CN219455197U - Self-generating water meter and generating module thereof - Google Patents

Abstract

The utility model provides a self-generating water meter and a power generation module thereof. The self-generating water meter comprises a shell, an intelligent water meter module and a generating module. The shell is provided with a first cavity and a second cavity, and the second cavity is communicated with the first cavity. The intelligent water meter module is arranged in the first cavity. The power generation module is arranged in the second cavity and comprises a power generator, a first flow guide structure and a power generation impeller, the first flow guide structure comprises a group of first guide vanes, the number of the first guide vanes is 10-60, each first guide vane is provided with a first blade bent angle, the first blade bent angle is 50-75 degrees, the first flow guide structure guides water flow to the power generation impeller, and the power generation impeller rotates to enable the power generator to generate power.

Description

Self-generating water meter and generating module thereof

Technical Field

The utility model belongs to the field of water meters, and particularly relates to a self-generating water meter and a power generation module thereof.

Background

With the development of technology, intelligent water meters are increasingly widely used. Besides recording and electronic display of water consumption, the intelligent water meter can control the water consumption according to convention, automatically complete water cost calculation of step water price, and simultaneously perform functions of water consumption data storage, remote transmission and the like. In order to facilitate the water supply unit to collect the water meter reading of the water terminal, the prior art adopts a mode of combining the traditional mechanical water meter and the intelligent water meter. The intelligent water meter reads the flow measured by the traditional mechanical water meter, and then remotely transmits the corresponding reading to the terminal, so that intelligent remote meter reading is realized. However, the existing intelligent water meter is powered by a built-in storage battery. Because the electric quantity of the storage battery is limited, the structural circuit of the intelligent water meter is still in the quality years sometimes, but the electric quantity of the battery is consumed, so that the storage battery needs to be replaced manually. In practical application, in order to meter reading accuracy, the battery is not consumed, but the battery is replaced manually at regular intervals if the estimated electric quantity of the storage battery is not much. Each time the battery is replaced, special personnel are required to be arranged for replacement, and the dual cost of the battery and manpower is increased. And, the intelligent water meter is easy to generate errors in data in the period of time when the intelligent water meter is powered off and then restarted. In particular, the replaced battery is a great environmental pollution.

To solve the above problems, self-generating water meters have been developed. In the prior art, the method of adding an external micro-engine generally converts the kinetic energy of water flow into electric energy to charge an energy storage device. However, the prior art ignores the additional pressure loss problem created by the newly added micro-generator. New national standard GB/778.1-2007 for water meters specifies: at a given flow rate, the head loss due to the presence of the water meter in the pipe is called pressure loss. Under the condition of water supply, the pressure of the water outlet end of the water meter is smaller than that of the water inlet end. The new standard specifies that the maximum pressure loss of the water meter under rated operating conditions should not exceed 0.063MPa, that is to say that the pressure loss of the water meter under usual flow rates should not exceed 0.063MPa.

The pressure loss is an important parameter of the water meter, and the water meter which does not meet the pressure loss condition cannot be practically used. If the water meter is required to perform self-power generation, the additional power generation module inevitably causes the increase of the pressure loss of the water meter. On the premise of reducing the increase of the pressure loss as much as possible, the power generation under the micro-water flow condition is ensured, and the maximum elbow for commercial popularization and application of the self-power generation water meter is formed.

Disclosure of Invention

The utility model provides a self-generating water meter and a power generation module thereof, which aim to overcome at least one defect in the prior art.

In order to achieve an object of the present utility model, the present utility model provides a self-generating water meter, which includes a housing, an intelligent water meter module and a power generation module. The shell is provided with a first cavity and a second cavity, and the second cavity is communicated with the first cavity. The intelligent water meter module is arranged in the first cavity. The power generation module is arranged in the second cavity and comprises a power generator, a first flow guide structure and a power generation impeller, the first flow guide structure comprises a group of first guide vanes, the number of the first guide vanes is 10-60, each first guide vane is provided with a first blade bent angle, the first blade bent angle is 50-75 degrees, the first flow guide structure guides water flow to the power generation impeller, and the power generation impeller rotates to enable the power generator to generate power.

In one embodiment of the utility model, the power generation impeller comprises a group of power generation blades, the number of the power generation blades is 10-60, each power generation blade is an asymmetric blade, each power generation blade is provided with a second blade bent angle, and the second blade bent angle is 15-40 degrees.

In one embodiment of the utility model, the power generation impeller comprises a group of power generation blades, the number of the power generation blades is 10-60, each power generation blade is a symmetrical blade, each power generation blade is provided with a second blade bent angle, and the second blade bent angle is 0-60 degrees.

In an embodiment of the utility model, the power generation module further includes a second guiding structure, the second guiding structure guides the water flow to the first guiding structure, the second guiding structure includes a set of second guide vanes, the number of the second guide vanes is 10-40, each second guide vane has a blade inclination angle, and the blade inclination angle is 10-60 degrees.

In an embodiment of the present utility model, the second flow guiding structure guides the water flow from top to bottom to the first flow guiding structure, and the first flow guiding structure guides the water flow from top to bottom to the power generation impeller.

In an embodiment of the utility model, the number of second guide vanes is smaller than the number of first guide vanes, and the blade gap of the second guide vanes is larger than the blade gap of the first guide vanes.

In an embodiment of the present utility model, the second cavity is communicated with the first cavity through a through hole, and the aperture of the through hole is substantially consistent with the inner diameter of the external water pipe of the self-generating water meter.

In order to achieve another object of the present utility model, the present utility model further provides a self-generating water meter power generation module, which comprises a power generator, a first diversion structure and a power generation impeller, wherein the first diversion structure comprises a group of first guide vanes, the number of the first guide vanes is 10-60, each first guide vane has a first blade bent angle, the first blade bent angle is 50-75 degrees, the first diversion structure guides water flow to the power generation impeller, and the power generation impeller rotates to generate power.

In an embodiment of the utility model, the power generation module further includes a second guiding structure, the second guiding structure guides the water flow to the first guiding structure, the second guiding structure includes a set of second guide vanes, the number of the second guide vanes is 10-40, each second guide vane has a blade inclination angle, and the blade inclination angle is 10-60 degrees.

In one embodiment of the utility model, the power generation impeller comprises a group of power generation blades, each power generation blade is an asymmetric blade, the number of the power generation blades is 10-40, each power generation blade is provided with a second blade bent angle, and the second blade bent angle is 15-40 degrees.

In one embodiment of the utility model, the power generation impeller comprises a group of power generation blades, the number of the power generation blades is 10-60, each power generation blade is a symmetrical blade, each power generation blade is provided with a second blade bent angle, and the second blade bent angle is 0-60 degrees.

In summary, by arranging the first flow guiding structure and the power generation impeller, the generation of turbulent flow in the second cavity is reduced, the pressure loss is reduced as much as possible, meanwhile, water flow is flushed to the power generation impeller at a specific angle, even if the water flow is very small, the power generation capacity can still be ensured to be enough for the intelligent water meter module, and thus the normal operation (such as remote meter reading and the like) of the intelligent water meter is ensured. The utility model combines the first diversion structure and the power generation impeller, thereby not only ensuring that the pressure loss of the whole self-power generation water meter is within the national standard range, but also ensuring that the self-power generation water meter can still generate power under the condition of small water flow, and enabling the self-power generation water meter to be really commercially utilized and popularized. The self-generating water meter provided by the utility model can automatically start to generate electricity under the condition of low water speed, and the electricity generation is efficient without increasing too much pressure loss.

The foregoing and other objects, features and advantages of the utility model will be apparent from the following more particular description of preferred embodiments, as illustrated in the accompanying drawings.

Drawings

Fig. 1 is a side partial cross-sectional view of a self-generating water meter provided in accordance with an embodiment of the present utility model.

Fig. 2 shows a partial cross-sectional view along the direction A-A in fig. 1.

Fig. 3 is a schematic perspective view of a self-generating water meter according to an embodiment of the utility model.

Fig. 4 is a longitudinal sectional perspective view of a first flow guiding structure and a second flow guiding structure according to an embodiment of the present utility model.

Fig. 5 is a front view of a longitudinal section of a first flow guiding structure and a second flow guiding structure according to an embodiment of the present utility model.

Fig. 6 is a sectional view taken along the direction B-B in fig. 5.

Fig. 7 is a schematic view of a first guide vane according to an embodiment of the utility model.

Fig. 8 is a perspective view of a power generation impeller according to an embodiment of the present utility model.

Fig. 9 is a front view of a power generation impeller according to an embodiment of the present utility model.

Fig. 10 is a schematic view of a power generating blade according to an embodiment of the present utility model.

Fig. 11 is a perspective view of a power generation impeller according to another embodiment of the present utility model.

Fig. 12 is a front view of a power generation impeller according to another embodiment of the present utility model.

Fig. 13 is a schematic view of a power generating blade according to another embodiment of the present utility model.

Detailed Description

As shown in fig. 1-3, the utility model provides a self-generating water meter, which comprises a shell 1, an intelligent water meter module 2 and a power generation module 3. The housing 1 has a first cavity 11 and a second cavity 12, the second cavity 12 communicating with the first cavity 11. The intelligent water meter module 2 is mounted in the first cavity 11. The power generation module 3 is mounted to the second chamber 12. The first cavity 11 and the second cavity 12 are integrally formed. The second chamber 12 communicates with the first chamber 11 through the through hole 13.

The prior art sets the through holes to a small diameter (e.g., 4-6 mm) to increase the water outflow speed so as to more rapidly strike the power generation impeller to increase the power generation. This ensures that the amount of power generated is still at a low flow rate, but omits the problem that the pressure loss increases greatly. In this embodiment, the second cavity 12 and the first cavity 11 are communicated through a large-diameter through hole, so that water flow is ensured to rapidly flow out of the first cavity 11, and blocking is reduced, so that pressure loss is reduced. In this embodiment, the diameter of the through hole is substantially equal to the inner diameter of the external water pipe of the self-generating water meter. For example, the inner diameter of the water pipe is usually 15mm, and the diameter of the through hole of this embodiment is 15mm. The diameter of the through hole is set to be basically equal to the inner diameter of the water pipe, so that the increase of pressure loss in the process of flowing water from the water pipe into the first cavity and then flowing water from the first cavity into the second cavity is reduced to the greatest extent. However, the present utility model does not limit the specific size of the diameter of the through hole 13. In other embodiments, the via diameter may be 12mm, 13mm, 16mm, etc.

The intelligent water meter module 2 comprises a metering module 21, an energy storage module 22 and a data transmission module 23. The metering module 21 includes a metering impeller and a gear set. The energy storage module 22 may be a lithium ion battery or a supercapacitor. The data transmission module 23 is a circuit structure capable of remotely transmitting data through a network. The power generation module 3 supplies power to the energy storage module 22, the energy storage module 22 provides power for the data transmission module 23, and the data transmission module 23 transmits metering data provided by the metering module 21 to the terminal, so that a remote intelligent meter reading function of the self-power generation water meter is realized. The intelligent water meter module 2 may be wholly or partially mounted within the first chamber 11. The specific structure of the intelligent water meter module 2 can adopt the existing intelligent water meter module, and is not described herein.

The power generation module 3 includes a generator 31, a first flow guiding structure 32, and a power generation impeller 33, and the power generation module 3 may be wholly or partially installed in the second chamber 12. As shown in fig. 4 to 7, the first guide structure 32 includes a set of first guide vanes 321, the number of the first guide vanes 321 is 10 to 60, each first guide vane 321 has a first blade bending angle α, the first blade bending angle α is 50 to 75 degrees, the first guide structure 32 guides water flow to the power generation impeller 33, and the power generation impeller 33 rotates so that the power generator 31 generates power. Fig. 7 is a schematic longitudinal cross-sectional view of the first guide vane as seen radially of the first flow guiding structure. As shown in fig. 7, the first blade bending angle α is an included angle between a tangential direction of a central line of the water outlet side of the first guide vane and a central axis X1 of the first flow guiding structure.

As long as the parts are added in the shell, the pressure loss is necessarily increased because the water flow is blocked by each part and various changes are caused. The first guide structure of the embodiment can guide water flow to the power generation impeller at a proper angle by arranging a specific number of first guide vanes and first guide vanes with special angles, and reduce turbulence of the water flow in the second shell as much as possible, so that pressure loss is reduced. In other words, the first flow guiding structure of the embodiment improves the power generation of the power generation impeller on the premise of reducing the pressure loss and the amplification as much as possible.

In the present embodiment, as shown in fig. 8 to 10, the power generation impeller 33 includes a set of power generation blades 331, the number of the power generation blades 331 is 10 to 60, each power generation blade 331 has a second blade angle β, and the second blade angle β is 15 to 40 degrees. Fig. 10 is a schematic longitudinal sectional view of the power generation blade as seen from the radial direction of the power generation impeller. As shown in FIG. 10, the second blade camber angle beta is the tangential direction of the center line of the water outlet side of the blade andthe included angle between the generator impeller axes X2. The power generation impeller of the embodiment can ensure certain power generation under the condition of extremely small water flow speed by arranging a specific number of power generation blades and power generation blades with special angles. In the prior art, a common impeller is adopted as a power generation impeller of the self-generating water meter, when the water flow speed is too small, the self-starting speed is lower than the self-starting speed, and the power generation impeller can not provide enough generated energy. Under the condition, if the homeowner saves water very much, the water meter can not really perform power generation operation by using very small water flow every time. The power generation impeller provided by the present embodiment avoids such a problem. With little increase in pressure loss, 0.5m ³ The impeller can be started to generate electricity at the water speed of/h, and the generated electricity is larger than 1mA. If the impeller in the prior art needs to perform self-starting power generation under the water speed, the aperture of a through hole between the first cavity and the second cavity needs to be reduced, and the aperture is reduced very little so as to improve the water speed in the second cavity, so that the power generation impeller can achieve the rotating speed for providing enough power generation, but the pressure loss is greatly increased. However, the self-generating water meter solves the problem of increasing the pressure loss through the design of the flow guiding structure and the generating impeller.

According to the embodiment, through the combination of the first diversion structure and the power generation impeller, the pressure loss of the whole self-power generation water meter is ensured to be in the national standard range, and the self-power generation water meter is ensured to still generate power under the condition of small water flow, so that the self-power generation water meter can be really applied and popularized commercially.

In the present embodiment, each of the power generation blades 331 is an asymmetric blade, so that the kinetic energy of the water flow impact can be better utilized. However, the present utility model is not limited in any way. In another embodiment, as shown in fig. 11-13, the power generation blades 331 'of the power generation impeller 33' may be symmetrical blades. In this embodiment, the second blade angle β of the power generation blade 331' is 0-60 degrees, and in this embodiment, the second blade angle β is the angle between the tangential direction of the blade tip curve and the symmetry line of the blade center. When beta is 0 degree, the longitudinal section of the second blade is semicircular.

As shown in fig. 4-6, in the present embodiment, the power generation module 3 further includes a second guiding structure 34, where the second guiding structure 34 guides the water flow to the first guiding structure 32, and the second guiding structure 34 includes a set of second guide vanes 341, where the number of the second guide vanes 341 is 10-40, and the second guide vanes 341 have a blade inclination angle γ, and the blade inclination angle γ is 10-60 degrees. In this embodiment, the second guide vane is a tongue-shaped blade, and then the specific shape of the second guide vane is not limited in the present utility model. As shown in fig. 6, the blade inclination angle γ is an angle between the central axis of the second guide vane and the tangential direction of the center circle of the second guide vane.

In the present embodiment, the number of the second guide vanes 341 is smaller than the number of the first guide vanes 321, and the blade gap between the second guide vanes 341 is larger than the blade gap between the first guide vanes 321. Through this kind of setting, the rivers that flow into the second cavity can not receive too much resistance when the beginning bumps into the second water conservancy diversion structure, to the rivers that flow into in the second cavity, the second water conservancy diversion structure is more the effect of reposition of redundant personnel and direction, reduces as far as possible and causes the vortex to the jam of rivers, reduces the promotion of pressure loss as far as possible like this.

In this embodiment, the second flow guiding structure guides the water flow from top to bottom to the first flow guiding structure, and then the first flow guiding structure guides the water flow from top to bottom to all blades of the power generation impeller. In the prior art, water flow transversely and directly rushes to the blades of part of the power generation impeller so as to drive the whole power generation impeller to rotate. In other words, after the water flow comes out of the first cavity, the water flow directly impacts on a plurality of power generation blades of the power generation impeller positioned in the second cavity from left to right, and each impact has only one or a plurality of points. In this embodiment, the water flow is guided to all the blades of all the power generation impellers by the first flow guiding structure and the power generation impeller structure, so that not only the kinetic energy of the water flow is utilized, but also the gravitational potential energy of the water flow is utilized, and the power generation power is improved. However, the present utility model is not limited thereto, and in other embodiments, the first guiding structure may be located below the power generating impeller to guide the water flow to the power generating impeller from bottom to top, and the water flow is guided to all the power generating blades of the power generating impeller although the gravitational potential energy of the water flow is not utilized. Whether above or below, the first flow directing structure may be upstream of the impeller.

In this embodiment, the diameter of the first flow guiding structure is smaller than the diameter of the second flow guiding structure, and the diameter of the first flow guiding structure is larger than the diameter of the power generation impeller. In other words, the diameter is sequentially reduced by the second flow guiding structure, the first flow guiding structure and the power generation impeller. Through the arrangement, water flow is more concentrated after being guided by the guide mechanism, the water flow speed is higher, and certain power generation power is still ensured under the condition of small water flow.

The first flow guiding structure and the second flow guiding structure can guide water flow to stay, so that the flow speed of the water flow is improved, the flow is more regular and smooth, and the generation of turbulent flow and the pressure loss are further reduced. Compared with the existing self-generating water meter, the self-generating water meter adopting the embodiment has the advantage that the pressure loss is directly reduced from more than 100 kpa to 60kpa. The pressure loss of the metering module of the traditional intelligent power generation water meter is about 40kpa, and the power generation effect achieved by increasing more than 100 kpa in the prior art is achieved under the condition that only 20kpa pressure loss is increased.

In summary, the self-generating water meter and the power generation module thereof provided by the utility model can perform self-starting power generation under the condition of low water speed, and are high-efficiency power generation, and the water speed is more than 0.5m ³ The generated current is larger than 1mA at the time of/h without increasing too much pressure loss, so that the self-generating water meter can be really used and popularized commercially.

It should be noted that "above" or "below" as used herein is upper and lower differentiated along the direction of gravity. "above" or "below" in this application is the orientation defined when the dial of the meter is right side up. When the water meter dial is installed downward, the "upper" corresponds to the "lower" and the "lower" corresponds to the "upper". When the water meter is rotated 90 degrees, "above" or "below" corresponds to "left" or "right". The first, second, etc. words are words of description, provided for convenience in describing the technical scheme of the present utility model, and are not specifically defined, but rather are words of general definition, and do not constitute a limiting effect on the technical scheme of the present utility model. The angles described in this application all include two end points. It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other.

Although the utility model has been described with reference to the preferred embodiments, it should be understood that the utility model is not limited thereto, but rather may be modified and varied by those skilled in the art without departing from the spirit and scope of the utility model.

Claims (10)

1. A self-generating water meter, comprising:

the shell is provided with a first cavity and a second cavity, and the second cavity is communicated with the first cavity;

the intelligent water meter module is arranged in the first cavity;

the power generation module is arranged in the second cavity and comprises a generator, a first flow guiding structure and a power generation impeller, the first flow guiding structure comprises a group of first guide vanes, the number of the first guide vanes is 10-60, each first guide vane is provided with a first blade bent angle, the first blade bent angle is 50-75 degrees, the first flow guiding structure guides water flow to the power generation impeller, and the power generation impeller rotates to enable the generator to generate power.

2. The self-generating water meter of claim 1, wherein the power generation impeller comprises a set of power generation blades, the number of power generation blades being 10-60, each power generation blade being an asymmetric blade, each power generation blade having a second blade angle, the second blade angle being 15-40 degrees.

3. The self-generating water meter of claim 1, wherein the power generation impeller comprises a set of power generation blades, the number of power generation blades is 10-60, each power generation blade is a symmetrical blade, each power generation blade has a second blade angle, and the second blade angle is 0-60 degrees.

4. The self-generating water meter of claim 1, wherein the power generation module further comprises a second flow directing structure that directs water flow to the first flow directing structure, the second flow directing structure comprising a set of second vanes, the number of second vanes being 10-40, each second vane having a vane pitch angle of 10-60 degrees.

5. The self-generating water meter of claim 4, wherein the second flow directing structure directs water flow from top to bottom to the first flow directing structure, and wherein the first flow directing structure directs water flow from top to bottom to the generator impeller.

6. The self-generating water meter of claim 1, wherein the second cavity is communicated with the first cavity through a through hole, and the aperture of the through hole is substantially consistent with the inner diameter of an external water pipe of the self-generating water meter.

7. A self-generating water meter power generation module, comprising:

the water flow guiding device comprises a generator, a first guiding structure and a generating impeller, wherein the first guiding structure comprises a group of first guide vanes, the number of the first guide vanes is 10-60, each first guide vane is provided with a first blade bent angle which is 50-75 degrees, the first guiding structure guides water flow to the generating impeller, and the generating impeller rotates to generate electricity.

8. The self-generating water meter power generation module of claim 7, further comprising a second flow guiding structure that guides water flow to the first flow guiding structure, the second flow guiding structure comprising a set of second guide vanes, the number of second guide vanes being 10-40, each second guide vane having a blade pitch angle of 10-60 degrees.

9. The self-generating water meter power generation module of claim 7, wherein the power generation impeller comprises a set of power generation blades, each power generation blade being an asymmetric blade, the number of power generation blades being 10-40, each power generation blade having a second blade angle, the second blade angle being 15-40 degrees.

10. The self-generating water meter power generation module of claim 7, wherein the power generation impeller comprises a set of power generation blades, the number of power generation blades is 10-60, each power generation blade is a symmetrical blade, each power generation blade has a second blade angle, and the second blade angle is 0-60 degrees.