Fluid pressure measuring device

Abstract

The application provides a fluid pressure measuring device, which comprises a mounting body, a marker and a piston assembly. The mounting body is provided with a communicating inlet, a mounting cavity and an outlet, and the mounting cavity is provided with an opening. The marker is mounted in the mounting cavity of the mounting body, one end of the marker is a marker end and extends out of the opening, the other end of the marker is a sensing end and is provided with an expansion hole, the expansion hole extends into the marker end, and the periphery of the marker end is provided with a scale observation part. The piston assembly comprises a piston and an elastic member, the piston is telescopically mounted in the expansion hole, one end of the piston is a head part and communicates with the inlet, the other end of the piston is a tail part and extends into the area where the observation part is located, and the elastic member is a piston return force. The fluid pressure measuring device provided by the application has the advantages of simple structure, easy molding and assembly, low cost and high measurement precision.

Description

Technical Field

[0001] This invention relates to the field of fluid pressure measurement technology, and in particular to a fluid pressure measurement device. Background Technology

[0002] Fluid pressure detection devices are widely used in industrial production and daily life. Traditional fluid pressure detection devices mostly employ mechanical structures such as springs and gears or elastic diaphragms, and usually require a mechanical display dial. These designs are not only complex and costly to manufacture, but also generally suffer from limited functionality. To overcome these limitations, this invention proposes a novel fluid pressure measurement structure, aiming to simplify the device's construction, reduce costs, and expand its functionality. Summary of the Invention

[0003] To solve the above-mentioned technical problems, this invention proposes a fluid pressure measurement structure with a simple structure.

[0004] A fluid pressure measuring device includes a mounting body, a marking element, and a piston assembly, wherein,

[0005] The mounting body has a connected inlet, mounting cavity and outlet, and the mounting cavity has an opening.

[0006] The marking element is installed in the mounting cavity of the mounting body. One end of the marking element is the marking end, which extends out of the opening. The other end is the sensing end and is provided with a telescopic hole. The telescopic hole extends into the marking end. The periphery of the marking end is provided with an observation part. The observation part is distributed along the telescopic hole and is provided with a scale next to it, so that the user can easily view the measured fluid pressure value.

[0007] The piston assembly includes a piston and an elastic element. The piston is telescopically mounted within a telescopic hole, with one end being the head, which communicates with the inlet and is directly subjected to fluid pressure. The other end is the tail, extending into the area where the observation section is located. When the end moves to a certain scale value, it indicates the current fluid pressure. The elastic element is also mounted within the telescopic hole and provides a reset force for the piston to move towards the sensing end, preventing the piston from failing to reset and thus ensuring real-time measurement of fluid pressure.

[0008] The fluid pressure measuring device provided by the present invention is installed in a fluid channel, wherein the inlet of the mounting body is connected to the feed channel in the fluid channel, and the outlet of the mounting body is connected to the discharge channel in the fluid channel. After installation, the head of the piston senses the fluid pressure at the inlet and further retracts into the telescopic hole under the action of the fluid pressure. The tail of the piston moves within the observation section and indicates the fluid pressure value through the scale.

[0009] The fluid pressure measuring device provided by this invention adopts a fluid-push piston structure. During use, the fluid pressure can be directly displayed by the simple reciprocating movement distance of the piston. On the one hand, it has the advantages of simple structure, easy molding and assembly, and low cost. On the other hand, it eliminates the need for other conversion structures, preventing fluid pressure flow from being canceled out, thereby improving measurement accuracy. Furthermore, it should be noted that the fluid pressure measuring device provided by this invention also has anti-freeze cracking function. When applied to a liquid channel and the liquid freezes, the piston, through compression of the elastic element, can provide more space for the frozen liquid, preventing the pipe or measuring device from freezing and cracking, further enriching the functionality of the pressure measuring device.

[0010] Preferably, to prevent the end of the telescopic hole from being compressed and affecting the extension and retraction of the piston, the marking end of the marking member is provided with a vent hole, which communicates with the telescopic hole. A sealing ring is provided between the outer periphery of the marking member and the inner wall of the mounting cavity to seal the opening and prevent leakage.

[0011] Preferably, the observation section consists of multiple observation ports, which are connected to the telescopic hole and also constitute the vent hole. The structure is simple and easy to obtain. In use, by observing which observation port the piston end moves to, the corresponding scale value is the currently detected fluid pressure value. Alternatively, the marking element is a transparent element, or the marking element is made of transparent material in the observation section.

[0012] Preferably, the piston includes a piston head and a piston rod, with the piston head forming the head. The telescopic hole is stepped, with the smaller diameter end extending to the marking end of the marking element.

[0013] Preferably, a sealing ring is fitted around the outer periphery of the piston head, and a U-shaped sealing ring is fitted around the outer periphery of the piston rod. The U-shaped sealing ring abuts against the bottom end of the section with the larger diameter of the telescopic hole, and the opening faces the piston head. The elastic element is a spring, which is fitted around the outer periphery of the piston rod and positioned between the U-shaped sealing ring and the piston head.

[0014] Preferably, the outlet is located at the end of the mounting cavity, and the inlet is located around the periphery of the mounting cavity, close to the outlet. To further enrich its functionality, the fluid pressure measuring device also includes a flow control rotor. This rotor is rotatably mounted within the mounting cavity, positioned between the inlet and outlet. The rotor has a connecting channel; the outlet end of the connecting channel is connected to the outlet of the mounting body, and the inlet end is connected to or disconnected from the inlet of the mounting body through rotation. The marking element is rotatably mounted and constitutes an operating element. The sensing end engages with the rotor and drives it to rotate, thus the fluid pressure measuring device also functions as a switching valve or a flow regulating valve. It should be noted that when the inlet and outlet are completely blocked, the fluid pressure measuring device provides the static pressure at the inlet; when the inlet and outlet are connected, the fluid pressure measuring device provides the dynamic pressure at the inlet.

[0015] Preferably, the rotating block includes a stationary valve plate and a moving valve plate. The stationary valve plate is fixedly installed in the mounting cavity (with a concave-convex structure to restrict rotation) and has a water passage hole connecting the inlet and outlet. The moving valve plate is rotatably installed in the mounting cavity and closely attached to the stationary valve plate, and has an adjustment hole. The adjustment hole connects or blocks the inlet and the water passage hole by rotation. At this time, the marking end of the marking element also constitutes the operating handle end of the valve.

[0016] Preferably, there are at least two sets of inlet and connecting channels to increase the fluid throughput.

[0017] Preferably, for installation and fixation, a pressing ring is provided in the outlet, and the marking element and piston assembly are sequentially inserted into the installation body through the outlet and pressed by the pressing ring.

[0018] Preferably, to further enrich functionality, the periphery of the mounting body is provided with a pressure relief port, and the periphery of the marking element is provided with a pressure relief hole. The pressure relief hole communicates with the pressure relief port and the pressure relief hole communicates with the telescopic hole. When the piston is compressed to its limit position by fluid pressure, the pressure relief hole communicates with the inlet. In the non-limit position, the pressure relief hole is blocked from the inlet by the piston. Thus, when the hydraulic pressure in the channel is too high, to avoid pipe rupture or damage to the fluid pressure measuring device, when the piston moves to the extreme position, the fluid pressure measuring device can actively release pressure through the pressure relief hole and the pressure relief port to discharge the fluid.

[0019] As can be seen from the above description of the present invention, the present invention has the following beneficial effects:

[0020] The fluid pressure measuring device provided by this invention adopts a fluid-push piston structure. When in use, the fluid pressure can be directly displayed by the simple reciprocating movement distance of the piston. On the one hand, it has the advantages of simple structure, easy molding and assembly, and low cost. On the other hand, it does not require other conversion structures, which can avoid the fluid pressure flow being canceled, thereby improving the measurement accuracy.

[0021] The fluid pressure measuring device provided by this invention also has an anti-freezing and cracking function. When applied to a liquid channel and the liquid freezes, the piston can provide more space for the frozen liquid by compressing the elastic element, thus avoiding the freezing and cracking of the pipe or measuring device, and further enriching the functions of the pressure measuring device.

[0022] The fluid pressure measuring device provided by the present invention, after being equipped with a rotating block, can function as a switching valve or a flow regulating valve, thus further enriching its functions;

[0023] The fluid pressure measuring device provided by the present invention can actively relieve pressure through the pressure relief hole and pressure relief port when the fluid pressure is overloaded, which can prevent the pipeline from cracking or the fluid pressure measuring device from being damaged. Attached Figure Description

[0024] The accompanying drawings, which are provided to further illustrate the invention and constitute a part of this invention, illustrate exemplary embodiments of the invention and are used to explain the invention, but do not constitute an undue limitation of the invention.

[0025] in:

[0026] Figure 1 An isometric view of a fluid pressure measuring device Figure 1 ;

[0027] Figure 2 An isometric view of a fluid pressure measuring device Figure 2 ;

[0028] Figure 3 An explosion of a fluid pressure measuring device Figure 1 ;

[0029] Figure 4 An explosion of a fluid pressure measuring device Figure 2 ;

[0030] Figure 5 This is a front view of a fluid pressure measuring device;

[0031] Figure 6 This is a side view of a fluid pressure measuring device;

[0032] Figure 7 A cross-section of a fluid pressure measuring device Figure 1;

[0033] Figure 8 A cross-section of a fluid pressure measuring device Figure 2 ;

[0034] Figure 9 A cross-section of a fluid pressure measuring device Figure 3 ;

[0035] Figure 10 A cross-section of a fluid pressure measuring device Figure 4 ;

[0036] Figures 1 to 10 The markings are as follows: Installation body 1, Inlet 11, Installation cavity 12, Opening 121, Outlet 13, Pressure relief port 14, Marking element 2, Marking end 21, Sensing end 22, Telescopic hole 23, Observation section 24, Scale 241, Vent hole 25, Pressure relief hole 26, Piston assembly 3, Piston 31, Piston head 311, Piston rod 312, Elastic element 32, Static valve plate 4, Water passage hole 41, Moving valve plate 5, Adjustment hole 51, Pressing ring 6. Detailed Implementation

[0037] To make the technical problems, technical solutions, and beneficial effects of this invention clearer and more understandable, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0038] Please see Figures 1 to 10 A fluid pressure measuring device includes a mounting body 1, a marking element 2, and a piston assembly 3, wherein,

[0039] The mounting body 1 is provided with a connected inlet 11, a mounting cavity 12 and an outlet 13, and the mounting cavity 12 is provided with an opening 121.

[0040] The marking element 2 is installed in the mounting cavity 12 of the mounting body 1. One end of the marking element 2 is a marking end 21, which extends out from the opening 121. The other end is a sensing end 22 and is provided with a telescopic hole 23. The telescopic hole 23 extends into the marking end 21. The periphery of the marking end 21 is provided with an observation part 24. The observation part 24 is distributed along the telescopic hole 23 and is provided with a scale 241 next to it, so that the user can easily view the measured fluid pressure value.

[0041] The piston assembly 3 includes a piston 31 and an elastic element 32. The piston 31 is telescopically mounted within the telescopic hole 23. One end is the head, which communicates with the inlet 11 and is directly subjected to fluid pressure. The other end is the tail, which extends into the area where the observation section 24 is located. When the end moves to a certain scale value, it indicates the current fluid pressure. The elastic element 32 is also mounted within the telescopic hole 23 and provides a reset force for the piston 31 to move towards the sensing end 22, preventing the piston 31 from failing to reset and thus ensuring real-time measurement of fluid pressure.

[0042] The fluid pressure measuring device provided by the present invention is installed in a fluid channel, wherein the inlet 11 of the mounting body 1 is connected to the feed channel in the fluid channel, and the outlet 13 of the mounting body 1 is connected to the discharge channel in the fluid channel. After installation, the head of the piston 31 senses the fluid pressure at the inlet 11 and further retracts into the telescopic hole 23 under the action of the fluid pressure. The tail of the piston 31 moves within the observation section 24 and indicates the fluid pressure value through the scale.

[0043] Preferably, in order to avoid the end of the telescopic hole 23 being compressed and affecting the telescopic movement of the piston 31, the marking end 21 of the marking member 2 is provided with a vent 25, the vent 25 is connected to the telescopic hole 23, and a sealing ring is provided between the outer periphery of the marking member 2 and the inner wall of the mounting cavity 12 to seal the opening 121 and prevent leakage.

[0044] Further optionally, the observation section 24 is composed of multiple observation ports, which are connected to the telescopic hole 23 and also constitute the vent hole 25. The structure is simple and easy to obtain. In use, by observing which observation port the piston 31 end moves to, the corresponding scale value is the currently detected fluid pressure value. Alternatively, the marker 2 is a transparent part, or the marker 2 is made of transparent material in the observation section 24.

[0045] In one embodiment, the piston 31 includes a piston head 311 and a piston rod 312, with the piston head 311 forming a head. The telescopic hole 23 is stepped, with the smaller diameter end extending to the marking end 21 of the marking member 2.

[0046] Optionally, a sealing ring is fitted around the outer periphery of the piston head 311, and a U-shaped sealing ring is fitted around the outer periphery of the piston rod 312. The U-shaped sealing ring abuts against the bottom end of the larger diameter section of the telescopic hole 23, and the opening 121 faces the piston head 311. The elastic element 32 is a spring, fitted around the outer periphery of the piston rod 312, and positioned between the U-shaped sealing ring and the piston head 311.

[0047] To further enrich its functionality, in one embodiment, the outlet 13 is located at the end of the mounting cavity 12, and the inlet 11 is located on the periphery of the mounting cavity 12, close to the outlet 13. The fluid pressure measuring device also includes a flow control rotor, which is rotatably mounted within the mounting cavity 12 and located between the inlet 11 and the outlet 13. The rotor has a connecting channel; the outlet end of the connecting channel is connected to the outlet 13 of the mounting body 1, and the inlet end is connected to or disconnected from the inlet 11 of the mounting body 1 by rotation. The marking element 2 is rotatably mounted and constitutes an operating element; the sensing end 22 engages with the rotor and drives the rotor to rotate, thus the fluid pressure measuring device also functions as a switching valve or a flow regulating valve. It should be noted that when the inlet 11 and outlet 13 are completely blocked, the fluid pressure measuring device provides the static pressure at the inlet 11, such as... Figure 8 When the inlet 11 and outlet 13 are connected, the fluid pressure measuring device provides the dynamic pressure at the inlet 11, such as... Figure 9 .

[0048] Based on the above embodiment, the rotating block includes a stationary valve plate 4 and a moving valve plate 5. The stationary valve plate 4 is fixedly installed in the mounting cavity 12 (with a concave-convex structure to restrict rotation) and has a water passage hole 41 connecting the inlet 11 and the outlet 13. The moving valve plate 5 is rotatably installed in the mounting cavity 12 and closely attached to the stationary valve plate 4, and has an adjustment hole 51. The adjustment hole 51 connects or blocks the inlet 11 and the water passage hole 41 by rotation. At this time, the marking end 21 of the marking element 2 also constitutes the operating handle end of the valve. The water passage hole 41 and the adjustment hole 51 form a connecting channel. In addition, there are at least two sets of inlet 11 and connecting channels, which can increase the fluid throughput.

[0049] Alternatively, to facilitate installation and fixation, a pressing ring 6 is provided inside the outlet 13. The marking element 2 and the piston assembly 3 are sequentially inserted into the installation body 1 through the outlet 13 and pressed by the pressing ring 6.

[0050] In this embodiment, the sensing end 22 of the marker 2 is provided with a protrusion, the moving valve plate 5 is provided with a groove, the sensing end 22 of the marker 2 is connected to the moving valve plate 5, the protrusion is inserted into the groove, and the inlet 11 is connected to the telescopic hole 23 through the gap between the sensing end 22 and the moving valve plate 5.

[0051] In one embodiment, to further enrich the functionality, the periphery of the mounting body 1 is provided with a pressure relief port 14, and the periphery of the marking member 2 is provided with a pressure relief hole 26 (when the marking member 2 is rotated during installation, the pressure relief hole 26 is an arc-shaped hole). The pressure relief hole 26 communicates with the pressure relief port 14 and the pressure relief hole 26 communicates with the telescopic hole 23. When the piston 31 is compressed to its limit position by fluid pressure (the elastic member 32 is fully compressed), the pressure relief hole 26 communicates with the inlet 11. In the non-limit position, the pressure relief hole 26 is blocked from the inlet 11 by the piston 31. Therefore, when the hydraulic pressure in the channel is too high, to avoid pipe cracking or damage to the fluid pressure measuring device, when the piston 31 moves to the extreme position, the fluid pressure measuring device can actively relieve pressure through the pressure relief hole 26 and the pressure relief port 14 to discharge the fluid. Figure 10 .

[0052] The fluid pressure measuring device provided by this invention can be applied to valves or faucets.

[0053] The fluid pressure measuring device provided by this invention adopts a fluid-push piston structure. During use, the fluid pressure can be directly displayed by the simple reciprocating movement distance of the piston. On the one hand, it has the advantages of simple structure, easy molding and assembly, and low cost. On the other hand, it eliminates the need for other conversion structures, preventing fluid pressure flow from being canceled out, thereby improving measurement accuracy. Furthermore, it should be noted that the fluid pressure measuring device provided by this invention also has anti-freezing and cracking function. When applied to a liquid channel and the liquid freezes, the piston 31, by compressing the elastic element 32, can provide more space for the frozen liquid, preventing the pipe or measuring device from freezing and cracking, further enriching the functionality of the pressure measuring device.

[0054] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0055] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0056] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0057] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0058] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0059] Although the above embodiments have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Any changes, modifications, substitutions and variations made to the above embodiments by those skilled in the art are within the protection scope of the present invention.

Claims

1. A fluid pressure measuring device, characterized in that, Includes the main mounting body, identification parts, and piston assembly; The mounting body is provided with a connected inlet, a mounting cavity, and an outlet, and the mounting cavity is provided with an opening; The marking element is installed in the mounting cavity of the mounting body. One end of the marking element is the marking end, which extends out of the opening. The other end is the sensing end and is provided with a telescopic hole. The telescopic hole extends into the marking end. The periphery of the marking end is provided with an observation part, which is distributed along the telescopic hole and is provided with a scale next to it. The piston assembly includes a piston and an elastic element. The piston is telescopically installed in a telescopic hole, with one end being the head, which communicates with the inlet and is directly subjected to fluid pressure, and the other end being the tail, which extends into the area where the observation section is located. The elastic element is also installed in the telescopic hole and provides the piston with a restoring force to move toward the sensing end. The head of the piston senses the fluid pressure at the inlet and retracts further into the telescopic hole under the action of the fluid pressure. The tail of the piston moves within the observation section and indicates the fluid pressure value through the scale. The outlet is located at the end of the mounting cavity, and the inlet is located around the periphery of the mounting cavity, close to the outlet. The fluid pressure measuring device also includes a flow control rotor, which is rotatably mounted inside the mounting cavity and located between the inlet and the outlet. The rotor has a connecting channel, the outlet of which is connected to the outlet of the mounting body, and the inlet of which is connected to or disconnected from the inlet of the mounting body by rotation. The marking element is rotatably mounted and constitutes an operating element, and the sensing end is connected to the rotor and drives the rotor to rotate. The rotating block includes a stationary valve plate and a moving valve plate. The stationary valve plate is fixedly installed in the mounting cavity and has a water passage hole that connects the inlet and the outlet. The moving valve plate is rotatably installed in the mounting cavity and is in close contact with the stationary valve plate. It also has an adjustment hole. The adjustment hole can connect or block the inlet and the water passage hole by rotation. The marking end of the marking element also constitutes the operating handle end.

2. The fluid pressure measuring device according to claim 1, characterized in that, The marking end of the marking component is provided with a vent hole, which is connected to the telescopic hole. A sealing ring is provided between the outer periphery of the marking component and the inner wall of the mounting cavity to seal the opening.

3. The fluid pressure measuring device according to claim 2, characterized in that, The observation section consists of multiple observation ports, which are connected to the telescopic holes and also constitute the vent holes. Alternatively, the marking element is a transparent element, or the marking element is made of transparent material in the observation section.

4. The fluid pressure measuring device according to claim 1, characterized in that, The piston includes a piston head and a piston rod, with the piston head forming the head; the telescopic hole is stepped, with the smaller diameter end extending to the marking end of the marking element.

5. A fluid pressure measuring device according to claim 4, characterized in that, A sealing ring is fitted around the outer periphery of the piston head, and a U-shaped sealing ring is fitted around the outer periphery of the piston rod. The U-shaped sealing ring abuts against the bottom end of the section with the larger diameter of the telescopic hole, and the opening faces the piston head. The elastic element is a spring, which is fitted around the outer periphery of the piston rod and positioned between the U-shaped sealing ring and the piston head.

6. The fluid pressure measuring device according to claim 1, characterized in that, There are at least two sets of inlet and connecting channels.

7. The fluid pressure measuring device according to claim 1, characterized in that, The outlet is equipped with a pressing ring. The marking element and the piston assembly are sequentially inserted into the mounting body through the outlet and pressed by the pressing ring.

8. The fluid pressure measuring device according to claim 1, characterized in that, The mounting body has a pressure relief port on its periphery, and the marking component has a pressure relief hole on its periphery. The pressure relief hole is connected to the pressure relief port and the pressure relief hole is connected to the telescopic hole. When the piston is compressed to its limit position by fluid pressure, the pressure relief hole is connected to the inlet. When the piston is not in its limit position, the pressure relief hole is blocked from the inlet by the piston.

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