CN216050449U - Portable full-sealed pressure generating device - Google Patents
Portable full-sealed pressure generating device Download PDFInfo
- Publication number
- CN216050449U CN216050449U CN202122518381.0U CN202122518381U CN216050449U CN 216050449 U CN216050449 U CN 216050449U CN 202122518381 U CN202122518381 U CN 202122518381U CN 216050449 U CN216050449 U CN 216050449U
- Authority
- CN
- China
- Prior art keywords
- air
- pressure
- outlet
- generating device
- valve
- 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
Landscapes
- Measuring Fluid Pressure (AREA)
- Control Of Fluid Pressure (AREA)
Abstract
The utility model relates to a portable full-sealed pressure generating device, which comprises a first flow limiting valve connected to the air outlet end of a pressure tank and a second flow limiting valve connected to the air inlet end of the pressure tank, wherein the outlet of the first flow limiting valve is respectively connected with a pressure transmitter and an air path outlet; the inlet of the second flow limiting valve is sequentially connected with the first electromagnetic valve, the one-way valve, the second electromagnetic valve and the air pump; the air outlet end of the pressure tank, the first flow limiting valve, the pressure transmitter and the air path outlet are connected through a pipeline to form a fully-sealed pressure air path; the air pump, the second electromagnetic valve, the one-way valve, the first electromagnetic valve, the second flow limiting valve and the air inlet end of the pressure tank are connected through a pipeline to form an air pressurization air path; the pressure tank is an air bag type pressure tank, an air bag is arranged in the pressure tank, and the air bag type pressure tank enables a fully-sealed pressure air path to be isolated from the external environment. The air pump is used for pressurizing the pressure air path, and the air bag type pressure tank is used for completely isolating the fully-sealed pressure air path from the outside, so that the sealing performance of the fully-sealed pressure air path is ensured, and no leakage of air is realized.
Description
Technical Field
The utility model relates to the technical field of pressure generation and transmission, in particular to a portable full-sealed pressure generating device.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
The pressure instrument is a commonly used monitoring instrument in various industries, a pressure generating device is formed by a piston and a cylinder in the prior art, so that the calibration process of the pressure instrument is completed, and the self tightness of the pressure generating device to calibration gas influences the calibration result of the pressure instrument in the calibration process. For industries with strict requirements on gas tightness, such as chemical industry, fuel gas and the like, the existing pressure generating device is difficult to meet the tightness in the checking process of the pressure instrument.
SUMMERY OF THE UTILITY MODEL
In order to solve at least one technical problem in the background art, the utility model provides a portable full-sealed pressure generating device, which utilizes an air pump to pressurize a pressure air path, and the full-sealed pressure air path is completely isolated from the outside through an air bag type pressure tank, thereby ensuring the sealing performance of the full-sealed pressure air path and realizing no leakage and no discharge of air.
In order to achieve the purpose, the utility model adopts the following technical scheme:
the utility model provides a portable full-sealed pressure generating device, which comprises a first flow limiting valve connected to the air outlet end of a pressure tank and a second flow limiting valve connected to the air inlet end of the pressure tank, wherein the outlet of the first flow limiting valve is respectively connected with a pressure transmitter and an air path outlet; the inlet of the second flow limiting valve is sequentially connected with the first electromagnetic valve, the one-way valve, the second electromagnetic valve and the air pump;
the air outlet end of the pressure tank, the first flow limiting valve, the pressure transmitter and the air path outlet are connected through a pipeline to form a fully-sealed pressure air path;
the air pump, the second electromagnetic valve, the one-way valve, the first electromagnetic valve, the second flow limiting valve and the air inlet end of the pressure tank are connected through a pipeline to form an air pressurization air path;
the pressure tank is an air bag type pressure tank, an air bag is arranged in the pressure tank, and the air bag type pressure tank enables a fully-sealed pressure air path to be isolated from the external environment.
The totally enclosed pressure gas circuit and the air pressurization gas circuit are arranged in the shell, and the shell is also internally provided with a control circuit.
The control circuit comprises a display device, an output device and an interface which are respectively connected with the microprocessor, and the microprocessor is respectively connected with the first electromagnetic valve, the second electromagnetic valve, the air pump and the pressure transmitter.
The shell is provided with a handle and a panel, and the gas path outlet is connected to the panel.
The inlet of the air pump is communicated with the external environment, and the outlet of the air pump is connected with the inlet of the second electromagnetic valve.
The outlet of the second electromagnetic valve is connected with the inlet of the one-way valve.
The outlet of the one-way valve is connected with the inlet of the first electromagnetic valve.
The first electromagnetic valve is provided with two outlets, the first outlet is connected with the inlet of the second flow limiting valve, and the second outlet is provided with an exhaust port.
Compared with the prior art, the above one or more technical schemes have the following beneficial effects:
1. on the basis of meeting the portability of the calibration process of the pressure gauge, the air bag type pressure tank is utilized to divide the air path into a fully-sealed pressure air path and an air pressurization air path which are independent from each other, so that the fully-sealed pressure air path is completely isolated from the outside, and the sealing performance of the fully-sealed pressure air path and the leakage and discharge of no gas in the calibration process are ensured.
2. During the calibration process of the pressure gauge, the air bag is filled with gas which is homogeneous to the operation condition of the pressure gauge, so that the calibration process of the pressure gauge is more suitable for the actual operation condition.
3. In the checking process, the pressure at the outlet of the gas path is transmitted to a microprocessor of the control circuit through a pressure transmitter connected with the control circuit and is sent to an output device.
4. In the checking process, the pressure generated by the air pressurization gas circuit is controlled through the first electromagnetic valve, the second electromagnetic valve and the air pump which are connected with the control circuit, and meanwhile, the pressure starting of the air pump is avoided, so that the requirements of different checking points are met.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the utility model, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the utility model and together with the description serve to explain the utility model and not to limit the utility model.
Fig. 1 is a schematic structural diagram of a fully-sealed pressure generating device according to one or more embodiments of the present invention;
FIG. 2 is a schematic diagram of an air path structure of a fully-sealed pressure generating device according to one or more embodiments of the utility model;
FIG. 3 is a schematic diagram of a control circuit for a hermetically sealed pressure generating device in accordance with one or more embodiments of the present invention;
FIG. 4 is a schematic diagram of a fully-sealed pressure generating device functional module provided by one or more embodiments of the utility model;
in the figure: 1. the air pressure control device comprises a shell, 2, a fully-sealed pressure air path, 3, an air pressurization air path, 4, a control circuit, 20, an air path outlet, 21, a pressure tank, 210, an air bag, 22, a pressure transmitter, 23, a first flow limiting valve, 31, a second flow limiting valve, 32, a first electromagnetic valve, 33, a one-way valve, 34, an air outlet, 35, a second electromagnetic valve, 30 and an air pump.
Detailed Description
The utility model is further described with reference to the following figures and examples.
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the utility model as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the utility model. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
Therefore, the following embodiments provide a portable full-sealed pressure generating device, which utilizes an air pump to pressurize a pressure air path, and makes the full-sealed pressure air path completely isolated from the outside through an air bag type pressure tank, thereby ensuring the sealing performance of the full-sealed pressure air path and realizing no leakage and no discharge of air.
The first embodiment is as follows:
as shown in fig. 1-4, the object of the present embodiment is to provide a portable fully-sealed pressure generating device, which includes a first current limiting valve 23 connected to the outlet end of a pressure tank 21 and a second current limiting valve 31 connected to the inlet end of the pressure tank 21, wherein the outlet of the first current limiting valve 23 is connected to a pressure transmitter 22 and an air path outlet 20 respectively; the inlet of the second flow limiting valve 31 is sequentially connected with a first electromagnetic valve 32, a one-way valve 33, a second electromagnetic valve 35 and an air pump 30;
the air outlet end of the pressure tank 21, the first flow limiting valve 23, the pressure transmitter 22 and the air path outlet 20 form a fully-sealed pressure air path 2;
the air pump 30, the second electromagnetic valve 35, the one-way valve 33, the first electromagnetic valve 32, the second flow limiting valve 31 and the air inlet end of the pressure tank 21 form an air pressurization air path 3;
the pressure tank 21 has an air bag 210 therein, and the air bag 210 isolates the hermetically sealed pressure gas circuit 2 from the external environment.
The inlet of the air pump 30 is connected to the external environment, and the outlet is connected to the inlet of the second solenoid valve 35.
The outlet of the second solenoid valve 35 is connected to the inlet of the check valve 33.
The outlet of the check valve 33 is connected to the inlet of the first solenoid valve 32.
The first electromagnetic valve 32 has two outlets, the first outlet is connected with the inlet of the second flow limiting valve 31, the second outlet is provided with an exhaust port 34, the air pump 30 is started under the exhaust non-pressure state, and the pressurized start of the air pump 30 is avoided.
In the process of calibrating the pressure gauge, the air bag 210 is filled with gas which is the same as that of the pressure gauge under the operating condition, the air path outlet 20 is connected with the pressure gauge to be calibrated, the air pump 30 is started to pressurize through the air pressurization air path 3, the generated pressure is transmitted to the air path outlet 20 through the full-sealed pressure air path 2 by using the pressure tank 21, and the calibration of the pressure gauge to be calibrated is realized.
In the checking process, the air bag type pressure tank 21 enables the fully-sealed pressure air path 2 to be completely isolated from the outside, and the sealing performance in the checking process is guaranteed.
During the verification process, the pressure of the air passage outlet 20 is transmitted to the microprocessor of the control circuit 4 through the pressure transmitter 22 connected with the control circuit 4 and displayed on the touch screen.
In the checking process, the pressure generated by the air pressurization air path 3 is controlled through the first electromagnetic valve 32, the second electromagnetic valve 35 and the air pump 30 which are connected with the control circuit 4, and the pressurized start of the air pump 30 is avoided.
The control circuit 4 comprises a display device, an output device and an interface which are respectively connected with the microprocessor, and the first electromagnetic valve 32, the second electromagnetic valve 35, the air pump 30 and the pressure transmitter 22 are respectively connected with the microprocessor.
In this embodiment, all parts of totally enclosed pressure generating device all place in the protective housing, and all parts adopt the lightweight design after, integrate as an organic whole with the protective housing, and the protective housing is from taking portable handle, conveniently carries.
In this embodiment, the special protective housing of portable instrument is adopted to totally enclosed pressure generating device's shell 1, and the antidetonation is prevented falling, is fit for the on-the-spot check-up.
In this embodiment, as shown in fig. 2, the air path of the fully-sealed pressure generating device uses the air bag type pressure tank 21 as a carrier, and the air path is divided into two independent portions, namely a fully-sealed pressure air path 2 and an air pressurizing air path 3.
In this embodiment, the fully-sealed pressure generating device adopts the air bag type pressure tank 21 to completely isolate the fully-sealed pressure air path 2 from the outside, thereby ensuring that the sealing performance of the fully-sealed pressure air path 2 and the checking process have no gas leakage and discharge.
In this embodiment, as shown in fig. 2, when the pressure generating device is used to perform pressure gauge calibration, the pressure change of the air pressurizing air path 3 is controlled, and the pressure is transmitted to the pressure air path 2 through the air bag 210 built in the pressure tank 21, so as to generate the pressure rising and falling processes required by the calibration process.
When the water pressure in the system slightly changes, the automatic expansion and contraction of the air bag of the traditional air bag type pressure tank can buffer the change of the water pressure to a certain extent, so that the stability of the water pressure of the system can be ensured, and the water pump can not be frequently opened due to the change of the pressure. Different from the traditional diaphragm pressure tank, the air bag pressure tank isolates a water chamber and an air chamber through an air bag in the tank body.
In this embodiment, the hydroecium and the air chamber of "gasbag formula overhead tank" correspond full-sealed pressure gas circuit 2 and air pressure boost gas circuit 3 respectively, and air pressure boost gas circuit utilizes external air pump pressure boost and three-way valve switching-over decompression, and the pressure of air pressure boost gas circuit 3 is transmitted to full-sealed pressure gas circuit 2 through the overhead tank gasbag to realize the required pressure of check-up full-sealed pressure gas circuit 2.
The characteristic that the inside and the outside of the air bag in the air bag type pressure tank are completely isolated is utilized, so that the purpose that the fully-sealed pressure air path 2 and the air pressurization air path 3 required in the embodiment are mutually independent is realized.
In this embodiment, when the pressure generating device is used to check the pressure gauge, the gas bag 210 disposed in the pressure tank 21 is filled with gas, such as CO and CH, that is the same as the gas filled in the pressure gauge under the operating condition4、SF6When the gas is used, namely the homogenous gas is used for verifying the pressure gauge, the reliability and the reliability of the verification result are improved.
In this embodiment, as shown in fig. 3, the control circuit 4 of the fully-sealed pressure generating device uses an embedded microprocessor as a core, and combines with peripheral control circuits, such as pressure pump control, solenoid valve control, LCD display, printer, and the like, to implement the overall functions of the device.
In this embodiment, the output device of the control circuit 4 may be one or more of a printer, a display, or any existing device, and the interface of the control circuit 4 may be a serial port for data transmission.
In this embodiment, as shown in fig. 3, an atmospheric pressure measurement module is built in the fully-sealed pressure generating device, and two calibration modes of absolute pressure and relative pressure can be automatically switched through software parameter setting.
In this embodiment, as shown in fig. 4, the fully-sealed pressure generating device supports pressure gauge calibration within a range of 0-1MPa, and different calibration points are set by software within a range of 0-1MPa to implement calibration of the pressure gauge.
In this embodiment, as shown in fig. 3, the fully-sealed pressure generating device supports connection between a serial port and a WIFI, and can be connected to an external PC through the serial port or the WIFI, and the device is controlled through PC software.
In this embodiment, as shown in fig. 3, the fully-sealed pressure generating device adopts a 10.1-inch oversized touch screen and a friendly interface design, so as to bring good experience to the instrument operation in the verification process.
The structure utilizes the air bag type pressure tank to divide the air path into the fully-sealed pressure air path 2 and the air pressurization air path 3 which are independent of each other on the basis of meeting the portability of the calibration process of the pressure gauge, so that the fully-sealed pressure air path 2 is completely isolated from the outside, and the sealing performance of the fully-sealed pressure air path 2 and the non-gas leakage and emission in the calibration process are ensured.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a portable totally enclosed pressure generating device which characterized in that: the gas pressure limiting device comprises a first flow limiting valve connected to the gas outlet end of a pressure tank and a second flow limiting valve connected to the gas inlet end of the pressure tank, wherein the outlet of the first flow limiting valve is respectively connected with a pressure transmitter and a gas circuit outlet; the inlet of the second flow limiting valve is sequentially connected with the first electromagnetic valve, the one-way valve, the second electromagnetic valve and the air pump;
the air outlet end of the pressure tank, the first flow limiting valve, the pressure transmitter and the air path outlet are connected through a pipeline to form a fully-sealed pressure air path;
the air pump, the second electromagnetic valve, the one-way valve, the first electromagnetic valve, the second flow limiting valve and the air inlet end of the pressure tank are connected through a pipeline to form an air pressurization air path;
the pressure tank is an air bag type pressure tank, an air bag is arranged in the pressure tank, and the air bag type pressure tank enables a fully-sealed pressure air path to be isolated from the external environment.
2. A portable hermetically sealed pressure generating device as claimed in claim 1, wherein: the fully-sealed pressure gas circuit and the air pressurization gas circuit are arranged in the shell, and the shell is internally provided with a control circuit.
3. A portable hermetically sealed pressure generating device as claimed in claim 2, wherein: the shell is provided with a handle and a panel, and the gas path outlet is connected to the panel.
4. A portable hermetically sealed pressure generating device as claimed in claim 2, wherein: the control circuit comprises a display device, an output device and an interface which are respectively connected with the microprocessor.
5. A portable hermetically sealed pressure generating device as claimed in claim 4, wherein: and the microprocessor is respectively connected with the first electromagnetic valve, the second electromagnetic valve, the air pump and the pressure transmitter.
6. A portable hermetically sealed pressure generating device as claimed in claim 1, wherein: the inlet of the air pump is communicated with the external environment.
7. A portable hermetically sealed pressure generating device as claimed in claim 6, wherein: and the outlet of the air pump is connected with the inlet of the second electromagnetic valve.
8. A portable hermetically sealed pressure generating device as claimed in claim 7, wherein: and the outlet of the second electromagnetic valve is connected with the inlet of the one-way valve.
9. A portable, hermetically sealed pressure generating device, as recited in claim 8, further comprising: and the outlet of the one-way valve is connected with the inlet of the first electromagnetic valve.
10. A portable hermetically sealed pressure generating device as claimed in claim 9, wherein: the first electromagnetic valve is provided with two outlets, the first outlet is connected with the inlet of the second flow limiting valve, and the second outlet is provided with an exhaust port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122518381.0U CN216050449U (en) | 2021-10-19 | 2021-10-19 | Portable full-sealed pressure generating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122518381.0U CN216050449U (en) | 2021-10-19 | 2021-10-19 | Portable full-sealed pressure generating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216050449U true CN216050449U (en) | 2022-03-15 |
Family
ID=80609813
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122518381.0U Active CN216050449U (en) | 2021-10-19 | 2021-10-19 | Portable full-sealed pressure generating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216050449U (en) |
-
2021
- 2021-10-19 CN CN202122518381.0U patent/CN216050449U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN216050449U (en) | Portable full-sealed pressure generating device | |
| CN111543969B (en) | Calibrating device of blood pressure measuring equipment | |
| CN110051342B (en) | Automatic detection device and method for electronic sphygmomanometer | |
| CN217586148U (en) | Liquid pressure calibrator | |
| CN113091974B (en) | Diaphragm chamber and system for shock wave measurement target quasi-static pressure calibration | |
| CN107328671A (en) | A kind of pilot system for being used to test the bellows fatigue life for bearing alternating pressure | |
| CN104006930A (en) | Leak detection test bed | |
| CN210644016U (en) | Automatic detection device of electronic sphygmomanometer | |
| CN211927604U (en) | Disassembly-free check and inflation-free sulfur hexafluoride low-pressure density controller | |
| CN111220325B (en) | Sine pressure generation method | |
| CN203858076U (en) | Air tightness testing device | |
| CN114018503A (en) | Air pressure air tightness test device | |
| CN109602408B (en) | Finger blood pressure simulator, control method and detection method | |
| CN203616068U (en) | Helium mass spectrometer leak detection testing apparatus for diaphragm capsule assembly of carrier rocket | |
| CN220490322U (en) | Sulfur hexafluoride gas leakage detection density calibrator | |
| CN203287154U (en) | Portable pressure gauge calibrator | |
| CN114354088B (en) | Inflatable leak detection sealing device and application method thereof | |
| CN205352630U (en) | Airtight and withstand voltage quick detection device of conformal transducer | |
| CN102353416B (en) | Synchronization pressure measurement-based cylinder cover volume detection device and method | |
| CN210154760U (en) | Connector air tightness test bed | |
| CN212650307U (en) | Constant pressure fumigating pesticide applying device | |
| CN219737110U (en) | Pressure-bearing flange hydrostatic test device | |
| CN220018836U (en) | Spherical graphite production line seals inspection device | |
| CN210426899U (en) | Mass spectrum leak detection equipment | |
| CN204924808U (en) | Intensity appearance is burst in electronics pneumatics |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |