CN216621599U - Pressure measuring instrument calibrating device - Google Patents
Pressure measuring instrument calibrating device Download PDFInfo
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- CN216621599U CN216621599U CN202220242812.7U CN202220242812U CN216621599U CN 216621599 U CN216621599 U CN 216621599U CN 202220242812 U CN202220242812 U CN 202220242812U CN 216621599 U CN216621599 U CN 216621599U
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Abstract
A pressure measuring instrument calibration device comprises a shell, an air supply part and a control part; the air supply part comprises an interface, the interface is used for communicating with a measured instrument, the air supply part provides air with a standard air pressure value to the measured instrument through the interface, and the measured instrument measures a measurement reading; the control part controls the gas supply part, and the control part comprises an operation end used for operating the control part; the air supply part is arranged in the shell, the interface is arranged on the surface of the shell and is exposed, the control part is arranged in the shell, the operation end is arranged on the surface of the shell and is exposed, and the shell is provided with a temperature and humidity regulator which is used for regulating the temperature and humidity in the shell. The pressure measurement instrument calibration device adjusts the temperature and humidity in the shell through the temperature and humidity adjuster, meets the requirements of calibration work on the environment temperature and humidity, and improves the quality of the calibration work.
Description
Technical Field
The utility model relates to a metering technology, in particular to a pressure measuring instrument calibration device.
Background
Pressure measuring instruments such as pressure gauges, pressure sensors, pressure transmitters, digital pressure gauges and the like are widely applied in the industrial field. According to the requirements of related national measurement regulations and the requirements of enterprises, the pressure measuring instrument needs to be calibrated according to a certain period so as to ensure the measurement characteristics of the pressure measuring instrument. In the implementation process of the calibration work of the pressure measuring instrument, the work efficiency and the work quality are always required to be continuously improved so as to meet the work requirement, and therefore higher requirements are provided for the calibration device.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a pressure measuring instrument calibration device which is used for improving the quality of calibration work of a pressure measuring instrument.
According to an embodiment of the present invention, the pressure measurement instrument calibration apparatus includes a housing, a gas supply portion, and a control portion;
the air supply part comprises an interface, the interface is used for communicating with a measured instrument, the air supply part provides air with a standard air pressure value to the measured instrument through the interface, and the measured instrument measures a measurement reading;
the control part controls the gas supply part, and the control part comprises an operation end used for operating the control part;
the air supply part is arranged in the shell, the interface is arranged on the surface of the shell and is exposed, the control part is arranged in the shell, the operation end is arranged on the surface of the shell and is exposed, and the shell is provided with a temperature and humidity regulator which is used for regulating the temperature and humidity in the shell.
In one or more embodiments, the gas supply is supplied by a gas source, the gas supply further comprising tubing, a pressure standard, and a switch;
the pressure standard device outputs the gas with the standard air pressure value, and the control part controls the standard air pressure value of the pressure standard device to obtain the standard air pressure value and display the standard air pressure value at the operation end;
the control part controls the switch to obtain the working state information of the switch and display the working state information at the operation end;
the gas source, the pressure standard, the switch and the interface are communicated in sequence through the pipe fitting;
the number of the interfaces is multiple, each interface is provided with one switch, and the gas with the standard pressure value is divided behind the pressure standard device.
In one or more embodiments, the gas supply part further comprises a first overvoltage protector, the first overvoltage protector is arranged between the gas source and the pressure standard, and the on-off between the pressure standard and the gas source is controlled according to the pressure;
the control part controls the first overvoltage protector to obtain the working state information of the first overvoltage protector and display the working state information at the operating end.
In one or more embodiments, the gas supply part further comprises a second overvoltage protector, the second overvoltage protector is arranged between the pressure standard and the switch, and the on-off between the pressure standard and the switch is controlled according to the pressure;
the control part controls the second overvoltage protector to obtain the working state information of the second overvoltage protector and display the working state information at the operating end.
In one or more embodiments, the gas supply part further comprises a second overvoltage protector, the second overvoltage protector is arranged between the pressure standard and the switch, and the on-off between the pressure standard and the switch is controlled according to the pressure;
the control part controls the second overvoltage protector to obtain the working state information of the second overvoltage protector and display the working state information at the operating end.
In one or more embodiments, the control portion is further configured to obtain the standard air pressure value and the measurement reading, and output and display a calibration result at the operation end according to the standard air pressure value and the measurement reading.
In one or more embodiments, the operation terminal is a touch display screen.
In one or more embodiments, the temperature and humidity regulator is an air conditioner, and the air conditioner is detachably connected with the casing.
In one or more embodiments, the housing is provided by a box with self-locking rollers at the bottom.
The embodiment of the utility model has at least one of the following beneficial effects:
1. the temperature and humidity in the shell are adjusted through the temperature and humidity adjuster, so that the requirement of calibration work on the temperature and humidity of the environment is met, and the calibration work quality is improved.
2. The first overpressure protector is used for protecting the pressure standard device from overpressure, so that the pressure standard device is prevented from being damaged due to overhigh pressure.
3. And the second overvoltage protector is used for implementing overvoltage protection on the measured instrument, so that the measured instrument is prevented from being damaged due to overhigh pressure.
4. A plurality of interfaces are integrated, the measured instruments with a plurality of different measuring ranges can be calibrated at the same time, and the calibration efficiency is high.
5. Information and operation are concentrated on the touch display screen, an operator can conveniently and intensively read the information and operate the information, time difference does not exist, and working efficiency is improved.
Drawings
The above and other features, properties and advantages of the present invention will become more apparent from the following description of the embodiments with reference to the accompanying drawings, in which:
FIG. 1 is a schematic diagram of a pressure measurement instrument calibration apparatus;
FIG. 2 is a schematic structural diagram of a pressure measurement instrument calibration device;
reference numerals:
1-gas source;
2-interface;
3-a first overvoltage protector;
4-a second overvoltage protector;
5-a pressure standard;
6-a switch;
7-branch;
8-a control section;
9-a data acquisition unit;
10-a box body;
11-self-locking rollers;
12-a separator;
13-a first region;
14-a second region;
15-a third region;
16-external pore canal;
17-a measured instrument mounting platform;
18-touch display screen;
19-air conditioning;
20-pressure measuring instrument calibration means;
21-control console.
Detailed Description
The present invention is further described in the following description with reference to specific embodiments and the accompanying drawings, wherein the details are set forth in order to provide a thorough understanding of the present invention, but it is apparent that the present invention can be embodied in many other forms different from those described herein, and it will be readily appreciated by those skilled in the art that the present invention can be implemented in many different forms without departing from the spirit and scope of the utility model.
It is noted that these and other figures which follow are merely exemplary and not drawn to scale and should not be considered as limiting the scope of the utility model as it is actually claimed.
The terms "first", "second" and "first" may be used interchangeably to distinguish one feature from another, and are not intended to indicate that the various features must be located as shown in the figures in various embodiments.
Fig. 1 is a block diagram showing the principle of a pressure measuring instrument calibration device 20, fig. 1 does not show a housing, fig. 2 is a schematic view showing the structure of the pressure measuring instrument calibration device 20, and in fig. 2, some elements of a gas supply portion and a control portion 8 are not shown.
The pressure measuring instrument calibration device 20 includes a housing, a gas supply portion, and a control portion 8.
As shown in FIG. 1, the gas supply part is supplied with gas by a gas source 1, and the gas source 1 is from the outside of the pressure measuring instrument calibration device 20 and is a pressure gas cylinder or other pressurizing device externally connected with the pressure measuring instrument calibration device 20. In another embodiment or embodiments, the gas source 1 is part of a pressure measurement instrument calibration device 20, for example, the gas source 1 is a pressure gas cylinder disposed inside a housing.
As shown in fig. 1, the gas supply portion includes a connector 2, a pipe, a first overvoltage protector 3, a second overvoltage protector 4, a pressure standard 5, and a switch 6, and the gas source 1, the first overvoltage protector 3, the pressure standard 5, the second overvoltage protector 4, the switch 6, and the connector 2 are sequentially communicated through the pipe.
The interface 2 is used for communicating with the measured instrument, and the air supply part supplies air with a standard air pressure value to the measured instrument through the interface 2, so that the measured instrument communicated with the interface 2 measures measurement readings. The number of the interfaces 2 is multiple, specifically 4 as shown in fig. 1, each interface 2 is provided with a second overvoltage protector 4 and a switch 6, one second overvoltage protector 4, one switch 6 and one interface 2 form a branch 7, the number of the branches 7 is identical to that of the interfaces 2, the number of the branches is 4, and gas with standard pressure value is divided after the pressure standard 5 and flows to each branch 7.
The calibration of the measured instrument usually has large workload, the efficiency is too low, the timeliness and the cost of the calibration work are influenced, the pressure measuring instrument calibration device 20 integrating a plurality of interfaces 2 can calibrate the measured instruments with different measuring ranges at the same time, and the calibration efficiency is high.
Specifically, the air provided by the air source 1 flows to the first overvoltage protector 3, and the first overvoltage protector 3 controls the on-off between the pressure standard 5 and the air source 1 according to the pressure to implement overvoltage protection on the pressure standard 5. First overvoltage protector 3 normally opens, intercommunication between pressure standard 5 and air supply 1, first overvoltage protector 3 has the first pressure parameter that sets up according to the measuring range of pressure standard 5, when the pressure of gas is greater than the first pressure parameter of setting, trigger first overvoltage protector 3 valve and close, disconnection between pressure standard 5 and air supply 1, first pressure parameter includes malleation value and negative pressure value, it is the condition of negative pressure to correspond air feed pressure for malleation and air feed pressure respectively, when air feed malleation pressure is greater than the malleation value, trigger first overvoltage protector 3 valve and close, when air feed negative pressure is less than the negative pressure value, trigger first overvoltage protector 3 valve and close. The first overvoltage protection 3 is, for example, an electrically operated valve with an emergency shut-off function.
The pressure standard 5 has a specified measuring range, the pressure standard 5 is damaged due to the fact that the air pressure supplied by the air source 1 is too high, the first pressure parameter of the first overvoltage protector 3 can be adjusted and set according to the measuring range of the pressure standard 5, overvoltage protection is conducted on the pressure standard 5, and the pressure standard 5 is prevented from being damaged due to the fact that the air supply pressure of the air source 1 is too high.
The air passing through the first overpressure protector 3 flows to the pressure standard 5, the pressure standard 5 has a set standard air pressure value, and the air having the standard air pressure value is output through the pressure standard 5. The pressure standard 5 is, for example, a pressure controller.
The gas with the standard pressure value is branched off behind the pressure standard 5 and flows to the respective branch 7, in particular to the second overvoltage protection 4 in the branch 7. The second overvoltage protector 4 controls the on-off between the pressure standard 5 and the switch 6 according to the pressure so as to implement overvoltage protection on the measured instrument connected to the interface 2. Second overvoltage protector 4 normally opens, communicate between pressure standard 5 and switch 6, second overvoltage protector 4 has the second pressure parameter that sets up according to the measuring range of being surveyed the appearance, when the pressure of gas is greater than the second pressure parameter that sets up, trigger second overvoltage protector 4 valve and close, disconnection between pressure standard 5 and switch 6, the second pressure parameter includes malleation value and negative pressure value, it is the condition of negative pressure for malleation and air feed pressure to correspond air feed pressure respectively, when air feed malleation pressure is greater than the malleation value, trigger second overvoltage protector 4 valve and close, when air feed negative pressure is less than the negative pressure value, trigger second overvoltage protector 4 valve and close. The second overvoltage protection 4 is, for example, an electrically operated valve with an emergency shut-off function.
The measured instrument has a specified measurement range, the measured instrument is damaged due to the fact that the standard air pressure value of the air output by the pressure standard instrument 5 is too high, the second pressure parameter of the second overvoltage protector 4 can be adjusted and set according to the measurement range of the measured instrument, overvoltage protection is conducted on the measured instrument, and the fact that the pressure standard instrument 5 is damaged due to the fact that the standard air pressure value of the air output by the pressure standard instrument 5 is too high is avoided.
The second overvoltage protector 4 is connected with the switch 6 through air flow, the switch 6 is an electric valve, and the on-off between the second overvoltage protector 4 and the interface 2 is controlled. The switch 6 is normally closed, the second overvoltage protector 4 is disconnected with the interface 2, when the tested instrument is communicated with the interface 2 for calibration, the switch 6 is opened under the control of the control part 8, the second overvoltage protector 4 is communicated with the interface 2, and air flows to the interface 2 and then flows to the tested instrument through the interface 2.
The control unit 8 controls the air supply unit. The control part 8 controls the first overvoltage protector 3 and obtains information on the operating state thereof, and specifically, the control part 8 sets a first pressure parameter of the first overvoltage protector 3 and obtains information on the on-off state of the first overvoltage protector 3. The control section 8 controls the second overvoltage protection device 4 and obtains information on the operating state thereof, and specifically, the control section 8 sets a second pressure parameter of the second overvoltage protection device 4 and obtains information on the on-off state of the second overvoltage protection device 4. The control section 8 controls the pressure standard 5 and obtains the operating state information thereof, and specifically, the control section 8 sets the standard pressure value of the pressure standard 5 and obtains the pressure standard value. The control section 8 controls the switch 6 and obtains the operating state information thereof, specifically, the control section 8 controls the opening and closing of the switch 6 and obtains the opening and closing state information of the switch 6. The control part 8 obtains the working state information of the measured instrument, specifically, the control part 8 obtains the measurement reading of the measured instrument through the data acquisition unit 9, and the data acquisition unit 9 is, for example, a current voltmeter obtaining the output electric signal of the measured instrument representing the measurement reading. Based on the obtained standard pressure value of the pressure standard 5 and the measurement reading of the instrument to be measured, the control section 8 outputs the calibration result.
The control section 8 includes an operation terminal for operating the control section 8 and displaying the operation state information and the calibration result. Specifically, the operation end is a touch display screen 18, the touch display screen 18 obtains and displays the above-mentioned operating state information from the control part 8, the displayed operating state information includes the on-off state information of the first overvoltage protector 3, the standard pressure value of the pressure standard 5, the on-off state information of the second overvoltage protector 4, the on-off state information of the switch 6 and the measurement reading of the measured instrument, and the calibration result is also output to the touch display screen 18 by the control part 8 and displayed. The operator operates the control section 8 by touching the display screen 18 to set the first pressure parameter of the first overvoltage protector 3, the second pressure parameter of the second overvoltage protector 4, the standard pressure value of the pressure standard 5, and controls the switch 6 to be turned on and off.
Information and operation are concentrated on the touch display screen 18, so that an operator can conveniently and intensively read the information and operate the information without time difference, and the working efficiency is improved.
As shown in fig. 2, the housing is provided by a case 10 having a self-locking roller 11 at the bottom, and four self-locking rollers 11 are provided at the bottom of the case 10, which facilitates the operator to move the pressure measuring instrument calibration device 20 and lock the self-locking rollers 11 to hold the pressure measuring instrument calibration device 20 when performing the calibration work.
The gas supply portion is in the housing, and the mouthpiece 2 is exposed at the surface of the housing. Specifically, the inside baffle 12 that has of box 10, baffle 12 divides box 10 into three regions on vertical, by supreme first region 13, second region 14 and third region 15 respectively, first region 13 holds the pipe fitting of air feed portion, first region 14 holds first overvoltage protector 3 and pressure standard 5, third region 15 holds second overvoltage protector 4, switch 6 and joint 2, wherein, for making things convenient for external air supply 1, be provided with external pore 16 on the box wall of first region 13, in addition, for making the appearance 2 that is surveyed can communicate interface 2, interface 2 exposes at the top platform face of box 10, form surveyed appearance installation platform 17.
The control portion 8 is in the housing, and the operation end is exposed on the surface of the housing. Specifically, a touch display screen 18 as an operation end is mounted on an inclined upper surface of the casing 10 to form a console 21 inclined toward the operator for the operator to read information and perform operations.
The shell is provided with a temperature and humidity regulator for regulating the temperature and humidity in the shell. Specifically, the temperature humidity controller is an air conditioner 19, and the air conditioner 19 is detachably connected to the housing, and more specifically, the air conditioner 19 is disposed on the back of the box 10 and detachably connected to the back plate of the box 10.
Besides being carried out in a laboratory, the calibration work of the measured instrument needs to be carried out in an actual field in some cases. The calibration work of the measured instrument needs to be carried out under a certain temperature and humidity environment, a laboratory can often meet the requirements of the environment temperature and humidity, an actual field cannot be guaranteed, the longitude and latitude of a region, the altitude of the region, the season and the like are uncontrollable factors influencing the environment temperature and humidity, the calibration work is carried out under the temperature and humidity environment which does not reach the standard, the accuracy of the calibration work cannot be guaranteed, for example, the accuracy of the pressure standard 5 is influenced by the environment temperature which exceeds the permission of the pressure standard 5, and the accuracy of the calibration work is further influenced. The air conditioner 19 can adjust the temperature and humidity in the box body 10, provide up-to-standard environment temperature and humidity for calibration work, and guarantee the precision of the calibration work. The air conditioner 19 is assembled on the box body 10 and used under the environment temperature and humidity which do not reach the standard, and the air conditioner 19 can be selectively disassembled under the environment temperature and humidity which reach the standard so as to reduce the weight.
The pressure measuring instrument calibration device 20 further comprises a power supply, and the pressure measuring instrument calibration device 20 and the measured instrument are powered by the power supply.
Although the present invention has been described with reference to the above embodiments, it is not intended to limit the present invention, and those skilled in the art may make variations and modifications without departing from the spirit and scope of the present invention.
Claims (9)
1. A pressure measuring instrument calibration device is characterized by comprising a shell, an air supply part and a control part;
the air supply part comprises an interface, the interface is used for communicating with a measured instrument, the air supply part provides air with a standard air pressure value to the measured instrument through the interface, and the measured instrument measures a measurement reading;
the control part controls the gas supply part, and the control part comprises an operation end used for operating the control part;
the air supply part is arranged in the shell, the interface is arranged on the surface of the shell and is exposed, the control part is arranged in the shell, the operation end is arranged on the surface of the shell and is exposed, and the shell is provided with a temperature and humidity regulator which is used for regulating the temperature and humidity in the shell.
2. The pressure measurement instrument calibration device of claim 1, wherein the gas supply is supplied by a gas source, the gas supply further comprising tubing, a pressure standard, and a switch;
the pressure standard device outputs the gas with the standard air pressure value, and the control part controls the standard air pressure value of the pressure standard device to obtain the standard air pressure value and display the standard air pressure value at the operation end;
the control part controls the switch to obtain the working state information of the switch and display the working state information at the operation end;
the gas source, the pressure standard, the switch and the interface are communicated in sequence through the pipe fitting;
the number of the interfaces is multiple, each interface is provided with one switch, and the gas with the standard air pressure value is divided behind the pressure standard device.
3. The pressure measurement instrument calibration device according to claim 2, wherein the gas supply portion further comprises a first overvoltage protector, the first overvoltage protector is arranged between the gas source and the pressure standard, and the pressure standard is controlled to be switched on and off according to pressure;
the control part controls the first overvoltage protector to obtain the working state information of the first overvoltage protector and display the working state information at the operating end.
4. The pressure measurement instrument calibration device of claim 3, wherein the gas supply further comprises a second over-pressure protector, the second over-pressure protector is arranged between the pressure standard and the switch, and the on-off between the pressure standard and the switch is controlled according to the pressure;
the control part controls the second overvoltage protector to obtain the working state information of the second overvoltage protector and display the working state information at the operating end.
5. The pressure measurement instrument calibration device of claim 2, wherein the gas supply further comprises a second over-pressure protector, the second over-pressure protector is arranged between the pressure standard and the switch, and the on-off between the pressure standard and the switch is controlled according to the pressure;
the control part controls the second overvoltage protector to obtain the working state information of the second overvoltage protector and display the working state information at the operating end.
6. The pressure measurement instrument calibration device of claim 1, wherein the control section is further configured to obtain the standard air pressure value and the measurement reading, and output a calibration result therefrom for display at the operation end.
7. The pressure measurement instrument calibration device according to any one of claims 1 to 6, wherein the operating end is a touch display screen.
8. The calibration device for a pressure measuring instrument according to claim 1, wherein the temperature and humidity regulator is an air conditioner, and the air conditioner is detachably connected with the housing.
9. The pressure measurement instrument calibration device of claim 1, wherein the housing is provided by a box with self-locking rollers at the bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220242812.7U CN216621599U (en) | 2022-01-29 | 2022-01-29 | Pressure measuring instrument calibrating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220242812.7U CN216621599U (en) | 2022-01-29 | 2022-01-29 | Pressure measuring instrument calibrating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216621599U true CN216621599U (en) | 2022-05-27 |
Family
ID=81689158
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220242812.7U Active CN216621599U (en) | 2022-01-29 | 2022-01-29 | Pressure measuring instrument calibrating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216621599U (en) |
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2022
- 2022-01-29 CN CN202220242812.7U patent/CN216621599U/en active Active
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