CN2255609Y - Medical gas middle-low flow measuring and changing device - Google Patents
Medical gas middle-low flow measuring and changing device Download PDFInfo
- Publication number
- CN2255609Y CN2255609Y CN 96200605 CN96200605U CN2255609Y CN 2255609 Y CN2255609 Y CN 2255609Y CN 96200605 CN96200605 CN 96200605 CN 96200605 U CN96200605 U CN 96200605U CN 2255609 Y CN2255609 Y CN 2255609Y
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- gas
- threeway
- differential pressure
- changing device
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Abstract
The utility model relates to a medical gas middle-low flow measuring and changing device. A gas path assembly, a differential pressure transducer and an amplifier assembly are arranged in an outer shell box body of the measuring and changing device, a digital panel meter is arranged on a cover plate of an outer shell, wherein, the gas path assembly comprises two tees and spiral gas pipes connected with the tees, and the middle interfaces of the two tees are connected with the differential pressure transducer. The transducer can be used for measuring pressure difference between a spiral inlet and a gas outlet, and the transducer is connected with a circuit of the amplifier assembly. Gas flow rate represented by the pressure difference can be converted to real-time flow rate and cumulative flow rate signals and displayed on the digital panel meter.
Description
The utility model relates to a kind of gas flow measurement device, and especially a kind of is the medical oxygen flow measurement device of measuring sensor with the differential pressure pickup.
The measuring method of the gas flow of hospital clinical use now is to utilize output gas flow with buoy jack-up mostly, thereby reaches the purpose of measurement gas flow, as the float type oxygen inhalation apparatus.But this device is a mechanical type direct-reading signal, and can not provide integrated flux, sees unreasonable from the angle of medical economic management.Particularly, this oxygen inhalation apparatus all is to be contained in patient's head of a bed, and the staff has only direct-reading to observe, and can not concentrate and guard, cause easily out of control, lose and to protect phenomenon.
The purpose of this utility model, to be the above-mentioned shortcoming that has flowrator now in order overcoming, the automatic measurement translator that can measure real-time traffic and integrated flux to be provided, and the result is converted into the numeral demonstration, also can be with the measurement result centralized displaying, so that monitoring and automatic management.
The technical solution of the utility model is such: gas circuit assembly, differential pressure pickup and amplifier block are housed in container body of outer cover, digital panel meter is housed on the cover plate of outer casing.Wherein: the gas circuit assembly respectively connects a gas circuit threeway by a spirality tracheae and two ends thereof and is formed.Intermediary interface place two gas circuit threeways connects differential pressure pickup with tracheae, and present embodiment adopts the silicon piezoresistance type differential pressure pickup.When in the tested gas circuit air-flow being arranged, because the flow velocity of gas has positive relation-changing in the pressure reduction at spirality tracheae two ends and the pipe, so the output signal Δ V of differential pressure pickup promptly is the signal of gas flow rate, that is gas flow at that time.The electric signal of sensor is received on the digital panel meter at cover plate place through amplifier block, can show real-time traffic or integrated flux on demand.If desired also can centralized displaying.The requirement different according to gas flow can be selected the differential pressure pickup of different size, and form in the gas, low discharge measurement series transducer.
Below by drawings and Examples the utility model is described in detail.
Fig. 1 sees schematic perspective view outside the utility model
Fig. 2 is the utility model intraware schematic perspective view
Fig. 3 is the gas circuit modular construction synoptic diagram of the utility model
Fig. 4 is the air flow direction synoptic diagram of the utility model
Fig. 5 is the circuit theory synoptic diagram of the utility model
As shown in Figure 1, be provided with cover plate of outer casing 12 on the container body of outer cover 11 of shell 1, digital panel meter 5 is housed on cover plate of outer casing 12, one of container body of outer cover 11 side is provided with cable perforation 111.
Referring to Fig. 2～3, gas circuit assembly 2, differential pressure pickup 3 and amplifier block 4 are housed in the container body of outer cover 11.Wherein: gas circuit assembly 2 comprises inlet threeway 21, outlet threeway 22 and spirality tracheae 23, spirality tracheae one end links with the outlet 212 of inlet threeway 21, the other end links with the inlet 221 of outlet threeway 22, and this spirality tracheae is made by the medical poisonless material.The intermediary interface 214 of inlet threeway 21 is connected differential pressure pickup with the intermediary interface 223 usefulness tracheaes of outlet threeway 22.Container body of outer cover is all stretched out in the outlet 222 of the inlet 211 of inlet threeway 21 and outlet threeway 22, for linking to each other with tested gas circuit.
Fig. 4 is the air flow direction synoptic diagram, and the air-flow in the tested gas circuit flows into tested gas circuit once more through inlet threeway 21, spirality tracheae 23, outlet 3 22 are logical.Arrow is represented the air-flow trend among the figure, and 31 is the responsive diaphragm seal of differential pressure pickup 3.
As shown in Figure 5, differential pressure pickup 3 has 4 circuit junctions, and wherein two contacts are connected with power supply, two contacts connect amplifier 41 in addition, the output termination A/D converter 42 of amplifier 41, the output termination digital wash 5 of A/D converter 42 also can connect digital wash 5 again through integrator 43.
When needs were measured, in tested gas circuit, two threeways 21 that are about to stretch out on tested gas circuit and the shell 1 linked to each other with 22 interface, can finish the measurement of real-time traffic with this device serial connection; Also can finish the measurement of integrated flux on demand.
Present embodiment adopts SPPS-50 type silicon piezoresistance type differential pressure pickup, the measurable flow weight range is 3 liters/minute～60 liters/minute, if adopt SPPS-10, the sensor of SPPS-100 model respectively, then measurement range correspondingly is 1 liter/minute～30 liters/minute, 10 liters/minute～300 liters/minute.Can form the flow measurement transducer series of the various needs of a suitable hospital.
In sum, this shirt novel rational in infrastructure, technology is simple, cost is low, measurement is accurate, and be that numeral shows, can show real-time traffic, also can show integrated flux, can also Centralized Monitoring, be not only applicable to hospital's oxygen therapy or commercial oxygen bar, also can be used for other field as in the gas, the determinator of low discharge.
Claims (1)
1. in the medical gas, the low discharge measurement translator, it is characterized in that: gas circuit assembly (2) is housed in the container body of outer cover (11), differential pressure pickup (3) and amplifier block (4), and cover plate of outer casing (12) is gone up installing digital panel meter (5), wherein: gas circuit assembly (2) is by inlet threeway (21), a spirality tracheae (23) that connects between outlet threeway (22) and this two threeways (21) (22) is formed, the inlet (211) of inlet threeway (21) stretches out container body of outer cover respectively with the outlet (222) of outlet threeway (22), among inlet threeway (21) interface (213) with export threeway (22) among interface (223) be connected differential pressure pickup (3), this sensor (3) electrical output signal Δ V and amplifier block (4) link, and amplifier block (4) connects digital panel meter (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96200605 CN2255609Y (en) | 1996-01-16 | 1996-01-16 | Medical gas middle-low flow measuring and changing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96200605 CN2255609Y (en) | 1996-01-16 | 1996-01-16 | Medical gas middle-low flow measuring and changing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2255609Y true CN2255609Y (en) | 1997-06-04 |
Family
ID=33887126
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96200605 Expired - Fee Related CN2255609Y (en) | 1996-01-16 | 1996-01-16 | Medical gas middle-low flow measuring and changing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2255609Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102506965A (en) * | 2011-12-01 | 2012-06-20 | 于邦仲 | System for calibrating flow sensor |
| CN102506954A (en) * | 2011-12-01 | 2012-06-20 | 于邦仲 | Water removal system of flow sensor |
-
1996
- 1996-01-16 CN CN 96200605 patent/CN2255609Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102506965A (en) * | 2011-12-01 | 2012-06-20 | 于邦仲 | System for calibrating flow sensor |
| CN102506954A (en) * | 2011-12-01 | 2012-06-20 | 于邦仲 | Water removal system of flow sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |