CN204788528U - Ultrasonic wave is flow sensor for calorimeter with water conservancy diversion cross - Google Patents
Ultrasonic wave is flow sensor for calorimeter with water conservancy diversion cross Download PDFInfo
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- CN204788528U CN204788528U CN201520544099.1U CN201520544099U CN204788528U CN 204788528 U CN204788528 U CN 204788528U CN 201520544099 U CN201520544099 U CN 201520544099U CN 204788528 U CN204788528 U CN 204788528U
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Abstract
The utility model discloses an ultrasonic wave is flow sensor for calorimeter with water conservancy diversion cross, including the body, intaking and hold ultrasonic transducer and go out water end (W. E. ) ultrasonic transducer, the lumen of body is flowed the chamber and is gone out the rivers chamber by class chamber that intakes, middle part and constitutes, intake class chamber and play rivers chamber symmetry setting, class intracavity of intaking is equipped with the water conservancy diversion cross, it equals with the width that the horizontal cross -section of the the central axis department in chamber is flowed at the middle part for rectangle, its width to intake the horizontal cross -section of the the central axis department in class chamber, intake the vertical cross -section of the the central axis department in class chamber for trapezoidal, its front end width equals with the width that the vertical cross -section of the the central axis department in chamber is flowed at the middle part that its rear end width equals with the width that the horizontal cross -section of the the central axis department in chamber is flowed at the middle part. The utility model discloses still can guarantee the stability of ultrasonic wave transmission time difference under the lower condition of and the resolution ratio calculator lower in the water velocity, guarantee measuring accuracy.
Description
Technical field
The utility model relates to a kind of improvement of ultrasonic calorimeter flow sensor, specifically a kind of ultrasonic calorimeter flow sensor with water conservancy diversion cross, utilize the tube chamber of water conservancy diversion cross and reducing, to guarantee stability of flow, be supplied to counter more accurately, more stable signal, improve the precision of flow metering.
Background technology
Along with the development of electronic technology and sensor technology, ultrasonic flow sensor is due to its broad quantum, without advantages such as crushing, non-contact type meterings, be used widely in heat supply transformation and energy-saving metering field.The ultrasonic calorimeter flow sensor of current use, be made up of body and ultrasonic transducer, tube chamber is provided with in body, two ultrasonic transducers are located at the two ends of tube chamber respectively, the central axes of two ultrasonic transducers, temperature sensor is provided with at the water side place of body, the section of tube chamber is that rectangle and arc combine, wherein, the effect of ultrasonic transducer is mechanical energy by the converting electric energy of counter, Mechanical Longitudinal Waves is after aqueous medium is propagated, another ultrasonic transducer is caused to vibrate, and vibration mechanical energy is converted into electric energy again by counter reception process, equally, send the ultrasonic transducer of ultrasonic signal at subsequent time also as take over party, in this course, the difference of water velocity can affect the travel-time of Mechanical Longitudinal Waves between two ultrasonic transducers, under the condition that temperature variation is small, when water is static, two travel-times are equal in theory, otherwise it is poor if having time, this mistiming increases along with the increase of water velocity, both mathematical models are monotonically increasing function, a mistiming corresponding water velocity, during temperature change, the increasing function that slope changes can be regarded as.In current calorimeter industry, most of design proposal is all adopt this measurement method for time difference to calculate water velocity.There is a drawback in the method, the counter because any with metering and measuring function has the restriction of resolution.When water velocity is smaller, the mistiming that flow sensor is measured is less, and under the impact of resolution, the undulatory property of this mistiming is comparatively large, can cause the poor stability measured, and fluctuation is comparatively large, and precision is greatly affected, cannot guaranteed performance index.Change of fluid is complicated simultaneously, and be not steady state (SS), the change of flow velocity is diversity, makes the accuracy of measuring increase difficulty.
Summary of the invention
Even if the purpose of this utility model is to provide a kind of when water velocity is little, the propagation time difference measured is not also by the impact that counter resolution is low, to ensure the ultrasonic calorimeter flow sensor with water conservancy diversion cross of measuring accuracy and stability, unstable to solve fluid, the propagation time difference of low discharge little bring the problem that fluctuation is large.
In order to arrive above object, the technical scheme that the utility model adopts: this kind of ultrasonic calorimeter flow sensor with water conservancy diversion cross, comprise body, water inlet end ultrasonic transducer and water side ultrasonic transducer, the front-rear side walls of described body is respectively equipped with water inlet end transducer mounting hole and water side transducer mounting hole, water inlet end ultrasonic transducer is fixedly installed in water inlet end transducer mounting hole, water side ultrasonic transducer is fixedly installed in the transducer mounting hole of water side, the middle part of body is provided with the tube chamber axially arranged, the central axes of water inlet end ultrasonic transducer and water side ultrasonic transducer, it is characterized in that: described tube chamber is by feed water flow chamber, middle part is flowed chamber and is gone out current chamber and forms, the front end face of water inlet end ultrasonic transducer and water side ultrasonic transducer is positioned at stream chamber, middle part, feed water flow chamber with go out current chamber and be symmetrical arranged, water conservancy diversion cross is provided with in described feed water flow chamber, the horizontal section at the central axis place in described feed water flow chamber is rectangle, and its width is equal with the width of the horizontal section at the central axis place in stream chamber, middle part, the vertical cross-section at the central axis place in feed water flow chamber is trapezoidal, and its nose width is equal with the width of the vertical cross-section at the central axis place in stream chamber, middle part, and its rear end width is equal with the width of the horizontal section at the central axis place in stream chamber, middle part, the central axis of water inlet end ultrasonic transducer and water side ultrasonic transducer is crossing with the central axis in stream chamber, middle part, water inlet end ultrasonic transducer front end face is tangent to the outermost surface of the corresponding side in stream chamber, middle part, and equally, water side ultrasonic transducer front end face is tangent to the outermost surface of the corresponding side in stream chamber, middle part.
The rear end front side wall of described body is provided with temperature sensor fixing hole, and temperature sensor is fixedly installed in temperature sensor fixing hole, and the front end of temperature sensor is inserted out in current chamber.
The beneficial effects of the utility model are: compared with the ultrasonic calorimeter flow sensor used at present, the utility model can make current fluid stable, still can ensure the stability of ultrasonic propagation time difference when water velocity is lower and resolution that is counter is lower, ensure that measuring accuracy.
Accompanying drawing explanation
Fig. 1 is structure schematic front view of the present utility model.
Fig. 2 is that schematic diagram is looked on a structure left side of the present utility model.
Fig. 3 is the structure cross-sectional schematic of the utility model along Figure 1A-A.
Fig. 4 is the structure cross-sectional schematic of the utility model along Fig. 2 B-B.
Fig. 5 is the forward sight enlarged diagram of water conservancy diversion cross of the present utility model.
Fig. 6 be water conservancy diversion cross of the present utility model overlook enlarged diagram.
Fig. 7 is that enlarged diagram is looked on the right side of water conservancy diversion cross of the present utility model.
In figure: 1, body; 2, water inlet end transducer mounting hole; 3, water side transducer mounting hole; 4, temperature sensor fixing hole; 5, temperature sensor; 6, water inlet end ultrasonic transducer; 7, water side ultrasonic transducer; 8, water conservancy diversion cross; 9, feed water flow chamber; 10, middle part stream chamber; 11, current chamber is gone out.
Embodiment
The utility model is made with reference to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7.This a kind of ultrasonic calorimeter flow sensor with water conservancy diversion cross, comprise body 1, water inlet end ultrasonic transducer 6 and water side ultrasonic transducer 7, the front-rear side walls of described body 1 is respectively equipped with water inlet end transducer mounting hole 2 and water side transducer mounting hole 3, water inlet end ultrasonic transducer 6 is fixedly installed in water inlet end transducer mounting hole 2, water side ultrasonic transducer 7 is fixedly installed in water side transducer mounting hole 3, the middle part of body 1 is provided with the tube chamber axially arranged, the central axes of water inlet end ultrasonic transducer 6 and water side ultrasonic transducer 7, it is characterized in that: described tube chamber is by feed water flow chamber 9, middle part is flowed chamber 10 and is gone out current chamber 11 and forms, the front end face of water inlet end ultrasonic transducer 6 and water side ultrasonic transducer 7 is positioned at stream chamber 10, middle part, feed water flow chamber 9 with go out current chamber 11 and be symmetrical arranged, water conservancy diversion cross 8 is provided with in described feed water flow chamber 9, the horizontal section at the central axis place in described feed water flow chamber 9 is rectangle, and its width is equal with the width of the horizontal section at the central axis place in stream chamber, middle part 10, the vertical cross-section at the central axis place in feed water flow chamber 9 is trapezoidal, and its nose width is equal with the width of the vertical cross-section at the central axis place in stream chamber, middle part 10, and its rear end width is equal with the width of the horizontal section at the central axis place in stream chamber, middle part 10, the central axis of water inlet end ultrasonic transducer 6 and water side ultrasonic transducer 7 is crossing with the central axis in stream chamber, middle part 10, water inlet end ultrasonic transducer 6 front end face is tangent to the outermost surface of the corresponding side in stream chamber, middle part 10, and equally, water side ultrasonic transducer 7 front end face is tangent to the outermost surface of the corresponding side in stream chamber, middle part 10.
The rear end front side wall of described body 1 is provided with temperature sensor fixing hole 4, and temperature sensor 5 is fixedly installed in temperature sensor fixing hole 4, and the front end of temperature sensor 5 is inserted out in current chamber 11.
Water inlet end ultrasonic transducer 6 and water side ultrasonic transducer 7 are all the technology that existing ultrasonic flow sensor uses, therefore seldom state.
When the utility model normally works, fluid is from the circular port foremost in feed water flow chamber 9, enter in the chamber in feed water flow chamber 9 of reducing, through the guiding of water conservancy diversion cross 8, fluid can accelerate under the effect of the pressure, and the form of fluid also there will be uneven state, fluid can enter in stream chamber 10, middle part stably under the guiding of water conservancy diversion cross, two planes up and down in stream chamber 10, middle part are surface level, former and later two faces are arc-shaped surface, ensure that water inlet end ultrasonic transducer 6 and water side ultrasonic transducer 7 launch ultrasonic signal travel path can not reduce to some extent, the propagation time difference of ultrasonic signal between water inlet end ultrasonic transducer 6 and water side ultrasonic transducer 7 can not be subject to the impact that the resolution of counter processing signals is low, namely measured water velocity is stable, thus guarantee precision.
Claims (2)
1. one kind has the ultrasonic calorimeter flow sensor of water conservancy diversion cross, comprise body (1), water inlet end ultrasonic transducer (6) and water side ultrasonic transducer (7), the front-rear side walls of described body (1) is respectively equipped with water inlet end transducer mounting hole (2) and water side transducer mounting hole (3), water inlet end ultrasonic transducer (6) is fixedly installed in water inlet end transducer mounting hole (2), water side ultrasonic transducer (7) is fixedly installed in water side transducer mounting hole (3), the middle part of body (1) is provided with the tube chamber axially arranged, the central axes of water inlet end ultrasonic transducer (6) and water side ultrasonic transducer (7), it is characterized in that: described tube chamber is by feed water flow chamber (9), middle part is flowed chamber (10) and is gone out current chamber (11) and forms, the front end face of water inlet end ultrasonic transducer (6) and water side ultrasonic transducer (7) is positioned at middle part stream chamber (10), feed water flow chamber (9) with go out current chamber (11) and be symmetrical arranged, water conservancy diversion cross (8) is provided with in described feed water flow chamber (9), the horizontal section at the central axis place of described feed water flow chamber (9) is rectangle, and its width is equal with the width of the horizontal section at the central axis place in stream chamber, middle part (10), the vertical cross-section at the central axis place in feed water flow chamber (9) is trapezoidal, its nose width is equal with the width of the vertical cross-section at the central axis place in stream chamber, middle part (10), and its rear end width is equal with the width of the horizontal section at the central axis place in stream chamber, middle part (10), the central axis of water inlet end ultrasonic transducer (6) and water side ultrasonic transducer (7) is crossing with the central axis in stream chamber, middle part (10), water inlet end ultrasonic transducer (6) front end face is tangent to the outermost surface of the corresponding side in stream chamber, middle part (10), and equally, water side ultrasonic transducer (7) front end face is tangent to the outermost surface of the corresponding side in stream chamber, middle part (10).
2. a kind of ultrasonic calorimeter flow sensor with water conservancy diversion cross according to claim 1, it is characterized in that: the rear end front side wall of described body (1) is provided with temperature sensor fixing hole (4), temperature sensor (5) is fixedly installed in temperature sensor fixing hole (4), and the front end of temperature sensor (5) is inserted out in current chamber (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520544099.1U CN204788528U (en) | 2015-07-27 | 2015-07-27 | Ultrasonic wave is flow sensor for calorimeter with water conservancy diversion cross |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520544099.1U CN204788528U (en) | 2015-07-27 | 2015-07-27 | Ultrasonic wave is flow sensor for calorimeter with water conservancy diversion cross |
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| CN204788528U true CN204788528U (en) | 2015-11-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE112017006535T5 (en) | 2016-12-26 | 2019-10-10 | Weihai Ploumeter Co., Ltd. | Method and apparatus for measuring flow collecting tangential velocity |
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2015
- 2015-07-27 CN CN201520544099.1U patent/CN204788528U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE112017006535T5 (en) | 2016-12-26 | 2019-10-10 | Weihai Ploumeter Co., Ltd. | Method and apparatus for measuring flow collecting tangential velocity |
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| GR01 | Patent grant | ||
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Address after: 271199 No. 009 Fenghuang Road, hi tech Zone, Shandong, Laiwu Patentee after: SHANDONG LICHUANG SCIENCE AND TECHNOLOGY CO., LTD. Address before: 271199 No. 009 Fenghuang Road, hi tech Zone, Shandong, Laiwu Patentee before: Shandong Lichuang Science and Technology Co., Ltd. |