A corrosion probe device which can be disassembled under pressure

Abstract

This utility model discloses a corrosion probe device that can be disassembled under pressure, belonging to the field of corrosion monitoring technology. It includes a pick-and-place device and a base. One end of the pick-and-place device is connected to a test piece hanging rod that extends through a flange extension pipe into the oil and gas pipeline. A test piece is fixed to the end of the test piece hanging rod away from the stopcock. A stopcock that screws into the base is fixed to the end of the test piece hanging rod. The end of the base is fixed to a base flange that is bolted to the base flange of the natural gas pipeline base. A base connecting oil collar is fixed to the end of the base away from the base flange. A servo ball valve connecting flange is fixed to the end of the base connecting oil collar away from the base. The end of the base is fixed to a servo single ball valve via the servo ball valve connecting flange. It allows for 360-degree pressure corrosion monitoring without stopping work, production, or process switching, and features safe and simple operation. A positioning component clamps and locks the handwheel, ensuring adjustment accuracy and monitoring stability.

Description

Technical Field

[0001] This utility model relates to the field of corrosion monitoring technology, and in particular to a corrosion probe device that can be disassembled under pressure. Background Technology

[0002] Corrosion not only causes significant economic losses but also poses a potential hazard to many accidents. As corrosion and protection issues receive increasing attention, corrosion monitoring has developed rapidly (corrosion monitoring is the "doctor" for effective protection). Although corrosion monitoring technology has a history of nearly 60 years, people's understanding of its role has been gradually improving, and it has been well applied and developed in recent years. Simultaneously, the performance and structure of corrosion monitoring technology and equipment have also advanced rapidly, especially the performance of pressurized handling equipment, which has been greatly improved, making operation safer and simpler.

[0003] For example, Chinese Patent Publication No. CN207248822U discloses a device for picking up and placing corrosion-resistant plates and resistance probes, which includes a cylindrical seal. One end of the cylindrical seal is sealed, and the other end has a connection structure for sealing connection with a conveying pipeline. A rotating sleeve is installed on the sealed end of the cylindrical seal. The rotating sleeve is axially fixed and circumferentially rotated on the cylindrical seal and is sealed with the cylindrical seal. A picking and placing screw is fitted on the rotating sleeve. The lower end of the picking and placing screw has a threaded section for threaded connection with the corrosion-resistant plates and resistance probes. In use, one end of the cylindrical seal is connected to the conveying pipeline, and the picking and placing screw is rotated to move downwards until it is tightened with the corrosion-resistant plates and resistance probes. Rotating the rotating sleeve causes the picking and placing screw, along with the corrosion-resistant plates and resistance probes, to move upwards, thereby removing the corrosion-resistant plates and resistance probes.

[0004] However, when the device is in use, the lead screw handwheel lacks positioning when not in use. When the handwheel is accidentally touched by external force, it is easy to cause the handwheel to deflect incorrectly, affecting the adjustment accuracy and monitoring stability. At the same time, when the device is in use, it is not convenient to install and disassemble the corrosion detection components under pressure, which affects the ease of use.

[0005] Therefore, it is necessary to provide a corrosion probe device that can be disassembled under pressure to solve the above-mentioned technical problems. Utility Model Content

[0006] The purpose of this invention is to provide a corrosion probe device that can be disassembled under pressure, so as to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following solution to the aforementioned technical problems: A corrosion probe device capable of being disassembled under pressure, comprising a pick-and-place device and a base. One end of the pick-and-place device is connected to a servo single-ball valve, and a handwheel is connected to the end of the pick-and-place device away from the servo single-ball valve. A positioning component is provided on one side of the handwheel. An oil and gas pipeline is provided on one side of the base. A flange extension pipe communicating with the interior of the oil and gas pipeline is fixed to the side of the oil and gas pipeline. A natural gas pipeline base flange is fixed to the end of the flange extension pipe away from the oil and gas pipeline. A through-hole device is connected to one end of the pick-and-place device. A test piece hanger extends into the oil and gas pipeline via a flange extension pipe. A test piece fastening bolt is installed at the end of the hanger away from the stopcock, and a test piece is fixed to it via the bolt. A stopcock screwed into a base is fixed to the end of the hanger. A base flange, bolted to the natural gas pipeline base flange, is fixed to the end of the base. A base connecting oil collar is fixed to the end of the base away from the base flange. A servo ball valve connecting flange is fixed to the end of the base connecting oil collar away from the base. The end of the base is fixed to a servo single ball valve via the servo ball valve connecting flange.

[0008] As a further embodiment of this utility model, the servo single ball valve includes a ball valve body fixed to the servo ball valve connecting flange, a ball valve is provided inside the ball valve body, a ball valve switch operating lever for controlling the ball valve is provided outside the ball valve body, a pressure relief needle valve for relieving pressure inside the ball valve body is provided on the ball valve body, and a pick-and-place connection thread for threaded connection with a pick-and-place device is provided on the port of the ball valve body.

[0009] As a further embodiment of this utility model, a sealing ring is provided on the port where the ball valve body is threadedly connected to the pick-and-place device.

[0010] As a further embodiment of this utility model, the positioning component includes a clamp fixed to the side of the pick-and-place device, a nut sleeve fixed inside the top side wall of the clamp, a threaded rod threadedly connected inside the nut sleeve, a clamping plate fixed to one end of the threaded rod inside the clamp, and an end plate fixed to one end of the threaded rod outside the clamp.

[0011] As a further embodiment of this utility model, a rubber pad a is attached and fixed to the side of the clamping plate away from the threaded rod, and the area of ​​the rubber pad a is equal to the area of ​​the side of the clamping plate.

[0012] As a further embodiment of this utility model, a rubber pad b is attached and fixed to the side of the clamp that is opposite to the clamping plate inside the clamping seat.

[0013] As a further embodiment of this utility model, the side of the end plate is provided with protruding ribs, and the protruding ribs are provided in multiple ways and are distributed in a ring.

[0014] As a further embodiment of this utility model, a grip is fixed on the side of the handwheel, and a rubber sleeve is fitted onto the surface of the grip.

[0015] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model's high-pressure corrosion monitoring live-line pick-and-place device can be widely used in 360-degree live corrosion monitoring operations for various pipelines and containers in petroleum, chemical, and water treatment industries. It does not require work stoppages, production shutdowns, or process switching, and features safe and simple operation. The handwheel-driven side lifting and lowering operation avoids overlap between the operator and the pressure transmission direction, greatly improving safety performance. It can also be operated by one person, which is very convenient. Secondly, it is fully compatible with corrosion detection devices from various manufacturers, with good versatility. 2. After the handwheel is adjusted, rotate the end plate to turn the threaded rod downwards. The threaded rod drives the clamping plate to clamp the handwheel in part, thereby locking the handwheel and preventing accidental deflection of the handwheel due to external force. This ensures the accuracy of handwheel adjustment and the stability of monitoring work. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a three-dimensional view of the internal structure of the servo single ball valve of this utility model; Figure 2 This is a schematic diagram of the overall structure of this utility model; Figure 3 This is a partial structural diagram of the grip bar of this utility model; Figure 4 This is a schematic diagram of the positioning component structure of this utility model.

[0017] The attached diagram lists the components represented by each number as follows: 01. Sealing ring; 1. Threaded connection of pick-and-place device; 2. Pressure relief needle valve; 3. Ball valve; 4. Ball valve body; 5. Servo ball valve connecting flange; 6. Oil collar connecting base; 7. Plug; 8. Base; 9. Base flange; 10. Natural gas pipeline base flange; 11. Flange extension pipe; 12. Specimen hanging rod; 13. Oil and gas pipeline; 14. Ball valve switch operating lever; 15. Specimen fastening bolt; 16. Pick-and-place device; 17. Pressure gauge; 18. Handwheel; 19. Hand lever; 20. Servo single ball valve; 22. Positioning assembly; 221. Clamp; 222. Threaded rod; 223. End plate; 224. Nut sleeve; 225. Clamping plate; 226. Rubber pad a; 227. Rubber pad b; 228. Rib; 23. Rubber sleeve. Detailed Implementation

[0018] The present invention will be further described below with reference to the embodiments.

[0019] Please see Figure 1-4 This utility model provides a corrosion probe device that can be disassembled under pressure, including a pick-and-place device 16 and a base 8. One end of the pick-and-place device 16 is connected to a servo single ball valve 20, and a handwheel 18 is connected to the end of the pick-and-place device 16 away from the servo single ball valve 20. A positioning component 22 is provided on one side of the handwheel 18. An oil and gas pipeline 13 is provided on one side of the base 8. A flange extension pipe 11 communicating with the inside of the oil and gas pipeline 13 is fixed to the side of the oil and gas pipeline 13. A natural gas pipeline base flange 10 is fixed to the end of the flange extension pipe 11 away from the oil and gas pipeline 13. A test piece hanging rod 12 that passes through the flange extension pipe 11 and extends into the oil and gas pipeline 13 is connected to one end of the pick-and-place device 16. A test piece fastening bolt 15 is provided at the end of the test piece hanging rod 12 away from the stopcock 7, and a test piece is fixed by the test piece fastening bolt 15. A screw-in end of the test piece hanging rod 12 is fixed to the end of the base 8. The base 8 has a base flange 9 fixed at its end, which is bolted to the base flange 10 of the natural gas pipeline. A base connecting oil ring 6 is fixed at the end of the base 8 away from the base flange 9. A servo ball valve connecting flange 5 is fixed at the end of the base connecting oil ring 6 away from the base 8. The end of the base 8 is fixed to the servo single ball valve 20 through the servo ball valve connecting flange 5. The servo single ball valve 20 includes a ball valve body 4 fixed to the servo ball valve connecting flange 5. A ball valve 3 is provided inside the ball valve body 4. A ball valve switch operating lever 14 for controlling the ball valve 3 is provided outside the ball valve body 4. A pressure relief needle valve 2 for relieving pressure inside the ball valve body 4 is provided on the ball valve body 4. A pick-and-place connection thread 1 is provided on the port of the ball valve body 4, which is threaded to the pick-and-place device 16. A sealing ring 01 is provided on the port of the ball valve body 4 where the pick-and-place device 16 is threaded.

[0020] Operation process of servo single ball valve: The "servo single ball valve" (hereinafter referred to as "single ball valve") is a key component used in conjunction with the pick-and-place device. Its operating procedure is as follows: Step 1: Open the protective cap of the base and first check whether the O-ring seal at the end of the base is intact. Check if the base sealing groove is clean. Next, clean the attachments and debris on the base threads and the end of the plug (7), as well as the debris on the site, to prepare for the installation of the single ball valve. Step 2: Open the toolbox, take out the single ball valve, and check the trapezoidal thread of the base connection oil ring (6). Check for any broken metal pins. Also check if the screws on the servo ball valve connecting flange (5) are loose. Next, manually twist the base connecting oil ring (6) in both directions to confirm that it rotates flexibly. Step 3: Gently place the single ball valve on the base, keeping the center of the single ball valve and the base basically aligned. Rotate the base connecting oil ring counterclockwise several times to automatically align it with the thread of the base (8). Then rotate the base connecting oil ring (6) clockwise. After confirming that it is connected to the thread of the base (8), quickly rotate the base connecting oil ring (6) until it cannot be turned by hand. Then use a brass hammer to tap the base connecting oil ring clockwise to tighten it. Be careful not to use too much force to avoid damaging the O-ring seal at the end of the base or reducing its service life. Step 4: Before removing the stopcock (7), check that the ball valve operating lever is in the open position and that the pressure relief needle valve (2) is in the closed position. Step 5: Check the valve trapezoidal thread (1) for damage or metal fragments. If there is obvious damage... It should be repaired and removed; Step 6: Check if the O-ring on the top of the valve is intact. If there is any defect, replace it immediately. Also check if there is any debris in the sealing groove and clean it, otherwise it will definitely affect the sealing effect. Step 7: After confirming that there are no problems above, you can connect it to the pick-and-place device.

[0021] Operating Procedures for Pressurized Pick-and-Pick (a) Removing the plug 1. Rotate the auger handle clockwise to move the adapter to the top of stopcock 7 (touch lightly, do not twist forcefully); 2. Rotate the straight groove cylinder handle clockwise (4-5 turns), while simultaneously rotating the spiral cylinder handle clockwise (very slowly, do not force it); 3. Apply more force and rotate the screw cylinder handle clockwise by about 90° to align the hexagonal parts. During this process, you can slightly rotate the straight groove cylinder handle to align the hexagonal parts. When the straight groove cylinder handle can no longer be rotated, it proves that the hexagonal parts are properly aligned. 4. Apply force clockwise to the screw drum handle to prevent the hexagonal valve from disengaging; simultaneously, slowly rotate the straight groove drum handle counterclockwise 1-2 turns and wait for the system to depressurize. After the pressure stabilizes, continue rotating the straight groove drum handle, turning the stopcock 7 more than 14 turns to ensure that the threads of the stopcock 7 disengage. 5. Rotate the spiral groove handle counterclockwise to retract the plug 7 into the take-up device 16. If the handle can only rotate about 90°, it means that the screw thread of the plug 7 has not completely disengaged, and steps 3-4 above need to be repeated. 6. Slowly close the maintenance valve; 7. Release the internal pressure of the pick-and-place device 16 and remove the pick-and-place device 16; 8. Rotate the screw cylinder handle clockwise to remove stopcock 7.

[0022] (ii) Install the plug 1. Install the stopcock 7 onto the pick-and-place device 16 and screw it in 4-5 turns; 2. Close the pressure relief valve on the pick-and-place device 16, slowly open the pressure relief valve of the maintenance valve, and after the pressure is balanced, slowly open the maintenance valve; 3. Rotate the spiral groove handle clockwise until the stopcock 7 is engaged with the valve seat; 4. While maintaining the rotational force on the spiral groove handle, simultaneously rotate the straight sewing cylinder handle clockwise to engage stopcock 7 (approximately 14 turns); 5. Rotate the spiral groove handle counterclockwise approximately 90° to disengage the hexagonal mechanism. Rotate the straight groove cylinder handle counterclockwise more than 5 turns. If the straight groove cylinder experiences significant rotational resistance, rotate the spiral groove handle counterclockwise. 6. Rotate the spiral groove handle counterclockwise to open the pressure relief valve and release pressure.

[0023] Operating Procedures for Removing and Retrieving the Device (I) After installing the base plug, the next step is to check the sealing effect of plug 7. First, observe and record the pressure gauge reading before depressurization. Then, slowly open the pressure relief needle valve 2 on the single ball valve 20 to release some pressure on the pressure gauge. Immediately close the pressure relief needle valve 2 and observe the pressure gauge for about five minutes. If the pressure gauge reading remains stable or decreases, it indicates that plug 7 is well sealed and there is no leakage. The second method is: with all the drain needle valves under pressure, open the drain valve and observe that the pressure gauge reading is zero. Do not close the drain valve; let it continue to drain. After two minutes, apply soapy water to the drain valve port and observe whether there are bubbles. If no bubbles appear, it indicates that plug 7 is well sealed and there is no leakage. The next step of disassembly can be carried out. If there is a slight leak, tighten the plug with the drive ring handle, with a torque not exceeding 10 kg.

[0024] (ii) Disconnect the adapter from the stopcock. 1. After confirming that the plug seal is properly installed, vent the pressure gauge to zero, close all drain valves again, and restore the installation state (the purpose is to observe the adapter to prevent the plug from retracting and leaking when it is disengaged).

[0025] 2. Turn the handwheel counterclockwise 1 / 4 turn. The splined shaft will move the adapter upwards by approximately 17 mm, allowing the adapter to... Disengage the hexagonal sleeve from the hexagonal nut on the stopcock, then turn the drive ring handle counterclockwise about 7 turns. The adapter connector will then disengage from the stopcock (turning it a few more times is fine). A key indicator of successful disengagement is that turning the handwheel counterclockwise and lifting the splined shaft is very easy. If the splined shaft cannot be lifted, the adapter and stopcock are not separated. Continue turning the drive ring handle counterclockwise. After the adapter and stopcock are separated, check the pressure gauge for pressure readings. If the pressure reading is zero, the adapter and stopcock have successfully separated; if there is pressure reading, separation has failed.

[0026] (iii) Remove the pick-and-place device from the servo single ball valve Step 1: After confirming that the adapter and the stopcock have been successfully separated, turn the handwheel counterclockwise about 3.6 turns to lift the adapter and spline shaft into the lower housing sleeve section above the oil collar. Step 2: Open the drain valve to release the gas (or liquid phase) in the feeder chamber, and close the servo single ball valve so that its valve core is in the closed and locked position. Step 3: Use a sparkless hammer to tap the oil cap counterclockwise to loosen it. At least two operators are required at this stage: one to hold the pick-and-place device upright, and the other to rotate the oil cap until it is completely disengaged from the trapezoidal thread of the servo single-ball valve. Two or three people should work together to lift the pick-and-place device upwards, ensuring the oil cap does not collide with the threads of the servo single-ball valve. Then, slowly lower the pick-and-place device onto the prepared area. The fulcrum should be: one end is the oil cap, and the other end is the gearbox. The upper housing sleeve should not be subjected to stress. Note: If there is a next work point, do not remove the upper housing sleeve. Step 4: Remove the upper housing sleeve; First, unscrew the upper housing sleeve's fastening screw by 1 / 2, then use a 55-62mm hook wrench to clamp the hole in the upper housing and rotate it counterclockwise to remove it, then place it in the corresponding position in the toolbox. Next, remove the lever from the drive ring and place it in the tool bag; Step 5: Adjust the position of the spline shaft in the lower housing sleeve, turn the lifting handwheel to retract the adapter into the tube opening, and then put it into the toolbox in sequence.

[0027] (iv) Removal of the servo single ball valve After loosening the base connecting oil ring by tapping it counterclockwise with a sparkless hammer, rotate the connecting oil ring by hand until it is completely removed from the base thread. Store it in the toolbox, and finally screw the base cap on the base to finish tightening.

[0028] Further as Figure 2 , Figure 3 and Figure 4 As shown, it is worth noting that the positioning component 22 includes a clamp 221 fixed to the side of the pick-and-place device 16. A nut sleeve 224 is fixed inside the top side wall of the clamp 221. A threaded rod 222 is threadedly connected to the nut sleeve 224. A clamping plate 225 is fixed to one end of the threaded rod 222 inside the clamp 221, and an end plate 223 is fixed to the other end of the threaded rod 222 outside the clamp 221. After the handwheel 18 is adjusted, the threaded rod 222 is rotated by rotating the end plate 223. The threaded rod 222 drives the clamping plate 225 to clamp a part of the handwheel 18, thereby locking the handwheel 18 and preventing the handwheel 18 from being accidentally deflected due to external force. This ensures the accuracy of the handwheel 18 adjustment and the stability of the monitoring operation.

[0029] Further as Figure 4 As shown, it is worth noting that a rubber pad a226 is attached and fixed to the side of the clamping plate 225 away from the threaded rod 222. The area of ​​the rubber pad a226 is equal to the area of ​​the side of the clamping plate 225. In actual operation, the rubber pads a226 and b227 effectively increase the clamping friction of the clamping plate 225 on the handwheel 18, thereby improving the locking stability.

[0030] Further as Figure 4 As shown, it is worth noting that a rubber pad b227 is fixedly attached to the side of the clamp 221 that is opposite to the clamp 225.

[0031] Further as Figure 4 As shown, it is worth noting that the end plate 223 has multiple raised ribs 228 on its side, which are arranged in a ring. In actual operation, the multiple raised ribs 228 increase the friction when the end plate 223 is rotated by hand, thus preventing slippage.

[0032] Further as Figure 1 , Figure 2 and Figure 3 As shown, it is worth noting that a handle 19 is fixed on the side of the handwheel 18, and a rubber sleeve 23 is fitted onto the surface of the handle 19. In actual operation, the handwheel 18 is rotated and adjusted by holding the handle 19, which improves the ease of operation.

Claims

1. A corrosion probe device capable of being disassembled under pressure, comprising a pick-and-place device and a base, characterized in that, One end of the pick-and-place device is connected to a servo single-ball valve. A handwheel is connected to the end of the pick-and-place device away from the servo single-ball valve. A positioning component is provided on one side of the handwheel. An oil and gas pipeline is provided on one side of the base. A flange extension pipe communicating with the interior of the oil and gas pipeline is fixed to the side of the oil and gas pipeline. A natural gas pipeline base flange is fixed to the end of the flange extension pipe away from the oil and gas pipeline. A test piece hanging rod, which passes through the flange extension pipe and extends into the oil and gas pipeline, is connected to one end of the pick-and-place device. The end of the rod away from the stopcock is provided with a test piece fastening bolt, and a test piece is fixed by the test piece fastening bolt. A stopcock that screws into the base is fixed to the end of the test piece hanging rod. A base flange that is bolted to the end of the base is fixed to the end of the base. A base connecting oil collar is fixed to the end of the base away from the base flange. A servo ball valve connecting flange is fixed to the end of the base connecting oil collar away from the base. The end of the base is fixed to the servo single ball valve through the servo ball valve connecting flange.

2. The corrosion probe device capable of being disassembled under pressure according to claim 1, characterized in that, The servo single ball valve includes a ball valve body fixed to the servo ball valve connecting flange. A ball valve is provided inside the ball valve body. A ball valve switch operating lever for controlling the ball valve is provided outside the ball valve body. A pressure relief needle valve for relieving pressure inside the ball valve body is provided on the ball valve body. A pick-and-place connection thread for threaded connection with a pick-and-place device is provided on the port of the ball valve body.

3. The corrosion probe device capable of being disassembled under pressure according to claim 2, characterized in that, A sealing ring is provided on the port where the ball valve body is threadedly connected to the pick-and-place device.

4. The corrosion probe device capable of being disassembled under pressure according to claim 1, characterized in that, The positioning assembly includes a clamp fixed to the side of the pick-and-place device. A nut sleeve is fixed inside the top side wall of the clamp. A threaded rod is threadedly connected inside the nut sleeve. A clamping plate is fixed to one end of the threaded rod inside the clamp. An end plate is fixed to one end of the threaded rod outside the clamp.

5. The corrosion probe device capable of being disassembled under pressure according to claim 4, characterized in that, A rubber pad a is fixedly attached to the side of the clamping plate away from the threaded rod, and the area of ​​the rubber pad a is equal to the area of ​​the side of the clamping plate.

6. The corrosion probe device capable of being disassembled under pressure according to claim 5, characterized in that, A rubber pad b is fixedly attached to the side of the clamp that is opposite to the clamping plate inside the clamping seat.

7. The corrosion probe device capable of being disassembled under pressure according to claim 6, characterized in that, The end plate has raised ribs on its side, and there are multiple raised ribs arranged in a ring.

8. The corrosion probe device capable of being disassembled under pressure according to claim 1, characterized in that, A grip is fixed to the side of the handwheel, and a rubber sleeve is fitted onto the surface of the grip.

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