Pressure instrument calibration system

Abstract

The invention discloses a pressure instrument calibration system, and belongs to the technical field of instrument calibration, the pressure instrument calibration system comprises a pressure generation module, a pressure calibrator and a control terminal, a plurality of pressure controllers with different pressure output ranges are arranged, and a plurality of detection points are correspondingly designed based on each pressure controller, so that the pressure output range of the pressure calibrator is adjusted; and the control terminal is matched to regulate and control the output pressure of the pressure controller, so that quick calibration of pressure instruments with different specifications and measuring ranges can be realized.

Description

Technical Field

[0001] This application belongs to the technical field of instrument calibration, and specifically relates to a pressure instrument calibration system. Background Art

[0002] With the increase in the number of pressure instrument devices, the demand for quick calibration of a large number of devices with different specifications and ranges is also increasing day by day. Currently, the existing calibration equipment for pressure instruments can only carry out multi-channel calibration technology for the same model and range, and cannot meet the quick calibration technology requirements for a large number of pressure instruments with different specifications and ranges. The main problems are as follows:

[0003] (1) Only single calibration can be carried out each time, and the efficiency is very low;

[0004] (2) It cannot communicate with the current metrology management system in the institute, and cannot realize full-closed-loop metrology informatization management;

[0005] (3) The connection method can only use the old method of replacing connectors and wrenches, often resulting in poor sealing and frequent replacement of matching connectors. The metrology takes a long time. Especially during the peak period of engine model tests, several test departments often send samples for inspection at the same time, and it is impossible to quickly complete the calibration in a short time, thus affecting the model development task.

[0006] Application Content

[0007] The purpose of this application is to provide a pressure instrument calibration system to solve the problem of quick calibration of a large number of pressure instruments with different specifications and ranges proposed in the above background art.

[0008] To achieve the above purpose, this application provides the following technical solution: A pressure instrument calibration system, including:

[0009] A pressure generation module, including a plurality of pressure controllers with different pressure output ranges. The output end of a single pressure controller is connected with at least one quick connector for installing the instrument to be inspected through a pipeline;

[0010] A plurality of pressure calibrators, connected to the pressure controller and the instrument to be inspected, and corresponding to the pressure controller one by one;

[0011] A control terminal, connected to the pressure calibrator and the pressure generation module, and configured to adjust the output pressure of the pressure generation module and calculate the uncertainty of the instrument to be inspected based on the output data of the pressure calibrator;

[0012] A scanning device, connected to the control terminal, and configured to read the information of the instrument to be inspected.

[0013] Further, the pressure generating module further includes a pneumatic generating device and a pneumatic booster device connected by a pipeline, and the output end of the pneumatic booster device is connected to the pressure controller.

[0014] Further, the quick connector includes:

[0015] A base member having an axially extending main body portion. A through hole extending along its axis is formed in the main body portion, and a first connection end and a second connection end are provided in the axial direction. The first connection end is provided with a threaded structure for connecting with a pipeline, and the second connection end is provided with a tapered groove adapted to the tapered connection head of the instrument to be inspected. At least one sealing groove is formed on the tapered groove;

[0016] A plurality of flap members are assembled on the base member and are distributed in a circular array. The flap members are configured to be able to switch between a first position and a second position. In the first position, the plurality of flap members are closed to form a rotating body connected to the instrument to be inspected. In the second position, the plurality of flap members are separated from each other to disconnect from the instrument to be inspected.

[0017] Further, the base member further includes a first flange portion and a second flange portion radially extending outward from the outer surface of the main body portion. The second flange portion is located between the second connection end of the main body portion and the first flange portion in the axial direction, and an assembly groove is formed between the first flange portion and the second flange portion. The outer diameter of the first flange portion is larger than the outer diameter of the second flange portion. The flap member has an assembly section, a first stepped section, a second stepped section, and a third stepped section arranged in sequence in the axial direction. The assembly section is configured to be able to move in the assembly groove, and a threaded structure is provided on the inner surface of the third stepped section.

[0018] Further, in the first position, the inner surface of the first stepped section of the flap member fits with the outer surface of the second flange portion, the inner surface of the second stepped section fits with the outer surface of the main body portion, and the outer surface of the third stepped section is configured as a tapered surface that extends in the axial direction and gradually expands in the radial direction.

[0019] Further, the quick connector further includes:

[0020] A sleeve member having an axially extending sleeve portion and a limiting portion and a driving portion respectively extending radially inward from both axial ends of the sleeve portion. The inner surface of the sleeve portion fits with the outer surface of the first flange portion;

[0021] An elastic member is arranged in the axial direction, and one end of the elastic member is connected to the axial end face of the first flange portion, and the other end is connected to the driving portion of the sleeve member.

[0022] Further, the control terminal transmits data unidirectionally to the classified terminal through a one-way gateway.

[0023] Further, the calibration system further includes a TDM system, and data is transmitted unidirectionally between the control terminal and the TDM system, and between the TDM system and the classified terminal.

[0024] Further, the control terminal stores the data of the instrument to be inspected.

[0025] Further, a check valve is provided on the connecting pipeline between the pressure controller and the quick connector.

[0026] Compared with the prior art, the beneficial effects of the present application are as follows:

[0027] (1) By arranging multiple pressure controllers with different pressure output ranges and correspondingly designing multiple detection points for each pressure controller, and coordinating the control terminal to regulate the output pressure of the pressure controller, the present application can achieve the quick calibration of pressure gauges with different specifications and ranges.

[0028] (2) The present application correspondingly designs a quick connector structure for the pressure gauge with a conical connector. Through the design of the conical groove and the sealing groove on the base member in the quick structure, the tightness of the connection position between the quick connector and the pressure gauge can be maintained under high-pressure use, and the connection calibration can be quickly completed in a short time, shortening the metering time.

[0029] (3) Through the design of unidirectional data transmission, the present application can automatically upload data after the instrument calibration is completed, realizing the information management of the calibration data. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a schematic diagram of the calibration system;

[0031] Figure 2 is an overall schematic diagram of the quick connector;

[0032] Figure 3 is a partial schematic diagram of the quick structure;

[0033] Figure 4 is Figure 3 the enlarged view at A in

[0034] Figure 5 is a flow chart of verification.

[0035] In the figure:

[0036] 100. Base member; 100a. Main body part; 100b. First flange part; 100c. Second flange part; 101. Assembly groove; 102. Conical groove; 103. Sealing groove;

[0037] 200, flap member; 200a, assembly section; 200b, first stepped section; 200c, second stepped section; 200d, third stepped section; 201, conical surface;

[0038] 300, sleeve member; 300a, sleeve portion; 300b, limiting portion; 300c, driving portion;

[0039] 400, elastic member. Detailed implementation manners

[0040] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0041] A pressure gauge calibration system (hereinafter referred to as the calibration system) includes a pressure generation module, a terminal module, and a calibration module. Refer to Figure 1 ( Figure 1 The number of pressure controllers and the number of gauges to be inspected connected to the pressure control are both exemplary numbers in

[0042] Continue to refer to Figure 1, the above calibration module includes pressure calibrators corresponding to the number of pressure controllers. The pressure calibrators are connected to the pressure controllers, the control terminal, and the instrument under test. Moreover, the specifications of the pressure calibrators are adapted to those of the pressure controllers, that is, the calibration range of the pressure calibrators is adapted to the pressure output range of the pressure controllers. Exemplarily, taking the pressure output ranges of the above three pressure controllers as an example, at this time, three pressure calibrators are also configured. The ranges of the three pressure calibrators are (0-7) MPa, (0-25) MPa, and (0-35) MPa respectively. Through the pressure calibrators, the output pressure of the pressure controllers can be calibrated, and the calibration data can be transmitted to the control terminal. The control terminal can adjust the pressure output module based on the calibration data of the pressure calibrators so that the output pressure of the pressure controllers is at the standard value, that is, the pressure controllers output the standard pressure required for calibration to the instrument under test (such as pressure sensors, pressure transmitters, and pressure gauges). At the same time, the pressure calibrators can process the output data of the instrument under test and upload it to the control terminal. At this time, the output data of the pressure controllers and the output data of the instrument under test are both output and transmitted to the control terminal via the pressure calibrators. The control terminal calculates and processes the two types of data to obtain the uncertainty of the instrument under test.

[0043] Continue to refer to Figure 1 , the output end of the above pressure controller is connected with at least one quick connector through a pipeline (in the figure, it is exemplified that a single pressure controller is connected with 3 quick connectors). Based on this quick connector, the quick installation of the pressure instrument can be realized, that is, the quick connection between the pressure instrument and the pressure controller can be realized to carry out the subsequent calibration process. Exemplarily, the number of the above quick connectors can be arranged according to actual needs. Preferably, a single pressure controller is connected with multiple quick connectors to realize the calibration of multiple pressure instruments with the same range, and in combination with the setting of multiple pressure controllers with different specifications, to realize the calibration of multiple pressure instruments with different ranges. Exemplarily, taking the example that a single pressure controller is connected with 5 quick connectors and there are three pressure controllers with different specifications correspondingly, at this time, the calibration system can simultaneously realize the calibration of 15 instruments under test.

[0044] In some embodiments, refer to Figure 2 and Figure 3, is a schematic diagram of an exemplary quick connector, which is used to realize the calibration installation of a pressure gauge with a tapered connector. Specifically, the quick connector includes a base member 100, a sleeve member 300, and a plurality of lobe members 200. The base member 100 has a main body portion 100a, which is configured as a rotating body member formed by rotating around the axis O. A through hole extending along the axis O is formed in the main body portion 100a. At the same time, the main body portion 100a has a first connection end and a second connection end in the axial direction. The first connection end is configured as the connection end of the quick connector to the pipeline, that is, the pressure controller is connected to the first connection end of the base member 100 through a pipeline. Exemplarily, the outer surface of the main body portion 100a of the base member 100 is provided with threads at the first connection end, and the connection to the pipeline is realized through threaded connection. Refer to Figure 3 , the second connection end of the main body portion 100a is configured as the docking end of the base member 100 to the instrument device. Specifically, a tapered groove 102 adapted to the tapered connector of the instrument to be inspected is provided at the second connection end of the main body portion 100a, and at least one sealing groove 103 for accommodating a sealing ring is formed on the surface of the tapered groove 102. When the quick connector is connected to the instrument to be inspected, the outer surface of the tapered connector of the instrument to be inspected contacts the surface of the tapered groove 102 of the main body portion 100a to form a first seal, and the second seal is realized through the sealing ring in the sealing groove 103, thereby improving the sealing performance of the connection position between the base member 100 and the instrument to be inspected, so that the calibration system can maintain the sealing performance of the connection position between the pressure gauge and the quick structure during the calibration of a large-range pressure gauge (such as a 0-35 Mpa pressure gauge).

[0045] Continue to refer to Figure 3 , the base member 100 further has a first flange portion 100b and a second flange portion 100c. Both the first flange portion 100b and the second flange portion 100c are formed by radially extending outward from the outer surface of the main body portion 100a. The second flange portion 100c is disposed adjacent to the second connection end of the base member 100. The first flange portion 100b is located between the first flange portion 100b and the first connection end of the base member 100 in the axial direction, and the first flange portion 100b and the second flange portion 100c are spaced apart in the axial direction. At the same time, the outer diameter of the first flange portion 100b is greater than the outer diameter of the second flange portion 100c to form an assembly groove 101 between the first flange portion 100b and the second flange portion 100c (refer to Figure 3 ).

[0046] Refer to Figure 3 , the plurality of lobe members 200 are assembled on the base member 100, and the plurality of lobe members 200 are distributed in a circular array. At the same time, the single lobe member 200 is configured to be able to switch between a first position and a second position. In the first position (that is, Figure 3In the first position, multiple flap members 200 close inward to form a rotating body formed around the axis O for connecting with the instrument to be inspected. In the second position, the multiple flap members 200 separate outward to separate the flap members 200 from the instrument to be inspected. Specifically, the above-mentioned flap members 200 are arranged to extend in the axial direction and have an assembly section 200a, a first stepped section 200b, a second stepped section 200c, and a third stepped section 200d arranged in sequence in the axial direction. The assembly section 200a is configured to be able to move within the assembly groove 101 and cooperate with the subsequent actions of the sleeve member 300 and the elastic member 400 to realize the conversion of the flap member 200 between the first position and the second position. The inner diameters of the first stepped section 200b, the second stepped section 200c, and the third stepped section 200d decrease in sequence. In the first position, the inner surface of the first stepped section 200b fits with the outer surface of the second flange portion 100c, the inner surface of the second stepped section 200c fits with the outer surface of the main body portion 100a of the base member 100, and the outer surface of the third stepped section 200d is configured as a conical surface 201 that extends in the axial direction and gradually expands in the radial direction. A threaded structure is formed on the inner surface of the third stepped section 200d. When the multiple flap members 200 close in the first position, the third stepped sections 200d of the multiple flap members 200 together form a threaded sleeve structure, and based on this threaded sleeve structure, the quick connector is connected to the instrument to be inspected.

[0047] Refer to Figure 2, The above-mentioned sleeve member 300 has a sleeve portion 300a formed by axial extension and a limiting portion 300b and a driving portion 300c respectively formed by radially inward extension from both axial ends of the sleeve portion 300a. And the above-mentioned sleeve member 300 is configured to be able to linearly move in the axial direction. By the movement of the sleeve member 300 in the axial direction, the conversion of the valve body member 200 between the first position and the second position is realized. Specifically, the inner circumferential surface of the sleeve portion 300a is in contact with the outer surface of the first flange portion 100b of the base member 100, that is, the sleeve portion 300a can slide along the surface of the first flange portion 100b to realize the axial movement of the sleeve member 300. Further, the above-mentioned quick connector further includes an elastic member 400 (such as a spring) axially extending. One end of the elastic member 400 is connected to the axial end surface of the first flange portion 100b, and the other end is connected to the driving portion 300c of the sleeve member 300. Based on the elastic force of the elastic member 400 and the action of the limiting portion 300b of the sleeve member 300, the sleeve member 300 can be held in this position. At the same time, during the linear movement of the sleeve member 300, the driving portion 300c of the sleeve member 300 contacts or separates from the conical outer surface of the third stepped section 200d of the valve body member 200 to drive the valve body member 200 to switch between the first position and the second position. Based on the position switching design of the valve body member 200, the connection and disassembly process of the quick connector and the instrument to be inspected is simplified. That is, the connection and disassembly of the quick connector and the instrument to be inspected can be realized only by operating the sleeve member 300, thereby simplifying the installation operation of the instrument to be inspected. At the same time, with the design of the conical groove 102 and the sealing groove 103 on the base member 100, the sealing performance of the connection position can be maintained while simplifying the installation and disassembly process.

[0048] In some embodiments, the above calibration system is further configured with a scanning device, which is connected to the control terminal. Correspondingly, a two-dimensional code is configured on the pressure gauge to be inspected (referred to as the gauge to be inspected). Based on the scanning device, the calibration system can read the information of the product to be inspected. In some instances, the database in the control terminal stores the data of the gauge to be inspected. At this time, the calibration system can display the information of the gauge to be inspected based on the read data (for example, presented in a table). Meanwhile, the calibration system can save the data during the verification process using the read product information (such as the product serial number) as an index, and process and calculate the data through the pressure verification system in the control terminal to obtain the uncertainty of the product, determine whether it meets the tolerance requirements, and automatically process the verification data to generate the original verification record and the verification certificate. Exemplarily, the verification calculation process of the gauge to be inspected is as follows: For pressure sensors and pressure transmitters, the data output by the pressure sensor or pressure transmitter is transmitted to the terminal module via a pressure calibrator. The terminal module compares and calculates the output data of the gauge to be inspected processed by the pressure calibrator and the output data of the pressure controller to obtain the uncertainty, thereby realizing the verification of the pressure sensor and the pressure transmitter. For analog pressure gauges, the pressure value of the analog pressure gauge is read through a machine vision recognition system. The control terminal compares and calculates the read pressure value with the pressure value output by the pressure calibrator to obtain the uncertainty. Specifically, referring to Figure 5 , the working process of the calibration system is as follows: The staff logs in to the software on the control terminal (such as a computer) and selects the type of the gauge to be inspected (i.e., periodic verification or project verification). Subsequently, the information of the gauge to be inspected is collected through the scanning device. At this time, the system reads the information of the gauge to be inspected through the database in the control terminal and verifies the numbers of multiple gauges to be inspected. If there are duplicate numbers among multiple gauges to be inspected, the read information is manually adjusted. After the numbers of the gauges to be inspected correspond to the database system and the verification points, the calibration system automatically operates to perform the verification process and generate a verification record.

[0049] In some embodiments, when generating the original verification record and the verification certificate, the above control terminal can correspondingly output a personalized signature label of the staff for pasting after the verification is completed.

[0050] In some embodiments, the above calibration system further includes a LIMS (Laboratory Information Management System) deployed in a local server. The laboratory information management system is configured as a classified terminal, and the control terminal transmits data unidirectionally to the classified terminal through a one-way network gate. Based on this design, after the verification is completed, the verification data can be transmitted to the classified terminal in real time, without the need for the operator to export the verification data and manually input it on another computer connected to the classified terminal. In some embodiments, after the control terminal uploads the data to the TDM (Technical Data Management), it is uploaded to the classified terminal via the TDM system.

[0051] Although the embodiments of the present application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present application. The scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A pressure instrument calibration system, characterized in that: include: The pressure generating module comprises a plurality of pressure controllers with different pressure output ranges, wherein the output end of a single pressure controller is connected to at least one quick connector for installing the instrument to be inspected through a pipeline; A plurality of pressure calibrators, connected to the pressure controller and the instrument to be tested, and corresponding one to one with the pressure controller; A control terminal connected to the pressure calibrator and the pressure generating module, and configured to adjust the output pressure of the pressure generating module based on the output data of the pressure calibrator and calculate the uncertainty of the instrument to be inspected; The scanning device is connected to the control terminal and is configured to read the information of the instrument to be inspected.

2. A pressure instrument calibration system according to claim 1, characterized in that: The pressure generating module further comprises an air pressure generating device and an air pressure boosting device connected via a pipeline, and an output end of the air pressure boosting device is connected to the pressure controller.

3. A pressure instrument calibration system according to claim 1, characterized in that: The quick connector comprises: The base component (100) comprises a main body (100a) extending axially, wherein a through hole extending along the axis thereof is formed in the main body (100a), and the main body (100a) comprises a first connection end and a second connection end in the axial direction, wherein the first connection end is provided with a threaded structure connected to a pipeline, and the second connection end is provided with a tapered groove (102) adapted to a tapered connector of an instrument to be inspected, and at least one sealing groove (103) is provided on the tapered groove (102); A plurality of petal components (200) are assembled on the base component (100) and distributed in a circular array. The petal components (200) are configured to be switchable between a first position and a second position. In the first position, the plurality of petal components (200) are closed together to form a rotating body connected to the instrument to be inspected. In the second position, the plurality of petal components (200) are separated from each other to release the connection with the instrument to be inspected.

4. A pressure instrument calibration system according to claim 3, characterized in that: The base component (100) also includes a first flange portion (100b) and a second flange portion (100c) formed by radially extending outward from the outer surface of the main body portion (100a), the second flange portion (100c) being located between the second connecting end of the main body portion (100a) and the first flange portion (100b) in the axial direction, and an assembly groove (101) is formed between the first flange portion (100b) and the second flange portion (100c), and the outer diameter of the first flange portion (100b) is greater than the outer diameter of the second flange portion (100c), the petal body component (200) has an assembly section (200a), a first step section (200b), a second step section (200c) and a third step section (200d) sequentially arranged in the axial direction, the assembly section (200a) being configured to be movable in the assembly groove (101), and a threaded structure is provided on the inner surface of the third step section (200d).

5. A pressure instrument calibration system according to claim 4, characterized in that: In the first position, the inner surface of the first step section (200b) of the petal body component (200) fits with the outer surface of the second flange portion (100c), the inner surface of the second step section (200c) fits with the outer surface of the main body portion (100a), and the outer surface of the third step section (200d) is configured as a conical surface (201) that extends in the axial direction and gradually expands in the radial direction.

6. A pressure instrument calibration system according to claim 5, characterized in that: The quick connector also includes: A sleeve component (300), the sleeve component (300) comprising an axially extending sleeve portion (300a) and a limiting portion (300b) and a driving portion (300c) respectively formed by radially inwardly extending from two axial ends of the sleeve portion (300a), the inner surface of the sleeve portion (300a) being in contact with the outer surface of the first flange portion (100b); The elastic member (400) is arranged along the axial direction, and one end of the elastic member (400) is connected to the axial end surface of the first flange portion (100b), and the other end is connected to the driving portion (300c) of the sleeve member (300).

7. A pressure instrument calibration system according to claim 1, characterized in that: The control terminal transmits data unidirectionally to the confidential terminal through a unidirectional network switch.

8. A pressure instrument calibration system according to claim 7, characterized in that: The calibration system also includes a TDM system, and data is transmitted unidirectionally between the control terminal and the TDM system and between the TDM system and the confidential terminal.

9. A pressure instrument calibration system according to claim 1, characterized in that: The control terminal stores the data of the instrument to be inspected.

10. A pressure instrument calibration system according to claim 1, characterized in that: A check valve is arranged on the connecting pipeline between the pressure controller and the quick connector.

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