CN209746387U - Air pressure acquisition control device for controlling free switching of multiple air channels - Google Patents
Air pressure acquisition control device for controlling free switching of multiple air channels Download PDFInfo
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- CN209746387U CN209746387U CN201920562185.3U CN201920562185U CN209746387U CN 209746387 U CN209746387 U CN 209746387U CN 201920562185 U CN201920562185 U CN 201920562185U CN 209746387 U CN209746387 U CN 209746387U
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Abstract
The utility model discloses an atmospheric pressure acquisition control device of control many gas circuits free switching, including the device body including a plurality of parallelly connected gas circuits, all be provided with the on-off control valve on every gas circuit, the gas circuit entry linkage sampling interface of every gas circuit, the gas circuit export of every gas circuit meets with communicating pipe, the pressure measurement mouth that is located on the device body is connected to one end of communicating pipe, install pressure sensor on the pressure measurement mouth, still be provided with the wiring port on the device body, the wiring port is connected with the on-off control valve electricity; the utility model discloses simplify multichannel atmospheric pressure collection system's mechanism greatly, can carry out the measurement of the atmospheric pressure value of large-scale sampling point in limited pipeline space, practiced thrift hardware resources, practiced thrift the space that equipment fixing arranged, reduced the volume and the weight of device, reduced manufacturing cost. The gas pressure measuring device is easy to disassemble, assemble and maintain, is suitable for measuring gas pressure in high-pressure, normal-pressure and negative-pressure environments, is suitable for measuring gas pressure in various environments, and is wide in application field.
Description
Technical Field
The invention belongs to the technical field of pressure acquisition, and particularly relates to an air pressure acquisition control device for controlling free switching of multiple air channels.
Background
In order to achieve ideal experimental requirements and production processes in the fields of aerospace, environmental monitoring, military, automobile manufacturing and the like, various parameters need to be accurately controlled in real time, and the control parameters mainly comprise temperature, air pressure, flow and the like. Most of the existing methods for single-point wired monitoring by using a large number of pressure sensors and instruments are used for indicating various indexes of substances in pipelines. The air pressure acquisition device can convert the air pressure signal of the detected air into an analog signal so as to facilitate the further analysis and processing of the air pressure signal by the working personnel. The air pressure acquisition device used for multi-channel air pressure measurement in the prior art generally comprises a plurality of independent air pressure measurement assemblies, each measurement assembly comprises an independent air pressure sensor, the single-point wired monitoring can lead the wiring of the whole control monitoring system to be very complicated, each measurement assembly respectively and independently operates, the high-efficiency and accurate purpose cannot be met, and once the system is in trouble of fault maintenance, the system work is influenced. The multichannel air pressure acquisition device used in the prior art has the following defects that on one hand, the acquisition device adopts single-point wired monitoring, when a pipeline with limited length needs to be subjected to large-scale acquisition points, the number of the acquisition points exceeds 100, and reaches hundreds or even thousands, a large number of air pressure acquisition devices cannot be arranged and installed in a limited space, so that the air pressure in the pipeline cannot be subjected to large-scale air pressure acquisition and measurement; on the other hand, single-point wired monitoring needs to adopt a large number of sensors in the air pressure acquisition engineering applied to a large scale of multiple air paths, so that the system cost is greatly increased, and the installation and arrangement of the sensors needs to occupy a large space, and the system is large in size, multiple in devices, complex in route, heavy in weight and high in manufacturing cost.
Disclosure of Invention
the invention provides an air pressure acquisition control device for controlling free switching of multiple air channels, which aims to solve the problems in the prior art.
In order to achieve the purpose, the invention adopts the technical scheme that:
the utility model provides a control many gas circuits freely switch's atmospheric pressure collection control device, includes that device body 4 includes the parallelly connected gas circuit 18 of a plurality of, all is provided with on every gas circuit 18 and opens and close control valve 8, and the gas circuit entry linkage sampling interface 11 of every gas circuit 18, the gas circuit export of every gas circuit 18 meets with communicating pipe 15, and the pressure measurement mouth 7 that is located on device body 4 is connected to the one end of communicating pipe 15, install baroceptor 5 on the pressure measurement mouth 7, still be provided with wiring port 10 on the device body 4, wiring port 10 is connected with opening and closing control valve 8 electricity.
Further, the connection port 10 includes 14 paths of 24V + terminals 14 and 2 paths of GND terminals 12, the 14 paths of 24V + terminals 14 are respectively and correspondingly connected to the switch control valve 8 on the 14 paths of air paths 18, and the air paths 18 corresponding to on-off control of the switch control valve 8 are communicated and closed with the pressure measuring port 7.
Further, adjacent air passages 18 are separated by the bus plate 9.
Further, an air filter element 16 is disposed in the sampling interface 11.
Furthermore, one end of the sampling interface 11 is connected to an air path inlet of the air path 18 through a screw thread, and the other end of the sampling interface 11 is connected to one end of the air path joint 17 through a screw thread.
further, the other end of the air path joint 17 is a pagoda-shaped interface.
Further, a sealing nut 19 is further mounted on the thread between the sampling interface 11 and the air path joint 17.
Further, the gas path outlet of the gas path 18 is in threaded sealing connection with the communicating pipe 13.
Further, the air passage 18 is hermetically connected with the on-off control valve 8.
Further, the device body 4 is provided with a plurality of bodies.
compared with the prior art, the invention has the following beneficial effects:
The invention greatly simplifies the mechanism of the multi-channel air pressure acquisition device, can measure the air pressure value of a large-scale sampling point in a limited pipeline space, saves hardware resources, saves the space for installing and arranging equipment, reduces the volume and the weight of the device and reduces the manufacturing cost. The gas pressure measuring device is easy to disassemble, assemble and maintain, is suitable for measuring gas pressure in high-pressure, normal-pressure and negative-pressure environments, is suitable for measuring gas pressure in various environments, and is wide in application field. The measuring range and the measuring precision of the invention can be met by replacing air pressure sensors with different specifications according to requirements, and the invention is convenient and efficient and does not need welding elements.
Drawings
FIG. 1 is an overall block diagram of the present invention;
FIG. 2 is a schematic view of the structure of the device body;
FIG. 3 is a schematic diagram of the electrical wiring of the device body;
FIG. 4 is a schematic view of the connection of the device body;
Wherein: the device comprises a computer 1, a USB deconcentrator 2, a PLC CPU module 3, a device body 4, an air pressure sensor 5, a PLC analog input module 6, a pressure measuring port 7, an on-off control valve 8, a bus board 9, a wiring port 10, a sampling port 11, a GND port 12, an I/O port 13, a wiring port 14-24V +, a communicating pipe 15, an air filter 16, an air path connector 17, an air path 18 and a sealing nut 19.
Detailed Description
The present invention will be further described with reference to the following examples.
As shown in fig. 2-4, an air pressure collecting and controlling device for controlling free switching of multiple air paths includes a device body 4 including a plurality of air paths 18 connected in parallel, each air path 18 is provided with an on-off control valve 8, an air path inlet of each air path 18 is connected with a sampling interface 11, an air path outlet of each air path 18 is connected with a communicating pipe 15, one end of the communicating pipe 15 is connected with a pressure measuring port 7 located on the device body 4, an air pressure sensor 5 is installed on the pressure measuring port 7, the device body 4 is further provided with a wiring port 10, and the wiring port 10 is electrically connected with the on-off control valve 8. The device bodies 4 are provided in number.
Specifically, the connection port 10 includes 14 paths of 24V + terminals 14 and 2 paths of GND terminals 12, the 14 paths of 24V + terminals 14 are respectively and correspondingly connected with the switch control valve 8 on the 14 paths of air paths 18, and the air paths 18 corresponding to on-off control of the switch control valve 8 are communicated and closed with the pressure measuring port 7. Adjacent air passages 18 are separated by the bus plate 9. An air filter element 16 is arranged in the sampling interface 11.
The one end of sampling interface 11 passes through the gas circuit entry of threaded connection gas circuit 18, and the other end of sampling interface 11 passes through the one end of threaded connection gas circuit joint 17, the other end of gas circuit joint 17 is pagoda-shaped interface, still install gland nut 19 on the screw thread between sampling interface 11 and the gas circuit joint 17, the gas circuit export of gas circuit 18 and the threaded seal connection between communicating pipe 13, sealing connection between gas circuit 18 and the on-off control valve 8.
as shown in fig. 1, an air pressure acquisition control system for controlling the free switching of multiple air channels,
The device comprises a computer 1, a USB deconcentrator 2, PLC CPU modules 3, a device body 4 and a PLC analog input module 6, wherein the computer 1 is connected with a plurality of PLC CPU modules 3 through the USB deconcentrator 2, each PLC CPU module 3 is connected with one device body 4, a pressure measuring port 7 of each device body 4 is provided with an air pressure sensor 5, the plurality of air pressure sensors 5 are connected with the PLC analog input module 6, and the PLC analog input module 6 is connected with any one of the plurality of PLC CPU modules 3; the device body 4 comprises a plurality of gas circuits 18 connected in parallel, each gas circuit 18 is provided with a switch control valve 8, a gas circuit inlet of each gas circuit 18 is connected with a sampling interface 11, a gas circuit outlet of each gas circuit 18 is connected with a communicating pipe 15, one end of the communicating pipe 15 is connected with a pressure measuring port 7 positioned on the device body 4, and the computer 1 is used for storing and displaying data.
A wiring port 10 is arranged on the device body 4, the wiring port 10 comprises 14 paths of 24V + wiring ends 14 and 2 paths of GND wiring ends 12, the 14 paths of 24V + wiring ends 14 are respectively and correspondingly connected with a switch control valve 8 on a 14 path of air path 18, the 14 paths of 24V + wiring ends 14 are correspondingly connected with 14 paths of I/O ports 13 arranged on the PLC CPU module 3, the PLC CPU module 3 controls 24V voltage output of the 14 paths of I/O ports 13 so as to control the on-off of the expected corresponding switch control valve 8, finally controls the communication and the off of the corresponding air path 18 and a pressure measuring port 7, the 2 paths of GND wiring ends 12 are connected with GND on the PLC CPU module 3, one PLC CPU module 3 and one device body 4 are a subsystem, and one subsystem collects 14 air pressure values; each PLC analog input module 6 is provided with 32 acquisition channels, the 32 acquisition channels correspondingly acquire pressure signals of 32 pressure sensors 5 connected with pressure measuring ports 7 on the 32-set device body 4, each device body 4 comprises 14 air paths 18 connected in parallel, and each PLC analog input module 6 can acquire 32 × 14 air pressure sampling signals at most; the USB deconcentrator 2 is provided with a plurality of wiring ports, the N-path wiring ports are connected with and correspond to the PLC CPU modules 3 through USB-PPI data lines, the computer is connected with the PLC CPU modules 3 through the USB deconcentrator 2, and air pressure signals of the plurality of pressure sensors 5 collected by the PLC analog input module 6 connected with the PLC CPU modules 3 are read through any one of the PLC CPU modules 3.
An air filter element 16 is arranged in the sampling interface 11; one end of the sampling interface 11 is connected with a gas path inlet of a gas path 18 through threads, the other end of the sampling interface 11 is connected with one end of a gas path joint 17 through threads, the other end of the gas path joint 17 is a pagoda-shaped interface, and a sealing nut 19 is further mounted on the threads between the sampling interface 11 and the gas path joint 17; the pagoda-shaped interface of the air path joint 17 can change the style and the size according to different requirements; the gas path outlet of the gas path 18 is in threaded sealing connection with the communicating pipe 13, and the gas path 18 is in sealing connection with the on-off control valve 8.
Adjacent air passages 18 are separated by a bus board 9, a protective cover plate is additionally arranged outside the device body 4, and the device body is made of aluminum alloy materials so as to reduce the weight of the whole device. The electric connection between each module can adopt flexible module connection, further reducing the volume of the device.
Preferably, the type of the USB splitter 2 is a USB splitter of the green alliance, the type of the PLC CPU module 3 is siemens S-200CN CPU224XP CN, and the type of the PLC analog input module is siemens S-200CN EM 231.
a test method for controlling a multi-gas-path free switching air pressure acquisition control system is characterized in that when air pressure is measured, a PLC CPU module 3 controls on and off of a corresponding switch control valve 8, gas of an air pressure source to be measured enters a corresponding gas path 18 from a sampling interface 11, a pressure sensor 5 of a pressure measuring port 7 measures pressure and transmits the pressure to a PLC analog input module 6, the PLC analog input module 6 transmits acquired air pressure signals to the PLC CPU module 3, the PLC CPU module 3 transmits the air pressure signals to a computer 1 through a USB deconcentrator 2, and the computer 1 stores and displays air pressure data.
The invention greatly simplifies the mechanism of the single-point wired monitoring multi-channel air pressure acquisition device, integrates the modes of a multi-channel single-point air channel interface, an air pressure sensor and a signal acquisition board into the modes of a multi-channel air channel acquisition interface, a multi-channel air channel switch control valve, a single air channel outlet and an air pressure sensor, controls the on-off of the corresponding air channel acquisition channel and the single air channel outlet, controls the working state of the air channel switch valve through the controller module, and can achieve the purpose of freely switching the air channel acquisition. 1 PLC CPU module corresponds 1 device body that has 14 sampling interfaces, N PLC CPU module can constitute the extensive atmospheric pressure collection subsystem that can gather the atmospheric pressure value of Nx14 sampling points, N subsystem can be controlled to N way USB deconcentrator rethread, thereby can set up the extensive atmospheric pressure collection system who gathers the atmospheric pressure value of 14N sampling points by 1 computer, multichannel atmospheric pressure collection device's mechanism has greatly been simplified, can carry out the measurement of the atmospheric pressure value of extensive sampling point in limited pipe space, hardware resources have been practiced thrift, the space of equipment fixing arrangement has been practiced thrift, the volume and the weight of device have been reduced, manufacturing cost is reduced. The gas pressure sensor is easy to disassemble, assemble and maintain, is suitable for gas pressure measurement in high-pressure, normal-pressure and negative-pressure environments, and is wide in application field. Hardware resources are saved, the size, the weight and the manufacturing cost of the device are reduced, the device is convenient to disassemble and maintain, and the device is suitable for gas pressure measurement in various environments.
The measuring range and the measuring precision of the multi-channel air pressure acquisition device provided by the invention can meet different use requirements by replacing air pressure sensors with different specifications according to requirements, and the multi-channel air pressure acquisition device is convenient, fast and efficient and does not need welding elements.
The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the invention and these are intended to be within the scope of the invention.
Claims (10)
1. The utility model provides a control many gas circuits freely switch's atmospheric pressure collection control device, its characterized in that includes that device body (4) include gas circuit (18) that a plurality of is parallelly connected, all is provided with on every gas circuit (18) on switch control valve (8), the gas circuit entry linkage sampling interface (11) of every gas circuit (18), the gas circuit export of every gas circuit (18) meets with communicating pipe (15), pressure measurement mouth (7) that the one end of communicating pipe (15) is connected and is located device body (4), install baroceptor (5) on pressure measurement mouth (7), still be provided with wiring port (10) on device body (4), wiring port (10) are connected with switch control valve (8) electricity.
2. The air pressure acquisition control device for controlling the free switching of the multiple air channels according to claim 1, characterized in that: the wiring port (10) comprises 14 paths of 24V + wiring ends (14) and 2 paths of GND wiring ends (12), the 14 paths of 24V + wiring ends (14) are respectively and correspondingly connected with the switch control valve (8) on the 14 paths of air paths (18), and the air paths (18) corresponding to the on-off control of the switch control valve (8) are communicated and closed with the pressure measuring port (7).
3. The air pressure acquisition control device for controlling the free switching of the multiple air channels according to claim 1, characterized in that: the adjacent air passages (18) are separated by a confluence plate (9).
4. The air pressure acquisition control device for controlling the free switching of the multiple air channels according to claim 1, characterized in that: an air filter element (16) is arranged in the sampling interface (11).
5. The air pressure acquisition control device for controlling the free switching of the multiple air channels according to claim 1, characterized in that: one end of the sampling interface (11) is connected with the gas path inlet of the gas path (18) through threads, and the other end of the sampling interface (11) is connected with one end of the gas path joint (17) through threads.
6. The air pressure acquisition control device for controlling the free switching of the multiple air channels according to claim 5, characterized in that: the other end of the air path joint (17) is a pagoda-shaped interface.
7. The air pressure acquisition control device for controlling the free switching of the multiple air channels according to claim 5, characterized in that: and a sealing nut (19) is further mounted on the thread between the sampling interface (11) and the air path joint (17).
8. The air pressure acquisition control device for controlling the free switching of the multiple air channels according to claim 5, characterized in that: and the gas path outlet of the gas path (18) is in threaded sealing connection with the communicating pipe (13).
9. The air pressure acquisition control device for controlling the free switching of the multiple air channels according to claim 5, characterized in that: the air passage (18) is hermetically connected with the switch control valve (8).
10. The air pressure acquisition control device for controlling the free switching of the multiple air channels according to claim 1, characterized in that: the device bodies (4) are provided with a plurality of parts.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920562185.3U CN209746387U (en) | 2019-04-24 | 2019-04-24 | Air pressure acquisition control device for controlling free switching of multiple air channels |
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| CN201920562185.3U CN209746387U (en) | 2019-04-24 | 2019-04-24 | Air pressure acquisition control device for controlling free switching of multiple air channels |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110161899A (en) * | 2019-04-24 | 2019-08-23 | 南京航空航天大学 | A kind of air pressure acquisition control device controlling more gas circuit free switchings |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110161899A (en) * | 2019-04-24 | 2019-08-23 | 南京航空航天大学 | A kind of air pressure acquisition control device controlling more gas circuit free switchings |
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