Steady flow water flow sensor

Abstract

The utility model relates to the field of valve bodies, in particular to a steady flow water flow sensor, which comprises a shell with interfaces at two ends, a turbine component arranged in the shell, a sensor for detecting rotation of magnetic blades in the turbine component and attached to the outside of the shell, and a steady flow component arranged in the shell and comprising a fixed part hermetically connected with the shell. A through hole is formed in the middle of the fixing part, a first inner shoulder part is arranged in the shell, the fixing part is limited in the first inner shoulder part, a valve rod is movably arranged in the through hole, one end of the valve rod is open, and an open hole communicated with the opening is formed in the side wall of the valve rod; one end of the valve rod is limited in the through hole through the outer shoulder part, a valve plug is arranged at the other end of the valve rod, a second inner shoulder part is arranged in the shell, and the valve plug can abut against the end face of the second inner shoulder part for sealing. The device comprises a shell with interfaces at two ends, a turbine assembly, a flow stabilizing assembly and the like. The flow stabilizing assembly adopts the form of the fixing piece, the valve rod and the valve plug, the size is reduced, and the overall structure is more simplified.

Description

Technical Field

[0001] The utility model relates to a valve body, in particular to a water flow sensor for stabilizing water flow. Background Art

[0002] With the rapid development of industrial automation and intelligent manufacturing, the demand for accurate measurement and control of fluid flow is growing. As a key measuring device, flow sensors play an important role in many fields such as industrial production, environmental monitoring, and energy management. The flow sensor drives the turbine to rotate through water flow. The turbine blades are equipped with magnetic poles, and the sensor detects changes in the magnetic field to identify the rotation speed. The existing flow stabilization components use an integrated mechanism. After the finished product is installed in the pipe, it is limited for use. The cost of structural solidification is high, and the original volume space in the pipe is small, which greatly affects the water flow cross-section after installation. Utility Model Content

[0003] The utility model provides a steady-flow water flow sensor, which has the advantage of being able to regulate according to water flow temperature and water flow.

[0004] The technical solution of the utility model is: a steady-flow water flow sensor, comprising a shell with interfaces at both ends, a turbine assembly is arranged in the shell, a sensor for detecting the rotation of magnetic blades in the turbine assembly is attached to the outside of the shell, a steady-flow assembly is also arranged in the shell, the steady-flow assembly comprises a fixing member sealed with the shell, a through hole is arranged in the middle of the fixing member, a first inner shoulder is arranged in the shell, the fixing member is limited at the first inner shoulder, a valve stem is movably arranged in the through hole, one end of the valve stem is opened and a side wall is provided with an opening that passes through the opening; one end of the valve stem is limited in the through hole by the outer shoulder, the other end of the valve stem is provided with a valve plug, a second inner shoulder is arranged in the shell, the valve plug can abut against the end face of the second inner shoulder for sealing, and also comprises a memory alloy spring, the memory alloy spring is passed through the valve stem and the two ends respectively abut against the valve plug and the fixing member.

[0005] As one of the preferred solutions for a steady-flow water flow sensor, the turbine assembly includes magnetic blades, which are arranged in a magnetic cage. A vortex guide surface is provided at one end of the water inlet of the magnetic cage, and a first shaft seat for limiting the magnetic blades is provided in the middle of the guide surface; a second shaft seat is provided at one end of the water outlet of the magnetic cage, and the second shaft seat is connected and fixed to the magnetic cage.

[0006] As one of the preferred solutions for a steady flow water flow sensor, the magnetic blade is twisted, and the magnetic blade is a straight blade or a spiral. The spiral direction of the magnetic blade is opposite to the vortex guide surface. After the fluid passes through the vortex guide surface to guide the twist, it directly impacts the twisted magnetic blade, which has a better force direction and is more sensitive to water flow impact.

[0007] As one of the preferred solutions for a steady-flow water flow sensor, a first step is provided in the through hole, a tension ring is clamped in the first step, and the outer shoulder of the valve stem contacts the tension ring in the through hole for limiting.

[0008] As one of the preferred solutions of a steady-flow water flow sensor, a second step is further provided in the through hole of the fixing member, a limiting ring is provided on the second step, and an annular groove of a limiting memory alloy spring is provided on one end surface of the limiting ring.

[0009] As one of the preferred solutions for a steady-flow water flow sensor, a drainage hole is provided at the rear end of the second shaft seat, and steel balls are provided in the first shaft seat and the second shaft seat to reduce the friction between the shaft seat and the end face of the magnetic blade shaft.

[0010] As one of the preferred solutions for a steady-flow water flow sensor, a protrusion is provided in the shell, and also includes an insert tightly fitted on the inner wall of the shell, and the turbine assembly is limited between the protrusion and the insert.

[0011] As one of the preferred solutions for a steady-flow water flow sensor, the interface includes a plug-in plugged into the shell, a sealing ring is used to seal the plug-in and the shell, a limiting hole is also provided on the side of the shell, and also includes a steel wire inserted in the limiting hole, and a groove is provided on the outer wall of the plug-in to hold the steel wire.

[0012] As one of the preferred solutions for a steady-flow water flow sensor, after the plug-in is inserted into the housing, the end face of the plug-in is close to the end face of the insert and the steady-flow component.

[0013] As one of the preferred solutions of a steady flow water flow sensor, it also includes a temperature sensor, and the temperature sensor is located between the steady flow component and the turbine component.

[0014] The beneficial effects of the utility model are:

[0015] 1. The sensor is composed of a shell with interfaces at both ends, a turbine assembly, a flow stabilizing assembly, etc. Among them, the flow stabilizing assembly is designed to control the flow into the water inlet channel when the water inlet pressure changes, so that the flow is stable, and no motor is required, the structure is simple, easy to install and maintain, and the cost is low.

[0016] 2. The sensor also includes unique designs such as magnetic blades and memory alloy springs, which improve the dynamic response accuracy of the sensor and its sensitivity to tiny water flows.

[0017] 3. The fixed part valve stem and valve plug are adopted to reduce the volume, and the fixed part is fixed to the inner wall of the shell through the first step, which is convenient for assembly. The first step, the second step and the flow stabilizing component are arranged in the shell, and the overall structure is simplified. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional diagram of the utility model.

[0019] Figure 2 It is a cross-sectional view of the utility model.

[0020] Figure 3 It is a cross-sectional view of the shell of the utility model.

[0021] Figure 4 This is a cross-sectional view of the turbine assembly of the utility model.

[0022] Figure 5 This is a cross-sectional view of the flow stabilizing component of the utility model.

[0023] Among them: 1. interface; 2. shell; 3. turbine assembly; 31. magnetic blade; 32. sensor; 4. flow stabilizing assembly; 41. fixing piece; 42. through hole; 21. first inner shoulder; 43. valve stem; 431. opening; 432. opening; 44. valve plug; 22. second inner shoulder; 45. memory alloy spring; 32. magnetic cage; 33. vortex guide surface; 34. first shaft seat; 35. second shaft seat; 421. first step; 422. tensioning ring; 423. second step; 423. limiting ring; 351. drain hole; 352. steel ball; 23. protrusion; 24. insert; 5. plug-in; 6. limiting hole; 7. steel wire; 8. groove; 9. temperature sensor. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution in the embodiments of the present application will be described clearly and completely in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments.

[0025] like Figures 1 to 5 As shown: a steady-flow water flow sensor, including a shell with interfaces at both ends, a turbine assembly is arranged in the shell, a sensor for detecting the rotation of magnetic blades in the turbine assembly is attached to the outside of the shell, and a steady-flow assembly is also arranged in the shell, the steady-flow assembly includes a fixing member sealed with the shell, a through hole is arranged in the middle of the fixing member, a first inner shoulder is arranged in the shell, the fixing member is limited at the first inner shoulder, a valve stem is movably arranged in the through hole, one end of the valve stem is opened and the side wall is provided with an opening that passes through the opening; one end of the valve stem is limited in the through hole by the outer shoulder, the other end of the valve stem is provided with a valve plug, a second inner shoulder is arranged in the shell, the valve plug can abut against the end face of the second inner shoulder for sealing, and also includes a memory alloy spring, the memory alloy spring is passed through the valve stem and the two ends respectively abut against the valve plug and the fixing member. The structure of the steady-flow assembly is convenient for assembly and

[0026] In this embodiment, the turbine assembly includes magnetic blades, which are arranged in a magnetic cage. A vortex guide surface is provided at one end of the water inlet of the magnetic cage, and a first shaft seat for limiting the magnetic blades is provided in the middle of the guide surface; a second shaft seat is provided at one end of the water outlet of the magnetic cage, and the second shaft seat is connected and fixed to the magnetic cage.

[0027] In this embodiment, in order to improve the dynamic response accuracy of the sensor and perform sensitive detection of tiny water flows, the magnetic blades can be arranged in a spiral shape.

[0028] In this embodiment, a first step is provided in the through hole, a tension ring is clamped in the first step, and the outer shoulder of the valve stem contacts the tension ring in the through hole to limit the position.

[0029] In this embodiment, a drain hole is provided through the rear end of the second shaft seat, and a steel ball is provided in the second shaft seat to reduce the friction between the shaft seat and the end surface of the magnetic blade shaft.

[0030] In this embodiment, the shaft seat at the water inlet is closed, and a sewage discharge hole is provided at the rear end of the shaft seat at the water outlet. Steel balls are provided in the shaft seat to reduce the friction between the shaft seat and the end face of the magnetic blade shaft.

[0031] In this embodiment, a protrusion is provided in the shell, and the shell also includes an insert tightly fitted on the inner wall of the shell, and the turbine assembly is limited between the protrusion and the insert.

[0032] In this embodiment, the interface includes a plug-in plugged into the shell, a sealing ring is used to seal the plug-in and the shell, a limiting hole is also provided on the side of the shell, and also includes a steel wire inserted in the limiting hole, and a groove for clamping the steel wire is provided on the outer wall of the plug-in.

[0033] In this embodiment, after the plug-in is inserted into the housing, the end surface of the plug-in is close to the insert outside the turbine assembly and the end surface of the flow stabilizing assembly, which effectively prevents the assembly from falling off and failing due to a fault.

[0034] In this embodiment, a temperature sensor is also included, and the temperature sensor is located between the flow stabilizing component and the turbine component.

Claims

1. A steady water flow sensor, comprising a housing with interfaces at both ends, a turbine assembly disposed inside the housing, and a sensor for detecting the rotation of magnetic blades in the turbine assembly attached to the outside of the housing, characterized in that: A flow stabilizing component is also provided in the shell, and the flow stabilizing component includes a fixing part sealed and connected to the shell, a through hole is provided in the middle of the fixing part, a first inner shoulder is provided in the shell, the fixing part is limited in the first inner shoulder, a valve stem is movably provided in the through hole, one end of the valve stem is provided with an opening and a side wall is provided with an opening that passes through the opening; one end of the valve stem is limited in the through hole by the outer shoulder, and the other end of the valve stem is provided with a valve plug, a second inner shoulder is provided in the shell, and the valve plug can abut against the end face of the second inner shoulder for sealing, and also includes a memory alloy spring, the memory alloy spring is passed through the valve stem and the two ends respectively abut against the valve plug and the fixing part.

2. The steady flow water flow sensor according to claim 1, characterized in that: The turbine assembly includes magnetic blades, which are arranged in a magnetic cage. A vortex guide surface is provided at one end of the water inlet of the magnetic cage, and a first shaft seat for limiting the magnetic blades is provided in the middle of the guide surface; a second shaft seat is provided at one end of the water outlet of the magnetic cage, and the second shaft seat is connected and fixed to the magnetic cage.

3. The steady flow water flow sensor according to claim 2, characterized in that: The magnetic blades are straight blades or spiral blades.

4. The steady flow water flow sensor according to claim 1, characterized in that: A first step is arranged in the through hole, a tension ring is clamped in the first step, and the outer shoulder of the valve stem contacts the tension ring in the through hole to limit the position.

5. The steady flow water flow sensor according to claim 4, characterized in that: A second step is also provided in the through hole of the fixing member, and a limiting ring is provided on the second step. An annular groove of a limiting memory alloy spring is provided on one end surface of the limiting ring.

6. The steady flow water flow sensor according to claim 2, characterized in that: A drain hole is provided at the rear end of the second shaft seat. Steel balls are provided in the first shaft seat and the second shaft seat to reduce the friction between the shaft seat and the shaft end surface of the magnetic blade.

7. The steady flow water flow sensor according to claim 1, characterized in that: The shell is provided with a protrusion and also includes an insert tightly fitted on the inner wall of the shell, and the turbine assembly is limited between the protrusion and the insert.

8. The steady flow water flow sensor according to claim 1, characterized in that: The interface includes a plug-in plugged into the shell, the plug-in and the shell are sealed with a sealing ring, a limiting hole is also provided on the side of the shell, and also includes a steel wire inserted in the limiting hole, and the outer side wall of the plug-in is provided with a groove for clamping the steel wire.

9. The steady flow water flow sensor according to claim 8, characterized in that: After the plug-in is inserted into the housing, the end face of the plug-in is close to the end face of the insert and the flow stabilizing component.

10. The steady flow water flow sensor according to any one of claims 2 to 9, characterized in that: A temperature sensor is also included, and the temperature sensor is located between the flow stabilizing assembly and the turbine assembly.

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