CN219301695U - Water flow sensor - Google Patents
Water flow sensor Download PDFInfo
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- CN219301695U CN219301695U CN202223363804.7U CN202223363804U CN219301695U CN 219301695 U CN219301695 U CN 219301695U CN 202223363804 U CN202223363804 U CN 202223363804U CN 219301695 U CN219301695 U CN 219301695U
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Abstract
The utility model discloses a water flow sensor, which comprises: the valve seat is internally provided with a direct current channel, and a probe hole and a flow blocking piece hole which are communicated with the direct current channel; the outer side surface of the valve seat is provided with a circuit board mounting position; the circuit board assembly is arranged on the circuit board installation position; the choke component is arranged in the direct current channel through a choke hole, and a first detection electrode is arranged in the choke component; the choke component is provided with a choke part with a cross section narrowing along the forward flow direction; the probe assembly is arranged in the direct current channel through the probe hole and is arranged at the downstream side of the flow blocking assembly, and the probe assembly is provided with a second detection electrode; the first and second detection electrodes are connected with the circuit board assembly. According to the utility model, the flow blocking part is used for changing the fluid pressure, and the first detection electrode and the second detection electrode are used for outputting detection signals, so that the measurement of water flow is realized. The utility model has the advantages of simple structure, little influence on water quality, long service life, low running noise, little pressure loss in the system and the like.
Description
Technical Field
The utility model relates to the technical field of flow detection equipment, in particular to a water flow sensor.
Background
The water flow sensor is used for sensing water flow to output pulse signal or current, voltage and other signals, and the output of the pulse signal and the water flow form certain linear proportion, and has corresponding conversion company and comparison curve, so that water control management and flow calculation may be performed, and the heat energy meter may be used to measure the loss of medium energy.
At present, the most common water flow sensor in the market is a vortex type or turbine type water flow sensor, an impeller or a magnetic rotor in the sensor is pushed by water flow, a square wave pulse signal is output through a Hall sensing element, and the pulse is in direct proportion to the water flow. However, such water flow sensor has the following drawbacks:
(1) Because the water quality conditions of different areas are different, in areas with higher impurity content in water, impurities (such as iron, calcification, sand grains and the like) in the water can be adsorbed on the magnetic rotor or the impeller, so that the normal operation of the magnetic rotor or the impeller is influenced, and the sensor is invalid;
(2) The rotor is arranged in the water flow sensor, the problems that the rotating speed of the rotor is too high, the abrasion of the rotor is accelerated and larger noise is generated when the water flow is too large are solved, and meanwhile, the rotor in the water flow sensor also causes pressure loss in a thermodynamic system to increase energy consumption.
In view of this, there is an urgent need to improve the structure of the water flow sensor in the prior art, so as to avoid the influence of impurities in water on the water flow sensor, prolong the service life of the water flow sensor, and reduce the pressure loss in the thermodynamic system.
Disclosure of Invention
The utility model aims to solve the technical problems that the prior vortex type or turbine type water flow sensor has short service life, large noise in the use process and easy pressure loss of a thermodynamic system when applied to the thermodynamic system.
In order to solve the technical problems, the technical scheme adopted by the utility model is as follows:
a water flow sensor comprising:
the valve seat is provided with connecting structures for connecting with the pipeline at two ends respectively; a direct current channel is arranged in the valve seat, and a probe hole and a flow blocking piece hole which are communicated with the direct current channel are formed in the valve seat; the outer side surface of the valve seat is provided with a circuit board installation position, and the probe hole and the flow blocking piece hole are arranged in the circuit board installation position;
the circuit board assembly is arranged on the circuit board installation position;
the choke component is arranged in the direct current channel through the choke hole, and a first detection electrode is arranged in the choke component; the choke assembly is provided with a choke part, and the width of the cross section of the choke part is reduced along the water flow direction;
the probe assembly is arranged in the direct current channel through the probe hole, the probe assembly is arranged on the downstream side of the flow blocking assembly, and the probe assembly is provided with a second detection electrode;
the first detection electrode and the second detection electrode are connected with the circuit board assembly.
In the above technical solution, preferably, the dc channel is provided with a choke groove, and the shape and the size of the choke groove are adapted to the shape and the size of the choke part.
In the above technical solution, preferably, a first electrode cavity is provided in the choke portion, and the first detection electrode is disposed in the first electrode cavity.
In the above technical solution, preferably, the probe assembly includes:
the probe shell comprises a supporting part and a probe part arranged on the bottom surface of the supporting part, a second electrode cavity is arranged in the probe shell, and the lower end of the second electrode cavity penetrates through the supporting part and is arranged in the probe part;
the electrode bracket is arranged in the opening of the second electrode cavity; the second detection electrode is arranged in the second electrode cavity through the electrode bracket.
In the above technical solution, preferably, a seal ring groove is provided on an outer circumferential surface of the supporting portion, and the seal ring is disposed on the supporting portion through the seal ring groove.
In the above technical solution, preferably, the circuit board assembly includes:
the circuit board shell is arranged on the circuit board installation position; the circuit board shell is provided with a circuit board mounting cavity;
the circuit board body is arranged in the circuit board mounting cavity; the circuit board body is provided with a data connector seat, and the insertion end of the data connector seat is arranged on the circuit board shell.
In the above technical solution, preferably, the circuit board mounting position is a supporting platform disposed on an outer circumferential surface of the valve seat, and a plurality of positioning protrusions are disposed on a top surface of the supporting platform;
the bottom surface of the circuit board shell is provided with a plurality of positioning grooves which are matched with the positioning convex parts.
In the above technical scheme, preferably, the circuit board mounting position is provided with a screw fixing portion, the circuit board housing is provided with an ear plate, the ear plate is provided with a screw hole penetrating through the ear plate, and the screw hole is matched with the screw fixing portion.
In the above technical solution, preferably, the circuit board mounting position is a cylinder body disposed on the valve seat, an opening is disposed on a top surface of the cylinder body, and a detachably disposed end cover is disposed on a side surface of the cylinder body;
the circuit board shell is cylindrical, the lower end of the circuit board shell is provided with a diameter reduction part, the outer diameter of the diameter reduction part is matched with the inner diameter of the cylinder, the circuit board shell is arranged on the top surface of the cylinder, and the diameter reduction part is inserted into the cylinder.
In the above technical scheme, preferably, a clamping block protruding outwards is arranged on the outer side surface of the cylinder, a clamping part matched with the clamping block is arranged on the bottom surface of the end cover, a clamping groove is formed by surrounding the clamping part and the outer side surface of the cylinder, and the clamping block is arranged in the clamping groove.
Compared with the prior art, the water flow sensor provided by the utility model has the advantages that the flow pressure difference is formed before and after the flow blocking piece through the flow blocking piece arranged in the water flow channel, and the probe component and the flow blocking component output detection signals according to the flow pressure difference, so that the water quantity passing through the water flow sensor is detected. The water flow sensor provided by the utility model is not provided with the impeller and the rotor, so that the influence of the adsorption of impurities on the detection component on the normal operation of the detection element is effectively avoided, the service life of the water flow sensor is prolonged, and the water flow sensor has the advantages of low noise, low pressure loss and low energy consumption.
Drawings
FIG. 1 is a perspective view of a water flow sensor according to one embodiment of the present utility model;
FIG. 2 is a schematic diagram illustrating the structural separation of a water flow sensor according to an embodiment of the present utility model;
FIG. 3 is a schematic diagram showing a circuit board assembly of a water flow sensor according to an embodiment of the present utility model;
FIG. 4 is a schematic diagram of a circuit board assembly of a water flow sensor according to an embodiment of the present utility model;
FIG. 5 is a schematic view showing the structural separation of the probe assembly according to the present utility model;
FIG. 6 is a schematic cross-sectional view of a water flow sensor according to an embodiment of the present utility model;
FIG. 7 is a perspective view of a water flow sensor according to another embodiment of the present utility model;
FIG. 8 is a schematic diagram showing a structural separation of a water flow sensor according to another embodiment of the present utility model;
FIG. 9 is a schematic cross-sectional view of a water flow sensor according to another embodiment of the present utility model.
The correspondence between the names and the reference numerals of the respective components in fig. 1 to 9 is as follows:
a valve seat 1, a circuit board assembly 2, a choke assembly 3, a probe assembly 4,
the connecting structure 11, the direct current channel 12, the probe hole 13, the choke hole 14, the circuit board mounting position 15, the positioning convex part 16, the end cover 17, the clamping block 18, the clamping part 19,
the flow blocking groove 121,
a circuit board housing 21, a circuit board body 22, a circuit board mounting cavity 23, a data connector base 24, a positioning groove 25, an ear plate 26, a reduced diameter portion 27,
the flow blocking portion 31, the first electrode cavity 32,
a probe housing 41, an electrode holder 42, a second probe electrode 43,
the electrode assembly comprises a supporting part 411, a probe part 412, a second electrode cavity 413, a sealing ring groove 414 and a sealing ring 415.
Detailed Description
The utility model provides a water flow sensor which has the advantages of simple structure, little influence on water quality, long service life, low running noise, low pressure loss in a system and the like. The utility model is described in detail below with reference to the drawings and the detailed description.
As shown in fig. 1 to 9, the water flow sensor provided by the utility model comprises a valve seat 1, a circuit board assembly 2, a flow blocking assembly 3 and a probe assembly 4.
The two ends of the valve seat 1 are respectively provided with a connecting structure 11, and the connecting structures 11 are used for being connected with a pipeline and connected into the pipeline. The form of the connection structure 11 includes, but is not limited to, threads. The valve seat 1 is internally provided with a direct current channel 12, the valve seat 1 is provided with a probe hole 13 and a flow blocking piece hole 14 which are arranged through the side surface of the valve seat 1, and the probe hole 13 and the flow blocking piece hole 14 are communicated with the direct current channel 12. The outer side surface of the valve seat 1 is provided with a circuit board mounting position 15, and the probe hole 13 and the flow blocking piece hole 14 are arranged in the circuit board mounting position 15.
The circuit board assembly 2 includes a circuit board housing 21 and a circuit board body 22, the circuit board housing 21 being disposed on the circuit board mounting location 15, the circuit board housing 21 being provided with a circuit board mounting cavity 23, the circuit board body 22 being mounted in the circuit board mounting cavity 23. The circuit board body 22 is provided with an amplifying circuit of an electric signal. The circuit board body 22 is provided with a data connector 24, and the data connector 24 is used for being connected with components such as a controller and transmitting measurement data to the controller. The insertion end of the data connector 24 is provided on the circuit board housing 21, facilitating connection of wiring to the data connector.
In one embodiment of the present utility model, the circuit board mounting location 15 is a supporting platform disposed on the outer circumferential surface of the valve seat 1, a plurality of positioning protrusions 16 are disposed on the top surface of the supporting platform, a plurality of positioning grooves 25 are disposed on the top surface of the circuit board housing 21, and the positioning grooves 25 are adapted to the positioning protrusions 16, so that the circuit board housing 21 is stably disposed on the supporting platform.
The circuit board mounting position 15 is provided with a screw fixing part, the circuit board housing 21 is provided with an ear plate 26, the ear plate 26 is provided with a screw hole penetrating through the ear plate 26, the screw hole is matched with the screw fixing part, and the screw penetrates through the screw hole to be connected with the screw fixing part so as to fixedly connect the circuit board housing 21 with the circuit board mounting position 15.
In another embodiment of the utility model, the circuit board mounting location 15 is a cylinder body arranged on the valve seat 1, an opening is arranged on the top surface of the cylinder body, and a detachably arranged end cover 17 is arranged on the side surface of the cylinder body. The clamping block 18 which is arranged in an outward protruding mode is arranged on the outer side face of the cylinder body, the clamping portion 19 which is matched with the clamping block 18 is arranged on the bottom face of the end cover 17, the clamping portion 19 and the outer side face of the cylinder body enclose a clamping groove, and the clamping block 18 is arranged in the clamping groove.
The circuit board housing 21 is in a cylindrical shape, the lower end of the circuit board housing 21 is provided with a diameter reduction part 27, the outer diameter of the diameter reduction part 27 is matched with the inner diameter of the cylinder, the circuit board housing 21 is arranged on the top surface of the cylinder, and the diameter reduction part 27 is inserted into the cylinder. The choke assembly 3 and the probe assembly 4 are disposed on the bottom surface of the reduced diameter portion 27.
The choke assembly 3 is arranged in the direct flow channel 12 via a choke bore 14. The choke assembly 3 includes a choke portion 31 and a first detection electrode (not shown). The width of the cross section of the choke part 31 is reduced along the water flow direction, a choke groove 121 is arranged in the direct current channel 12, the shape and the size of the choke groove 121 are matched with those of the lower end of the choke part 31, the lower end of the choke part 31 is arranged in the choke groove 121, and a choke structure is formed in the direct current channel 12. The choke 31 has a first electrode cavity 32, and the first probe electrode is disposed in the first electrode cavity 32 and connected to the circuit board body 22.
The probe assembly 4 is disposed in the direct current channel 12 through the probe hole 13, and the probe assembly 4 is disposed on the downstream side of the choke assembly 3. The probe assembly 4 includes a probe housing 41, an electrode mount 42 and a second probe electrode 43. The probe housing 41 includes a support portion 411 and a probe portion 412, the probe portion 412 is disposed on the support portion 411, a second electrode cavity 413 is disposed in the probe housing 41, and a lower end of the second electrode cavity 413 is disposed in the probe portion 412 through the support portion 411. The outer circumference of the supporting part 411 is provided with a sealing ring groove 414, and the sealing ring 415 is arranged on the supporting part 411 through the sealing ring groove 414 and is used for improving the tightness between the probe assembly 4 and the valve seat 1 and avoiding the leakage of the fluid in the valve seat 1 through the probe hole 13.
The electrode holder 42 is disposed in the opening of the second electrode chamber 413, the second detection electrode 43 is disposed in the second electrode chamber 413 through the electrode holder 42, and the second detection electrode 43 is connected to the circuit board body 22.
The working process of the utility model is as follows:
the water flow sensor is connected into the thermodynamic system through the connecting structures at the two ends of the valve seat 1, wherein one end of the valve seat 1, which is close to the flow blocking assembly 3, is taken as an inlet end, and one end of the valve seat 1, which is close to the probe assembly 4, is taken as an outlet end.
After the water flow sensor is added into the thermodynamic system, water enters the direct-current channel 12, when the water flows through the flow blocking part 31, the water flow is blocked by the flow blocking part 31, the fluid pressure in the direct-current channel 12 changes, and the first detection electrode arranged in the flow blocking part 31 and the second detection motor 43 arranged in the probe shell 41 output different electric signals to the circuit board body 22 according to the water flow fluid pressure. The amplifying circuit provided on the circuit board body 22 amplifies the electric signal and outputs it to the control terminal through the data connector 24 and the data wiring. The control end calculates the fluid flow passing through the water flow sensor according to the flow calculation formula.
Compared with the prior art, the water flow sensor provided by the utility model has the advantages that the flow resistance part arranged in the direct current channel is utilized to change the fluid pressure passing through the flow resistance part, different detection signals are output through the first detection electrode and the second detection electrode, the flow rate of the fluid is calculated, the structure of the water flow sensor is simple, the influence of the water quality of the water flow is small, in the normal working process of the water flow sensor, the working noise of the water flow sensor is small, the working abrasion is low, the pressure loss in a thermodynamic system is small, and the water flow sensor has the advantages of long service life and low energy consumption.
In the utility model, the circuit board shell of the circuit board assembly can be a box-shaped shell arranged on the supporting platform on the outer side surface of the valve seat, and can also be a cylindrical shell arranged in the cylindrical mounting seat on the outer side surface of the valve seat, so that different requirements on the shell of the water flow sensor in different working scenes are met.
The present utility model is not limited to the above-mentioned preferred embodiments, and any person who can learn the structural changes made under the teaching of the present utility model can fall within the scope of the present utility model if the present utility model has the same or similar technical solutions.
Claims (10)
1. A water flow sensor, comprising:
the valve seat is provided with connecting structures for connecting with the pipeline at two ends respectively; a direct current channel is arranged in the valve seat, and a probe hole and a flow blocking piece hole which are communicated with the direct current channel are formed in the valve seat; the outer side surface of the valve seat is provided with a circuit board installation position, and the probe hole and the flow blocking piece hole are arranged in the circuit board installation position;
the circuit board assembly is arranged on the circuit board installation position;
the choke component is arranged in the direct current channel through the choke hole, and a first detection electrode is arranged in the choke component; the choke assembly is provided with a choke part, and the width of the cross section of the choke part is reduced along the water flow direction;
the probe assembly is arranged in the direct current channel through the probe hole, the probe assembly is arranged on the downstream side of the flow blocking assembly, and the probe assembly is provided with a second detection electrode;
the first detection electrode and the second detection electrode are connected with the circuit board assembly.
2. The water flow sensor according to claim 1, wherein the direct current channel is provided with a flow blocking groove, the shape and size of which is adapted to the shape and size of the flow blocking portion.
3. The water flow sensor according to claim 1, wherein a first electrode cavity is provided in the interior of the flow blocking portion, and the first detection electrode is provided in the first electrode cavity.
4. The water flow sensor of claim 1, wherein the probe assembly comprises:
the probe shell comprises a supporting part and a probe part arranged on the bottom surface of the supporting part, a second electrode cavity is arranged in the probe shell, and the lower end of the second electrode cavity penetrates through the supporting part and is arranged in the probe part;
the electrode bracket is arranged in the opening of the second electrode cavity; the second detection electrode is arranged in the second electrode cavity through the electrode bracket.
5. The water flow sensor according to claim 4, wherein a seal ring groove is provided on an outer circumferential surface of the support portion, and a seal ring is provided on the support portion through the seal ring groove.
6. The water flow sensor of claim 1, wherein the circuit board assembly comprises:
the circuit board shell is arranged on the circuit board installation position; the circuit board shell is provided with a circuit board mounting cavity;
the circuit board body is arranged in the circuit board mounting cavity; the circuit board body is provided with a data connector seat, and the insertion end of the data connector seat is arranged on the circuit board shell.
7. The water flow sensor according to claim 6, wherein the circuit board mounting position is a supporting platform arranged on the outer circumferential surface of the valve seat, and a plurality of positioning convex parts are arranged on the top surface of the supporting platform;
the bottom surface of the circuit board shell is provided with a plurality of positioning grooves which are matched with the positioning convex parts.
8. The water flow sensor according to claim 7, wherein the circuit board mounting position is provided with a screw fixing portion, the circuit board housing is provided with an ear plate, the ear plate is provided with a screw hole penetrating through the ear plate, and the screw hole is matched with the screw fixing portion.
9. The water flow sensor according to claim 6, wherein the circuit board mounting position is a cylinder arranged on the valve seat, an opening is arranged on the top surface of the cylinder, and a detachably arranged end cover is arranged on the side surface of the cylinder;
the circuit board shell is cylindrical, the lower end of the circuit board shell is provided with a diameter reduction part, the outer diameter of the diameter reduction part is matched with the inner diameter of the cylinder, the circuit board shell is arranged on the top surface of the cylinder, and the diameter reduction part is inserted into the cylinder.
10. The water flow sensor according to claim 9, wherein a clamping block protruding outwards is arranged on the outer side face of the cylinder body, a clamping portion matched with the clamping block is arranged on the bottom face of the end cover, a clamping groove is formed by the clamping portion and the outer side face of the cylinder body in a surrounding mode, and the clamping block is arranged in the clamping groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223363804.7U CN219301695U (en) | 2022-12-14 | 2022-12-14 | Water flow sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223363804.7U CN219301695U (en) | 2022-12-14 | 2022-12-14 | Water flow sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219301695U true CN219301695U (en) | 2023-07-04 |
Family
ID=86950183
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223363804.7U Active CN219301695U (en) | 2022-12-14 | 2022-12-14 | Water flow sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219301695U (en) |
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2022
- 2022-12-14 CN CN202223363804.7U patent/CN219301695U/en active Active
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