CN2480840Y - Qualiyty and flow controller for nitrogen-containing air - Google Patents
Qualiyty and flow controller for nitrogen-containing air Download PDFInfo
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- CN2480840Y CN2480840Y CN 01245904 CN01245904U CN2480840Y CN 2480840 Y CN2480840 Y CN 2480840Y CN 01245904 CN01245904 CN 01245904 CN 01245904 U CN01245904 U CN 01245904U CN 2480840 Y CN2480840 Y CN 2480840Y
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Abstract
The utility model relates to a quality and flow controller for nitrogen-containing air, comprising a fast port, a rotermeter, a gas rapid cut-off magnet-valve, NO2 cleaner, a quality and flow controller, a gas by-pass switch, a gas flow alarm, and two sets of air-feed loops, under the conditions of normal requirements and in need of large flow gas, which are connected with stainless steel connecting pipe, wherein the gas rapid cut-off magnet-valve connects with circuit of a respirator via a cable, when the respirator goes out of order and stops, the respirator can close rapidly to cut off air feed, which can prevent accidents. The utility model can match various ventilation modes of the respirators and auxiliary device in use, which has the advantages of good safety and applicability, easy maintenance and low price, thereby suitable for hospitals at all levels.
Description
The nitrogenous gas mass flow control appts relates to nitrogen gas safe handling control technology, is a kind of novel nitrogenous gas mass flow control appts, and it can use with the lung ventilator or the respiratory auxiliary system coupling of different ventilating modes.
The application of nitrogenous gas is more and more widely used in different fields, and different request for utilizations is arranged.Medical nitrogenous gas (as nitrogen monoxide) is as a kind of medicine, and therefore monitoring and the control that nitrogenous gas is used requires just higher.To the mensuration and the control of contained nitrogen mass rate in the medical gas, at present more satisfactory is to adopt temperature-sensitive sensing technology pick-up unit to monitor and control.This device mainly is to pass through heater coil, the gas that makes the heating of measuring tube tube wall and enter measuring tube is heated, when no gas flows into measuring tube, the temperature that is arranged between the temperature sensor of measuring tube upstream extremity and downstream end equates, the output of bridge current balance no signal is shown as zero on the indicating instrument.When the gas stream after being heated during through measuring tube, the temperature difference appears in detected temperature between the temperature sensor of upstream extremity temperature sensor and downstream end, the bridge current out of trim, the voltage signal that output is directly proportional with the nitrogen gas mass rate, on indicating instrument, show, so that the mass rate of nitrogen gas is controlled.But the complex structure of this device, the postorder in monitoring and the control detect step according to the signal of preorder output and startup work makes that the speed of whole monitoring and control reaction is slow, are running under the situation of unexpected power failure, the device accident that also meets accident easily.
Deficiency at existing temperature-sensitive technical monitoring device, the utility model proposes a kind of simple and reasonable, can not only effectively monitor the nitrogen mass rate and to the control of nitrogen mass rate, and can in case of emergency automatically the fast shut-off air feed guarantee safety and can with the lung ventilator of different ventilating modes and the nitrogenous gas mass flow control appts of servicing unit coupling use.
The utility model is to constitute like this: it is mainly by fast interface, spinner-type flowmeter, and mass flow controller, the gas bypassing switch, the gas flow alarm, gas fast shut-off solenoid valve is formed by connecting by the stainless steel connecting pipe.Wherein spinner-type flowmeter is monitored and is controlled the mass rate of nitrogenous gas by spinner-type flowmeter and mass flow controller by gas fast shut-off solenoid valve and mass flow controller, nitrogenous gas air feed loop when the gas flow alarm connects and composes normal condition; When the flow of mass flow controller can not be satisfied the demand, can pass through the air feed loop air feed of spinner-type flowmeter, gas fast shut-off solenoid valve and gas bypassing switch, gas flow alarm formation, adopt spinner-type flowmeter that the flow of gas is controlled.The gas flow alarm is according to the upper and lower bound of setting safe air-flow with the requirement of gas in advance, if gas flow departs from the safety value of setting during work, the gas flow alarm sends warning automatically.When dash forward chance power failure and/or lung ventilator quit work, perhaps adopt gas flow sensing instrument is set in breather line, if in 30 seconds, there is not the air feed variations in flow, the main control unit of lung ventilator has quit work and this signal has been passed to gas flow alarm and gas fast shut-off solenoid valve, start solenoid valve work, valve is closed rapidly, cut off nitrogenous gas and enter pipeline continuation air feed, prevent owing to the too high accident that bad reaction takes place of nitrogen content in the gas.
The advantage of the utility model device is: the spinner-type flowmeter in the device, air-flow fast shut-off solenoid valve, mass flow controller and gas flow alarm, and by spinner-type flowmeter, air-flow fast shut-off solenoid valve, gas bypassing switch and gas flow alarm have been formed two groups of safe and reliable mass rate control air feed loops, make nitrogenous gas in safe condition, obtain using, adopt fast interface to carry out air intake opening and be connected with the gas outlet that not only connection speed is fast but also the good leak tightness of interface, interface can not produce nitrogen and leak, device all adopts the stainless steel connecting pipe to connect, and has prevented owing to making for a long time inside pipe wall generation corrosion.The utility model is simple and reasonable for structure, safe in utilization and cost is low, its price only be equivalent to an import the lung ventilator price 10%, and can use with the lung ventilator coupling of different ventilating modes, the technological means of nitrogen is provided during as the assisted ventilation oxygen supply under the condition of nitrogen concentration in monitoring in real time, control nitrogenous gas, and its applicability is good.
Accompanying drawing is the utility model embodiment accompanying drawing, wherein;
Fig. 1. be that the utility model device and lung ventilator pipeline coupling is used synoptic diagram.
Fig. 2. be the utility model apparatus structure synoptic diagram.
The utility model will be further described according to above-mentioned accompanying drawing.The utility model comprises fast interface 2, valve 3, spinner-type flowmeter 4, gas fast shut-off solenoid valve 5, monitoring, control display instrument 6, NO
2Remover 7, mass flow controller 8, gas bypassing switch 9, gas flow alarm 10 is formed by connecting by stainless steel connecting pipe 11.Wherein, fast interface 2 with contain source nitrogen and be connected, be connected with valve 3 by stainless steel connecting pipe 11, equally by stainless steel connecting pipe 11, valve 3 and spinner-type flowmeter 4, spinner-type flowmeter 4 and gas fast shut-off solenoid valve 5, gas fast shut-off solenoid valve 5 and NO
2Remover 7, NO
2Remover 7 and mass flow controller 8, mass flow controller 8 is communicated with gas flow alarm 10, and constitutes the air feed loop under the normal need situation after being communicated with the air supply pipe of lung ventilator by fast interface 2, NO again
2The nitrogen dioxide that remover 7 is removed in its body, monitoring, control display instrument 6 is connected with mass flow controller 8, mass rate to nitrogenous gas is monitored, control and adjusting, 10 pairs of gas flow alarms exceed the safe way requirement, flow sends warning when too high or low excessively, gas fast shut-off solenoid valve 5 is connected with the lung ventilator circuit by cable, when lung ventilator breaks down when quitting work, gas fast shut-off solenoid valve 5 can cut out rapidly in time, cut off nitrogenous gas and continue air feed in pipeline, prevent to cause the generation of accident owing to nitrogen content is too high.In addition, valve 3 and spinner-type flowmeter 4, spinner-type flowmeter 4 and gas fast shut-off solenoid valve 5, gas fast shut-off solenoid valve 5 and gas bypassing switch 9, gas bypassing switch 9 is communicated with gas flow alarm 10, and be communicated with the back with lung ventilator and constitute air feed loop the big situation of the flow requirement of nitrogenous gas, make through spinner-type flowmeter 4 and regulate, the gas bypassing switch 9 of the nitrogenous gas of control by opening, the air supply pipe that enters lung ventilator behind the gas flow alarm 10 mixes with gas in the air supply pipe of lung ventilator, and 10 pairs of gas flow alarms send warning when surpassing the safe way requirement.The utility model can use with lung ventilator and servicing unit coupling thereof under the state of safety.
Experimental data of the present utility model is as follows: when the nitrogen to 1000ppm uses, its Control Flow need be adjusted according to the total flow in lung ventilator air feed loop, when total flow is constant relatively, by regulating actual flow, set NO concentration in the 3-20ppm scope, be stabilized in＜± the 1ppm level.Special when lung ventilator is the level pressure ventilating mode coupling use, the interior flow of pipeline can change, reach low concentration of NO (during the Control Flow of＜10ppm=, can not occur＞± deviation of 1ppm, meet the stability requirement of clinical practice
Embodiment 1.
When treatment neonate's persistent pulmonary hypertensis or congenital heart disease merging pulmonary hypertension, the inlet end of device is connected with nitrogen monoxide steel cylinder reduction valve by quick connector 2, the output terminal of device is connected with the air feed loop of lung ventilator by quick connector 2, the flow control button of regulating device, monitoring, control display instrument 6 shows the percentage flow, (as: 20 represent the flowing full journey be 20% flow of 200 ml/min), opening and connecting NO behind the lung ventilator air feed, carry out the continuous gas sampling by its incoming end downstream at least 20 centimeters again, use the galvanochemistry nitrogen monoxide, the content of nitrogen dioxide detector is measured and is entered the preceding nitrogen monoxide of lung, nitrogen dioxide relative concentration (ppm of unit), according to the NO concentration in lung ventilator per minute throughput and the known steel cylinder, calculate the relative concentration value of the NO that measures, flow to help default mass flow controller 8, and the actual flow of control of quality flow controller 8, reach the purpose of controlling the NO trouble free service.If the flow of mass flow controller 8 can not satisfy actual needs, open gas bypassing switch 9, make the function of mass flow controller 8 no Control Flow, but keep gas communication, by regulating spinner-type flowmeter 4 control higher flows.In case lung ventilator power fail, the variation of supply current can make gas fast shut-off solenoid valve 5 close, avoid too high NO gas to enter the damage that causes lung in the lung.
Be used to diagnose pulmonary vascular function, when measuring the pulmonary hemodynamics parameter, suck NO, adopt this device control NO flow generally in 0-200 ml/min scope through face shield.Time control 5-10 minute can be measured pulmonary arterial pressure and pulmonary vascular resistance etc. by wound arterial duct side pressure or Doppler's colorful ultrasonic ultrasonic technique are arranged.
Claims (2)
1. the nitrogenous gas mass flow control appts comprises fast interface (2), valve (3), spinner-type flowmeter (4), gas fast shut-off solenoid valve (5), monitoring, control display instrument (6), NO
2Remover (7), mass flow controller (8), gas bypassing switch (9), gas flow alarm (10), stainless steel connecting pipe (11) is characterized in that: adopt stainless steel connecting pipe (11) fast interface (2), valve (3), spinner-type flowmeter (4), gas fast shut-off solenoid valve (5), NO
2Remover (7), mass flow controller (8), gas flow alarm (10) are communicated with the air feed loop that constitutes under the normal need situation with lung ventilator; Adopt stainless steel connecting pipe (11) fast interface (2), valve (3), spinner-type flowmeter (4), gas fast shut-off solenoid valve (5), NO
2Remover (7), gas bypassing switch (9), gas flow alarm (10) are communicated with the air feed loop of back formation to the big situation of the flow requirement of nitrogenous gas with lung ventilator.
2. device according to claim 1 is characterized in that: gas fast shut-off solenoid valve (5) is connected with the lung ventilator circuit by cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01245904 CN2480840Y (en) | 2001-06-13 | 2001-06-13 | Qualiyty and flow controller for nitrogen-containing air |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01245904 CN2480840Y (en) | 2001-06-13 | 2001-06-13 | Qualiyty and flow controller for nitrogen-containing air |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2480840Y true CN2480840Y (en) | 2002-03-06 |
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ID=33657069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01245904 Expired - Lifetime CN2480840Y (en) | 2001-06-13 | 2001-06-13 | Qualiyty and flow controller for nitrogen-containing air |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2480840Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1301403C (en) * | 2004-08-02 | 2007-02-21 | 天津港保税区鑫利达石油技术发展有限公司 | Probe structure and multipoint gas detector |
| CN101718699B (en) * | 2009-12-02 | 2012-06-13 | 江苏天瑞仪器股份有限公司 | Air supply system of inductive coupling plasma light source |
| CN102933248A (en) * | 2010-04-29 | 2013-02-13 | 迈柯唯销售服务德国有限公司 | Method and device for supplying at least one medical gas to patient receiving artificial respiration with aid of anesthesia machine |
-
2001
- 2001-06-13 CN CN 01245904 patent/CN2480840Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1301403C (en) * | 2004-08-02 | 2007-02-21 | 天津港保税区鑫利达石油技术发展有限公司 | Probe structure and multipoint gas detector |
| CN101718699B (en) * | 2009-12-02 | 2012-06-13 | 江苏天瑞仪器股份有限公司 | Air supply system of inductive coupling plasma light source |
| CN102933248A (en) * | 2010-04-29 | 2013-02-13 | 迈柯唯销售服务德国有限公司 | Method and device for supplying at least one medical gas to patient receiving artificial respiration with aid of anesthesia machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20110613 Granted publication date: 20020306 |