Fire-fighting pipe network defect positioning and detection method

Abstract

The application discloses a fire-fighting pipe network defect positioning and detection method, which comprises the following steps: step 1: visual inspection: regularly inspecting the fire-fighting pipe system to observe whether there are water leakage, corrosion or other visible damage signs; step 2: ultrasonic detection: using ultrasonic technology to detect cracks, holes or foreign matters and other problems in the pipe, which can non-destructively detect the internal structure of the pipe; step 3: infrared thermal imaging detection: using infrared thermal imaging technology to detect the temperature change of the pipe surface to help determine whether the pipe has abnormal conditions; step 4: smoke test; step 5: electromagnetic detection; and step 6: liquid tracer. Through the setting of the visual inspection, the ultrasonic detection, the infrared thermal imaging detection, the smoke test, the electromagnetic detection and the liquid tracer, the underground fire-fighting pipe network can be positioned and detected in time and quickly, so that the operation safety of the underground fire-fighting pipe network is effectively ensured.

Description

Technical Field

[0001] This invention relates to the field of fire protection pipeline inspection technology, and in particular to a method for locating and detecting defects in fire protection pipelines. Background Technology

[0002] Firefighting pipelines refer to pipeline materials used for fire protection, connecting firefighting equipment and materials, and transporting firefighting water, gas or other media. Due to special requirements, firefighting pipelines have special requirements for thickness and material, and are painted red for transporting firefighting water.

[0003] Water pressure testing devices for fire protection pipelines are important equipment used to ensure that the fire protection system can provide sufficient water pressure to effectively extinguish fires when a fire occurs. Currently, water pressure sensors are usually installed at key locations or on equipment in the pipeline, such as fire pump outlets and fire hydrants, to detect the water flow pressure in the pipeline network.

[0004] Rapid and automatic detection of surface cracks in fire protection pipe networks is a current technical challenge. Existing technologies cannot quickly and timely locate and detect defects in underground fire protection pipe networks, thus affecting the operational safety of underground fire protection pipe networks. Summary of the Invention

[0005] 1. Technical problems to be solved

[0006] The purpose of this invention is to solve the problem that existing technologies cannot quickly and timely locate and detect defects in underground fire protection pipe networks, and to propose a method for locating and detecting defects in fire protection pipe networks.

[0007] 2. Technical Solution

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] A method for locating and detecting defects in fire protection pipe networks includes the following steps:

[0010] Step 1: Visual inspection: Regularly inspect the fire protection piping system to observe for leaks, corrosion or other visible signs of damage;

[0011] Step 2: Ultrasonic testing: Ultrasonic technology is used to detect problems such as cracks, holes or foreign objects in pipes, and can non-destructively test the internal structure of pipes.

[0012] Step 3: Infrared thermal imaging detection: Infrared thermal imaging technology is used to detect temperature changes on the pipe surface to help determine if there are any abnormalities in the pipe;

[0013] Step 4: Smoke test: Inject smoke into the piping system and observe whether the smoke outlet is discharging normally to check for problems such as pipe connection and unobstructed flow;

[0014] Step 5: Electromagnetic detection: Utilize electromagnetic technology to detect changes in the magnetic field of the pipeline and identify potential pipeline defects or foreign objects;

[0015] Step 6: Liquid tracer: Add a special liquid tracer to the piping system to locate leaks or other defects by detecting its flow path, and observe whether there is liquid discharge containing tracer at the outlet of the piping system or at possible leak locations.

[0016] Preferably, the visual inspection in step 1 specifically includes the following steps:

[0017] S1.1: External Inspection: First, inspect the exterior of the fire protection piping system for obvious signs of rust, deformation, or leakage. Pay special attention to connections and bends;

[0018] S1.2: Internal inspection: If conditions permit, the interior of the piping system can be accessed through inspection ports or other means to inspect the inside of the pipes with lights or cameras to observe for problems such as cracks, foreign objects or blockages.

[0019] S1.3: Record observation results: Record in detail the problems found during the inspection process, including information such as location, size, and severity, for subsequent processing and follow-up.

[0020] Preferably, the ultrasonic testing in step 2 specifically includes the following steps:

[0021] S2.1: Setting parameters: Based on the characteristics of the pipe material, thickness, etc., set appropriate ultrasonic frequency, amplitude, and probe spacing parameters;

[0022] S2.2: Sensor Placement: Attach the ultrasonic sensor to the pipe surface and ensure good contact to ensure accurate signal transmission;

[0023] S2.3: Scanning detection: The entire pipeline system is scanned by moving a sensor on the outer surface of the pipeline, and the ultrasonic signals are recorded and analyzed;

[0024] S2.4: Data Analysis: Analyze the acquired ultrasonic signals to identify possible abnormal signals, such as cracks, corrosion, or foreign objects. Defects typically cause signal reflection or absorption.

[0025] S2.5: Locating Defects: Based on the analysis results, determine the location, shape, and severity of the defects, and draw a defect diagram of the piping system.

[0026] Preferably, step 3, infrared thermal imaging detection, specifically includes the following steps:

[0027] S3.1: Setting parameters: Adjust the settings of the infrared thermal imaging equipment according to the pipe material and environmental conditions, including parameters such as temperature range, color band, and contrast.

[0028] S3.2: Scanning Inspection: Using an infrared thermal imaging instrument, move along the surface of the piping system to capture the temperature distribution on the pipe surface and acquire thermal images;

[0029] S3.3: Analysis Results: By analyzing the thermal images, check whether there are any abnormal hot spots or leaks in the pipeline system. Abnormal hot spots may indicate potential problems in the pipeline system.

[0030] S3.4: Anomaly Location: Based on the abnormal areas in the thermal image, determine the approximate range of the problem location, which helps with subsequent further detection and repair.

[0031] Preferably, step 4, the smoke test, specifically includes the following steps:

[0032] S4.1: Select a smoke source: Select a smoke source suitable for the piping system, typically using specially designed non-toxic, colorless smoke for testing;

[0033] S4.2: Inject smoke: Inject smoke into the piping system through a suitable pipe inlet to ensure that the smoke can fully diffuse and flow to the outlet;

[0034] S4.3: Observe the smoke vents: Observe for smoke emissions at the outlets of the piping system or other potential leak locations. Any emitted smoke may indicate a leak or connection problem;

[0035] S4.4: Locating the problem: By observing the location and situation of smoke emissions, the location of the vulnerability or connection problem can be roughly determined.

[0036] Preferably, the electromagnetic detection in step 5 specifically includes the following steps:

[0037] S5.1: Select the appropriate probe: Choose the appropriate electromagnetic detection probe based on the pipe material and diameter. Different types of pipes may require different probes to achieve the best detection results.

[0038] S5.2: Scanning Detection: As needed, place the electromagnetic detection probe near the pipeline system, move the probe and scan the entire pipeline system to capture electromagnetic signals around the pipeline.

[0039] S5.3: Analysis Results: Analyze the detected electromagnetic signals to determine if there are any abnormalities in the pipeline system, such as damage, corrosion, or other problems with the metal pipes.

[0040] Preferably, the liquid tracer in step 6 includes a fluorescent liquid tracer, a color-marked tracer, an odor additive, a biodegradable tracer, a water-soluble tracer, or a high-concentration tracer.

[0041] This invention also proposes a fire protection pipeline defect location and detection system, including data acquisition equipment, sensor network, data processing and analysis system, remote monitoring system, automatic alarm system, GIS system and maintenance management system.

[0042] Preferably, the data acquisition equipment includes ultrasonic detectors, infrared thermal imagers, and electromagnetic detection equipment, etc., for collecting relevant data of the pipeline system; the sensor network includes sensors deployed at various points in the pipeline system for real-time monitoring of parameters such as temperature, pressure, and flow rate.

[0043] 3. Beneficial effects

[0044] Compared with the prior art, the advantages of this invention are:

[0045] In this invention, by using methods such as visual inspection, ultrasonic detection, infrared thermal imaging detection, smoke testing, electromagnetic detection, and liquid tracers, defects in underground fire protection pipe networks can be located and detected in a timely and rapid manner, thereby effectively ensuring the operational safety of underground fire protection pipe networks. Attached Figure Description

[0046] Figure 1 This is a flowchart illustrating a method for locating and detecting defects in fire protection pipe networks proposed in this invention.

[0047] Figure 2 This is a schematic diagram of the ultrasonic testing process in a fire protection pipeline defect location and detection method proposed in this invention.

[0048] Figure 3 This is a schematic diagram of the infrared thermal imaging detection process in the fire protection pipeline defect location and detection method proposed in this invention;

[0049] Figure 4 This is a schematic diagram of the smoke test process in a fire protection pipeline defect location and detection method proposed in this invention;

[0050] Figure 5 This is a schematic diagram of the electromagnetic detection process in a fire protection pipeline defect location and detection method proposed in this invention;

[0051] Figure 6 This is a schematic diagram of the composition of a fire protection pipeline defect location and detection system proposed in this invention. Detailed Implementation

[0052] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0053] Example 1:

[0054] Reference Figure 1 A method for locating and detecting defects in fire protection pipe networks, comprising the following steps:

[0055] Step 1: Visual inspection: Regularly inspect the fire protection piping system to observe for leaks, corrosion or other visible signs of damage;

[0056] Step 2: Ultrasonic testing: Ultrasonic technology is used to detect problems such as cracks, holes or foreign objects in pipes, and can non-destructively test the internal structure of pipes.

[0057] Step 3: Infrared thermal imaging detection: Infrared thermal imaging technology is used to detect temperature changes on the pipe surface to help determine if there are any abnormalities in the pipe;

[0058] Step 4: Smoke test: Inject smoke into the piping system and observe whether the smoke outlet is discharging normally to check for problems such as pipe connection and unobstructed flow;

[0059] Step 5: Electromagnetic detection: Utilize electromagnetic technology to detect changes in the magnetic field of the pipeline and identify potential pipeline defects or foreign objects;

[0060] Step 6: Liquid tracer: Add a special liquid tracer to the piping system. The liquid tracer may include fluorescent liquid tracers, color-marked tracers, odor additives, biodegradable tracers, water-soluble tracers, or high-concentration tracers. Locate leaks or other defects by detecting their flow path, and observe whether there is liquid discharge containing tracer at the outlet of the piping system or at possible leak locations.

[0061] In this invention, reference is made to Figure 6 A fire protection pipeline defect location and detection system includes data acquisition equipment, sensor network, data processing and analysis system, remote monitoring system, automatic alarm system, GIS system and maintenance management system;

[0062] In this invention, the data acquisition equipment includes ultrasonic detectors, infrared thermal imagers, and electromagnetic detection equipment, etc., for collecting relevant data of the pipeline system; the sensor network includes sensors deployed at various points in the pipeline system for real-time monitoring of parameters such as temperature, pressure, and flow rate.

[0063] In this invention, the data processing and analysis system collects, stores, analyzes, and presents the test results through data processing software, helping to identify potential defects and generate reports.

[0064] In this invention, the remote monitoring function enables remote monitoring of the fire protection pipeline network status, timely detection of abnormalities, and corresponding measures. The automatic alarm system integrates alarm functionality; when the system detects pipeline defects or abnormalities, it can automatically trigger an alarm for emergency handling.

[0065] In this invention, the GIS system is used to display the pipeline network structure, inspection results, and defect locations, helping to quickly locate problem areas. The maintenance management system is used to record pipeline maintenance history, repair records, and plans, enabling the tracking and management of the overall health status of the fire protection pipeline network.

[0066] In this invention, by using methods such as visual inspection, ultrasonic detection, infrared thermal imaging detection, smoke testing, electromagnetic detection, and liquid tracers, defects in underground fire protection pipe networks can be located and detected in a timely and rapid manner, thereby effectively ensuring the operational safety of underground fire protection pipe networks.

[0067] Example 2:

[0068] In this embodiment, refer to Figure 2 Ultrasonic testing specifically includes the following steps:

[0069] S2.1: Setting parameters: Based on the characteristics of the pipe material, thickness, etc., set appropriate ultrasonic frequency, amplitude, and probe spacing parameters;

[0070] S2.2: Sensor Placement: Attach the ultrasonic sensor to the pipe surface and ensure good contact to ensure accurate signal transmission;

[0071] S2.3: Scanning detection: The entire pipeline system is scanned by moving a sensor on the outer surface of the pipeline, and the ultrasonic signals are recorded and analyzed;

[0072] S2.4: Data Analysis: Analyze the acquired ultrasonic signals to identify possible abnormal signals, such as cracks, corrosion, or foreign objects. Defects typically cause signal reflection or absorption.

[0073] S2.5: Locating Defects: Based on the analysis results, determine the location, shape, and severity of the defects, and draw a defect diagram of the piping system.

[0074] Example 3:

[0075] In this embodiment, refer to Figure 3 Infrared thermal imaging detection specifically includes the following steps:

[0076] S3.1: Setting parameters: Adjust the settings of the infrared thermal imaging equipment according to the pipe material and environmental conditions, including parameters such as temperature range, color band, and contrast.

[0077] S3.2: Scanning Inspection: Using an infrared thermal imaging instrument, move along the surface of the piping system to capture the temperature distribution on the pipe surface and acquire thermal images;

[0078] S3.3: Analysis Results: By analyzing the thermal images, check whether there are any abnormal hot spots or leaks in the pipeline system. Abnormal hot spots may indicate potential problems in the pipeline system.

[0079] S3.4: Anomaly Location: Based on the abnormal areas in the thermal image, determine the approximate range of the problem location, which helps with subsequent further detection and repair.

[0080] Example 4:

[0081] In this embodiment, refer to Figure 4 The smoke test specifically includes the following steps:

[0082] S4.1: Select a smoke source: Select a smoke source suitable for the piping system, typically using specially designed non-toxic, colorless smoke for testing;

[0083] S4.2: Inject smoke: Inject smoke into the piping system through a suitable pipe inlet to ensure that the smoke can fully diffuse and flow to the outlet;

[0084] S4.3: Observe the smoke vents: Observe for smoke emissions at the outlets of the piping system or other potential leak locations. Any emitted smoke may indicate a leak or connection problem;

[0085] S4.4: Locating the problem: By observing the location and situation of smoke emissions, the location of the vulnerability or connection problem can be roughly determined.

[0086] Example 5:

[0087] In this embodiment, refer to Figure 5 Electromagnetic detection specifically includes the following steps:

[0088] S5.1: Select the appropriate probe: Choose the appropriate electromagnetic detection probe based on the pipe material and diameter. Different types of pipes may require different probes to achieve the best detection results.

[0089] S5.2: Scanning Detection: As needed, place the electromagnetic detection probe near the pipeline system, move the probe and scan the entire pipeline system to capture electromagnetic signals around the pipeline.

[0090] S5.3: Analysis Results: Analyze the detected electromagnetic signals to determine if there are any abnormalities in the pipeline system, such as damage, corrosion, or other problems with the metal pipes.

[0091] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A method for locating and detecting defects in fire protection pipe networks, characterized in that, Includes the following steps: Step 1: Visual inspection: Regularly inspect the fire protection piping system to observe for leaks, corrosion or other visible signs of damage; Step 2: Ultrasonic testing: Ultrasonic technology is used to detect problems such as cracks, holes or foreign objects in pipes, and can non-destructively test the internal structure of pipes. Step 3: Infrared thermal imaging detection: Infrared thermal imaging technology is used to detect temperature changes on the pipe surface to help determine if there are any abnormalities in the pipe; Step 4: Smoke test: Inject smoke into the piping system and observe whether the smoke outlet is discharging normally to check for problems such as pipe connection and unobstructed flow; Step 5: Electromagnetic detection: Utilize electromagnetic technology to detect changes in the magnetic field of the pipeline and identify potential pipeline defects or foreign objects; Step 6: Liquid tracer: Add a special liquid tracer to the piping system to locate leaks or other defects by detecting its flow path, and observe whether there is liquid discharge containing tracer at the outlet of the piping system or at possible leak locations.

2. The method for locating and detecting defects in fire protection pipe networks according to claim 1, characterized in that, The visual inspection in step 1 specifically includes the following steps: S1.1: External Inspection: First, inspect the exterior of the fire protection piping system for obvious signs of rust, deformation, or leakage. Pay special attention to connections and bends; S1.2: Internal inspection: If conditions permit, the interior of the piping system can be accessed through inspection ports or other means to inspect the inside of the pipes with lights or cameras to observe for problems such as cracks, foreign objects or blockages. S1.3: Record observation results: Record in detail the problems found during the inspection process, including information such as location, size, and severity, for subsequent processing and follow-up.

3. The method for locating and detecting defects in fire protection pipe networks according to claim 1, characterized in that, Step 2, the ultrasonic testing, specifically includes the following steps: S2.1: Setting parameters: Based on the characteristics of the pipe material, thickness, etc., set appropriate ultrasonic frequency, amplitude, and probe spacing parameters; S2.2: Sensor Placement: Attach the ultrasonic sensor to the pipe surface and ensure good contact to ensure accurate signal transmission; S2.3: Scanning detection: The entire pipeline system is scanned by moving a sensor on the outer surface of the pipeline, and the ultrasonic signals are recorded and analyzed; S2.4: Data Analysis: Analyze the acquired ultrasonic signals to identify possible abnormal signals, such as cracks, corrosion, or foreign objects. Defects typically cause signal reflection or absorption. S2.5: Locating Defects: Based on the analysis results, determine the location, shape, and severity of the defects, and draw a defect diagram of the piping system.

4. The method for locating and detecting defects in fire protection pipe networks according to claim 1, characterized in that, Step 3, infrared thermal imaging detection, specifically includes the following steps: S3.1: Setting parameters: Adjust the settings of the infrared thermal imaging equipment according to the pipe material and environmental conditions, including parameters such as temperature range, color band, and contrast. S3.2: Scanning Inspection: Using an infrared thermal imaging instrument, move along the surface of the piping system to capture the temperature distribution on the pipe surface and acquire thermal images; S3.3: Analysis Results: By analyzing the thermal images, check whether there are any abnormal hot spots or leaks in the pipeline system. Abnormal hot spots may indicate potential problems in the pipeline system. S3.4: Anomaly Location: Based on the abnormal areas in the thermal image, determine the approximate range of the problem location, which helps with subsequent further detection and repair.

5. The method for locating and detecting defects in fire protection pipe networks according to claim 1, characterized in that, Step 4, the smoke test, specifically includes the following steps: S4.1: Select a smoke source: Select a smoke source suitable for the piping system, typically using specially designed non-toxic, colorless smoke for testing; S4.2: Inject smoke: Inject smoke into the piping system through a suitable pipe inlet to ensure that the smoke can fully diffuse and flow to the outlet; S4.3: Observe the smoke vents: Observe for smoke emissions at the outlets of the piping system or other potential leak locations. Any emitted smoke may indicate a leak or connection problem; S4.4: Locating the problem: By observing the location and situation of smoke emissions, the location of the vulnerability or connection problem can be roughly determined.

6. The method for locating and detecting defects in fire protection pipe networks according to claim 1, characterized in that, Step 5, the electromagnetic detection, specifically includes the following steps: S5.1: Select the appropriate probe: Choose the appropriate electromagnetic detection probe based on the pipe material and diameter. Different types of pipes may require different probes to achieve the best detection results. S5.2: Scanning Detection: As needed, place the electromagnetic detection probe near the pipeline system, move the probe and scan the entire pipeline system to capture electromagnetic signals around the pipeline. S5.3: Analysis Results: Analyze the detected electromagnetic signals to determine if there are any abnormalities in the pipeline system, such as damage, corrosion, or other problems with the metal pipes.

7. The method for locating and detecting defects in fire protection pipe networks according to claim 1, characterized in that, The liquid tracer in step 6 includes fluorescent liquid tracers, color-marked tracers, odor additives, biodegradable tracers, water-soluble tracers, or high-concentration tracers.

8. A detection system for the method of locating and detecting defects in a fire protection pipeline network as described in claim 1, characterized in that, It includes data acquisition equipment, sensor networks, data processing and analysis systems, remote monitoring systems, automatic alarm systems, GIS systems, and maintenance and management systems.

9. The detection system according to claim 8, characterized in that, The data acquisition equipment includes ultrasonic detectors, infrared thermal imagers, and electromagnetic detection equipment, which are used to collect relevant data from the pipeline system; the sensor network includes sensors deployed throughout the pipeline system for real-time monitoring of parameters such as temperature, pressure, and flow rate.

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