阅读说明：本技术 直饮水流体计量表及循环供水系统 (Direct drinking water fluid meter and circulating water supply system ) 是由 裴健 宋正荣 于 2021-09-15 设计创作，主要内容包括：本发明涉及一种直饮水流体计量表及循环供水系统,该流体计量表包括壳体,壳体内部连接有进水计量管和回水计量管,进水计量管和回水计量管均包括管体,管体内均连接有整流套管、第一反射片和第二反射片,整流套管位于第一反射片和第二反射片之间,管体上均设置有第一安装孔和第二安装孔,第一安装孔上连接有第一超声波换能器,第二安装孔上连接二超声波换能器,第一反射片位于第一安装孔的下方,第二反射片位于第二安装孔的下方。本发明还公开了一种循环供水系统。本发明能够准确计量直饮水循环供水系统中的用户用水量,具有较高的计量精度。(The invention relates to a direct drinking water fluid meter and a circulating water supply system, wherein the fluid meter comprises a shell, a water inlet metering pipe and a water return metering pipe are connected in the shell, the water inlet metering pipe and the water return metering pipe respectively comprise a pipe body, a rectifying sleeve, a first reflector plate and a second reflector plate are connected in the pipe body, the rectifying sleeve is positioned between the first reflector plate and the second reflector plate, a first mounting hole and a second mounting hole are formed in the pipe body, a first ultrasonic transducer is connected to the first mounting hole, a second ultrasonic transducer is connected to the second mounting hole, the first reflector plate is positioned below the first mounting hole, and the second reflector plate is positioned below the second mounting hole. The invention also discloses a circulating water supply system. The invention can accurately measure the water consumption of users in the direct drinking water circulating water supply system and has higher measuring precision.)

1. A direct drinking water fluid meter is characterized in that: the water inlet metering pipe and the water return metering pipe are connected inside the shell and comprise a pipe body, a rectifying sleeve, a first reflector plate and a second reflector plate are connected inside the pipe body, the rectifying sleeve is located between the first reflector plate and the second reflector plate, a first mounting hole and a second mounting hole are formed in the pipe body, a first ultrasonic transducer is connected to the first mounting hole, a second ultrasonic transducer is connected to the second mounting hole, the first reflector plate is located below the first mounting hole, and the second reflector plate is located below the second mounting hole.

2. A drink-through fluid meter as set forth in claim 1, wherein: the first ultrasonic transducer and the second ultrasonic transducer are both electrically connected with the controller.

3. A drink-through fluid meter as set forth in claim 1, wherein: the pipe body is further provided with a third mounting hole, the third mounting hole is located between the first mounting hole and the second mounting hole, and the third mounting hole is connected with a temperature sensor.

4. A drink-through fluid meter as set forth in claim 1, wherein: the pipe body with the rectifier sleeve pipe adopts the integral type structure.

5. A drink-through fluid meter as set forth in claim 1, wherein: the pipe body with the rectifier sleeve all adopts plastics material.

6. A drink-through fluid meter as set forth in claim 1, wherein: the first reflector plate and the second reflector plate are connected with the inner wall of the tube body through supports, each support comprises an insertion piece, slots are formed in the inner wall of the tube body, and the insertion pieces are inserted into the slots in an inserted mode.

7. A drink-through fluid meter as set forth in claim 6, wherein: the support is characterized by further comprising an installation rod, the first reflector plate or the second reflector plate is connected to the installation rod, the two ends of the installation rod are connected with the insertion pieces, slots are formed in the two sides of the inner wall of the pipe body, the insertion pieces are inserted into the slots in one side of the inner wall of the pipe body at one end of the installation rod, and the insertion pieces are inserted into the slots in the other side of the inner wall of the pipe body at the other end of the installation rod.

8. A drink-through fluid meter as set forth in claim 1, wherein: the first reflector plate and the second reflector plate are both oval.

9. A drink-through fluid meter as set forth in claim 1, wherein: the pipe body is connected with a pressing plate, one end of the pressing plate is connected to the upper portion of the first mounting hole, the other end of the pressing plate is connected to the upper portion of the second mounting hole, a first through hole and a second through hole are formed in the pressing plate and communicated with the first mounting hole, the second through hole is communicated with the second mounting hole, the first ultrasonic transducer is connected with the first through hole, and the second ultrasonic transducer is connected with the second through hole.

10. A recirculating water supply system that utilizes the direct drinking water fluid meter of any one of claims 1-9 for metering, characterized by: including inlet tube and wet return, the end of intaking of inlet tube is connected with water main, the play water end of inlet tube is connected with the branch pipe of registering one's residence, the end of intaking of wet return with the inlet tube is connected, the play water end of wet return with water main is connected, it connects to drink water fluid strapping table directly between inlet tube and the wet return.

Technical Field

The invention relates to the technical field of fluid metering, in particular to a direct drinking water fluid meter and a circulating water supply system.

Background

Along with the improvement of drinking water quality requirements of people, the application of pipeline drinking water systems in cities is more and more popularized. The pipe network design and the measurement mode of the straight drinking water system of pipeline of current residential district adopt following mode usually, the first kind is the mode that adopts fig. 1 to show, this mode is installed fluid meter in indoor, this mode, be unfavorable for checking meter and administrative unit daily management maintenance, the second kind is the mode that adopts fig. 2 to show, this mode is installed fluid meter in the open air, but this mode greatly increased the pipe length that the water pipe was registered one's residence, and this part pipeline can not participate in the circulation, if the user does not use water for a long time, straight drinking water can deteriorate and influence the citation in this part pipeline.

In order to overcome the defects of the two modes, the mode shown in figure 3 can be generally adopted, the fluid meter is arranged in a circulating pipeline in the mode, a plurality of check valves are connected in series on the pipeline, regular backwashing can be carried out, during backwashing, a variable-frequency water supply system automatically switches and realizes that purified water is supplied by a water return pipe and flows back by a water supply pipe, but in the mode, during backwashing, water supply can be interrupted, the requirement of continuous water supply for circulating water supply cannot be met, in addition, the fluid meter is arranged on a water inlet pipe, but the water flow of the water outlet pipe can be influenced by the water return pipe sometimes, so that the water meter cannot accurately measure the water consumption of a user, and the measurement requirement cannot be met.

Disclosure of Invention

Therefore, the technical problem to be solved by the invention is to overcome the defect that the direct drinking water circulating water supply system in the prior art cannot accurately measure the water consumption of users.

In order to solve the technical problem, the invention provides a direct drinking water fluid meter, which comprises a shell, wherein a water inlet metering pipe and a water return metering pipe are connected inside the shell, the water inlet metering pipe and the water return metering pipe both comprise pipe bodies, a rectifying sleeve, a first reflector plate and a second reflector plate are connected inside the pipe bodies, the rectifying sleeve is positioned between the first reflector plate and the second reflector plate, a first mounting hole and a second mounting hole are formed in each pipe body, a first ultrasonic transducer is connected to the first mounting hole, a second ultrasonic transducer is connected to the second mounting hole, the first reflector plate is positioned below the first mounting hole, and the second reflector plate is positioned below the second mounting hole.

In one embodiment of the invention, the first ultrasonic transducer and the second ultrasonic transducer are both electrically connected to the controller.

In an embodiment of the present invention, a third mounting hole is further disposed on the pipe body, the third mounting hole is located between the first mounting hole and the second mounting hole, and a temperature sensor is connected to the third mounting hole.

In one embodiment of the invention, the tube body and the rectifying sleeve are of an integral structure.

In an embodiment of the present invention, the tube body and the rectification sleeve are made of plastic.

In an embodiment of the invention, the first reflector plate and the second reflector plate are both connected with the inner wall of the tube body through a support, the support comprises an insertion piece, the inner wall of the tube body is provided with a slot, and the insertion piece is inserted into the slot.

In an embodiment of the invention, the bracket further includes an installation rod, the first reflector plate or the second reflector plate is connected to the installation rod, the two ends of the installation rod are both connected with the insertion sheet, the two sides of the inner wall of the tube body are both provided with insertion slots, the insertion sheet at one end of the installation rod is inserted into the insertion slot at one side of the inner wall of the tube body, and the insertion sheet at the other end of the installation rod is inserted into the insertion slot at the other side of the inner wall of the tube body.

In one embodiment of the present invention, the first reflective sheet and the second reflective sheet each have an elliptical shape.

In an embodiment of the present invention, the tube body is connected to a pressure plate, one end of the pressure plate is connected to the upper portion of the first mounting hole, the other end of the pressure plate is connected to the upper portion of the second mounting hole, the pressure plate is provided with a first through hole and a second through hole, the first through hole is communicated with the first mounting hole, the second through hole is communicated with the second mounting hole, the first ultrasonic transducer is connected to the first through hole, and the second ultrasonic transducer is connected to the second through hole.

The utility model provides an utilize above-mentioned arbitrary any one straight drinking water fluid meter carry out circulating water supply system who measures, includes inlet tube and wet return, the end of intaking of inlet tube is connected with water main, the play water end of inlet tube is connected with the branch pipe of registering one's residence, the end of intaking of wet return with the inlet tube is connected, the play water end of wet return with water main is connected, straight drinking water fluid meter connects between inlet tube and the wet return.

Compared with the prior art, the technical scheme of the invention has the following advantages:

the fluid meter provided by the invention is simultaneously provided with the water inlet metering pipe and the water return metering pipe, the two metering pipes have better metering consistency, the water consumption of a user in a direct drinking water circulating water supply system can be accurately metered, and the metering precision is higher.

Drawings

In order that the present disclosure may be more readily and clearly understood, reference will now be made in detail to the present disclosure, examples of which are illustrated in the accompanying drawings.

FIG. 1 is a prior art direct drinking water system;

FIG. 2 is another prior art direct pipe drinking water system;

FIG. 3 is another prior art direct pipe drinking water system;

FIG. 4 is a schematic structural diagram of a direct drinking water fluid meter of the present invention;

FIG. 5 is a schematic view of the mounting of the bracket and the first reflector plate (or the second reflector plate) of FIG. 4;

FIG. 6 is a schematic view of the first and second reflection sheets of FIG. 4 mounted in a pipe body;

FIG. 7 is a schematic view of the platen of FIG. 4;

FIG. 8 is a schematic structural view of a circulating water supply system using the fluid meter shown in FIG. 4 for metering;

the specification reference numbers indicate: 1. a water inlet metering pipe; 2. a return water metering pipe; 3. a pipe body; 31. a slot; 4. a rectifying sleeve; 5. a first reflective sheet; 6. a second reflective sheet; 7. a first mounting hole; 8. a second mounting hole; 9. a third mounting hole; 10. a wire; 11. a controller; 12. a support; 121. inserting sheets; 122. mounting a rod; 13. pressing a plate; 131. a first through hole; 132. a second through hole; 133; a third via.

Detailed Description

The present invention is further described below in conjunction with the following figures and specific examples so that those skilled in the art may better understand the present invention and practice it, but the examples are not intended to limit the present invention.

Referring to fig. 4, this embodiment discloses a straight drinking water fluid meter, including the casing (not shown in the figure), casing internal connection has intake metering pipe 1 and return water metering pipe 2, intake metering pipe 1 is the same with return water metering pipe 2's structure, intake metering pipe 1 and return water metering pipe 2 all include body 3, all be connected with rectifier sleeve 4 in the body 3, first reflector plate 5 and second reflector plate 6, rectifier sleeve 4 is located between first reflector plate 5 and the second reflector plate 6, all be provided with first mounting hole 7 and second mounting hole 8 on the body 3, be connected with first ultrasonic transducer on the first mounting hole 7, be connected with second ultrasonic transducer on the second mounting hole 8, first reflector plate 5 is located the below of first mounting hole 7, second reflector plate 6 is located the below of second mounting hole 8.

Wherein, above-mentioned fluid measurement table installs in the circulating water supply pipeline, and intake metering pipe 1 is used for connecting on the inlet tube to measure the discharge in the inlet tube, return water metering pipe 2 is used for connecting on the wet return, with the discharge in the measurement wet return, through the difference of intake metering pipe 1 and the discharge that return water metering pipe 2 counted, reachs user's actual water consumption, thereby can accurately reachd user's actual water consumption.

The rectifying sleeve 4 can play a good rectifying role in fluid inside the pipe to form a better stable fluid measuring state, so that the metering accuracy of fluid flow is improved; and meanwhile, good signal transmission performance and anti-interference performance can be ensured.

Further, the inner diameter of the fairing 4 is less than 18mm, preferably 6.3 mm. The smaller the internal diameter value of the rectifying sleeve 4 is, the larger the formed time difference is during the same flow, which is beneficial to improving the ultrasonic metering precision, but can reduce the transmission signal of ultrasonic waves and reduce the metering reliability, and the experimental demonstration proves that the preferable internal diameter value can guarantee the accurate reliability of metering simultaneously on the premise of guaranteeing the metering reliability.

In one embodiment, the first ultrasonic transducer and the second ultrasonic transducer are electrically connected with the controller 11 through a lead 10, so that the controller 11 controls the first ultrasonic transducer and the second ultrasonic transducer to emit ultrasonic waves, the water flow speed is calculated according to the time difference of the ultrasonic signals during the forward water flow and the backward water flow, the flow of the water inlet metering pipe 1 or the water return metering pipe 2 is calculated according to the water flow speed, and the controller 11 calculates the water consumption of a user by performing difference on the flow of the water inlet metering pipe 1 and the flow of the water return metering pipe 2.

It is understood that the controller 11(PCB board) includes an MCU (micro controller Unit) chip to control the ultrasonic emission of the first ultrasonic transducer and the second ultrasonic transducer and calculate the flow rate, so as to obtain the water consumption of the user.

Further, the controller 11 is also connected to a display to display the water consumption of the user.

The working principle of the fluid meter is as follows: the controller 11 controls the first ultrasonic transducer on the water inlet metering pipe 1 to be used as a transmitting end to transmit an ultrasonic signal, the ultrasonic signal is transmitted along the flowing direction of the fluid in the pipe body 3 after being reflected by the first reflection sheet 5 and meets the second reflection sheet 6, so that the ultrasonic wave is transmitted to the second ultrasonic transducer through the second mounting hole 8, the second ultrasonic transducer converts the ultrasonic signal into an electric signal and transmits the electric signal to the controller 11, the controller 11 measures the time T1 from the transmission of the ultrasonic signal by the first ultrasonic transducer to the reception of the ultrasonic signal by the second ultrasonic transducer, the controller 11 controls the second ultrasonic transducer on the water inlet metering pipe 1 to be used as the transmitting end to transmit the ultrasonic signal, the transmission time T2 from the transmission of the ultrasonic signal by the second ultrasonic transducer to the reception of the ultrasonic signal by the first ultrasonic transducer can be obtained, and the controller 11 can calculate the speed of the fluid flowing through the water inlet flow pipe according to the time difference between T1 and T2, calculating according to the flow rate of the water flowing through the water inlet metering pipe 1; according to the same manner, the controller 11 can obtain the flow passing through the backwater measuring pipe 2, and calculate the difference between the flows of the water inlet measuring pipe 1 and the backwater measuring pipe 2 to obtain the water consumption of the user.

In one of the embodiments, still be provided with third mounting hole 9 on body 3, third mounting hole 9 is located between first mounting hole 7 and the second mounting hole 8, be connected with temperature sensor on the third mounting hole 9, with the temperature of the internal fluid of detection body 3, so that intake metering pipe 1 and return water metering pipe 2 these two metering intraductal volume all carry out accurate compensation, further promote the accuracy of measurement, guarantee the uniformity between the metering pipe, prevent that the water route is too long between two metering pipes, the internal fluid temperature difference of pipeline section is great and cause great measurement difference.

The influence of temperature on ultrasonic metering is reflected in two aspects: on one hand, the propagation speed of the ultrasonic wave in the fluid medium is related to the temperature of the medium, and the speed value influenced by the temperature change of the propagation speed of the ultrasonic wave in the fluid measuring medium can be compensated through the temperature value measured by the temperature sensor, so that the actual propagation speed is obtained, and the calculated water flow is more accurate. On the other hand, the density and viscosity parameters of the fluid are also related to the temperature of the fluid, and the temperature value measured by the temperature sensor can compensate and correct the influence to obtain more approximate actual flow data.

Further, the temperature sensor is also electrically connected to the controller 11, and the controller 11 is configured to automatically perform compensation and correction on the calculated water flow according to the fluid temperature value measured by the temperature sensor, so as to improve the metering accuracy.

In one of them embodiment, body 3 and rectifier sleeve 4 adopt the integral type structure, can improve the machining precision, promote the product uniformity, avoid the installation error that split type equipment brought, and then promote the measurement accuracy of intake metering pipe 1 or return water metering pipe 2 self.

Wherein, the pipe body 3 and the rectifying sleeve 4 are both round hollow pipelines.

In one of them embodiment, body 3 and fairing 4 all adopt plastics material, lightweight design, and difficult emergence corrosion, safety and sanitation more.

In one embodiment, as shown in fig. 5 and 6, the first reflective sheet 5 and the second reflective sheet 6 are connected to the inner wall of the tube 3 through the bracket 12, the bracket 12 includes an insertion sheet 121, the inner wall of the tube 3 is provided with an insertion slot 31, and the insertion sheet 121 is inserted into the insertion slot 31.

In one embodiment, as shown in fig. 5, the bracket 12 further includes a mounting rod 122, the mounting rod 122 is mounted with a corresponding first reflector or second reflector 6, two ends of the mounting rod 122 are both connected with an insertion sheet 121, two sides of the inner wall of the tube 3 are both provided with insertion slots 31, the insertion sheet 121 at one end of the mounting rod 122 is inserted into the insertion slot 31 at one side of the inner wall of the tube 3, and the insertion sheet 121 at the other end of the mounting rod 122 is inserted into the insertion slot 31 at the other side of the inner wall of the tube 3.

Further, the bracket 12 is made of stainless steel.

In one embodiment, the first reflector 5 and the second reflector 6 are both elliptical, which is beneficial to increase the reflection area and improve the signal strength.

Preferably, the reflective areas of the first reflective sheet 5 and the second reflective sheet 6 are both 32mm². The too large area of the reflector plate can generate adverse effect on the flow state of the fluid, and the value can improve the metering precision on the premise of ensuring the signal intensity, and cannot generate adverse effect on the flow state of the fluid.

In one embodiment, as shown in fig. 7, the tube 3 is connected to a pressing plate 13, one end of the pressing plate 13 is connected to the upper portion of the first mounting hole 7, the other end of the pressing plate 13 is connected to the upper portion of the second mounting hole 8, the pressing plate 13 is provided with a first through hole 131 and a second through hole 132, the first through hole 131 is communicated with the first mounting hole 7, the second through hole 132 is communicated with the second mounting hole 8, the first ultrasonic transducer is connected to the first through hole 131, and the second ultrasonic transducer is connected to the second through hole 132. First ultrasonic transducer and second ultrasonic transducer adopt above-mentioned integral type clamp plate 13 fixed, can pinpoint the mounted position and the angle of transducer, promote the product uniformity, reduce the measurement difference that the installation caused.

Further, a third through hole 133 is disposed on the pressure plate 13, and the third through hole 133 is located between the first through hole 131 and the second through hole 132 for connecting the temperature sensor.

In one embodiment, the center-to-center distance between the first mounting hole 7 and the second mounting hole 8 on the tube body 3 is 40-72 mm, preferably 62 mm. The larger the value of the center distance is, the larger the formed time difference is in the same flow, which is beneficial to improving the ultrasonic metering precision, but can reduce the transmission signal of ultrasonic waves and reduce the metering reliability, and the optimal value can guarantee the accurate reliability of metering on the premise of guaranteeing the metering reliability.

The fluid meter of the embodiment is provided with the water inlet metering pipe 1 and the water return metering pipe 2, the two metering pipes have better metering consistency, the self-precision of each metering pipe is higher, the situation that micro flow cannot be metered or the error is larger due to the self-metering error of the two metering pipe sections can be avoided, the metering error of the whole system can be effectively reduced, and the metering precision is improved; the water supply system can support 24-hour uninterrupted circulation, so that the sanitation level of the pipeline is higher; the device can be installed outdoors, and is convenient for the management department to uniformly copy, collect and maintain; the metering is accurate, the starting flow is low, and the stealing prevention and the early warning of pipe network leakage can be realized.

As shown in fig. 8, this embodiment still discloses a circulation water supply system that utilizes above-mentioned straight drinking water fluid strapping table to carry out measurement, this circulation water supply system includes inlet tube and wet return, the end of intaking of inlet tube is connected with water main, the delivery end of inlet tube is connected with the branch pipe of registering one's residence, the end of intaking of wet return is connected with the inlet tube, the delivery end and the water main of wet return are connected, straight drinking water fluid strapping table connects between inlet tube and wet return, also make fluid strapping table's intake metering pipe 1 connect on the inlet tube, return metering pipe 2 connects on the wet return.

Furthermore, a return water flow regulating valve is arranged on a return water pipe of the circulating water supply system and used for regulating the flow of circulating water, so that the flow of the circulating water flowing through the meter is in the optimal accurate metering range of the meter, and the flow rate requirement of the circulating water quality is met, and the flow rate is preferably 10L/h.

In the above-mentioned circulation water supply system, fluid measurement meter can measure the discharge that gets into the branch pipe of registering one's residence at the in-process that the water in the pipeline maintained the circulation flow, the pipeline length that has not only shortened the water pipe and has registered one's residence, and the water supply that circulates also can guarantee quality of water health standard, use single strapping table in addition can obtain the flow difference of intaking metering pipe 1 and return water metering pipe 2, make final system measurement error increase and lead to the lower problem of measurement accuracy because of different strapping tables self error when having avoided using two strapping tables to measure, for example, if respectively set up a strapping table on inlet tube and the wet return, and commonly used strapping table has 2% error (the scope that the country allows), if the strapping table on the inlet tube has + 2% error, there is 2% error on the corresponding wet return 4. The two meters are arranged in the same system, so that the metering error of the system is 4%. The actual error is larger, and even the user can automatically accumulate the meter when no water is used in serious cases; if the error of the strapping table on the inlet tube is-2%, and the error of the last metering pipe of wet return is + 2%, then can lead to this system metering error to be-4%, cause the actual error to be on the small side, can lead to the problem that the unable measurement of user's low discharge water even when serious, and the single fluid meter of this application possesses into water metering pipe 1 and return water metering pipe 2 simultaneously, two metering pipes have better measurement uniformity, can effectively reduce the metering error of overall system, improve the measurement accuracy.

When the fluid meter is used for metering in the circulating water supply system, the flow of direct drinking water in the water inlet pipe is measured by the water inlet metering pipe 1, the flow of direct drinking water in the water return pipe is measured by the water return metering pipe 2, and then the flow used by the household branch pipe, namely the actual water consumption of a user, is obtained according to the difference value of the flow metered by the water inlet metering pipe 1 and the water return metering pipe 2.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications of the invention may be made without departing from the spirit or scope of the invention.