CN201716054U - Measuring sensor for ultrasonic flowmeter - Google Patents
Measuring sensor for ultrasonic flowmeter Download PDFInfo
- Publication number
- CN201716054U CN201716054U CN2010202298243U CN201020229824U CN201716054U CN 201716054 U CN201716054 U CN 201716054U CN 2010202298243 U CN2010202298243 U CN 2010202298243U CN 201020229824 U CN201020229824 U CN 201020229824U CN 201716054 U CN201716054 U CN 201716054U
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- China
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- sensor
- piezoelectric ceramic
- flow meter
- ultrasonic flow
- ceramic piece
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- Expired - Lifetime
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Abstract
The utility method provides a measuring sensor for an ultrasonic flowmeter, comprising a sensor framework, sealant, a rubber washer, a protection wafer and a piezoelectric ceramic wafer, wherein the protection wafer and the piezoelectric ceramic wafer are arranged in the sensor framework, the protection wafer is glued on the piezoelectric ceramic wafer by hard glue, the back surface of the piezoelectric ceramic wafer is in contact with the rubber washer arranged on the sensor framework, and the sealant is arranged in a groove gap inside the measuring sensor for the ultrasonic flowmeter. As the protection wafer and the piezoelectric ceramic wafer are installed in the measuring sensor framework, the protection wafer is glued on the piezoelectric ceramic wafer through the hard glue, the back surface of the piezoelectric ceramic wafer is in contact with the rubber washer installed on the sensor framework, and the groove gap inside the measuring sensor is filled with the sealant, the measuring sensor for the ultrasonic flowmeter can improve the stability of measuring signals, increases the resolution of the ultrasonic flowmeter, and has the advantages of simple sealing method and favorable effect.
Description
Technical field
The utility model relates to a kind of sensor, particularly about a kind of ultrasonic flow meter survey sensor.
Background technology
When ultrasonic beam is propagated in fluid, flowing of fluid will make the travel-time produce subtle change, and the variation in its travel-time is proportional to flow rate of fluid, can obtain flow rate of fluid thus, and then can calculate the flow of certain hour inner fluid.For ultrasonic flow meter, the structure of its survey sensor can exert an influence by the convection cell measuring-signal, is mainly reflected in the aspects such as amplitude, coda wave number and stability of signal.Disclosing a kind of packing in patent No. ZL03131454 " sound matching block; ultrasonic transducer; ultrasonic flow meter and manufacture method thereof " patent documentation is used to transmit and receive sound matching block in hyperacoustic ultrasonic transducer, a kind of ultrasonic sensor is disclosed in patent No. ZL02106676 " ultrasonic sensor; make the method and the ultrasonic flow meter of ultrasonic sensor " patent documentation, a kind of ultrasonic transmitter-receiver is disclosed in patent No. ZL03801370 " ultrasonic transmitter-receiver and ultrasonic flow meter " patent documentation, patent No. ZL200380106979 " ultrasonic transmitter-receiver and manufacture method thereof; and ultrasonic flow meter " a kind of ultrasonic transmitter-receiver is disclosed in the patent documentation.Above-mentioned several sensor production conditional request is strict relatively, the method for making relative complex, and its manufacturing materials also had higher requirements.
The utility model content
In order to overcome above-mentioned the deficiencies in the prior art, the utility model provides a kind of problem that survey sensor signal attenuation and coda wave absorb that solved, and can improve the stability of signal and increase the ultrasonic flow meter survey sensor of the resolving power of ultrasonic flow meter.
The technical scheme that its technical matters that solves the utility model adopts is: a kind of ultrasonic flow meter survey sensor is provided, it comprises the sensor skeleton, fluid sealant, rubber washer, bluff piece and piezoelectric ceramic piece, described bluff piece and piezoelectric ceramic piece are arranged in this sensor skeleton, this bluff piece covers on piezoelectric ceramic piece by hard rubber, this piezoelectric ceramic piece back side contacts with rubber washer on being arranged on the sensor skeleton, and described fluid sealant is arranged on the groove gap place of this ultrasonic flow meter survey sensor inside.
The scheme that the utility model solves further technical matters is: the shaped upper part of this ultrasonic flow meter survey sensor is a truncated cone-shaped, and lower shape is spherical.
The scheme that the utility model solves further technical matters is: described truncated cone-shaped top is provided with and is used to the location and the orientation notch that seal and locate multistage step and be used for this ultrasonic flow meter survey sensor.
The scheme that the utility model solves further technical matters is: described sensor skeleton is provided with draw-in groove, and bluff piece and piezoelectric ceramic piece snap in this sensor skeleton.
The scheme that the utility model solves further technical matters is: the two poles of the earth soldered sensor lead of described piezoelectric ceramic piece, this sensor conductor is drawn from the hole of sensor skeleton.
Compared to prior art, ultrasonic flow meter of the present utility model is installed in the survey sensor skeleton by bluff piece and piezoelectric ceramic piece with survey sensor, bluff piece covers on piezoelectric ceramic piece by hard rubber, the piezoelectric ceramic piece back side contacts with rubber washer on being installed in the survey sensor skeleton, the groove gap filling with sealant of survey sensor inside, can improve the stability of measuring-signal and increase the resolving power of ultrasonic flow meter, encapsulating method is simple and respond well, can anti-elevated pressures, solved the problem that survey sensor signal attenuation and coda wave absorb, can improve the stability of signal and increase the resolving power of ultrasonic flow meter, sealing effectiveness is good simultaneously, long service life.
Description of drawings
Fig. 1 is the structural profile synoptic diagram of ultrasonic flow meter of the present utility model with survey sensor.
Fig. 2 is the scheme of installation of ultrasonic flow meter of the present utility model with survey sensor.
Embodiment
Following content be in conjunction with concrete preferred implementation to further describing that the utility model is done, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of ordinary skill in the field, under the prerequisite that does not break away from the utility model design, can also make some simple deduction or replace, all should be considered as belonging to protection domain of the present utility model.
As shown in Figure 1, the utility model provides a kind of ultrasonic flow meter survey sensor, and it comprises sensor skeleton 1, fluid sealant 2, rubber washer 3, bluff piece 4 and piezoelectric ceramic piece 5.
The shaped upper part of this ultrasonic flow meter survey sensor is a truncated cone-shaped, and lower shape is spherical.Described truncated cone-shaped top is provided with multistage step 101 and otch 103.
Described bluff piece 4 and piezoelectric ceramic piece 5 are arranged in this sensor skeleton 1, and this bluff piece 4 covers on piezoelectric ceramic piece 5 by hard rubber, and these piezoelectric ceramic piece 5 back sides contact with rubber washer 3 on being arranged on sensor skeleton 1.Described fluid sealant 2 is arranged on the groove gap place of this ultrasonic flow meter survey sensor inside.These bluff piece 4 one sides are bonding with piezoelectric ceramic piece 5, another side contact measured fluid.
Described piezoelectric ceramic piece 5 is in order to produce and to receive ultrasound wave, and the material of bluff piece 4 is stainless steel or the good plastics of sound translative performance, and it act as protection piezoelectric ceramic piece 5 and is not subjected to fluid cutting and conducts ultrasound wave, and its smooth surface can prevent fouling simultaneously.Described fluid sealant 2 mainly act as sealing, and the tail that can be used for absorbing piezoelectric ceramic piece 5 by bonding piezoelectric ceramic piece 5 and sensor skeleton 1 shakes simultaneously, improves measuring accuracy.
As shown in Figure 2, during use, this ultrasonic flow meter survey sensor uses in pairs, inserts in the flow meter tube relatively.Sensor skeleton 1 shaped upper part is the ladder round platform, and lower shape is a semisphere, and the step of round platform partial design is used for sealing and location, and the otch of She Zhiing is used for the location and the orientation of this ultrasonic flow meter survey sensor simultaneously.
The following describes ultrasonic flow meter and survey sensor mount scheme thereof, at first bluff piece 4 is covered at piezoelectric ceramic piece 5 by hard rubber, at piezoelectric ceramic piece 5 the two poles of the earth soldered sensor leads; Then bluff piece 4 and piezoelectric ceramic piece 5 are snapped in the draw-in groove of sensor skeleton 1, and sensor conductor is drawn from the hole of sensor skeleton 1, place an amount of fluid sealant 2 at piezoelectric ceramic piece 5 back sides then; Rubber washer 3 is put into the groove that the survey sensor skeleton back of the body covers, survey sensor skeleton back of the body lid is pushed sensor skeleton 1 together with rubber washer 3, make it chucking.
Ultrasonic flow meter of the present utility model is installed in the survey sensor skeleton by bluff piece and piezoelectric ceramic piece with survey sensor, bluff piece covers on piezoelectric ceramic piece by hard rubber, the piezoelectric ceramic piece back side contacts with rubber washer on being installed in the survey sensor skeleton, the groove gap filling with sealant of survey sensor inside, can improve the stability of measuring-signal and increase the resolving power of ultrasonic flow meter, encapsulating method is simple and respond well, can anti-elevated pressures, solved the problem that survey sensor signal attenuation and coda wave absorb, can improve the stability of signal and increase the resolving power of ultrasonic flow meter, sealing effectiveness is good simultaneously, long service life.
Claims (5)
1. ultrasonic flow meter survey sensor, it is characterized in that: it comprises the sensor skeleton, fluid sealant, rubber washer, bluff piece and piezoelectric ceramic piece, described bluff piece and piezoelectric ceramic piece are arranged in this sensor skeleton, and this bluff piece covers on piezoelectric ceramic piece by hard rubber, this piezoelectric ceramic piece back side contacts with rubber washer on being arranged on the sensor skeleton, and described fluid sealant is arranged on the groove gap place of this ultrasonic flow meter survey sensor inside.
2. ultrasonic flow meter survey sensor according to claim 1 is characterized in that: the shaped upper part of this ultrasonic flow meter survey sensor is a truncated cone-shaped, and lower shape is spherical.
3. ultrasonic flow meter survey sensor according to claim 2 is characterized in that: described truncated cone-shaped top is provided with and is used to the location and the orientation notch that seal and locate multistage step and be used for this ultrasonic flow meter survey sensor.
4. ultrasonic flow meter survey sensor according to claim 1 is characterized in that: described sensor skeleton is provided with draw-in groove, and bluff piece and piezoelectric ceramic piece snap in this sensor skeleton.
5. ultrasonic flow meter survey sensor according to claim 4 is characterized in that: the two poles of the earth soldered sensor lead of described piezoelectric ceramic piece, this sensor conductor is drawn from the hole of sensor skeleton.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202298243U CN201716054U (en) | 2010-06-18 | 2010-06-18 | Measuring sensor for ultrasonic flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202298243U CN201716054U (en) | 2010-06-18 | 2010-06-18 | Measuring sensor for ultrasonic flowmeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201716054U true CN201716054U (en) | 2011-01-19 |
Family
ID=43462058
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202298243U Expired - Lifetime CN201716054U (en) | 2010-06-18 | 2010-06-18 | Measuring sensor for ultrasonic flowmeter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201716054U (en) |
-
2010
- 2010-06-18 CN CN2010202298243U patent/CN201716054U/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 | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 401, room 9, building two, two software park, Shenzhen Road, Nanshan District science and technology, Guangdong, Shenzhen 518057, China Patentee after: Shenzhen Guangning Industrial Co., Ltd. Address before: 401, room 9, building two, two software park, Shenzhen Road, Nanshan District science and technology, Guangdong, Shenzhen 518057, China Patentee before: Shenzhen Guangning Industrial Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110119 |