CN212482609U

CN212482609U - Antifouling structure of ultrasonic wave gas table

Info

Publication number: CN212482609U
Application number: CN202021553511.3U
Authority: CN
Inventors: 杨光荣
Original assignee: Zhejiang Rongxin Intelligent Instrument Co Ltd
Current assignee: Zhejiang Rongxin Intelligent Instrument Co Ltd
Priority date: 2020-07-30
Filing date: 2020-07-30
Publication date: 2021-02-05
Anticipated expiration: 2030-07-30

Abstract

The utility model discloses an antifouling structure of ultrasonic wave gas table relates to the technical field of ultrasonic wave strapping table, including the runner body and install the scrubbing structure in the runner body, install corresponding first ultrasonic transducer and second ultrasonic transducer on the runner body, the scrubbing structure includes fixed plate and fly leaf, the fixed plate is fixed to be inlayed in the runner body, the fly leaf slides along runner body length direction and installs in the runner body, and fly leaf and runner body inside wall butt, fixed plate and fly leaf set up respectively and are used for the first fluting and the second fluting that the fluid passes through; an elastic rope is connected between the fixed plate and the movable plate. The fluid is utilized to generate acting force on the movable plate to push the movable plate to move away from the fixed plate, so that the movable plate generates scraping force on the flow channel body, and pollutants on the inner side wall of the flow channel body are reduced, and the metering precision and the metering stability of the first ultrasonic transducer and the second ultrasonic transducer are improved.

Description

Antifouling structure of ultrasonic wave gas table

Technical Field

The utility model relates to an ultrasonic wave strapping table's technical field, more specifically says, it relates to an ultrasonic wave gas table's antifouling structure.

Background

With the rapid development of clean and efficient energy sources such as natural gas, the natural gas enters thousands of households, more and more urban residents begin to use the natural gas, the measurement of the natural gas consumption is a necessary step for the use of the natural gas, the currently used household gas meter is basically a diaphragm meter based on a positive displacement principle, the meter is an input mechanical meter, the measurement is carried out by the vibration motion of a diaphragm inside, the measurement precision is limited, the diaphragm can age gradually under the influence of water, oil and dust inside the natural gas, the measurement precision can gradually deteriorate, the diaphragm meter is limited by the principle of the meter, and the miniaturization cannot be carried out.

The prior Chinese utility model with publication number CN204788525U discloses an anti-pollution flow channel structure of an ultrasonic flowmeter. Including measuring runner body and two ultrasonic transducer, it is the cuboid to measure the runner body, two ultrasonic transducer set up simultaneously in measure the preceding side or the rear side on the runner body horizontal direction.

However, in the actual use process of the device, pollutants in the measured fluid (such as solid particles, water and oil gas in the measured gas) can slowly precipitate at the lower part of the measuring flow channel body, and the reflection of ultrasonic signals is influenced, so that the measuring precision and the measuring stability are influenced. Thus, there is room for improvement.

SUMMERY OF THE UTILITY MODEL

To this problem in the practical application, the utility model aims to provide an ultrasonic wave gas table's antifouling structure, concrete scheme is as follows:

an anti-fouling structure of an ultrasonic gas meter comprises a flow channel body and a decontamination structure arranged in the flow channel body, wherein a first ultrasonic transducer and a second ultrasonic transducer which correspond to each other are arranged on the flow channel body;

an elastic rope is connected between the fixed plate and the movable plate, when the elastic rope stores elastic potential energy to the minimum value, the fixed plate and the movable plate are both positioned on one side of the first ultrasonic transducer, which is far away from the second ultrasonic transducer, and when the elastic rope stores elastic potential energy to the maximum value, the movable plate is positioned on one side of the second ultrasonic transducer, which is far away from the first ultrasonic transducer.

Further preferably, a plurality of parallel connecting rods are installed in the second slot, two ends of each connecting rod are respectively abutted to the two opposite inner side walls of the movable plate, the outer side wall of each connecting rod is hinged to a fan blade, and the plurality of fan blades can be sealed in the second slot.

Further preferably, a circular groove is formed in the outer side wall of the movable plate, a ball capable of rolling freely is installed in the circular groove, and the ball is abutted to the inner side wall of the runner body.

Further preferably, the first ultrasonic transducer and the second ultrasonic transducer are mounted on the same side.

Further preferably, one side of the movable plate, which is away from the first ultrasonic transducer, is provided with a scraping blade, and the scraping blade is abutted against the inner side wall of the flow channel body.

Compared with the prior art, the beneficial effects of the utility model are as follows:

the fluid is utilized to generate acting force on the movable plate to push the movable plate to move away from the fixed plate, so that the movable plate generates scraping force on the flow channel body, and pollutants on the inner side wall of the flow channel body are reduced, and the metering precision and the metering stability of the first ultrasonic transducer and the second ultrasonic transducer are improved. The connecting rod and the fan blades are arranged to increase the contact area between the movable plate and the fluid, and the action area of the fluid on the movable plate is relatively increased, so that the transmission force of the fluid on the movable plate is improved.

Drawings

Fig. 1 is an overall schematic diagram of an embodiment of the present invention;

FIG. 2 is a schematic diagram showing the elastic potential energy stored in the bungee cord to a minimum value;

FIG. 3 is a schematic diagram showing the elastic potential energy stored in the bungee cord to a maximum value;

fig. 4 is an overall schematic view showing the movable plate.

Reference numerals: 1. a flow channel body; 2. a first ultrasonic transducer; 3. a second ultrasonic transducer; 4. a decontamination structure; 401. a fixing plate; 4011. a first slot; 402. a movable plate; 4021. a second slot; 5. an elastic cord; 6. a connecting rod; 7. a fan blade; 8. a circular groove; 9. a ball bearing; 10. and (4) scraping the blade.

Detailed Description

The present invention will be described in further detail with reference to the following examples and drawings, but the embodiments of the present invention are not limited thereto.

As shown in fig. 1, an anti-fouling structure of an ultrasonic gas meter includes a square flow channel body 1 and a fouling removing structure 4 installed in the flow channel body 1, wherein a first ultrasonic transducer 2 and a second ultrasonic transducer 3 are installed on the flow channel body 1, the first ultrasonic transducer 2 and the second ultrasonic transducer 3 are installed on the upper side of the flow channel body 1 along the height direction, signal routes of the first ultrasonic transducer 2 and the second ultrasonic transducer 3 are in a V shape with the same angle, and signal routes of the first ultrasonic transducer 2 and the second ultrasonic transducer 3 are overlapped, so that signals between the two are transmitted.

Referring to fig. 2, 3 and 4, the decontamination structure 4 includes a fixed plate 401 and a movable plate 402, the fixed plate 401 is fixedly embedded in the flow channel body 1, the movable plate 402 is slidably mounted in the flow channel body 1 along the length direction of the flow channel body 1, and the fixed plate 401 and the movable plate 402 are respectively provided with a first slot 4011 and a second slot 4021 for passing a fluid. Six parallel connecting rods 6 are installed in the second slot 4021, and two ends of each connecting rod 6 are respectively welded and fixed to two opposite inner side walls of the movable plate 402. Meanwhile, the outer side walls of the six connecting rods 6 are hinged with fan blades 7. When no fluid passes through, the six fan blades 7 seal the second slot 4021, and when fluid passes through, the fluid exerts force on the fan blades 7 to drive the fan blades 7 to rotate along the side departing from the connecting rod 6 from the side departing from the fixing plate 401, so as to open the second slot 4021 and enable the fluid to circulate.

In order to make the movable plate 402 slide more smoothly along the length direction of the flow channel body 1, five circular grooves 8 are respectively and uniformly formed on two opposite outer side walls of the movable plate 402 close to the first ultrasonic transducer 2 and away from the second notch 4021, and balls 9 capable of rolling freely are installed in the five circular grooves 8. When the movable plate 402 is installed on the runner body 1, the balls 9 are abutted against the inner side wall of the runner body, and when the movable plate 402 slides along the length direction of the runner body 1, the balls 9 are used to convert the friction force between the movable plate and the inner side wall of the runner body 1 into rolling friction, so that the movable plate 402 can slide more flexibly relative to the runner body 1.

Further, an elastic cord 5 is connected between the fixed plate 401 and the movable plate 402, one end of the elastic cord 5 abuts against the fixed plate 401, and the other end abuts against the movable plate 402.

When no fluid passes through, the elastic potential energy stored in the elastic rope 5 is at a minimum value, and the fixed plate 401 and the movable plate 402 are both located on the side of the first ultrasonic transducer 2 away from the second ultrasonic transducer 3.

When fluid passes through the flow channel, the fluid acts on the movable plate 402 to push the movable plate 402 to move away from the fixed plate 401, so that the movable plate 402 generates a scraping force on the flow channel body 1, and further pollutants on the inner side wall of the flow channel body 1 are reduced to improve the metering accuracy and the metering stability of the first ultrasonic transducer 2 and the second ultrasonic transducer 3. The connecting rod 6 and the fan blades 7 are arranged to increase the contact area between the movable plate 402 and the fluid, and to relatively increase the acting area of the fluid on the movable plate 402, so as to increase the transmission force of the fluid on the movable plate 402.

In this embodiment, the elastic string 5 can be driven by the minimum fluid flow force to store elastic potential energy to the maximum value, and at this time, the movable plate 402 is located on the side of the second ultrasonic transducer 3 away from the first ultrasonic transducer 2, so as to prevent the movable plate 402 from affecting the signal transmission between the second ultrasonic transducer 3 and the first ultrasonic transducer 2. Preferably, a wiper blade 10 (fig. 4) with an inverted triangle cross section is disposed on a side of the movable plate 402 away from the first ultrasonic transducer 2, the wiper blade 10 abuts against an inner side wall of the flow channel body 1, and the wiper blade 10 improves a wiping force of the movable plate 402 on the flow channel body 1, so as to more effectively perform a decontamination operation on the inner side wall of the flow channel body 1. In addition, the scraping piece 10 is made of plastic materials, so that the mechanical friction between the scraping piece 10 and the runner body 1 is relatively reduced, and the service life of the runner body 1 is prolonged.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. An anti-fouling structure of an ultrasonic gas meter comprises a flow channel body (1) and a decontamination structure (4) installed in the flow channel body (1), wherein the flow channel body (1) is provided with a first ultrasonic transducer (2) and a second ultrasonic transducer (3) which correspond to each other, the anti-fouling structure (4) is characterized by comprising a fixed plate (401) and a movable plate (402), the fixed plate (401) is fixedly embedded in the flow channel body (1), the movable plate (402) is slidably installed in the flow channel body (1) along the length direction of the flow channel body (1), the movable plate (402) is abutted against the inner side wall of the flow channel body (1), and the fixed plate (401) and the movable plate (402) are respectively provided with a first open groove (4011) and a second open groove (4021) for fluid to pass through;

an elastic rope (5) is connected between the fixed plate (401) and the movable plate (402), when elastic potential energy stored by the elastic rope (5) reaches a minimum value, the fixed plate (401) and the movable plate (402) are both positioned on one side of the first ultrasonic transducer (2) departing from the second ultrasonic transducer (3), and when elastic potential energy stored by the elastic rope (5) reaches a maximum value, the movable plate (402) is positioned on one side of the second ultrasonic transducer (3) departing from the first ultrasonic transducer (2).

2. The anti-fouling structure of the ultrasonic gas meter according to claim 1, wherein a plurality of parallel connecting rods (6) are installed in the second slot (4021), two ends of each connecting rod (6) are respectively abutted to two opposite inner side walls of the movable plate (402), fan blades (7) are hinged to outer side walls of the plurality of connecting rods (6), and the plurality of fan blades (7) can seal the second slot (4021).

3. The ultrasonic gas meter antifouling structure according to claim 2, wherein a circular groove (8) is formed in an outer side wall of the movable plate (402), a ball (9) which can freely roll is mounted in the circular groove (8), and the ball (9) is abutted against an inner side wall of the flow channel body (1).

4. The antifouling structure of an ultrasonic gas meter according to claim 3, wherein the first ultrasonic transducer (2) and the second ultrasonic transducer (3) are mounted on the same side.

5. The anti-fouling structure of the ultrasonic gas meter according to claim 4, wherein a wiper blade (10) is disposed on a side of the movable plate (402) away from the first ultrasonic transducer (2), and the wiper blade (10) is abutted against an inner side wall of the flow channel body (1).