CN116327275A - Gas delivery system and data processing method thereof - Google Patents
Gas delivery system and data processing method thereof Download PDFInfo
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- CN116327275A CN116327275A CN202310328708.9A CN202310328708A CN116327275A CN 116327275 A CN116327275 A CN 116327275A CN 202310328708 A CN202310328708 A CN 202310328708A CN 116327275 A CN116327275 A CN 116327275A
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- 238000003672 processing method Methods 0.000 title abstract description 8
- 238000001514 detection method Methods 0.000 claims abstract description 83
- 208000005646 Pneumoperitoneum Diseases 0.000 claims abstract description 39
- 238000000034 method Methods 0.000 claims abstract description 33
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- 238000001354 calcination Methods 0.000 claims description 4
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/02—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors
- A61B17/0281—Abdominal wall lifters
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M31/00—Devices for introducing or retaining media, e.g. remedies, in cavities of the body
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/22—Valves or arrangement of valves
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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Abstract
The invention discloses a gas conveying system and a data processing method thereof, wherein the gas conveying system comprises a gas path system, a display device and a control device; the gas circuit system forms gas circuit pipeline and pneumoperitoneum pipeline, and the gas circuit system includes: the first switch valve, the discharge switch valve and the air resistance device are arranged in the air passage pipeline, the first differential pressure sensor is provided with a first detection part and a second detection part, the first detection part is connected between the first switch valve and the air resistance device, the second detection part is connected at one side pipeline of the air resistance device, which is far away from the discharge switch valve, and the flow detection unit is arranged at the output end of the pneumoperitoneum pipeline; the control device processes the sensing data of the first differential pressure sensor and the flow detection unit and displays the sensing data by the display device. According to the invention, the theoretical flow value measured by the first differential pressure sensor is corrected through the actual flow value measured by the flow detection unit, so that a more accurate display flow value is obtained, and the flow change of the gas conveying system in the forward gas supply or reverse gas release process can be accurately acquired by a user.
Description
Technical Field
The invention relates to the technical field of medical equipment, in particular to a gas conveying system and a data processing method thereof.
Background
The gas delivery system is used for maintaining pressure balance in the human body cavity:
when the pressure in the cavity does not reach the preset pressure, the gas conveying system conveys gas into the cavity of the human body, the pressure in the cavity of the human body is increased, and the gas conveying system stops gas feeding after the pressure in the cavity of the human body reaches dynamic balance.
When the human body cavity is disturbed by the outside, the actual pressure in the human body may be increased, the dynamic balance is broken, at the moment, the gas delivery system opens the gas release valve in the equipment, starts the gas release function, reduces the pressure in the cavity until the actual pressure in the human body cavity reaches the preset pressure again, and establishes a new dynamic balance state.
The conventional gas conveying system generally adopts a common flowmeter, and the common flowmeter can only measure unidirectional flow, can only detect the flow in the forward gas conveying process of the gas conveying system, but cannot exert the flow detection function when the gas conveying system is in reverse gas leakage, so that the use is inconvenient.
Disclosure of Invention
The invention mainly aims to provide a gas circuit system capable of accurately sensing flow changes in the forward gas supply and reverse gas release processes.
In order to achieve the above purpose, the present invention provides a gas conveying system, which includes a gas path system, a flow detection unit, a display device and a control device;
the gas circuit system is provided with a gas circuit pipeline and a pneumoperitoneum pipeline which are sequentially connected, the gas circuit system comprises a first switch valve, a release switch valve, a gas resistance device and a first pressure difference sensor which are sequentially arranged on the gas circuit pipeline at intervals, the first pressure difference sensor is provided with a first detection part and a second detection part, the first detection part is connected between the first switch valve and the gas resistance device, and the second detection part is connected at a pipeline of one side of the gas resistance device, which is far away from the release switch valve;
the flow detection unit is arranged at the output end of the pneumoperitoneum pipeline;
the control device is electrically connected with the air path system and the display device respectively, so as to process the sensing data of the first differential pressure sensor and the flow detection unit and display the sensing data by the display device.
Optionally, the control device includes a program compiling module and a storage module, the program compiling module is configured to compile a correction relation between the theoretical flow value obtained by sensing the first differential pressure sensor and the actual flow value obtained by sensing the flow detection unit, and the storage module is configured to store the correction relation.
Optionally, the gas delivery system further includes a power supply device, where the power supply device is electrically connected to an external power source, and the power supply device is configured to provide power for the gas path system, the display device, and the control device.
Optionally, the gas circuit system further includes:
the pressure sensor, the at least one first pressure regulating valve and the high-pressure safety valve are sequentially arranged at the upstream of the first switch valve along the air supply direction; and/or the number of the groups of groups,
the device comprises a second switch valve, a low-pressure safety valve, a second differential pressure sensor and a third differential pressure sensor, wherein the second switch valve and the low-pressure safety valve are sequentially arranged on one side, far away from the bleeder switch valve, of the air resistance device, one detection end of the second differential pressure sensor is connected between the air resistance device and the second switch valve, the other detection end of the second differential pressure sensor is communicated with the atmosphere, one detection end of the third differential pressure sensor is connected between the second switch valve and the low-pressure safety valve, and the other detection end of the third differential pressure sensor is communicated with the atmosphere.
Optionally, the gas circuit pipeline is used for accessing an external central gas source; and/or the number of the groups of groups,
the gas circuit system further comprises a gas storage steel bottle and a second pressure regulating valve, and the second pressure regulating valve is connected between the gas storage steel bottle and the gas circuit pipeline.
Optionally, the gas circuit system further includes:
the filter is arranged on the pneumoperitoneum pipeline and used for filtering the gas entering the pneumoperitoneum pipeline through the gas circuit pipeline; and/or the number of the groups of groups,
and the heating device is arranged on the pneumoperitoneum pipeline so as to heat the gas entering the pneumoperitoneum pipeline through the gas circuit pipeline.
Optionally, the air-blocking device comprises a shell and a metal filter element arranged in the shell, wherein the metal filter element is in a cylindrical shape, and the inner cavity of the shell is divided into a first cavity positioned in the cylinder and a second cavity positioned outside the cylinder:
the shell is provided with a first air conveying flow channel and a second air conveying flow channel, one end of the first air conveying flow channel is respectively communicated with the first switch valve and the discharge switch valve, the other end of the first air conveying flow channel is communicated with the first cavity, one end of the second air conveying flow channel is communicated with the second cavity, and the other end of the second air conveying flow channel is communicated with the pneumoperitoneum pipeline;
the first detection part is connected with the first chamber, and the second detection part is connected with the second chamber;
the metal filter element is made of metal powder through calcination, and gaps among the metal powder form filter holes of the metal filter element.
In addition, to achieve the above object, the present invention also provides a data processing method of the gas delivery system as described above, including:
acquiring a set pressure value, and acquiring a plurality of set flow values to be regulated according to the set pressure value;
the control gas circuit system operates according to each set flow value;
when the gas circuit system runs each set flow value, acquiring a theoretical flow value obtained based on the sensing of a first differential pressure sensor and an actual flow value obtained based on the sensing of a flow detection unit;
and fitting according to each set flow value, the theoretical flow value and the actual flow value to obtain a correction relation between the theoretical flow value and the actual flow value.
Optionally, the step of fitting to obtain a correction relation between the theoretical flow value and the actual flow value according to each of the set flow value, the theoretical flow value and the actual flow value includes:
sorting all the set flow values according to a set rule;
drawing a first curve by taking the theoretical flow value as a horizontal axis and the actual flow value as a vertical axis corresponding to the sequenced set flow value;
and determining the number of the partitions of the first curve and the function types corresponding to the partitions, performing function fitting on the first curve to obtain a fitting curve, and obtaining a correction relation between a theoretical flow value and an actual flow value according to the fitting curve.
Optionally, after the step of fitting to obtain a correction relation between the theoretical flow value and the actual flow value according to each of the set flow value, the theoretical flow value and the actual flow value, the method further includes:
storing the correction relation;
when the operation of the gas conveying system is sensed, the actual flow is corrected by using the sensing data obtained by the real-time sensing of the first differential pressure sensor according to the correction relation, and the actual flow is displayed on a display device.
In the technical scheme provided by the invention, when forward air supply is carried out, the first switch valve is opened, the release switch valve is closed, and air flows from the air circuit pipeline to the pneumoperitoneum pipeline, at the moment, the first pressure difference sensor detects and obtains first air pressure when air flows between the first switch valve and the air resistance device, and detects and obtains second air pressure after the air is discharged from the air resistance device, and the theoretical flow value of the air circuit system in the forward air supply process can be determined according to the pressure difference between the first air pressure and the second air pressure; when reverse air leakage is carried out, the first switch valve is closed, the release switch valve is opened, air flows from the pneumoperitoneum pipeline to the air circuit pipeline, at the moment, the first pressure difference sensor detects and obtains third air pressure when air flows through the air resistance device, detects and obtains fourth air pressure when air flows through between the release switch valve and the air resistance device, and according to the pressure difference between the third air pressure and the fourth air pressure, the theoretical flow value of the air circuit system in the reverse air leakage process can be determined, and the bidirectional detection of real-time flow is realized. When the theoretical flow value and the actual flow value obtained based on the sensing of the flow detection unit are received, the control device corrects the theoretical flow value through the actual flow value, so that a more accurate display flow value is obtained, and the display flow value is sent to the display device, so that the display flow value is visualized, the flow change condition of the gas conveying system in the forward gas supply or reverse gas release process can be accurately obtained by a user, and the system has more practicability and reliability.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the hardware connections of a gas delivery system provided by the present invention;
FIG. 2 is a schematic diagram illustrating the connection of an embodiment of the gas circuit system according to the present invention;
FIG. 3 is a schematic diagram showing the connection of the air path pipeline part in FIG. 1;
FIG. 4 is a schematic illustration of the connection of the pneumoperitoneum line portion of FIG. 1;
FIG. 5 is a schematic diagram of a first embodiment of an air-lock device according to the present invention at a first viewing angle;
FIG. 6 is a perspective view of the air lock device of FIG. 5 at a second view angle;
FIG. 7 is an exploded view of the air-lock device of FIG. 1;
FIG. 8 is a schematic view of the air-lock device of FIG. 1 in longitudinal section;
fig. 9 is a schematic perspective view of a second embodiment of an air-lock device according to the present invention;
FIG. 10 is a schematic view of the air-lock device of FIG. 9 in longitudinal section;
FIG. 11 is a flow chart of an embodiment of a data processing method of a gas delivery system according to the present invention;
FIG. 12 is a graph of actual flow value versus theoretical flow value for theoretical flow values of 0-30mmHg provided by the present invention;
FIG. 13 is a graph of actual flow value versus theoretical flow value for theoretical flow values of 25-44mmHg provided by the present invention.
Reference numerals illustrate:
1, an air path system; 100 air circuit pipelines; 110 pressure sensors; 120 a first pressure regulating valve; 130 high pressure relief valve; 140 a first switching valve; 150 a bleed off switch valve; 160 air resistance devices; 161a housing; 161a bottom case; 161b cover; 161c first chamber; 161d second chamber; 161e first gas delivery flow path; 161f second gas delivery flow path; 161g bleed flow path; 161h of a first detection port; 161i second detection port; 162 metal filter element; 163a first seal; 163b a second seal; 163c a third seal; 171 a first differential pressure sensor; 172 a second differential pressure sensor; 173 a third differential pressure sensor; a second switch valve 180; 190 low pressure switch valve; 200 pneumoperitoneum lines; 210 a filter; 220 heating means; 310 gas storage steel cylinders; 320 a second pressure regulating valve; 411 first connectors; 412 a second pair of joints; 420 a second joint; 431 a third connector; 432 a third pair of joints; 441 fourth connector; 442 fourth pair of joints; 5 a flow detection unit; 6 a display device; 7 a control device; 8 power supply devices.
The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present invention, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" as it appears throughout includes three parallel schemes, for example "A and/or B", including the A scheme, or the B scheme, or the scheme where A and B are satisfied simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.
Referring to fig. 1 to 4, the gas conveying system provided by the present invention includes a gas path system 1, a flow detection unit 5, a display device 6 and a control device 7; the air path system 1 is formed with an air path pipeline 100 and an air-belly pipeline 200 which are sequentially connected, the air path system 1 comprises a first switch valve 140, a release switch valve 150, an air resistance device 160 and a first differential pressure sensor 171 which are sequentially arranged on the air path pipeline 100 at intervals, the first differential pressure sensor 171 is provided with a first detection part and a second detection part, the first detection part is connected between the first switch valve 140 and the air resistance device 160, and the second detection part is connected at a pipeline of one side of the air resistance device 160 far away from the release switch valve 150; the flow detection unit 5 is arranged at the output end of the pneumoperitoneum pipeline 200; the control device 7 is electrically connected to the air path system 1 and the display device 6, respectively, so as to process the sensing data of the first differential pressure sensor 171 and the flow detection unit 5, and provide the sensing data for the display device 6 to display.
In the technical scheme provided by the invention, when forward air supply is performed, the first switch valve 140 is opened and the release switch valve 150 is closed, and air flows from the air path pipeline 100 to the pneumoperitoneum pipeline 200, at this time, the first pressure difference sensor 171 detects and obtains a first air pressure when air flows between the first switch valve 140 and the air resistance device 160, detects and obtains a second air pressure after the air is discharged from the air resistance device 160, and can determine the real-time flow value of the air path system 1 in the forward air supply process according to the pressure difference between the first air pressure and the second air pressure; when the reverse air leakage is performed, the first switch valve 140 is closed and the release switch valve 150 is opened, the air flows from the pneumoperitoneum pipeline 200 to the air circuit pipeline 100, at this time, the first differential pressure sensor 171 detects and obtains the third air pressure when the air flows through the air resistance device 160, detects and obtains the fourth air pressure when the air flows between the release switch valve 150 and the air resistance device 160, and according to the pressure difference between the third air pressure and the fourth air pressure, the real-time flow value of the air circuit system 1 in the reverse air leakage process can be determined, so that the bidirectional detection of the real-time flow is realized. When the control device 7 receives the real-time flow value and the actual flow value obtained based on the sensing of the flow detection unit 5, the real-time flow value is corrected through the actual flow value, so that a more accurate display flow value is obtained, and the display flow value is sent to the display device 6, so that the display flow value is visualized, the flow change condition of the gas conveying system in the forward gas supply or reverse gas release process can be accurately obtained by a user, and the practicability and the reliability are improved.
First, regarding the gas path system 1:
in this design, the gas circuit pipeline 100 is divided into a gas supply section and a transition section by the first switch valve 140, the first switch valve 140 is disposed at the downstream of the gas supply section, the upstream of the transition section is connected with the downstream of the gas supply section through a pipeline structure, and the downstream of the transition section is connected with the pneumoperitoneum pipeline 200 through a pipeline structure.
Specifically, referring to fig. 3, in an embodiment, the gas circuit system further includes a pressure sensor 110, at least one first pressure regulating valve 120, and a high pressure relief valve 130, which are sequentially disposed upstream of the first switch valve 140, i.e., on the gas supply section, in the gas supply direction.
After the external air source enters the air supply section, the pressure sensor 110 can sense and obtain the pressure change condition at the upstream of the air supply section, and when the pressure is normal, the subsequent first pressure regulating valve 120, the high-pressure safety valve 130, the first switch valve 140 and the like normally operate; on the contrary, when the discharge pressure is abnormal, the supply amount of the external air source may be adjusted correspondingly, or the subsequent first pressure regulating valve 120, high pressure relief valve 130, first switching valve 140, etc. may be adjusted to close or the opening of the valve port may be increased or decreased according to the actual abnormal situation.
The first pressure regulating valve 120 may specifically be a pressure reducing valve or a pressure increasing valve, and the first pressure regulating valve 120 may be one or at least two, where when the first pressure regulating valve 120 is at least two, the two first pressure regulating valves 120 may be pressure reducing valves, so as to gradually reduce pressure of the air flow passing through, and avoid any failure of the first pressure regulating valves 120 to generate a larger adverse effect on the air circuit 100.
The high-pressure safety valve 130 can conduct or cut off the air flow at the position, and because the air supply section is connected with an external air source, a high-pressure air flow is formed, the high-pressure safety valve 130 can adapt to the high-pressure environment, and the high-pressure safety valve 130 is used as a protection structure of the air supply section, thereby being beneficial to improving the operation quality of the air supply section.
The design is then not limited in the type of external air source, which in one embodiment may be an external central air source, upstream of which the air supply section is adapted to directly access.
And/or, in an embodiment, the gas circuit system further comprises a gas storage steel cylinder 310 and a second pressure regulating valve 320, and the second pressure regulating valve 320 is connected between the gas storage steel cylinder 310 and the gas circuit pipeline 100. Since the gas is compressed and stored in the gas storage cylinder 310, a high gas pressure is formed in the gas storage cylinder 310, and thus the second pressure regulating valve 320 may be a pressure reducing valve as well, to regulate the gas pressure of the gas flow outputted through the gas storage cylinder 310.
The external air source is a central air source or the air storage steel bottle 310, and is connected with the upstream of the air supply section through a high-pressure pipeline, and the external air source and the upstream of the air supply section can be detached through a first connector 411 and a second connector 412 which are detachably connected. Wherein, first connector 411 connects in the mouth of pipe department of high-pressure pipeline, and first butt joint connects in the upstream mouth of pipe department of air feed section, and pressure sensor 110 and first butt joint interval set up.
Referring to fig. 5 to 8, the air-blocking device 160 provided by the present invention includes a housing 161 and a metal filter element 162, wherein an air cavity is formed in the housing 161; the metal filter element 162 is arranged in the air cavity and divides the air cavity into a first cavity 161c and a second cavity 161d, and the first cavity 161c and the second cavity 161d are communicated through the filter holes of the metal filter element 162; the casing 161 is provided with a first gas delivery channel 161e and a first detection port 161h which are communicated with the first chamber 161c, and a second gas delivery channel 161f and a second detection port 161i which are communicated with the second chamber 161d, wherein the first gas delivery channel 161e or the second gas delivery channel 161f is used for accessing gas, and the first detection port 161h and the second detection port 161i are used for connecting with a first differential pressure sensor 171.
In the invention, the filtering holes of the metal filter element 162 are communicated between the first chamber 161c and the second chamber 161d, so that the air flow gathered between the first chamber 161c and the second chamber 161d can be uniformly dispersed, the flow speed of the air flow is soft and stable, and the follow-up flow detection is facilitated; whether the forward air supply process or the reverse air discharge process is performed, the first differential pressure sensor 171 can detect the air pressure of the first chamber 161c through the first detection port 161h and detect the air pressure of the second chamber 161d through the second detection port 161i, so that the first differential pressure sensor 171 does not need to be additionally assembled or disassembled, the bidirectional detection of the flow is realized, and the use quality of the air resistance device 160 is improved.
In this design, the shape, size, material, etc. of the housing 161 are not limited, and may be set according to actual needs. For example, as shown in fig. 5 to 6, the housing 161 is generally in a rectangular parallelepiped shape, and has a flat end surface and a side surface, which facilitates the fitting of the housing 161 in various installation environments, and the stable abutment against the surface to be installed, thereby facilitating the improvement of the installation stability of the air blocking device 160 in the applied air path system.
The air chamber may be directly formed inside the case 161 by, for example, injection molding; or in an embodiment, the housing 161 includes a bottom shell 161a and a cover shell 161b that are detachably connected, the bottom shell 161a defines a groove, and the cover shell 161b covers the notch of the groove to define the air cavity together with the groove.
The bottom case 161a and the cover case 161b may be assembled in any size direction of the case 161, for example, in a length direction, a thickness direction, a width direction, a diagonal direction, or the like of the case 161.
The bottom chassis 161a is disposed in a substantially concave shape, thereby defining a groove at one side of the bottom chassis 161 a. The cover case 161b may be provided in a plate shape, directly covering the notch of the groove; or the cover shell 161b is also arranged in a concave manner, so that another groove is defined on one side of the cover shell 161b, and the notches of the two grooves are oppositely arranged and mutually covered, and jointly enclose to define an air outlet cavity.
The detachable connection of the bottom case 161a and the cover case 161b is not limited, and may be, for example, one or more of screw fixation by a screw connection between a screw fitting and a screw hole, fastening fixation by a snap fitting and a snap fitting, magnetic attraction fixation by a magnetic attraction member and a magnetic mating member, adsorption fixation by two adsorption members, and adhesive fixation by two adhesive members. By the detachable connection between the bottom case 161a and the cover case 161b, the air chamber can be opened or sealed, thereby facilitating the replacement of the metal filter cartridge 162 in the air chamber.
The metal filter cartridge 162 is disposed in the air chamber in a blocking manner so as to be able to divide the entire air chamber into a first chamber 161c and a second chamber 161d. The metal filter element 162 is generally provided with filter holes penetrating through the thickness direction thereof, and the filter holes are generally provided with smaller pore diameters and are distributed at intervals on the metal filter element 162. When the metal filter element 162 is arranged in the air cavity, the first chamber 161c and the second chamber 161d are communicated through the filtering holes, and when the air flows through the first chamber 161c and the second chamber 161d to circulate alternately, on one hand, the metal filter element 162 can filter impurities such as foreign matters carried in the air through the filtering holes; on the other hand, the metal filter element 162 can disperse the converged air flow through the dispersed filter holes to realize air dispersion, so that the air flow with turbulent flow speed is thinned to be softer and more uniform; in addition, due to the arrangement of the multiple filter holes of the metal filter element 162, the porous loose structure is formed, so that the air flow can be absorbed and reduced in noise to a certain extent, and the use quality of the air resistance device 160 can be improved.
The shape of the metal filter cartridge 162 is not limited, and in an embodiment, the metal filter cartridge 162 may be substantially plate-shaped or block-shaped such that the first chamber 161c and the second chamber 161d are arranged side by side in a certain direction; or in an embodiment, the metal filter element 162 may be disposed in a cylindrical shape in the air cavity, the in-cylinder area of the metal filter element 162 forms the first chamber 161c, the out-cylinder area of the metal filter element 162 forms the second chamber 161d, and the filter holes are distributed in a plurality along the circumferential direction of the metal filter element 162.
The metal filter cartridge 162, which is provided in a cylindrical shape, may divide the air chamber into a first chamber 161c located in an inner region of the cylinder thereof, and a second chamber 161d circumferentially arranged along the entire circumferential outer side of the first chamber 161 c. In this way, the air flow can circulate between the first chamber 161c and the second chamber 161d along the whole circumference of the metal filter element 162, which helps to increase the total fine filtration area of the metal filter element 162 as much as possible in the limited air chamber, thereby finely filtering the air flow with a larger flow rate.
The shape, the size, the number and the like of the air cavities are not limited, and one or more air cavities can be arranged according to actual needs; when the air cavities are arranged in a plurality, the air cavities can be communicated in sequence. A metal filter cartridge 162 is disposed within at least one air cavity.
One or at least two layers of metal filter elements 162 can be arranged in the same air cavity, so that one or at least two fine filtering effects on air flow are realized. When the metal filter elements 162 are respectively arranged in the at least two air cavities, the expression forms of the two metal filter elements 162 can be arranged identically, so that the fine filtration state of the air in each air cavity is kept consistent; or the two metal filter elements 162 are arranged differently, for example, the apertures, arrangement areas and the like of the filter holes of the two metal filter elements 162 are differentiated, so that the fine filtration states of the two air chambers on the gas are different, and the gas can be selected to flow through different air chambers and the metal filter elements 162 according to practical application requirements.
When the metal filter element 162 is provided in a cylindrical shape as described above, the first gas flow channel 161e is provided so as to penetrate the casing 161 and the metal filter element 162 in this order from the outer wall of the casing 161, and the second gas flow channel 161f is provided so as to penetrate the casing 161 from the outer wall of the casing 161. The relative orientations of both the first and second gas delivery flow passages 161e and 161f on the housing 161 are not limited, and may be formed at any surface of the housing 161, respectively. Since the air flows between the first air delivery channel 161e, the first chamber 161c, the second chamber 161d and the second air delivery channel 161f in both the forward air delivery process and the reverse air discharge process, in order to lengthen the air flow path and thereby ensure that the air is more thoroughly and uniformly and stably delivered by the metal filter element 162, in an embodiment, the first air delivery channel 161e and the second air delivery channel 161f may be disposed on opposite sides of the housing 161, for example, at opposite ends of the metal filter element 162 disposed in a cylindrical shape, respectively, and specifically, the first air delivery channel 161e is disposed through one end of the metal filter element 162, and the second air delivery channel 161f is disposed adjacent to the other end of the metal filter element 162.
Based on the above, in an embodiment, the metal filter element 162 may be embodied as a cylindrical structure with both ends being disposed in a closed manner, so that the first chamber 161c defined therein is a closed cavity structure. A first gas flow channel 161e is formed at one end of the metal filter element 162 by drilling or the like, so that gas entering the first chamber 161c through the first gas flow channel 161e can only enter the second chamber 161d through the filter hole of the metal filter element 162 without leakage.
In another embodiment, the metal filter element 162 may also be embodied as a cylindrical structure with one end portion being closed and the other end portion being open. Wherein the opening of the metal filter element 162 directly forms the first air delivery channel 161e,
Of course, referring to fig. 7 to 8, in an embodiment, the metal filter element 162 may also be embodied as a cylindrical structure with two opposite ends thereof being disposed in an open manner. The air blocking device 160 further includes a sealing member interposed between the cylindrical end of the metal filter cartridge 162 and the inner cavity wall of the air cavity to seal the opening of the metal filter cartridge 162.
In actual operation, for example, when the case 161 includes the bottom case 161a and the cover case 161b as described above, the seal members include a first seal member 163a, a second seal member 163b, and a second seal member 163b, the first seal member 163a being sandwiched at the junction between the bottom case 161a and the cover case 161b, the second seal member 163b being sandwiched at one end portion of the cover case 161b and the metal filter element 162 and surrounding the outer circumference of the opening at that end portion, and the third seal member 163c being sandwiched at the other end portion of the bottom case 161a and the metal filter element 162 and surrounding the outer circumference of the opening at that end portion. A first gas delivery flow passage 161e is formed in the cover case 161b and communicates with one end of the metal filter element 162. In this way, the case 161 and the metal filter element 162 can be easily removed and replaced, the air in the air chamber can be prevented from leaking except the first air-sending flow channel 161e, the second air-sending flow channel 161f, the first detection port 161h and the second detection port 161i by the first seal 163a, and the air in the first chamber 161c can be prevented from leaking except the first air-sending flow channel 161e and the filter hole by the second seal 163b and the third seal 163c,
The first and/or second gas delivery flow passages 161e, 161f are not limited in the shape of extension, and may extend straight or may extend in a serpentine shape. The length of the first air delivery channel 161e and/or the second air delivery channel 161f may be directly defined by the wall thickness of the housing 161 or the wall thickness of the metal filter element 162, or in order to properly prolong the extension length of the first air delivery channel 161e and/or the second air delivery channel 161f, the corresponding portion of the housing 161 is convexly provided with a convex column, which defines the first air delivery channel 161e and/or the second air delivery channel 161f, and the convex column realizes convenient connection between the air blocking device 160 and the air path system to which the convex column is applied. The protruding column can be integrally formed with the housing 161, or can be detachably connected with the housing 161 in a split manner, and is not limited.
In view of the above, if the gas enters the first chamber 161c from the first gas delivery channel 161e, then enters the second chamber 161d through the filtering holes, and finally flows out from the second gas delivery channel 161f as a forward gas feeding process, then conversely, the reverse gas discharging process may refer to a process that the gas enters the second chamber 161d from the second gas delivery channel 161f, then enters the first chamber 161c through the filtering holes, and finally flows out from the first gas delivery channel 161e, or referring to fig. 9 to 10, in an embodiment, the housing 161 is further provided with a gas discharging channel 161g, and the gas discharging channel 161g is in communication with the first chamber 161 c. At this time, the reverse bleed process may refer to a process in which gas enters the second chamber 161d from the second gas delivery flow path 161f, then enters the first chamber 161c through the filter hole, and finally flows out at the bleed flow path 161 g. In this way, the first air delivery flow channel 161e and the air release flow channel 161g can be distinguished and kept independent from each other, so that the air channel connected with the first air delivery flow channel 161e does not need to be disassembled when the forward air supply process is switched to the reverse air release process.
Of course, further, in order that gas does not leak out of the bleed channels 161g during forward delivery and total gas does not leak out of the first gas delivery channels 161e during reverse bleed, in one embodiment, the first gas delivery channels 161e and/or the bleed channels 161g may be on-off adjustable.
The first air delivery flow passage 161e and/or the air release flow passage 161g may be provided in various ways, for example, by a valve structure.
Specifically, the first gas delivery flow channel 161e may be turned on or off by the first switching valve 140, and the first switching valve 140 may specifically be a flow proportional valve, which may continuously and proportionally perform remote control on the pressure, flow or direction of the gas flow according to the input electrical signal on the basis of products such as a common pressure valve, a flow valve, and a directional valve, and generally has pressure compensation performance, and the output pressure and flow may not be affected by load variation. The first switch valve 140 may be a valve with a function of controlling on/off of air flow, such as a flow solenoid valve, a gate valve, a stop valve, a butterfly valve, a ball valve, a plug valve, a check valve, a pressure reducing valve, a drain valve, etc.
The air leakage flow channel 161g can be conducted and cut off through the air leakage switch valve 150, the air leakage switch valve 150 can be specifically an electromagnetic valve, and intelligent and automatic opening adjustment can be realized under the control of the control device; the relief switch valve 150 may be a valve with a function of controlling on/off of air flow, such as a flow solenoid valve, a gate valve, a stop valve, a butterfly valve, a ball valve, a plug valve, a check valve, a pressure reducing valve, and a drain valve.
The first switching valve 140 may be the same as the relief switching valve 150 or may be different from the relief switching valve 150. In addition, in the above embodiments, for example, the first pressure regulating valve 120 and the high pressure relief valve 130, and in the following embodiments, for example, the second switch valve 180 and the low pressure relief valve 190 may be specifically set with reference to the above types of the first switch valve 140 and the relief switch valve 150, which will not be described in detail.
Furthermore, based on any of the embodiments described above, the metal filter element 162 is made of a metal material. The metallic filter element 162, which is made of a metallic material, generally has a high density, resulting in a sufficiently stable structural strength; generally has higher melting point and can be applied to a relatively high-temperature airflow environment; typically good conductors of electricity and heat, can exchange heat to some extent with the gas flow passing through. The metal material helps to reduce the wear rate of the metal filter element 162, and avoids repeated disassembly and assembly of the metal filter element 162 and the air-lock device 160.
Further, in one embodiment, the metal filter element 162 is made by calcining metal powder, and gaps between the metal powder constitute the filter holes. In this way, the filter pores can be naturally formed directly in the metal powder calcination process, the obtained filter pores have smaller pore diameters, more numbers and more random dispersion of arrangement, and no additional pore opening operation of the metal filter element 162 is required.
In view of the above, the two detection ends of the first differential pressure sensor 171 constitute the first detection portion and the second detection portion, respectively. The first detection portion is connected with the first detection port 161h, and the second detection portion is connected with the second detection port 161i, so that the pressure difference sensor can accurately detect the flow at the air-blocking device 160 through the pressure difference change between the first chamber 161c and the second chamber 161d in the forward air supply process and the reverse air release process of the air-blocking device 160.
Referring to fig. 3, in an embodiment, the gas circuit system further includes a second switch valve 180 and a low-pressure relief valve 190, where the second switch valve 180 and the low-pressure relief valve 190 are sequentially disposed on a side of the air-blocking device 160 away from the bleeder switch valve 150. In view of the above, the bleeder switch valve 150, the air blocking device 160, the second switch valve 180, and the mortgage switch valve are sequentially arranged at intervals in the transition section. The second switching valve 180 may also be provided as a solenoid valve. The low pressure relief valve 190 may conduct or intercept the air flow at the location, and the pressure of the air flow passing through the transition section is in a low pressure state due to the pressure reducing operation of each pressure reducing valve and the like at the upstream of the air path pipeline 100, and the low pressure relief valve 190 may be adapted to the low pressure environment and serve as a protection structure of the transition section, which is helpful for improving the operation quality of the transition section.
Further, in an embodiment, the air path system further includes a second differential pressure sensor 172, a detection end of the second differential pressure sensor 172 is connected between the air blocking device 160 and the second switching valve 180, and another detection end of the second differential pressure sensor 172 is used for being in communication with the atmosphere. The second differential pressure sensor 172 can acquire a real-time flow rate at this location by sensing a differential pressure change between the pressure between the air blocking device 160 and the second switching valve 180 and the atmosphere.
And/or, the gas circuit system further comprises a third differential pressure sensor 173, wherein a detection end of the third differential pressure sensor 173 is connected between the second switch valve 180 and the low-pressure safety valve 190, and the other detection end of the third differential pressure sensor 173 is used for being communicated with the atmosphere. The third differential pressure sensor 173 is capable of acquiring a real-time flow rate at the position by sensing a differential pressure change between the pressure between the second switching valve 180 and the low pressure relief valve 190 and the atmosphere.
The gas circuit system further includes a second connector 420, where the second connector 420 may specifically include a second connector and a second butt joint 412, where the second connector is disposed at a downstream pipe port of the transition section, and the second butt joint 412 is disposed at a pipe port of an upstream of the pneumoperitoneum pipe 200, so as to realize detachable connection between the gas circuit pipe 100 and the pneumoperitoneum pipe 200.
Furthermore, referring to fig. 4, in one embodiment, the pneumoperitoneum line 200 includes a main body line section and a pneumoperitoneum needle, the main body line section is connected with the gas line 100, and the pneumoperitoneum needle is mainly inserted into the abdominal cavity of the human body. The downstream mouth of main part pipeline section is provided with fourth connector 441, and the upstream mouth of pneumoperitoneum needle is provided with fourth butt joint 442, through the detachable connection between fourth connector 441 and the fourth butt joint 442, realizes the dismouting between main part pipeline section and the pneumoperitoneum needle and fixes.
In an embodiment, the air path system further includes a filter 210, where the filter 210 is disposed on a main pipe section of the pneumoperitoneum pipe 200, so as to filter the air entering the pneumoperitoneum pipe 200 through the air path pipe 100, filter out the interference impurities, and also achieve the purposes of softening and homogenizing the air flow, absorbing the sound and reducing the noise.
In an embodiment, the gas circuit system further includes a heating device 220, where the heating device 220 is disposed on a main pipe section of the pneumoperitoneum pipe 200 to heat the gas entering the pneumoperitoneum pipe 200 through the gas circuit pipe 100. The heating device 220 includes a heating wire disposed on the pneumoperitoneum tube 200, and an external tube structure connected to the heating wire, and the external tube structure is electrically connected to, for example, an external control device or an external power supply, through a third connector 431 and a third pair of connectors 432. The heating device 220 can heat or maintain the air flow flowing through the pneumoperitoneum pipeline 200 within a proper temperature range, so as to reduce the temperature difference between the air path system and the abdominal cavity of the human body when the pneumoperitoneum needle is inserted into the abdominal cavity of the human body, and improve the comfort degree in the insertion state.
In view of the above, the first differential pressure sensor 171 senses and obtains the real-time flow value of the gas circuit system 1. Regarding the flow rate detection unit 5, the flow rate detection unit 5 may be directly provided as a flow meter provided at a downstream outlet of the pneumoperitoneum pipe, and the actual flow rate value of the gas circuit system 1 is detected and obtained.
The control device 7 is electrically connected with each valve body, each sensor and the flow detection unit 5 in the gas circuit system 1, so as to perform opening and closing control and opening adjustment on each valve body, and perform data acquisition and opening and closing control on each sensor. Wherein, when the control device 7 receives the real-time flow value obtained by the first differential pressure sensor 171 and the actual flow value obtained by the flow detection unit 5, the data processing is performed on the real-time flow value and the actual flow value.
The control device 7 collects various parameters in the gas path system 1, such as set pressure, set flow, real-time flow value, actual flow value, etc., and sends the collected parameters to the display device 6 for display by the display device 6.
The display device 6 generally displays the flow value of the gas being transported in the gas path system 1. When the first differential pressure sensor 171 obtains the differential pressure Δp between the first air pressure and the second air pressure (or the differential pressure between the third air pressure and the fourth air pressure) based on the detection of the first detection portion and the second detection portion thereof, the display device 6 generally obtains the differential pressure Δp by the theoretical formula (i.e., L Theory of =k×Δp, or Δp=l Theory of The Δp is the pressure difference across the air-lock device, that is, the sensed data obtained by the first differential pressure sensor 171), and the flow rate value (hereinafter referred to as the theoretical flow rate value, for distinction) is derived. However, in practical application, when a certain flow of gas passes through a metal filter element in the air-lock device, the gas is influenced by the characteristics of the metal filter element, such as shape, material uniformity, ambient temperature and the like, and the real-time pressure difference DeltaP between two ends of the air-lock device True sense Delta P from theory Theory of Is different, that is, the theoretical flow value obtained by theoretical push has error with the real-time flow. Therefore, in order to make the flow rate value displayed in the display device 6 more accurate, the present invention performs calculation confirmation mainly by calculating the correction relationship between the theoretical flow rate value obtained by calculation and the actual flow rate value obtained by sensing by the flow rate detecting unit 5, corrects the actual flow rate value by the sensed data obtained by sensing by the first differential pressure sensor 171, and displays it in the display device 6, improvingThe accuracy of the flow data in the display device 6 (for specific reference to the data processing method of the gas delivery system described below).
Further, in an embodiment, the control device 7 includes a program compiling module for compiling a correction relation between the real-time flow value obtained by the first differential pressure sensor 171 and the actual flow value obtained by the flow detection unit 5, and a storage module for storing the correction relation. In particular applications, the process of correcting the theoretically derived real-time flow value is generally performed prior to the actual operation of the gas delivery system. When the above-described correction manner is determined, for example, in that correction is performed by a correction relation between the real-time flow value and the actual flow value, and the correction relation is determined, the program compiling module may perform program recompilation on the control device 7 based on the correction relation and store the compiled program in the storage module, so that, when the gas delivery system is in a subsequent normal operation, the theoretical differential pressure sensed by the first differential pressure sensor 171 is directly corrected, the corrected real-time flow value is obtained, and the corrected real-time flow value is displayed in the display device 6.
In addition, in an embodiment, the gas delivery system further includes a power supply device 8, the power supply device 8 is electrically connected to an external power source, and the power supply device 8 is configured to provide power for the gas path system 1, the display device 6 and the control device 7. The power supply device 8 may be provided, for example, as a battery pack, a storage battery, or the like, depending on the type of power source required for the gas delivery system, without limitation. By integrating the power supply device 8 with the gas circuit system 1, the display device 6 and the control device 7, the integrity and functional integrity of the gas delivery system are facilitated.
Based on any of the above embodiments related to a gas delivery system, please refer to fig. 11, the present invention further provides a data processing method of a gas delivery system, which is mainly used for correcting the theoretical real-time flow value (hereinafter referred to as theoretical flow value) obtained based on the sensing of the first differential pressure sensor 171, and specifically includes the following steps:
step S100: acquiring a set pressure value, and acquiring a plurality of set flow values to be regulated according to the set pressure value;
in this embodiment, the set pressure value is set by the user based on the actual situation of the gas delivery system, for example, each structural parameter of the gas delivery system, the actual application requirement, and the like, and specifically, the set pressure value may be set to 15mmHg, for example.
The coefficient K value in the gas delivery system for the theoretical formula set forth above, for example, specifically set to K20, can then be set by querying the data, or by empirical values.
Step S200: the control gas circuit system 1 operates according to each set flow value;
in this embodiment, when the set pressure value is determined, the number and the specific value of the set flow values of the gas delivery system may be obtained according to the actual application requirement, so as to form a set flow. The gas circuit system 1 is started to operate, and the gas circuit system 1 is used for orderly carrying out dynamic adjustment operation on each set flow value in the set flow set.
Step S300: acquiring a theoretical flow value obtained based on the sensing of the first differential pressure sensor 171 and an actual flow value obtained based on the sensing of the flow detection unit 5 while the gas path system 1 operates each of the set flow values;
in this embodiment, when the gas circuit system 1 is running to each set flow value, the theoretical flow value of the first differential pressure sensor 171 under the current set flow value and the actual flow value of the flow detection unit 5 under the current set flow value are repeatedly measured and recorded, and each set flow value, theoretical flow value and actual flow value are recorded in a one-to-one mapping association manner, so as to form a data set. After the gas circuit system 1 runs all the set flow values, a plurality of data sets are formed, and finally original measurement data are formed.
Referring specifically to table 1 below, table 1 mainly takes data acquisition as an example with a set pressure of 15mmHg, K of 20, and a set flow value of from 1 to 44.
Table 1 raw measurement data of theoretical flow value and actual flow value
Step S400: fitting to obtain a correction relation between the theoretical flow value and the actual flow value according to each set flow value, the theoretical flow value and the actual flow value, wherein the correction relation specifically comprises:
Step S410: sorting all the set flow values according to a set rule;
step S420: drawing a first curve by taking the theoretical flow value as a horizontal axis and the actual flow value as a vertical axis corresponding to the sequenced set flow value;
step S430: and determining the number of the partitions of the first curve and the function types corresponding to the partitions, performing function fitting on the first curve to obtain a fitting curve, and obtaining a correction relation between a theoretical flow value and an actual flow value according to the fitting curve.
In this embodiment, each set flow value in the set flow set may be an arithmetic variation, and may be a non-arithmetic variation. According to the actual situation, sorting all the set flow values in the set flow set, for example, arranging all the original measured data in the order from big to small or in the order from small to big; or screening the original measured data, removing the set flow value which is obviously not effective in the set flow set or the associated theoretical flow value and the actual flow value, and then sequencing the remaining effective set flow value and the associated theoretical flow value and the actual flow value, for example, according to the sequence from small to large of the set flow values shown in table 1, and arranging the data sets. Next, according to the above-described sorting, as shown in fig. 12 to 13, a first curve (i.e., the dot-shaped curves in fig. 12 to 13) is drawn with the theoretical flow value on the horizontal axis and the actual flow value on the vertical axis.
The characteristics of the first curve are obtained, whether the whole data range corresponding to the first curve is fitted or the whole data range corresponding to the first curve is partitioned into two, three or more partitioned data ranges is determined, the curve segments corresponding to the partitioned data ranges are subjected to partition fitting, fitted curves (namely, solid curves in fig. 12 to 13) of the curve segments corresponding to the partitioned data ranges are obtained, the function types of the fitted curves are determined, the function types of the curve segments corresponding to the partitioned data ranges at the preliminary judgment position are primary functions, secondary functions or cubic functions, and then the function relation of the fitted curves is obtained, wherein all the function relation forms the correction relation.
Specifically, taking the original measurement data in the above table 1 as an example, the entire data range is partitioned or two partitioned data ranges as shown in fig. 12 and 13, and:
as shown in fig. 12, when the theoretical flow value is 0 to 30mmHg, the actual flow value and the theoretical flow value are in a quadratic relationship:
y1＝0.0022×x 2 +0.7337×x+1.0332
as shown in fig. 13, when the theoretical flow value is 25 to 44mmHg, the actual flow value and the theoretical flow value are in a cubic relationship:
y2＝0.0028×x 3 -0.2573×x 2 +8.8677×x-84.318
And according to the preamble L Theory of As can be seen from the following correction relation between the actual flow value L and the differential pressure data Δp obtained by the first differential pressure sensor 171:
L1＝y1＝f 1 (ΔP)
L2＝y2＝f 2 (ΔP)
further, in an embodiment, after the step S400, the method further includes:
step S510: storing the correction relation;
step S520: when the operation of the gas delivery system is sensed, the actual flow rate value is corrected by using the sensed data obtained by the first differential pressure sensor 171 in real time according to the correction relation, and displayed on the display device 6.
In the present embodiment, the above correction relation is stored in the storage module of the control device 7, and a program compiling module is written, and the program compiling module rewrites the calculation mode of the real-time flow rate value displayed on the display device 6 in the control device 7 according to the above correction relation, so that when the gas delivery system is operating, the differential pressure data obtained by sensing by the first differential pressure sensor 171 is utilized to correct the actual flow rate value, and an accurate flow rate value is obtained and displayed on the display device 6.
The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structural changes made by the description of the present invention and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the invention.
Claims (10)
1. The gas conveying system is characterized by comprising a gas path system, a flow detection unit, a display device and a control device;
the gas circuit system is provided with a gas circuit pipeline and a pneumoperitoneum pipeline which are sequentially connected, the gas circuit system comprises a first switch valve, a release switch valve, a gas resistance device and a first pressure difference sensor which are sequentially arranged on the gas circuit pipeline at intervals, the first pressure difference sensor is provided with a first detection part and a second detection part, the first detection part is connected between the first switch valve and the gas resistance device, and the second detection part is connected at a pipeline of one side of the gas resistance device, which is far away from the release switch valve;
the flow detection unit is arranged at the output end of the pneumoperitoneum pipeline;
the control device is electrically connected with the air path system and the display device respectively, so as to process the sensing data of the first differential pressure sensor and the flow detection unit and display the sensing data by the display device.
2. The gas delivery system according to claim 1, wherein the control device comprises a program compiling module for compiling a correction relation between a theoretical flow value obtained by the first differential pressure sensor and an actual flow value obtained by the flow detection unit, and a storage module for storing the correction relation.
3. The gas delivery system of claim 1, further comprising a power supply device for electrically connecting to an external power source, the power supply device for providing power to the gas circuit system, the display device, and the control device.
4. The gas delivery system of claim 1, wherein the gas circuit system further comprises:
the pressure sensor, the at least one first pressure regulating valve and the high-pressure safety valve are sequentially arranged at the upstream of the first switch valve along the air supply direction; and/or the number of the groups of groups,
the device comprises a second switch valve, a low-pressure safety valve, a second differential pressure sensor and a third differential pressure sensor, wherein the second switch valve and the low-pressure safety valve are sequentially arranged on one side, far away from the bleeder switch valve, of the air resistance device, one detection end of the second differential pressure sensor is connected between the air resistance device and the second switch valve, the other detection end of the second differential pressure sensor is communicated with the atmosphere, one detection end of the third differential pressure sensor is connected between the second switch valve and the low-pressure safety valve, and the other detection end of the third differential pressure sensor is communicated with the atmosphere.
5. The gas delivery system of claim 1, wherein the gas circuit line is configured to access an external central gas source; and/or the number of the groups of groups,
the gas circuit system further comprises a gas storage steel bottle and a second pressure regulating valve, and the second pressure regulating valve is connected between the gas storage steel bottle and the gas circuit pipeline.
6. The gas delivery system of claim 1, wherein the gas circuit system further comprises:
the filter is arranged on the pneumoperitoneum pipeline and used for filtering the gas entering the pneumoperitoneum pipeline through the gas circuit pipeline; and/or the number of the groups of groups,
and the heating device is arranged on the pneumoperitoneum pipeline so as to heat the gas entering the pneumoperitoneum pipeline through the gas circuit pipeline.
7. The gas delivery system of claim 1, wherein the gas barrier comprises a housing and a metal filter element disposed within the housing, the metal filter element being cylindrically disposed and dividing an interior cavity of the housing into a first chamber disposed within a cylinder thereof and a second chamber disposed outside the cylinder thereof:
the shell is provided with a first air conveying flow channel and a second air conveying flow channel, one end of the first air conveying flow channel is respectively communicated with the first switch valve and the discharge switch valve, the other end of the first air conveying flow channel is communicated with the first cavity, one end of the second air conveying flow channel is communicated with the second cavity, and the other end of the second air conveying flow channel is communicated with the pneumoperitoneum pipeline;
The first detection part is connected with the first chamber, and the second detection part is connected with the second chamber;
the metal filter element is made of metal powder through calcination, and gaps among the metal powder form filter holes of the metal filter element.
8. A method of data processing of a gas delivery system according to any one of claims 1 to 7, comprising:
acquiring a set pressure value, and acquiring a plurality of set flow values to be regulated according to the set pressure value;
the control gas circuit system operates according to each set flow value;
when the gas circuit system runs each set flow value, acquiring a theoretical flow value obtained based on the sensing of a first differential pressure sensor and an actual flow value obtained based on the sensing of a flow detection unit;
and fitting according to each set flow value, the theoretical flow value and the actual flow value to obtain a correction relation between the theoretical flow value and the actual flow value.
9. The method of claim 8, wherein the step of fitting a correction relation between a theoretical flow value and an actual flow value based on each of the set flow value, the theoretical flow value, and the actual flow value comprises:
Sorting all the set flow values according to a set rule;
drawing a first curve by taking the theoretical flow value as a horizontal axis and the actual flow value as a vertical axis corresponding to the sequenced set flow value;
and determining the number of the partitions of the first curve and the function types corresponding to the partitions, performing function fitting on the first curve to obtain a fitting curve, and obtaining a correction relation between a theoretical flow value and an actual flow value according to the fitting curve.
10. The method for processing data of a gas delivery system according to claim 8 or 9, wherein after the step of fitting to obtain a correction relation between a theoretical flow value and an actual flow value based on each of the set flow value, the theoretical flow value, and the actual flow value, further comprising:
storing the correction relation;
when the operation of the gas conveying system is sensed, the actual flow is corrected by using the sensing data obtained by the real-time sensing of the first differential pressure sensor according to the correction relation, and the actual flow is displayed on a display device.
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| CN202310328708.9A CN116327275A (en) | 2023-03-30 | 2023-03-30 | Gas delivery system and data processing method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117553840A (en) * | 2024-01-11 | 2024-02-13 | 深圳汉光电子技术有限公司 | Instrument based on intelligent management and system thereof |
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2023
- 2023-03-30 CN CN202310328708.9A patent/CN116327275A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117553840A (en) * | 2024-01-11 | 2024-02-13 | 深圳汉光电子技术有限公司 | Instrument based on intelligent management and system thereof |
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