CN204133903U - Carbon dioxide air supply plant - Google Patents
Carbon dioxide air supply plant Download PDFInfo
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- CN204133903U CN204133903U CN201420418398.6U CN201420418398U CN204133903U CN 204133903 U CN204133903 U CN 204133903U CN 201420418398 U CN201420418398 U CN 201420418398U CN 204133903 U CN204133903 U CN 204133903U
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Abstract
This utility model provides a kind of carbon dioxide air supply plant, comprise snorkel, control unit, display unit, input pressure monitoring unit and output end pressure monitoring means, snorkel is disposed with input interface, air relief valve, electromagnetic valve, proportioning valve, flow detection unit and output interface; Control unit is connected with electromagnetic valve, proportioning valve, flow detection unit, display unit, input pressure monitoring unit and output end pressure monitoring means respectively by holding wire; Input pressure monitoring unit is connected by holding wire with between input interface, and output end pressure monitoring means is connected by holding wire with between output interface.This utility model is based on flow Closed loop Control, by detecting carbon dioxide output flow in real time, comparative example valve carries out PWM control, and then keeps the stable of output flow, can ensure when output resistance changes still can the stable output of guaranteed flow simultaneously, improves the safety of use.
Description
Technical field
This utility model belongs to technical field of medical instruments, specifically, and particularly a kind of carbon dioxide air supply plant.
Background technology
Carbon dioxide air supply plant be a kind of for during endoscopic surgery up and down digestive tract send into a kind of medical apparatus and instruments of carbon dioxide.When interior arthroscopic diagnosis, according to actual needs, sending into the carbon dioxide of certain flow by scope, to dilute oxygen concentration in human body alimentary canal and combustable gas concentration, preventing electric knife produces when performing the operation spark to trigger the burning of fuel gas.
Day by day universal along with interior arthroscopic diagnosis, the application of carbon dioxide air supply plant have also been obtained great development, at present, the complete machine that single-chip microcomputer is widely used in carbon dioxide air supply plant controls, realize the complete monitoring to input pressure, output pressure, and select different flow to export according to actual needs, realize the detection of various safety index simultaneously, and Programmed control and fault detect, instruction.Thus substantially increase the safety and reliability of equipment self, simplify the operating process of doctor.
In view of the feature of carbon dioxide air supply plant, require that output flow is stablized, and there is input, output pressure monitoring, alarming and control.Prior art carbon dioxide air supply plant generally has input and output pressure monitoring, flow monitoring function, and can open or close carbon dioxide output according to the change of input and output pressure.But there is following defect in this technology:
1, output flow is relevant with the size of output channel, namely selects heavy caliber output channel, then output flow increases, and selects small-bore output channel, then output flow reduces.
2, during actual operation, because of the reasons such as output channel bending cause air resistance to increase time, output flow can be caused to reduce, cause doctor to be unable to estimate the actual gas gross sent into patient, thus bring safe hidden danger.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of carbon dioxide air supply plant, the stable of carbon dioxide output flow can be kept, the stable output that still can ensure flow of carbon dioxide gas amount when output resistance changes can be ensured simultaneously.
The technical solution of the utility model is as follows: a kind of carbon dioxide air supply plant, comprise snorkel, control unit, display unit, input pressure monitoring unit and output end pressure monitoring means, described snorkel is disposed with input interface, air relief valve, electromagnetic valve, proportioning valve, flow detection unit and output interface; Described control unit is connected with described electromagnetic valve, proportioning valve, flow detection unit, display unit, input pressure monitoring unit and output end pressure monitoring means respectively by holding wire; Described input pressure monitoring unit is connected by holding wire with between described input interface, and described output end pressure monitoring means is connected by holding wire with between described output interface.
Described input pressure monitoring unit is for monitoring the input gas pressure value of input interface, control unit stores preset pressure value range, when described input gas pressure value exceeds described preset pressure value range, control unit sends electromagnetic valve described in signal at stop and described proportioning valve.
The present flow rate value of the real-time detected gas of flow detection unit, and present flow rate value is sent into control unit, control unit stores preset flow value, and when present flow rate value exceeds described preset flow value, control unit sends control signal to proportioning valve.
Described output end pressure monitoring means is for monitoring the output gas pressure value of output interface, and control unit stores threshold pressure, and output gas pressure value and threshold pressure are compared backward proportioning valve and send control signal by control unit.
Beneficial effect: carbon dioxide enters into after air relief valve carries out voltage stabilizing from input interface, enters proportioning valve, then exported by flow detection unit, output interface and enter endoscope system by electromagnetic valve.The flow of flow detection unit to carbon dioxide detects in real time, and data feeding control unit will be detected, the preset flow value that control unit sets according to the present flow rate value detected and user compares, control unit sends control signal and comparative example valve carries out PWM control impuls width modulated that (PWM is the abbreviation of English " Pulse Width Modulation " to proportioning valve, be called for short pulsewidth modulation, utilize the numeral of microprocessor to export the very effective technology of one controlled analog circuit, be widely used in from measurement, the power that communicates controls with many fields of conversion), when the present flow rate value detected is less than the preset flow value of user's setting, increase dutycycle, otherwise, reduce dutycycle, thus the preset flow value making output flow and user set is consistent.This utility model is based on flow Closed loop Control, by detecting carbon dioxide output flow in real time, comparative example valve carries out PWM control, and then keeps the stable of output flow, can ensure when output resistance changes still can the stable output of guaranteed flow simultaneously, improves the safety of use.
Accompanying drawing explanation
Fig. 1 is structural principle schematic diagram of the present utility model.
Detailed description of the invention
Below in conjunction with drawings and Examples, the utility model is described in further detail:
As shown in Figure 1, a kind of carbon dioxide air supply plant, comprise snorkel 1, control unit 2, display unit 3, input pressure monitoring unit 4 and output end pressure monitoring means 5, snorkel 1 is disposed with input interface 6, air relief valve 7, electromagnetic valve 8, proportioning valve 9, flow detection unit 10 and output interface 11; Control unit 2 is connected with electromagnetic valve 8, proportioning valve 9, flow detection unit 10, display unit 3, input pressure monitoring unit 4 and output end pressure monitoring means 5 respectively by holding wire; Input pressure monitoring unit 4 is connected by holding wire with between input interface 6, is connected between output end pressure monitoring means 5 with output interface 11 by holding wire.Air relief valve 7 can ensure that the source of the gas under different air pressure can be applied to this device reliably, and improve compatibility and the reliability of system, the model of air relief valve 7 can adopt the SR200L-08 of AirTAC company.Electromagnetic valve 8 on-off actions, also can the output of closing carbon dioxide gas completely when proportioning valve 9 lost efficacy, and improve the safety of system, the model of electromagnetic valve 8 can adopt the 3V1-06-DC24V of AirTAC company.The model of proportioning valve 9 can adopt 2824 of burkert company, and the model of flow detection unit 10 can adopt the AWM43600V of Honeywell company.
Input pressure monitoring unit 4 is for monitoring the input gas pressure value of input interface 6, and control unit 2 stores preset pressure value range, and when inputting gas pressure value and exceeding preset pressure value range, control unit 2 sends signal at stop electromagnetic valve 8 and proportioning valve 9.Preset pressure value range in the present embodiment is 0.1MPA ~ 0.6MPA, and when input gas pressure value is lower than 0.1MPA or higher than alarm during 0.6MPA, control unit 2 sends signal at stop electromagnetic valve 8 and proportioning valve 9, and reminding user.Input pressure monitoring unit 4 can adopt the 40PC150G2A of Honeywell company.
The present flow rate value of the real-time detected gas of flow detection unit 10, and present flow rate value is sent into control unit 2, control unit 2 stores preset flow value, preset flow value in the present embodiment is 1 liter/min, preset flow value can also be pre-seted according to practical situation by user, when present flow rate value exceeds preset flow value, control unit 2 sends control signal to proportioning valve 9.
Output end pressure monitoring means 5 is for monitoring the output gas pressure value at output interface 11 place, and control unit 2 stores threshold pressure, and output gas pressure value and threshold pressure are compared backward proportioning valve 9 and send control signal by control unit 2.When output gas pressure value is increased to certain value P1, output flow linearly reduces, and when output gas pressure value is increased to P2 further, output flow is closed completely, is implemented as follows:
(1), as nowPrs≤P1:
targetFlow＝setFlow；
(2), as P1<nowPrs≤P2:
targetFlow＝setFlow*(P3-nowPrs)/(P3-P1)；
(3), as nowPrs>P2:
targetFlow＝0；
Wherein, nowPrs represents current output pressure value, targetFlow represents output flow desired value, namely finally output to the flow value of patient, setFlow is the flow value that user is set by panel, and P1, P2, P3 are the threshold pressure of default, there is following relation: P1<P2<P3, P1 value 30KPA, P2 value 40KPA, P3 value 60KPA in the present embodiment.Output end pressure monitoring means 5 can adopt the 40PC015G2A of Honeywell company.
Claims (4)
1. a carbon dioxide air supply plant, it is characterized in that: comprise snorkel, control unit, display unit, input pressure monitoring unit and output end pressure monitoring means, described snorkel is disposed with input interface, air relief valve, electromagnetic valve, proportioning valve, flow detection unit and output interface; Described control unit is connected with described electromagnetic valve, proportioning valve, flow detection unit, display unit, input pressure monitoring unit and output end pressure monitoring means respectively by holding wire; Described input pressure monitoring unit is connected by holding wire with between described input interface, and described output end pressure monitoring means is connected by holding wire with between described output interface.
2. according to carbon dioxide air supply plant according to claim 1, it is characterized in that: described input pressure monitoring unit is for monitoring the input gas pressure value of input interface, control unit stores preset pressure value range, when described input gas pressure value exceeds described preset pressure value range, control unit sends electromagnetic valve described in signal at stop and described proportioning valve.
3. according to carbon dioxide air supply plant according to claim 1, it is characterized in that: the present flow rate value of the real-time detected gas of flow detection unit, and present flow rate value is sent into control unit, control unit stores preset flow value, when present flow rate value exceeds described preset flow value, control unit sends control signal to proportioning valve.
4. according to carbon dioxide air supply plant according to claim 1, it is characterized in that: described output end pressure monitoring means is for monitoring the output gas pressure value of output interface, control unit stores threshold pressure, and output gas pressure value and threshold pressure are compared backward proportioning valve and send control signal by control unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420418398.6U CN204133903U (en) | 2014-07-28 | 2014-07-28 | Carbon dioxide air supply plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420418398.6U CN204133903U (en) | 2014-07-28 | 2014-07-28 | Carbon dioxide air supply plant |
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| Publication Number | Publication Date |
|---|---|
| CN204133903U true CN204133903U (en) | 2015-02-04 |
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| CN201420418398.6U Active CN204133903U (en) | 2014-07-28 | 2014-07-28 | Carbon dioxide air supply plant |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104096276A (en) * | 2014-07-28 | 2014-10-15 | 重庆金山科技（集团）有限公司 | Carbon dioxide supplying device |
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2014
- 2014-07-28 CN CN201420418398.6U patent/CN204133903U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104096276A (en) * | 2014-07-28 | 2014-10-15 | 重庆金山科技（集团）有限公司 | Carbon dioxide supplying device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Carbon dioxide supplying device Effective date of registration: 20160421 Granted publication date: 20150204 Pledgee: Chongqing Three Gorges bank Limited by Share Ltd Jiangbei Branch Pledgor: Chongqing Jinshan Science and Technology Inc. Registration number: 2016500000005 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20171106 Granted publication date: 20150204 Pledgee: Chongqing Three Gorges bank Limited by Share Ltd Jiangbei Branch Pledgor: Chongqing Jinshan Science and Technology Inc. Registration number: 2016500000005 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Carbon dioxide air supply device Effective date of registration: 20210615 Granted publication date: 20150204 Pledgee: Changshou sub branch of Bank of Chongqing Co.,Ltd. Pledgor: Chongqing Jinshan Scinece & Technology (Group) Co.,Ltd. Registration number: Y2021500000022 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |