schematic diagram of an overall system provided by an embodiment of the present application;
fig. 2 is a schematic diagram of a system in which the programmable controller is removed in the first embodiment of the present application.
Description of reference numerals: 1. a nitrogen gas cylinder; 2. a pressure reducing valve; 3. a first pressure sensor; 4. a first control valve; 5. a proportional pressure reducing valve; 6. a flow control valve; 7. a second control valve; 8. a second pressure sensor; 9. an evacuation valve; 10. a manual purge valve; 11. a manual stop valve; 12. a programmable controller; 13. a first station.
Detailed Description
Examples
As shown in fig. 1 and 2, the automatic nitrogen charging system for the air bag comprises a nitrogen cylinder 1, a pressure reducing valve 2, a first pressure sensor 3, a first control valve 4, a proportional pressure reducing valve 5, a flow control valve 6, a second control valve 7, a second pressure sensor 8, an exhaust valve 9, a manual exhaust valve 10, a manual stop valve 11 and a programmable controller 12.
The nitrogen cylinder 1, the pressure reducing valve 2, the first pressure sensor 3, the first control valve 4, the proportional pressure reducing valve 5, the flow control valve 6, the second control valve 7, the second pressure sensor 8 and the emptying valve 9 are communicated in sequence through pipelines.
The emptying valve 9 is communicated with a first station 13 through a pipeline.
The manual evacuation valve 10 is located on the pipe between station number one 13 and the evacuation valve 9.
One end of the manual stop valve 11 is communicated with the pressure reducing valve 2, and the other end of the manual stop valve 11 is communicated with the emptying valve 9.
The programmable controller 12 is electrically connected to the first pressure sensor 3, the second pressure sensor 8, the first control valve 4, the second control valve 7, the proportional pressure reducing valve 5, the flow control valve 6, and the purge valve 9, respectively.
The working principle is as follows: nitrogen gas flows out from nitrogen cylinder 1, through relief pressure valve 2, and relief pressure valve 2 adjusts nitrogen gas pressure to operating pressure, and the nitrogen gas through the pressure regulating flows to first control valve 4, and first pressure sensor 3 monitors the inlet pressure of first control valve 4 simultaneously, and only when the inlet pressure of first control valve 4 satisfied production requirement, first control valve 4 just can be opened, makes nitrogen gas pass through.
After the nitrogen gas passing through the first control valve 4 reaches the proportional pressure reducing valve 5, the programmable controller 12 controls the proportional pressure reducing valve 5 according to the pressure signal given by the first pressure sensor 3, so that the pressure of the proportional pressure reducing valve 5 is about 0.2 MPa higher than the pressure signal given by the first pressure sensor 3, and the requirement of the flow control valve 6 on the pressure difference is met, because the flow control valve 6 has the requirement on the pressure difference of the inlet and the outlet of the valve, the flow can be stabilized only if the pressure difference is kept constant.
The nitrogen passing through the proportional pressure reducing valve 5 flows to the flow control valve 6, the programmable controller 12 gives parameters in a program according to the flow characteristics required by the process in advance, the opening degree of the flow control valve 6 is controlled, and the flow control valve 6 controls the flow of the nitrogen to preliminarily meet the flow required by the process parameters.
The nitrogen gas passes through the flow control valve 6 and then reaches the second control valve 7, the second control valve 7 is used for controlling the inflation pressure of the workpiece at the first station 13, the programmable controller 12 controls the second control valve 7 to be rapidly opened and closed according to the pressure signal given by the first pressure sensor 3, the air inflow of the nitrogen gas is controlled, the nitrogen gas enters the workpiece at the first station 13 in a small amount each time the workpiece is opened and closed, the pressure slowly rises, if the working pressure required by the workpiece is not reached, the programmable controller 12 continuously controls the control valve 7 to be rapidly opened and closed, and the nitrogen gas continues to be inflated in a small amount until the working pressure of the workpiece is reached.
If the pressure of the workpiece at the first station 13 is detected by the second pressure sensor 8 to exceed the set pressure due to temperature change and the like in the working process, the programmable controller 12 controls the evacuation valve 9 to open to discharge redundant nitrogen gas, so that the pressure of the workpiece at the first station 13 is returned to the set pressure.
The air bags in the workpieces of different specifications are automatically filled with nitrogen at the same station through the embodiment, different flows can be output through the flow control valve, the workpieces of different specifications can meet technological requirements, the high-speed on-off of the control valve is matched with the pressure sensor, the high pressure precision requirement can be met, the inflation process is fully automatic, a large amount of manpower can be saved, and good economic benefit and social benefit are obtained.
It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that an article or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above description is merely exemplary of the present application and is presented to enable those skilled in the art to understand and practice the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
It is to be understood that the present application is not limited to what has been described above, and that various modifications and changes may be made without departing from the scope thereof. The scope of the application is limited only by the appended claims.
Claims (9)
1. An automatic nitrogen charging system for an air bag is characterized by comprising a nitrogen bottle (1), a pressure reducing valve (2), a first pressure sensor (3), a first control valve (4), a proportional pressure reducing valve (5), a flow control valve (6), a second control valve (7), a second pressure sensor (8), an exhaust valve (9) and a programmable controller (12);
the nitrogen cylinder (1), the pressure reducing valve (2), the first pressure sensor (3), the first control valve (4), the proportional pressure reducing valve (5), the flow control valve (6), the second control valve (7), the second pressure sensor (8) and the emptying valve (9) are communicated in sequence through pipelines;
a first station (13) is communicated with the emptying valve (9) through a pipeline;
the programmable controller (12) is respectively electrically connected with the first pressure sensor (3), the second pressure sensor (8), the first control valve (4), the second control valve (7), the proportional pressure reducing valve (5), the flow control valve (6) and the emptying valve (9).
2. An automatic nitrogen-filling system for air bags according to claim 1, characterized in that said programmable controller controls the proportional pressure reducing valve (5) according to the pressure signal given by the first pressure sensor (3) so that the pressure of the proportional pressure reducing valve (5) is higher than the pressure signal given by the first pressure sensor (3) by about 0.2 mpa.
3. An automatic nitrogen charging system for air bags according to claim 1, characterized in that the programmable controller (12) gives parameters in advance in the program according to the flow characteristics required by the process to control the opening degree of the flow control valve (6).
4. The automatic nitrogen charging system of the air bag is characterized in that the second control valve (7) is used for controlling the charging pressure of a workpiece at the first station (13), and the charging pressure of the workpiece is precisely adjusted by controlling the nitrogen gas inflow through rapid on-off according to the signal fed back by the second pressure sensor (8).
5. An automatic gas bag nitrogen filling system according to claim 1, wherein the evacuation valve (9) is used for the evacuation of the gas bag of the workpiece in case of overpressure.
6. The automatic nitrogen filling system for the air bag according to claim 1, wherein the second pressure sensor (8) is used for pressure detection of the air bag of the workpiece at the first station (13).
7. An automatic nitrogen charging system for air bags according to claim 1, characterized in that the first pressure sensor (3) is used to detect the inlet pressure of the second control valve (7).
8. An automatic nitrogen charging system for air bags according to claim 1, characterized in that, the nitrogen charging system further comprises a manual evacuation valve (10), the manual evacuation valve (10) is positioned on the pipeline between the first station (13) and the evacuation valve (9).
9. An automatic nitrogen charging system for air bags according to claim 1, characterized in that the nitrogen charging system further comprises a manual stop valve (11), one end of the manual stop valve (11) is communicated with the pressure reducing valve (2), and the other end of the manual stop valve (11) is communicated with the emptying valve (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920681170.9U CN210179307U (en) | 2019-05-14 | 2019-05-14 | Automatic nitrogen system that fills of gasbag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920681170.9U CN210179307U (en) | 2019-05-14 | 2019-05-14 | Automatic nitrogen system that fills of gasbag |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210179307U true CN210179307U (en) | 2020-03-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920681170.9U Active CN210179307U (en) | 2019-05-14 | 2019-05-14 | Automatic nitrogen system that fills of gasbag |
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|---|---|
| CN (1) | CN210179307U (en) |
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- 2019-05-14 CN CN201920681170.9U patent/CN210179307U/en active Active
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