Pipeline blockage detection device and detection method thereof

Abstract

The present invention provides a pipeline blockage detection device, comprising a test tube, a pre-test tube and a pressure regulating tube arranged on a flow outlet door of the test tube, the test tube is provided with a valve a and a flow meter, the two ends of the pressure regulating tube are respectively arranged on the test tube, the flow meter is located between the two ends of the pressure regulating tube, the pressure regulating valve and the pre-test tube are respectively provided with a valve b and a valve c, a pipeline blockage detection device blockage detection method, comprising selecting and installing a pre-test tube, adjusting the flow meter, experimental recording, replacing tools and detecting pipe blockage, by adjusting the valve, expanding the range of the flow meter, and making the flow meter work within the optimal range, before checking the blockage, by adjusting the valve on the pre-test tube, quantifying the flow data of the pipeline under different blockage degrees to be checked, and comparing and judging the blockage degree of the pipeline to be checked.

Description

Technical Field

[0001] The invention relates to the technical field of industrial detection equipment, and in particular to a pipeline blockage detection device and a detection method thereof. Background Art

[0002] As the national environmental protection situation becomes increasingly severe, most modern industrial production is gradually moving towards cleanliness. However, during the production process, dust and corrosive substances in special pipelines of the system can easily cause pipeline blockage. Preventing pipeline blockage and accurately understanding the medium pressure and flow in the pipeline are what must be pursued in industrial production. Common pipelines that are prone to blockage include CMS flue gas sampling pipelines in thermal power plants, coal mill material level differential pressure sampling pipelines, ammonia injection flowmeter pipelines, steel plant coal-fired boiler furnace negative pressure, furnace tube leak detection, etc.

[0003] Industrial equipment generally runs uninterruptedly for a long period of time. During equipment maintenance, the above-mentioned sampling pipelines that are prone to blockage need to be inspected, requiring high-precision blockage detection performance to facilitate timely discovery and unblocking of blocked pipelines. Summary of the invention

[0004] The purpose of the present invention is to provide a pipeline blockage detection device to solve the problem of low accuracy in blockage detection.

[0005] The present invention is achieved through the following technical solutions:

[0006] A pipeline blockage detection device comprises a test tube, a pre-test tube and a pressure regulating tube arranged on a flow outlet door of the test tube, wherein the test tube is provided with a valve a and a flow meter in sequence along the direction of fluid movement, the two ends of the pressure regulating tube are respectively arranged on the test tube, the flow meter is located between the two ends of the pressure regulating tube, and the pressure regulating valve and the pre-test tube are respectively provided with a valve b and a valve c.

[0007] Furthermore, a filter is provided on the calibration tube and the filter is located before the input end of the flow meter.

[0008] Prevent impurities in the fluid from interfering with the accuracy of the flow meter.

[0009] Furthermore, a level is provided on the calibration tube.

[0010] It is convenient for the testing personnel to operate in a standardized manner.

[0011] Furthermore, a handle is provided on the pressure regulating tube.

[0012] Furthermore, the pipeline blockage detection method comprises the following steps:

[0013] S1. Select a pre-calibration tube of the same specification as the blocked pipe to be detected, and install the pre-calibration tube on the flow outlet door of the calibration tube;

[0014] S2. Connect the fluid from the circulation inlet to the calibration tube, fully open valve a and valve c, close valve b, and observe the pointer of the flow meter. If the flow rate of the fluid exceeds the preset threshold of the flow meter, open valve c to adjust the flow rate through the flow meter so that the flow rate is controlled below the preset threshold of the flow meter;

[0015] S3. Adjust the opening and closing size of valve c and record the value on the flow meter;

[0016] S4. Close valve a, replace the pre-check tube with a metal hose, and connect the inspection tube to the blocked pipe to be inspected through the metal hose;

[0017] S5. Fully open valve a to let fluid in, observe the value on the flow meter and compare it with the opening and closing size of the corresponding valve c recorded in S3 to obtain the blockage condition of the blocked pipe to be detected.

[0018] Furthermore, the preset threshold value in S2 is 2 / 3 of the flow meter range.

[0019] Furthermore, the opening degrees of the regulating valve c in S3 are 100%, 75%, 50%, 25% and 0% respectively, and S3 needs to be repeated more than three times.

[0020] Furthermore, the metal pipe in S4 is a metal hose with a variable diameter.

[0021] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0022] 1. A pipeline blockage detection device of the present invention expands the range of a flow meter by adjusting valve b, and enables the flow meter to work within an optimal range;

[0023] 2. The present invention provides a pipeline blockage detection device. Before checking for blockage, the valve C on the pre-checking pipe can be adjusted to quantify the flow data of the pipeline under different blockage degrees, and the blockage degree of the pipeline under inspection can be compared and judged. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 It is a schematic diagram of the structure of the present invention a.

[0026] Figure 2 It is a schematic diagram of the structure of the calibration tube of the present invention.

[0027] Figure 3 This is a schematic diagram of the structure of the voltage regulating tube of the present invention.

[0028] Figure 4 This is a schematic diagram of the structure of the pre-check tube of the present invention.

[0029] Figure 5 This is a structural schematic diagram b of the present invention.

[0030] Marks and corresponding parts names in the attached drawings:

[0031] 1-test tube, 2-pressure regulating tube, 3-metal hose, 4-pre-calibration tube, 11-flow inlet door, 12-valve a, 13-filter, 14-flow meter, 15-level meter, 16-flow outlet door, 21-valve b, 22-handle, 41-valve c. DETAILED DESCRIPTION

[0032] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0033] The present invention is further described below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the following description.

[0034] Example 1

[0035] like Figure 1-5 As shown, a pipeline blockage detection device of the present invention comprises a test tube 1, a pre-test tube 4 arranged on a flow outlet door 16 of the test tube 1, and a pressure regulating tube 2, wherein the test tube 1 is provided with a valve a12 and a flow meter 14 in sequence along the fluid movement direction, the two ends of the pressure regulating tube 2 are respectively provided on the test tube 1, the flow meter 14 is located between the two ports of the pressure regulating tube 2, and the pressure regulating valve 2 and the pre-test tube 4 are provided with a valve b21 and a valve c41, respectively.

[0036] The calibration tube 1 is provided with a filter 13 and the filter 13 is located before the input end of the flow meter 4 .

[0037] Prevent impurities in the fluid from interfering with the accuracy of the flow meter 14.

[0038] The calibration tube 1 is provided with a level 15 .

[0039] It is convenient for the testing personnel to operate in a standardized manner.

[0040] The pressure regulating tube 2 is provided with a handle 22 .

[0041] Example 2

[0042] Based on Example 1, the pipeline blockage detection method of the device comprises the following steps:

[0043] S1. Select a pre-calibration tube 4 of the same specification as the blocked pipe to be detected, and install the pre-calibration tube 4 on the flow outlet door 16 of the calibration tube 1;

[0044] S2. Connect the fluid from the circulation inlet door 11 to the calibration tube 1, fully open valve a12 and valve c41, close valve b21, and observe the pointer of the flow meter 14. If the flow rate of the fluid exceeds the preset threshold of the flow meter 14, open valve c21 to adjust the flow rate through the flow meter 14 so that the flow rate is controlled below the preset threshold of the flow meter 14;

[0045] S3. Adjust the opening and closing size of valve c41 and record the value on the flow meter 14;

[0046] S4. Close valve a12, replace the pre-check tube 4 with a metal hose 3, and connect the check tube 1 to the blocked pipe to be tested through the metal hose 3;

[0047] S5. Fully open valve a12 to let fluid in, observe the value on the flow meter 14 and compare it with the opening and closing size of the corresponding valve c41 recorded in S3 to find out the blockage condition of the blocked pipeline to be detected.

[0048] The preset threshold value in S2 is 2 / 3 of the range of the flow meter 14.

[0049] The opening degrees of the regulating valve c in S3 are 100%, 75%, 50%, 25% and 0% respectively, and S3 needs to be repeated more than three times.

[0050] The metal pipe 3 in S4 is a metal hose with a variable diameter.

[0051] The present invention provides a pipeline blockage detection device. By adjusting a valve b21, the range of a flow meter 14 is expanded, and the flow meter 14 is made to work within an optimal range. Before checking for blockage, the valve c41 on a pre-checking pipe 4 is adjusted to quantify flow data of the pipeline under different blockage degrees, and the blockage degree of the pipeline under inspection is compared and judged.

[0052] Example 3

[0053] Based on Example 1, the pipeline blockage detection method of the device comprises the following steps:

[0054] S1. Select a pre-calibration tube 4 of the same specification as the blocked pipe to be detected, and install the pre-calibration tube 4 on the flow outlet door 16 of the calibration tube 1;

[0055] S2. Connect the fluid from the circulation inlet door 11 to the calibration tube 1, fully open valve a12 and valve c41, close valve b21, and observe the pointer of the flow meter 14. If the flow rate of the fluid exceeds the preset threshold of the flow meter 14, open valve a12 to adjust the flow rate through the flow meter 14 so that the flow rate is controlled below the preset threshold of the flow meter 14;

[0056] S3. Adjust the opening and closing size of valve c41 and record the value on the flow meter 14;

[0057] S4. Close valve a12, replace the pre-check tube 4 with a metal hose 3, and connect the check tube 1 to the blocked pipe to be tested through the metal hose 3;

[0058] S5. Fully open valve a12 to let fluid in, observe the value on the flow meter 14 and compare it with the opening and closing size of the corresponding valve c41 recorded in S3 to find out the blockage condition of the blocked pipeline to be detected.

[0059] Furthermore, the preset threshold value in S2 is 2 / 3 of the range of the flow meter 14.

[0060] Furthermore, the opening degrees of the regulating valve c in S3 are 100%, 75%, 50%, 25% and 0% respectively, and S3 needs to be repeated more than three times.

[0061] Furthermore, the metal pipe 3 in S4 is a metal hose with a variable diameter.

[0062] The present invention provides a pipeline blockage detection device. By adjusting a valve a12, the range of a flow meter 14 is expanded, and the flow meter 14 is made to work within an optimal range. Before checking for blockage, the valve c41 on a pre-checking pipe 4 is adjusted to quantify flow data of the pipeline under different blockage degrees, and the blockage degree of the pipeline under inspection is compared and judged.

[0063] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A pipeline blockage detection method, using a pipeline blockage detection device for blockage detection, the pipeline blockage detection device comprising a test tube (1), a pre-check tube (4) and a pressure regulating tube (2) arranged on a flow outlet door (16) of the test tube (1), the test tube (1) being provided with a valve a (12) and a flow meter (14) in sequence along the fluid movement direction, the two ends of the pressure regulating tube (2) being respectively arranged on the test tube (1), the flow meter (14) being located between the two ends of the pressure regulating tube (2), the pressure regulating tube (2) and the pre-check tube (4) being provided with a valve b (21) and a valve c (41) respectively; the test tube (1) being provided with a filter (13) and the filter (13) being located before the input end of the flow meter (14); the test tube (1) being provided with a level meter (15); the pressure regulating tube (2) being provided with a handle (22), characterized in that: The pipeline blockage detection method comprises the following steps: S1. Select a pre-check tube (4) of the same specification as the blocked pipe to be tested, and install the pre-check tube (4) on the flow outlet door (16) of the test tube (1); S2. Connect the fluid to the inspection tube (1) through the circulation inlet door (11), fully open valve a (12) and valve c (41), close valve b (21), and observe the pointer of the flow meter (14). If the flow rate of the fluid exceeds the preset threshold value of the flow meter (14), open valve c (41) to adjust the flow rate through the flow meter (14) so ​​that the flow rate is controlled below the preset threshold value of the flow meter (14); S3. Adjust the opening and closing size of valve c (41) and record the value on the flow meter (14); S4. Close valve a (12), replace the pre-test tube (4) with a metal hose (3), and connect the test tube (1) to the blocked pipe to be tested through the metal hose (3); S5. Fully open valve a (12) to let fluid in, observe the value on the flow meter (14) and compare it with the opening and closing size of the corresponding valve c (41) recorded in S3 to obtain the blockage condition of the blocked pipeline to be detected.

2. A pipeline blockage detection method according to claim 1, characterized in that: The preset threshold value in S2 is 2 / 3 of the range of the flow meter (14).

3. A pipeline blockage detection method according to claim 1, characterized in that: The opening degrees of the regulating valve c in S3 are 100%, 75%, 50%, 25% and 0% respectively, and S3 needs to be repeated more than three times.

4. A pipeline blockage detection method according to claim 1, characterized in that: The metal hose (3) in S4 is a metal hose with a variable diameter.

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