A gas flow meter

Abstract

The application belongs to the technical field of gas flow meters, and discloses a gas flow meter which comprises a connecting pipe fitting and a core processing piece, and further comprises a water removal assembly installed in the connecting pipe fitting and used for removing water in the gas in the connecting pipe fitting, and a sealing assembly arranged in the middle of the connecting pipe fitting and used for sealing a connecting point of the water removal assembly and the connecting pipe fitting. The gas flow meter is provided with a cooperation of a plug-in opening and a porous water absorption plate, so that the water in the gas can be absorbed by the porous water absorption plate, and the formation of condensed water on the surface of the temperature sensor due to the water is avoided. The porous water absorption plate is inserted into the plug-in opening until the porous water absorption plate abuts against the bottom limiting plate, and then the porous water absorption plate is fixed. When the gas containing water passes through the porous water absorption plate, the porous water absorption plate absorbs the water in the air, so that the gas passes through the temperature sensor under the condition that the temperature is unchanged.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of gas flow meters, and specifically relates to a gas flow meter. BACKGROUND

[0002] A gas flow meter is an instrument for measuring the flow rate or total amount of gas in a pipeline or channel, and is widely used in industrial production, energy metering, environmental protection, medical equipment, aerospace and other fields. With the improvement of industrial automation level, the demand for accurate measurement of gas flow is increasing. Currently, common gas flow meters on the market include thermal flow meters, differential pressure flow meters, ultrasonic flow meters and the like. These technologies perform well in specific scenarios, but still have challenges in multi-gas compatibility, long-term stability and high-precision measurement. In recent years, with the development of new materials and microelectronic technology, the measurement accuracy and reliability of gas flow meters have been improved to some extent, but they still cannot fully meet the demand for accurate measurement of multiple gases under complex working conditions.

[0003] In the prior art, a thermal flow meter calculates the flow rate by measuring the temperature change of a gas flowing through a thermal element. It is suitable for low flow rate gas measurement, but it is sensitive to gas composition. If the gas contains moisture, condensate will form on the surface of the detector, which will affect the sensing effect of the temperature sensor. Therefore, a gas flow meter is proposed. SUMMARY

[0004] To solve the problem that condensate affects the sensing effect of the temperature sensor in the background art, the application provides a gas flow meter.

[0005] To achieve the above purpose, the application provides the following technical scheme: a gas flow meter comprising a connecting pipe and a core processing piece, further comprising:

[0006] A water removal assembly is installed inside the connecting pipe for removing water from the gas inside the connecting pipe;

[0007] A sealing assembly is arranged in the middle of the connecting pipe for sealing the connecting point of the water removal assembly and the connecting pipe;

[0008] The water removal assembly comprises a bottom limiting plate arranged on the outer side of the connecting pipe, the inside of the bottom limiting plate is linearly distributed with a positioning groove, and a porous water absorption plate is arranged in the positioning groove;

[0009] The sealing assembly comprises a sealing shell fixedly connected with the connecting pipe, a sealing cover plate is arranged on the top of the sealing shell, and a replacement opening is arranged on the side of the sealing cover plate.

[0010] Preferably, the connecting pipe is fixedly connected with the core processing piece, the core processing piece is provided with a temperature sensor and a speed sensor at one end inside the connecting pipe, and a pair of elastic pieces are fixedly connected inside the sealing assembly.

[0011] Preferably, the sealing shell is located outside the connecting pipe, the sealing shell is provided with a vertically arranged insertion opening on the connecting pipe inside the sealing shell, and the sealing shell is located at the air inlet end of the connecting pipe.

[0012] Preferably, the bottom limiting plate is slidably connected inside the sealing shell, the bottom limiting plate is fixedly connected with the elastic piece at the bottom, a porous water absorption plate is placed inside the positioning groove, a main body support is slidably connected inside the bottom limiting plate, and the main body support is fixedly connected with a sliding plate in a linear distribution on the side surface.

[0013] Preferably, the porous water absorption plate is in a wave shape, the porous water absorption plate is in a linear distribution and parallel to the connecting pipe, the porous water absorption plate is slidably connected inside the insertion opening, the porous water absorption plate penetrates the connecting pipe, the bottom of the porous water absorption plate is provided with a fixed opening, and the fixed opening is located at the bending portion of the porous water absorption plate.

[0014] Preferably, the sliding plate is fixedly connected with a fixed insertion plate in a linear distribution at the top, the fixed insertion plate is arc-shaped at two corners on one side, the fixed insertion plate is fixedly connected with a limiting plate at the top, and the limiting plate is arc-shaped away from the main body support and matched with the bending portion of the porous water absorption plate.

[0015] Preferably, the fixed insertion plate is inserted inside the fixed opening, the fixed insertion plate is clamped inside the bottom limiting plate, the main body support is provided with a pushing protrusion at the middle portion, and the main body support is located at the side close to the replacement opening of the bottom limiting plate.

[0016] Preferably, the lower side of the connecting pipe is fixedly connected with two groups of baffle plates at a section inside the sealing shell, the bottom of the baffle plate is in a horizontal state and abuts against the top of the bottom limiting plate.

[0017] Preferably, the bottom limiting plate is abutted against the baffle plate at the bottom of the connecting pipe by the elastic piece, at this time, the porous water absorption plate is inserted from the top of the sealing shell to the insertion opening, so that the porous water absorption plate penetrates the connecting pipe and enters the positioning groove.

[0018] Preferably, after the porous water absorption plate enters the positioning groove, the main body support is pushed inward from the replacement opening, so that the main body support pushes the sliding plate to move, the fixed insertion plate is moved to the porous water absorption plate by the sliding plate and is inserted into the fixed opening, and the fixed insertion plate is abutted against the bottom limiting plate.

[0019] Compared with the prior art, the application has the following beneficial effects:

[0020] The application is characterized in that the insertion opening and the porous water absorption plate are matched, and the water in the gas is absorbed by the porous water absorption plate, so that the condensed water on the surface of the temperature sensor is avoided, the porous water absorption plate is inserted into the insertion opening until the porous water absorption plate is in contact with the bottom limiting plate, and then the porous water absorption plate is fixed, when the gas containing water passes through the porous water absorption plate, the water in the air is absorbed by the porous water absorption plate, and the gas passes through the temperature sensor at a constant temperature.

[0021] The application is characterized in that the bottom limiting plate and the elastic member are matched, the porous water absorption plate is adjusted, the porous water absorption plate after absorbing water is removed from the inside of the connecting pipe, when the gas containing water passes through the porous water absorption plate, the water in the air is absorbed by the porous water absorption plate, the weight of the porous water absorption plate is increased after absorbing water, the porous water absorption plate is pressed to contract the elastic member through the bottom limiting plate, the bottom limiting plate drives the porous water absorption plate to move downward, and the porous water absorption plate that has not absorbed water moves downward to continue absorbing water.

[0022] The application is characterized in that the sealing assembly and the water removal assembly are matched, the water in the gas is removed, the gas leakage is avoided, the porous water absorption plate is replaced, the porous water absorption plate is pulled upward from the sealing cover plate, the porous water absorption plate drives the bottom limiting plate to move upward to the replacement opening, the sliding plate and the fixed insertion plate are moved by pulling the main body support, the fixed insertion plate is fixed to the fixed opening, the porous water absorption plate is removed, and the porous water absorption plate is installed. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a schematic diagram of the whole structure of the application;

[0024] Figure 2 It is a middle sectional view of the connecting pipe of the application;

[0025] Figure 3 It is a sectional view of the sealing assembly of the application;

[0026] Figure 4 It is an installation state diagram of the water removal assembly and the sealing assembly of the application;

[0027] Figure 5 It is a connection diagram of the bottom limiting plate and the porous water absorption plate of the application;

[0028] Figure 6 It is a partial sectional view of the bottom limiting plate of the application.

[0029] In the figure: 1, connecting pipe fitting; 2, core processing piece; 3, temperature sensor; 4, speed sensor; 5, sealing assembly; 501, sealing shell; 502, sealing cover plate; 503, replacement opening; 504, insertion opening; 6, water removal assembly; 601, bottom limiting plate; 602, porous water absorption plate; 603, positioning groove; 604, main body support; 605, sliding plate; 606, fixed insertion plate; 607, limiting plate; 608, fixed opening; 7, elastic member. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0031] As shown in the figure, the present application provides a gas flow meter, which comprises a connecting pipe fitting 1 and a core processing piece 2, and further comprises: Figures 1 to 6

[0032] A water removal assembly 6 is installed inside the connecting pipe fitting 1 for removing water from the gas inside the connecting pipe fitting 1;

[0033] A sealing assembly 5 is arranged in the middle of the connecting pipe fitting 1 for sealing the connecting point of the water removal assembly 6 and the connecting pipe fitting 1;

[0034] The water removal assembly 6 comprises a bottom limiting plate 601 arranged outside the connecting pipe fitting 1, the inside of the bottom limiting plate 601 is linearly distributed with a positioning groove 603, and the inside of the positioning groove 603 is placed with a porous water absorption plate 602;

[0035] The sealing assembly 5 comprises a sealing shell 501 fixedly connected with the connecting pipe fitting 1, the top of the sealing shell 501 is provided with a sealing cover plate 502, and the side of the sealing cover plate 502 is provided with a replacement opening 503.

[0036] ​With the above scheme: by opening the sealing cover plate 502 and the replacement opening 503, the porous water absorption plate 602 is pulled upward from the sealing cover plate 502, and the porous water absorption plate 602 drives the bottom limiting plate 601 to move upward to the replacement opening 503, then the main body support 604 is pulled manually through the protrusion in the middle of the main body support 604 to move, the main body support 604 drives the sliding plate 605 and the fixed plug plate 606 to move, the fixed plug plate 606 is released from the fixing of the fixed opening 608, the porous water absorption plate 602 is released, so that the porous water absorption plate 602 is taken out, then the new porous water absorption plate 602 is inserted into the insertion opening 504, until the porous water absorption plate 602 is in contact with the bottom limiting plate 601, then the main body support 604 is pushed to reset the sliding plate 605 and the fixed plug plate 606 to fix the porous water absorption plate 602, when the water-containing gas passes through the porous water absorption plate 602, the porous water absorption plate 602 absorbs the moisture in the air, then the gas flows to the temperature sensor 3 and the speed sensor 4, when the porous water absorption plate 602 absorbs moisture, the weight of the porous water absorption plate 602 increases, and then the bottom limiting plate 601 is pressed downward by the porous water absorption plate 602, so that the bottom limiting plate 601 presses the elastic member 7 to shrink, then the porous water absorption plate 602 moves downward, so that the porous water absorption plate 602 moves downward to continue to absorb moisture.

[0037] As shown in Figures 1 to 3 , the connecting pipe 1 is fixedly connected with the core processing piece 2, the core processing piece 2 is provided with a temperature sensor 3 and a speed sensor 4 at one end inside the connecting pipe 1, and a pair of elastic members 7 are fixedly connected inside the sealing assembly 5.

[0038] With the above scheme: by setting the temperature sensor 3 and the speed sensor 4, the temperature and flow rate of the gas can be detected, so as to complete the detection of the gas, and the sealing assembly 5 is designed to seal the water removal assembly 6, so as to facilitate the replacement of the porous water absorption plate 602.

[0039] As shown in Figures 2 to 4 , the sealing shell 501 is located outside the connecting pipe 1, the insertion opening 504 is vertically arranged in the connecting pipe 1, and the sealing shell 501 is located at the gas inlet end of the connecting pipe 1.

[0040] With the above scheme: by setting the insertion opening 504, the porous water absorption plate 602 is prevented from being removed, and the porous water absorption plate 602 passes through the inside of the connecting pipe 1 to remove water from the gas passing through the inside of the connecting pipe 1, so as to avoid the formation of condensed water on the surface of the detector to affect the accuracy of the detector.

[0041] As shown in Figures 3 to 6As shown, the bottom limiting plate 601 is slidingly connected inside the sealing shell 501, the bottom of the bottom limiting plate 601 is fixedly connected with the elastic member 7, the positioning groove 603 has the porous water absorption plate 602 placed inside, the bottom limiting plate 601 has the main body support 604 slidingly connected inside, the side of the main body support 604 is fixedly connected with the sliding plate 605 in a linear distribution, the porous water absorption plate 602 is in a wave shape, the porous water absorption plate 602 is in a linear distribution and is in a parallel distribution with the connecting pipe 1, the porous water absorption plate 602 is slidingly connected inside the insertion port 504, the porous water absorption plate 602 penetrates the connecting pipe 1, and the bottom of the porous water absorption plate 602 is provided with the fixing port 608, and the fixing port 608 is located at the bending portion of the porous water absorption plate 602.

[0042] By setting the bottom limiting plate 601, the porous water absorption plate 602 is borne and fixed by the bottom limiting plate 601, the movement of the porous water absorption plate 602 is facilitated, the elastic member 7 is arranged at the bottom of the bottom limiting plate 601, the elastic member 7 can be compressed after the porous water absorption plate 602 absorbs water and increases in weight, and then the porous water absorption plate 602 can be moved downward, the porous water absorption plate 602 which has not absorbed water is moved downward into the connecting pipe 1, the porous water absorption plate 602 is arranged in a wave shape, the contact area of the gas and the porous water absorption plate 602 can be increased, the fixing port 608 is arranged, the porous water absorption plate 602 is fixed, the porous water absorption plate 602 can be synchronously moved up and down, and the fixing port 608 is arranged at the bending portion of the porous water absorption plate 602, so that the porous water absorption plate 602 is prevented from being extruded and deformed by the fixed plug-in plate 606.

[0043] As shown in Figure 4 and Figure 6 , the top of the sliding plate 605 is fixedly connected with the fixed plug-in plate 606 in a linear distribution, one side of the fixed plug-in plate 606 is arc-shaped, the top of the fixed plug-in plate 606 is fixedly connected with the limiting plate 607, one side of the limiting plate 607 away from the main body support 604 is arc-shaped and matches the bending portion of the porous water absorption plate 602, the fixed plug-in plate 606 is inserted into the fixing port 608, the fixed plug-in plate 606 is clamped inside the bottom limiting plate 601, the main body support 604 is provided with the knob in the middle, and the main body support 604 is located at the side of the bottom limiting plate 601 close to the replacement port 503.

[0044] By setting the fixed plug-in plate 606 and the limiting plate 607, the fixed plug-in plate 606 is inserted into the fixing port 608 to fix the porous water absorption plate 602, one side of the fixed plug-in plate 606 is arc-shaped, the fixed plug-in plate 606 can be conveniently inserted into the fixing port 608 and avoid extruding the porous water absorption plate 602, the limiting plate 607 is arranged, the limiting plate 607 can limit the porous water absorption plate 602 and keep the stability of the porous water absorption plate 602, and the knob arranged in the middle of the main body support 604 can conveniently drive the main body support 604 to move.

[0045] As shown in Figure 4 The lower side of the connecting pipe 1 in the inner part of the sealing shell 501 is fixedly connected with two groups of baffle plates, the bottom of the baffle plate is in a horizontal state and abuts against the top of the bottom limiting plate 601.

[0046] The above scheme is adopted: the bottom limiting plate 601 is abutted against by the baffle plate when being pushed by the elastic member 7, so that the bottom limiting plate 601 is kept in a horizontal state, and the multi-hole water absorbing plate 602 passing through the insertion port 504 can accurately enter the inner part of the positioning groove 603, thereby facilitating the placement of the multi-hole water absorbing plate 602 during replacement.

[0047] As shown in Figure 5 and Figure 6 The bottom limiting plate 601 is abutted against by the baffle plate at the bottom of the connecting pipe 1 when being pushed by the elastic member 7, at this time, the multi-hole water absorbing plate 602 is inserted from the top of the sealing shell 501 to the insertion port 504 to make the multi-hole water absorbing plate 602 penetrate the connecting pipe 1 and enter the inner part of the positioning groove 603, after the multi-hole water absorbing plate 602 enters the inner part of the positioning groove 603, the main body support 604 is pushed inward from the replacement port 503, the main body support 604 pushes the sliding plate 605 to move, and the fixed insertion plate 606 is moved to the multi-hole water absorbing plate 602 by the sliding plate 605 and is inserted into the inner part of the fixed port 608 until the fixed insertion plate 606 abuts against the bottom limiting plate 601.

[0048] The above scheme is adopted: when the bottom limiting plate 601 is abutted against by the baffle plate at the bottom of the connecting pipe 1 when being pushed by the elastic member 7, at this time, the multi-hole water absorbing plate 602 is inserted from the top of the sealing shell 501 to the insertion port 504 to make the multi-hole water absorbing plate 602 penetrate the connecting pipe 1 and enter the inner part of the positioning groove 603, after the multi-hole water absorbing plate 602 enters the inner part of the positioning groove 603, the main body support 604 is pushed inward from the replacement port 503, the main body support 604 pushes the sliding plate 605 to move, and the fixed insertion plate 606 is moved to the multi-hole water absorbing plate 602 by the sliding plate 605 and is inserted into the inner part of the fixed port 608 until the fixed insertion plate 606 abuts against the bottom limiting plate 601.

[0049] The working principle and use process of the present application are as follows: when the water-containing gas passes through the multi-hole water absorbing plate 602 during use, the multi-hole water absorbing plate 602 absorbs the moisture in the air, and then the gas flows to the temperature sensor 3 and the speed sensor 4, and the flow rate of the gas is detected, when the multi-hole water absorbing plate 602 absorbs moisture, the weight of the multi-hole water absorbing plate 602 increases, and then the multi-hole water absorbing plate 602 presses the bottom limiting plate 601 downward to move downward, so that the bottom limiting plate 601 extrudes the elastic member 7 to shrink, and then the multi-hole water absorbing plate 602 moves downward, so that the multi-hole water absorbing plate 602 which has not absorbed moisture moves downward to continue to absorb moisture.

[0050] When the porous water absorption plate 602 needs to be replaced, the sealing cover plate 502 and the replacement opening 503 are opened at this time, the porous water absorption plate 602 is pulled up from the sealing cover plate 502, the porous water absorption plate 602 drives the bottom limiting plate 601 to move up to the replacement opening 503, then the main body support 604 is manually pulled through the protrusion in the middle of the main body support 604 to move, the main body support 604 drives the sliding plate 605 and the fixed insertion plate 606 to move, the fixed insertion plate 606 is released from the fixation of the fixed opening 608, the porous water absorption plate 602 is released from the fixation, so as to take out the porous water absorption plate 602, then the new porous water absorption plate 602 is inserted into the insertion opening 504, until the porous water absorption plate 602 is in contact with the bottom limiting plate 601, then the main body support 604 is pushed to reset the sliding plate 605 and the fixed insertion plate 606 to fix the porous water absorption plate 602.

[0051] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting; it is not intended to exclude myriad other embodiments of the present application that are not specifically enumerated herein. In this document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. The terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. Any reference to claimants in the claims is intended to reference the inventors named in the Application Data Sheet as filing their first application in this application.

[0052] While the embodiments of the application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made therein without departing from the spirit and scope of the application, which is defined by the following claims and their equivalents.

Claims

1. A gas flow meter comprising a connecting piece (1) and a core processing piece (2), characterized in that, Also include: The water removal assembly (6) is installed inside the connecting pipe (1) for water removal of the gas inside the connecting pipe (1); Sealing assembly (5) is arranged in the middle of the connecting pipe (1) for sealing the connecting point of the water removal assembly (6) and the connecting pipe (1); Wherein, the water removal assembly (6) includes a bottom limiting plate (601) arranged outside the connecting pipe (1), the bottom limiting plate (601) is internally linearly distributed with a positioning groove (603), and the positioning groove (603) is internally placed with a porous water absorption plate (602); The sealing assembly (5) includes a sealing shell (501) fixedly connected with the connecting pipe (1), and the sealing shell (501) is provided with a sealing cover plate (502) on the top, and the sealing cover plate (502) is provided with a replacement opening (503) on the side; The connecting pipe (1) is fixedly connected with the core processing part (2), and the temperature sensor (3) and the speed sensor (4) are arranged at one end of the core processing part (2) inside the connecting pipe (1), and a pair of elastic members (7) are fixedly connected inside the sealing assembly (5); The bottom limiting plate (601) is slidably connected inside the sealing shell (501), the bottom limiting plate (601) is fixedly connected with the elastic member (7) at the bottom, the positioning groove (603) is internally placed with a porous water absorption plate (602), and the main body support (604) is slidably connected inside the bottom limiting plate (601), and the main body support (604) is fixedly connected with a sliding plate (605) on the side in linear distribution; When the water-containing gas passes through the porous water absorption plate (602), the porous water absorption plate (602) absorbs the moisture in the air, and then the gas flows to the temperature sensor (3) and the speed sensor (4), when the porous water absorption plate (602) absorbs the moisture, the weight of the porous water absorption plate (602) increases, and then the porous water absorption plate (602) presses the bottom limiting plate (601) downward to move downward, so that the bottom limiting plate (601) extrudes the elastic member (7) to shrink, and then the porous water absorption plate (602) moves downward, so that the porous water absorption plate (602) moves downward to continue absorbing moisture.

2. The gas flow meter of claim 1, wherein: The sealing shell (501) is located outside the connecting pipe (1), the sealing shell (501) is internally provided with a vertically arranged insertion opening (504) on the connecting pipe (1), and the sealing shell (501) is located at the gas inlet end of the connecting pipe (1).

3. The gas flow meter of claim 1, wherein: The porous water absorption plate (602) is in wave shape, the porous water absorption plate (602) is linearly distributed and parallel to the connecting pipe (1), the porous water absorption plate (602) is slidably connected inside the insertion opening (504), the porous water absorption plate (602) penetrates the connecting pipe (1), and the porous water absorption plate (602) is provided with a fixing opening (608) at the bottom.

4. The gas flow meter of claim 1, wherein: The top of the sliding plate (605) is linearly and fixedly connected with a fixed insertion plate (606), one side of the fixed insertion plate (606) is arc-shaped, the top of the fixed insertion plate (606) is fixedly connected with a limiting plate (607), and one side of the limiting plate (607) away from the main support (604) is arc-shaped and matches the bending part of the porous water absorption plate (602).

5. The gas flow meter of claim 4, wherein: The fixed insertion plate (606) is inserted into a fixed port (608), the fixed insertion plate (606) is clamped in the bottom limiting plate (601), the middle of the main support (604) is provided with a knob, and the main support (604) is located on one side of the bottom limiting plate (601) close to the replacement port (503).

6. The gas flow meter of claim 2, wherein: The lower side of the connecting pipe (1) in the sealing shell (501) is fixedly connected with two groups of baffles, the bottom of the baffle is horizontally arranged and abuts against the top of the bottom limiting plate (601).

7. The gas flow meter of claim 1, wherein: The bottom limiting plate (601) is pushed by the elastic element (7) and abuts against the baffle at the bottom of the connecting pipe (1), at this time, the porous water absorption plate (602) is inserted into the sealing shell (501) from the insertion port (504) on the top of the sealing shell (501), so that the porous water absorption plate (602) penetrates through the connecting pipe (1) and enters the positioning groove (603).

8. The gas flow meter of claim 1, wherein: After the porous water absorption plate (602) enters the positioning groove (603), the main support (604) is pushed inward from the replacement port (503), so that the main support (604) pushes the sliding plate (605) to move, the fixed insertion plate (606) is driven by the sliding plate (605) to move to the porous water absorption plate (602) and is inserted into the fixed port (608) until the fixed insertion plate (606) abuts against the bottom limiting plate (601).

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