CN202693050U - Ultrasonic flowmeter - Google Patents
Ultrasonic flowmeter Download PDFInfo
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- CN202693050U CN202693050U CN 201220278183 CN201220278183U CN202693050U CN 202693050 U CN202693050 U CN 202693050U CN 201220278183 CN201220278183 CN 201220278183 CN 201220278183 U CN201220278183 U CN 201220278183U CN 202693050 U CN202693050 U CN 202693050U
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- ultrasound examination
- flow meter
- axis
- ultrasonic flow
- signal
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Abstract
The utility model discloses an ultrasonic flowmeter. The ultrasonic flowmeter comprises a tube body; two installation holes are arranged on the tube body; the two installation holes are respectively provided with an ultrasonic detection component; a signal reflecting table is arranged in the tube body; the surface vertical to an axis of the tube body is a transverse section; the axes of the two ultrasonic detection components are inclined to form included angles with respect to the transverse section of the tube body. The ultrasonic flowmeter provided by the utility model is capable of more precisely detecting the flow rate of flowing fluid, reducing the attenuation of signals, decreasing the pressure loss of the flowmeter at the same time and improving the reliability.
Description
Technical field
The utility model relates to a kind of ultrasonic flow and takes into account the ultrasonic flow rate measuring method.
Background technology
Ultrasonic flow meter is to be provided with two installing ports at body, be provided with respectively the ultrasound examination element at two installing port places, in described body, be provided with the signal reflex platform, the ultrasound wave that first ultrasound examination element sends transfers to second ultrasound examination element again by the signal reflex platform, transmit the used time between two ultrasound examination elements according to the distance between two ultrasound examination elements, ultrasonic signal, detect the fluid flow of the body of flowing through in the unit interval.
Generally need in body, to be provided with the signal reflex platform in the body of existing ultrasonic flow meter, first ultrasonic transducer is converted to the ultrasonic vibration signal with electric signal, after the vibration signal that produces enters by first installing port, after first signal reflex platform reflection, in axial direction transfer to second signal reflex platform, after second signal reflex platform reflection, spread out of by second installing port, and by second ultrasonic transducer the ultrasonic vibration signal is converted to electric signal.
Existing structure has following defective:
1, the signal transmission path of this ultrasonic flow meter is " U " font, and ultrasonic signal is the air line distance of single hop in body, can't reflect accurately the mobility status of liquid in the whole section body, and accuracy is affected;
2, existing " U " type structure has larger choked flow piece in flow tube inside, and pipeline is produced the larger pressure loss, if there is impurity the fluid the inside, can cause easily line clogging;
3, because existing ultrasonic flow meter is only measured the air line distance of single hop in body, so, for improving accuracy of detection, the ultrasound examination element needs the shaft core position near body, this will certainly impact the mobile of liquid in the body, increase the weight of the flow-disturbing of liquid, and had influence on the accuracy of measurement.
Another kind of ultrasonic flow meter occurred again afterwards, made ultrasonic signal process Multi reflection in body, by multistage air line distance in the body is detected, to improve the precision that detects;
1, along with the increase of signal reflex number of units amount, the decay of ultrasonic signal is also increasing, if accumulate at the signal reflex platform dust or impurity is arranged, and the decay of its signal will be more obvious, have influence on the reliability of detection;
2, on the other hand, increase along with the quantity of signal reflex platform, consider the needs of reflection angle setting, installation site, there is part signal reflection platform need to be arranged on top or the bottom of body, if the signal reflex platform is located at the top of body, bubble in the body can have influence on the transmission of ultrasonic signal, if the signal reflex platform is located at the bottom of body, the impurity that accumulates on the signal reflex platform also can have influence on the transmission of ultrasonic signal.
So, with regard to existing ultrasonic flow meter, on the one hand, need to increase ultrasonic signal the quantity of straight-line segment of process improve the precision of detection, on the other hand, reduce again the order of reflection of ultrasonic signal, reduce decay and the loss of ultrasonic signal in transmission course, but existing ultrasonic flow meter can't solve this technical problem.
Summary of the invention
Based on this, the utility model is to overcome the defective of prior art, provide a kind of ultrasonic flow to take into account the ultrasonic flow rate measuring method, the utility model can be more accurately detects the flow of the liquid of flowing through, and reduced the decay of signal, also reduced simultaneously the pressure loss of flowmeter, reliability also is improved.
Its technical scheme is as follows:
A kind of ultrasonic flow meter comprises body, is provided with two installing ports at body, is provided with respectively the ultrasound examination element at two installing port places, is provided with the signal reflex platform in described body; Face perpendicular to the body axis is the transversal section, and the axis of two ultrasound examination elements all is slanted angle with respect to the transversal section of described body.
The below describes further technical scheme:
Described body comprises outer tube and inner tube, and inner tube is sheathed in the outer tube, and each signal reflex platform is located at the inwall of inner tube.
Be provided with positioning hole at described outer tube, the place is provided with regulating nail at positioning hole, and the end of regulating nail is pressed on the described inner tube.
Outer wall in described inner tube is provided with the positioning annular groove, and the described positioning nail of this positioning annular groove is corresponding.
The place is provided with mount pad at described installing port, this mount pad comprises installation end and stiff end, the axis of installation end is parallel with the transversal section of described body, and the axis of stiff end and the transversal section of described body are slanted angle, and described ultrasound examination element is located on the stiff end of mount pad.
Also include snap ring, this snap ring comprises pressure ring and at least two card ears, and the installation end place of described mount pad is provided with at least two pickup grooves, and each pickup groove comprises circumferential swivelling chute and the card entry slot that communicates with swivelling chute, and Ka Er is corresponding with pickup groove; The side that exposes at snap ring is provided with at least two dismounting recesses.
Be provided with flange at described ultrasound examination element, between described snap ring and flange, be provided with O-ring seal.
Described signal reflex platform only is two.
Described ultrasound examination element is positioned at the top of the axis of described body, and the center of two described signal reflex platforms is lower than the axis of described body, and the center of two described signal reflex platforms lays respectively at the both sides of the axis of described body.
Angle between the vertical line of described ultrasound examination element and the described transversal section is that 15 degree are to 85 degree.
A kind of ultrasonic flow rate measuring method, first ultrasound examination element sends ultrasonic signal, this ultrasonic signal all is slanted angle with respect to the transversal section of described body, this ultrasound signal transmission is to the signal reflex platform, and reflex to second ultrasound examination element through the signal reflex platform, transmit the used time between two ultrasound examination elements according to the distance between two ultrasound examination elements, ultrasonic signal, detect the flow of the liquid of the body of flowing through in the unit interval.
The ultrasound examination element can be the ultrasonic transducer of commonly using, and its effect is that electric signal is converted to the ultrasonic vibration signal, also the ultrasonic vibration signal can be converted to electric signal.
The below describes advantage or the principle of aforementioned techniques scheme:
1, in testing process, behind first ultrasound examination ultrasonic signal that element sends (this ultrasonic signal can be not parallel or vertical with the body axis), that directly tilts enters in the body, ultrasonic signal need namely not carry out the transmission first time through reflection, when the ultrasonic vibration signal carries out transmission second time (or for the third time transmission) again after signal reflex platform reflection, finally ultrasonic signal is received by second ultrasound examination element; Because two ultrasound examination elements all tilt with respect to body, so, reduced at least by twice signal reflex, reduced the pressure loss, reliability has been mentioned raising, and the transmission path of ultrasonic signal is not parallel with the axis of body, has also improved the precision that detects;
2, body is comprised of inner tube and outer tube, when mounted, first the signal reflex platform is loaded in the inner tube, again inner tube is inserted in outer tube, installs more convenient;
3, the effect of signal reflex platform is that the ultrasonic vibration signal is reflected, so that the ultrasonic vibration signal transfers to second ultrasound examination element accurately from first ultrasound examination element, so, position and the angle of signal reflex platform are extremely important, for guaranteeing the correct installation of signal reflex platform, be provided with positioning hole at outer tube, can regulate the position of inner tube by regulating nail, and then the signal reflex platform in the inner tube regulated, to guarantee the angle of signal reflex platform, inner tube slip has within the outer tube more been avoided in the setting of positioning annular groove on the inner tube;
4, owing to being installed on the body that the ultrasound examination element need to tilt, installation and difficulty of processing are large, are provided with mount pad at body, and the stiff end of mount pad tilts, and can conveniently process, and the installation of ultrasound examination element is also more convenient;
5, when mounted, first the ultrasound examination element is loaded in the mount pad, reinstall snap ring, the dismounting recess that supports into snap ring by instrument rotates, the card ear of snap ring is snapped in the pickup groove, realize the fixing of snap ring, when taking apart, the reverse rotation snap ring can withdraw from snap ring and ultrasound examination is taken out, and the dismounting of ultrasound examination element is more convenient;
6, the flange on the ultrasound examination element cooperates with O-ring seal, avoids occurring leak of liquid, improves waterproof effect;
7, tilt in body owing to the ultrasound examination elements relative, can reduce the quantity of signal reflex platform, when its quantity was two, the transmission route of ultrasonic vibration signal in body was at least two sections straight-line segments, and signal attenuation is few, and the detection effect of ultrasonic flow meter is ideal;
8, the ultrasound examination element is positioned at the top of body axis, and the center of two signal reflex platforms is lower than the body axis and is positioned at the both sides of body axis but not the middle part, has reduced impurity in the body in the accumulating of signal reflex platform, and has improved the reliability that detects;
9, the angle between the vertical line of ultrasound examination element and the described transversal section be 15 the degree to 85 the degree, make things convenient for the setting of signal reflex platform, versatility is stronger.
Description of drawings
Fig. 1 is the outside drawing of the described ultrasonic flow meter of the utility model embodiment;
Fig. 2 is the cut-open view of the described ultrasonic flow meter of the utility model embodiment;
Fig. 3 is the end view of the described ultrasonic flow meter of the utility model embodiment;
Fig. 4 is the signal transmission synoptic diagram of the described ultrasonic flow meter of the utility model embodiment;
Fig. 5 is the mounting structure figure of the described ultrasound examination element of the utility model embodiment;
Fig. 6 is the structural drawing of the described mount pad of the utility model embodiment;
Fig. 7 is the structural drawing of the described snap ring of the utility model embodiment;
Fig. 8 is the partial enlarged drawing of Fig. 6;
Description of reference numerals:
10, body, 11, inner tube, 111, the positioning annular groove, 12, outer tube, 111, installing port, 112, mount pad, 1121, installation end, 1122, stiff end, 1123, pickup groove, 11231, swivelling chute, 11232, card entry slot, 113, snap ring, 1131, pressure ring, 1132, the card ear, 1133, the dismounting recess, 114, positioning hole, 115, regulating nail, 20, the ultrasound examination element, 21, flange, 22, O-ring seal, 30, the signal reflex platform.
Embodiment
The below is elaborated to embodiment of the present utility model:
To shown in Figure 8, a kind of ultrasonic flow meter comprises body 10, is provided with two installing ports 111 at body 10, is provided with respectively ultrasound examination element 20 at two installing port 111 places, is provided with signal reflex platform 30 in described body 10 such as Fig. 1; Face perpendicular to body 10 axis is the transversal section, and the axis of two ultrasound examination elements 20 all is slanted angle with respect to the transversal section of described body 10.
Wherein, described body 10 comprises outer tube 12 and inner tube 11, and inner tube 11 is sheathed in the outer tube 12, and each signal reflex platform 30 is located at the inwall of inner tube 11.Be provided with positioning hole 114 at described outer tube 12,114 places are provided with regulating nail 115 at positioning hole, and the end of regulating nail 115 is pressed on the described inner tube 11.Outer wall in described inner tube 11 is provided with positioning annular groove 111, and these positioning annular groove 111 described positioning nails are corresponding.
111 places are provided with mount pad 112 at described installing port, this mount pad 112 comprises installation end 1121 and stiff end 1122, the axis of installation end 1121 is parallel with the transversal section of described body 10, the transversal section of the axis of stiff end 1122 and described body 10 is slanted angle, and described ultrasound examination element 20 is located on the stiff end 1122 of mount pad 112.Also include snap ring 113, this snap ring 113 comprises pressure ring 1131 and at least two card ears 1132, installation end 1121 places of described mount pad 112 are provided with at least two pickup grooves 1123, each pickup groove 1123 comprises circumferential swivelling chute 11231 and the card entry slot 11232 that communicates with swivelling chute 11231, and card ear 1132 is corresponding with pickup groove 1123; The side that exposes at snap ring 113 is provided with at least two dismounting recesses 1133.Be provided with flange 21 at described ultrasound examination element 20, between described snap ring 113 and flange 21, be provided with O-ring seal 22.
Described signal reflex platform 30 only is two.Described ultrasound examination element 20 is positioned at the top of the axis of described body 10, and the center of two described signal reflex platforms 30 is lower than the axis of described body 10, and the center of two described signal reflex platforms 30 lays respectively at the both sides of the axis of described body 10.Angle between the vertical line of described ultrasound examination element 20 and the described transversal section is that 15 degree are to 85 degree.
In the present embodiment, the ultrasonic flow rate measuring method is as follows: first ultrasound examination element 20 sends ultrasonic signal, this ultrasonic signal all is slanted angle with respect to the transversal section of described body 10, this ultrasound signal transmission is to signal reflex platform 30, and reflex to second ultrasound examination element 20 through signal reflex platform 30, transmit the used time between two ultrasound examination elements 20 according to the distance between two ultrasound examination elements 20, ultrasonic signal, detect the flow of the liquid of the body 10 of flowing through in the unit interval.
Present embodiment has following advantage:
1, in testing process, behind first ultrasound examination element 20 ultrasonic signal that sends (this ultrasonic signal can be not parallel or vertical with body 10 axis), that directly tilts enters in the body 10, ultrasonic signal need namely not carry out the transmission first time through reflection, when the ultrasonic vibration signal carries out transmission second time (or for the third time transmission) again after signal reflex platform 30 reflection, finally ultrasonic signal is received by second ultrasound examination element 20; Because two ultrasound examination elements 20 all tilt with respect to body 10, so, reduced at least by twice signal reflex, reduced the pressure loss, reliability has been mentioned raising, and the transmission path of ultrasonic signal is not parallel with the axis of body 10, has also improved the precision that detects;
2, body 10 is comprised of inner tube 11 and outer tube 12, when mounted, first signal reflex platform 30 is loaded in the inner tube 11, again inner tube 11 is inserted in outer tube 12, installs more convenient;
3, the effect of signal reflex platform 30 is that the ultrasonic vibration signal is reflected, so that the ultrasonic vibration signal transfers to second ultrasound examination element 20 accurately from first ultrasound examination element 20, so, position and the angle of signal reflex platform 30 are extremely important, for guaranteeing the correct installation of signal reflex platform 30, be provided with positioning hole 114 at outer tube 12, can regulate the position of inner tube 11 by regulating nail 115, and then the signal reflex platforms 30 in the inner tube 11 are regulated, to guarantee the angle of signal reflex platform 30, the slip of inner tube 11 in outer tube 12 more avoided in the setting of positioning annular groove 111 on the inner tube 11;
4, because ultrasound examination element 20 needs being installed on the body 10 of inclination, installation and difficulty of processing are large, are provided with mount pad 112 at body 10, and the stiff end 1122 of mount pad 112 tilts, can conveniently process, the installation of ultrasound examination element 20 is also more convenient;
5, when mounted, first ultrasound examination element 20 is loaded in the mount pad 112, reinstall snap ring 113, the dismounting recess 1133 that supports into snap ring 113 by instrument rotates, the card ear 1132 of snap ring 113 is snapped in the pickup groove 1123, realize the fixing of snap ring 113, when taking apart, reverse rotation snap ring 113 can withdraw from snap ring 113 and ultrasound examination is taken out, and the dismounting of ultrasound examination element 20 is more convenient;
6, the flange 21 on the ultrasound examination element 20 cooperates with O-ring seal 22, avoids occurring leak of liquid, improves waterproof effect;
7, owing to ultrasound examination element 20 tilts with respect to body 10, can reduce the quantity of signal reflex platform 30, when its quantity was two, the transmission route of ultrasonic vibration signal in body 10 was at least two sections straight-line segments, and signal attenuation is few, and the detection effect of ultrasonic flow meter is ideal;
8, ultrasound examination element 20 is positioned at the top of body 10 axis, the center of two signal reflex platforms 30 is lower than body 10 axis and is positioned at the both sides of body 10 axis but not the middle part, reduce body 10 interior impurity in the accumulating of signal reflex platform 30, improved the reliability that detects;
9, the angle between the vertical line of ultrasound examination element 20 and the described transversal section be 15 the degree to 85 the degree, make things convenient for the setting of signal reflex platform 30, versatility is stronger.
The above embodiment has only expressed embodiment of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model claim.Should be pointed out that for the person of ordinary skill of the art without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection domain of the present utility model.
Claims (9)
1. a ultrasonic flow meter comprises body, is provided with two installing ports at body, is provided with respectively the ultrasound examination element at two installing port places, is provided with the signal reflex platform in described body; It is characterized in that, be the transversal section perpendicular to the face of body axis, and the axis of two ultrasound examination elements all is slanted angle with respect to the transversal section of described body.
2. ultrasonic flow meter as claimed in claim 1 is characterized in that described body comprises outer tube and inner tube, and inner tube is sheathed in the outer tube, and each signal reflex platform is located at the inwall of inner tube.
3. ultrasonic flow meter as claimed in claim 2 is characterized in that be provided with positioning hole at described outer tube, the place is provided with regulating nail at positioning hole, and the end of regulating nail is pressed on the described inner tube.
4. ultrasonic flow meter as claimed in claim 3 is characterized in that, is provided with the positioning annular groove at the outer wall of described inner tube, and the described positioning nail of this positioning annular groove is corresponding.
5. such as ultrasonic flow meter as described in each in the claim 1 to 4, it is characterized in that, the place is provided with mount pad at described installing port, this mount pad comprises installation end and stiff end, the axis of installation end is parallel with the transversal section of described body, the axis of stiff end and the transversal section of described body are slanted angle, and described ultrasound examination element is located on the stiff end of mount pad.
6. ultrasonic flow meter as claimed in claim 5, it is characterized in that, also include snap ring, this snap ring comprises pressure ring and at least two card ears, the installation end place of described mount pad is provided with at least two pickup grooves, each pickup groove comprises circumferential swivelling chute and the card entry slot that communicates with swivelling chute, and Ka Er is corresponding with pickup groove; The side that exposes at snap ring is provided with at least two dismounting recesses.
7. such as ultrasonic flow meter as described in each in the claim 1 to 4, it is characterized in that described signal reflex platform only is two.
8. ultrasonic flow meter as claimed in claim 5, it is characterized in that, described ultrasound examination element is positioned at the top of the axis of described body, the center of two described signal reflex platforms is lower than the axis of described body, and the center of two described signal reflex platforms lays respectively at the both sides of the axis of described body.
9. ultrasonic flow meter as claimed in claim 5 is characterized in that, the angle between the vertical line of described ultrasound examination element and the described transversal section is that 15 degree are to 85 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220278183 CN202693050U (en) | 2012-06-13 | 2012-06-13 | Ultrasonic flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220278183 CN202693050U (en) | 2012-06-13 | 2012-06-13 | Ultrasonic flowmeter |
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| Publication Number | Publication Date |
|---|---|
| CN202693050U true CN202693050U (en) | 2013-01-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220278183 Expired - Lifetime CN202693050U (en) | 2012-06-13 | 2012-06-13 | Ultrasonic flowmeter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102706399A (en) * | 2012-06-13 | 2012-10-03 | 广州柏诚智能科技有限公司 | Ultrasonic flowmeter and metering method of ultrasonic flowmeter |
-
2012
- 2012-06-13 CN CN 201220278183 patent/CN202693050U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102706399A (en) * | 2012-06-13 | 2012-10-03 | 广州柏诚智能科技有限公司 | Ultrasonic flowmeter and metering method of ultrasonic flowmeter |
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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: Detection method of time difference cross in use for ultrasonic flowmeter Effective date of registration: 20150205 Granted publication date: 20130123 Pledgee: Bank of China Limited by Share Ltd Guangzhou Liwan branch Pledgor: Basic Intelligence Technology Co., Ltd. Registration number: 2015990000110 |
|
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: 510663 Guangzhou City, Guangdong province high tech Industrial Development Zone, Science City Road, No. 182, innovation building, building C1, room tenth, unit 1002 Patentee after: Basic Intelligence Technology Co., Ltd. Address before: 511400, Guangzhou District, Guangdong, Guangzhou hi tech Development Zone, Science Town, science Avenue 182, innovation building, C3 District, unit 803 Patentee before: Basic Intelligence Technology Co., Ltd. |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130123 |