CN217845291U

CN217845291U - Airflow buffer device for outlet of flowmeter

Info

Publication number: CN217845291U
Application number: CN202222243834.8U
Authority: CN
Inventors: 梁爽
Original assignee: Tianjin Huamai Gas Equipment Co Ltd
Current assignee: Tianjin Huamai Gas Equipment Co Ltd
Priority date: 2022-08-25
Filing date: 2022-08-25
Publication date: 2022-11-18
Anticipated expiration: 2032-08-25

Abstract

The utility model relates to an air current buffer for flowmeter export, include the entry flange with flowmeter exit linkage, with entry flange welded flowmeter straight tube section, straight tube section end-to-end welding ascending first elbow behind the flowmeter, the end-to-end welding of first elbow has the first seamless pipeline section of vertically, first seamless pipeline section end has welded the second elbow, make the pipeline adjustment horizontal, the seamless pipeline section of second that the end welding level of second elbow set up, the end welding tee bend of second seamless pipeline section, tee bend's horizontal export has the seamless pipeline section of third through taper reducing union coupling, the end welding of the seamless pipeline section of third has the pipe cap, the perpendicular export welding of tee bend has the seamless pipeline section of fourth of vertical setting down, the end welding of the seamless pipeline section of fourth makes the pipeline adjustment horizontal third elbow, the end welding of third elbow has the seamless pipeline section of fifth that the level set up, the end welding of fifth seamless has the outlet flange who is used for being connected with the low reaches valve. The buffer device has the function of buffering air flow and improves the stability of medium flowing.

Description

Airflow buffer device for outlet of flowmeter

Technical Field

The utility model belongs to the technical field of the natural gas measurement statistics, especially, relate to an air current buffer for flowmeter export.

Background

Natural gas is increasingly widely used due to its characteristics of convenient acquisition, convenient transportation, clean combustion and the like. In the application process, the metering of natural gas is very important, the metering is the measurement of the flow rate of the natural gas and is indirectly measured in the flowing process of the natural gas, and the accuracy of the measurement depends on the reasonable design of the whole set of measurement system. The existing measuring instrument adopts a flowmeter, the flowmeter is arranged between an upstream pipeline and a downstream pipeline, accurate measurement is realized, the medium is required to be stable and uniform when flowing through the pipeline, but the medium in the pipeline can be influenced by a plurality of factors in the flowing process, for example, in the operation process of equipment, when the air flow passes through a pressure regulating valve for pressure regulation or a non-full-path valve, the air flow is unstable. Therefore, in order to ensure the accuracy of natural gas metering, it is necessary to establish a scientific and reasonable natural gas metering structure.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming prior art's weak point, providing an air current buffer for flowmeter export that plays the air current cushioning effect, improves the stability that the medium flows.

The above object of the present invention is achieved by the following technical solutions:

a flow buffering device for an outlet of a flow meter, comprising: the pipeline adjusting device comprises an inlet flange connected with an outlet of a flowmeter, a rear straight pipe section welded with the inlet flange and provided with an upward first elbow, the tail end of the rear straight pipe section of the flowmeter is welded with a vertical first seamless pipe section, the tail end of the first seamless pipe section is welded with a second elbow, a pipeline is adjusted to be horizontal, the tail end of the second elbow is welded with a second seamless pipe section horizontally arranged, the tail end of the second seamless pipe section is welded with a three-way joint, the horizontal outlet of the three-way joint is welded with a conical reducing pipe, the tail end of the conical reducing pipe is welded with a third seamless pipe section, the tail end of the third seamless pipe section is welded with a pipe cap used for end sealing, the vertical lower outlet of the three-way joint is welded with a vertically arranged fourth seamless pipe section, the tail end of the fourth seamless pipe section is welded with a pipeline adjusted to be horizontal third elbow, the tail end of the third elbow is welded with a horizontally arranged fifth seamless pipe section, and the tail end of the fifth seamless pipe section is welded with an outlet flange used for being connected with a downstream valve.

Further: the rear straight pipe section of the flowmeter is provided with an opening, a temperature transmitter sheath is vertically welded at the position of the opening, and a temperature transmitter is arranged in the temperature transmitter sheath.

The utility model has the advantages and positive effect:

the airflow buffer device is connected to the rear end of the outlet of the flowmeter, plays a certain buffering role when airflow passes through a curved path, particularly increases the pipe diameter of a third seamless pipe section and is provided with a pipe cap to form a larger airflow buffer area, and plays a better role in buffering airflow, so that medium airflow can be stable and uniform, and the measurement precision of the flowmeter is improved.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Detailed Description

The structure of the present invention will be further explained by embodiments with reference to the accompanying drawings. It is to be understood that this embodiment is illustrative and not restrictive.

An airflow buffering device for an outlet of a flowmeter is disclosed, please refer to fig. 1, and comprises an inlet flange 1 for connecting with an outlet of the flowmeter, a rear straight pipe section 4 of the flowmeter, which is welded with the inlet flange and is horizontally arranged, an upward first elbow 5 is welded at the tail end of the rear straight pipe section of the flowmeter, a vertical first seamless pipe section 6 is welded at the tail end of the first elbow, a second elbow 7 is welded at the tail end of the first seamless pipe section to enable a pipeline to be adjusted to be horizontal, a horizontally arranged second seamless pipe section 8 is welded at the tail end of the second elbow, a three-way joint 9 is welded at the tail end of the second seamless pipe section, a conical reducing pipe 16 is welded at the horizontal outlet of the three-way joint, a third seamless pipe section 14 is welded at the tail end of the conical reducing pipe, a pipe cap 15 is welded at the tail end of the third seamless pipe section to enable end sealing, a vertically arranged fourth seamless pipe section 10 is welded at the vertical lower outlet of the three-way joint, a horizontally arranged fourth seamless pipe section is welded at the tail end to enable a horizontal third elbow 11, a horizontally arranged fifth seamless pipe section 12 is welded at the tail end of the third elbow, a fifth seamless pipe section is welded at the tail end of the outlet of the fifth seamless pipe section, and a downstream flange is used for connecting with the outlet flange.

In the structure, the pipe diameters of the rear straight pipe section, the first seamless pipe section, the second seamless pipe section, the fourth seamless pipe section and the fifth seamless pipe section of the flowmeter are equal, the pipe diameter of the third seamless pipe section is larger than the diameters of the other pipe sections, and an airflow buffer area is formed in the third seamless pipe section.

In the above structure, further: a temperature transmitter sheath 2 is welded on the rear straight pipe section of the flowmeter through an opening, and a temperature transmitter 3 is arranged in the temperature transmitter sheath and used for temperature compensation of the flowmeter. Because the gas is generally settled according to the volume flow under the standard condition, the gas is easily compressed, the density and the volume flow under different pressures and temperatures are greatly different, and the temperature compensation is performed to obtain the flow under the standard condition by performing temperature and pressure compensation on the gas flow under the working condition.

The utility model discloses an in the concrete implementation, straight tube section constitutes behind flowmeter behind straight tube section by entry flange and the flowmeter, and straight tube section should be according to the length preparation that the flowmeter producer required behind the flowmeter, because the flowmeter of every brand and model all has the back straight tube section requirement of oneself, and the bore and the wall thickness of straight tube section need be supporting with the flowmeter behind the bore and the engineering pressure of entry flange, the flowmeter.

The three elbows are all right-angle elbows with large circular arc transition.

The utility model discloses a theory of operation:

the utility model discloses, on the basis of having guaranteed the required back straight tube section length of flowmeter, it is curved to make nearly pi type with its back pipeline, when the air current passes through crooked route, plays certain cushioning effect, and further realizes the buffering in the seamless pipeline section of third, makes the medium air current can steadily at the uniform velocity to can improve measurement accuracy.

Although the embodiments of the present invention and the accompanying drawings are disclosed for illustrative purposes, those skilled in the art will appreciate that: various substitutions, changes and modifications are possible without departing from the spirit of the invention and the scope of the appended claims, and therefore the scope of the invention is not limited to the disclosure of the embodiments and the accompanying drawings.

Claims

1. An airflow damping device for an outlet of a flowmeter, comprising: the pipeline adjusting device comprises an inlet flange connected with an outlet of a flowmeter, a rear straight pipe section welded with the inlet flange and provided with an upward first elbow, the tail end of the rear straight pipe section of the flowmeter is welded with a vertical first seamless pipe section, the tail end of the first seamless pipe section is welded with a second elbow, a pipeline is adjusted to be horizontal, the tail end of the second elbow is welded with a second seamless pipe section horizontally arranged, the tail end of the second seamless pipe section is welded with a three-way joint, the horizontal outlet of the three-way joint is welded with a conical reducing pipe, the tail end of the conical reducing pipe is welded with a third seamless pipe section, the tail end of the third seamless pipe section is welded with a pipe cap used for end sealing, the vertical lower outlet of the three-way joint is welded with a vertically arranged fourth seamless pipe section, the tail end of the fourth seamless pipe section is welded with a pipeline adjusted to be horizontal third elbow, the tail end of the third elbow is welded with a horizontally arranged fifth seamless pipe section, and the tail end of the fifth seamless pipe section is welded with an outlet flange used for being connected with a downstream valve.

2. The flow buffer device for a flow meter outlet of claim 1, wherein: the rear straight pipe section of the flowmeter is provided with an opening, a temperature transmitter sheath is vertically welded at the position of the opening, and a temperature transmitter is arranged in the temperature transmitter sheath.