Dynamic pressure calibration device

Abstract

The utility model discloses a dynamic pressure calibration device which comprises a vacuum pump, the vacuum pump is communicated with a buffer container through an electromagnetic valve B, a dynamic pressure pipe is connected with the buffer container in a sealing mode through a soft connecting piece, a vacuum gauge, a temperature and humidity sensor and a humidity module are installed on the buffer container, and the humidity module is communicated with the buffer container. The device further comprises an electromagnetic valve B, the air outlet direction of the electromagnetic valve B is communicated with the vacuum pump, the air inlet direction of the electromagnetic valve B is connected with a clamping sleeve connector A, and the clamping sleeve connector A is welded to the buffer container and communicated with the buffer container. According to the utility model, the dynamic pressure pipes with different sizes and specifications can be selected according to use requirements to carry out different pressure ratios, so that the pressure measuring instrument can be calibrated and calibrated under different working conditions; traceability can be carried out according to a vacuum gauge, pressure fluctuation is avoided by adopting a buffer container, and stability is improved; temperature, humidity and pressure monitoring and multiple sealing can be achieved in the device, and accurate pressure matching of the device is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of dynamic pressure ratio matching, in particular to a dynamic pressure calibration device. Background Art

[0002] The sealing of a packaging system, also known as container seal integrity, refers to the ability of a pharmaceutical packaging system to prevent microbial intrusion and maintain the drug's various quality indicators in compliance with safety and quality requirements. During final product inspection, damaged or defective products should be identified and rejected, and strict safety measures must be in place to prevent contamination or failure of products released to the market due to seal integrity defects. With the continuous advancement of technology, traditional methods, such as colored water leak detection, which visually detects leaks by observing color changes, are prone to misjudgment and can contaminate pharmaceutical products. Discharge-type micropore leak detection can only detect conductive liquids and has significant limitations. Microbial leak detection methods cannot achieve rapid online detection and can easily allow microorganisms to invade pharmaceutical products, causing secondary contamination.

[0003] In recent years, tunable semiconductor laser absorption spectroscopy (TDLAS) technology has the advantages of no interference, low cost, fast response, high precision, high sensitivity, and no need to add reagents. It is widely used in the automotive, aerospace, and pharmaceutical fields, and can perform interference-free and rapid detection of vials.

[0004] In order to solve the problem that when measuring water vapor pressure of pressure measuring instruments for pharmaceutical packaging materials (vials / ampoules / blood collection tubes, etc.), the instruments need to be calibrated with different pressure ratios, the utility model is hereby proposed. Previously, pharmaceutical packaging materials of different sizes and specifications needed to be equipped with standard bottles of the same specifications and had a service life cycle. Professional departments issued relevant indicator parameter reports, which were cumbersome to use and had a wide variety of types.

[0005] Contents of this utility model

[0006] The purpose of the utility model is to provide a dynamic pressure calibration device.

[0007] One purpose of the present invention can be achieved by the following technical solutions:

[0008] A dynamic pressure calibration device includes a vacuum pump, which is connected to a buffer container through an electromagnetic valve B. The dynamic pressure tube is sealed to the buffer container through a soft connector. A vacuum gauge, a temperature and humidity sensor, and a humidity module are installed on the buffer container, and the humidity module is connected to the buffer container.

[0009] Preferably, it also includes a solenoid valve B, the outlet direction of the solenoid valve B is connected to the vacuum pump, the inlet direction of the solenoid valve B is connected to the ferrule joint A, the ferrule joint A is welded on the buffer container, and the ferrule joint A is connected to the buffer container.

[0010] Furthermore, a ferrule fitting B is welded on the buffer container. The intake direction of the solenoid valve A is communicated with the humidity module, and the outlet direction of the solenoid valve A is communicated with the ferrule fitting B.

[0011] Preferably, it further includes a relay board which is respectively connected to the solenoid valve A and the solenoid valve B, and the relay board controls the on / off of the solenoid valve A and the solenoid valve B.

[0012] Furthermore, it further includes an external power supply and a DC24V power board. After stepping down the external power supply, it passes through the DC24V power board, and the DC24V power board supplies power to the vacuum gauge.

[0013] Furthermore, it further includes a dynamic pressure calibration device housing. A handle is fixedly installed on the upper end surface of the dynamic pressure calibration device housing, and the buffer container is installed on the lower end surface of the dynamic pressure calibration device housing.

[0014] Preferably, a dynamic pressure tube installation cavity is provided on the left end surface of the dynamic pressure calibration device housing. The dynamic pressure tube is installed in the dynamic pressure tube installation cavity through a clamping member, and a hose winding bracket is also provided in the dynamic pressure tube installation cavity.

[0015] Preferably, a dynamic pressure tube installation cavity housing is provided on the dynamic pressure tube installation cavity.

[0016] Furthermore, a liquid crystal display screen is fixedly installed on the front end surface of the dynamic pressure calibration device housing.

[0017] Preferably, a humidity module housing is installed on the rear end surface of the dynamic pressure calibration device housing, and the humidity module is placed in the humidity module housing.

[0018] Beneficial technical effects:

[0019] The utility model can select different sizes and specifications of dynamic pressure tubes (replaceable) according to the use requirements for different pressure ratios, so as to calibrate and calibrate the pressure measuring instrument under different working conditions; and it can be traced according to the vacuum gauge, and a buffer container is used to avoid pressure fluctuations and improve stability; temperature, humidity and pressure monitoring can be realized inside the device, and multiple seals are used to achieve accurate pressure ratio of the device. The whole device has a high integration degree, the design scheme has multiple functions and uses, and has strong versatility; it can be widely applied to the pressure calibration and calibration device supporting the pressure measuring instrument in the transparent sealed container of food and medicine, and has a wide range of applications. Description of the Drawings

[0020] The following further describes the present utility model in conjunction with the drawings.

[0021] Figure 1 It is a schematic block diagram of the principle of the dynamic pressure calibration device; the long solid line is the gas path connection, the long dashed line is the power supply connection, and the short dashed line is the communication connection.

[0022] Figure 2 This is a schematic diagram of the internal structure of the dynamic pressure calibration device of the present utility model.

[0023] Figure 3 This is a schematic diagram of a partial internal structure of the dynamic pressure calibration device of the present utility model.

[0024] Figure 4 This is a schematic diagram of the shell structure of the dynamic pressure calibration device of the present utility model.

[0025] Figure 5 This is another schematic diagram of the shell of the dynamic pressure calibration device of the present utility model.

[0026] Figure 6 This is a schematic diagram of the side structure of the shell of the dynamic pressure calibration device of the present utility model.

[0027] Figure 7 This is a schematic diagram of the side structure of the installation cavity of the dynamic pressure tube of the present utility model.

[0028] In the figure: 1, dynamic pressure tube; 2, humidity module; 3-1, solenoid valve A; 3-2, solenoid valve B; 4, vacuum gauge; 5, temperature and humidity sensor; 6, relay board; 7, DC24V power supply board; 8, DC3.3V power supply board; 9, DC5V power supply board; 10, liquid crystal display screen; 11, single-chip microcomputer control board; 12, vacuum pump; 13 - buffer container; 14, installation cavity of dynamic pressure tube; 15, handle; 16, shell of dynamic pressure calibration device; 17, USB external connection; 18, switching power supply; 19-1, ferrule joint A; 19-2, ferrule joint B; 20, hose winding bracket; 21, humidity module shell; 22, shell of installation cavity of dynamic pressure tube; 23, external power supply; 24, positioning part. Detailed implementation manners

[0029] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0030] As Figure 1-7As shown in the figure, a dynamic pressure calibration device includes a buffer container 13, a vacuum pump 12. The vacuum pump 12 is connected to the buffer container 13. The dynamic pressure tube 1 is hermetically connected to the buffer container 13 through a flexible connector. A vacuum gauge 4, a temperature and humidity sensor 5, and a humidity module 2 are installed on the buffer container 13. The humidity module 2 is connected to the buffer container 13 to ensure that there is water vapor in the gas in the buffer container 13. The dynamic pressure tube 1 can be replaced, and the buffer container 13 plays a role in stabilizing the pressure.

[0031] It also includes a solenoid valve B3-2. The outlet direction of the solenoid valve B3-2 is connected to the vacuum pump 12, and the inlet direction of the solenoid valve B3-2 is connected to a ferrule joint A19-1. The ferrule joint A19-1 is welded to the buffer container 13, and the ferrule joint A19-1 is connected to the buffer container 13.

[0032] A ferrule joint B19-2 is welded to the buffer container 13. The inlet direction of the solenoid valve A3-1 is connected to the humidity module 2, and the outlet direction of the solenoid valve A3-1 is connected to the ferrule joint B19-2.

[0033] It also includes a relay board 6. The relay board 6 is respectively connected to the solenoid valve A3-1 and the solenoid valve B3-2. The relay board 6 controls whether the solenoid valve A3-1 and the solenoid valve B3-2 are turned on or off to maintain or evacuate the vacuum.

[0034] It also includes an external power supply 23 and a DC24V power supply board 7. The external power supply is 220V. After stepping down the 220V external power supply through the DC24V power supply board 7, the DC24V power supply board 7 supplies power to the vacuum gauge 4, the relay board 6, and the vacuum pump 12.

[0035] It also includes a single-chip microcomputer control board 11. The vacuum gauge 4 outputs a pressure signal to the single-chip microcomputer control board 11.

[0036] It also includes a housing 16 of the dynamic pressure calibration device. A handle 15 is fixedly installed on the upper end surface of the housing 16 of the dynamic pressure calibration device. The buffer container 13 is installed on the lower end surface of the housing 16 of the dynamic pressure calibration device. The vacuum pump 12, the vacuum gauge 4, the temperature and humidity sensor 5, the ferrule joint A19-1, and the ferrule joint B19-2 are integrated above the buffer container 13, and the pipeline is welded to the buffer container 13.

[0037] An electric plug hole 23 is provided on the back of the housing 16 of the dynamic pressure calibration device.

[0038] On the left end face of the housing 16 of the dynamic pressure calibration device, there is a dynamic pressure tube installation cavity 14. Inside the dynamic pressure tube installation cavity 14, the dynamic pressure tube 1 is installed through a clamping member 24. Inside the dynamic pressure tube installation cavity 14, there is also a hose winding bracket 20. The soft connecting member is preferably a hose, which is placed on the hose winding bracket 20 and is connected to the solenoid valve A3-1. On the dynamic pressure tube installation cavity 14, there is a housing 22 of the dynamic pressure tube installation cavity, and the housing 22 of the dynamic pressure tube installation cavity plays a role in protecting the dynamic pressure tube installation cavity 14.

[0039] On the right end face of the housing 16 of the dynamic pressure calibration device, there is a USB external connection 17 for importing and exporting data information, and there is also a switching power supply 18, which controls whether the vacuum pump 12 works; on the front end face of the housing 16 of the dynamic pressure calibration device, a liquid crystal screen 10 is fixedly installed for controlling the whole system; on the rear end face of the housing 16 of the dynamic pressure calibration device, an external power supply 23, a DC24V power board 7, a DC3.3V power board 8, a DC5V power board 9, a single-chip microcomputer control board 11, a solenoid valve A3-1, and a solenoid valve B3-2 are installed. On the rear end face of the housing 16 of the dynamic pressure calibration device, a humidity module housing 21 is installed, and the humidity module 2 is placed in the humidity module housing 21. The humidity module 2 ensures that there is moisture in the dynamic pressure tube 1 (replaceable) under the vacuum state.

[0040] The external power supply 23 steps down and supplies power to the single-chip microcomputer control board 11 through the DC3.3V power board 8. The vacuum gauge 4 and the temperature and humidity sensor 5 send the monitored data back to the single-chip microcomputer control board 11. The single-chip microcomputer control board 11 is connected to the liquid crystal screen 10, which is convenient for the operator to touch and design relevant experimental parameters.

[0041] The external power supply 23 steps down and supplies power to the temperature and humidity sensor 5 through the DC5V power board 9.

[0042] [[ID=

[0043] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment contains only an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A dynamic pressure calibration device, characterized in that, It includes a vacuum pump, which is connected to the buffer container through an electromagnetic valve B. The dynamic pressure pipe is sealed to the buffer container through a soft connector. A vacuum gauge, a temperature and humidity sensor, and a humidity module are installed on the buffer container, and the humidity module is connected to the buffer container.

2. The dynamic pressure calibration device according to claim 1, wherein It also includes a solenoid valve B, the outlet direction of the solenoid valve B is connected to the vacuum pump, the inlet direction of the solenoid valve B is connected to the ferrule joint A, the ferrule joint A is welded to the buffer container, and the ferrule joint A is connected to the buffer container.

3. The dynamic pressure calibration device according to claim 2, wherein A ferrule joint B is welded on the buffer container, the air inlet direction of the solenoid valve A is connected to the humidity module, and the air outlet direction of the solenoid valve A is connected to the ferrule joint B.

4. The dynamic pressure calibration device according to claim 3, wherein It also includes a relay board, which is connected to the solenoid valve A and the solenoid valve B respectively, and the relay board controls the on and off of the solenoid valve A and the solenoid valve B.

5. The dynamic pressure calibration device according to claim 4, characterized in that, It also includes an external power supply and a DC24V power supply board. The external power supply is stepped down and then passed through the DC24V power supply board, which supplies power to the vacuum gauge.

6. The dynamic pressure calibration device according to claim 4, characterized in that, It also includes a dynamic pressure calibration device shell, a handle is fixedly installed on the upper end surface of the dynamic pressure calibration device shell, and a buffer container is installed on the lower end surface of the dynamic pressure calibration device shell.

7. The dynamic pressure calibration device according to claim 6, characterized in that, The left end face of the shell of the dynamic pressure calibration device is provided with a dynamic pressure tube installation cavity, in which the dynamic pressure tube is installed through a positioning piece, and a hose winding bracket is also provided in the dynamic pressure tube installation cavity.

8. The dynamic pressure calibration device according to claim 7, characterized in that A dynamic pressure tube installation cavity shell is provided on the dynamic pressure tube installation cavity.

9. The dynamic pressure calibration device according to claim 6, characterized in that A liquid crystal screen is fixedly mounted on the front end surface of the shell of the dynamic pressure calibration device.

10. The dynamic pressure calibration device according to claim 6, characterized in that, A humidity module housing is installed on the rear end surface of the dynamic pressure calibration device housing, and the humidity module is placed in the humidity module housing.

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