Gas ultrasonic flowmeter convenient to disassemble and clean

Abstract

The utility model relates to a gas ultrasonic flowmeter convenient to disassemble and clean. The transducer module is downwards inserted into a boss of the bottom fixing seat, a stand column is arranged on the bottom fixing seat, an L-shaped positioning plate is arranged on the side face of the transducer module, the stand column is inserted into a positioning hole in the L-shaped positioning plate, and the transducer module is transversely limited; a cylindrical boss is arranged in the middle meter body, a rotating baffle located on one side of the transducer module is elastically fixed to the cylindrical boss through a bolt and a spring gasket, the rotating baffle can rotate around the cylindrical boss, and the rotating baffle can be pressed above the transducer module after rotating to vertically limit the transducer module. According to the utility model, the rotating baffle plate and the L-shaped positioning plate are used for vertically and transversely limiting the transducer module, the transducer module is connected with the boss of the bottom fixing seat, and the deformation influence of hard connection on the module is reduced in a sealing ring matching manner, so that the structural interference is reduced, and the reliability of measured data is improved.

Description

Technical Field

[0001] The utility model relates to the field of gas ultrasonic flowmeters, in particular to a gas ultrasonic flowmeter which is easy to disassemble and clean. Background Art

[0002] Gas ultrasonic flowmeter is a flow measurement facility currently widely used in natural gas trade transfer. Its high accuracy level and low failure rate are favored by most users. The gas ultrasonic flow metering system is a measurement system composed of a variety of instruments, including gas ultrasonic flowmeter, pressure transmitter, temperature transmitter and flow integrator. The flow integrator obtains the actual operating flow, temperature, pressure and other parameters measured by the field flowmeter and combines the natural gas components to calculate the natural gas flow under standard conditions in real time. In actual use, the ultrasonic transducer flow channel module component undertakes the main metering work. Its fixing method and the cleanliness of the flow channel are important parameters that determine the accuracy of the measurement results.

[0003] In the existing literature on ultrasonic flowmeters that do not require front and rear straight pipe sections, for example, in the content disclosed in CN217687352U, the metering module is fixed to the meter body from the top using an adapter plate and bolts, and in the examples of the public specifications CN116448191A and CN113701834B, the metering module is also inserted from one side of the meter body and fixed to the meter body using bolts; when cleaning and replacing, the flow integrator seat and cover must be disassembled, and then the metering module is disassembled, and most of them are restricted in the disassembly direction, and the fixing method of hard connection with bolts may cause uneven force during installation, resulting in slight deformation of single- and dual-channel metering modules, asymmetry of left and right metering modules, and other problems, affecting the measurement accuracy; it is very necessary to design a method of fixing and installing the metering module that is not limited by the installation space, is convenient for disassembly and cleaning of the flow channel, and is lighter. Utility Model Content

[0004] In view of the problems existing in the prior art, the purpose of the utility model is to provide a technical solution for a gas ultrasonic flow meter which is easy to disassemble and clean.

[0005] The gas ultrasonic flowmeter which is easy to disassemble and clean comprises a meter body assembly and a flow integrator assembly, and is characterized in that the meter body assembly comprises an upper cover shell, an intermediate meter body, a lower cover shell and a transducer module, the flow integrator assembly is arranged above the upper cover shell, and a bottom fixing seat is arranged below the intermediate meter body; the transducer module is inserted downward into the boss of the bottom fixing seat, a column is arranged on the bottom fixing seat, an L-shaped positioning plate is arranged on the side of the transducer module, and the positioning hole on the L-shaped positioning plate is inserted into the column to laterally limit the transducer module; a cylindrical boss is arranged in the intermediate meter body, and a rotating baffle plate located on one side of the transducer module is elastically fixed on the cylindrical boss by bolts and spring washers, and the rotating baffle plate can rotate around the cylindrical boss, and can be pressed on the top of the transducer module after rotation to vertically limit the transducer module.

[0006] The gas ultrasonic flow meter which is easy to disassemble and clean is characterized in that sealing gaskets are arranged between the upper cover shell and the middle meter body, and between the middle meter body and the lower cover shell, and are connected by bolts.

[0007] The gas ultrasonic flow meter which is easy to disassemble and clean is characterized in that the bottom fixing seat is installed below the middle meter body by bolts and a sealing ring is arranged between the bottom fixing seat and the middle meter body.

[0008] The gas ultrasonic flowmeter which is easy to disassemble and clean is characterized in that a fixing seat O-ring is arranged between the boss of the bottom fixing seat and the transducer module.

[0009] The gas ultrasonic flow meter which is easy to disassemble and clean is characterized in that the transducer modules are arranged in one or more groups.

[0010] The wiring structure of the gas ultrasonic flowmeter is characterized in that a lead connection port is provided on the shell of the intermediate meter body, and the terminal connected to the transducer module passes through the lead connection port and is fixed by a nut. A wiring fixing block is provided outside the lead connection port, and the wiring fixing block is fixed to the intermediate meter body by bolts. The end of the wiring fixing block is connected to a wiring groove cover, and wiring grooves are provided on the surfaces of the intermediate meter body and the upper cover shell. The wiring groove cover and the wiring groove cooperate for wiring, and the flow integrator assembly and the transducer module are connected to transmit signals through external connecting wires, and the external connecting wires are provided in the wiring grooves.

[0011] The wiring structure of the gas ultrasonic flowmeter is characterized in that a sealing member is provided between the terminal and the lead connection port.

[0012] The wiring structure of the gas ultrasonic flowmeter is characterized in that the wiring groove is opened on the surface of the middle meter body and the upper cover shell on one side of the connecting fixing flange.

[0013] The wiring structure of the gas ultrasonic flowmeter is characterized in that the nut is a circular knife-edge nut.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1. Use the rotating baffle and L-shaped positioning plate to limit the transducer module vertically and horizontally. The transducer module is connected to the boss of the bottom fixing seat and the sealing ring is used to reduce the deformation effect of the hard connection on the module, reduce structural interference, and increase the reliability of the measurement data;

[0016] 2. The transducer module can be removed separately from the top by removing the rotating baffle;

[0017] 3. Loosen the bolts between the bottom fixing seat and the middle meter body to remove the transducer module from the bottom, which is suitable for the situation where there is inconvenient space for disassembly of the upper part of the meter during field work;

[0018] 4. The terminal of the transducer module is fixed on the middle meter body, making the transducer module independent from the upper cover, lower cover, and flow totalizer assembly. When disassembling and cleaning the module flow channel, there is no need to separate the flow totalizer assembly and the upper cover, which is convenient and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the appearance structure of the utility model;

[0020] Figure 2 It is an overall exploded view of the utility model;

[0021] Figure 3 This is a cross-sectional view of the transducer module fixing structure of the utility model;

[0022] Figure 4 It is a cross-sectional view of the transducer module terminal and meter body fixing structure of the utility model;

[0023] Figure 5 It is a top view of the internal transducer module;

[0024] Figure 6 It is a front view of fixing the internal transducer module;

[0025] Figure 7 This is a schematic diagram of external wiring.

[0026] In the figure: 1- meter body assembly, 2- flow totalizer assembly, 3- transducer module; 4 bottom fixing seat, 5 rotating baffle, 6 bottom fixing seat O-ring, 7 boss, 8 wiring fixing block, 9 external connecting wire, 10 sealing ring, 101 lower cover shell, 102 upper cover shell, 103 middle meter body, 10301 cylindrical boss, 301 terminal, 302 nut, 303 L-type positioning plate, 401 column. DETAILED DESCRIPTION

[0027] The utility model is further described below in conjunction with the accompanying drawings:

[0028] The utility model aims to provide a technical solution that can quickly disassemble and install a metering module in two directions, facilitates cleaning of a flow channel, and provides a new module fixing method.

[0029] A gas ultrasonic flowmeter that is easy to disassemble and clean, comprising a meter body component 1 and a flow totalizer component 2, the meter body component comprising an upper cover shell 102, an intermediate meter body 103, a lower cover shell 101 and a transducer module 3, sealing gaskets are arranged between the upper cover shell and the intermediate meter body, and between the intermediate meter body and the lower cover shell, and are connected by bolts, the flow totalizer component 2 is arranged above the upper cover shell 102, and the head of the flow totalizer component 2 is rotatable; a bottom fixing seat 4 is arranged below the intermediate meter body 103, the bottom fixing seat is installed below the intermediate meter body by bolts (the bolts will not come out), and a sealing ring 10 is arranged between the bottom fixing seat and the intermediate meter body; the transducer module 3 is inserted downward into the bottom fixing seat At the boss 7 of the seat 4, a fixed seat O-ring 6 is arranged between the boss 7 of the bottom fixed seat and the transducer module, a column 401 is arranged on the bottom fixed seat 4, an L-shaped positioning plate 303 is arranged on the side of the transducer module 3, and the positioning hole on the L-shaped positioning plate 303 is inserted into the column 401 to laterally limit the transducer module 3; a cylindrical boss 10301 is arranged in the middle body 103, and a rotating baffle 5 located on one side of the transducer module 3 is elastically fixed on the cylindrical boss 10301 by bolts and spring washers, and the rotating baffle 5 can rotate around the cylindrical boss 10301, and can be pressed on the top of the transducer module 3 after rotation to vertically limit the transducer module 3.

[0030] A lead connection port is provided on the shell of the intermediate meter body 103, and the terminal 301 connected to the transducer module passes through the lead connection port and is fixed by a nut 302. The nut is a round knife-edge screw, and a seal is provided between the terminal and the lead connection port to ensure the sealing performance in the cavity; a wiring fixing block 8 is provided outside the lead connection port, and the wiring fixing block 8 is fixed to the intermediate meter body 103 by bolts, and the end of the wiring fixing block 8 is connected to a wiring groove cover. Wiring grooves are provided on the surfaces of the intermediate meter body 103 and the upper cover shell 102, and the wiring groove cover cooperates with the wiring groove for wiring. The flow integrator assembly 2 and the transducer module 3 transmit signals through the external connecting line 9, and the external connecting line 9 is provided in the wiring groove; the wiring groove can be provided on the surface of the intermediate meter body and the upper cover shell on one side of the connecting fixing flange, and the transducer module is provided as one or more groups.

[0031] The utility model installs the transducer module on the bottom fixing seat of the middle table body, and the rotating baffle on the middle table body is pressed on the baffle of the transducer module to realize the upper pressing and fixing, the L-shaped positioning plate on the transducer module cooperates with the column on the bottom fixing seat to realize the side positioning, the lower part of the transducer module is plugged with the boss of the bottom fixing seat to realize the module limitation, and the sealing ring is used to realize the sealing at the connection between the transducer module and the bottom fixing seat; the wiring design is led out from the side of the middle table body, and is fixed by the terminal, the sealing part and the nut to realize the sealing of the cavity, and the wiring groove is opened on the middle table body, which cooperates with the wiring groove cover to realize the side wiring. When disassembly is required, first unscrew the bolts on the wiring fixing block that do not come out, pull out the plug connector inside, loosen the fixing nuts of the transducer module terminal, then open the upper cover or lower cover from the top or bottom, push aside the rotating baffle on the middle meter body or loosen the fixing bolts between the bottom fixing seat and the middle meter body to take it out; when installing, fix the terminal at the lead connection port with the fixing nut, tighten the bolts on the wiring fixing block that do not come out, screw on the fixing bolts of the bottom fixing seat or push back the rotating baffle on the middle meter body, and fix the bolts of the upper cover and the lower cover.

[0032] The transducer module of the utility model is not fixed inside the meter body by hard connection. The upper part is pressed and fixed by a rotating baffle installed on the middle meter body, and the left and right positioning of the module is realized by cooperation between the L-shaped positioning plate and the upper column of the bottom fixing seat, thereby realizing the convenience of disassembly of the transducer module. The transducer module realizes a structure that can be disassembled and taken in both upper and lower directions; and the upper cover shell, the lower cover shell, and the flow integrator assembly can be disassembled independently. Example

[0033] A gas ultrasonic flow meter which is easy to disassemble and clean comprises a flow totalizer component 2 and a meter body component 1. The flow totalizer component 2 and the meter body component 1 are connected by bolts and sealed by a sealing ring. The head of the flow totalizer component 2 is rotatable.

[0034] The meter body assembly 1 comprises an upper cover shell 102, a lower cover shell 101, and an intermediate meter body 103, inside which two transducer modules 3 are placed horizontally. For specific installation methods, see the attached Figure 3 , 4 、5.

[0035] Attached Figure 3 The middle rotating baffle 5 is fixed to the cylindrical boss 10301 on the middle body 103 by means of a bolt assembly and a spring washer.

[0036] Attached Figure 4The middle transducer module 3 is inserted downward into the boss 7 of the bottom fixing seat 4, and is limited by the column 401 on the bottom fixing seat 4 and the L-shaped positioning plate 303, and is sealed with the fixing seat O-ring 6 on the sealing groove at the boss of the bottom fixing seat 4. The outlet side of the bottom fixing seat 4 is fixed to the lower side of the middle meter body 103 by four screws that do not come out, and the contact surface position is sealed by the sealing ring 10; the terminal 301 of the transducer module passes through the lead connection port on the left side of the middle meter body 103, and is tightened and fixed by the outer circular knife-edge nut 302. The terminal 301 and the inner contact surface of the middle meter body 103 are sealed with a sealing ring, and attached Figure 5 , Attachment Figure 6 The figure shows the overall fixing method of the internal dual-channel metering module of the utility model.

[0037] Attached Figure 7 The wiring fixing block 8 on the middle side is fixed to the middle meter body 103 by bolts, and the female head of the terminal 301 is inserted into the inside thereof, and the rear end is screwed on the integrator seat using the external connecting wire 9, and the line is sent into the flow integrator assembly 2 to achieve line connection between the transducer module 3 and the flow integrator assembly 2. The notch surface is located on the flange connection surface and the upper cover shell surface, and after avoiding the diameter range of the national standard flange for fixed connection of the flow meter, the fixing block has no installation and disassembly space restrictions.

[0038] The working process of the utility model is as follows: the flow meter is fixed to both ends of the pipeline through flanges, and the flow totalizer can work normally. When the transducer module needs to be checked and taken out for cleaning, replacement and calibration within the specified time, the side wiring fixing block can be opened, the terminal docking plug can be unplugged, and the two circular knife-edge fixing nuts can be loosened. This step disconnects the transducer module from the top flow totalizer assembly wiring and separates it from the middle meter body; if the internal transducer module needs to be disassembled from the top, unscrew the upper cover shell fixing bolts, and then After that, push aside the rotating baffle and directly take out the transducer module; when it is necessary to disassemble from below, unscrew the fixing bolts of the lower cover, continue to unscrew the four bolts on the bottom fixing seat, and pull out the transducer module together with the bottom fixing seat; when installing, first send the terminal connector into the lead connection port on the middle meter body, fix it with a round knife-edge fixing nut, put the transducer module in, push back the rotating baffle or fix the bottom bolts, then tighten the fixing bolts of the upper or lower cover, and finally fix the side wiring fixing block. It can cope with various on-site environments, and can realize that the transducer module can be removed without loosening the flow meter and pipeline fixing flanges, and one side of the upper and lower sides is unobstructed. The main flow integrator assembly and the upper cover can be integrated, and there is no need to frequently disassemble when replacing, and the transducer module can be replaced and cleaned in both directions.

Claims

1. A gas ultrasonic flow meter that is easy to disassemble and clean, comprising a meter body assembly and a flow totalizer assembly, characterized in that The meter body assembly includes an upper cover shell, an intermediate meter body, a lower cover shell and a transducer module. The flow integrator assembly is arranged above the upper cover shell, and a bottom fixing seat is arranged below the intermediate meter body; the transducer module is downwardly inserted into the boss of the bottom fixing seat, and a column is arranged on the bottom fixing seat. An L-shaped positioning plate is arranged on the side of the transducer module, and the positioning hole on the L-shaped positioning plate is inserted into the column to laterally limit the transducer module; a cylindrical boss is arranged in the intermediate meter body, and a rotating baffle located on one side of the transducer module is elastically fixed on the cylindrical boss by bolts and spring washers, and the rotating baffle can rotate around the cylindrical boss. After rotation, it can be pressed on the top of the transducer module to vertically limit the transducer module.

2. A gas ultrasonic flowmeter that is easy to disassemble and clean according to claim 1, characterized in that Sealing gaskets are arranged between the upper cover shell and the middle meter body, and between the middle meter body and the lower cover shell, and they are connected by bolts.

3. A gas ultrasonic flowmeter that is easy to disassemble and clean according to claim 1, characterized in that The bottom fixing seat is installed below the middle meter body through bolts, and a sealing ring is arranged between the bottom fixing seat and the middle meter body.

4. A gas ultrasonic flowmeter that is easy to disassemble and clean according to claim 1, characterized in that A fixing seat O-ring is arranged between the boss of the bottom fixing seat and the transducer module.

5. A gas ultrasonic flowmeter that is easy to disassemble and clean according to claim 1, characterized in that The transducer modules are arranged in one or more groups.

6. A gas ultrasonic flowmeter that is easy to disassemble and clean as claimed in claim 1, characterized in that A lead connection port is provided on the shell of the intermediate meter body, and the terminal connected to the transducer module passes through the lead connection port and is fixed by a nut. A wiring fixing block is provided outside the lead connection port, and the wiring fixing block is fixed to the intermediate meter body by bolts. The end of the wiring fixing block is connected to a wiring groove cover. Wiring grooves are provided on the surfaces of the intermediate meter body and the upper cover shell, and the wiring groove cover cooperates with the wiring groove for wiring. The flow integrator component and the transducer module are connected to transmit signals through external connecting wires, and the external connecting wires are provided in the wiring grooves.

7. A gas ultrasonic flowmeter that is easy to disassemble and clean according to claim 6, characterized in that A sealing member is arranged between the terminal and the lead connection port.

8. The gas ultrasonic flowmeter that is easy to disassemble and clean according to claim 6, characterized in that The wiring groove is arranged on the surface of the middle body and the upper cover shell connected to one side of the fixing flange.

9. A gas ultrasonic flowmeter that is easy to disassemble and clean according to claim 6, characterized in that The nut is a round knife-edge nut.

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