Safety valve rapid lifting device

Abstract

This invention provides a rapid lifting device for safety valves. The device includes a lifting frame, a power unit, a safety valve fork, a lifting rod, and a lifting hook. The power unit is fixed to the lifting frame, and the lifting hook is connected to a lifting rope on the power unit's electric winch, providing a lifting anchor point for the lifting frame. In use, the lifting hook is hooked onto the hook crossbar at the top of the lifting rod, and the safety valve fork is fixed below the lifting frame to lift the safety valve from the bottom. This rapid lifting device allows for safer and easier adjustment of the safety valve's lifting speed and lowering position, ensuring safe, quick, and labor-saving installation and disassembly of the safety valve, avoiding dangerous operations at heights, and enabling maintenance work to be carried out under safe conditions.

Description

Technical Field

[0001] This invention relates to the field of heavy lifting equipment technology, and in particular to a safety valve rapid lifting device. Background Technology

[0002] When replacing the safety valve in a steam injection boiler, because the safety valve is installed approximately 1.5 meters above the ground, the replacement and installation process mainly relies on manual labor to lift and lower the valve; alternatively, ropes, pulleys, winches, etc., fixed at a high location can be used for a more labor-saving lifting and lowering operation. Manual operation is time-consuming and labor-intensive, requiring multiple people to work together, and improper operation may result in the risk of the heavy object falling and injuring the operator. Current technology cannot avoid requiring operators to climb to a high point to secure the ropes, and the descent speed and hoisting position of the safety valve cannot be adjusted safely and easily, still resulting in low efficiency and the risk of falls from heights.

[0003] Chinese patent application CN201921516644.0 discloses a safety valve for water and gas injection in oil fields, comprising a valve body with an inlet, an outlet, and a valve cavity. The inlet has a valve seat with a sealing lip on its top and an adjusting ring threaded onto the valve seat. The valve body has a middle sleeve at its top with a sliding hole at its center and a pressure rod inside the sliding hole. A sliding sleeve is located at the end of the middle sleeve facing the valve cavity, and a backflow adjusting ring is screwed onto the lower outer wall of the sliding sleeve. A valve core is located inside the sliding sleeve. A sealing ring is located on the outer wall of the end of the valve core facing the valve seat, and a bowl-shaped groove is located on the annular surface of the sealing ring facing the sliding sleeve. The end of the sliding sleeve has an outer chamfer, and the annular surface of the sealing ring facing the valve seat has an outer chamfer. A contraction ring is located on the inner cylindrical wall of the backflow adjusting ring facing the valve seat.

[0004] Chinese patent application CN201910327040.X discloses a skid-mounted high-pressure plunger pump for oilfield water injection, comprising a plunger pump unit, a standby plunger pump unit, and their adapter piping and explosion-proof electrical control cabinet fixedly connected to a skid chassis. The adapter piping includes an inlet pipe and an outlet pipe. The inlet pipe is equipped with a main inlet valve, a filter, a plunger pump control valve, and a low-pressure pneumatic shut-off valve. The outlet pipes of the standby plunger pump unit and the plunger pump unit are each equipped with a high-pressure check valve. The outlet pipe is equipped with a pressure transmitter, a pressure gauge, and a first temperature transmitter. The explosion-proof electrical control cabinet is connected to the low-pressure pneumatic shut-off valve, the plunger pump unit, the standby plunger pump unit, the pressure transmitter, and the first temperature transmitter via wires.

[0005] Chinese patent application CN201210587755.7 discloses a high-pressure safety valve disassembly fixture. The valve is equipped with a clamping device including a pressure plate, a locking nut, a valve stem, a spring, and two symmetrically arranged vertical yokes. Both ends of the pressure plate pass through the yokes. The locking nut is fitted onto the yokes and abuts against the top surface of the pressure plate. The lower end of the valve stem abuts against the valve core. The spring is positioned on the valve stem between the pressure plate and the valve core. The fixture is characterized by being vertically mounted above the valve clamping device and includes a hydraulic pump, a hydraulic cylinder, and a sleeve coupling. The hydraulic cylinder is vertically placed on the pressure plate. The hydraulic pump is connected to the hydraulic cylinder inlet. The sleeve coupling passes through the central hole of the hydraulic cylinder core, its bottom is threaded to the valve stem, and its top has a shoulder structure. By placing the hydraulic cylinder directly above the clamping device, a downward force is provided, preventing the locking nut from being subjected to the force of the spring, thus allowing the locking nut to be easily loosened.

[0006] The above-mentioned existing technologies are all quite different from the present invention and have failed to solve the technical problem we want to solve. Therefore, we have invented a new safety valve rapid lifting device. Summary of the Invention

[0007] The purpose of this invention is to provide a rapid lifting device for safety valves in steam injection boilers, ensuring safe and quick maintenance and installation.

[0008] The objective of this invention can be achieved through the following technical measures: a safety valve rapid lifting device, which includes a lifting device frame, a power unit, a safety valve fork, a lifting rod, and a lifting hook. The power unit is fixed on the lifting device frame, and the lifting hook is connected to the lifting rope on the electric winch of the power unit to provide a lifting fixing point for the lifting device frame. In use, the lifting hook is hung on the hook crossbar at the top of the lifting rod, and the safety valve fork is fixed below the lifting device frame to lift the safety valve from the bottom.

[0009] The objective of this invention can also be achieved through the following technical measures:

[0010] The lifting device has a frame made of carbon steel or aluminum alloy; handrails are installed at the top and bottom.

[0011] The safety valve rapid lifting device also includes a solar panel, which is fixed to the lifting device frame and connected to the power unit to charge the power unit.

[0012] The power unit includes a control circuit board, a 24V lead-acid battery, and an electric winch. The electric winch is fixed to the lifting device frame. The 24V lead-acid battery is connected to the electric winch to provide power. The front end of the hoisting rope is connected to the hoisting hook, and the end is fixed to the electric winch. The hoisting rope passes through two fixed pulleys on the lifting device frame. The control circuit board is connected to the electric winch to control its operation.

[0013] The safety valve rapid lifting device also includes a load-bearing roller, which is installed below the lifting device frame.

[0014] The safety valve fork consists of a track and two support claws. The rear of the two support claws are installed in dovetail grooves in the track, and can slide left and right to adjust the distance between the two support claws according to the size of the safety valve. A self-locking nut is also provided for fixing after the position is adjusted.

[0015] The safety valve quick-lifting device also includes a special-shaped bottom support tool. For safety valves whose bottom is not open and are not suitable for using the safety valve fork, the special-shaped bottom support tool is used to replace the safety valve fork. The safety valve is securely fixed in the circular frame of the special-shaped bottom support tool using the self-locking strap on the tip.

[0016] The safety valve quick-lifting device also includes a valve body fixing seat, which is welded to the lifting device frame. The semi-circular fixing seat is provided with strap fixing holes, and the safety valve is fixed with straps after being placed in the semi-circular fixing seat.

[0017] The safety valve rapid lifting device also includes a lifting bracket, which adopts a 7-shaped support structure and is welded to the lifting device frame. A fixed pulley is welded to the center line of the lifting bracket to reduce resistance.

[0018] The upper part of the lifting rod is welded with a hook to fix the crossbar, and a plug is set at the end of the crossbar to prevent the lifting hook from slipping off. In order to ensure the strength of the lifting rod, the rod body can be reinforced with a three-section sleeve. The overall length of the lifting rod must meet the requirement that the lower part of the safety valve is 10-15cm away from the installation flange after the safety valve is fully lifted, so as to ensure that the sealing gasket has enough space for installation and adjustment.

[0019] The safety valve rapid lifting device also includes a lifting rod support, which is made of carbon steel and welded to the boiler channel steel. In use, the end of the lifting rod is inserted into the lifting rod support, which provides support for the lifting rod.

[0020] The safety valve rapid lifting device also includes a wireless remote control, which is wirelessly connected to the power unit to control the start, stop and speed of the power unit.

[0021] The safety valve rapid lifting device of this invention can safely and easily adjust the lifting speed and lowering position of the safety valve, ensuring that the installation and disassembly of the safety valve is safe, quick and labor-saving, avoiding dangerous operations at heights, and allowing maintenance work to be carried out under safe conditions. Attached Figure Description

[0022] Figure 1 This is a structural diagram of a specific embodiment of the safety valve rapid lifting device of the present invention;

[0023] Figure 2 This is a schematic diagram of the safety valve fork structure in a specific embodiment of the present invention;

[0024] Figure 3 This is a schematic diagram showing the installation positions of the hoisting bracket, fixed pulley, and hoisting hook in a specific embodiment of the present invention;

[0025] Figure 4 This is a schematic diagram of the hoisting rod support structure and installation method in a specific embodiment of the present invention;

[0026] Figure 5 This is a schematic diagram of the lifting device in operation according to a specific embodiment of the present invention;

[0027] Figure 6 This is a schematic diagram of the working process of the device when the bottom of the safety valve is open and suitable for the use of a fork in a specific embodiment of the present invention;

[0028] Figure 7 This is a schematic diagram illustrating the working process of the irregular bottom support tool mentioned in the safety valve fork, which is suitable for use when the bottom of the safety valve is not fully open in a specific embodiment of the present invention. Detailed Implementation

[0029] It should be noted that the following detailed descriptions are exemplary and intended to provide further illustration of the invention. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0030] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments of the present invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, and / or combinations thereof.

[0031] like Figure 1 As shown, Figure 1 This is a structural diagram of the safety valve rapid lifting device of the present invention. The safety valve rapid lifting device includes:

[0032] The lifting device frame 1 is made of carbon steel or aluminum alloy; handrails are installed at the top and bottom.

[0033] Solar panel 2 is used to charge power unit 3.

[0034] The power unit 3 mainly consists of a control circuit board, a 24V lead-acid battery, and an electric winch. The electric winch is bolted to the lifting device frame 1. The 24V lead-acid battery provides power to the electric winch. The front end of the hoisting rope is connected to the hoisting hook 11, and the end is fixed to the electric winch. The rope passes through two fixed pulleys on the lifting device frame. During operation, the electric winch's lifting and speed are controlled using a remote control 10. The lifting device frame is raised and lowered by rotating the hoisting rope.

[0035] Load-bearing wheel 4: Installed below the lifting device frame 1, the load-bearing wheel is an air-filled wheel with a load capacity of 100KG to ensure good passability in areas with poor road conditions such as steam injection well sites.

[0036] Safety valve fork 5; bolted to the bottom of the lifting device frame 1, used to lift the safety valve from the bottom; the fork consists of a rail and two support claws; the rear of the support claws is installed in a dovetail groove in the rail, and can slide left and right to adjust the spacing of the support claws according to the size of the safety valve, and is equipped with a self-locking nut for fixing after position adjustment; for safety valves that are not suitable for use with forks because the bottom is not through, the present invention also provides an irregular bottom support tool, in which the safety valve is locked in the circular frame of the bottom support tool and securely fixed with a self-locking strap on the tip.

[0037] The valve body fixing seat 6 is welded to the lifting device frame 1. The semi-circular fixing seat is provided with a strap fixing hole. After the safety valve is placed in the semi-circular fixing seat, it is fixed with a strap.

[0038] Lifting bracket 7: It adopts a “7”-shaped support structure and is welded to the lifting device frame 1. A fixed pulley is welded at the center line of the lifting bracket 7 to reduce resistance. The lifting bracket 7 is used to strengthen the structural strength and stability of the lifting device frame 1 and prevent the lifting device frame 1 from being deformed or overturned due to excessive force during the lifting of the safety valve.

[0039] The lifting boom 8 has a welded hook at the top to fix the crossbar, and a plug at the end of the crossbar to prevent the lifting hook 11 from slipping. To ensure the strength of the lifting boom, the boom body can be reinforced with a three-section sleeve. During use, the lower part is manually inserted into the lifting boom support 9, and the position of the boom body is finely adjusted using the detachable handle at the bottom. The overall length of the lifting boom must meet the requirement that the distance between the lower part of the safety valve and the installation flange is 10-15cm after the safety valve is fully lifted, ensuring sufficient space for the installation and adjustment of the sealing gasket.

[0040] The lifting rod support 9 is made of carbon steel and welded to the boiler channel steel. During use, the end of the lifting rod 8 is inserted into the lifting rod support 9, which provides support for the lifting rod 8.

[0041] The wireless remote control 10 is used to control the start, stop and speed of the power unit 3.

[0042] The lifting hook 11 is connected to the lifting rope on the electric winch of the power unit 3, providing a lifting fixation point for the lifting device frame 1. In use, the lifting hook 11 is hung on the hook crossbar at the top of the lifting rod 8.

[0043] The following are several specific embodiments of the application of the present invention.

[0044] Example 1

[0045] Figure 2 This is a schematic diagram of the safety valve fork structure in a specific embodiment of the present invention. The "support claw 12" in the figure is used to insert into the gap between the bottom flange of the safety valve and the valve body to achieve a lifting function. The "irregular bottom support tool 13" shown in the figure is not installed in the dovetail groove of the safety valve fork 5. It is mainly used for individual safety valves where the gap between the bottom flange and the valve body is not continuous. Its semi-circular structure, combined with the fastening force of the straps on the valve body fixing seat 6, achieves overall lifting of the safety valve. Both the "support claw" and the "irregular bottom support tool" can be quickly disassembled and assembled; the appropriate bottom support tool should be selected according to the site conditions during use.

[0046] Figure 3 This is a schematic diagram of the installation positions of the hoisting bracket, fixed pulleys, and hoisting hook in a specific embodiment of the present invention; the hoisting hook 11 is hung on the fixed crossbar at the top of the hoisting rod 8, and the hoisting rope passes through the three fixed pulleys 15 installed on the hoisting bracket 7 and is connected to the hoisting hook 11.

[0047] Figure 4 This is a schematic diagram of the structure and installation method of the hoisting rod support in a specific embodiment of the present invention; the hoisting rod support 9 is welded to the channel steel on the side of the boiler safety valve, and the end of the hoisting rod 8 is inserted into the hoisting rod support 9 to provide support and stability.

[0048] Figure 5 This is a schematic diagram of the lifting device in a specific embodiment of the present invention. The figure shows the state (working state) in which the safety valve rapid lifting device carries the safety valve to the boiler safety valve base.

[0049] Example 2

[0050] like Figure 6 As shown, the working process of the device when the bottom of the safety valve is open and suitable for the use of a forklift is as follows:

[0051] 1. With the safety valve raised and standing upright on the ground, check the shape of the bottom flange of the safety valve and select a suitable safety valve holder according to the shape.

[0052] 2. Place the safety valve lifting device upright on the ground, adjust the spacing of the support claws of the safety valve fork 5, and move the lifting device so that the support claws of the safety valve fork 5 are inserted into the gap of the bottom flange of the safety valve.

[0053] 3. Use the straps on the valve body mounting base 6 to fix the safety valve to the semi-circular mounting base of the valve body mounting base 6.

[0054] 4. Use the hand-held hoisting hook 11 to extend the hoisting rope.

[0055] 5. After the hoisting rope is stretched, hang the hoisting hook 11 on the horizontal bar at the top of the hoisting rod 8.

[0056] 6. After attaching the lifting hook 11, insert the end of the lifting rod 8 into the lifting rod support 9.

[0057] 7. After preparation, control the wireless remote control 10 to tighten the hoisting rope. Driven by the electric winch, the hoisting rope gradually tightens, and the lifting device along with the safety valve is lifted.

[0058] 8. After lifting to a suitable height, stop operating the wireless remote control 10, hold the lifting device firmly with your hand, operate the wireless remote control 10 to slowly lower the safety valve onto the boiler process safety valve base.

[0059] 9. Loosen the straps on the valve body fixing seat 6, move the safety valve quick lifting device horizontally, and pull the support claw on the safety valve fork 5 out of the gap below the safety valve. Use the wireless remote control 10 to lower the lifting device body to the ground.

[0060] 10. The lifting rod 8 is pulled out from the lifting rod support 9.

[0061] 11. Remove the lifting hook 11 from the top of the lifting rod 8.

[0062] 12. Use the wireless remote control 10 to tighten the hoisting rope.

[0063] Example 3

[0064] like Figure 7 As shown, the working process of using the irregular bottom support tool mentioned in safety valve fork 5, which is suitable for situations where the bottom of the safety valve is not completely open, is as follows:

[0065] 1. The safety valve is lifted and placed upright on the ground. Check the shape of the bottom flange of the safety valve and select a suitable safety valve holder according to the shape. In this embodiment, the safety valve is a type with a non-through bottom, so the original safety valve fork of the safety valve lifting device is replaced with a special-shaped bottom support tool.

[0066] 2. Place the safety valve lifting device upright on the ground, and move the lifting device so that the special-shaped bottom support tool of the safety valve fork 5 is inserted into the gap of the bottom flange of the safety valve.

[0067] 3. Use the straps on the valve body mounting base 6 to fix the safety valve to the semi-circular mounting base of the valve body mounting base 6.

[0068] 4. Use the hand-held hoisting hook 11 to extend the hoisting rope.

[0069] 5. After the hoisting rope is stretched, hang the hoisting hook 11 on the horizontal bar at the top of the hoisting rod 8.

[0070] 6. After attaching the lifting hook 11, insert the end of the lifting rod 8 into the lifting rod support 9.

[0071] 7. After preparation, control the wireless remote control 10 to tighten the hoisting rope. Driven by the electric winch, the hoisting rope gradually tightens, and the lifting device along with the safety valve is lifted.

[0072] 8. After lifting to a suitable height, stop operating the wireless remote control 10, hold the lifting device firmly with your hand, operate the wireless remote control 10 to slowly lower the safety valve onto the boiler process safety valve base.

[0073] 9. Loosen the straps on the valve body fixing seat 6, move the safety valve quick lifting device horizontally, and pull the support claw on the safety valve fork 5 out of the gap below the safety valve. Use the wireless remote control 10 to lower the lifting device body to the ground.

[0074] 10. The lifting rod 8 is pulled out from the lifting rod support 9.

[0075] 11. Remove the lifting hook 11 from the top of the lifting rod 8.

[0076] 12. Use the wireless remote control 10 to tighten the hoisting rope.

[0077] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0078] Except for the technical features described in the specification, all other technologies are known to those skilled in the art.

Claims

1. A safety valve rapid lifting device, characterized in that, The safety valve rapid lifting device includes a lifting device frame, a power unit, a safety valve fork, a lifting rod, and a lifting hook. The power unit is fixed to the lifting device frame, and the lifting hook is connected to the lifting rope on the electric winch of the power unit to provide a lifting fixation point for the lifting device frame. In use, the lifting hook is hung on the hook crossbar at the top of the lifting rod, and the safety valve fork is fixed below the lifting device frame to lift the safety valve from the bottom. The safety valve rapid lifting device also includes: A solar panel is fixed to the lifting device frame and connected to the power unit to charge the power unit. The power unit includes a control circuit board, a 24V lead-acid battery, and an electric winch. The electric winch is fixed to the lifting device frame, and the 24V lead-acid battery is connected to the electric winch to provide power. The front end of the hoisting rope is connected to the hoisting hook, and the end is fixed to the electric winch. The hoisting rope passes through two fixed pulleys on the lifting device frame. The control circuit board is connected to the electric winch to control its operation. A load-bearing wheel is installed below the frame of the lifting device; For safety valves whose bottom is not open and are not suitable for the use of the safety valve fork, the irregular bottom support tool is used to replace the safety valve fork. The safety valve is securely fixed in the circular frame of the irregular bottom support tool using the self-locking strap on the tip. Valve body fixing seat, which is welded to the lifting device frame. The semi-circular fixing seat is provided with strap fixing holes. After the safety valve is placed in the semi-circular fixing seat, it is fixed with straps. The hoisting support adopts a 7-shaped support structure and is welded to the frame of the lifting device. A fixed pulley is welded at the center line of the hoisting support to reduce resistance. The lifting rod support is made of carbon steel and welded to the boiler channel steel. In use, the end of the lifting rod is inserted into the lifting rod support, which provides support for the lifting rod. A wireless remote control is wirelessly connected to the power unit to control its start, stop, and speed.

2. The safety valve rapid lifting device according to claim 1, characterized in that, The lifting device has a frame made of carbon steel or aluminum alloy; handrails are installed at the top and bottom.

3. The safety valve rapid lifting device according to claim 1, characterized in that, The safety valve fork consists of a track and two support claws. The rear of the two support claws are installed in dovetail grooves in the track, and can slide left and right to adjust the distance between the two support claws according to the size of the safety valve. A self-locking nut is also provided for fixing after the position is adjusted.

4. The safety valve rapid lifting device according to claim 1, characterized in that, The upper part of the lifting rod is welded with a hook to fix the crossbar, and a plug is set at the end of the crossbar to prevent the lifting hook from slipping off. In order to ensure the strength of the lifting rod, the rod body can be reinforced with a three-section sleeve. The overall length of the lifting rod must meet the requirement that the lower part of the safety valve is 10-15cm away from the installation flange after the safety valve is fully lifted, so as to ensure that the sealing gasket has enough space for installation and adjustment.

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