US-12618700-B2 - Anti-interference structure for ultrasonic gas meter

US12618700B2US 12618700 B2US12618700 B2US 12618700B2US-12618700-B2

Abstract

An anti-interference structure for an ultrasonic gas meter includes an upper housing and a lower housing. A gas flow channel is fixedly provided in the upper housing. A side of the gas flow channel is fixedly provided with a control box. According to the anti-interference structure for the ultrasonic gas meter, in practical work, gas can enter the gas flow channel, and a signal sensor inside the gas flow channel can detect external signals. When a signal is detected, a motor is started to drive a bidirectional threaded rod to rotate. Thus, two sealing elements are driven to move in opposite directions so as to isolate the flowing gas and prevent it from continuing to flow. Then, the signal sensor sends a signal to notify personnel of inspection. A shielding layer can effectively isolate the external signal, thereby preventing the measurement accuracy from being affected by the external signal.

Inventors

Haijun REN
Shihua Li
Ronghua Xu
Wenjun Wang

Assignees

ZENNER METERING TECHNOLOGY (SHANGHAI) LTD.

Dates

Publication Date: 20260505
Application Date: 20231215
Priority Date: 20230911

Claims (7)

1 . An anti-interference structure for an ultrasonic gas meter, comprising an upper housing and a lower housing, wherein a gas flow channel is fixedly provided in the upper housing; a side of the gas flow channel is fixedly provided with a control box; a side of an outer surface of the gas flow channel is fixedly provided with a shielding layer; and a side of an interior of the gas flow channel is fixedly provided with a signal sensor, wherein a first side of an interior of the control box is movably provided with a bidirectional threaded rod, and a second side of the interior of the control box is fixedly provided with a sliding rod; two sides of an outer surface of the bidirectional threaded rod are respectively movably connected to two sealing elements, and the two sealing elements are movably connected to the sliding rod; a side of an outer surface of the control box is fixedly provided with a motor; and an output end of the motor is fixedly connected to the bidirectional threaded rod.
2 . The anti-interference structure for the ultrasonic gas meter according to claim 1 , wherein the outer surface of the bidirectional threaded rod is provided with two opposite threaded grooves.
3 . The anti-interference structure for the ultrasonic gas meter according to claim 1 , wherein a side of an interior of the control box is provided with a driving groove; a bearing is fixedly provided in the driving groove; and the bidirectional threaded rod is fixedly connected to the bearing.
4 . The anti-interference structure for the ultrasonic gas meter according to claim 1 , wherein a side of each of the two sealing elements is fixedly provided with a sealing layer; and a side of a first sealing element of the two sealing elements is fixedly provided with a connecting element, and a side of a second sealing element of the two sealing elements is provided with a connecting groove.
5 . The anti-interference structure for the ultrasonic gas meter according to claim 1 , wherein the upper housing comprises a fixing plate; a bottom surface of the upper housing is fixedly provided with a fixing element; a top surface of the lower housing is provided with a fixed groove; a side of the fixing plate is movably connected to a plurality of connecting bolts; and two sides of each of the upper housing and the lower housing are respectively provided with a plurality of connecting holes.
6 . The anti-interference structure for the ultrasonic gas meter according to claim 1 , wherein a sound insulation layer is fixedly provided in each of the upper housing and the lower housing.
7 . The anti-interference structure for the ultrasonic gas meter according to claim 1 , wherein a side of an outer surface of the upper housing is fixedly provided with a display screen.

Description

CROSS REFERENCE TO THE RELATED APPLICATIONS This application is based upon and claims priority to Chinese Patent Application No. 202311161569.1, filed on Sep. 11, 2023, the entire contents of which are incorporated herein by reference. TECHNICAL FIELD The present disclosure relates to the technical field of gas meters, and in particular to an anti-interference structure for an ultrasonic gas meter. BACKGROUND Ultrasonic gas meter is a new type of gas meter that is different from traditional mechanical gas meter and electronic gas meter. The working principle of the ultrasonic gas meter is as follows: according to a time difference method, the ultrasonic gas meter measures the gas flow velocity based on a difference in the propagation velocities of forward and backward ultrasonic signals in the gas. The time difference method has high accuracy and is widely used due to the fact that the velocity of sound is less affected by the error caused by changes in the fluid temperature. Chinese Patent Application 201920995825.X provides an ultrasonic gas meter. The ultrasonic gas meter includes a gas meter casing. An inner chamber of the gas meter casing is fixedly provided with a gas passing detection tube. A left side of the gas meter casing is fixedly provided with a gas inlet, and a right side of the gas meter casing is fixedly provided with a gas outlet. The gas inlet penetrates a side wall of the gas meter casing and is fixedly connected to a left end of the gas passing detection tube. The ultrasonic gas meter is provided with a duplicate power supply to ensure power supply stability. However, due to the lack of an anti-interference structure, the aforementioned ultrasonic gas meter is subject to interference from medium- and low-frequency signals during use. As a result, the normal operation of ultrasonic waves is affected, thereby affecting the measurement accuracy and making it hard for the ultrasonic gas meter to work properly. In order to solve the problem, the present disclosure proposes an anti-interference structure for an ultrasonic gas meter. SUMMARY A major objective of the present disclosure is to provide an anti-interference structure for an ultrasonic gas meter, to effectively solve the problem that medium- and low-frequency signals interfere with the normal operation of ultrasonic waves, thereby affecting the measurement accuracy and making it hard for the ultrasonic gas meter to work properly. To achieve the above objective, the present disclosure adopts the following technical solution: An anti-interference structure for an ultrasonic gas meter includes an upper housing and a lower housing, where a gas flow channel is fixedly provided in the upper housing; a side of the gas flow channel is fixedly provided with a control box; a side of an outer surface of the gas flow channel is fixedly provided with a shielding layer; and a side of an interior of the gas flow channel is fixedly provided with a signal sensor. Preferably, one side of an interior of the control box is movably provided with a bidirectional threaded rod, and the other side of the interior of the control box is fixedly provided with a sliding rod; two sides of an outer surface of the bidirectional threaded rod are respectively movably connected to two sealing elements, and the two sealing elements are movably connected to the sliding rod; a side of an outer surface of the control box is fixedly provided with a motor; and an output end of the motor is fixedly connected to the bidirectional threaded rod. Preferably, the outer surface of the bidirectional threaded rod is provided with two opposite threaded grooves. Preferably, a side of an interior of the control box is provided with a driving groove; a bearing is fixedly provided in the driving groove; and the bidirectional threaded rod is fixedly connected to the bearing. Preferably, a side of each of the two sealing elements is fixedly provided with a sealing layer; and a side of one sealing element of the two sealing elements is fixedly provided with a connecting element, and a side of the other sealing element is provided with a connecting groove. Preferably, the upper housing includes a fixing plate; a bottom surface of the upper housing is fixedly provided with a fixing element; a top surface of the lower housing is provided with a fixed groove; a side of the fixing plate is movably connected to a plurality of connecting bolts; and two sides of each of the upper housing and the lower housing are respectively provided with a plurality of connecting holes. Preferably, a sound insulation layer is fixedly provided in each of the upper housing and the lower housing. Preferably, a side of an outer surface of the upper housing is fixedly provided with a display screen. Compared with the prior art, the present disclosure has the following beneficial effects: The present disclosure provides an anti-interference structure for an ultrasonic gas meter. The anti-interference structure is prov