CN213632255U - Membrane type flowmeter - Google Patents

Membrane type flowmeter Download PDF

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Publication number
CN213632255U
CN213632255U CN202023199312.XU CN202023199312U CN213632255U CN 213632255 U CN213632255 U CN 213632255U CN 202023199312 U CN202023199312 U CN 202023199312U CN 213632255 U CN213632255 U CN 213632255U
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China
Prior art keywords
flowmeter
pressure sensor
detection
cavity
temperature
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CN202023199312.XU
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Chinese (zh)
Inventor
银红春
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Sichuan Shugu Instrument Technology Co ltd
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Sichuan Shugu Instrument Technology Co ltd
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Priority to CN202023199312.XU priority Critical patent/CN213632255U/en
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Abstract

The utility model provides a diaphragm type flowmeter, including the flowmeter body that is used for detecting basic table gas circulation, the flowmeter body disposes the connecting piece, and basic table is connected to this connecting piece, disposes the cavity with external intercommunication in the connecting piece, disposes the forwardding PCB board of this body coupling with the flowmeter in the cavity, disposes the atmospheric pressure meter on the forwardding PCB board, the connecting piece disposes the temperature and pressure sensor that the encapsulation is good, and this temperature and pressure sensor inlays and locate basic table gas intracavity, disposes in the temperature and pressure sensor and communicates with each other with basic table gas chamber and detect the chamber, detects the intracavity and disposes pressure sensor, pressure sensor connects the forwardding PCB board. The utility model discloses better measurement accuracy has, and has better resistance to pressure to adaptable measurement work under the adverse circumstances of high temperature high pressure.

Description

Membrane type flowmeter
Technical Field
The utility model relates to a gas measurement field particularly, relates to a diaphragm type flowmeter.
Background
At present, the pressure correction of the gas meter adopts a uniform correction standard no matter where. On the one hand, the gas can change because the different gas volumetric flow of atmospheric pressure at different altitudes, and on the other hand, different gas table operating pressure is different, also influences the volumetric flow of gas. In the prior art, the patent name is as follows, with the application number being CN 201910111748.1: "a pressure correction method and diaphragm type gas table", carry out gas flow atmospheric pressure through obtaining atmospheric pressure parameter and revise, thereby eliminated the atmospheric pressure difference, carry out accurate measurement to the gas flow, however in actual flow detection, need dispose the sensor respectively to gas table external gas pressure and gas table internal gas pressure and measure, however the higher environment of gas table internal gas pressure is abominable, it is not enough to appear sensor installation seal stability when carrying out pressure measurement in the gas table easily, situation such as sensor information transmission wire drops easily, and then how to guarantee the stable transmission of leakproofness with information when measuring gas table internal flow, be the problem that at present awaits the solution urgently.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a diaphragm type flowmeter, it measures atmospheric pressure and configuration pressure sensor through configuration atmospheric pressure meter and measures the gas intracavity air pressure value to eliminate the influence of atmospheric pressure difference, and through configuration temperature and pressure sensor, have better resistance to pressure when measured data is accurate, signal transmission is stable.
The embodiment of the utility model discloses a realize through following technical scheme: the utility model provides a diaphragm type flowmeter, is including the flowmeter body that is used for detecting basic table gas circulation, the flowmeter body disposes the connecting piece, and basic table is connected to this connecting piece, disposes the cavity with external intercommunication in the connecting piece, disposes the forwardding PCB board with flowmeter body coupling in the cavity, disposes the atmospheric pressure meter on the forwardding PCB board, the connecting piece disposes the temperature and pressure sensor, and this temperature and pressure sensor inlays and locates basic table gas intracavity, disposes in the temperature and pressure sensor with the communicating detection chamber in basic table gas chamber, and the detection intracavity disposes pressure sensor, pressure sensor connects the forwardding PCB board.
Further, warm pressure sensor includes intercommunication portion and detection portion, disposes the sealing member between intercommunication portion and the detection portion, disposes the through-hole in the intercommunication portion and its one end intercommunication cavity of keeping away from the detection portion, detect the chamber and dispose in the detection portion, detect the intracavity and still dispose connecting circuit board, the last a plurality of probes that dispose of connecting circuit board, the one end that connecting circuit board was kept away from to this probe runs through the sealing member and gets into the through-hole and forwards the PCB board through the wire connection.
Further, a temperature sensor is also arranged on the connecting circuit board.
Further, the detection portion is provided with a communication hole that communicates the base meter gas chamber and the detection chamber.
Further, the connecting piece is provided with a connecting flange, and the connecting flange is detachably arranged on the base meter.
Further, the flange is provided with a mounting hole matched with the temperature and pressure sensor, the mounting hole is communicated with the cavity, and the temperature and pressure sensor is detachably arranged in the mounting hole.
Further, the temperature and pressure sensor is connected to the mounting hole in a threaded mode.
The utility model discloses technical scheme has following advantage and beneficial effect at least:
(1) the utility model realizes the detection of the atmospheric pressure of the base meter by configuring the atmospheric pressure meter, and then transmits the measured atmospheric pressure value to the flowmeter body by the forwarding PCB; through encapsulating pressure sensor in temperature and pressure sensor, realized the sealed detection to gas chamber internal gas pressure, thereby the gas chamber internal gas pressure data that survey are accurate, then the gas chamber internal pressure data that survey transmit the flowmeter body through forwardding the PCB board, the flowmeter body carries out pressure compensation through the atmospheric pressure value that records and the gas intracavity gas pressure value and calculates, thereby calculate and obtain gas chamber flow, higher accuracy has, and through encapsulating pressure sensor, higher withstand voltage temperature resistant ability has.
(2) The utility model discloses a set up probe and circuit board connection pressure sensor, be connected with the wire and compare, realized being connected with the one-to-one of circuit board, be difficult for droing, be difficult for twining when having better intensity, also use the wire to be connected to and transmit the PCB board for the probe and provide convenience.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is an external view of the present invention;
fig. 2 is a cross-sectional view of the present invention;
fig. 3 is a schematic structural diagram of the medium temperature and pressure sensor of the present invention;
fig. 4 is a sectional view of the medium temperature and pressure sensor of the present invention;
fig. 5 is another cross-sectional view of the medium temperature and pressure sensor of the present invention.
Icon: 1-flowmeter body, 2-base meter, 3-connecting piece, 31-cavity, 32-retransmission PCB, 33-atmospheric pressure meter, 4-temperature and pressure sensor, 41-detection cavity, 42-pressure sensor, 43-communicating part, 44-detection part, 45-sealing piece, 46-through hole, 47-communicating hole, 48-connecting circuit board, 49-probe, 5-temperature sensor, 6-connecting flange and 7-thread.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship which is usually placed when the product of this application is used, the description is only for convenience of description and simplification, but the indication or suggestion that the device or element to be referred must have a specific orientation, be constructed in a specific orientation and be operated is not to be construed as limiting the present invention.
In the description of the present invention, it should be further noted that unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Examples
Referring to fig. 1 to 5, the present embodiment provides a membrane flowmeter, including a flowmeter body 1 for detecting a gas flow rate of a base meter 2, where it is to be noted that the flowmeter body 1 provides a flow rate calculation function, and the flowmeter body 1 can be obtained in the market, and a detailed structural principle thereof is not described again, and in addition, the base meter 2 is a measurement meter configured in a gas cavity, and a detailed structural principle thereof is not described again; the flowmeter body 1 is provided with a connecting piece 3, the connecting piece 3 is cylindrical, the upper end of the connecting piece 3 is connected with the flowmeter body 1, the lower end of the connecting piece 3 is installed on the base meter 2, a cavity 31 communicated with the outside is arranged in the connecting piece 3, a forwarding PCB 32 connected with the flowmeter body 1 is arranged in the cavity 31, specifically, the forwarding PCB 32 is connected to a chip in the flowmeter body 1 through a lead, the forwarding PCB 32 is used for transmitting signal data, an atmospheric pressure gauge 33 is arranged on the forwarding PCB 32, the atmospheric pressure gauge 33 is arranged, the atmospheric pressure at the base meter 2 is detected, and then the measured atmospheric pressure value is transmitted to the flowmeter body 1 through the forwarding PCB 32; the connecting piece 3 is provided with a temperature and pressure sensor 4, the temperature and pressure sensor 4 is embedded in a gas cavity of the base meter 2, a detection cavity 41 communicated with the gas cavity of the base meter 2 is arranged in the temperature and pressure sensor 4, a pressure sensor 42 is arranged in the detection cavity 41, and the pressure sensor 42 is connected with the forwarding PCB 32. Through encapsulating pressure sensor 42 in temperature and pressure sensor 4, realized the sealed detection to gas cavity internal gas pressure, thereby the gas cavity internal gas pressure data that measure is accurate, then the gas cavity internal pressure data that measure transmits flowmeter body 1 through forwardding PCB board 32, flowmeter body 1 carries out pressure compensation through the atmospheric pressure value that measures and the gas cavity internal gas pressure value and calculates, thereby calculate and obtain gas cavity flow, higher accuracy has, and through encapsulating pressure sensor 42, higher withstand voltage temperature resistant ability has.
In the present embodiment, the warm pressure sensor 4 includes a communication portion 43 and a detection portion 44, a sealing member 45 is disposed between the communication portion 43 and the detection portion 44, and the communication portion 43 and the detection portion 44 are sealed and separated by the sealing member 45, so that the sealing performance is good; a through hole 46 is arranged in the communication part 43, one end of the communication part, which is far away from the detection part 44, is communicated with the cavity, the detection cavity 41 is arranged in the detection part 44, the detection part 44 is provided with a communication hole 47, specifically, the communication hole 47 is arranged at the bottom end of the detection part 44, the communication hole 47 is communicated with the gas cavity of the basic meter 2 and the detection cavity 41, a connecting circuit board 48 is also arranged in the detection cavity 41, a plurality of probes 49 are arranged on the connecting circuit board 48, specifically, the probes 49 are welded on the connecting circuit board 48, one end of the probe 49, which is far away from the connecting circuit board 48, penetrates through the sealing piece 45, enters the communication hole 47 and is connected with the transfer PCB 32 through a lead, specifically, when the probe 49; probe 49 is used for the transmission of signal, connects pressure sensor 42 through setting up probe 49 and connecting circuit board 48, compares with the wire connection, has realized being connected with the one-to-one of connecting 48 circuit boards, is difficult for droing, is difficult for twining when having better intensity, also uses the wire to be connected to and has forwarded PCB board 32 for probe 49 and provides convenience, is convenient for correspond the connection.
In this embodiment, the connection circuit board 48 is further configured with a temperature sensor 5, the temperature sensor 5 is configured to detect the temperature in the gas cavity, the temperature detection data is transmitted to the forwarding PCB 32 through the connection circuit board 48 and the probe 49, and is transmitted to the flowmeter body 1 through the forwarding PCB 32, and the flowmeter body 1 corrects the flow rate according to the temperature measurement data.
In this embodiment, in order to facilitate the installation of the membrane flowmeter, the connecting member 3 is provided with a connecting flange 6, and the connecting flange 6 is detachably disposed on the base table 2. The flange is provided with a mounting hole matched with the temperature and pressure sensor 4, the mounting hole is connected with the cavity 31, and the temperature and pressure sensor 4 is detachably arranged in the mounting hole. Warm pressure sensor 4 threaded connection is in the mounting hole, and is concrete, the intercommunication portion 43 outer wall disposes screw thread 7, warm pressure sensor 4 passes through screw thread 7 to be installed in the mounting hole, and the installation is simple and convenient.
When the film type gas flowmeter is used specifically, the film type gas flowmeter is arranged on the upper portion of a gas cavity of a base meter 2, a detection portion 44 at the bottom of a temperature and pressure sensor 4 is located in the gas cavity, a communication hole 47 communicates the gas cavity with a detection cavity 41, so that the temperature and the air pressure in the detection cavity 41 are the same as the temperature and the air pressure in the gas cavity, the air pressure and the temperature in the gas cavity are detected through a pressure sensor 42 and a temperature sensor 5, the detected air pressure and temperature data are transmitted to a forwarding PCB 32 through a probe 49 and then transmitted to a flowmeter body 1 through the forwarding PCB 32, meanwhile, an atmospheric pressure meter 33 located in the cavity 31 detects an external atmospheric pressure value, the detected atmospheric pressure value is transmitted to the flowmeter body 1 through the forwarding PCB 32, and finally the flowmeter body 1 obtains the gas flow through calculation of the external atmospheric pressure value, the gas cavity pressure value and the temperature value.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (7)

1. A membrane flowmeter comprising a flowmeter body (1) for detecting the gas flow of a base meter (2), characterized in that: flowmeter body (1) disposes connecting piece (3), and basic table (2) are connected in this connecting piece (3), dispose cavity (31) with external intercommunication in connecting piece (3), dispose in cavity (31) and forwardding PCB board (32) of being connected with flowmeter body (1), dispose atmospheric pressure meter (33) on forwardding PCB board (32), connecting piece (3) dispose warm-pressing sensor (4), and this warm-pressing sensor (4) inlays and locates in basic table (2) gas chamber, dispose in warm-pressing sensor (4) with the communicating detection chamber (41) in basic table (2) gas chamber, dispose pressure sensor (42) in detection chamber (41), pressure sensor (42) are connected and are forwardded PCB board (32).
2. The membrane flowmeter of claim 1, wherein the thermal pressure sensor (4) comprises a communication part (43) and a detection part (44), a sealing member (45) is arranged between the communication part and the detection part (44), a through hole (46) is arranged in the communication part, one end of the communication part, which is far away from the detection part (44), is communicated with the cavity (31), the detection cavity (41) is arranged in the detection part (44), a connection circuit board (48) is further arranged in the detection cavity (41), a plurality of probes (49) are arranged on the connection circuit board (48), and one end, which is far away from the connection circuit board (48), of each probe (49) penetrates through the sealing member (45) to enter the through hole (46) and is connected with the forwarding PCB (32) through a lead.
3. A membrane meter according to claim 2, characterized in that a temperature sensor (5) is also arranged on the connection circuit board (48).
4. A diaphragm flowmeter according to claim 3, wherein the detection portion (44) is provided with a communication hole (47), and both ends of the communication hole (47) communicate with the gas chamber and the detection chamber (41) of the base meter (2), respectively.
5. A membrane meter according to any of claims 1-4, wherein the connection piece (3) is provided with a connection flange (6), and wherein the connection flange (6) is detachably arranged on the base meter (2).
6. A membrane meter according to claim 5, wherein the flange is provided with a mounting hole for accommodating the temperature and pressure sensor (4), the mounting hole is connected with the cavity (31), and the temperature and pressure sensor (4) is detachably arranged in the mounting hole.
7. A membrane meter according to claim 6, wherein the temperature and pressure sensor (4) is threadedly attached (7) to the mounting hole.
CN202023199312.XU 2020-12-25 2020-12-25 Membrane type flowmeter Active CN213632255U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202023199312.XU CN213632255U (en) 2020-12-25 2020-12-25 Membrane type flowmeter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202023199312.XU CN213632255U (en) 2020-12-25 2020-12-25 Membrane type flowmeter

Publications (1)

Publication Number Publication Date
CN213632255U true CN213632255U (en) 2021-07-06

Family

ID=76640600

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202023199312.XU Active CN213632255U (en) 2020-12-25 2020-12-25 Membrane type flowmeter

Country Status (1)

Country Link
CN (1) CN213632255U (en)

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