CN2418464Y - Supersonic flow sensor for calorimeter - Google Patents
Supersonic flow sensor for calorimeter Download PDFInfo
- Publication number
- CN2418464Y CN2418464Y CN 00207712 CN00207712U CN2418464Y CN 2418464 Y CN2418464 Y CN 2418464Y CN 00207712 CN00207712 CN 00207712 CN 00207712 U CN00207712 U CN 00207712U CN 2418464 Y CN2418464 Y CN 2418464Y
- Authority
- CN
- China
- Prior art keywords
- transducer
- ultrasonic
- ultrasonic transducers
- probing shell
- calorimeter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model relates to an ultrasonic flow-rate sensor for a household calorimeter. The utility model is composed of a pair of ultrasonic transducers and transducer seats, wherein, the ultrasonic transducers are composed of probe outer casings 3, sound wedges 1, piezoelectric ceramic crystals 2, and output cables 9; the centers of transducer seat bodies are provided with holes 11; outer casings of the ultrasonic transducers are matched with the holes on the transducer seats; a pair of the transducer seats are respectively fixed on a pipeline which needs to be measured; the ultrasonic transducers are arranged in the holes. The pipeline flow rate can be measured by a ' speed difference method ' through a publicly known calculation method. The ultrasonic transducers has the advantages of high transducing sensibility and good corrosion resistance, and has the advantage that the ultrasonic transducers can be installed or replaced with the pressure and without cutting off water supply. The utility model has the characteristics of reasonable structure, high measuring precision, reliable running, easy maintenance, long service life, etc.
Description
The utility model relates to the flow sensor that a kind of calorimeter is used, particularly the ultrasonic flow transducer used of family expenses calorimeter.
In heating system, often need measure the heating load of heating system with calorimeter, existing calorimeter is generally by flow sensor, temperature sensor and converter are formed, flow sensor is used to measure the fluid flow of heating system, temperature sensor is used to measure the temperature difference of supply channel and water return pipeline, converter is handled flow signal and temperature signal, show the heat flow and the temperature difference, the flow sensor of using in the calorimeter all adopts mechanical motion mode to measure flow at present, fragile and the often maintenance of this sensor, fluctuation of service, serviceable life is short.
The utility model purpose provides a kind of calorimeter ultrasonic flow transducer, need not mechanical motion, and reliable, be easy to safeguard that long service life solves the problems referred to above that prior art exists.
The technical solution of the utility model is: constitute the calorimeter ultrasonic flow transducer by a pair of ultrasonic transducer and transducer holder, ultrasonic transducer is made up of probing shell, sound wedge, piezoelectric ceramic wafer, output cable, sound wedge, piezoelectric ceramic wafer closely connect each other, place in the shell, output cable one end is connected with piezoelectric ceramic wafer, the other end stretches out shell, is provided with hole in the middle of the transducer pedestal, and the probing shell of ultrasonic transducer and the hole on the transducer holder are complementary.
Adopt the utility model, a pair of transducer holder is separately fixed on the pipeline that needs to measure, hole and pipeline UNICOM in the middle of the transducer holder, ultrasonic transducer places in the hole, the cable that stretches out shell is connected with known converter, when hot water passes through ultrasonic flow transducer, because there is certain flow velocity in fluid, there are a time difference in hyperacoustic trace (downbeam) travel-time and flyback (countercurrent direction) travel-time, can measure piping flow with " velocity contrast method " by known computing method.Ultrasonic transducer converting sensitivity height, good corrosion resistance, shell protection sound wedge and piezoelectric ceramic wafer can be cut off the water, and band is pressed and is installed or change ultrasonic transducer.
The utlity model has rational in infrastructure, measuring accuracy is high, reliable, be easy to safeguard characteristics such as long service life.
Accompanying drawing 1 is a ultrasonic transducer structural representation among the utility model embodiment.
Accompanying drawing 2 is a probing shell plan structure synoptic diagram among the utility model embodiment
Accompanying drawing 3 is a transducer holder mounting structure synoptic diagram among the utility model embodiment.
Below in conjunction with accompanying drawing, further specify the utility model by embodiment.
In an embodiment, constitute the calorimeter ultrasonic flow transducer by a pair of ultrasonic transducer and transducer holder, ultrasonic transducer is by probing shell 3, sound wedge 1, piezoelectric ceramic wafer 2, output cable 9, clip 4, O-ring seal 5, set nut 6, outlet mouth nut 7, sealing gasket 8 is formed, sound wedge 1, piezoelectric ceramic wafer 2 closely connects each other, place in the probing shell 3, output cable 9 one ends are connected with piezoelectric ceramic wafer, the other end stretches out shell, the spheroid that the head of probing shell scabbles for one side, because the pipeline diameter that family expenses calorimeter sensor is used is smaller, spheroid is beneficial to the fluid proper flow.Clip 4 inside are shoulder hole, and first half diameter and probing shell 3 are complementary, and the diameter in Lower Half hole and the degree of depth prevent the excessive outside recoil that causes of pressure in the pipeline all greater than the diameter of probing shell head spheroid.Clip 4 outsides cooperate with set nut 6, are provided with O-ring seal 5 in the clip, in the outlet mouth nut 7 sealing gasket 8 are arranged, and with probing shell afterbody coupling, output cable 9 therefrom passes.Be provided with hole 11 in the middle of the transducer pedestal 10, the probing shell 3 of ultrasonic transducer is complementary with the hole 11 on the transducer holder.A pair of transducer holder is separately fixed on the pipeline that needs to measure, hole and pipeline UNICOM in the middle of the transducer holder, ultrasonic transducer places in the hole, the cable that stretches out shell is connected with known converter, when hot water passes through ultrasonic flow transducer, because there is certain flow velocity in fluid, there are a time difference in hyperacoustic trace (downbeam) travel-time and flyback (countercurrent direction) travel-time, can measure piping flow with " velocity contrast method " by known computing method.
Claims (3)
1, a kind of calorimeter ultrasonic flow transducer, comprise a pair of ultrasonic transducer and transducer holder in it is characterized in that forming, ultrasonic transducer is made up of probing shell 3, sound wedge 1, piezoelectric ceramic wafer 2, output cable 9, sound wedge 1, piezoelectric ceramic wafer 2 closely connect each other, place in the probing shell 3, output cable 9 one ends are connected with piezoelectric ceramic wafer 2, the other end stretches out probing shell, be provided with hole 11 in the middle of the transducer pedestal 10, the shell of ultrasonic transducer and the hole on the transducer holder are complementary.
2, the calorimeter ultrasonic flow transducer according to claim 1 is characterized in that the spheroid that the head of said probing shell 3 scabbles for one side.
3, according to claim 1 or 2 described calorimeter ultrasonic flow transducers, also have clip 4, O-ring seal 5, set nut 6, outlet mouth nut 7, sealing gasket 8 in it is characterized in that forming, clip 4 inside are shoulder hole, first half diameter and probing shell 3 are complementary, the diameter in Lower Half hole and the degree of depth prevent the excessive outside recoil that causes of pressure in the pipeline all greater than the diameter of probing shell head spheroid.Clip 4 outsides cooperate with set nut 6, are provided with O-ring seal 5 in the clip, in the outlet mouth nut 7 sealing gasket 8 are arranged, and with probing shell afterbody coupling, output cable 9 therefrom passes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00207712 CN2418464Y (en) | 2000-04-05 | 2000-04-05 | Supersonic flow sensor for calorimeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00207712 CN2418464Y (en) | 2000-04-05 | 2000-04-05 | Supersonic flow sensor for calorimeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2418464Y true CN2418464Y (en) | 2001-02-07 |
Family
ID=33575295
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00207712 Expired - Lifetime CN2418464Y (en) | 2000-04-05 | 2000-04-05 | Supersonic flow sensor for calorimeter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2418464Y (en) |
-
2000
- 2000-04-05 CN CN 00207712 patent/CN2418464Y/en not_active Expired - Lifetime
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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 |
Granted publication date: 20010207 |