CN212513185U

CN212513185U - Flow meter

Info

Publication number: CN212513185U
Application number: CN202021443753.7U
Authority: CN
Inventors: 孙波; 廖泽均; 钟平; 杜勇; 汪平; 杨帅
Original assignee: Chongqing Zhongpei Garden Engineering Co ltd
Current assignee: Chongqing Zhongpei Garden Engineering Co ltd
Priority date: 2020-07-21
Filing date: 2020-07-21
Publication date: 2021-02-09
Anticipated expiration: 2030-07-21

Abstract

The utility model discloses a flowmeter, including survey buret and the monitoring pipe of connection on the pipeline to be measured, survey buret 1 includes first hole enlargement section, reducing diameter section and the second hole enlargement section that connects gradually, be provided with the survey entry on the pipe wall that is provided with survey export, reducing diameter section on the pipe wall of first hole enlargement section, the entry and the survey export of survey buret communicate, the export of survey buret passes the survey entry and is located the monitoring pipe, be provided with electromagnetic flow monitoring devices on the survey buret; the measuring outlet is provided with a filter screen, and the measuring pipe is provided with a reverse flushing pipe. When containing impurity in the liquid in the pipeline, for example use in the sewage treatment field, through long-time work back impurity probably get into survey buret, because the pipe diameter of surveying buret under the prevailing circumstances can be far less than the pipe diameter of monitoring pipe, so survey buret and block up more easily, for reducing the impurity that gets into in surveying the buret, set up the filter screen for the impurity of great granule is held back intraductal at the monitoring.

Description

Flow meter

Technical Field

The utility model relates to a flow monitoring technology field, concretely relates to flowmeter.

Background

The flowmeter is related to the industrial field, under the general condition, technical personnel in the field are to directly install the flowmeter on the pipeline to be measured, the flow of gas or liquid on the pipeline to be measured is measured, however, when the flowmeter breaks down, the flowmeter needs to be maintained or replaced, the maintenance or replacement of the flowmeter at the moment can possibly influence the normal work of the pipeline to be measured, so the flowmeter is convenient to replace or the replacement and the maintenance of the flowmeter are convenient, and the flowmeter which cannot influence the pipeline to be measured in the replacement and the maintenance of the flowmeter has important significance.

The branch pipe is arranged on the pipeline to be determined, the flow on the pipeline to be determined is determined by determining the flow on the branch pipe, but the branch pipe is easy to block if particle impurities exist in liquid because the pipe diameter of the branch pipe is thin.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a flowmeter solves the easy problem of blockking up of branch pipe.

In order to solve the technical problem, the utility model adopts the following technical scheme:

a flow meter comprises a measuring tube and a monitoring tube connected to a pipeline to be measured, wherein the monitoring tube 1 comprises a first diameter-expanding section, a diameter-reducing section and a second diameter-expanding section which are sequentially connected, a measuring outlet is formed in the tube wall of the first diameter-expanding section, a measuring inlet is formed in the tube wall of the diameter-reducing section, the inlet of the measuring tube is communicated with the measuring outlet, the outlet of the measuring tube penetrates through the measuring inlet and is located in the monitoring tube, and an electromagnetic flow monitoring device is arranged on the measuring tube;

the measuring outlet is provided with a filter screen, and the measuring pipe is provided with a reverse flushing pipe.

Preferably, be provided with filter screen cleaning device in the monitoring pipe, filter screen cleaning device includes the fixed axle with monitoring pipe coaxial setting and sets up the scraper blade on the fixed axle through the bearing, just the scraper blade is provided with the contained angle with the intraductal liquid flow direction of monitoring.

Preferably, the fixed shaft is fixed in the monitoring pipe through connecting rods, and the number of the connecting rods is more than two and is uniformly distributed around the fixed shaft.

Preferably, the tail end of the scraper blade is provided with bristles for cleaning the filter screen.

Preferably, the tail end of the scraper is provided with a rotating shaft, the rotating shaft is provided with a rotating rod capable of rotating around the rotating shaft, and the bristles are fixed on the rotating rod.

Preferably, a reinforcing plate is arranged between the outer walls of the reducing section and the outer walls of the first expanding section and the second expanding section 13, and the axis and at least one diameter of the reducing section are positioned on the reinforcing plate.

Preferably, the number of the reinforcing plates is more than two, and a supporting plate is arranged between every two adjacent reinforcing plates and is perpendicular to the reinforcing plates.

Compared with the prior art, the beneficial effects of the utility model are one of following at least:

when rotor flow detection device in this embodiment broke down, can close the valve on the survey buret, pull down rotor flow detection device and overhaul or change, can not influence the work of monitoring pipe.

When containing impurity in the liquid in the pipeline, for example use in the sewage treatment field, through long-time work back impurity probably get into survey buret, because the pipe diameter of surveying buret under the prevailing circumstances can be far less than the pipe diameter of monitoring pipe, so survey buret and block up more easily, for reducing the impurity that gets into in surveying the buret, set up the filter screen for the impurity of great granule is held back intraductal at the monitoring.

In order to dredge the filter screen, the measuring pipe is provided with the reverse flushing pipe, when the filter screen needs to be dredged, liquid in the reverse flushing pipe is only needed to be pressed into the measuring pipe, and then the liquid enters the monitoring pipe through the filter screen, so that the dredging is convenient.

Because the diameter of the reducing section is smaller than the diameters of the first expanding section and the second expanding section, the strength of the reducing section is poor, and the reducing section can be easily deformed under the action of external force, a reinforcing plate is arranged, two ends of the reinforcing plate are respectively fixed on the first expanding section and the second expanding section, and one side edge of the reinforcing plate is fixed on the side wall of the reducing section, so that the reducing section is reinforced.

Drawings

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

Fig. 2 is a schematic view of the installation of the scraper blade of the present invention.

Fig. 3 is a schematic structural view of the middle rotating stick of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The embodiment provides a flow meter, as shown in fig. 1, including a measuring tube 2 and a monitoring tube 1 connected to a pipeline to be measured, where the monitoring tube 1 includes a first diameter-expanding section 11, a diameter-reducing section 12 and a second diameter-expanding section 13 connected in sequence, a measuring outlet is provided on a tube wall of the first diameter-expanding section 11, a measuring inlet is provided on a tube wall of the diameter-reducing section 12, an inlet of the measuring tube 2 is communicated with the measuring outlet, an outlet of the measuring tube 2 passes through the measuring inlet and is located in the monitoring tube 1, and an electromagnetic flow monitoring device 3 is provided on the measuring tube 2;

a filter screen is arranged at the position of the measuring outlet, and a reverse flushing pipe 5 is arranged on the measuring pipe 2.

The flowmeter in this embodiment is including installing monitoring pipe 1 on the pipeline that awaits measuring, and any connected mode that exists among the prior art such as threaded connection, flange joint can be adopted between monitoring pipe 1 and the pipeline that awaits measuring, as long as can make monitoring pipe 1 and the pipeline intercommunication that awaits measuring can. Since the diameters of the first diameter-enlarging section 11 and the second diameter-enlarging section 13 are larger than the diameter of the diameter-reducing section 12, the inlet of the measuring tube 2 is directly connected with the first diameter-enlarging section 11, and the outlet of the measuring tube 2 is connected with the diameter-reducing section 12, so that the liquid flowing speed at the inlet of the measuring tube 2 is lower than that at the outlet of the measuring tube 2, the pressure at the outlet of the measuring tube 2 is lower than that at the inlet of the measuring tube, and part of the liquid enters the measuring tube 2.

Survey and be provided with rotor flow detection device on buret 2, can survey the flow of surveying the interior material of buret 2, because survey and to present certain functional relation between the flow in buret 2 and the monitoring pipe 1, can calculate the flow through monitoring pipe 1 through the reading on the rotor flow detection device, can obtain the flow through the pipeline that awaits measuring promptly.

When rotor flow detection device in this embodiment broke down, can close the valve on surveying buret 2, pull down rotor flow detection device and overhaul or change, can not influence the work of monitoring pipe 1. Survey the exit and be provided with the filter screen, when containing impurity in the liquid in the pipeline, for example use in the sewage treatment field, through long-time work back impurity probably get into survey buret 2, because survey buret 2's pipe diameter under the prevailing circumstances can be far less than the pipe diameter of monitoring pipe 1, so survey buret 2 and block up more easily, for the impurity that reduces to get into in surveying buret 2, set up the filter screen for the impurity of great granule is held back in monitoring pipe 1.

When the filter screen has a lot of impurities accumulated, the flow in the measuring pipe 2 is reduced, and a back washing pipe 5 is arranged on the measuring pipe 2 for dredging the filter screen. In order to facilitate the replacement of the flow meter rotor flow monitoring device, the measuring pipe 2 is provided with valves at two ends of the flow meter rotor flow monitoring device, the back flushing pipe 5 is arranged on the measuring pipe 2 between the valve at the liquid inlet end of the flow measuring device and the filter screen, when the filter screen needs to be dredged, liquid in the back flushing pipe 5 is only needed to be pressed into the measuring pipe 2, and then the liquid enters the monitoring pipe 1 through the filter screen, so that the dredging is convenient.

In this embodiment, the connection between the first diameter-expanding section 11 and the diameter-reducing section 12 and the connection between the diameter-reducing section 12 and the second diameter-expanding section 13 are preferably provided with transition sections, so that the pipe diameter of the monitoring pipe 1 is gradually reduced and then gradually increased, which is beneficial to maintaining the stability of the liquid in the monitoring pipe 1.

Further, a filter screen cleaning device is arranged in the monitoring pipe 1 in this embodiment, the filter screen cleaning device includes a fixing shaft coaxially arranged with the monitoring pipe 1 and a scraper 6 arranged on the fixing shaft through a bearing, and an included angle is formed between the scraper 6 and the flowing direction of the liquid in the monitoring pipe 1, as shown in fig. 2.

Although the filter screen of 5 back flush pipes mediation that can convenient and fast, but can influence flowmeter rotor flow monitoring devices's work during the mediation, so set up filter screen cleaning device, the deposit of minimize particulate matter on the filter screen reduces the probability that the filter screen blockked up.

In this embodiment, a scraper 6 is arranged in the monitoring pipe 1 where the filter screen is located, one end of the scraper 6 is connected to the fixed shaft through a bearing, so that the scraper 6 can rotate around the fixed shaft, and the other end of the scraper is in surface contact with the filter screen, so that particles deposited on the filter screen can be scraped. Wherein the scraper blade 6 is provided with the contained angle with liquid flow direction, is equivalent to a stirring vane for when liquid flows forward, can give 6 thrust of scraper blade, make scraper blade 6 rotate around the fixed axle, spontaneous cleans the filter screen.

Further, the fixed shaft in this embodiment is fixed in the monitoring tube 1 through a connecting rod 7, and more than two connecting rods 7 are uniformly distributed around the fixed shaft.

The fixed pipe in this application passes through connecting rod 7 to be fixed in monitoring pipe 1, simple structure, and stability is good.

Furthermore, the end of the scraper 6 in this embodiment is provided with bristles 61 for cleaning the filter screen, so that the cleaning effect is better than that of directly cleaning the filter screen by using the scraper 6.

Further, the end of the scraper 6 in this embodiment is provided with a rotating shaft, the rotating shaft is provided with a rotating rod 62 capable of rotating around the rotating shaft, and the bristles 61 are fixed on the rotating rod 62, as shown in fig. 3. The bristles 61 are arranged around the rotating rod 62, and the rotating rod 62 is preferably angled with respect to the rotating direction of the scraper 6, so that the cleaning effect is better than that of the bristles arranged on the surface of the sphere directly.

Furthermore, a reinforcing plate 4 is arranged between the outer walls of the reducing section 12 and the first expanding section 11 and the second expanding section 13 in the embodiment, and the axis and at least one diameter of the reducing section are positioned on the reinforcing plate 4.

Because the diameter of the reducing section 12 is smaller than the diameters of the first expanding section 11 and the second expanding section 13, the strength of the reducing section 12 is poor, and the reducing section may be easily deformed under the action of external force, the reinforcing plate 4 is arranged, two ends of the reinforcing plate 4 are respectively fixed on the first expanding section 11 and the second expanding section 13, and one side edge of the reinforcing plate is fixed on the side wall of the reducing section 12, so that the reducing section 12 is reinforced.

Furthermore, there are more than two reinforcing plates 4 in this embodiment, a supporting plate 8 is disposed between two adjacent reinforcing plates 4, and the supporting plate 8 is perpendicular to the reinforcing plates 4.

The supporting plate 8 can play a role in supporting the reinforcing plate 4, and the reinforcing effect of the reinforcing plate 4 is improved.

Although the invention has been described herein with reference to a number of illustrative embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the spirit and scope of the principles of this invention. More specifically, various variations and modifications are possible in the component parts and/or arrangements of the subject combination arrangement within the scope of the disclosure, the drawings and the appended claims. In addition to variations and modifications in the component parts and/or arrangements, other uses will also be apparent to those skilled in the art.

Claims

1. A flow meter, characterized by: the electromagnetic flow monitoring device comprises a measuring pipe (2) and a monitoring pipe (1) connected to a pipeline to be detected, wherein the monitoring pipe (1) comprises a first diameter expanding section (11), a diameter reducing section (12) and a second diameter expanding section (13) which are sequentially connected, a measuring outlet is formed in the pipe wall of the first diameter expanding section (11), a measuring inlet is formed in the pipe wall of the diameter reducing section (12), the inlet of the measuring pipe (2) is communicated with the measuring outlet, the outlet of the measuring pipe (2) penetrates through the measuring inlet to be located in the monitoring pipe (1), and an electromagnetic flow monitoring device (3) is arranged on the measuring pipe (2);

a filter screen is arranged at the position of the measuring outlet, and a reverse flushing pipe (5) is arranged on the measuring pipe (2).

2. The flowmeter of claim 1, characterized in that a filter screen cleaning device is arranged in the monitoring pipe (1), the filter screen cleaning device comprises a fixed shaft coaxially arranged with the monitoring pipe (1) and a scraper (6) arranged on the fixed shaft through a bearing, and the scraper (6) is arranged at an included angle with the flowing direction of the liquid in the monitoring pipe (1).

3. The flowmeter of claim 2, characterized in that said fixed shaft is fixed inside the monitoring tube (1) by means of connecting rods (7), said connecting rods (7) being more than two and evenly distributed around the fixed shaft.

4. A meter according to claim 3, characterized in that the scraper (6) is provided at its distal end with bristles (61) for cleaning the filter net.

5. The flowmeter of claim 4, wherein the scraper (6) is provided at its distal end with a rotating shaft, the rotating shaft being provided with a rotating rod (62) capable of rotating around the rotating shaft, the bristles (61) being fixed to the rotating rod (62).

6. The flowmeter of claim 1, characterized in that a reinforcing plate (4) is arranged between the outer walls of the reducing section (12) and the first and second expanding sections (11, 13), the axis and at least one diameter of the reducing section being located on the reinforcing plate (4).

7. The flowmeter of claim 6, wherein there are more than two stiffening plates (4), and a support plate (8) is arranged between two adjacent stiffening plates (4), the support plate (8) being perpendicular to the stiffening plates (4).