V-type differential pressure sensor and flow measuring system with V-type differential pressure sensor

Abstract

The utility model provides a V-shaped differential pressure sensor and a flow measuring system with the V-shaped differential pressure sensor, and the V-shaped differential pressure sensor comprises a differential pressure sensor part, a mounting mechanism, and a positive end measuring diaphragm and a negative end measuring diaphragm which are arranged on the mounting mechanism, wherein the differential pressure sensor component is fixed on the mounting mechanism, the mounting mechanism is provided with a positive end pressure guide channel and a negative end pressure guide channel, the positive end pressure guide channel is communicated with the positive end of the differential pressure sensor component and the positive end measuring diaphragm, and the negative end pressure guide channel is communicated with the negative end measuring diaphragm. The negative end pressure guiding channel is used for communicating the differential pressure sensor component and the negative end measuring diaphragm, the positive end measuring diaphragm is arranged on a positive end pressure taking plane of the installation mechanism, and the negative end measuring diaphragm is arranged on a negative end pressure taking plane of the installation mechanism. And a specific included angle is formed between the positive end pressure tapping plane and the negative end pressure tapping plane of the mounting mechanism.

Description

Technical Field

[0001] The utility model relates to the field of sensors, in particular to a V-shaped differential pressure sensor and a flow measurement system with the V-shaped differential pressure sensor. Background Art

[0002] A differential pressure sensor is a sensor used to measure the difference between two pressures. It is usually used to measure the pressure difference between the front and back ends of a device or component. The differential pressure flow sensor calculates the flow rate by measuring the pressure difference formed by the fluid in the pipeline. When the fluid passes through the pipeline, a differential pressure is formed, that is, the pressure difference generated by the fluid on both sides of the pipeline. The differential pressure sensor indirectly measures the flow rate by measuring this pressure difference.

[0003] The existing differential pressure transmitter uses a pressure-taking method in which the positive and negative ends are installed with a pressure-guiding clamp to achieve pressure taking on the same plane. Since the pressure-taking channel of the pressure-guiding clamp is relatively complicated, the measured medium, especially the viscous medium, often blocks the pressure-taking channel, affecting the measurement accuracy. In addition, the differential pressure transmitter of the prior art needs to be installed by means of a clamping clamp during the installation process, which is affected by the installation stress. Not only is the installation process and assembly process cumbersome, but there are also problems such as poor sealing and measurement performance. Utility Model Content

[0004] A major advantage of the present invention is that it provides a V-shaped differential pressure sensor and a flow measurement system with the V-shaped differential pressure sensor, wherein the V-shaped differential pressure sensor has two pressure-taking planes distributed at a specific angle, which is beneficial to the normal operation of the pipeline and avoids blockage.

[0005] Another advantage of the present invention is that it provides a V-shaped differential pressure sensor and a flow measurement system with the V-shaped differential pressure sensor, wherein the V-shaped differential pressure sensor eliminates the clamping plate installation method in the prior art, overcomes the inherent installation stress influence of the sensor, and improves product performance.

[0006] Another advantage of the present invention is that it provides a V-type differential pressure sensor and a flow measurement system with the V-type differential pressure sensor, wherein the V-type differential pressure sensor includes a sealing structure, wherein the sealing structure is arranged at the edge of the measuring diaphragm, thereby improving the overall sealing and improving the performance of the product.

[0007] Another advantage of the present invention is that it provides a V-shaped differential pressure sensor and a flow measurement system with the V-shaped differential pressure sensor, wherein the V-shaped differential pressure sensor simplifies the installation process and assembly process, which is beneficial to improving product yield and assembly efficiency.

[0008] Another advantage of the utility model is that it provides a V-shaped differential pressure sensor and a flow measurement system with the V-shaped differential pressure sensor, wherein the two pressure-taking planes of the V-shaped differential pressure sensor are V-shaped, which effectively increases the pressure-taking area of ​​the measuring diaphragm, greatly improves the measurement accuracy of the instrument, and makes the output more stable.

[0009] Another advantage of the utility model is that it provides a V-shaped differential pressure sensor and a flow measurement system with the V-shaped differential pressure sensor, wherein two measuring diaphragms of the V-shaped differential pressure sensor are provided with diaphragm protection rings, which greatly improves the service life of the measuring diaphragms.

[0010] Another advantage of the utility model is that it provides a V-shaped differential pressure sensor and a flow measurement system with the V-shaped differential pressure sensor, wherein the edge of the protective ring of the V-shaped differential pressure sensor is designed with a sealing structure, and the process sealing is more reliable. During installation, as long as the user makes two planes according to the required V-shaped angle, they can be directly installed to ensure good sealing.

[0011] Another advantage of the present invention is to provide a V-shaped differential pressure sensor and a flow measurement system with the V-shaped differential pressure sensor, wherein the V-shaped differential pressure sensor improves the distribution state of the sensor installation compression force and enhances the sealing after installation.

[0012] Another advantage of the present invention is to provide a V-shaped differential pressure sensor and a flow measurement system with the V-shaped differential pressure sensor, wherein the V-shaped differential pressure sensor overcomes the inherent installation stress influence of the sensor and improves product performance.

[0013] Another advantage of the utility model is that it provides a V-shaped differential pressure sensor and a flow measurement system with the V-shaped differential pressure sensor, wherein the V-shaped differential pressure sensor has the characteristics of increasing the diameter of the measuring diaphragm, improving the measurement stability, being easy to install, having reliable sealing, and preventing pipeline blockage compared with the prior art.

[0014] According to one aspect of the utility model, a V-shaped differential pressure sensor of the utility model that can achieve the aforementioned purpose and other purposes and advantages includes a differential pressure sensor component, a mounting mechanism, and a positive end measuring diaphragm and a negative end measuring diaphragm arranged on the mounting mechanism, wherein the differential pressure sensor component is fixed to the mounting mechanism, and the mounting mechanism is provided with a positive end pressure conducting channel and a negative end pressure conducting channel, wherein the positive end pressure conducting channel connects the positive end of the differential pressure sensor component and the positive end measuring diaphragm, and the negative end pressure conducting channel is used to connect the differential pressure sensor component and the negative end measuring diaphragm, wherein the positive end measuring diaphragm is arranged on the positive end pressure taking plane of the mounting mechanism, and the negative end measuring diaphragm is arranged on the negative end pressure taking plane of the mounting mechanism, wherein the plane where the positive end pressure taking plane of the mounting mechanism and the negative end pressure taking plane are located has a specific angle.

[0015] According to an embodiment of the present utility model, the positive end pressure taking plane where the positive end measuring diaphragm is located and the negative end pressure taking plane where the negative end measuring diaphragm is located are in a "V" shape.

[0016] According to one embodiment of the utility model, the pressure taking direction of the positive end measuring diaphragm is perpendicular to the positive end pressure taking plane, the pressure taking direction of the negative end measuring diaphragm is perpendicular to the negative end pressure taking plane, and the pressure taking directions of the pressure taking plane of the V-shaped differential pressure sensor are in one plane and are distributed in a V shape.

[0017] According to an embodiment of the present utility model, the angle between the pressure-taking plane where the positive-end measuring diaphragm is located and the pressure-taking plane where the negative-end measuring diaphragm is located is between 90° and 170°.

[0018] According to an embodiment of the present utility model, the angle between the positive end pressure taking plane where the positive end measuring diaphragm is located and the negative end pressure taking plane where the negative end measuring diaphragm is located is between 120° and 150°.

[0019] According to one embodiment of the utility model, the positive end measuring diaphragm and the negative end measuring diaphragm of the V-type differential pressure sensor are installed on the surface of the mounting mechanism in an inclined manner, and the positive end measuring diaphragm and the negative end measuring diaphragm are installed symmetrically relative to the mounting mechanism.

[0020] According to one embodiment of the utility model, the mounting mechanism includes a base, an upper cover, and an overpressure protection diaphragm arranged between the base and the upper cover, wherein the base and the upper cover are fixedly connected, the positive-end pressure-conducting channel and the negative-end pressure-conducting channel are formed on the base and the upper cover, and one end of the positive-end pressure-conducting channel and the negative-end pressure-conducting channel are connected to the overpressure protection diaphragm.

[0021] According to one embodiment of the utility model, it further includes a diaphragm protection ring and a process sealing ring, wherein the diaphragm protection ring is arranged on the outside of the outer peripheral edge of the positive end measuring diaphragm and the negative end measuring diaphragm, and is used to fix and protect the positive end measuring diaphragm and the negative end measuring diaphragm; the process sealing ring is arranged on the inside of the outer peripheral edge of the diaphragm protection ring, and is used to improve the sealing performance of the positive end measuring diaphragm and the negative end measuring diaphragm.

[0022] According to another aspect of the present application, the present application further provides a flow measurement system, comprising:

[0023] A V-type differential pressure sensor as described above;

[0024] Flow display instrument; and

[0025] Connector, wherein the flow display instrument is arranged on the V-type differential pressure sensor, and the flow display instrument is electrically connected to the V-type differential pressure sensor, and the data information detected by the V-type differential pressure sensor is transmitted to the flow display instrument.

[0026] According to one embodiment of the utility model, the connector includes a process connection plate, a positive end pressure conducting tube and a negative end pressure conducting tube, wherein one end of the positive end pressure conducting tube and the negative end pressure conducting tube are connected to the process connection plate, and the other ends of the positive end pressure conducting tank and the negative end pressure conducting tube are suitable for conducting the pipeline to be measured.

[0027] Through understanding of the following description and drawings, further objects and advantages of the present invention will be fully reflected.

[0028] These and other objects, features and advantages of the present invention are fully reflected in the following detailed description and accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The technical solution of the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. In the accompanying drawings, unless otherwise specified, the same reference numerals are used to represent the same components. Among them:

[0030] Figure 1 It is a structural schematic diagram of a V-shaped differential pressure sensor according to the first preferred embodiment of the utility model.

[0031] Figure 2 It is a structural schematic diagram of a flow measurement system according to the first preferred embodiment of the utility model. DETAILED DESCRIPTION

[0032] It should be pointed out that the embodiments shown in the drawings are only used as examples to specifically and vividly explain and illustrate the concept of the utility model. The size and structure thereof are not necessarily drawn in proportion, nor do they constitute a limitation to the concept of the utility model.

[0033] The directional terms such as up, down, left, right, front, back, front, back, top, bottom, etc. mentioned or may be mentioned in this specification are defined relative to the structures shown in the various drawings. They are relative concepts and may change accordingly according to different positions and different usage conditions. Therefore, these or other directional terms should not be interpreted as restrictive terms.

[0034] Those skilled in the art should understand that, in the disclosure of the present invention, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be understood as limiting the present invention.

[0035] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0036] Referring to the drawings of this application specification Figure 1 and Figure 2 As shown, a V-type differential pressure sensor and a flow measurement system with the V-type differential pressure sensor according to the first preferred embodiment of the present application are explained in the following description. The V-type differential pressure sensor includes a differential pressure sensor component 10, a mounting mechanism 20, and a positive end measuring diaphragm 30 and a negative end measuring diaphragm 40 arranged on the mounting mechanism 20, wherein the differential pressure sensor component 10 is fixed to the mounting mechanism 20, and the mounting mechanism 20 is provided with a positive end pressure conducting channel 201 and a negative end pressure conducting channel 202, wherein the positive end pressure conducting channel 201 connects the positive end of the differential pressure sensor component 10 and the positive end measuring diaphragm 30, and the negative end pressure conducting channel 202 is used to connect the differential pressure sensor component 10 and the negative end measuring diaphragm 40. The positive end measuring diaphragm 30 and the negative end measuring diaphragm 40 are installed on the mounting mechanism 20, wherein the positive end measuring diaphragm 30 is arranged on the positive end pressure plane 203 of the mounting mechanism 20, and the negative end measuring diaphragm 40 is arranged on the negative end pressure plane 204 of the mounting mechanism 20, wherein the planes where the positive end pressure plane 203 and the negative end pressure plane 204 of the mounting mechanism 20 are located have a specific angle. That is to say, in this preferred embodiment of the present application, the positive end pressure plane 203 where the positive end measuring diaphragm 30 is located and the negative end pressure plane 204 where the negative end measuring diaphragm 40 is located are no longer relative or parallel.

[0037] Preferably, in the preferred embodiment of the present application, the positive-end pressure-taking plane 203 where the positive-end measuring diaphragm 30 is located and the negative-end pressure-taking plane 204 where the negative-end measuring diaphragm 40 is located are in a "V" shape.

[0038] Those skilled in the art can understand that the pressure taking direction of the positive end measuring diaphragm 30 is perpendicular to the positive end pressure taking plane, the pressure taking direction of the negative end measuring diaphragm 40 is perpendicular to the negative end pressure taking plane, and the pressure taking directions of the pressure taking plane of the V-type differential pressure sensor are in one plane and are distributed in a V shape, which can make the pipeline more normal and avoid blockage. In a specific example of the present application, the angle between the pressure taking plane where the positive end measuring diaphragm 30 is located and the pressure taking plane where the negative end measuring diaphragm 40 is located is between 90°-170°. Preferably, the angle between the positive end pressure taking plane 203 where the positive end measuring diaphragm 30 is located and the negative end pressure taking plane 204 where the negative end measuring diaphragm 40 is located is between 120°-150°.

[0039] In the preferred embodiment of the present application, the surface on which the positive end measuring diaphragm 30 and the negative end measuring diaphragm 40 are mounted on the mounting mechanism 20 is an inclined surface, that is, the positive end measuring diaphragm 30 and the negative end measuring diaphragm 40 have the same inclination angle as the positive end pressure plane 203 and the negative end pressure plane 204. In other words, the positive end measuring diaphragm 30 and the negative end measuring diaphragm 40 of the V-type differential pressure sensor of the preferred embodiment of the present application are mounted on the surface of the mounting mechanism 20 in an inclined mounting manner, and the positive end measuring diaphragm 30 and the negative end measuring diaphragm 40 are symmetrically mounted relative to the mounting mechanism 20.

[0040] It is worth mentioning that in the preferred embodiment of the application, the positive end measuring diaphragm 30 and the negative end measuring diaphragm 40 are arranged obliquely below the mounting mechanism 20, wherein the positive end measuring diaphragm 30 and the negative end measuring diaphragm 40 are distributed on two V-shaped planes, and the pressure taking is more direct. The pressure taking planes where the positive end measuring diaphragm 30 and the negative end measuring diaphragm 40 are located are V-shaped, which effectively increases the pressure taking area of ​​the measuring diaphragm, greatly improves the instrument measurement accuracy, and thus makes the output of the V-shaped differential pressure instrument sensor more stable.

[0041] It can be understood that the V-shaped differential pressure sensor of the preferred embodiment of the present application adopts a V-shaped installation pressure taking design, which has the characteristics of increasing the measuring diaphragm diameter, improving measurement stability, easy installation, reliable sealing, and preventing pipeline blockage compared to the prior art.

[0042] The mounting mechanism 20 includes a base 21, an upper cover 22, and an overpressure protection diaphragm 23 disposed between the base 21 and the upper cover 22, wherein the base 21 and the upper cover 22 are fixedly connected, the positive-end pressure-conducting channel 201 and the negative-end pressure-conducting channel 202 are formed on the base 21 and the upper cover 22, and one end of the positive-end pressure-conducting channel 201 and the negative-end pressure-conducting channel 202 are connected to the overpressure protection diaphragm 23 to achieve overpressure protection.

[0043] The positive-end pressure-conducting channel 201 includes a first positive-end pressure-conducting channel 2011 and a second positive-end pressure-conducting channel 2012, wherein the first positive-end pressure-conducting channel 2011 is formed on the base 21, and is used to connect the positive-end measuring diaphragm 30 and the overpressure protection diaphragm 23; the second positive-end pressure-conducting channel 2012 is formed on the upper cover 22, and is used to connect the positive end of the differential pressure sensor component 10 and the overpressure protection diaphragm 23. The negative-end pressure-conducting channel 202 includes a first negative-end pressure-conducting channel 2021 and a second negative-end pressure-conducting channel 2022, wherein the first negative-end pressure-conducting channel 2021 is formed on the base 21 and the upper cover 22, and is used to connect the negative-end measuring diaphragm 40 and the negative end of the differential pressure sensor component 10; the second negative-end pressure-conducting channel 2022 is formed on the upper cover 22, and is used to connect the negative-end measuring diaphragm 40 and the overpressure protection diaphragm 23.

[0044] It can be understood that in this preferred embodiment of the present application, when the positive-end measuring diaphragm 30 is pressurized, it enters the lower part of the protective diaphragm 32 through the first positive-end pressure-conducting passage 2011 at the upper end of the positive-end protective diaphragm, and conducts pressure to the positive side of the differential pressure sensor component 10 through the second positive-end pressure-conducting passage 2012; when the negative-end measuring diaphragm 40 is pressurized, it enters the lateral pressure-conducting hole located at the upper cover 22 through the first negative-end pressure-conducting passage 2021, and conducts pressure to the negative end of the differential pressure sensor component 10, wherein the second negative-end pressure-conducting passage 2022 connected to the negative end of the differential pressure sensor component 10 transfers the pressure to the upper end of the overpressure protection diaphragm 23 to achieve overpressure protection.

[0045] The upper cover 22 of the mounting mechanism 20 is fixed on the upper part of the base 21. Preferably, the upper cover 22 and the base 21 are fixedly connected by welding. The mounting mechanism 20 further comprises a case connector 24, wherein the case connector 24 is arranged on the upper part of the upper cover 22, and the case connector 24 covers the upper cover 22 and the differential pressure sensor component 10 fixed by the upper cover 22.

[0046] The V-shaped differential pressure sensor further includes a diaphragm protection ring 50 and a process sealing ring 60, wherein the diaphragm protection ring 50 is arranged outside the outer peripheral edge of the positive end measuring diaphragm 30 and the negative end measuring diaphragm 40, and is used to fix and protect the positive end measuring diaphragm 30 and the negative end measuring diaphragm 40; the process sealing ring 60 is arranged inside the outer peripheral edge of the diaphragm protection ring 50, and is used to improve the sealing performance of the positive end measuring diaphragm 30 and the negative end measuring diaphragm 40. During installation, as long as the user makes two planes according to the required V-shaped angle, good sealing can be ensured by directly installing them.

[0047] It is worth mentioning that in the preferred embodiment of the present application, the V-shaped pressure collection method is adopted to improve the distribution of the sensor installation pressure and enhance the sealing after installation. Since the clamping plate installation method is eliminated, the inherent installation stress of the sensor is overcome and the product performance is improved.

[0048] Please refer to the attached application instructions Figure 2 As shown, the present application further provides a flow measurement system with a V-type differential pressure sensor, wherein the flow measurement system comprises the V-type differential pressure sensor, a flow display instrument 100 and a connector 200 as described above, wherein the flow display instrument 100 is arranged on the V-type differential pressure sensor, and the flow display instrument 100 is electrically connected to the V-type differential pressure sensor, and the data information detected by the V-type differential pressure sensor is transmitted to the flow display instrument 100. The V-type differential pressure sensor is fixedly connected to the connector 200, and one end of the connector 200 can be fixedly installed on the pipeline to be measured, so as to obtain the flow direction information of the pipeline to be measured.

[0049] The connector 200 is fixedly connected to the V-type differential pressure sensor by installing screws, wherein the connector 200 includes a process connection plate 210, a positive end pressure pipe 220 and a negative end pressure pipe 230, wherein one end of the positive end pressure pipe 220 and the negative end pressure pipe 230 are connected to the process connection plate 210, and the other ends of the positive end pressure tank 220 and the negative end pressure pipe 230 are suitable for conducting the pipeline to be measured. The flow measurement system obtains the pressure difference on both sides of the orifice plate, and after signal processing, displays the flow of the pipeline liquid on the instrument display.

[0050] It should be understood by those skilled in the art that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been demonstrated and explained in the embodiments, and the embodiments of the present invention may be deformed or modified in any way without departing from the principles.

[0051] The technical scope of the present invention is not limited to the contents in the above description. Those skilled in the art can make various deformations and modifications to the above embodiments without departing from the technical concept of the present invention, and these deformations and modifications all belong to the protection scope of the present invention.

Claims

1. V-type differential pressure sensor, characterized in that: The invention comprises a differential pressure sensor component, a mounting mechanism, and a positive end measuring diaphragm and a negative end measuring diaphragm arranged on the mounting mechanism, wherein the differential pressure sensor component is fixed to the mounting mechanism, and the mounting mechanism is provided with a positive end pressure conducting channel and a negative end pressure conducting channel, wherein the positive end pressure conducting channel connects the positive end of the differential pressure sensor component and the positive end measuring diaphragm, and the negative end pressure conducting channel is used to connect the differential pressure sensor component and the negative end measuring diaphragm, wherein the positive end measuring diaphragm is arranged on the positive end pressure taking plane of the mounting mechanism, and the negative end measuring diaphragm is arranged on the negative end pressure taking plane of the mounting mechanism, wherein the planes where the positive end pressure taking plane of the mounting mechanism and the negative end pressure taking plane are located have a specific angle.

2. The V-shaped differential pressure sensor according to claim 1, wherein the positive end pressure taking plane where the positive end measuring diaphragm is located and the negative end pressure taking plane where the negative end measuring diaphragm is located are in a "V" shape.

3. The V-shaped differential pressure sensor according to claim 1, wherein the pressure taking direction of the positive end measuring diaphragm is perpendicular to the positive end pressure taking plane, the pressure taking direction of the negative end measuring diaphragm is perpendicular to the negative end pressure taking plane, and the pressure taking directions of the pressure taking planes of the V-shaped differential pressure sensor are in one plane and are distributed in a V shape.

4. The V-type differential pressure sensor according to claim 2 or 3, wherein the angle between the pressure-taking plane where the positive end measuring diaphragm is located and the pressure-taking plane where the negative end measuring diaphragm is located is between 90° and 170°.

5. The V-type differential pressure sensor according to claim 2 or 3, wherein the angle between the positive end pressure plane where the positive end measuring diaphragm is located and the negative end pressure plane where the negative end measuring diaphragm is located is between 120° and 150°.

6. A V-type differential pressure sensor according to claim 4, wherein the positive end measuring diaphragm and the negative end measuring diaphragm of the V-type differential pressure sensor are installed on the surface of the mounting mechanism in an inclined manner, and the positive end measuring diaphragm and the negative end measuring diaphragm are installed symmetrically relative to the mounting mechanism.

7. A V-type differential pressure sensor according to claim 6, wherein the mounting mechanism comprises a base, an upper cover, and an overpressure protection diaphragm arranged between the base and the upper cover, wherein the base and the upper cover are fixedly connected, the positive end pressure conducting channel and the negative end pressure conducting channel are formed on the base and the upper cover, and one end of the positive end pressure conducting channel and the negative end pressure conducting channel are connected to the overpressure protection diaphragm.

8. The V-type differential pressure sensor according to claim 7 further comprises a diaphragm protection ring and a process sealing ring, wherein the diaphragm protection ring is arranged on the outside of the outer peripheral edge of the positive end measuring diaphragm and the negative end measuring diaphragm, for fixing and protecting the positive end measuring diaphragm and the negative end measuring diaphragm; the process sealing ring is arranged on the inside of the outer peripheral edge of the diaphragm protection ring, for improving the sealing performance of the positive end measuring diaphragm and the negative end measuring diaphragm.

9. A flow measurement system, characterized in that: include: The V-type differential pressure sensor according to any one of claims 1 to 8; Flow display instrument; as well as Connector, wherein the flow display instrument is arranged on the V-type differential pressure sensor, and the flow display instrument is electrically connected to the V-type differential pressure sensor, and the data information detected by the V-type differential pressure sensor is transmitted to the flow display instrument.

10. The flow measurement system according to claim 9, wherein the connector comprises a process connection plate, a positive pressure tube and a negative pressure tube, wherein one end of the positive pressure tube and the negative pressure tube are connected to the process connection plate, and the other ends of the positive pressure tank and the negative pressure tube are suitable for conducting the pipeline to be measured.

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