A pressure pipe maintenance tool

Abstract

A kind of pressure pipeline overhaul tool, including the screw sleeve connected in the pressureless side of check valve, screw sleeve one end fixedly connected top cover, top cover is set with threaded hole, threaded hole is threadedly connected with top rod, multiple discharge holes are set in screw sleeve.The utility model is used to solve the problems of high risk of traditional pressure relief mode, uncontrolled pressure drop noise recovery and difficult remote operation when check valve is overhauled.

Description

Technical Field

[0001] This utility model belongs to the field of pressure pipeline inspection tools, and relates to a pressure pipeline maintenance tool. Background Technology

[0002] In industrial production systems, pressure pipelines, as core components for media transportation, are generally equipped with check valves to achieve unidirectional flow control. Typical application scenarios include air compressor outlet pipelines, steam transmission pipelines, and compressed gas storage tank connection pipelines. Their core function is to prevent reverse flow of the medium when the system stops or pressure fluctuates, thus avoiding pipeline depressurization, equipment damage, or process interruption.

[0003] When a check valve needs maintenance due to faults such as valve core jamming, seal wear, or impurity blockage, the pipelines on both sides of the check valve must be depressurized first to eliminate the risk of operating under pressure. Currently, the mainstream depressurization maintenance methods in the industry have significant safety hazards and operational defects, specifically manifested in the following two categories: 1. Nut loosening depressurization method: The operator slowly loosens the flange nut at the connection end between the check valve and the system using a wrench, releasing the pressure trapped in the pipeline through the nut gap. The problem with this method is that during the nut loosening process, the pressure in the pipeline will suddenly release as the gap increases. High-pressure media (such as compressed air or high-temperature steam) may push the check valve body or connecting bolts out at high speed, causing personnel impact injuries; at the same time, the media spraying process can easily carry impurities from the pipeline, forming a "gas cutting" or "liquid hammer" effect, damaging surrounding equipment or burning operators. 2. Valve core prying depressurization method: Using tools such as screwdrivers and pry bars, the valve core is forcibly pried open at the unpressurized side of the check valve to break the seal and release the pressure. The risks of this method are as follows: the contact between the tool and the valve core is a "point contact", which is prone to slippage, causing the tool to fly away and resulting in hand cuts or eye impact injuries; in addition, the valve core prying range cannot be precisely controlled, which may cause a sudden drop in pressure, triggering pipeline vibration or medium turbulence, damaging pipeline welding points or valve sealing structures, and aggravating equipment damage.

[0004] Furthermore, both of the above methods lack "controllability" and "safety" design for the pressure relief process: there are no noise control measures, and the 80-120dB noise generated by the high-pressure medium injection will seriously pollute the operating environment, and long-term exposure can easily lead to hearing damage to operators; there is no medium recovery mechanism, and if the medium in the pipeline is oil-containing compressed air, corrosive liquid, etc., direct discharge will cause environmental pollution and does not meet industrial environmental protection requirements; and the operation depends on manual close-range operation, and under dangerous conditions such as high pressure, toxicity, and high temperature, the safety risks faced by operators increase exponentially. Utility Model Content

[0005] The purpose of this utility model is to provide a pressure pipeline maintenance tool to solve the problems of high risk, lack of pressure control, noise reduction and recovery, and difficulty in remote operation of traditional pressure relief methods when maintaining check valves.

[0006] To solve the above problems, the technical solution of this utility model is as follows: A pressure pipeline maintenance tool includes a threaded sleeve connected to the unpressurized side of a check valve. One end of the threaded sleeve is fixedly connected to a top cover. The top cover has a threaded hole, and a push rod is threaded into the threaded hole. The threaded sleeve has multiple discharge holes for releasing pipeline pressure.

[0007] Furthermore, it also includes multiple spiral tubes with different outer diameters, one end of which is fixedly connected to a ring plate, and a threaded sleeve is threaded into the ring plate.

[0008] Furthermore, a screw head is provided at the top of the top rod, and a hexagonal insertion hole is provided inside the screw head.

[0009] Furthermore, multiple hand levers are fixedly connected to the top of the top rod.

[0010] Furthermore, a muffler is installed inside the exhaust port.

[0011] Furthermore, among the multiple discharge holes, a pipe fitting is installed in one of the discharge holes, and plugs are installed in the other discharge holes. The pipe fitting is connected to the water tank via a flexible hose.

[0012] Furthermore, a valve is installed on the hose.

[0013] Furthermore, a bracket is fixedly connected to the top cover, and a geared motor is installed on the bracket. A directional insertion hole is opened on the top surface of the top rod, and an insertion rod is installed in the insertion hole. The upper end of the insertion rod is connected to the output shaft of the geared motor. The geared motor is connected to the output end of the Internet of Things module, and the Internet of Things module is wirelessly connected to the terminal.

[0014] The beneficial effects of this utility model are as follows: 1. Through the closed-loop structure of "screw sleeve + top cover + push rod", the pressureless side of the check valve is completely wrapped. During the process of the push rod slowly pushing the valve core, the medium can only be released through the pre-set discharge hole of the screw sleeve, avoiding the check valve body and tools from flying out due to pressure impact, thus eliminating personnel impact and medium spray injury from the structural level.

[0015] 2. The threaded engagement between the push rod and the top cover forms a "deceleration and propulsion" mechanism. Operators can precisely adjust the valve core displacement by controlling the rotation speed of the push rod, so that the pipeline pressure can be smoothly reduced from the working pressure to the normal pressure, avoiding secondary damage such as pipeline vibration and weld cracking caused by sudden pressure drop.

[0016] 3. It does not rely on the operator's experience and judgment (such as "controlling the degree of nut loosening by feel" in the traditional method). Pressure relief can be completed simply by rotating the top rod, which reduces the skill level required of the operator and reduces human error.

[0017] 4. Through wireless communication between the IoT module and the terminal, operators can remotely control the start, stop and speed of the geared motor without close contact with maintenance points, completely avoiding personal safety risks caused by high pressure, toxic and high temperature media, which is especially suitable for dangerous industries such as chemical and oil and gas. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings: Figure 1 This is a cross-sectional structural diagram of the present invention. Figure 2 This is a cross-sectional structural diagram of the present invention. Figure 3 This is a cross-sectional structural diagram of the present invention.

[0019] In the diagram: 1. Check valve; 2. Screw; 3. Screw sleeve; 4. Silencer; 5. Hand lever; 6. Screw head; 7. Top cover; 8. Top rod; 9. Valve; 10. Hose; 11. Pipe fitting; 12. Plug; 13. Water tank; 14. Coupling; 15. Gear motor; 16. IoT module; 17. Insert rod; 18. Terminal; 19. Bracket; 20. Ring plate. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] like Figure 1 As shown, a pressure pipeline maintenance tool includes a threaded sleeve 3 connected to the unpressurized side of a check valve 1. One end of the threaded sleeve 3 is fixedly connected to a top cover 7, which has a threaded hole. A push rod 8 is threaded into the threaded hole. Multiple vent holes for releasing pipeline pressure are provided on the threaded sleeve 3. Rotating the push rod 8, the threaded drive slowly advances the push rod 8 axially. After the front end of the push rod 8 contacts the valve core of the check valve 1, it gradually pushes the valve core to move, breaking the sealing state of the check valve 1. This avoids the risk of tools being blown away due to sudden pressure release, as is common in traditional methods of "loosening nuts" or "using a screwdriver to pry the valve core," thus structurally eliminating the risk of personal injury.

[0022] Furthermore, it also includes multiple threaded tubes 2 with different outer diameters. One end of each threaded tube 2 is fixedly connected to an annular plate 20, and a threaded sleeve 3 is threaded into the annular plate 20. In use, according to the pipe diameter of the unpressurized side of the check valve 1 to be repaired, select a threaded tube 2 with an outer diameter matching the pipe diameter (the outer diameter of the threaded tube 2 varies with the pipe diameter of the check valve 1). There is no need to design separate tools for check valves 1 with different pipe diameters. By simply replacing the threaded tube 2, multiple specifications can be adapted, reducing tool procurement costs and inventory pressure.

[0023] Furthermore, a screw head 6 is provided at the top of the push rod 8, and a hexagonal insertion hole is provided inside the screw head 6. The hexagonal insertion hole, when used with a wrench, prevents slippage during operation, making it easier for the operator to control the rotational torque and further precisely adjust the pushing speed of the push rod 8.

[0024] Furthermore, multiple levers 5 are fixedly connected to the top of the push rod 8. This eliminates the need to carry additional wrenches or other driving tools, making it suitable for emergency repairs or scenarios where carrying tools is inconvenient, thus improving repair response speed.

[0025] Furthermore, a silencer 4 is installed inside the discharge port. When compressed air (or other media) in the system is discharged through the discharge port, the silencer 4 buffers and diverts the airflow, reducing the noise generated by the airflow impact.

[0026] like Figure 2 As shown, furthermore, among the multiple discharge holes, a pipe connector 11 is installed in one of the discharge holes, and plugs 12 are installed in the other discharge holes. The pipe connector 11 is connected to a water tank 13 via a flexible hose 10. The medium (such as condensate from compressed air or other liquid media) flows into the water tank 13 along the flexible hose 10 for centralized collection. This reduces the dripping and splashing of media at the maintenance site, keeps the site clean, and reduces the risk of slipping, equipment corrosion, etc., caused by media leakage.

[0027] Furthermore, a valve 9 is installed on the hose 10. If any abnormality occurs during maintenance (such as impurities in the medium clogging the hose 10), the valve 9 can be quickly closed to cut off the medium passage, facilitating troubleshooting.

[0028] like Figure 3As shown, a bracket 19 is fixedly connected to the top cover 7, and a geared motor 15 is mounted on the bracket 19. A directional insertion hole is opened on the top surface of the top rod 8, and an insertion rod 17 is installed in the insertion hole. The upper end of the insertion rod 17 is connected to the output shaft of the geared motor 15 through a coupling 14. The geared motor 15 is connected to the output terminal of an Internet of Things (IoT) module 16 (e.g., Nordic NRF9160). The IoT module 16 communicates with a terminal 18 (e.g., mobile phone, computer) via wireless signals (e.g., 4G, WiFi). The operator can send commands (e.g., "forward rotation", "reverse rotation", "stop") on the terminal 18 to control the start and stop of the geared motor 15. The operator can control the tool in a safe area away from the maintenance point (e.g., control room), completely avoiding the risks of media splashing and tool falling off during pressure release, which is especially suitable for pipeline maintenance of high-pressure and toxic media.

[0029] The embodiments described in this specification are merely examples of implementations of the inventive concept. The scope of protection of this utility model should not be considered as limited to the specific forms described in the embodiments. The scope of protection of this utility model also extends to equivalent technical means that can be conceived by those skilled in the art based on the inventive concept.

Claims

1. A pressure pipeline maintenance tool, characterized in that: Includes a threaded sleeve (3) connected to the pressureless side of the check valve (1), one end of the threaded sleeve (3) is fixedly connected to the top cover (7), the top cover (7) has a threaded hole, the threaded hole is threaded with a push rod (8), and the threaded sleeve (3) has multiple discharge holes for releasing pipeline pressure.

2. The pressure pipeline maintenance tool according to claim 1, characterized in that: It also includes multiple spiral tubes (2) with different outer diameters. One end of the spiral tube (2) is fixedly connected to a ring plate (20), and the screw sleeve (3) is threadedly connected inside the ring plate (20).

3. A pressure pipeline maintenance tool according to claim 1 or 2, characterized in that: A screw head (6) is provided at the top of the top rod (8), and a hexagonal insertion hole is provided inside the screw head (6).

4. A pressure pipeline maintenance tool according to claim 1 or 2, characterized in that: Multiple hand levers (5) are fixedly connected to the top of the top rod (8).

5. A pressure pipeline maintenance tool according to claim 1 or 2, characterized in that: A silencer (4) is installed inside the discharge port.

6. A pressure pipeline maintenance tool according to claim 1 or 2, characterized in that: Among the multiple discharge holes, a pipe fitting (11) is installed in one of the discharge holes, and plugs (12) are installed in the other discharge holes. The pipe fitting (11) is connected to the water tank (13) through a hose (10).

7. A pressure pipeline maintenance tool according to claim 6, characterized in that: A valve (9) is installed on the hose (10).

8. A pressure pipeline maintenance tool according to claim 1 or 2, characterized in that: A bracket (19) is fixedly connected to the top cover (7). A geared motor (15) is installed on the bracket (19). A directional insertion hole is opened on the top surface of the top rod (8). A plug rod (17) is installed in the insertion hole. The upper end of the plug rod (17) is connected to the output shaft of the geared motor (15). The geared motor (15) is connected to the output end of the Internet of Things module (16). The Internet of Things module (16) is wirelessly connected to the terminal (18).

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