CN212030817U - Portable low-micro-pressure calibrator - Google Patents
Portable low-micro-pressure calibrator Download PDFInfo
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- CN212030817U CN212030817U CN202021067846.4U CN202021067846U CN212030817U CN 212030817 U CN212030817 U CN 212030817U CN 202021067846 U CN202021067846 U CN 202021067846U CN 212030817 U CN212030817 U CN 212030817U
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Abstract
The utility model relates to a portable low minute-pressure check gauge. This pressure check gauge includes: an air pressure generator, an air storage tank, an air pressure switch and an electric pressure control valve module are arranged in the air storage tank; the output end of the built-in air pressure generator is connected with the inlet of the air storage tank, and the built-in air pressure generator is used for conveying the generated pressure to the air storage tank; an outlet of the air storage tank is connected with a first end of the air pressure switch, and a second end of the air pressure switch is connected with an input end of the electric pressure control valve module; the electric pressure control valve module is used for adjusting output pressure parameters; the output end of the electric pressure control valve module is connected with the first end of the first branch; and the second end of the first branch is connected with external equipment to be checked through a working interface. The utility model discloses can improve the convenience performance that the pressure check gauge used, reduce the cost of pressure check gauge simultaneously.
Description
Technical Field
The utility model relates to a pressure check-up field especially relates to a portable low minute-pressure check-up appearance.
Background
The pressure calibrator is used for calibrating pressure of various pressure transmitters, pressure sensors, pressure switches, differential pressure transmitters, digital pressure gauges and the like. In the prior art, a low-cost pressure calibrator is generally externally connected with an air source and manually controls pressure, and is inconvenient to use; the pressure calibrator with automatic pressure control and without external air source has relatively high cost and is not suitable for use in batch by manufacturers.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a portable low minute-pressure check gauge to improve the convenience performance that pressure check gauge used, reduce pressure check gauge's cost simultaneously.
In order to achieve the above object, the utility model provides a following scheme:
a portable low micro-pressure prover comprising: an air pressure generator, an air storage tank, an air pressure switch and an electric pressure control valve module are arranged in the air storage tank;
the output end of the built-in air pressure generator is connected with the inlet of the air storage tank, and the built-in air pressure generator is used for conveying the generated pressure to the air storage tank;
an outlet of the air storage tank is connected with a first end of the air pressure switch, and a second end of the air pressure switch is connected with an input end of the electric pressure control valve module; the electric pressure control valve module is used for adjusting output pressure parameters;
the output end of the electric pressure control valve module is connected with the first end of the first branch; and the second end of the first branch is connected with external equipment to be checked through a working interface.
Optionally, the method further includes: an electromagnetic valve;
the output end of the electric pressure control valve module is connected with the first end of the first branch circuit through the electromagnetic valve, the output end of the electric pressure control valve module is connected with the input end of the electromagnetic valve, and the output end of the electromagnetic valve is connected with the first end of the first branch circuit; the electromagnetic valve is used for smoothing the pressure fluctuation output by the electric pressure control valve module.
Optionally, the method further includes: a controller and a pressure sensor;
the output end of the electromagnetic valve is also connected with the first end of a second branch circuit, and the second end of the second branch circuit is connected with the pressure sensor;
the data output end of the pressure sensor is communicated with the controller, the controller is communicated with the control end of the electric pressure control valve module, and the controller is used for feeding back data monitored by the pressure sensor to the electric pressure control valve module.
Optionally, the input end of the controller is further connected to the air pressure switch, and the controller is configured to receive pressure data of the air storage tank monitored by the air pressure switch; the output end of the controller is also connected with the control end of the built-in air pressure generator, and the controller is used for controlling the on-off state of the built-in air pressure generator according to the pressure data of the air storage tank.
Optionally, the method further includes: a touch screen;
the touch screen is used for receiving a pressure set value input by a user;
the controller receives the output data of the touch screen, the output end of the controller is communicated with the electric pressure control valve module, and the controller is further used for feeding back the pressure set value to the electric pressure control valve module.
Optionally, the method further includes: a pressure indicator gauge;
the pressure indicator is connected to a pipeline between the output end of the electric pressure control valve module and the input end of the electromagnetic valve; the pressure indicator is used for monitoring pressure data of the input end of the electromagnetic valve.
Optionally, the built-in air pressure generator is a micro pressure pump, and the output pressure of the micro pressure pump is 0-0.5 MPa.
Optionally, the pressure parameter adjusting range of the electric pressure control valve module is 0-0.5MPa, and the checking pressure range of the external device to be checked is 0.1-0.4 MPa.
Optionally, the second end of the first branch comprises a standard meter working interface and a plurality of check meter working interfaces;
a standard meter stop switch valve is arranged on a pipeline connecting the standard meter working interface and the standard meter;
and a check meter stop switch valve is arranged on a pipeline connecting each check meter working interface and the corresponding check meter.
According to the utility model provides a concrete embodiment, the utility model discloses a following technological effect:
the utility model discloses an inside air supply pressure that generates of pressure generator need not external air supply pressure. And the utility model discloses an electronic accuse presses the pressure data of valve module automatic control output, realizes the automatic accurate control of low minute-pressure. Furthermore, the utility model discloses a portable low minute-pressure check gauge is small, light in weight.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 is a schematic structural view of the portable low-micro pressure calibrator of the present invention.
Reference numbers in the figures: 1-built-in air pressure generator, 2-air storage tank, 3-air pressure switch, 4-electric pressure control valve module, 5-pressure indicator, 6-standard meter stop switch valve, 7-standard meter, 8-electromagnetic valve, 9-first check meter stop switch valve, 10-first check meter, 11-second check meter stop switch valve, 12-second check meter, 13-pressure sensor, 14-third check meter stop switch valve and 15-third check meter.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
Fig. 1 is a schematic structural view of the portable low-micro pressure calibrator of the present invention. As shown in fig. 1, the portable low micro-pressure calibrator of the present invention comprises: the device comprises a built-in air pressure generator 1, an air storage tank 2, an air pressure switch 3 and an electric pressure control valve module 4.
The output end of the built-in air pressure generator 1 is connected with the inlet of the air storage tank 2, and the built-in air pressure generator 1 is used for conveying the generated pressure to the air storage tank 2. The built-in air pressure generator 1 is a micro pressure pump, and the output pressure is 0-0.5 MPa.
The outlet of the gas storage tank 2 is connected with the first end of the air pressure switch 3, and the second end of the air pressure switch 3 is connected with the input end of the electric pressure control valve module 4. And the electric pressure control valve module 4 is used for adjusting the output pressure parameter.
The output end of the electric pressure control valve module 4 is connected with the first end of the first branch; and the second end of the first branch is connected with external equipment to be checked through a working interface. The pressure parameter adjusting range of the electric pressure control valve module 4 is 0-0.5MPa, and the checking pressure range of the external equipment to be checked is 0.1-0.4 MPa. The second end of the first branch comprises a standard meter working interface and a plurality of check meter working interfaces. As shown in fig. 1, a standard meter working interface and 3 calibration meter working interfaces are taken as examples in the figure, and a standard meter stop switch valve 6 is arranged on a pipeline connecting the standard meter working interface and the standard meter 7. A check meter stop switch valve is arranged on a pipeline connecting each check meter working interface and the corresponding check meter, and in the figure, a first check meter stop switch valve 9 is arranged on a pipeline between the first check meter 10 and the first check meter working interface; a second check meter stop switch valve 11 is arranged on a pipeline between the second check meter 12 and the second check meter working interface; a third check meter stop switch valve 14 is arranged on a pipeline between the third check meter 15 and the third check meter working interface. During use, the standard meter 7 can be arranged as required, the on-off state can be switched by the standard meter stop switch valve 6, the other three check meter stop switch valve interfaces theoretically support the simultaneous checking of at most three check meters, the check meter stop switch valves corresponding to the first check meter 10, the second check meter 12 and the third check meter 15 can be selected to realize the one-to-one switching of the on-off states, and the operation and the replacement are convenient.
On the basis of the above embodiment, as another embodiment, the utility model discloses a portable low micro-pressure calibrator still includes: and an electromagnetic valve 8. The output of electronic accuse pressure valve module 4 passes through solenoid valve 8 is connected the first end of first branch road, electronic accuse pressure valve module 4 the output with solenoid valve 8's input is connected, solenoid valve 8's output with the first end of first branch road is connected. When the pressure output by the electric pressure control valve module 4 is subjected to large-amplitude overshoot and fluctuation caused by rapid rise and fall, the electromagnetic valve 8 is used for smoothing the pressure fluctuation output by the electric pressure control valve module 4.
On the basis of the above embodiment, as another embodiment, the utility model discloses a portable low micro-pressure calibrator still includes: a controller and a pressure sensor 13. The output end of the electromagnetic valve 8 is further connected with the first end of a second branch, and the second end of the second branch is connected with the pressure sensor 13. The pressure sensor 13 is a digital pressure sensor for control. The data output end of the pressure sensor 13 is communicated with the controller, the controller is communicated with the control end of the electric pressure control valve module 4, and the controller is used for feeding back data monitored by the pressure sensor 13 to the electric pressure control valve module 4.
The input end of the controller is also connected with the air pressure switch 3, and the controller is used for receiving the pressure data of the air storage tank 2 monitored by the air pressure switch 3. The output end of the controller is also connected with the control end of the built-in air pressure generator 1, and the controller is used for controlling the on-off state of the built-in air pressure generator 1 according to the pressure data of the air storage tank 2.
On the basis of the above embodiment, as another embodiment, the utility model discloses a portable low micro-pressure calibrator still includes: a touch screen. The touch screen is used for receiving a pressure set value input by a user. The controller receives the output data of the touch screen, the output end of the controller is communicated with the electric pressure control valve module 4, and the controller is further used for feeding back the pressure set value to the electric pressure control valve module 4.
On the basis of the above embodiment, as another embodiment, the utility model discloses a portable low micro-pressure calibrator still includes: pressure indicator table 5. The pressure indicator 5 is connected to a pipeline between the output end of the electric pressure control valve module 4 and the input end of the electromagnetic valve 8; the pressure indicator 5 is used for monitoring pressure data at the input end of the electromagnetic valve 8.
The utility model discloses a portable low minute-pressure check gauge's working process as follows:
after the operator installs the equipment to be verified on the standard meter 7, the first verification meter 10, the second verification meter 12 and the third verification meter 15 according to the requirements on the external interface of the equipment, the power supply is switched on. And setting a pressure point numerical value to be verified on an HMI (human machine interface) end page, or inputting a pressure set value on a touch screen, and starting work when the controller receives verification data. Firstly, detecting whether sufficient pressure exists in the air storage tank or not by an air pressure switch, and if the pressure is insufficient, controlling a built-in miniature pressure pump to start pressure pumping; if the pressure is enough, subsequent control is allowed, and the electric pressure control valve module automatically controls the output pressure according to the pressure point value set by the HMI or the pressure set value input by the touch screen. The whole process can observe the pressure condition through the pressure indicator 5. And the upper computer control system sends a pressure control instruction, the switch electromagnetic valve is opened, and the digital pressure sensor is used for controlling to carry out real-time monitoring and feedback, so that the internal work of the equipment is ready. The pressure sensor is communicated with the controller to be used as a source for providing data for the automatic pressure control by the high-precision standard device, a closed-loop pressure control output of a self-writing algorithm is formed and is output to each interface, and the calibration is started. The utility model discloses portable low minute-pressure check gauge's check-up pressure range does: 0.1-0.4 MPa; pressure control range: 0-0.5 MPa; the problem of generating air source pressure through the inside of the pressure generator and automatically and accurately controlling low micro pressure. The method comprises the steps of inputting target pressure on a touch screen, carrying out high-speed real-time communication by using a controller and a similar pressure sensor product, monitoring the change state of the pressure, transmitting pressure data to the controller for error comparison, and realizing automatic closed-loop pressure control by adopting a motor to drive a precision pressure controller. The product solves the problem of no need of external air source pressure, and realizes automatic control of pressure of 0.1-0.4Mpa in low-micro pressure range. The processing precision of the algorithm carried out in the controller can reach 0.2-0.5 level. The product also has small volume and light weight.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The principle and the implementation of the present invention are explained herein by using specific examples, and the above description of the embodiments is only used to help understand the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present specification should not be construed as a limitation of the present invention.
Claims (9)
1. A portable low micro-pressure check gauge, comprising: an air pressure generator, an air storage tank, an air pressure switch and an electric pressure control valve module are arranged in the air storage tank;
the output end of the built-in air pressure generator is connected with the inlet of the air storage tank, and the built-in air pressure generator is used for conveying the generated pressure to the air storage tank;
an outlet of the air storage tank is connected with a first end of the air pressure switch, and a second end of the air pressure switch is connected with an input end of the electric pressure control valve module; the electric pressure control valve module is used for adjusting output pressure parameters;
the output end of the electric pressure control valve module is connected with the first end of the first branch; and the second end of the first branch is connected with external equipment to be checked through a working interface.
2. The portable low micro-pressure prover of claim 1 further comprising: an electromagnetic valve;
the output end of the electric pressure control valve module is connected with the first end of the first branch circuit through the electromagnetic valve, the output end of the electric pressure control valve module is connected with the input end of the electromagnetic valve, and the output end of the electromagnetic valve is connected with the first end of the first branch circuit; the electromagnetic valve is used for smoothing the pressure fluctuation output by the electric pressure control valve module.
3. The portable low micro-pressure prover of claim 2 further comprising: a controller and a pressure sensor;
the output end of the electromagnetic valve is also connected with the first end of a second branch circuit, and the second end of the second branch circuit is connected with the pressure sensor;
the data output end of the pressure sensor is communicated with the controller, the controller is communicated with the control end of the electric pressure control valve module, and the controller is used for feeding back data monitored by the pressure sensor to the electric pressure control valve module.
4. The portable low micro-pressure calibrator according to claim 3, wherein the input terminal of the controller is further connected to the air pressure switch, and the controller is configured to receive pressure data of the air storage tank monitored by the air pressure switch; the output end of the controller is also connected with the control end of the built-in air pressure generator, and the controller is used for controlling the on-off state of the built-in air pressure generator according to the pressure data of the air storage tank.
5. The portable low micro-pressure prover of claim 3 further comprising: a touch screen;
the touch screen is used for receiving a pressure set value input by a user;
the controller receives the output data of the touch screen, the output end of the controller is communicated with the electric pressure control valve module, and the controller is further used for feeding back the pressure set value to the electric pressure control valve module.
6. The portable low micro-pressure prover of claim 2 further comprising: a pressure indicator gauge;
the pressure indicator is connected to a pipeline between the output end of the electric pressure control valve module and the input end of the electromagnetic valve; the pressure indicator is used for monitoring pressure data of the input end of the electromagnetic valve.
7. The portable low micro-pressure calibrator according to claim 1, wherein the built-in air pressure generator is a micro pressure pump, and the output pressure of the micro pressure pump is 0-0.5 MPa.
8. The portable low-micro-pressure calibrator according to claim 1, wherein the pressure parameter adjusting range of the electric pressure control valve module is 0-0.5MPa, and the calibration pressure range of the external equipment to be calibrated is 0.1-0.4 MPa.
9. The portable low micro-pressure calibrator according to claim 1, wherein the second end of the first branch comprises a standard meter interface and a plurality of calibration meter interfaces;
a standard meter stop switch valve is arranged on a pipeline connecting the standard meter working interface and the standard meter;
and a check meter stop switch valve is arranged on a pipeline connecting each check meter working interface and the corresponding check meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021067846.4U CN212030817U (en) | 2020-06-11 | 2020-06-11 | Portable low-micro-pressure calibrator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021067846.4U CN212030817U (en) | 2020-06-11 | 2020-06-11 | Portable low-micro-pressure calibrator |
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| CN212030817U true CN212030817U (en) | 2020-11-27 |
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| CN202021067846.4U Active CN212030817U (en) | 2020-06-11 | 2020-06-11 | Portable low-micro-pressure calibrator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112525417A (en) * | 2020-12-16 | 2021-03-19 | 中国航空工业集团公司金城南京机电液压工程研究中心 | Pressure divider for pressure system calibration |
-
2020
- 2020-06-11 CN CN202021067846.4U patent/CN212030817U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112525417A (en) * | 2020-12-16 | 2021-03-19 | 中国航空工业集团公司金城南京机电液压工程研究中心 | Pressure divider for pressure system calibration |
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