Shell assembly assembling structure of ultrasonic gas meter

Abstract

The utility model relates to a shell assembly assembling structure of an ultrasonic gas meter. The gas meter is characterized in that the shell is composed of a front cover plate and a rear shell, the rear shell is of a groove-shaped structure, the front cover plate is arranged in front of the rear shell, a square hole connected with a wire in a penetrating mode is formed in the upper portion of the front cover plate, and components in the gas meter are all installed in the rear shell. The control valve is firstly installed in a valve body cylinder, and the valve body cylinder is connected with a clamping groove of the rear shell, so that screw fixation is avoided, and the production efficiency is improved; the metering module is connected with the adapter, the adapter is then connected with the rear shell, the aluminum meter shell is adopted, the air outlet pipe and the rear shell can be integrally cast, and the air outlet pipe is a part of the shell, so that the air outlet pipe is saved, and the cost is saved; the wire connector is fixed on the groove in the middle of the rear shell, during production circulation, only the rear shell needs to be circulated, the front cover plate does not need to be considered, and after all parts in the rear shell are installed, the front cover plate and the rear shell are fixed through screws, so that production is greatly facilitated, and efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of shell assembly assembly structure of ultrasonic gas meter. BACKGROUND

[0002] In the field of ultrasonic gas meter, the structure of ultrasonic gas meter is less in front and back, even if there is, it is also made of steel. Mainly control valve and metering module are fixed on the rear shell, while the wire connector connecting the control valve and the metering module is fixed on the front cover plate, which leads to the simultaneous transfer of the rear shell and the front cover plate during production, which is very inconvenient. At the same time, the control valve and the metering module need to be fixed on the rear shell with screws, and a separate gas outlet pipe is needed. There is also a kind of oblique cutting structure of the meter body, such as CN202323280173.7 ultrasonic gas meter with anti-electromagnetic interference, control valve, metering module, and wire connector of control valve and metering module are fixed on the front shell. Although it solves the problem of production and transportation, it is not conducive to automatic production of robot hand when installing internal components and assembling front and rear shells. Because the meter shell is an oblique cutting structure, a special auxiliary tool is needed to flatten the meter body before assembly. All of the above greatly reduces production efficiency and increases cost. SUMMARY

[0003] In view of the problems existing in the prior art, the purpose of the utility model is to provide a kind of shell assembly assembly structure of ultrasonic gas meter.

[0004] The shell assembly assembly structure of the ultrasonic gas meter is characterized by a front cover plate and a rear shell, the rear shell is a groove-shaped structure, the front cover plate is arranged in front of the rear shell, the square hole for connecting the wire is arranged above the front cover plate, the components inside the gas meter are installed in the rear shell, and the gas inlet and outlet of the gas meter are arranged above the rear shell.

[0005] The shell assembly assembly structure of the ultrasonic gas meter is characterized by the components inside the gas meter, including control valve, metering module, wire connector and gas outlet pipe, the control valve is installed at the gas inlet of the rear shell, the metering module is installed at the gas outlet of the rear shell, the wire connector connecting the control valve and the metering module is fixed on the upper part of the rear shell, after the assembly of the control valve, the metering module and the wire connector, the wire of the wire connector is pulled out from the square hole, and then the front cover plate is fixed, which completes the assembly of the entire shell.

[0006] The shell assembly assembly structure of the ultrasonic gas meter is characterized in that a recess is arranged at the middle position of the upper portion of the rear shell, the bottom of the recess is provided with two through holes for respectively installing the control valve wire connector and the metering module wire connector, the control valve wire is connected to the control valve wire connector, and the metering module wire is connected to the metering module wire connector.

[0007] The shell assembly assembly structure of the ultrasonic gas meter is characterized in that the square hole above the front cover plate is opposite to the recess of the rear shell, and the wires on the control valve wire connector and the metering module wire connector pass through the square hole and are connected to the control components outside the meter body.

[0008] The shell assembly assembly structure of the ultrasonic gas meter is characterized in that the control valve is arranged in a valve body cylinder, the inner side of the air inlet of the rear shell is provided with a clamping groove, the valve body cylinder is provided with a waist-shaped circular truncated cone on the valve body connector, during installation, the straight edge of the waist-shaped circular truncated cone is parallel to the clamping groove, the valve body connector is placed into the air inlet, the valve body cylinder is rotated by 90 degrees, the waist-shaped circular truncated cone on the valve body connector is clamped in the clamping groove, and thus the installation of the control valve is completed.

[0009] The shell assembly assembly structure of the ultrasonic gas meter is characterized in that the air outlet pipe and the rear shell are integrally formed.

[0010] The shell assembly assembly structure of the ultrasonic gas meter is characterized in that the metering module is connected with the air outlet pipe through an adapter pipe.

[0011] The shell assembly assembly structure of the ultrasonic gas meter is characterized in that a sealing ring is arranged between the rear shell and the front cover plate.

[0012] The shell assembly assembly structure of the ultrasonic gas meter is characterized in that the front cover plate and the rear shell are made of aluminum material.

[0013] The control valve and the metering module are installed on the rear shell, the metering module is first connected with an adapter pipe, the adapter pipe is then connected with the air outlet pipe of the rear shell, the air outlet pipe and the rear shell are integrally formed by casting, the air outlet pipe and the rear shell are integrally cast by adopting aluminum material, the air outlet pipe is a part of the shell, so that the air outlet pipe is saved and the cost is saved; the control valve is first installed in a valve body cylinder, the valve body cylinder is connected with the clamping groove of the rear shell, so that screw fixing is avoided, the production efficiency is improved, and the valve seal structure cannot be seen from the outside of the meter; the wire connector for connecting the control valve and the metering module is fixed in the upper recess in the middle of the rear shell, during production circulation, only the rear shell needs to be circulated, the front cover plate does not need to be circulated, the front cover plate and the rear shell are fixed integrally by using screws after circulation is completed, production is facilitated, and the efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is a top view of the present application;

[0015] Figure 2 is a front sectional view of the present application;

[0016] Figure 3 is a side sectional view of the present application;

[0017] Figure 4 is a top view of the valve body cylinder of the present application;

[0018] In the figure: 1 - rear shell; 2 - front cover plate; 3 - control valve; 4 - metering module; 5 - recess; 6 - control valve wire connector; 7 - metering module wire connector; 8 - square hole; 9 - valve body cylinder; 10 - clamping groove; 11 - air outlet pipe; 12 - adapter pipe; 13 - sealing ring; 14 - waisted circular truncated cone. DETAILED DESCRIPTION

[0019] The present application will be further described below in conjunction with the accompanying drawings of the specification:

[0020] A shell assembly assembling structure of an ultrasonic gas meter, the shell is composed of two parts, which are divided into a front cover plate 2 and a rear shell 1, both of which are made of aluminum material, the rear shell 1 is a groove-shaped structure, the front cover plate 2 is arranged in front of the rear shell, a square hole 8 for penetrating the wire is arranged above the front cover plate 2, the components inside the gas meter are all installed in the rear shell 1, the air inlet and the air outlet are arranged above the rear shell 1, such as Figure 1 , the left side is the air inlet, and the right side is the air outlet.

[0021] The components inside the gas meter include a control valve 3, a metering module 4, a wire connector and an air outlet pipe 11, the control valve 3 is installed at the air inlet of the rear shell 1, the metering module 4 is installed at the air outlet of the rear shell 1, the wire connector connecting the control valve 3 and the metering module 4 is fixed to the upper part of the middle of the rear shell, after the control valve, the metering module and the wire connector are assembled, the wire of the wire connector is penetrated out of the square hole 8, and then the front cover plate 2 is fixed, thereby completing the assembly of the entire shell.

[0022] A recess 5 is arranged at the middle position of the upper part of the rear shell 1, two through holes are arranged at the bottom of the recess 5 and are used for installing the control valve wire connector 6 and the metering module wire connector 7 respectively, the wire of the control valve is connected to the control valve wire connector, and the wire of the metering module is connected to the metering module wire connector; the square hole 8 above the front cover plate 2 is opposite to the recess 5 of the rear shell, and the wires on the control valve wire connector and the metering module wire connector are penetrated through the square hole and connected with the control components outside the meter body.

[0023] The control valve 3 is arranged in a valve body cylinder 9, and the valve seal structure is not visible from the outside of the shell; a clamping groove 10 is arranged on the inner side of the air inlet of the rear shell, and a waist-shaped circular platform 14 is arranged on the valve body connecting pipe of the valve body cylinder; during installation, the straight edge of the waist-shaped circular platform 14 is parallel to the clamping groove 10, the valve body connecting pipe is placed into the air inlet, the valve body cylinder is rotated by 90 degrees, the waist-shaped circular platform on the valve body connecting pipe is clamped in the clamping groove, and the installation of the control valve is completed, thereby avoiding screw fixing.

[0024] The metering module 4 is connected with the air outlet pipe 11 through the adapter pipe 12, the air outlet pipe 11 is directly cast on the rear shell, that is, the air outlet pipe is integrally formed with the rear shell, the material of the air outlet pipe is saved, and the plastic part is avoided from being visible from the outside of the shell.

[0025] Specific installation process is as follows: the control valve 3 is installed in the valve body cylinder 9, the valve body cylinder 9 has a waist-shaped circular platform 14, correspondingly, the inner side of the air inlet of the rear shell has a clamping groove 10, during installation, the straight edge of the waist-shaped circular platform 14 on the valve body cylinder 9 is parallel to the clamping groove, the valve body connecting pipe is placed into the air inlet, the straight edge on the valve body cylinder 9 is inserted into the air inlet of the rear shell 1, then the valve body cylinder 9 is rotated by 90 degrees, the valve body cylinder 9 is clamped in the clamping groove, and the installation is completed; then the control valve wire connector 6 is installed on a through hole in the upper recess 5 of the rear shell 1;

[0026] After the metering module 4 is connected and fixed with the adapter pipe 12, the metering module 4 is installed on the air outlet pipe 11 of the rear shell 1, and then the metering module wire connector 7 is installed on the other through hole in the upper recess 5 of the rear shell 1;

[0027] Finally, the sealing ring 13 is placed in the recess in the front part of the rear shell 1, the wires on the control valve wire connector 6 and the metering module wire connector 7 are inserted through the square hole 8 on the front cover plate 2, then the front cover plate 2 and the rear shell 1 are attached, finally, the front cover plate 2 and the rear shell 1 are fixed and integrated by screws, and the installation of the entire ultrasonic wave fuel gas meter shell is completed.

Claims

1. An assembly structure of a housing assembly of an ultrasonic gas meter, characterized by The shell is composed of a front cover plate and a rear shell, the rear shell is a groove-shaped structure, the front cover plate is arranged at the front of the rear shell, a square hole for passing through the wires is arranged on the front cover plate, the components inside the gas meter are all installed in the rear shell, and the gas inlet and the gas outlet of the gas meter are arranged above the rear shell.

2. The housing assembly of an ultrasonic gas meter according to claim 1, wherein The components inside the gas meter include a control valve, a metering module, a wire connector and an air outlet pipe, the control valve is installed at the gas inlet of the rear shell, the metering module is installed at the gas outlet of the rear shell, the wire connector connecting the control valve and the metering module is fixed to the upper part of the middle of the rear shell, after the control valve, the metering module and the wire connector are assembled, the wires of the wire connector are passed out of the square hole, and then the front cover plate is fixed, so that the assembly of the whole shell is completed.

3. The housing assembly of an ultrasonic gas meter according to claim 2, wherein A groove is arranged at the middle position of the upper part of the rear shell, two through holes are arranged at the bottom of the groove and are used for installing the wire connectors of the control valve and the metering module respectively, the wires of the control valve are connected to the wire connector of the control valve, and the wires of the metering module are connected to the wire connector of the metering module.

4. The housing assembly of claim 3, wherein The square hole on the front cover plate is opposite to the groove of the rear shell, and the wires on the wire connectors of the control valve and the metering module are passed through the square hole and connected to the control components outside the meter body.

5. The housing assembly of claim 2, wherein The control valve is arranged in a valve body cylinder, a clamping groove is arranged on the inner side of the gas inlet of the rear shell, and a waisted circular cone is arranged on the valve body connecting pipe of the valve body cylinder.

6. The housing assembly of claim 2, wherein The air outlet pipe and the rear shell are integrally formed.

7. The housing assembly of claim 2, wherein The metering module is connected with the air outlet pipe through a adapter pipe.

8. The housing assembly of claim 1, wherein A sealing ring is arranged between the rear shell and the front cover plate.

9. The housing assembly of claim 1, wherein The front cover plate and the rear shell are both made of aluminum.

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