CN202661885U - High-accuracy automatic gas flow regulating device and specific surface area and pore size analyzer - Google Patents
High-accuracy automatic gas flow regulating device and specific surface area and pore size analyzer Download PDFInfo
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- CN202661885U CN202661885U CN 201220196010 CN201220196010U CN202661885U CN 202661885 U CN202661885 U CN 202661885U CN 201220196010 CN201220196010 CN 201220196010 CN 201220196010 U CN201220196010 U CN 201220196010U CN 202661885 U CN202661885 U CN 202661885U
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- mechanical valve
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Abstract
The utility model discloses a high-accuracy automatic gas flow regulating device and a specific surface area and pore size analyzer. The high-accuracy automatic gas flow regulating device comprises a gas inlet pipeline communicated with a gas source, wherein a high-precision mechanical valve is arranged on the gas inlet pipeline, an output end of the high-precision mechanical valve is connected to a gas flow controlled pipeline, and a control end of the high-precision mechanical valve is connected to a motor. The high-accuracy automatic gas flow regulating device further comprises a controller, a flow sensor is arranged on the gas flow controlled pipeline, the controller is electrically connected with the flow sensor and the motor, and the controller is used for reading a flow value monitored by the flow sensor and controlling the rotation of the motor according to a preset program inside the controller so as to regulate the opening degree of the high-precision mechanical valve. With the device, the cost can be greatly reduced while the precision of automatic gas flow regulation can be improved, and the working intensity of operators can be greatly reduced as manual operation is replaced by automatic control. Meanwhile, the utility model further provides a specific surface area and pore size analyzer using the device.
Description
Technical field
The utility model relates to technical field of measurement and test, especially a kind of high-precision gas automatic flow rate adjusting device and specific surface area and pore analysis instrument.
Background technology
Gas flow adjusting means is widely used in surveying instrument, and plays a part crucial.Gas flow adjusting means commonly used in the prior art has 1. mass-flow gas meter, 2. the mechanical type variable valve.But above-mentioned gas flow adjusting means all exists defective: 1. mass-flow gas meter can be realized automatic adjusting, but cost is high, and is because it is regulated for electromagnetism, and precision is low, repeatable poor simultaneously; 2. the degree of regulation of mechanical type variable valve is very high, but need manual adjustments, if the gas flow change is frequent, need a large amount of manpower of cost, also need to rely on simultaneously operator's experience in the operation, the error that easily causes operation produces the impact that can't eliminate to the measuring accuracy of whole instrument.
Therefore, need to provide a kind of high-precision gas automatic flow rate adjusting device, it both can pass through the Real-Time Monitoring gas flow, realized automatic adjusting gas flow, reduced operator's working strength, can guarantee the gas flow degree of regulation again.
Specific surface area and pore analysis instrument have the requirement of high-precision automatic in the prior art for the control of charge flow rate in addition.
The utility model content
The technical matters that (one) will solve
The technical problems to be solved in the utility model provides a kind of high-precision gas automatic flow rate adjusting device, and it can pass through the Real-Time Monitoring gas flow, realizes automatic adjusting gas flow, and can guarantee the precision that gas flow is regulated; The utility model also needs to provide a kind of specific surface area and the pore analysis instrument that can accurately automatically control gas flow simultaneously.
(2) technical scheme
In order to solve the problems of the technologies described above, the utility model provides a kind of high-precision gas automatic flow rate adjusting device, comprise: the air inlet pipeline that is communicated with source of the gas, be provided with the high-accuracy mechanical valve on the described air inlet pipeline, the output terminal of described high-accuracy mechanical valve is connected to the controlled pipeline of gas flow, and the control end of described high-accuracy mechanical valve is connected to motor;
Described high-precision gas automatic flow rate adjusting device also comprises controller, be provided with flow sensor on the controlled pipeline of described gas flow, described controller is electrically connected with described flow sensor and described motor, controller is used for reading the flow value of described flow sensor monitoring, according to the described electric machine rotation of its internal preset programmed control, thus the aperture of regulating described high-accuracy mechanical valve.
Preferred as technique scheme, described controller is PLC, PC or single-chip microcomputer.
Preferred as technique scheme, described motor is stepper motor.
Preferred as technique scheme is provided with stepper motor driver between described controller and the described stepper motor, and described controller is controlled the rotational angle of described stepper motor by described stepper motor driver according to pre-set programs transmitted signal.
Preferred as technique scheme, described motor is connected by shaft coupling with the control end of described high-accuracy mechanical valve.
The utility model also provides a kind of specific surface area and pore analysis instrument, it comprises above-mentioned high-precision gas automatic flow rate adjusting device, described high-precision gas automatic flow rate adjusting device is installed on the air inlet pipeline of described specific surface area and pore analysis instrument, is used for regulating automatically and accurately the gas flow of described air inlet pipeline.
(3) beneficial effect
A kind of high-precision gas automatic flow rate adjusting device that technique scheme provides, comprise: the air inlet pipeline that is communicated with source of the gas, be provided with the high-accuracy mechanical valve on the described air inlet pipeline, the output terminal of described high-accuracy mechanical valve is connected to the controlled pipeline of gas flow, and the control end of described high-accuracy mechanical valve is connected to motor; Described high-precision gas automatic flow rate adjusting device also comprises controller, be provided with flow sensor on the controlled pipeline of described gas flow, described controller is electrically connected with described flow sensor and described motor, controller is used for reading the flow value of described flow sensor monitoring, according to the described electric machine rotation of its internal preset programmed control, thus the aperture of regulating described high-accuracy mechanical valve.This device detects gas flow in real time by flow sensor, utilize controller to read the gas flow value and according to the aperture of pre-set programs application valve body in it, regulate the actual gas flow, greatly reduce cost when improving the precision of automatic gas flow regulation, robotization is regulated and is replaced manually-operated in addition, can greatly reduce operator's working strength.This installs preferred stepper motor simultaneously, can realize very low-angle adjustment, improves the gas flow degree of regulation.The utility model also provides a kind of specific surface area and pore analysis instrument.
Description of drawings
Fig. 1 is the structural representation of the high-precision gas automatic flow rate adjusting device that provides of the utility model embodiment;
Wherein, 1: controller; 2: flow sensor; 3: high-precision mechanical valve; 4: stepper motor; 5: shaft coupling; 6: air inlet pipeline; 7: the controlled pipeline of gas flow.
Embodiment
Below in conjunction with drawings and Examples, embodiment of the present utility model is described in further detail.Following examples are used for explanation the utility model, but are not used for limiting scope of the present utility model.
In conjunction with shown in Figure 1, the high-precision gas automatic flow rate adjusting device that it provides for the utility model embodiment, comprise: the air inlet pipeline 6 that is communicated with source of the gas, be provided with high-accuracy mechanical valve 3 on the air inlet pipeline 6, the output terminal of high-accuracy mechanical valve 3 is connected to the controlled pipeline 7 of gas flow, and (the controlled pipeline 7 of air inlet pipeline 6 and gas flow is seen the solid line that has arrow in the accompanying drawing, the direction of arrow represents the flow direction of air-flow), the control end of high-accuracy mechanical valve 3 is connected to motor 4.The high-precision gas automatic flow rate adjusting device also comprises controller 1, be provided with flow sensor 2 on the controlled pipeline 7 of gas flow, controller 1 is electrically connected (shown in dotted line in the accompanying drawing with flow sensor 2 and motor 4, expression electric control annexation), controller 1 is used for the flow value of reading flow quantity sensor 2 monitorings, rotate according to its internal preset program controlled motor 4, thus the aperture of regulating high-accuracy mechanical valve 3.This device detects in real time by 2 pairs of gas flows of flow sensor, utilize controller 1 to read the gas flow value and according to the aperture of pre-set programs application valve body in it, regulate the actual gas flow, greatly reduce cost when improving the precision of automatic gas flow regulation, robotization is regulated and is replaced manually-operated in addition, can greatly reduce operator's working strength.
Above-mentioned high-accuracy mechanical valve 3 optional accurate gas flow stabilizing valves.
The preferred controller 1 of the present embodiment is PLC, PC or single-chip microcomputer.Pre-set programs in controller 1 arranges accordingly according to the demand of actual testing tool to gas flow.Corresponding, motor 4 preferred stepper motors.Stepper motor can be controlled rotational angle accurately, reaches adjusting small variable quantity and degree of regulation high.
Be provided with stepper motor driver between controller 1 and the stepper motor, controller 1 is according to the rotational angle of pre-set programs transmitted signal by stepper motor driver control step motor.
Preferably, motor 4 is connected by shaft coupling 5 with the control end of high-accuracy mechanical valve 3.
The specific works principle of this device is: the flow sensor 2 that arranges on the controlled pipeline 7 of gas flow detects the gas flow that passes through in it in real time, and send signal in the controller 1, controller 1 judges according to its internal preset program whether gas flow is in required numerical value interval in the controlled pipeline 7 of current gas flow, when exceeding numerical range, pre-set programs changes in the corresponding solution program, thereby and the rotation of output regulating electric machine 1, comprise forward counter-rotating and concrete rotational angle, and then the aperture of regulating high-accuracy mechanical valve 3.When for example the gas flow value in the controlled pipeline 7 of current gas flow is lower than the preset value of testing tool needs, controller 1 sends command signal control step electric machine rotation, rotate corresponding angle the aperture of high-accuracy mechanical valve 3 is tuned up, thereby heighten gas flow in the controlled pipeline 7 of gas flow.Need not artificial intervention in this process, just can realize accurately real-time adjustment of high precision.
In addition, the present embodiment also provides a kind of specific surface area and pore analysis instrument, it comprises above-mentioned high-precision gas automatic flow rate adjusting device, the high-precision gas automatic flow rate adjusting device is installed on the air inlet pipeline of specific surface area and pore analysis instrument, is used for regulating automatically and accurately the gas flow of described air inlet pipeline.Using behind this kind high-precision gas automatic flow rate adjusting device can whole increasing specific surface area and measuring accuracy and the automaticity of pore analysis instrument, because the gas flow adjusting means of its use is regulated with respect to mechanical valve of the prior art, can automatically realize high-precision gas flow adjusting, laborer is freed from numerous and diverse Adjustment operation; And the mass-flow gas meter in the relative prior art, advantage is that cost is low, precision is high.
As can be seen from the above embodiments, a kind of high-precision gas automatic flow rate adjusting device that the utility model embodiment provides, comprise: the air inlet pipeline 6 that is communicated with source of the gas, be provided with high-accuracy mechanical valve 3 on the air inlet pipeline 6, the output terminal of high-accuracy mechanical valve 3 is connected to the controlled pipeline 7 of gas flow, and the control end of high-accuracy mechanical valve 3 is connected to motor 4; The high-precision gas automatic flow rate adjusting device also comprises controller 1, be provided with flow sensor 2 on the controlled pipeline 7 of gas flow, controller 1 is electrically connected with flow sensor 2 and motor 4, controller 1 is used for the flow value of reading flow quantity sensor 2 monitorings, rotate according to its internal preset program controlled motor 4, thus the aperture of regulating high-accuracy mechanical valve 3.This device detects in real time by 2 pairs of gas flows of flow sensor, utilize controller 1 to read the gas flow value and according to the aperture of pre-set programs application valve body in it, regulate the actual gas flow, greatly reduce cost when improving the precision of automatic gas flow regulation, robotization is regulated and is replaced manually-operated in addition, can greatly reduce operator's working strength.This installs preferred stepper motor simultaneously, can realize very low-angle adjustment, improves the gas flow degree of regulation.
The present embodiment also provides a kind of specific surface area and pore analysis instrument of using above-mentioned high-precision gas automatic flow rate adjusting device, it comprises above-mentioned high-precision gas automatic flow rate adjusting device, described high-precision gas automatic flow rate adjusting device is installed on the air inlet pipeline of specific surface area and pore analysis instrument, is used for regulating automatically and accurately the gas flow of described air inlet pipeline.By the high-precision gas automatic flow rate adjusting device being applied to the air inlet pipeline of specific surface area and pore analysis instrument, can regulate the actual gas flow of air inlet pipeline, greatly reduce cost when improving the precision of automatic gas flow regulation, robotization is regulated and is replaced manually-operated in addition, can greatly reduce operator's working strength, thus automaticity and the integrated testability precision of further increasing specific surface area and pore analysis instrument.
The above only is preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model know-why; can also make some improvement and replacement, these improvement and replacement also should be considered as protection domain of the present utility model.
Claims (6)
1. high-precision gas automatic flow rate adjusting device, it is characterized in that, comprise: the air inlet pipeline that is communicated with source of the gas (6), be provided with high-accuracy mechanical valve (3) on the described air inlet pipeline (6), the output terminal of described high-accuracy mechanical valve (3) is connected to the controlled pipeline of gas flow (7), and the control end of described high-accuracy mechanical valve (3) is connected to motor (4);
Described high-precision gas automatic flow rate adjusting device also comprises controller (1), be provided with flow sensor (2) on the controlled pipeline of described gas flow (7), described controller (1) is electrically connected with described flow sensor (2) and described motor (4), described controller (1) is used for reading the flow value of described flow sensor (2) monitoring, rotate according to the described motor of its internal preset programmed control (4), thus the aperture of regulating described high-accuracy mechanical valve (3).
2. high-precision flow self-checking device as claimed in claim 1 is characterized in that, described controller (1) is PLC, PC or single-chip microcomputer.
3. high-precision gas automatic flow rate adjusting device as claimed in claim 2 is characterized in that, described motor (4) is stepper motor.
4. high-precision gas automatic flow rate adjusting device as claimed in claim 3, it is characterized in that, be provided with stepper motor driver between described controller (1) and the described stepper motor, described controller (1) is controlled the rotational angle of described stepper motor by described stepper motor driver according to pre-set programs transmitted signal.
5. high-precision gas automatic flow rate adjusting device as claimed in claim 1 is characterized in that, described motor (4) is connected by shaft coupling (5) with the control end of described high-accuracy mechanical valve (3).
6. a specific surface area and pore analysis instrument, it is characterized in that, it comprises such as each described high-precision gas automatic flow rate adjusting device in the claim 1 to 5, described high-precision gas automatic flow rate adjusting device is installed on the air inlet pipeline of described specific surface area and pore analysis instrument, is used for regulating automatically and accurately the gas flow of described air inlet pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220196010 CN202661885U (en) | 2012-05-04 | 2012-05-04 | High-accuracy automatic gas flow regulating device and specific surface area and pore size analyzer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220196010 CN202661885U (en) | 2012-05-04 | 2012-05-04 | High-accuracy automatic gas flow regulating device and specific surface area and pore size analyzer |
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| Publication Number | Publication Date |
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| CN202661885U true CN202661885U (en) | 2013-01-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220196010 Expired - Fee Related CN202661885U (en) | 2012-05-04 | 2012-05-04 | High-accuracy automatic gas flow regulating device and specific surface area and pore size analyzer |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108490992A (en) * | 2018-05-21 | 2018-09-04 | 海南师范大学 | It is a kind of can function control fluid controller |
| CN111610294A (en) * | 2020-06-05 | 2020-09-01 | 安徽诺桥电力科技有限公司 | Automatic flow adjusting device and adjusting method for hydrogen hexafluoride tester |
| CN114324700A (en) * | 2021-12-15 | 2022-04-12 | 广州首诺科学仪器有限公司 | FID air feeder |
-
2012
- 2012-05-04 CN CN 201220196010 patent/CN202661885U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108490992A (en) * | 2018-05-21 | 2018-09-04 | 海南师范大学 | It is a kind of can function control fluid controller |
| CN108490992B (en) * | 2018-05-21 | 2021-10-29 | 海南师范大学 | Controller capable of functionally controlling fluid |
| CN111610294A (en) * | 2020-06-05 | 2020-09-01 | 安徽诺桥电力科技有限公司 | Automatic flow adjusting device and adjusting method for hydrogen hexafluoride tester |
| CN114324700A (en) * | 2021-12-15 | 2022-04-12 | 广州首诺科学仪器有限公司 | FID air feeder |
| CN114324700B (en) * | 2021-12-15 | 2024-06-04 | 广州首诺科学仪器有限公司 | FID air feeder |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Beijing Gold APP Technology Co.,Ltd. Document name: Notification of Termination of Patent Right |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130109 Termination date: 20160504 |
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| CF01 | Termination of patent right due to non-payment of annual fee |