High-temperature-resistant gas flowmeter

Abstract

The utility model discloses a high-temperature-resistant gas flow meter which comprises a flow meter body, a display assembly is installed on the upper surface of the flow meter body, an exhaust assembly is arranged on one side of the flow meter body, the gas inlet end of the flow meter body is communicated with a gas inlet pipe, the outer surface of the gas inlet pipe is sleeved with a threaded connection sleeve, and the threaded connection sleeve is connected with a gas outlet of the flow meter body. One end of the air inlet pipe is connected with an annular limiting seat, and the inner ring of the annular limiting seat is in threaded connection with a filter screen plate. According to the gas flow meter, the filter screen plate can be installed at the front end of the gas inlet end of the gas flow meter through the arrangement of the threaded connecting sleeve and the annular threaded groove, circulating gas can be filtered through the arrangement of the filter screen plate, and impurities, particles and the like which are possibly carried in the gas are prevented from entering the flow meter; therefore, the effect of filtering impurities or particles in the gas is achieved, the problem that the impurities or particles are adsorbed on the surface of the sensor assembly to affect the measurement precision is avoided, and the measurement accuracy is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to gas flowmeter field especially high temperature resistant gas flowmeter. BACKGROUND

[0002] High temperature resistant gas flowmeter includes vortex flowmeter, is according to the principle of karman vortex, when fluid flows through the vortex street of flowmeter, will produce two columns of regular vortex alternately on its both sides, and the frequency of vortex is directly proportional to the flow velocity of fluid, and the fluid flow is calculated by measuring vortex frequency, adopts the unique structure and material selection to make it can work stably under the high temperature environment of up to 350 DEG C, and is widely used in the flow measurement of high temperature gas in petroleum, chemical industry, pharmacy, papermaking, metallurgy, electric power, environmental protection and other industries.

[0003] The high temperature resistant gas flowmeter is a commonly used component in gas measurement at present, but the gas inlet end of the current high temperature resistant gas flowmeter is difficult to filter impurities or particles in the gas, and the impurities or particles in the gas will enter the inside of the flowmeter and be easily adsorbed on the surface of the sensor assembly, thereby affecting the measurement accuracy and causing errors to the subsequent measurement structure, therefore, the high temperature resistant gas flowmeter is proposed to solve the above problems. UTILITY MODEL CONTENTS

[0004] The utility model discloses a high temperature resistant gas flowmeter, which aims to solve the problems in the background art.

[0005] To achieve the above object, the utility model provides the following technical scheme:

[0006] A high temperature resistant gas flowmeter, comprising a flowmeter main body, a display assembly is installed on the upper surface of the flowmeter main body, an exhaust assembly is arranged on one side of the flowmeter main body, an air inlet pipe is communicated with the air inlet end of the flowmeter main body, a threaded connection sleeve is sleeved on the outer surface of the air inlet pipe, an annular limiting seat is connected to one end of the air inlet pipe, a filter screen plate is threadedly connected to the inner ring of the annular limiting seat, a first connecting disc is arranged on one side of the annular limiting seat, an annular threaded groove is formed in one side surface of the first connecting disc, and the outer surface of one end of the threaded connection sleeve is threadedly connected with the inner wall of the annular threaded groove.

[0007] In a further embodiment, the exhaust assembly comprises a flow guide cover, one end of the flow guide cover is communicated with the exhaust end of the flowmeter main body, a second connecting disc is communicated with one end of the flow guide cover, and a plurality of first connecting holes are formed in the outer surface of the second connecting disc.

[0008] In a further embodiment, the display assembly comprises a detection tube, the bottom end of the detection tube is communicated with the upper surface of the flowmeter main body, and a display instrument is communicated with the top end of the detection tube.

[0009] In further embodiments, one side of the display instrument is provided with a sealing cover plate, one side of the sealing cover plate is provided with a heat dissipation hole, and the inner wall of the heat dissipation hole is connected with a protective mesh plate.

[0010] In further embodiments, one side of the annular limiting seat is provided with an annular groove, the inner wall of the annular groove is connected with an annular sealing gasket, one side of the annular sealing gasket is in close contact with the inner wall of the threaded connecting sleeve, the inner wall of the annular threaded groove is connected with a sealing washer, and one side of the sealing washer is in contact with one end of the threaded connecting sleeve.

[0011] In further embodiments, one side of the first connecting disc is provided with an annular recess, and the first connecting disc is provided with a plurality of second connecting holes.

[0012] Compared with the prior art, the utility model has the beneficial effects that:

[0013] The utility model discloses a threaded connecting sleeve and an annular threaded groove are arranged, the threaded connecting sleeve can be connected and installed with the first connecting disc, the threaded connecting sleeve is installed, the filter mesh plate can be installed at the front end of the air inlet end, the filter mesh plate can filter the gas, prevent the impurities and particles in the gas from entering the flowmeter, and the impurities and particles in the gas can be filtered, the problem that the impurities and particles are adsorbed on the surface of the sensor assembly and affect the measurement accuracy is avoided, and the measurement accuracy is improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a front view of the three-dimensional structure of the high-temperature-resistant gas flowmeter.

[0015] Figure 2 It is a front view of the threaded connecting sleeve in the high-temperature-resistant gas flowmeter.

[0016] Figure 3 It is a rear view of the three-dimensional structure of the display assembly in the high-temperature-resistant gas flowmeter.

[0017] Figure 4 It is a high-temperature-resistant gas flowmeter Figure 2 It is a structure schematic view of the local amplification of A in the high-temperature-resistant gas flowmeter.

[0018] In the figure: 1, flow meter main body; 2, display assembly; 201, detection tube; 202, display instrument; 203, sealing cover plate; 204, protective mesh plate; 205, heat dissipation hole; 3, threaded connection sleeve; 4, exhaust assembly; 401, flow guide cover; 402, second connecting disc; 403, first connecting hole; 5, air inlet pipe; 6, annular groove; 7, filter mesh plate; 8, first connecting disc; 9, annular limiting seat; 10, annular threaded groove; 11, sealing washer; 12, annular recess; 13, second connecting hole; 14, annular sealing gasket. DETAILED DESCRIPTION

[0019] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second" and the like are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first", "second" and the like can be explicitly or implicitly included one or more. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0020] In the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0021] The technical scheme in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary skilled in the art without creative labor belong to the scope of protection of the present application.

[0022] Please refer to Figures 1-4The utility model discloses a kind of high-temperature-resistant gas flow meters, including flowmeter main body 1, the upper surface of flowmeter main body 1 is equipped with display assembly 2, flowmeter main body 1 and display assembly 2 can constitute gas flow meter, vortex generator is arranged in the inside of flowmeter main body 1, when fluid flows through the vortex generator of flowmeter, two columns of regular vortex will be alternately generated on its both sides, the frequency of vortex is directly proportional to the flow rate of fluid, fluid flow is calculated by measuring vortex frequency, vortex generator can be selected with high-temperature-resistant material, can keep stable structure and performance in high-temperature fluid, the shell of flowmeter main body 1 uses high-temperature-resistant stainless steel or alloy material, one side of flowmeter main body 1 is provided with exhaust component 4, the gas inlet end of flowmeter main body 1 is communicated with air inlet pipe 5, the outer surface of air inlet pipe 5 is sleeved with threaded connection sleeve 3, one end of air inlet pipe 5 is connected with annular limit seat 9, the inner ring of annular limit seat 9 is threadedly connected with filter screen plate 7, filter screen plate 7 is any one of airflow filtering assembly, can be flexibly replaced according to gas type, one side of annular limit seat 9 is provided with first connecting disc 8, the side surface of first connecting disc 8 is provided with annular thread groove 10, the outer surface of one end of threaded connection sleeve 3 is threadedly connected with the inner wall of annular thread groove 10.

[0023] In further embodiments, the exhaust component 4 includes a flow guide cover 401, one end of the flow guide cover 401 is communicated with the exhaust end of the flowmeter main body 1, one end of the flow guide cover 401 is communicated with a second connecting disc 402, the outer surface of the second connecting disc 402 is provided with a plurality of first connecting holes 403, by the communication of one end of the flow guide cover 401 with the exhaust end of the flowmeter main body 1, it plays a role in guiding the direction of gas exhaust, the second connecting disc 402 communicated with the flow guide cover 401, and cooperated with the plurality of first connecting holes 403, can be used to connect subsequent pipelines or other equipment, so that the exhausted gas can be reasonably collected or further processed, the display assembly 2 includes a detection tube 201, the bottom end of the detection tube 201 is communicated with the upper surface of the flowmeter main body 1, the top end of the detection tube 201 is communicated with a display instrument 202, one side of the display instrument 202 is provided with a sealing cover plate 203, one side of the sealing cover plate 203 is provided with a heat dissipation hole 205, the inner wall of the heat dissipation hole 205 is connected with a protective screen plate 204, by the communication of the bottom end of the detection tube 201 with the flowmeter main body 1, the relevant flow parameters of the gas can be transmitted to the display instrument 202 at the top end through the detection tube 201, the display instrument 202 processes and analyzes these parameters, finally presents the gas flow in the form of intuitive numbers or other forms, for the operator to read and record, through the heat dissipation hole 205 and the protective screen plate 204 provided by the sealing cover plate 203, the heat generated during the operation of the display instrument 202 can be dissipated in time, and the protective screen plate 204 prevents foreign matter such as dust from entering the inside of the display instrument 202 through the heat dissipation hole 205.

[0024] In further embodiments, one side of the annular limiting seat 9 is provided with an annular groove 6, the inner wall of the annular groove 6 is connected with an annular sealing gasket 14, one side of the annular sealing gasket 14 is in close contact with the inner wall of the threaded connecting sleeve 3, the inner wall of the annular threaded groove 10 is connected with a sealing washer 11, one side of the sealing washer 11 is in contact with one end of the threaded connecting sleeve 3, one side of the first connecting disc 8 is provided with an annular recess hole 12, one side of the first connecting disc 8 is provided with a plurality of second connecting holes 13, through the annular sealing gasket 14 inside the annular groove 6 and the cooperation of the sealing washer 11, the threaded connecting sleeve 3 can be sealed between the annular limiting seat 9 and the first connecting disc 8, and the double sealing design can ensure that the gas does not leak at the connection, and the stability and accuracy of the measurement environment are ensured.

[0025] The working principle of the utility model is: first, one end of the threaded connecting sleeve 3 is threadedly connected with the annular threaded groove 10 of the first connecting disc 8, so that the flowmeter main body 1 is stably connected with the air inlet assembly, then the gas can be filtered through the filter screen 7 before entering the air inlet pipe 5, so as to prevent impurities and particles possibly carried in the gas from entering the flowmeter, then the gas entering the flowmeter main body 1 flows and is detected inside the flowmeter main body 1, and then the gas after flow detection is discharged through the air outlet assembly 4 of the flowmeter main body 1.

[0026] For those skilled in the art, it is obvious that the utility model is not limited to the details of the above-mentioned exemplary embodiments, and can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the utility model is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0027] In addition, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description manner of the specification is only for the sake of clarity, those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that those skilled in the art can understand.

Claims

1. A high temperature resistant gas flow meter, characterized by: The utility model provides a flowmeter, including flowmeter body (1), the upper surface of flowmeter body (1) is equipped with display component (2), one side of flowmeter body (1) is provided with exhaust component (4), the air inlet end of flowmeter body (1) is connected with air inlet pipe (5), the outer surface of air inlet pipe (5) is equipped with threaded connecting sleeve (3), one end of air inlet pipe (5) is connected with annular limit seat (9), the inner ring threaded connection of annular limit seat (9) is equipped with filter screen (7), one side of annular limit seat (9) is provided with first connecting disc (8), the side surface of first connecting disc (8) is equipped with annular screw groove (10), the outer surface of threaded connecting sleeve (3) one end is connected with the inner wall of annular screw groove (10) with thread.

2. The high temperature resistant gas flow meter according to claim 1, wherein: The exhaust component (4) includes a fairing (401), the exhaust end of the flowmeter body (1) is communicated with the one end of the fairing (401), the second connecting disc (402) is communicated with the one end of the fairing (401), and a plurality of first connecting holes (403) are formed in the outer surface of the second connecting disc (402).

3. The high temperature resistant gas flow meter according to claim 1, wherein: The display component (2) includes a detection tube (201), the bottom end of the detection tube (201) is communicated with the upper surface of the flowmeter body (1), and the top end of the detection tube (201) is communicated with a display instrument (202).

4. The high temperature resistant gas flow meter according to claim 3, wherein: The side surface of the display instrument (202) is provided with a sealing cover plate (203), the side surface of the sealing cover plate (203) is provided with a heat dissipation hole (205), and the inner wall of the heat dissipation hole (205) is connected with a protective screen (204).

5. The high temperature resistant gas flow meter according to claim 1, wherein: The side surface of the annular limit seat (9) is provided with an annular groove (6), the inner wall of the annular groove (6) is connected with an annular sealing gasket (14), the side surface of the annular sealing gasket (14) is in close contact with the inner wall of the threaded connecting sleeve (3), the inner wall of the annular screw groove (10) is connected with a sealing gasket (11), and the side surface of the sealing gasket (11) is in contact with one end of the threaded connecting sleeve (3).

6. The high temperature resistant gas flow meter of claim 1, wherein: The side surface of the first connecting disc (8) is provided with an annular recess (12), and a plurality of second connecting holes (13) are formed in the side surface of the first connecting disc (8).

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