Ultrasonic flaw detection coupling water recycling treatment system

Abstract

This application relates to the field of ultrasonic flaw detection equipment technology and discloses an ultrasonic flaw detection coupling water recycling and treatment system, including a water collection and sedimentation tank, a lift pump, a paper tape filter, a stainless steel water tank, a water supply pump, a bag filter, and an ultrasonic flaw detection host. The water collection and sedimentation tank is connected to the water inlet of the lift pump, and the water outlet of the lift pump is connected to the paper tape filter above the stainless steel water tank. The water absorption area inside the stainless steel water tank is connected to the water supply pump inlet, and the water supply pump outlet is connected to the bag filter. The bag filter is connected to the water inlet pipe of the ultrasonic flaw detection host, and the drain hole of the ultrasonic flaw detection host is connected to the water collection and sedimentation tank. This invention removes impurities in the coupling water through a graded filtration structure to prevent sedimentation. The water supply pipe injects water tangentially into the rotating water chamber of the ultrasonic flaw detection host to form a dynamic water chamber, preventing air bubbles from interfering with the ultrasonic signal. After the equipment stops supplying water, the rotating water chamber discharges the remaining water, allowing the phased array probe to escape the long-term immersion state and extending its service life.

Description

Technical Field

[0001] This invention relates to the field of ultrasonic flaw detection equipment technology, specifically to an ultrasonic flaw detection coupled water recycling and treatment system. Background Technology

[0002] In ultrasonic testing of metal bars, the coupling water serves as the medium for transmitting ultrasonic waves, and its quality and supply status directly affect the accuracy of the testing results. Existing ultrasonic testing coupling water circulation systems have structural and operational shortcomings in practice.

[0003] Existing water circulation systems lack effective graded physical filtration structures, failing to adequately filter out suspended solids and impurities carried in the reflux coupling water. These impurities, after entering the system with the circulating water, deposit inside the ultrasonic flaw detector and on the surface of the phased array probe, reducing the cleanliness of the circulating coupling water and shortening the lifespan of the detection equipment. The existing system's gas removal structure in the pipeline water flow is inadequate, and it lacks a dynamic adjustment mechanism for water flow and pressure. Unremoved air bubbles enter the flaw detection area with the water flow, causing physical interference with the ultrasonic detection signal and resulting in insufficient stability during the flaw detection process. Furthermore, the existing water supply structure inside the ultrasonic flaw detector makes it difficult to create a stable dynamic water circulation within the cavity, and the gap between the water cavity and the surface of the rod being tested cannot be continuously filled, leading to fluctuations in the ultrasonic coupling state. After the equipment stops operating, coupling water usually remains in the conventional cavity, causing the phased array probe to be in a prolonged immersion state, further affecting the probe's detection performance. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides an ultrasonic flaw detection coupled water recycling system, which solves the problems of impurity deposition and signal interference caused by the lack of effective graded physical filtration and bubble elimination mechanisms in existing ultrasonic flaw detection coupled water recycling systems, as well as the inability of the host water supply structure to form a stable dynamic water circulation, resulting in long-term immersion of the probe and affecting detection performance.

[0005] To achieve the above objectives, the present invention provides the following technical solution: This invention provides an ultrasonic flaw detection coupled water recycling and treatment system, including a water collection and sedimentation tank, a booster pump, a paper tape filter, a stainless steel water tank, a water supply pump, a bag filter, and an ultrasonic flaw detector. The water collection and sedimentation tank is connected to the inlet of the booster pump; the outlet of the booster pump is connected to the top of the stainless steel water tank via a pipeline, and a paper tape filter is installed on the top of the stainless steel water tank; the paper tape filter is connected to the water inlet area inside the stainless steel water tank; the water suction area inside the stainless steel water tank is connected to the inlet of the water supply pump via a pipeline; the outlet of the water supply pump is connected to the bag filter; the bag filter is connected to the water inlet pipeline of the ultrasonic flaw detector; and the drain hole at the bottom of the ultrasonic flaw detector is connected to the water collection and sedimentation tank.

[0006] This invention forms a closed-loop circulation system for the coupling water through the aforementioned pipeline connection structure. The impurity-laden return water discharged from the ultrasonic flaw detector sequentially undergoes gravity sedimentation in a collection sedimentation tank, coarse filtration in a paper tape filter, and fine filtration in a bag filter, achieving graded purification of the coupling water. This graded filtration structure removes suspended solids and impurities from the coupling water, preventing impurities from depositing inside the ultrasonic flaw detector, ensuring the detection performance of the phased array probe, and extending the service life of system components.

[0007] Furthermore, a vertical partition wall is installed inside the water collection sedimentation tank, which divides the internal space of the water collection sedimentation tank into a sedimentation area and a lift pump suction area; a stainless steel filter screen is installed on the upper part of the partition wall; the drainage hole at the bottom of the ultrasonic flaw detector is connected to the sedimentation area; the lift pump suction area is connected to the inlet end of the lift pump; a high-level overflow port is installed on the side wall of the lift pump suction area, and an overflow pipe is connected to the outside of the high-level overflow port.

[0008] Furthermore, a partition is installed in the middle of the stainless steel water tank, dividing the internal space into an inlet area and a suction area. A stainless steel filter screen is installed on the upper part of the partition. A high-level overflow port is provided in the suction area, and an overflow pipe connects to the overflow pipe, which in turn connects to the suction area of ​​the booster pump in the sedimentation tank. In this structure, the partition and stainless steel filter screen inside the stainless steel water tank serve to generate defoaming and buffering effects, and the overflow pipe between the sedimentation tank and the stainless steel water tank maintains a dynamic balance of water volume within the system.

[0009] Furthermore, a fresh water supply pipe is connected above the water intake area of ​​the stainless steel water tank, and a shut-off valve is installed on the fresh water supply pipe; an anti-foaming device is installed inside the water intake area of ​​the stainless steel water tank, and the anti-foaming device is installed at the inlet of the water supply pump's suction pipe. The anti-foaming device is used to remove air bubbles at the front end of the water supply pump's suction, preventing air bubbles from entering the detection area and interfering with the ultrasonic signal.

[0010] Furthermore, the paper belt filter is equipped with an internal transmission mechanism, which includes a chain and a wire mesh; filter cloth is laid on the chain and wire mesh; the paper belt filter is equipped with a water flow buffer device, a liquid level controller, and a speed reducer. The bag filter contains filter bags; the filter bags are either rigid ring filter bags or fully welded hot-melt filter bags; the filter bag materials are pure polypropylene, polyester, wool, viscose fiber, polyaramid, or polytetrafluoroethylene; the bag filter is equipped with a sealing ring.

[0011] Furthermore, a control valve is installed at the front end of the water inlet pipe of the ultrasonic flaw detector, including a pressure gauge and an electric control valve; the system is equipped with an electrical control system; the booster pump and the water supply pump are driven by variable frequency motors. The electrical control system, combined with the variable frequency motor drive mechanism, is used to regulate the output flow rate and pressure, providing a stable purified water supply to the ultrasonic flaw detector and maintaining stable flow rate and water pressure parameters in the ultrasonic coupling state.

[0012] Furthermore, the ultrasonic flaw detector main unit includes a water supply pipe, a phased array probe, a guide sleeve, a rotating water cavity, a rubber seal, and a water collection tray; a water collection tray is provided at the bottom of the ultrasonic flaw detector main unit, and a drain hole is provided on the water collection tray; a water spray nozzle is provided inside the rotating water cavity; the water spray nozzle is distributed circumferentially along the rotating water cavity; the water supply pipe is connected to the rotating water cavity at a tangential position; and an air-water descaling device is provided at the front end of the ultrasonic flaw detector main unit.

[0013] The tangential connection structure of the water supply pipe creates a dynamic water chamber within the rotating water cavity. High-speed dynamic water circulation is used to flush and remove impurities from the surface of the phased array probe, and the remaining coupling water is discharged after the equipment stops supplying water, thus freeing the phased array probe from long-term immersion.

[0014] This invention provides an ultrasonic flaw detection coupled with a water recycling and treatment system. It has the following beneficial effects: 1. This invention employs a combined structure of a water collection sedimentation tank, a paper tape filter, and a bag filter to perform graded treatment of the returned coupling water. This physical filtration method removes suspended solids and impurities from the water, preventing impurities from depositing inside the ultrasonic flaw detector and on the surface of the phased array probe. Graded purification ensures the cleanliness of the circulating coupling water and extends the service life of the detection equipment.

[0015] 2. This invention incorporates a baffle plate with a stainless steel filter screen inside the stainless steel water tank and an anti-foaming device at the water pump inlet. The water supply pipeline is regulated by a variable frequency motor and electrical control system. The baffle plate and anti-foaming device remove air bubbles from the water flow, while the variable frequency control maintains a match between the output flow rate and pressure. The stable, bubble-free coupling water provided by the water supply system prevents air bubbles from interfering with the ultrasonic signal, ensuring the stability of the flaw detection process.

[0016] 3. The ultrasonic flaw detector of this invention uses a tangentially connected water supply pipe to inject water into the rotating water chamber, forming a high-speed dynamic water circulation within the chamber. The tangentially injected water flow fills the gap between the rotating water chamber and the surface of the rod to be tested, maintaining the stability of the ultrasonic coupling state. After the equipment stops supplying water, the remaining water in the rotating water chamber is drained, allowing the phased array probe to escape the long-term immersion state, further ensuring the probe's detection performance. Attached Figure Description

[0017] Figure 1 This is a system architecture diagram of the present invention. Detailed Implementation

[0018] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Please see the appendix Figure 1 This invention provides an ultrasonic flaw detection coupling water recycling and treatment system, including a water collection sedimentation tank, a lift pump, a paper tape filter, a stainless steel water tank, a water supply pump, a bag filter, and an ultrasonic flaw detection unit. The stainless steel water tank is connected to a fresh water supply pipeline, which is equipped with a shut-off valve. The inlet end of the water supply pump is equipped with a shut-off valve and an anti-foaming device. A pressure gauge and an electrically controlled valve are installed on the pipeline between the water supply pump and the ultrasonic flaw detection unit. An air-water descaling device is installed at the front end of the ultrasonic flaw detection unit. The system's workflow is as follows: the coupling water used by the ultrasonic flaw detection unit is returned to the water collection sedimentation tank for sedimentation and filtration. The lift pump draws water from the sedimentation tank and delivers it to the paper tape filter. After being processed by the paper tape filter, the water flows into the inlet area inside the stainless steel water tank and passes through a filter screen into the suction area. Subsequently, the water supply pump draws water from the suction area and delivers it to the bag filter for fine filtration. The filtered water is then transported to the ultrasonic flaw detection unit for use. Before flaw detection, the air-water descaling device sprays a mixture of compressed air and low-pressure water onto the surface of the bar being inspected to remove dust, deposits, and loose iron oxide scale.

[0020] After the ultrasonic flaw detector completes the flaw detection, the used coupling water carrying impurities flows back to the sedimentation area of ​​the sedimentation tank through the bottom collection tray and drain hole. The sedimentation tank is 3.6 meters long, 1.6 meters wide, and 1.6 meters deep. An internal vertical partition wall divides the interior space into two independent areas: a 2-meter-long sedimentation area and a booster pump suction area. The returning coupling water first flows into the sedimentation area for sedimentation treatment. A stainless steel filter screen is installed on the upper part of the partition wall to prevent large suspended particles in the sedimentation area from entering the booster pump suction area. A dustproof cover made of wood or plastic is installed on the top of the sedimentation tank to prevent dust and debris from the external environment from falling inside. A high-level overflow port is installed on the side wall of the booster pump suction area, connecting to an overflow pipe leading to the external slag flushing ditch. When the water level rises to the position of the high-level overflow outlet, the excess water is discharged outward into the slag flushing ditch through the overflow pipe, preventing the water in the water collection and sedimentation tank from overflowing onto the ground after it is full.

[0021] After sedimentation, the water in the sedimentation tank flows into the suction area of ​​the booster pump. The booster pump, driven by a variable frequency motor, has its inlet connected to the suction area and its outlet connected to the top of a stainless steel water tank via a pipeline. The variable frequency motor controls the output flow of the booster pump by setting its frequency, achieving a balance between the return flow from the sedimentation tank and the output flow of the booster pump. The booster pump extracts relatively clean water from its suction area and delivers it to the stainless steel water tank above, where a paper belt filter is installed. The paper belt filter performs coarse filtration with a filtration accuracy of 50μm or higher. The paper belt filter has an internal transmission mechanism consisting of a chain and a wire mesh, forming a specific liquid pool depth. Filter cloth is laid on the chain and wire mesh, and the contaminated liquid, containing impurities, flows onto the filter cloth after passing through a water flow buffer device. Due to gravity, the filter cloth blocks impurities and forms a filter cake on its surface. As the filter cake thickness gradually increases, the liquid level rises, causing the level controller to float and trigger the reducer to start rotating. The speed reducer pulls the filter cloth forward, and the dirt and soiled filter cloth fall into the dirty cardboard box for automatic replacement. After the filter cloth is replaced, the level of the dirty liquid drops, and the speed reducer stops rotating, entering the next filtration cycle. The pure liquid filtered by the paper belt filter flows into the inlet area of ​​the stainless steel water tank.

[0022] The stainless steel water tank serves as a buffer and storage container. An internal partition divides the space into an inlet area and a suction area. The upper part of the partition houses a stainless steel filter screen for filtration and defoaming; liquid from the inlet area passes through this screen before entering the suction area. The suction area has a high-level overflow port connected to an overflow pipe. When the system water volume is unbalanced, the overflowing water flows through the overflow pipe into the suction area of ​​the booster pump in the sedimentation tank. Above the suction area is a fresh water supply line with a shut-off valve to replenish water lost due to evaporation and leakage. A defoaming device is also installed at the inlet of the water supply pump's suction pipe within the suction area to ensure that the water drawn in by the pump is free of air bubbles.

[0023] Water from the stainless steel water tank's suction area, after being treated by a defoaming device, enters the inlet of the water supply pump. The water supply pump is driven by a variable frequency motor, and a shut-off valve at the inlet is used to cut off the water supply during maintenance. The system is equipped with an electrical control system to perform automatic water supply and filtration functions. A control valve, including a pressure gauge and an electric control valve, is installed at the front end of the ultrasonic flaw detector's inlet pipe. The system uses a PLC to control and regulate the water supply pump's output flow rate and pressure to match the ultrasonic flaw detector's requirements, thereby providing a continuous and stable water supply and ensuring stable water pressure and flow rate. The stable water flow from the water supply pump enters a bag filter at the outlet for fine filtration. The bag filter has a filtration accuracy of over 20μm, a filtration range of 1μm to 200μm, and is equipped with a sealing ring to ensure the system's sealing reliability. The internal filter bags are either rigid ring filter bags or fully welded hot-melt filter bags, made of pure polypropylene, polyester, wool, viscose fiber, polyaramid, or polytetrafluoroethylene. Liquid flows from the inner surface of the filter bag to the outer surface, and the filtered particulate impurities are trapped inside, ensuring that the downstream liquid will not be contaminated when the filter bag is replaced. The handle designed inside the filter bag makes replacement convenient.

[0024] A continuous and stable water supply, finely filtered by a bag filter, enters the ultrasonic flaw detector unit through pipelines. The ultrasonic flaw detector unit is used for non-contact testing of the test material. Its mechanical structure features an open design, with internal water-contact metal parts made of austenitic stainless steel. Components utilize a quick-release design for replacing guide sleeves and water-retaining rings. The unit includes a water supply pipe, a phased array probe, a guide sleeve, a rotating water chamber, a rubber seal, a water collection tray, and a drain hole. The rotating water chamber has circumferentially distributed water nozzles. During flaw detection, the ultrasonic flaw detector unit uses a dynamic water chamber for coupling. The water supply pipe tangentially injects coupling water into the rotating water chamber to form a stable dynamic water chamber. The guide sleeve stabilizes the dynamic water chamber and retains water, while also guiding and positioning the test material. After the test material enters, the coupling water fills the gap between the rotating water chamber and the surface, ensuring stable ultrasonic coupling and shortening the detection blind zone at the end. The high-speed dynamic water circulation inside the device prevents air bubbles from interfering with the detection signal upon entry, while simultaneously rinsing the surface of the phased array probe to remove impurities and prevent deposition, thus ensuring detection performance. After the water supply to the device stops, the rotating water chamber discharges the remaining coupling water, freeing the phased array probe from prolonged immersion and extending its service life.

[0025] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An ultrasonic flaw detection coupled with water recycling and treatment system, characterized in that, Includes a water collection sedimentation tank, a booster pump, a paper tape filter, a stainless steel water tank, a water supply pump, a bag filter, and an ultrasonic flaw detector; The sedimentation tank is connected to the inlet of the booster pump; The outlet of the booster pump is connected to the top of the stainless steel water tank via a pipeline, and a paper tape filter is installed on the top of the stainless steel water tank. The paper tape filter is connected to the water inlet area inside the stainless steel water tank; The water intake area inside the stainless steel water tank is connected to the inlet of the water supply pump via a pipeline. The outlet of the water supply pump is connected to a bag filter; The bag filter is connected to the water inlet pipe of the ultrasonic flaw detector; The drainage hole at the bottom of the ultrasonic flaw detector is connected to the water collection and sedimentation tank.

2. The ultrasonic flaw detection coupled water recycling and treatment system according to claim 1, characterized in that, The water collection sedimentation tank is vertically partitioned inside, which divides the internal space of the water collection sedimentation tank into a sedimentation area and a water suction area for the booster pump. A stainless steel filter screen is installed at the top of the partition wall; The drainage hole at the bottom of the ultrasonic flaw detector is connected to the sedimentation area; The suction area of ​​the booster pump is connected to the inlet end of the booster pump; A high-level overflow port is installed on the side wall of the suction zone of the booster pump, and an overflow pipe is connected to the high-level overflow port.

3. The ultrasonic flaw detection coupled water recycling and treatment system according to claim 1, characterized in that, The stainless steel water tank has a partition in the middle, which divides the internal space of the stainless steel water tank into a water inlet area and a water absorption area. The upper part of the partition is equipped with a stainless steel filter screen; The water intake area is equipped with a high-level water overflow port, which is connected to an overflow pipe that leads to the water intake area of ​​the booster pump in the water collection and sedimentation tank.

4. The ultrasonic flaw detection coupled water recycling and treatment system according to claim 3, characterized in that, The stainless steel water tank is connected to a fresh water supply pipeline above the water absorption area, and a shut-off valve is installed on the fresh water supply pipeline. The stainless steel water tank is equipped with an anti-foaming device inside the water absorption area, which is installed at the inlet of the water supply pump's suction pipe.

5. The ultrasonic flaw detection coupled water recycling and treatment system according to claim 1, characterized in that, The paper tape filter is equipped with a transmission mechanism, which includes a chain and a wire mesh. Filter cloth is laid on the chain and wire mesh; The paper tape filter is equipped with a water flow buffer device, a liquid level controller and a speed reducer.

6. The ultrasonic flaw detection coupled water recycling and treatment system according to claim 1, characterized in that, The ultrasonic flaw detector is equipped with a control valve at the front end of the water inlet pipe. The control valve includes a pressure gauge and an electric control valve. The ultrasonic flaw detection coupled water recycling and treatment system is equipped with an electrical control system. Both the booster pump and the water supply pump are driven by variable frequency motors.

7. The ultrasonic flaw detection coupled water recycling and treatment system according to claim 1, characterized in that, The bag filter has a filter bag inside; The filter bags can be either rigid ring filter bags or fully welded hot melt filter bags; The filter bags are made of pure polypropylene, polyester, wool, viscose fiber, polyaramid, or polytetrafluoroethylene. Bag filters are equipped with sealing rings.

8. The ultrasonic flaw detection coupled water recycling and treatment system according to claim 1, characterized in that, The ultrasonic flaw detection host includes a water supply pipe, a phased array probe, a guide sleeve, a rotating water cavity, a rubber seal, and a water collection tray; The bottom of the ultrasonic flaw detector is equipped with a water collection tray, and the drain hole is located on the water collection tray.

9. The ultrasonic flaw detection coupled water recycling and treatment system according to claim 8, characterized in that, The rotating water chamber is equipped with a water spray nozzle inside its cavity; The water nozzles are distributed circumferentially along the rotating water cavity. The water supply pipe injects coupling water at a tangential position inside the rotating water chamber.

10. The ultrasonic flaw detection coupled water recycling and treatment system according to claim 1, characterized in that, The front end of the ultrasonic flaw detector is equipped with an air-water descaling device.

Images