CN219416285U

CN219416285U - Plug-in special-shaped uniform speed pipe flowmeter

Info

Publication number: CN219416285U
Application number: CN202320123576.1U
Authority: CN
Inventors: 何建平; 何龙; 谈杰; 申路峰; 何江阳
Original assignee: Jiangsu Hongda Instrument Technology Co ltd
Current assignee: Jiangsu Hongda Instrument Technology Co ltd
Priority date: 2023-01-15
Filing date: 2023-01-15
Publication date: 2023-07-25
Anticipated expiration: 2033-01-15

Abstract

The utility model discloses an inserted special-shaped uniform velocity tube flowmeter, which comprises a pipeline, a measuring rod, a connecting flange, a matching flange, a fixing base, a pressure guide tube and an external thread stop valve, wherein the measuring rod horizontally penetrates through an inner wall layer of the pipeline, the end part of the measuring rod is fixed on the fixing base, the fixing base is arranged on the inner wall of the pipeline, the matching flange is fixed on the pipe wall of the pipeline, the connecting flange is fixedly connected with the matching flange, two through holes are formed in the measuring rod, the through holes are parallel to the horizontal central line of the measuring rod, a negative pressure taking hole and a plurality of positive pressure taking holes are formed in the part of the measuring rod, which is positioned in the pipeline, in the inserted special-shaped uniform velocity tube flowmeter, the measuring rod penetrates through the pipeline and is preliminarily fixed through the fixing base, the positive pressure taking signal and the negative pressure taking signal detected by the positive pressure taking hole are acquired by the pressure guide tube through the connecting flange and the matching flange, and the positive pressure taking signal are externally connected with a measuring instrument, so that reliable flow measurement is carried out on the pipeline with a larger inner diameter.

Description

Plug-in special-shaped uniform speed pipe flowmeter

Technical Field

The utility model relates to the technical field of flowmeters, in particular to an inserted special-shaped uniform velocity tube flowmeter.

Background

Most of the existing flowmeters are used for flow measurement in conventional pipelines. However, when the inner diameter of a part of the pipeline is larger, the conventional flowmeter cannot accurately detect, and therefore, the plug-in special-shaped uniform velocity tube flowmeter is designed.

Disclosure of Invention

In order to overcome the defects, the utility model provides the plug-in special-shaped uniform velocity tube flowmeter.

The utility model realizes the above purpose through the following technical scheme:

the utility model provides an inserted special-shaped uniform velocity tube flowmeter, which comprises a pipeline, the measuring stick, flange, mating flange, unable adjustment base, the guide tube and external screw thread stop valve, the measuring stick passes the inner wall layer of pipeline horizontally, the tip of measuring stick is fixed on unable adjustment base, unable adjustment base sets up the inner wall at the pipeline, mating flange is fixed at the pipe wall of pipeline, flange and mating flange fixed connection, two through-holes have been seted up on the measuring stick, the through-hole is parallel with the horizontal central line of measuring stick, the part of measuring stick in the pipeline is equipped with negative pressure taking hole and a plurality of positive pressure taking holes, each positive pressure taking hole communicates with the through-hole that is located the below and positive pressure taking hole is vertical downward, negative pressure taking hole communicates with the through-hole that is located the top and negative pressure taking hole is vertical upwards, the center department of pipeline is followed to each positive pressure taking hole evenly distributed along the central line of pipeline;

the impulse pipe is located the pipeline outside, and impulse pipe's quantity is two, and two impulse pipes communicate with two switch-on through-holes respectively, and the external screw thread stop valve sets up on impulse pipe.

Preferably, through coupling mechanism fixed connection between flange and the pair flange, coupling mechanism includes hex bolts, nut, spring washer and flat pad, and hex bolts passes flange and pair flange and nut threaded connection respectively, and spring washer is located between nut and the pair flange, and flat pad is located between hex bolts and the flange, and coupling mechanism has six pairs in total, and hex bolts passes flange and pair flange and nut threaded connection respectively, can realize anti-drop between hex bolts and the nut through spring washer and flat pad simultaneously, has improved the reliability of connection fixation.

Preferably, the apertures of the negative pressure taking hole and the positive pressure taking hole are 8mm, and the aperture of the through hole is 12mm.

Preferably, plugs are arranged at the two ends of the through hole, so that the two ends of the through hole are sealed, and the measuring accuracy is improved.

Preferably, the length of the connection part of the pressure guide tube and the through hole is 40mm from the end part of the measuring rod.

Preferably, a sealing gasket is arranged between the connecting flange and the mating flange.

Preferably, the section of the measuring rod is diamond.

The beneficial effects of the utility model are as follows: in this inserted special-shaped uniform velocity tube flowmeter, the measuring stick passes the pipeline, carries out preliminary fixation through unable adjustment base, and then fixes once more through flange and pairing flange, cooperates the impulse pipe to gather positive pressure taking signal and the negative pressure taking signal that positive pressure taking hole and negative pressure taking hole detected respectively, external measuring instrument to the realization carries out reliable flow measurement to the pipeline of great internal diameter.

Drawings

The utility model will now be described by way of example and with reference to the accompanying drawings in which:

FIG. 1 is a schematic diagram of the structure of the present utility model;

fig. 2 is a view in the a direction of fig. 1.

In the figure: 1. the device comprises a plug, a connecting flange, a sealing gasket, a mating flange, a hexagon bolt, a nut, a spring washer, a flat gasket, a pipeline, a measuring rod, a fixed base, an external thread stop valve, a pressure guide pipe, a negative pressure taking hole and a positive pressure taking hole.

Detailed Description

The utility model will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic representations which merely illustrate the basic structure of the utility model and therefore show only the structures which are relevant to the utility model.

As shown in fig. 1 and 2, an inserted special-shaped uniform speed tube flowmeter comprises a pipeline 9, a measuring rod 10, a connecting flange 2, a mating flange 4, a fixed base 11, a pressure guiding tube 13 and an external thread stop valve 12, wherein the measuring rod 10 horizontally penetrates through the inner wall layer of the pipeline 9, the end part of the measuring rod 10 is fixed on the fixed base 11, the fixed base 11 is arranged on the inner wall of the pipeline 9, the mating flange 4 is fixed on the wall of the pipeline 9, the connecting flange 2 is fixedly connected with the mating flange 4, two through holes are formed in the measuring rod 10, the through holes are parallel to the horizontal center line of the measuring rod 10, the part of the measuring rod 10, which is positioned in the pipeline 9, is provided with a negative pressure taking hole 14 and a plurality of positive pressure taking holes 15, each positive pressure taking hole 15 is communicated with the through hole positioned below and the positive pressure taking hole 15 is vertically downward, the negative pressure taking hole 14 is communicated with the through hole positioned above the through hole and the negative pressure taking hole 14 is vertically upward, the negative pressure taking hole 14 is positioned at the center of the pipeline 9, and each positive pressure taking hole 15 is uniformly distributed along the center line of the pipeline 9;

the impulse pipes 13 are arranged outside the pipeline 9, the number of the impulse pipes 13 is two, the two impulse pipes 13 are respectively communicated with the two conducting through holes, and the external thread stop valve 12 is arranged on the impulse pipes 13.

The working principle of the plug-in special-shaped uniform speed tube flowmeter is that a measuring rod 10 passes through a pairing flange 4 on a pipeline 9 by a worker, passes through a cement layer of the pipeline 9, reaches a fixing base 11 on the inner wall of the pipeline 9, achieves preliminary fixing of the measuring rod 10, is fixed by a connecting flange 2 and the cooperation flange, achieves reliable fixing of the measuring rod 10, and further meets the requirement of follow-up accurate measurement.

The gas in the pipeline 9 flows from bottom to top, positive signal detection is carried out on each positive pressure taking hole 15 positioned below, negative signal detection is carried out on each negative pressure taking hole 14 positioned above, then positive and negative signal acquisition is carried out on the gas by the pressure guiding pipe 13, and accurate detection is carried out on the flow in the pipeline 9 by an external instrument.

Specifically, through coupling mechanism fixed connection between flange 2 and the pair of flange 4, coupling mechanism includes hexagonal bolt 5, nut 6, spring washer 7 and flat pad 8, hexagonal bolt 5 passes flange 2 and pair flange 4 and nut 6 threaded connection respectively, spring washer 7 is located between nut 6 and the pair flange 4, flat pad 8 is located between hexagonal bolt 5 and flange 2, coupling mechanism has six pairs altogether, hexagonal bolt 5 passes flange 2 and pair flange 4 and nut 6 threaded connection respectively, simultaneously can realize anti-drop between hexagonal bolt 5 and the nut 6 through spring washer 7 and flat pad 8, the reliability of connection fixed has been improved.

Specifically, the apertures of the negative pressure taking hole 14 and the positive pressure taking hole 15 are 8mm, and the aperture of the through hole is 12mm; and plugs 1 are arranged at the two ends of the through hole, so that the two ends of the through hole are sealed, and the measuring accuracy is improved. The length of the joint of the pressure guide tube 13 and the conducting through hole is 40mm from the end part of the measuring rod 10; a sealing gasket 3 is arranged between the connecting flange 2 and the mating flange 4; the section of the measuring rod 10 is diamond-shaped.

The present utility model has been made in view of the above-described circumstances, and it is an object of the present utility model to provide a portable electronic device capable of performing various changes and modifications without departing from the scope of the technical spirit of the present utility model. The technical scope of the present utility model is not limited to the description, but must be determined according to the scope of claims.

Claims

1. An inserted special-shaped uniform velocity tube flowmeter, which is characterized in that: the device comprises a pipeline, a measuring rod, a connecting flange, a mating flange, a fixed base, a pressure guiding pipe and an external thread stop valve, wherein the measuring rod horizontally penetrates through an inner wall layer of the pipeline, the end part of the measuring rod is fixed on the fixed base, the fixed base is arranged on the inner wall of the pipeline, the mating flange is fixed on the pipe wall of the pipeline, the connecting flange is fixedly connected with the mating flange, two through holes are formed in the measuring rod and are parallel to the horizontal central line of the measuring rod, a negative pressure taking hole and a plurality of positive pressure taking holes are formed in the part of the measuring rod, which is positioned in the pipeline, each positive pressure taking hole is communicated with the through hole positioned below and vertically downward, each negative pressure taking hole is communicated with the through hole positioned above and vertically upward, and the negative pressure taking holes are uniformly distributed along the central line of the pipeline;

2. The plug-in profiled uniform velocity tube flowmeter of claim 1, wherein: the connecting flange is fixedly connected with the mating flange through a connecting mechanism, the connecting mechanism comprises a hexagon bolt, a nut, a spring washer and a flat pad, the hexagon bolt penetrates through the connecting flange and the mating flange respectively to be in threaded connection with the nut, the spring washer is located between the nut and the mating flange, and the flat pad is located between the hexagon bolt and the connecting flange.

3. The plug-in profiled uniform velocity tube flowmeter of claim 1, wherein: the aperture of the negative pressure taking hole and the aperture of the positive pressure taking hole are 8mm, and the aperture of the through hole is 12mm.

4. The plug-in profiled uniform velocity tube flowmeter of claim 1, wherein: and plugs are arranged at two ends of the conducting through holes.

5. The plug-in profiled uniform velocity tube flowmeter of claim 1, wherein: the length of the junction of the impulse tube and the conducting through hole is 40mm from the end part of the measuring rod.

6. The plug-in profiled uniform velocity tube flowmeter of claim 1, wherein: and a sealing gasket is arranged between the connecting flange and the mating flange.

7. The plug-in profiled uniform velocity tube flowmeter of claim 1, wherein: the section of the measuring rod is diamond-shaped.