Standard gas distribution gas path system easy to replace

Abstract

The invention relates to the field of standard gas configuration, and discloses an easy-to-replace standard gas distribution gas path system, which comprises a main path, a plurality of gas supply assemblies, a plurality of gas distribution gas paths, a plurality of gas distribution gas paths and a plurality of gas distribution gas paths, the gas cylinder is communicated with the main path; the branch I is communicated with the branch IV; the pressure sensor is located on the side, close to the gas cylinder, of the main path and used for monitoring gas path pressure; the industrial personal computer is used for receiving data of the pressure sensor to control opening and closing of the safety valve 1 and the pneumatic valves. The control system is used for opening the pneumatic valve on one component, at the moment, one component gas can enter the gas cylinder, then the pneumatic valve is closed, the pneumatic valve on the next component gas is opened, and the next component gas can enter the gas cylinder, so that the filling of the gases of different components can be automatically completed, the manual participation amount in the gas distribution work is greatly reduced, and the working efficiency is improved. And the labor burden is relieved, and the gas filling accuracy is improved.

Description

Technical Field

[0001] The invention relates to the field of standard gas configuration, in particular to a standard gas distribution gas circuit system which is easy to replace. Background Art

[0002] In the preparation process of standard gas, the standard gas distribution system is a key technology. Its purpose is to accurately mix multiple gases in a set proportion to prepare standard gas that meets the requirements. Standard gas is widely used in instrument calibration, environmental monitoring, industrial process control, medical testing and other fields. Therefore, there are high requirements for the accuracy, stability and repeatability of standard gas.

[0003] However, the existing standard gas distribution circuit requires a large amount of manual operation during use, so the precision control of gas distribution is insufficient and the manual operation is cumbersome, which leads to low efficiency in the standard gas preparation process. In addition, due to the different components of different gases, when the gas distribution contains flammable, explosive or toxic gases, the large amount of manual operation may easily cause safety accidents. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention provides an easily replaceable standard gas distribution gas circuit system, which solves the problem in the prior art that the standard gas distribution gas circuit requires a large amount of manual operation, thus resulting in insufficient gas distribution accuracy, low efficiency and safety hazards.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a standard gas distribution gas circuit that is easy to replace, comprising:

[0006] A main path, wherein a plurality of gas supply components are connected in the middle thereof, and is used to transport the gas discharged from the gas supply components, wherein a pneumatic valve is installed in the gas supply component, and is used to control the outflow of the gas;

[0007] A gas cylinder, which is connected to the main road and is used to collect the gas delivered from the main road;

[0008] Branch 1 is connected to branch 4, one end of which is connected to a waste gas discharge circuit, and the waste gas discharge circuit is in the waste gas pool;

[0009] A pressure sensor is located on the main line near the gas cylinder and is used to monitor the gas line pressure. A safety valve 1 is installed in the branch line 1 to open the safety valve 1 to release the pressure when the gas line pressure is too high, and the gas supply assembly is located between the pressure sensor and the branch line 4;

[0010] The industrial computer is used to receive data from the pressure sensor to control the opening and closing of the safety valve 1 and each pneumatic valve.

[0011] Preferably, a one-way valve is installed in the waste discharge circuit to prevent the medium in the waste gas pool from entering the pipeline, and a bottle valve is installed at the mouth of the gas cylinder.

[0012] Preferably, the gas supply assembly includes component gases, the component gases are connected to the main road through pipelines, and a manual valve and a filter are installed on the pipeline, and the pneumatic valve is installed on the pipeline near the main road.

[0013] Preferably, a throttle valve is installed on the main circuit, and the throttle valve is located between the pressure sensor and the bottle valve. Branch 2 and branch 3 are also provided on the main circuit, and branch 2 is connected to branch 1.

[0014] Preferably, a pneumatic valve 3 is installed on the second branch, a pneumatic valve 2 and a vacuum pump are installed on the third branch, and a vacuum gauge sensor and a safety valve 2 are installed on the fourth branch.

[0015] Preferably, the safety valve 2 and the vacuum gauge sensor are close to the pneumatic valve 1 , and the vacuum gauge sensor is located between the pneumatic valve 1 and the safety valve 2 .

[0016] Preferably, the air supply assembly is located between branch three and branch four, and branch one, branch three and branch four are all connected to the waste discharge circuit.

[0017] Preferably, the main circuit is also equipped with a flow sensor, and the flow sensor is located between the bottle valve and the throttle valve.

[0018] Preferably, the component gases are movably connected to the pipeline.

[0019] Preferably, the vacuum gauge sensor, flow sensor, pressure sensor, each pneumatic valve and each safety valve are all connected to an industrial computer.

[0020] Working principle: When in use, first connect the gas supply component to the main road. At this time, by opening the manual valve, the component gas enters the pipeline and passes through the filter. At this time, the filter can be used to filter and remove impurities from the component gas. At this time, by opening the pneumatic valve, the component gas can enter the main road. At this time, the safety valve 1 and the pneumatic valve 1 are both in the closed state, so the component gas in the main road can pass through the bottle valve into the gas cylinder. When it is necessary to transport another gas to the gas cylinder, first close the manual valve and pneumatic valve that control the gas of the previous component, and then open the manual valve and pneumatic valve of the next component gas. At this time, another gas can enter the gas cylinder, thereby achieving the purpose of gas distribution. Multiple component gases can be set, so they can be opened in sequence. Open the corresponding manual valves and pneumatic valves to realize the gas distribution of multiple gases. In this process, the pressure sensor can be used to monitor the pressure in the main road in real time. When the pressure in the main road is high, the industrial control machine will drive the safety valve 1 to open it. At this time, the gas in the main road can enter the exhaust circuit along the branch road 4 and finally enter the exhaust gas pool. The one-way valve in the exhaust pipeline can prevent the medium in the exhaust gas pool from entering the main gas path. A branch road 3 is also provided between the branch road 1 and the main road, and a pneumatic valve 2 and a vacuum pump are installed on the branch road 3. Therefore, after a component gas enters the gas cylinder, the corresponding pneumatic valve and bottle valve of the component gas are closed first, and then the vacuum pump is driven to extract the component gas in the gas path to make it enter It enters the exhaust pipeline and finally enters the exhaust gas pool, and the vacuum gauge sensor can be used to monitor the vacuum degree in the gas circuit. When the preset vacuum degree is reached, the vacuum pump, pneumatic valve 2, and pneumatic valve 1 are closed, and then the pneumatic valve corresponding to another component gas is opened to allow the component gas to enter the main circuit. Then, the bottle valve is opened to allow the other component gas to enter the gas cylinder. Therefore, multiple component gases can be distributed, and the throttle valve on the main circuit can be used to slow down the flow rate of the component gas entering the gas cylinder, so it is easy to adjust the amount of component gas entering the gas cylinder, and the flow sensor can be used to monitor the flow rate of the component gas, which can improve the ratio between the component gases during distribution. At the same time, in the process of distribution, the pressure sensor is used The device can detect the pressure in the gas circuit. When the pressure in the gas circuit is high, the pressure sensor can transmit data to the industrial computer. At this time, the industrial computer will drive safety valve 1 and safety valve 2 to open and discharge the gas in the gas circuit, thereby avoiding safety accidents caused by excessive gas pressure. The industrial computer can control the opening and closing of pneumatic valve, pneumatic valve 1, pneumatic valve 2, safety valve 1 and safety valve 2 by receiving data from vacuum gauge sensor, flow sensor and pressure sensor, so as to achieve the purpose of automatic gas distribution. At the same time, it can also complete automatic pressure relief when the gas pressure is too high, thereby improving the efficiency and safety of distribution. After closing the manual valve, the component gas can be replaced, thereby realizing the filling of multi-component gas.

[0021] The present invention provides a standard gas distribution gas circuit system that is easy to replace. It has the following beneficial effects:

[0022] 1. The present invention uses a control system to open the pneumatic valve on one component, so that one component gas can enter the gas cylinder. Then the pneumatic valve is closed and the pneumatic valve on the next component gas is opened, so that the next component gas can enter the gas cylinder. Therefore, the filling of gases of different components can be automatically completed, which greatly reduces the amount of manual participation in the gas distribution work, alleviates the manpower burden, and improves the accuracy of gas filling.

[0023] 2. The present invention installs a pressure sensor on the main road, and uses the pressure sensor to detect the air pressure on the main road. When the air pressure is too high, the control system can close the pneumatic valve and open the safety valve. At this time, the safety valve can be used to discharge the gas in the main road, thereby achieving the purpose of pressure relief, thereby improving the safety of the gas distribution process.

[0024] 3. By installing a vacuum pump on branch line 3, after one component gas enters the gas cylinder, the bottle valve and the pneumatic valve can be closed, and then the pneumatic valve 1 and the pneumatic valve 2 can be opened. At this time, the vacuum pump can be driven to transport the gas in the main line to the exhaust circuit. The vacuum gauge sensor can be used to monitor the vacuum degree of the main line to ensure the discharge of the component gas. Then, the pneumatic valve 1 and the pneumatic valve 2 are closed and the bottle valve and the pneumatic valve are opened to allow another component gas to enter the gas cylinder. Therefore, the phenomenon of inaccurate gas distribution ratio caused by the previous component gas remaining in the gas line can be avoided, thereby improving the accuracy and quality of gas distribution.

[0025] 4. By installing a throttle valve and a flow sensor on the main line, when the component gas enters the gas cylinder, the throttle valve can be used to limit the flow rate of the component gas, so that it enters the gas cylinder slowly, and the flow sensor can be used to detect the flow of the component gas, which makes it easier to control the amount of component gas entering the gas cylinder, thereby further improving the accuracy of the gas distribution ratio.

[0026] 5. By making the component gas movably connected to the pipeline, the component gas can be replaced after closing the manual valve. When the pipeline is connected to the component gas, the valve and the pneumatic valve can be opened to allow the component gas to enter the main line. Therefore, the configuration of multiple component gases can be realized, and the purpose of accepting more component gases can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a connection block diagram of Embodiment 1 of the present invention;

[0028] Figure 2 This is a connection block diagram of Embodiment 2 of the present invention;

[0029] Figure 3 This is a connection block diagram of Embodiment 3 of the present invention;

[0030] Figure 4 It is a connection block diagram of the control system of the present invention.

[0031] Among them, 1. Main road; 2. Branch road 1; 3. Branch road 4; 4. Branch road 2; 5. Branch road 3; 6. Waste discharge loop. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the specification 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.

[0033] Embodiment 1:

[0034] Please refer to the attached Figure 1 and Figure 4 The embodiment of the present invention provides a standard gas distribution gas circuit that is easy to replace, including: a main circuit 1, wherein a plurality of gas supply components are connected in the middle, which are used to transport the gas discharged by the gas supply components, and a pneumatic valve is installed in the gas supply component to control the outflow of gas; a gas cylinder, which is connected to the main circuit 1 and is used to collect the gas transported by the main circuit 1; a branch circuit 2, which is connected to a branch circuit 4 3, and one end of the branch circuit 4 3 is connected to a waste discharge circuit 6, and the waste discharge circuit 6 is in the waste gas pool; a pressure sensor, which is located on the main circuit 1 near the gas cylinder, and is used to monitor the gas circuit pressure, and a safety valve 1 is installed in the branch circuit 1 2, which is used to open the safety valve 1 to release the pressure when the gas circuit pressure is too high, and the gas supply component is between the pressure sensor and the branch circuit 4 3; an industrial computer, which is used to receive the pressure sensor data to control the opening and closing of the safety valve 1 and each pneumatic valve. A one-way valve is installed in the waste discharge circuit 6 to prevent the medium in the waste gas pool from entering the pipeline, and a bottle valve is installed at the mouth of the gas cylinder. The gas supply assembly includes component gases, which are connected to the main road 1 through pipelines, and a manual valve and a filter are installed on the pipelines, and a pneumatic valve is installed on the pipelines near the main road 1. The component gases are movably connected to the pipelines.

[0035] After the gas supply component is connected to the main road 1, multiple manual valves are opened at this time. Then, when gas distribution is needed, the pneumatic valve of one component gas is opened by the industrial computer. At this time, one component gas will enter the main road 1. At this time, the bottle valve is opened to allow the gas of this component to enter the gas cylinder. Then, the pneumatic valve is closed by the industrial computer. When another component gas needs to be transported to the gas cylinder, the pneumatic valve corresponding to the other component gas is opened. At this time, the other component gas will enter the gas cylinder along the main road 1, thereby realizing the configuration of multiple component gases. The air pressure in the main road 1 can be monitored in real time by the pressure sensor. When the pressure value in the main road 1 reaches the set upper limit, the industrial computer opens the safety valve 1 to release the pressure, thereby avoiding the safety hazard caused by excessive air pressure in the main road 1. Therefore, the industrial computer can be used to automatically complete the filling of gases of different components, thereby greatly reducing the amount of manual participation in the gas distribution work, reducing the manpower burden, and improving the accuracy of gas filling. After the filling is completed, the bottle valve is closed and the gas cylinder is removed to complete the filling. Gas, at the same time, by real-time monitoring of the air pressure of the main road 1, the industrial computer opens the safety valve 1 to release the pressure when the air pressure is too high, thereby improving the safety of gas filling, and the one-way valve can be used to allow the component gas to enter the waste gas pool along the exhaust circuit 6, but the medium in the waste gas pool can be prevented from entering the pipeline, and in the gas supply component, opening the manual valve can allow the component gas to enter the pipeline, opening the pneumatic valve can allow the component gas to enter the main road 1, and before the component gas enters the main road 1, it will first pass through the filter, and the filter can be used to filter and remove impurities for the component gas. At the same time, in the gas distribution, the manual valve is normally open. When the system is abnormal and the pneumatic valve cannot be closed, the valve can be manually closed to prevent accidents. Finally, the component gas and the pipeline are movably connected, and the pipeline can be connected to the pipeline using a quick connector, so the component gas cylinder can be quickly replaced, and when replacing the component gas, the manual valve is closed and the component gas is replaced. Therefore, when replacing the component gas, external gas can be prevented from entering the gas path, and it is also beneficial to replace the component gas.

[0036] Embodiment 2:

[0037] Please refer to the attached Figure 2 and Figure 4 , a throttle valve is installed on the main route 1, and the throttle valve is located between the pressure sensor and the bottle valve. The main route 1 is also provided with branch 2 4 and branch 3 5, and branch 2 4 is connected to branch 1 2. A pneumatic valve 3 is installed on branch 2 4, a pneumatic valve 2 and a vacuum pump are installed on branch 3 5, and a vacuum gauge sensor and a safety valve 2 are installed on branch 4 3. The safety valve 2 and the vacuum gauge sensor are close to the pneumatic valve 1, and the vacuum gauge sensor is located between the pneumatic valve 1 and the safety valve 2. The air supply component is located between branch 3 5 and branch 4 3, and branch 1 2, branch 3 5 and branch 4 3 are all connected to the exhaust circuit 6.

[0038] In this embodiment, on the basis of embodiment 1, a throttle valve is added to the main path 1, and a branch path 2 4 and a branch path 3 5 are added, and a pneumatic valve 3 is installed on the branch path 2 4, a pneumatic valve 2 and a vacuum pump are installed on the branch path 3 5, and a vacuum gauge sensor and a safety valve 2 are also installed on the branch path 4 3, and finally a throttle valve is installed on the main path 1. Therefore, after one component gas enters the gas cylinder, the pneumatic valve and the cylinder valve are closed, the pneumatic valve 2 and the pneumatic valve 1 are opened, and then the vacuum pump is driven to extract the component gas remaining in the main path 1 and make it enter the waste gas pool along the exhaust circuit 6. Therefore, it can be avoided that the upper component gas remains in the main path 1 and enters the gas cylinder with the downward moving component gas. Therefore, the accuracy of the ratio between the component gases can be improved, and in the process of vacuuming, the vacuum degree in the main path 1 can be detected by the vacuum gauge sensor. When the vacuum degree reaches a preset value After the value is reached, pneumatic valve 1 and pneumatic valve 2 are closed, and then the pneumatic valve on the component gas is opened to allow the component gas to enter the main route 1, and then the bottle valve is opened to allow the component gas to enter the gas cylinder, so the accuracy of the gas distribution ratio can be guaranteed. At the same time, the throttle valve can be used to slow down the flow rate of the component gas, so that it can enter the gas cylinder slowly, so it is convenient to regulate the amount of component gas entering the gas cylinder, and then the accuracy of the gas distribution ratio can be guaranteed. By replacing the throttle valve with a reducer, the gas flow rate can be reduced and the filling quality can be controlled conveniently. When the pressure detected by the pressure sensor is too low, it means that there is a gas leak somewhere in the gas circuit. At this time, the industrial computer automatically closes all valves immediately. If the pressure is too high, it means that there is an abnormality in the filling process or there is a fault somewhere in the gas circuit. The industrial computer automatically opens safety valve 1 and safety valve 2 to release the pressure to prevent safety accidents.

[0039] Embodiment 3:

[0040] Please refer to the attached Figure 3 and Figure 4 The main line 1 is also equipped with a flow sensor, and the flow sensor is located between the bottle valve and the throttle valve. The vacuum gauge sensor, flow sensor, pressure sensor, pneumatic valves and safety valves are all connected to the industrial computer.

[0041] In this embodiment, based on Example 2, a flow sensor is added between the throttle valve and the bottle valve. Therefore, after the component gas has its flow reduced by the throttle valve, the flow sensor can be used to detect the flow of the component gas again, thereby improving the accuracy of the flow sensor detection data.

[0042] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An easily replaceable standard gas distribution gas circuit system, characterized in that: include: A main path (1), wherein a plurality of gas supply components are connected in the middle thereof, and is used to transport the gas discharged from the gas supply components, wherein a pneumatic valve is installed in the gas supply component, and is used to control the outflow of the gas; A gas cylinder, which is connected to the main path (1) and is used to collect the gas delivered by the main path (1); Branch 1 (2), which is connected to branch 4 (3), one end of which is connected to a waste gas discharge circuit (6), and the waste gas discharge circuit (6) is located in the waste gas pool; A pressure sensor is located on the main circuit (1) near the gas cylinder and is used to monitor the gas circuit pressure. A safety valve 1 is installed in the branch circuit 1 (2) and is used to open the safety valve 1 to release the pressure when the gas circuit pressure is too high. The gas supply assembly is located between the pressure sensor and the branch circuit 4 (3); The industrial computer is used to receive data from the pressure sensor to control the opening and closing of the safety valve 1 and each pneumatic valve.

2. The easily replaceable standard gas distribution gas circuit system according to claim 1, characterized in that: A one-way valve is installed in the waste gas discharge circuit (6) to prevent the medium in the waste gas pool from entering the pipeline, and a bottle valve is installed at the mouth of the gas cylinder.

3. The easily replaceable standard gas distribution gas circuit system according to claim 2, characterized in that: The gas supply assembly comprises component gases, the component gases are connected to a main path (1) via a pipeline, a manual valve and a filter are installed on the pipeline, and the pneumatic valve is installed on the pipeline at a position close to the main path (1).

4. The easily replaceable standard gas distribution gas circuit system according to claim 1, characterized in that: The main path (1) is provided with a throttle valve, the throttle valve being located between the pressure sensor and the bottle valve. The main path (1) is also provided with a second branch path (4) and a third branch path (5), the second branch path (4) being connected to the first branch path (2).

5. The easily replaceable standard gas distribution gas circuit system according to claim 4, characterized in that: The second branch (4) is equipped with a pneumatic valve 3, the third branch (5) is equipped with a pneumatic valve 2 and a vacuum pump, and the fourth branch (3) is equipped with a vacuum gauge sensor and a safety valve 2.

6. The easily replaceable standard gas distribution gas circuit system according to claim 5, characterized in that: The safety valve 2 and the vacuum gauge sensor are close to the pneumatic valve 1 , and the vacuum gauge sensor is located between the pneumatic valve 1 and the safety valve 2 .

7. The easily replaceable standard gas distribution gas circuit system according to claim 4, characterized in that: The air supply assembly is located between branch three (5) and branch four (3), and branch one (2), branch three (5) and branch four (3) are all connected to the waste discharge circuit (6).

8. The easily replaceable standard gas distribution gas circuit system according to claim 6, characterized in that: The main path (1) is also equipped with a flow sensor, and the flow sensor is located between the bottle valve and the throttle valve.

9. The easily replaceable standard gas distribution gas circuit system according to claim 3, characterized in that: The component gases are movably connected to the pipeline.

10. The easily replaceable standard gas distribution gas circuit system according to claim 8, characterized in that: The vacuum gauge sensor, flow sensor, pressure sensor, pneumatic valves and safety valves are all connected to the industrial computer.

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