CN115855368A - Remote metering pressure gauge calibration system and calibration method - Google Patents
Remote metering pressure gauge calibration system and calibration method Download PDFInfo
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- CN115855368A CN115855368A CN202211556216.7A CN202211556216A CN115855368A CN 115855368 A CN115855368 A CN 115855368A CN 202211556216 A CN202211556216 A CN 202211556216A CN 115855368 A CN115855368 A CN 115855368A
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Abstract
The invention relates to the improvement of the pressure gauge verification technology, in particular to a verification system and a verification method for a remote metering pressure gauge, which realize that a sending and checking unit does not need to send the pressure gauge to a verification mechanism any more under the condition of meeting the verification regulation specified by the state, and a verification worker can carry out remote verification operation on the pressure gauge on a computer in the verification mechanism and generate a verification certificate, thereby reducing the workload of verification of the pressure gauge, ensuring the safe and reliable verification of the pressure gauge even when the logistics is limited and the ineffectual factors occur, and providing a new idea and mode for the verification mode of the metering industry; the pressure gauge calibration system comprises a pressure gauge assembly operation site and a pressure gauge calibration site, wherein the pressure gauge assembly operation site is positioned at other places except a calibration mechanism, and the pressure gauge calibration site is positioned at the calibration mechanism; the pressure gauge assembly operation site comprises a pressure gauge verification operation table, an environment camera and a verification operation camera; and a computer with a built-in pressure gauge verification operating system is arranged in the pressure gauge verification place.
Description
Technical Field
The invention relates to improvement of a pressure gauge calibration technology, in particular to a remote metering pressure gauge calibration system and a calibration method.
Background
The pressure gauge is the most commonly used instrument in various instruments, and the measuring range and the accuracy of pressure measurement need to be judged after delivery. For the verification of instruments, china has special verification standards, such as national measurement regulation rules of 'general pressure gauge, pressure vacuum gauge and vacuum gauge of elastic element type' of JJJG 52-2013 issued by the State quality supervision, inspection and quarantine Bureau, and in the measurement regulation rules, zero point errors, indication errors, return errors and slight displacement need to be verified definitely. Communicating the inner cavity of the pressure gauge with the atmosphere under the specified environmental condition, placing the pressure gauge according to the normal working position, observing by eyes, and performing zero point error detection once before and after indicating value error detection; the indication value verification of the pressure gauge is a method for comparing the indication value of a standard device with the indication value of the pressure gauge to be checked; the return error is detected when the indicating value error is detected, and the absolute value of the difference between the indicating values of the back-up pressure detecting meter shell of the pressure boosting and pressure reducing tapping meter shell at the same detecting point is the return error of the pressure meter.
Aiming at the detection requirements of the pressure gauge, the verification workload of the pressure gauge is very large, zero point error detection, indication error detection, return error detection and slight displacement detection are needed, the quantity of pressure gauges to be detected is huge, the quantity of pressure gauges to be detected is increased day by day in recent years, but the quantity of qualified verification mechanisms and verification personnel is still limited, and the huge verification requirements of the pressure gauge at present can not be met.
Aiming at the problem, the improvement direction of the verification work of the pressure gauge in the prior art is mainly to realize the automatic design of verification action, and the verification efficiency of the pressure gauge is improved by combining the image recognition technology with the operations of automatic pressure gauge clamping, automatic pressure supply, automatic pressure regulation and the like, so that verification personnel are helped to reduce the verification time of a single pressure gauge, the manual operation steps of the verification personnel are simplified, and the verification quantity of a verification mechanism is improved.
Disclosure of Invention
Aiming at the problems mentioned in the background technology, the invention provides a remote metering pressure gauge verification system and a verification method, which realize that a delivery unit does not need to send a pressure gauge to a verification mechanism any more under the condition of meeting the verification regulation specified by the state, and a verification worker can carry out remote verification operation on the pressure gauge on a computer in the verification mechanism to generate a verification certificate and operate legal compliance, thereby greatly reducing the workload of pressure gauge verification, ensuring the safe and reliable verification of the pressure gauge even when the logistics is limited and the force-ineffectiveness factor occurs, and providing a new idea and mode for the verification mode of the metering industry.
The technical purpose of the invention is realized by the following technical scheme: a remote metering pressure gauge calibrating system comprises a pressure gauge assembling operation site and a pressure gauge calibrating site, wherein the pressure gauge assembling operation site can be positioned at other places except a calibrating mechanism, and the pressure gauge calibrating site is positioned in the calibrating mechanism;
the pressure gauge assembly operation site comprises a pressure gauge verification operation table, an environment camera and a verification operation camera;
a computer with a built-in pressure gauge verification operating system is arranged in the pressure gauge verification place;
the pressure gauge verification operation table, the environment camera and the verification operation camera are all in communication connection with a computer with a built-in pressure gauge verification operation system.
As an improvement, the pressure gauge verification operation platform comprises a table top, a confirmation switch, a code scanning device, a gauge clamping mechanism, an image recognition device, a gauge knocking mechanism, a controller and a pressure control system; the table board is provided with a plurality of verification stations, each verification station is provided with a meter clamping mechanism, a meter knocking mechanism is arranged beside each meter clamping mechanism, an image recognition device is further arranged beside each meter clamping mechanism, the image recognition device faces the meter clamping mechanism, the confirmation switch, the code scanning device, the meter clamping mechanism, the image recognition device, the meter knocking mechanism and the pressure control system are all connected with the controller, and the controller is internally provided with a communication module which can be in communication connection with a computer.
As preferred, the clamp table mechanism includes overcoat, jack catch, sealing washer movable sleeve, unsteady inner tube, the cover that draws tightly, sealed bearing cover and base, unsteady inner tube is established in taut cover and with taut cover sliding fit, the top of unsteady inner tube is equipped with the sealing washer movable sleeve, taut cover upper portion is equipped with the jack catch, it is equipped with sealed bearing cover to draw tight cover lower part, draw tight cover can with jack catch normal running fit, sliding fit between draw tight cover and the sealed bearing cover, jack catch and sealed bearing cover are established in the overcoat, the base is installed to the overcoat bottom, the base is equipped with examination gas circuit 881 and presss from both sides tight release drive gas circuit respectively, be equipped with the conducting hole in unsteady inner tube 84, examination gas circuit and unsteady inner tube's conducting hole intercommunication, be equipped with inner chamber one between unsteady inner tube and the taut cover, be equipped with through-hole one on the unsteady inner tube, through-hole one communicates with inner chamber one, taut cover still is equipped with through-hole two, be equipped with inner chamber two on the taut cover, the tight cover bottom is equipped with the sealing ring, the inner chamber separates cavity into upper chamber and lower cavity, through-hole one and through-hole two inner chamber drive gas circuit intercommunication, tight cover and two tight drive gas circuit intercommunication of tight inner chamber; still be equipped with inner chamber three between unsteady inner tube and the base, be equipped with sealed gas circuit on the base, sealed gas circuit and inner chamber three intercommunication.
As an improvement, the device further comprises an image recognition adjusting mechanism which is a cross sliding table with a vertical sliding function and a front-back sliding function.
As an improvement, the table clamping device also comprises a table clamping quick-release mechanism, and the table clamping mechanism can be detachably connected with the table top through the table clamping quick-release mechanism; press from both sides table quick detach mechanism and include that joint shell, joint base and air inlet are a plurality of, joint shell and joint base are connected, and air inlet one is established on joint base and the direction is vertical downwards, still includes quick change casing, quick change base and nut, be equipped with vertical ascending air inlet two on the quick change base, air inlet two is located and is equipped with a plurality of sealed pads, air inlet two is through sealed pad and air inlet one intercommunication, the face of quick change base and air inlet two contacts is the level, detachable connections between quick change base and the quick change casing is equipped with the cavity that is used for holding quick joint in the quick change casing, connects shell and nut connection, the spiro union between the inner wall of nut and quick change casing.
Preferably, the pressure gauge verification operation system arranged in the computer comprises an environment video display interface, a verification operation video display interface, a pressure gauge dial video display interface, a pressure gauge verification information table and a verification operation button;
the environment video display interface correspondingly displays video stream data of the environment camera;
the verification operation video display interface correspondingly displays video stream data of the verification operation camera;
the video display interface of the pressure gauge dial corresponds to video stream data of the image recognition device;
the verification information table of the pressure gauge comprises a plurality of information frames, and the information frames specifically comprise an order number, a record number, an instrument identifier, an instrument name, a checking unit, a model/specification, a factory number, a production factory, a factory date, a measurement range, a maximum range, a quantity value unit, a precision grade, a division value, a dial diameter, whether a pin is stopped with a zero position or not, appearance, stability, a discriminator, a verifier, a verification person, a verification result, a maximum indication value error, a maximum return error, a maximum tapping displacement, a zero position error, a verification conclusion, a standard pressure value and an environment temperature.
The technical purpose of the invention is realized by the following technical scheme: a remote metering pressure gauge calibration method comprises the following steps:
step 1, a pressure gauge equipment operation site is provided with operators, and a pressure gauge verification site is provided with pressure gauge verification personnel; a pressure gauge calibrating personnel logs in the pressure gauge calibrating operation system through a computer, and checks an environment video display interface, a calibrating operation video display interface, a pressure dial video display interface and a pressure gauge calibrating information table in the pressure gauge calibrating operation system;
if the environment video display interface and the verification operation video display interface have stable video streams; the video display interface of the dial plate of the pressure gauge is not provided with the pressure gauge; if the numerical value in the information frame in the pressure gauge verification information table is empty, the remote metering pressure gauge verification system is determined to enter a state to be detected;
step 4, the calibrating personnel judge according to the corresponding video data of the environment video display interface, the calibrating operation video display interface and the pressure gauge dial video information interface, if the calibrating conditions are met, a calibrating operation button in the pressure gauge calibrating operation system is clicked, and the computer sends a trigger signal of the calibrating operation button and a first pressurization value of the pressure gauge to be calibrated to a controller of the pressure gauge calibrating operation table;
and 7, taking down the pressure gauge after verification from the pressure gauge verification operation table by an operator, replacing the pressure gauge with a new pressure gauge to be detected, and repeating the steps 1-6.
In conclusion, the invention has the following beneficial effects: the invention is a breakthrough to the traditional pressure gauge verification method, because of the influence of the national specified verification regulation of the pressure gauge, the verification method of the pressure gauge in the national range is a conventional method for verifying the pressure gauge in the measurement yard, but as the number of the pressure gauges to be detected increases greatly, the number of the measurement yard, the number of the measurement equipment and the number of the measurement personnel all become the bottleneck of the verification efficiency of the pressure gauge.
Drawings
FIG. 1 is a schematic block diagram of the present invention;
FIG. 2 is a schematic diagram of the method steps of the present invention;
FIG. 3 is a schematic illustration of a certification interface for a certifier according to the present invention;
FIG. 4 is a schematic structural diagram of a pressure gauge calibration console;
FIG. 5 is a block diagram of the mechanism connection of the pressure gauge calibration console;
FIG. 6 is a schematic view of the quick connector;
fig. 7 is a schematic structural view of the quick-change device;
FIG. 8 is a cross-sectional view of the quick-change device;
fig. 9 is a schematic structural view of a nut of the quick-change device.
Description of reference numerals: 1. calibrating the operating table by the pressure gauge; 2. an environmental camera; 3. calibrating the operation camera; 4. a computer; 5. a table top; 6. a confirmation switch; 7. a code scanning device; 8. a meter clamping mechanism; 81. a jacket; 82. a claw; 821. a protrusion; 83. a movable sleeve of a sealing ring; 84. a floating inner tube; 841. a first through hole; 842. conducting holes; 85. tightening the sleeve; 851. a cavity; 852. a second through hole; 853. a seal ring; 86. sealing the pressure bearing sleeve; 87. a return spring; 88. a base; 881. detecting a gas circuit; 882. a clamping and loosening driving air path; 883. sealing the gas circuit; 89. a first inner cavity; 810. a second inner cavity; 811. a third inner cavity; 812. beveling; 9. an image recognition device; 10. a table knocking mechanism; 11. a controller; 12. a pressure control system; 13. a clamp meter quick-release mechanism; 131. a connector housing; 132. a joint base; 133. a first air inlet; 134. quickly replacing the shell; 135. quickly replacing the base; 136. a nut; 137. a second air inlet; 138. a gasket; 139. a cavity; 1310. positioning pins; 1311. a pin hole; 1312. a card slot; 1313. stopping the pin; 1314. a handle mechanism; 1315. a connecting member; 14. and an image recognition adjusting mechanism.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention discloses a remote metering pressure gauge verification system, which comprises a pressure gauge assembly operation site and a pressure gauge verification site, wherein the pressure gauge assembly operation site can be positioned at other places except a verification mechanism, and the pressure gauge verification site is positioned in the verification mechanism;
the pressure gauge assembly operation site comprises a pressure gauge verification operation table 1, an environment camera 2 and a verification operation camera 3;
a computer 4 with a built-in pressure gauge verification operating system is arranged in the pressure gauge verification place;
the pressure gauge verification operation platform 1, the environment camera 2 and the verification operation camera 3 are all in communication connection with a computer 4 with a built-in pressure gauge verification operation system.
The pressure gauge verification operation platform comprises a table top 5, a confirmation switch 6, a code scanning device 7, a gauge clamping mechanism 8, an image recognition device 9, a table knocking mechanism 10, a controller 11 and a pressure control system 12; the table top 5 is provided with a plurality of verification stations, each verification station is provided with a meter clamping mechanism 8, a meter knocking mechanism 10 is arranged beside each meter clamping mechanism 8, an image recognition device 9 is further arranged beside each meter clamping mechanism 8, the image recognition device 9 faces the meter clamping mechanism 8, the confirmation switch 6, the code scanning device 7, the meter clamping mechanism 8, the image recognition device 9, the meter knocking mechanism 10 and the pressure control system 12 are all connected with a controller 11, and a communication module is arranged in the controller 11 and can be in communication connection with the computer 4.
The meter clamping mechanism 8 comprises an outer sleeve 81, a jaw 82, a sealing ring movable sleeve 83, a floating inner tube 84, a tensioning sleeve 85, a sealing bearing sleeve 86 and a base 88, the floating inner tube 84 is arranged in the tensioning sleeve 85 and is in sliding fit with the tensioning sleeve 85, the top of the floating inner tube 84 is provided with the sealing ring movable sleeve 83, the upper part of the tensioning sleeve 85 is provided with the jaw 82, the lower part of the tensioning sleeve 85 is provided with the sealing bearing sleeve 86, the tensioning sleeve 85 can be in rotating fit with the jaw 82, the tensioning sleeve 85 is in sliding fit with the sealing bearing sleeve 86, the jaw 82 and the sealing bearing sleeve 86 are arranged in the outer sleeve 81, the bottom of the outer sleeve 81 is provided with the base 88, the base 88 is respectively provided with a verification air passage 881 and a clamping loosening driving air passage 882, the through 842 is arranged in the floating inner tube 84, the verification air passage 842 is communicated with the through 842 of the floating inner tube 84, the floating inner tube 84 is provided with the first inner cavity 89, the floating inner tube 84 is provided with a first through hole 852, the sealing ring 852 which is communicated with the first inner cavity 810 and the second cavity 810, the sealing ring 853 is provided with the second cavity 810, and the lower cavity 882 are communicated with the sealing ring 853; still be equipped with three inner chambers 811 between unsteady inner tube 84 and the base 88, be equipped with sealed gas circuit 883 on the base 88, sealed gas circuit 883 communicates with three inner chambers 811.
The device further comprises an image recognition adjusting mechanism 14, wherein the image recognition adjusting mechanism 14 is a cross sliding table with a vertical sliding function and a front-back sliding function.
The table clamping mechanism 8 can be detachably connected with the table top 5 through the table clamping quick-release mechanism 13; the clamp meter quick-release mechanism 13 comprises a connector shell 131, a connector base 132 and a plurality of air inlets 133, the connector shell 131 is connected with the connector base 132, the air inlets 133 are arranged on the connector base 132, the direction of the air inlets is vertical downward, the clamp meter quick-release mechanism further comprises a quick-change shell 134, a quick-change base 135 and a screw cap 136, a vertical upward air inlet two 137 is arranged on the quick-change base 135, a plurality of sealing gaskets 138 are arranged at the air inlet two 137, the air inlet two 137 is communicated with the air inlets 133 through the sealing gaskets 138, the contact surface between the quick-change base 135 and the quick-change shell 134 is horizontal, the quick-change base 135 is detachably connected with the quick-change shell 134, a cavity 139 used for containing the quick connector is arranged in the quick-change shell 134, the connector shell 131 is connected with the screw cap 136, and the screw cap 136 is screwed with the inner wall of the quick-change shell 134.
The pressure gauge verification operation system arranged in the computer 4 comprises an environment video display interface, a verification operation video display interface, a pressure gauge dial video display interface, a pressure gauge verification information table and a verification operation button;
the environment video display interface correspondingly displays video stream data of the environment camera 2;
the verification operation video display interface correspondingly displays video stream data of the verification operation camera 3;
the video display interface of the pressure gauge dial correspondingly displays the video stream data of the image recognition device 9;
the verification information table of the pressure gauge comprises a plurality of information frames, and the information frames specifically comprise an order number, a record number, an instrument identifier, an instrument name, a checking unit, a model/specification, a factory number, a production factory, a factory date, a measurement range, a maximum range, a quantity value unit, a precision grade, a division value, a dial diameter, whether a pin is stopped with a zero position or not, appearance, stability, a discriminator, a verifier, a verification person, a verification result, a maximum indication value error, a maximum return error, a maximum tapping displacement, a zero position error, a verification conclusion, a standard pressure value and an environment temperature.
The invention discloses a remote metering pressure gauge calibration method, which comprises the following steps:
step 1, a pressure gauge equipment operation site is provided with operators, and a pressure gauge verification site is provided with pressure gauge verification personnel; a pressure gauge calibrating personnel logs in the pressure gauge calibrating operation system through the computer 4, and the pressure gauge calibrating personnel inspects an environment video display interface, a calibrating operation video display interface, a pressure gauge plate video display interface and a pressure gauge calibrating information table in the pressure gauge calibrating operation system;
if the environment video display interface and the verification operation video display interface have stable video streams; the video display interface of the dial plate of the pressure gauge is not provided with the pressure gauge; if the numerical value in the information frame in the pressure gauge verification information table is empty, the remote metering pressure gauge verification system is determined to enter a state to be detected;
step 4, the calibrating personnel judge according to the corresponding video data of the environment video display interface, the calibrating operation video display interface and the pressure gauge dial video information interface, if the calibrating conditions are met, a calibrating operation button in the pressure gauge calibrating operation system is clicked, and the computer 4 sends a trigger signal of the calibrating operation button and a first pressurization value of the pressure gauge to be calibrated to the controller 11 of the pressure gauge calibrating operation table;
and 7, taking down the pressure gauge after verification from the pressure gauge verification operation table by an operator, replacing the pressure gauge with a new pressure gauge to be detected, and repeating the steps 1-6.
The tensioning device further comprises a return spring 87, wherein the return spring 87 is arranged in the second inner cavity 810, one end of the return spring is connected with the tensioning sleeve 85, and the other end of the return spring is connected with the base 88.
The joint shell 131 is provided with a positioning pin 1310, the nut 136 is provided with a pin hole 1311 for the positioning pin 1310 to pass through, the nut 136 is further provided with a clamping groove 1312 for accommodating the positioning pin 1310, the pin hole 1311 is communicated with the clamping groove 1312, and the clamping groove 1312 is horizontal.
A stop pin 1313 for limiting the stroke of the positioning pin 1310 is further provided in the latch groove 1312.
The screw specification of the screw cap 136 is Tr60 × 4; the joint shell 131 is further provided with a handle mechanism 1314, and the handle mechanism 1314 is connected with the top of the joint shell 131.
The quick-change housing 134 is further provided with a connector 1315 for replacement and removal from the certification platform.
The bottom of the joint base 132 is further provided with a flat tenon structure for limiting the rotation of the joint base.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. A remote metering pressure gauge calibrating system is characterized by comprising a pressure gauge assembling operation site and a pressure gauge calibrating site, wherein the pressure gauge assembling operation site can be positioned at other places except a calibrating mechanism, and the pressure gauge calibrating site is positioned in the calibrating mechanism;
the pressure gauge assembly operation site comprises a pressure gauge verification operation table (1), an environment camera (2) and a verification operation camera (3);
a computer (4) with a built-in pressure gauge verification operating system is arranged in the pressure gauge verification place;
the pressure gauge verification operation table (1), the environment camera (2) and the verification operation camera (3) are in communication connection with a computer (4) with a built-in pressure gauge verification operation system.
2. The remote metrological pressure gauge verification system according to claim 1, wherein the pressure gauge verification operation table comprises a table top (5), a confirmation switch (6), a code scanning device (7), a gauge clamping mechanism (8), an image recognition device (9), a table knocking mechanism (10), a controller (11) and a pressure control system (12); the table top (5) is provided with a plurality of verification stations, each verification station is provided with a meter clamping mechanism (8), a meter knocking mechanism (10) is arranged beside each meter clamping mechanism (8), an image recognition device (9) is arranged beside each meter clamping mechanism (8), the image recognition device (9) faces the meter clamping mechanism (8), the confirmation switch (6), the code scanning device (7), the meter clamping mechanism (8), the image recognition device (9), the meter knocking mechanism (10) and the pressure control system (12) are all connected with the controller (11), and the controller (11) is internally provided with a communication module which can be in communication connection with the computer (4).
3. The verification system for the remote metering pressure gauge according to claim 1, wherein the gauge clamping mechanism (8) comprises an outer sleeve (81), a jaw (82), a seal ring movable sleeve (83), a floating inner tube (84), a tensioning sleeve (85), a seal pressure sleeve (86) and a base (88), the floating inner tube (84) is arranged in the tensioning sleeve (85) and is in sliding fit with the tensioning sleeve (85), the top of the floating inner tube (84) is provided with the seal ring movable sleeve (83), the upper part of the tensioning sleeve (85) is provided with the jaw (82), the lower part of the tensioning sleeve (85) is provided with the seal pressure sleeve (86), the tensioning sleeve (85) can be in rotating fit with the jaw (82), the sliding fit between the tensioning sleeve (85) and the seal pressure sleeve (86), the jaw (82) and the seal pressure sleeve (86) are arranged in the outer sleeve (81), the bottom of the outer sleeve (81) is provided with the base (88), the base (88) is respectively provided with a verification air passage 881 and a clamping driving air passage 882, the floating inner tube (84) is provided with a floating air passage 842, and a floating inner tube (89) and a floating inner tube (84) through hole 881) is provided with a floating through hole (89), the through hole I (841) is communicated with the inner cavity I (89), a through hole II (852) is further formed in the tensioning sleeve (85), an inner cavity II (810) is arranged between the base (88) and the tensioning sleeve (85), a sealing ring (853) is arranged at the bottom end of the tensioning sleeve (85), the inner cavity II (810) is divided into an upper cavity and a lower cavity by the sealing ring (853), the through hole I (841) is communicated with the upper cavity of the inner cavity II (810) through the inner cavity I (89) and the through hole II (852), and the clamping and loosening driving air passage (882) is communicated with the lower cavity of the inner cavity II (810); still be equipped with inner chamber three (811) between unsteady inner tube (84) and base (88), be equipped with sealed gas circuit (883) on base (88), sealed gas circuit (883) and inner chamber three (811) intercommunication.
4. The remote verification system for the metering pressure gauge according to claim 2, further comprising an image recognition adjusting mechanism (14), wherein the image recognition adjusting mechanism (14) is a cross sliding table with a vertical direction sliding function and a front-back direction sliding function.
5. The system for calibrating the remote metering pressure gauge according to claim 2, further comprising a clamp gauge quick-release mechanism (13), wherein the clamp gauge mechanism (8) can be detachably connected with the table top (5) through the clamp gauge quick-release mechanism (13); press from both sides table quick detach mechanism (13) including connecting shell (131), joint base (132) and air inlet (133) a plurality of, connect shell (131) and joint base (132) and be connected, air inlet (133) are established on joint base (132) and the direction is vertical downwards, still include quick change casing (134), quick change base (135) and nut (136), be equipped with vertical ascending air inlet two (137) on quick change base (135), air inlet two (137) department is equipped with a plurality of sealed pads (138), air inlet two (137) are through sealed pad (138) and air inlet (133) intercommunication, the face that quick change base (135) and air inlet two (137) contact is the level, be connected between quick change base (135) and quick change casing (134), be equipped with in quick change casing (134) and be used for holding quick-operation joint's cavity (139), connect shell (131) and nut (136) and be connected, the spiro union between the inner wall of nut (136) and quick change casing (134).
6. The remote metrological pressure gauge verification system according to claim 2, the pressure gauge verification operation system built in the computer (4) comprises an environment video display interface, a verification operation video display interface, a pressure gauge dial video display interface, a pressure gauge verification information table and verification operation buttons;
the environment video display interface correspondingly displays video stream data of the environment camera (2);
the verification operation video display interface correspondingly displays video stream data of the verification operation camera (3);
the video display interface of the pressure gauge dial corresponds to the video stream data of the image recognition device (9);
the verification information table of the pressure gauge comprises a plurality of information frames, and the information frames specifically comprise an order number, a record number, an instrument identifier, an instrument name, a checking unit, a model/specification, a factory number, a production factory, a factory date, a measurement range, a maximum range, a quantity value unit, a precision grade, a division value, a dial diameter, whether a pin is stopped with a zero position or not, appearance, stability, a discriminator, a verifier, a verification person, a verification result, a maximum indication value error, a maximum return error, a maximum tapping displacement, a zero position error, a verification conclusion, a standard pressure value and an environment temperature.
7. A remote metering pressure gauge calibration method is characterized by comprising the following steps:
step 1, a pressure gauge equipment operation site is provided with operators, and a pressure gauge verification site is provided with pressure gauge verification personnel; a pressure gauge calibrating personnel logs in the pressure gauge calibrating operation system through the computer (4), and the pressure gauge calibrating personnel inspects an environment video display interface, a calibrating operation video display interface, a pressure gauge plate video display interface and a pressure gauge calibrating information table in the pressure gauge calibrating operation system;
if the environment video display interface and the verification operation video display interface have stable video streams; the video display interface of the dial plate of the pressure gauge is not provided with the pressure gauge; if the numerical value in the information frame in the pressure gauge verification information table is empty, the remote metering pressure gauge verification system is determined to enter a state to be detected;
step 2, an operator scans a bar code of the pressure gauge to be checked through a code scanning device (7) on a pressure gauge checking operating platform on the pressure gauge, then inserts the pressure gauge to be checked into a gauge clamping mechanism (8) of the pressure gauge checking operating platform, and presses a confirmation switch (6) to complete clamping action of the pressure gauge to be checked by the gauge clamping mechanism (8); the controller (11) of the pressure gauge verification operation table sends information in the identification bar code and pressure gauge dial information identified by the image identification device (9) to a computer (4) in a pressure gauge verification place and fills the information into a pressure gauge verification information table;
step 3, judging whether the information in the pressure gauge verification information table is perfect and accurate by a verification worker; if the information is perfect and accurate, entering a state to be tested, and if the information is imperfect or inaccurate, supplementing and changing the information in the verification information table of the pressure gauge by a verification personnel, and entering the state to be tested after completing the supplementing and changing;
step 4, the calibrating personnel judge according to the corresponding video data of the environment video display interface, the calibrating operation video display interface and the pressure gauge dial video information interface, if the calibrating conditions are met, a calibrating operation button in the pressure gauge calibrating operation system is clicked, and the computer (4) sends a trigger signal of the calibrating operation button and a first pressurization value of the pressure gauge to be tested to a controller (11) of the pressure gauge calibrating operation table;
step 5, the controller (11) starts a pressure control system (12) to pressurize the clamped pressure gauge to be checked according to the received trigger signal and the pressurization value, when the standard pressure gauge indication value of the pressure gauge checking operation platform reaches the checking value, the image recognition device (9) is used for recognizing pressure gauge dial data and sending the recognized dial indication value to the computer (4), and the computer (4) correspondingly fills the value into a pressure gauge checking information table; the computer (4) sends the pressure value of the next pressurization to a controller (11) of the pressure gauge verification operation platform, the controller (11) drives a pressure control system (12) and an image recognition device (9) to continue pressurization and pressure gauge dial indication value recognition, and indication value information of the image recognition is sent to a pressure gauge verification data table of the computer (4) again; according to the information interaction method, the computer (4) sends pressure regulating signals for many times, the controller (11) of the pressure gauge verification operation table sends indication value data of pressure gauge verification for many times, and repeated operation is carried out according to the steps until the pressure gauge to be detected completes verification action;
step 6, after the pressure gauge verification operation table finishes verification actions on the pressure gauge, a verification worker judges whether the pressure gauge verification is qualified or not according to various data in the pressure gauge verification information table and issues a verification certificate;
and 7, taking down the pressure gauge after verification from the pressure gauge verification operation table by an operator, replacing the pressure gauge with a new pressure gauge to be detected, and repeating the steps 1-6.
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| CN202211556216.7A CN115855368A (en) | 2022-12-06 | 2022-12-06 | Remote metering pressure gauge calibration system and calibration method |
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Citations (8)
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