CN111878711A

CN111878711A - Pipeline blockage checking device and detection method thereof

Info

Publication number: CN111878711A
Application number: CN202010646015.0A
Authority: CN
Inventors: 张小会; 黄宏敏; 孙超
Original assignee: Datang Gongyi Power Generation Co ltd
Current assignee: Datang Gongyi Power Generation Co ltd
Priority date: 2020-07-07
Filing date: 2020-07-07
Publication date: 2020-11-03

Abstract

The invention provides a pipeline blockage checking device which comprises a checking pipe, a pre-checking pipe and a pressure regulating pipe, wherein the pre-checking pipe and the pressure regulating pipe are arranged on a through-flow outlet door of the checking pipe, a valve a and a flowmeter are arranged on the checking pipe, two ends of the pressure regulating pipe are respectively arranged on the checking pipe, the flowmeter is positioned between two ports of the pressure regulating pipe, and a valve b and a valve c are respectively arranged on the pressure regulating valve and the pre-checking pipe.

Description

Pipeline blockage checking device and detection method thereof

Technical Field

The invention relates to the technical field of industrial detection equipment, in particular to a pipeline blockage checking device and a detection method thereof.

Background

With the increasingly severe environmental protection situation of the country, most modern industrial production is gradually moving towards cleaning, but in the production and manufacturing process, dust and corrosive substances in special pipelines of the system are easy to block the pipelines. Prevent that the pipeline from blockking up and can accurately know medium pressure, flow in the pipeline, must pursue in the industrial production, common easy stifled pipeline such as CMS flue gas sampling pipeline, coal pulverizer material level differential pressure sampling pipeline, ammonia injection flowmeter pipeline, steel mill coal fired boiler furnace negative pressure, boiler tube leak hunting etc. among the thermal power factory.

The industrial equipment generally runs uninterruptedly for a long period, the sampling pipeline which is easy to block is required to be checked during equipment maintenance, the high accuracy performance of block checking is required, and the blocked pipeline can be conveniently found and dredged in time.

Disclosure of Invention

The invention aims to provide a pipeline blockage checking device, which solves the problem of low blockage checking accuracy.

The invention is realized by the following technical scheme:

the utility model provides a stifled device is looked into to pipeline, is managed including the inspection, sets up check-up in advance on the through-flow outlet door of check-up pipe and pressure regulating pipe, the check-up pipe has set gradually valve a and flowmeter along the fluid direction of motion, the both ends of pressure regulating pipe set up respectively on the check-up pipe, the flowmeter is located between the pressure regulating pipe both ends mouth, the air-vent valve with check in advance and be provided with valve b and valve c on managing respectively.

Further, a filter is arranged on the verification pipe and is positioned in front of the input end of the flowmeter.

Preventing impurities in the fluid from interfering with the accuracy of the flowmeter.

Further, a level gauge is arranged on the checking pipe.

The standard operation of the detection personnel is convenient.

Further, a handle is arranged on the pressure regulating pipe.

Further, the blockage checking method of the pipeline blockage checking device comprises the following steps:

s1, selecting a pre-checking pipe with the same specification as that of a to-be-checked pipeline, and installing the pre-checking pipe on a through-flow outlet door of the checking pipe;

s2, connecting the fluid into the check pipe from the flow inlet door, fully opening the valve a and the valve c, closing the valve b, observing a pointer of the flowmeter, and if the flow of the fluid exceeds a preset threshold value of the flowmeter, opening the valve c to adjust the flow of the fluid flowing through the flowmeter so that the flow is controlled below the preset threshold value of the flowmeter;

s3, adjusting the opening and closing size of the valve c, and recording the numerical value on the flowmeter;

s4, closing the valve a, replacing the pre-checking pipe with a metal hose, and connecting the inspection pipe with the to-be-detected blocked pipeline through the metal hose;

s5, the valve a is fully opened to introduce fluid, the numerical value on the flowmeter is observed, and the opening and closing size of the corresponding valve c recorded in S3 is compared, so that the blockage condition of the pipeline to be detected is known.

Further, the preset threshold in S2 is 2/3 of the meter range.

Further, the opening degree of the opening and closing size of the regulating valve c in S3 is 100%, 75%, 50%, 25% and 0% in this order, and S3 needs to be repeated three times or more.

Further, the metal pipe in S4 is a metal hose with a variable diameter.

Compared with the prior art, the invention has the following advantages and beneficial effects:

1. the invention relates to a pipeline blockage checking device, which expands the measuring range of a flowmeter by adjusting a valve b and enables the flowmeter to work in the optimal measuring range;

2. according to the pipeline blockage checking device, before blockage checking, the valve c on the pipeline can be pre-checked through the adjusting joint, flow data of the checked pipeline under different blockage degrees are quantized, and the blockage degrees of the checked pipeline are compared and judged.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic view of the structure of the present invention.

FIG. 2 is a schematic diagram of a calibration tube according to the present invention.

Fig. 3 is a schematic view of the pressure regulating tube of the present invention.

FIG. 4 is a schematic diagram of a pre-calibration tube structure according to the present invention.

FIG. 5 is a schematic view b of the present invention.

Reference numbers and corresponding part names in the drawings:

1-inspection pipe, 2-pressure regulating pipe, 3-metal hose, 4-pre-inspection pipe, 11-through flow inlet valve, 12-valve a, 13-filter, 14-flowmeter, 15-level meter, 16-through flow outlet valve, 21-valve b, 22-handle, 41-valve c.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.

The invention will be further described with reference to the accompanying drawings, but the scope of the invention is not limited to the following.

Example 1

As shown in fig. 1 to 5, the pipe blockage checking device of the present invention includes a checking pipe 1, a pre-checking pipe 4 and a pressure regulating pipe 2, which are arranged on a through-flow outlet door 16 of the checking pipe 1, wherein the checking pipe 1 is sequentially provided with a valve a12 and a flowmeter 14 along a fluid movement direction, two ends of the pressure regulating pipe 2 are respectively arranged on the checking pipe 1, the flowmeter 14 is located between two ports of the pressure regulating pipe 2, and the pressure regulating valve 2 and the pre-checking pipe 4 are respectively provided with a valve b21 and a valve c 41.

A filter 13 is arranged on the calibration tube 1 and the filter 13 is located before the input end of the flowmeter 4.

Preventing impurities in the fluid from interfering with the accuracy of flow meter 14.

The calibration pipe 1 is provided with a level gauge 15.

The standard operation of the detection personnel is convenient.

The pressure regulating pipe 2 is provided with a handle 22.

Example 2

Based on the embodiment 1, the blockage checking method of the pipeline blockage checking device comprises the following steps:

s1, selecting a pre-checking pipe 4 with the same specification as that of a to-be-checked pipeline, and installing the pre-checking pipe 4 on a through-flow outlet door 16 of the checking pipe 1;

s2, connecting the fluid into the check pipe 1 from the flow inlet door 11, fully opening the valve a12 and the valve c41, closing the valve b21, observing a pointer of the flowmeter 14, and if the flow of the fluid exceeds a preset threshold value of the flowmeter 14, opening the valve c21 to adjust the flow passing through the flowmeter 14 so that the flow is controlled to be below the preset threshold value of the flowmeter 14;

s3, adjusting the opening and closing size of the valve c41, and recording the numerical value on the flowmeter 14;

s4, closing a valve a12, replacing the pre-checking pipe 4 with a metal hose 3, and connecting the checking pipe 1 with the to-be-blocked pipeline through the metal hose 3;

s5, the fully-opened valve a12 is filled with fluid, the numerical value on the flowmeter 14 is observed, and the opening and closing size of the corresponding valve c41 recorded in S3 is compared, so that the blockage condition of the to-be-detected blocked pipeline is known.

The preset threshold at S2 is 2/3 of the range of the flow meter 14.

The opening degree of the opening and closing size of the regulating valve c in the S3 is 100%, 75%, 50%, 25% and 0% in sequence, and the S3 needs to be repeatedly operated more than three times.

The metal pipe 3 in S4 is a metal hose with a variable diameter.

The invention relates to a pipeline blockage checking device, which expands the range of a flowmeter 14 by adjusting a valve b21, enables the flowmeter 14 to work in the optimal range, quantifies flow data of a checked pipeline under different blockage degrees by adjusting a valve c41 on a pre-check pipe 4 before blockage checking, and compares and judges the blockage degree of the checked pipeline.

Example 3

s2, connecting the fluid into the check pipe 1 from the flow inlet door 11, fully opening the valve a12 and the valve c41, closing the valve b21, observing a pointer of the flowmeter 14, and if the flow of the fluid exceeds a preset threshold value of the flowmeter 14, opening the valve a12 to adjust the flow passing through the flowmeter 14 so that the flow is controlled to be below the preset threshold value of the flowmeter 14;

Further, the preset threshold in S2 is 2/3 of the range of the flowmeter 14.

Further, the metal pipe 3 in S4 is a metal hose with a variable diameter.

The invention relates to a pipeline blockage checking device, which expands the range of a flowmeter 14 by adjusting a valve a12, enables the flowmeter 14 to work in the optimal range, quantifies flow data of a checked pipeline under different blockage degrees by adjusting a valve c41 on a pre-check pipe 4 before blockage checking, and compares and judges the blockage degree of the checked pipeline.

The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. A pipeline blockage checking device is characterized in that: including inspection pipe (1), set up check-up pipe (4) and pressure regulating pipe (2) in advance on through-flow outlet door (16) of check-up pipe (1), check-up pipe (1) has set gradually valve a (12) and flowmeter (14) along fluid direction of motion, the both ends of pressure regulating pipe (2) set up respectively on check-up pipe (1), flowmeter (14) are located between pressure regulating pipe (2) both ends mouth, be provided with valve b (21) and valve c (41) on air-vent valve (2) and check-up pipe (4) in advance respectively.

2. A pipeline blockage detection device according to claim 1, wherein a filter (13) is arranged on the verification pipe (1) and the filter (13) is positioned in front of the input end of the flowmeter (4).

3. The pipeline blockage checking device according to claim 1, wherein a level (15) is arranged on the checking pipe (1).

4. A pipeline plugging device according to claim 1, wherein a handle (22) is arranged on said pressure regulating pipe (2).

5. The method for pipeline blockage inspection according to any one of claims 1 to 4, wherein the method comprises the following steps:

s1, selecting a pre-checking pipe (4) with the same specification as that of a to-be-checked pipeline, and installing the pre-checking pipe (4) on a through-flow outlet door (16) of the checking pipe (1);

s2, fluid is connected into the check pipe (1) from the flow inlet door (11), the valve a (12) and the valve c (41) are fully opened, the valve b (21) is closed, a pointer of the flow meter (14) is observed, if the flow rate of the fluid exceeds a preset threshold value of the flow meter (14), the valve c (21) is opened to adjust the flow rate of the fluid flowing through the flow meter (14), and the flow rate is controlled to be below the preset threshold value of the flow meter (14);

s3, adjusting the opening and closing size of the valve c (41), and recording the numerical value on the flowmeter (14);

s4, closing a valve a (12), replacing the pre-checking pipe (4) with a metal hose (3), and connecting the inspection pipe (1) with the to-be-detected blocked pipeline through the metal hose (3);

s5, the fully-opened valve a (12) is filled with fluid, the numerical value on the flowmeter (14) is observed, and the opening and closing size of the corresponding valve c (41) recorded in S3 is compared, so that the blockage condition of the to-be-blocked pipeline is known.

6. The method for detecting the blockage of the pipeline, according to claim 5, wherein the preset threshold in the step S2 is 2/3 of the measuring range of the flowmeter (14).

7. The method as claimed in claim 5, wherein the opening degree of the regulating valve c in S3 is 100%, 75%, 50%, 25% and 0%, and S3 is repeated three times or more.

8. A pipeline plugging method according to claim 5, wherein the metal pipeline (3) in S4 is a metal hose with variable diameter.