CN214373117U - Pressure instrument measurement accuracy detects with gas medium's accurate output device of pressure - Google Patents
Pressure instrument measurement accuracy detects with gas medium's accurate output device of pressure Download PDFInfo
- Publication number
- CN214373117U CN214373117U CN202120505098.1U CN202120505098U CN214373117U CN 214373117 U CN214373117 U CN 214373117U CN 202120505098 U CN202120505098 U CN 202120505098U CN 214373117 U CN214373117 U CN 214373117U
- Authority
- CN
- China
- Prior art keywords
- pressure
- gas
- controller
- gas medium
- meter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model discloses a pressure instrument measurement accuracy detects with gas medium's accurate output device of pressure belongs to mechatronic and pressure instrument's measurement accuracy and detects technical field. The device comprises: the device comprises a standard meter, a controller, a linear driving device, a gas pressure adjusting device, a detected meter and an operation console; the controller is connected with the standard meter through a first lead; the linear driving device is connected with the controller through a second lead; the gas pressure adjusting device is in power connection with the linear driving device and outputs gas media with corresponding pressure through the linear driving device; the operation console is in communication connection with the controller through a data line. The utility model discloses carry out accurate control to gas pressure adjusting device output gas medium according to the predetermined examination point pressure of operation control platform and go up and down to press speed, have characteristics such as simple structure, low in manufacturing cost, pressure control precision height, possess good price/performance ratio.
Description
Technical Field
The utility model belongs to the technical field of mechatronic and pressure instrument's measurement accuracy detects technique and specifically relates to indicate pressure instrument measurement accuracy to detect the accurate output device of pressure with gaseous medium.
Background
According to the regulations, instrument instruments (hereinafter collectively referred to as instruments) such as a pointer type mechanical pressure gauge, a pressure transmitter, a differential pressure transmitter, a pressure switch, a digital pressure gauge, a pressure sensor, an I/P controller/positioner and the like need to be regularly detected so as to ensure that the tested data can meet the required precision requirement; the metering detection is finished in a detection mechanism with related qualification, and a qualified instrument can obtain a metering calibration certificate of a metering verification certificate issued by the qualified detection mechanism.
The measuring range of the instrument has high or low, the required pressure is required to be generated during detection, the pressure can be generated by gas (compressed air, nitrogen and the like) or liquid (oil, water and the like) and other media, the reading of the instrument to be detected is required to be read when the pressure of the media reaches each detection point during detection, and then whether the testing precision is qualified is determined. Therefore, the pressure of the medium needs to be accurately controlled to reach the value of each detection point during the detection process, and the pause pressure holding needs to be carried out.
The conventional manual pressing method is not only inefficient, but also has a bad influence on the accuracy of detection because it is difficult to accurately control the pressure to the pressure of each detection point at one time. There are two main categories of existing automatic pressure sources: one type uses gas as a medium and needs to be provided with devices such as a pressurizing pump and the like, so that the structure is complex and the price is high. The other type is a gas-liquid driving mode, and has the defects of complex structure, high price, requirement of an external gas source or allocation of a pressurizing pump and the like.
SUMMERY OF THE UTILITY MODEL
Therefore, the technical problem to be solved by the present invention is to overcome the problems of the prior art that the automatic pressure source has a complex structure and a high price, and needs an external air source or is equipped with a pressurizing pump.
In order to solve the technical problem, the utility model provides a pressure instrument measurement accuracy detects with gaseous medium's accurate output device of pressure, include: the device comprises a standard meter, a controller, a linear driving device, a gas pressure adjusting device, a detected meter and an operation console; the controller is connected with the standard meter through a first lead and acquires the real-time pressure of the standard meter through the controller; the linear driving device is connected with the controller through a second lead; the gas pressure adjusting device is in power connection with the linear driving device and outputs gas media with corresponding pressure through the linear driving device; the detected meter and the standard meter are both connected to the output end of the gas pressure regulating device; the operation control console is used for setting the number of the verification points and the pressure of the verification points, and is in communication connection with the controller through a data line.
In an embodiment of the present invention, the linear driving device includes: the output end of the motor is connected with the linear motion mechanism, the linear motion mechanism is used for converting the rotary motion of the motor into linear motion, and the power of the linear reciprocating motion is output outwards by the telescopic shaft.
In an embodiment of the present invention, the linear motion mechanism is a lead screw, one end of the lead screw is connected to the motor, and the other end of the lead screw is connected to the telescopic shaft.
In an embodiment of the present invention, the gas pressure adjusting device includes: the piston rod is connected with the telescopic shaft, and the piston head can reciprocate in the cylinder through the reciprocating motion of the telescopic shaft.
In an embodiment of the present invention, the piston rod is connected to the telescopic shaft through a shaft connecting sleeve.
In an embodiment of the present invention, the type of the motor includes: servo motor, step motor.
The utility model discloses an embodiment, the gas vent of cylinder is connected with the trachea, detected table, standard table and connect on the trachea just detected table, standard table pressure keep unanimous.
In an embodiment of the present invention, the standard table and the detected table all include: a pressure transmitter.
In an embodiment of the present invention, the operation console includes: a computer, a human-computer interface, or a manual control knob.
In an embodiment of the present invention, the controller includes: PLC, singlechip.
Compared with the prior art, the technical scheme of the utility model have following advantage:
the utility model discloses carry out accurate control to gas pressure adjusting device output gas medium according to the predetermined examination point pressure of operating console and step-up and step-down speed, this accurate control's precision can reach the micron order, can satisfy the high accuracy demand that low pressure to high-pressure instrument detected simultaneously, has characteristics such as simple structure, low in manufacturing cost, pressure control precision height, possesses good price/performance ratio.
Drawings
In order to make the content of the invention more clearly understood, the invention will now be described in further detail with reference to specific embodiments thereof, in conjunction with the accompanying drawings, in which
Fig. 1 is a structural diagram of a pressure precision output device of a gas medium for measuring precision detection of a pressure instrument.
The specification reference numbers indicate: 1. a cylinder; 2. a piston head; 3. a piston rod; 4. a shaft connecting sleeve; 5. a telescopic shaft; 6. a linear motion mechanism; 7. a motor; 8. a second conductive line; 9. a controller; 10. a data line; 11. operating a console; 12. a first conductive line; 13. a standard table; 14. a detected table; 15. the trachea.
Detailed Description
The present invention is further described with reference to the following drawings and specific embodiments so that those skilled in the art can better understand the present invention and can implement the present invention, but the embodiments are not to be construed as limiting the present invention. It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged under appropriate circumstances for purposes of describing the embodiments of the invention herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Examples
Referring to fig. 1, the utility model discloses a pressure instrument measurement accuracy detects with gas medium's accurate output device of pressure includes: a standard meter 13, a controller 9, a linear driving device, a gas pressure adjusting device, a detected meter 14 and an operation console 11; the controller 9 is connected with the standard meter 13 through a first lead 12, and the real-time pressure of the standard meter 13 is obtained through the controller 9; the linear driving device is connected with the controller 9 through a second lead 8; the gas pressure adjusting device is in power connection with the linear driving device and outputs gas media with corresponding pressure through the linear driving device; the detected meter 14 and the standard meter 13 are both connected to the output end of the gas pressure regulating device; the operation console 11 is used for setting the number of the verification points and the pressure of the verification points, and the operation console 11 is in communication connection with the controller 9 through a data line 10. According to the structure, the gas medium output by the gas pressure regulating device can be accurately controlled through the pressure of the calibration point and the pressure increasing and decreasing speed preset by the operation console 11.
Specifically, the linear driving device includes: the motor 7, the linear motion mechanism 6, the telescopic shaft 5, the output of motor 7 is connected with the linear motion mechanism 6, the linear motion mechanism 6 is used for converting the rotary motion of motor 7 into linear motion, is exported the power of straight reciprocating motion outward by telescopic shaft 5. The linear motion mechanism 6 may be the following mechanism: and one end of the screw rod is connected with the motor 7, and the other end of the screw rod is connected with the telescopic shaft 5. Through the structure, the rotary motion of the motor 7 can be stably converted into linear motion, so that the displacement of the telescopic shaft 5 is accurately controlled, and the precision of the telescopic shaft is guaranteed to reach the micron level.
Specifically, the gas pressure adjusting device includes: the piston rod 3 is connected with a telescopic shaft 5 through a shaft connecting sleeve 4, and the piston head 2 reciprocates in the cylinder 1 through the reciprocating motion of the telescopic shaft 5. With the above configuration, the gas in the cylinder 1 is compressed or expanded, that is, the output medium pressure is increased or decreased.
Specifically, the types of the motor 7 include: servo motor, step motor.
Specifically, an air pipe 15 is connected to an exhaust port of the cylinder 1, the detected gauge 14 and the standard gauge 13 are connected to the air pipe 15, and the pressures of the detected gauge 14 and the standard gauge 13 are kept consistent. The standard meter 13 transmits the pressure signal to the controller 9, which can not only accurately measure the output pressure of the gas medium, but also provide a control feedback signal for controlling the voltage increase and decrease.
Specifically, the standard table 13 and the detected table 14 each include: a pressure transmitter.
Specifically, the controller 9 includes: PLC, singlechip.
Specifically, the operation console 11 includes: a computer, human-computer interface, or manual control knob; if manual operation is selected to control the processes of rising, stopping, falling and the like of the pressure of the gas medium, no PLC or single chip microcomputer is needed in the controller 9, and the operation console 11 only needs a manual control knob (or other similar switches) to control the rotation rate (including positive and negative rotation and stopping) of the motor 7.
It should be noted that the pressure degree of the meter 14 to be detected can be realized by an automatic detection method, and specifically, the pressure degree can be realized by an "automatic detection device of a mechanical pointer type meter" disclosed in application No. 202010753060.6, which is not described herein again.
The working principle is as follows: the number of the detection points and the pressure of each detection point are input into a computer or a human-computer interface of the operation console 11 in advance, and the operation console 11 sends a 'start' instruction; after the operation console 11 starts detection, the controller 9 receives the instruction and uploads the pressure of the standard meter 13 to a computer or a human-computer interface of the operation console 11; the controller 9 controls the rate of rotation (including stopping) of the motor 7 based on the pressure difference between the current gaseous medium output pressure and the certification point, including: when the numerical value of the pressure difference changes from large to small, the rotation speed of the motor 7 is changed from fast to slow, and when the output pressure is equal to the pressure of the verification point, the motor 7 stops rotating; the above control process makes the motor 7 rotate faster when the pressure difference is larger, and the motor 7 rotate slower when the pressure is closer to the pressure of the verification point, and the motor 7 stops rotating when the current output pressure is equal to the pressure of the verification point, so that the pressure of the gas medium can be controlled to accurately reach the pressure of each verification point, and the required pause (pressure maintaining) is realized at the pressure of each verification point. The inspection flow for testing the accuracy of the table 14 to be tested includes: the controller 9 controls the motor 7 to enable the output pressure to rise, pause, fall and pause; the method specifically comprises the following steps: the controller 9 rotates according to a program input in advance, and then controls the gas pressure to rise, pause, fall and pause according to the specification of a pressure gauge or a pressure transmitter 'inspection procedure' so as to finish the inspection process of the test precision of the pressure gauge to be inspected; when the detection flow of the test accuracy of the detected meter 14 is completed, the computer or the human-computer interface of the operation console 11 sends an 'end' instruction to the controller 9, and the controller 9 controls the motor 7 to stop rotating. The above process can also control the rotation speed of the motor 7 through manual operation of the button to perform the test process of the test accuracy of the table 14 to be tested.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious changes and modifications can be made without departing from the scope of the invention.
Claims (10)
1. Pressure instrument measurement accuracy detects with gas medium's accurate output device of pressure, its characterized in that includes:
a standard table;
the controller is connected with the standard meter through a first lead and acquires the real-time pressure of the standard meter through the controller;
the linear driving device is connected with the controller through a second lead;
the gas pressure adjusting device is in power connection with the linear driving device and outputs gas media with corresponding pressure through the linear driving device;
the detected meter and the standard meter are both connected to the output end of the gas pressure regulating device;
the operation control console is used for setting the number of the verification points and the pressure of the verification points, and the operation control console is in communication connection with the controller through a data line.
2. The pressure-precision output device for a gaseous medium for pressure-meter measurement precision detection according to claim 1, wherein the linear driving device comprises: the output end of the motor is connected with the linear motion mechanism, the linear motion mechanism is used for converting the rotary motion of the motor into linear motion, and the power of the linear reciprocating motion is output outwards by the telescopic shaft.
3. The device for accurately outputting the pressure of the gas medium for measuring the accuracy of pressure instrument according to claim 2, wherein the linear motion mechanism is a lead screw, one end of the lead screw is connected to the motor, and the other end of the lead screw is connected to the telescopic shaft.
4. The gas medium pressure precision output device for pressure instrument measurement precision detection according to claim 2, characterized in that the gas pressure adjusting device comprises: the piston rod is connected with the telescopic shaft, and the piston head can reciprocate in the cylinder through the reciprocating motion of the telescopic shaft.
5. The device for accurately outputting the pressure of the gas medium for measuring accuracy detection of a pressure instrument as claimed in claim 4, wherein the piston rod is connected to the telescopic shaft through a shaft connecting sleeve.
6. The pressure instrument measurement accuracy detection gas medium pressure accuracy output device according to claim 2, wherein the type of the motor includes: servo motor, step motor.
7. The gas medium pressure precision output device for pressure instrument measurement precision detection according to claim 4, wherein an air pipe is connected to an exhaust port of the cylinder, and the detected gauge and the standard gauge are connected to the air pipe and the pressures of the detected gauge and the standard gauge are kept consistent.
8. The apparatus for accurately outputting the pressure of the gas medium for measuring accuracy detection of a pressure meter according to claim 1, wherein the standard meter and the meter to be detected each comprise: a pressure transmitter.
9. The apparatus for accurately outputting the pressure of the gas medium for measuring accuracy detection of a pressure instrument according to claim 1, wherein the operation console comprises: a computer, a human-computer interface, or a manual control knob.
10. The pressure instrument measurement accuracy detection gas medium pressure accuracy output device according to claim 1, wherein the controller includes: PLC, singlechip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120505098.1U CN214373117U (en) | 2021-03-09 | 2021-03-09 | Pressure instrument measurement accuracy detects with gas medium's accurate output device of pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120505098.1U CN214373117U (en) | 2021-03-09 | 2021-03-09 | Pressure instrument measurement accuracy detects with gas medium's accurate output device of pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214373117U true CN214373117U (en) | 2021-10-08 |
Family
ID=77971626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120505098.1U Active CN214373117U (en) | 2021-03-09 | 2021-03-09 | Pressure instrument measurement accuracy detects with gas medium's accurate output device of pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214373117U (en) |
-
2021
- 2021-03-09 CN CN202120505098.1U patent/CN214373117U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101424596B (en) | Calibration stand and calibration method for SF6 gas density and pressure monitoring device | |
| CN201476938U (en) | Full-automatic pressure checking equipment of piston type pressure gauge | |
| CN201993202U (en) | Calibrating device for pressure sensor or transmitter | |
| CN103048087A (en) | Pressure sensor debugging system and debugging method thereof | |
| CN106908240B (en) | Online testing device and testing method for thermal error of machine tool spindle | |
| CN201247254Y (en) | Automatic detection device for wind sensor of automatic meteorological station | |
| WO2022188308A1 (en) | Pressure control system and method for liquid medium for measurement accuracy testing of pressure meter | |
| CN107478382A (en) | A kind of manometer automatic detection device and its detection method | |
| WO2019011353A1 (en) | Pressure calibration apparatus and pressure instrument calibration information processing method | |
| CN100443864C (en) | Vehicle air throttle air inflow test system and testing method | |
| CN214200488U (en) | Pressure precision output device of liquid medium for pressure instrument measurement precision detection | |
| CN214373117U (en) | Pressure instrument measurement accuracy detects with gas medium's accurate output device of pressure | |
| CN201297986Y (en) | Calibration stand of SF* gas density-pressure monitoring device | |
| CN113029433B (en) | Pressure control system and method for gas medium for pressure instrument measurement accuracy detection | |
| CN209102368U (en) | A kind of Retarder control valve detection system | |
| CN205450209U (en) | Detect device of pressure switch switching value | |
| CN206618636U (en) | Sponge stress test device | |
| CN104483572A (en) | Method, device and system for testing precision of valve positioner | |
| CN1325891C (en) | Full-automatic accurate pressure testing control instrument | |
| CN112924089B (en) | Intelligent automatic test system, method and device suitable for pressure gauge | |
| CN214533831U (en) | Self-control hydraulic pressure source system | |
| CN111473913A (en) | Automatic calibrator for pressure instrument | |
| CN204532792U (en) | A kind of test installation of pump system | |
| CN114018475A (en) | Full-automatic pressure gauge calibrating device | |
| CN112555235A (en) | Self-control hydraulic pressure source system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |