Crane pipe with anti-tilt sealing cap

Abstract

The utility model relates to the technical field of crane pipes, and discloses a crane pipe with an anti-inclination sealing cap, which comprises a vertical pipe capable of moving up and down and the sealing cap capable of moving up and down on the vertical pipe, the sealing cap is arranged on the periphery of the vertical pipe in a surrounding manner, a spring mechanism is arranged on the vertical pipe, and the vertical pipe is connected with the sealing cap through the spring mechanism. A sealing ring which is deformed by extrusion is arranged between the spring mechanism and the sealing cap; on the premise of ensuring that the sealing cap seals the tank opening of the tank car, the sealing cap reduces the impact force generated when the sealing cap makes contact with the tank opening of the tank car in the descending process of the vertical pipe during loading through the spring mechanism, and the situation that the loading arm or the tank car is damaged due to the conflict of vertical shifting force is avoided. The influence of inclination of the tank car on the vertical pipe in the loading process is reduced by the sealing cap through the sealing ring; the problem that in the process that the loading arm drives the sealing cap to seal, the loading arm or the tank car is prone to being damaged due to confliction of up-and-down moving force is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of crane pipes, in particular to a crane pipe with an anti-tilt sealing cap. Background Art

[0002] Crane pipe is a pipe used for liquid loading and unloading in the petroleum industry, chemical industry, docks, etc. It has the characteristics of mobility, scalability, high safety and sensitivity.

[0003] The crane pipe is generally used in the fluid loading and unloading process of the petrochemical industry. Its alias is "fluid loading and unloading arm". The crane pipe adopts a rotary joint + rigid pipe + elbow connection to realize the activity of transmitting liquid media between trains, tank cars and trestle storage and transportation pipelines, replacing the backward hose connection. It is a relatively ideal special equipment in the fluid loading and unloading process.

[0004] When transporting oil, it is necessary to insert the vertical pipe into the tank mouth of the tank truck. In order to avoid wasting oil and gas, a sealing cap is often provided on the vertical pipe to seal the tank mouth of the tank truck. Patent application number "202221513962.3" discloses a top loading cylinder compression type closed loading crane pipe: by setting a loading crane pipe body, it is suitable for the loading crane pipe body to be closed for loading, so as to achieve the function of sealing the filling port and recovering oil and gas, and the cylinder body is used to drive the outer arm and the conical sealing cap to be pressed on the upper part of the filling port, and a pull rod with the same length as the outer arm is used to ensure the verticality of the vertical pipe of the crane pipe, and provide a stable and reliable pressing force for the upper conical sealing cap. The operation is simple, and the pressing force acts between the sealing component and the filling port. The pressing force of the sealing component on the filling port is stable and reliable, and the pressing force can overcome the adverse factors such as the oil and gas pressure in the tank truck and the settlement of the tank truck. The sealing effect fully meets the requirements of relevant regulations, and relies on the cylinder body to drive the sealing component to seal, which can continuously follow up the filling port and provide stable sealing requirements.

[0005] However, there are various external forces that interfere with the sealing surface, such as the changes in the height of the tank truck when empty or loaded, the shaking of the crane pipe when the liquid level is low due to the high-speed flow of liquid, and the up and down movement of the crane pipe when the liquid level is high. In order to seal, the existing equipment always applies a continuous downward force to the sealing cap, which conflicts with the shaking and up and down movement force, making the crane pipe easily damaged by the conflicting forces, affecting the use of the crane pipe. Utility Model Content

[0006] The utility model aims to provide a crane pipe with an anti-tilt sealing cap, aiming to solve the problem in the prior art that in the process of the crane pipe driving the sealing cap to seal, there is a conflict between the up and down forces, which can easily cause damage to the crane pipe or the tank truck.

[0007] The utility model is implemented as follows: a crane pipe with an anti-tilt sealing cap comprises a vertically movable vertical pipe and a sealing cap which moves up and down on the vertical pipe, wherein the sealing cap is arranged around the outer circumference of the vertical pipe, a spring mechanism is provided on the vertical pipe, the vertical pipe is connected to the sealing cap via the spring mechanism, and an extrusion-deformed sealing ring is installed between the spring mechanism and the sealing cap.

[0008] Furthermore, the spring mechanism includes a fixing ring and a pressure ring, the fixing ring is fixed around the outer circumference of the vertical tube, the fixing ring is connected to the pressure ring through a spring column, and the pressure ring and the sealing ring are fixed to the sealing cap through bolts.

[0009] Furthermore, the top end surface of the sealing ring abuts against the bottom of the pressure ring, the bottom end surface of the sealing ring abuts against the top of the sealing cap, and the pressure ring and the sealing cap are arranged with an upper and lower interval.

[0010] Furthermore, the fixing ring and the pressing ring are arranged relative to each other with a spacing therebetween in the longitudinal direction, and the fixing ring is located above the pressing ring.

[0011] Furthermore, the interval between the fixing ring and the pressure ring forms a compression area for the spring column to be compressed and deformed, and a plurality of spring columns are arranged at intervals around the circumference of the extended compression area.

[0012] Furthermore, the vertical tube is connected to a lifting driver for driving the vertical tube to move up and down, and the lifting driver is electrically connected to a limit switch, and the limit switch is installed on the vertical tube.

[0013] Furthermore, the limit switch and the sealing cap are arranged opposite to each other in the longitudinal direction, and the limit switch is located above the sealing cap.

[0014] Furthermore, the limit switch includes a switch seat and a driving rod that controls the lifting drive to stop driving the vertical tube to move downward, one end of the driving rod is hingedly mounted on the switch seat, the switch seat is mounted on the outer periphery of the vertical tube, and the other end of the driving rod is mounted with a guide wheel, and the guide wheel is exposed above the sealing cap.

[0015] Furthermore, the switch seat is installed on the fixing ring.

[0016] Furthermore, the sealing cap is connected with a ventilation pipe, and the ventilation pipe is longitudinally inserted into the top of the sealing cap.

[0017] Compared with the prior art, the utility model provides a crane pipe with an anti-tilt sealing cap. On the premise of ensuring that the sealing cap seals the tank mouth of the tank truck, the sealing cap reduces the impact force when the sealing cap contacts the tank mouth of the tank truck during the descending process of the vertical pipe during loading through a spring mechanism, thereby avoiding the damage of the crane pipe or the tank truck caused by the conflict of up and down forces. The sealing cap reduces the influence of the tilt of the tank truck during the loading process on the vertical pipe through the sealing ring. This solves the problem that the crane pipe or the tank truck may be easily damaged due to the conflict of up and down forces in the process of the crane pipe driving the sealing cap to seal. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional schematic diagram of a crane pipe with an anti-tilt sealing cap provided by the utility model;

[0019] Figure 2 The utility model is a schematic diagram of the cross-sectional structure of a crane pipe with an anti-tilt sealing cap provided by the utility model.

[0020] In the figure: a vertical pipe 10, a sealing cap 20, a spring mechanism 30, a sealing ring 40, a limit switch 50, a ventilation pipe 60, a fixing ring 31, a pressure ring 32, a spring column 33, a switch seat 51, a driving rod 52, and a guide wheel 53. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0022] The implementation of the present utility model is described in detail below in conjunction with specific embodiments.

[0023] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of the present utility model, it should be understood that if the terms "upper", "lower", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on the present utility model. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0024] Reference Figure 1-2 As shown, it is a preferred embodiment provided by the utility model.

[0025] The hanging pipe with an anti-tilt sealing cap 20 includes a hanging pipe 10 that moves up and down and a sealing cap 20 that moves up and down on the hanging pipe 10. The sealing cap 20 is arranged around the outer periphery of the hanging pipe 10. A spring mechanism 30 is provided on the hanging pipe 10. The hanging pipe 10 is connected to the sealing cap 20 through the spring mechanism 30. An extrusion-deformed sealing ring 40 is installed between the spring mechanism 30 and the sealing cap 20.

[0026] The above-mentioned crane pipe with an anti-tilt sealing cap, under the premise of ensuring that the sealing cap 20 seals the tank mouth of the tank truck, reduces the impact force when the sealing cap 20 contacts the tank mouth of the tank truck during the descending process of the vertical pipe 10 during loading through the spring mechanism 30, thereby avoiding the damage of the crane pipe or the tank truck caused by the conflict of the up and down forces. The sealing cap 20 reduces the influence of the tilt of the tank truck on the vertical pipe 10 during the loading process through the sealing ring 40; the problem that the crane pipe or the tank truck may be easily damaged due to the conflict of the up and down forces in the process of the crane pipe driving the sealing cap 20 to seal is solved.

[0027] In this embodiment, the spring mechanism 30 includes a fixing ring 31 and a pressing ring 32. The fixing ring 31 is fixed around the outer periphery of the drop tube 10. The fixing ring 31 is connected to the pressing ring 32 through a spring column 33. The pressing ring 32 and the sealing ring 40 are fixed to the sealing cap 20 through bolts. In this way, when the sealing cap 20 is blocked by the tank opening of the tank truck, the sealing cap 20 will move in the opposite direction relative to the drop tube 10. The sealing cap 20 uses the elasticity of the spring column 33 to buffer the conflict between the sealing cap 20 and the force of the tank opening moving up and down, thereby avoiding damage to the drop tube or the tank truck.

[0028] In this embodiment, the top end surface of the sealing ring 40 abuts against the bottom of the pressure ring 32, and the bottom end surface of the sealing ring 40 abuts against the top of the sealing cap 20, and the pressure ring 32 and the sealing cap 20 are arranged with an upper and lower interval.

[0029] When the tank truck starts to load, the vehicle sometimes tilts slightly as the amount of liquid loaded changes, and the sealing cap 20 tilts with the tank mouth. Since there is a gap between the pressure ring 32 and the vertical pipe 10, and the material of the sealing ring 40 is soft, the vertical pipe 10 will not move with the tilt of the vehicle while ensuring sealing.

[0030] In this embodiment, the fixing ring 31 and the pressing ring 32 are arranged longitudinally with a relative spacing, and the fixing ring 31 is located above the pressing ring 32. In this way, the pressing ring 32 can use the fixing ring 31 as a buffer support point during the up and down sliding process.

[0031] In this embodiment, the interval between the fixing ring 31 and the pressing ring 32 forms a compression area for the spring column 33 to be compressed and deformed, and multiple spring columns 33 are arranged around the circumference of the compression area. In this way, the pressing ring 32 can further buffer the conflict between the sealing cap 20 and the upward and downward movement of the tank mouth through the elasticity of the multiple spring columns 33, thereby avoiding damage to the crane pipe or tank car.

[0032] In this embodiment, the drop tube 10 is connected to a lifting driver for driving the drop tube 10 to move up and down, and the lifting driver is electrically connected to a limit switch 50, which is installed on the drop tube 10. In this way, the drop tube 10 can be prevented from excessively extending into the tank opening of the tank truck, thereby preventing the drop tube 10 from damaging the tank truck.

[0033] In this embodiment, the limit switch 50 and the sealing cap 20 are arranged longitudinally opposite to each other, and the limit switch 50 is located above the sealing cap 20. In this way, the sealing cap 20 can touch the limit switch 50 during the upward movement relative to the vertical tube 10.

[0034] In this embodiment, the limit switch 50 includes a switch seat 51 and a driving rod 52 that controls the lifting drive to stop driving the vertical tube 10 to move downward. One end of the driving rod 52 is hingedly mounted on the switch seat 51, and the switch seat 51 is mounted on the outer periphery of the vertical tube 10. The other end of the driving rod 52 is installed with a guide wheel 53, and the guide wheel 53 is exposed above the sealing cap 20.

[0035] The limit switch 50 contacts the sealing cap 20 through the guide wheel 53 to reduce the friction resistance between the driving rod 52 and the sealing cap 20. When the sealing cap 20 pushes the guide wheel 53 through the upward force, the guide wheel 53 drives the driving rod 52 to control the lifting drive to stop driving the vertical pipe 10 to move downward.

[0036] The switch seat 51 is mounted on the fixing ring 31 .

[0037] In this embodiment, the sealing cap 20 is connected with a ventilation pipe 60, which is longitudinally inserted into the top of the sealing cap 20. In this way, the tank mouth of the tank car can discharge the excess gas in the tank car through the ventilation pipe 60.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A crane pipe with an anti-tilt sealing cap, characterized in that: It includes a vertically movable hanging tube and a sealing cap that moves up and down on the hanging tube. The sealing cap is arranged around the outer circumference of the hanging tube. A spring mechanism is provided on the hanging tube. The hanging tube is connected to the sealing cap through the spring mechanism. An extrusion-deformed sealing ring is installed between the spring mechanism and the sealing cap.

2. The crane pipe with an anti-tilt sealing cap according to claim 1, characterized in that: The spring mechanism comprises a fixing ring and a pressing ring. The fixing ring is fixed around the outer circumference of the vertical pipe. The fixing ring is connected to the pressing ring through a spring column. The pressing ring and the sealing ring are fixed to the sealing cap through bolts.

3. The crane pipe with an anti-tilt sealing cap as claimed in claim 2, characterized in that: The top end surface of the sealing ring abuts against the bottom of the pressure ring, and the bottom end surface of the sealing ring abuts against the top of the sealing cap. The pressure ring and the sealing cap are arranged with an upper and lower interval.

4. The crane pipe with an anti-tilt sealing cap as claimed in claim 3, characterized in that: The fixing ring and the pressing ring are arranged relative to each other with a spacing in the longitudinal direction, and the fixing ring is located above the pressing ring.

5. The crane pipe with an anti-tilt sealing cap as claimed in claim 4, characterized in that: The interval between the fixing ring and the pressure ring forms a compression area for the spring column to be compressed and deformed, and a plurality of spring columns are arranged at intervals around the circumference of the extended compression area.

6. The crane pipe with an anti-tilt sealing cap according to any one of claims 2 to 5, characterized in that: The vertical tube is connected with a lifting driver for driving the vertical tube to move up and down. The lifting driver is electrically connected with a limit switch, and the limit switch is installed on the vertical tube.

7. The crane pipe with an anti-tilt sealing cap as claimed in claim 6, characterized in that: The limit switch and the sealing cap are arranged opposite to each other in the longitudinal direction, and the limit switch is located above the sealing cap.

8. The crane pipe with an anti-tilt sealing cap as claimed in claim 7, characterized in that: The limit switch includes a switch seat and a driving rod that controls the lifting drive to stop driving the vertical tube to move downward. One end of the driving rod is hingedly mounted on the switch seat, and the switch seat is mounted on the outer periphery of the vertical tube. A guide wheel is mounted on the other end of the driving rod, and the guide wheel is exposed above the sealing cap.

9. The crane pipe with an anti-tilt sealing cap as claimed in claim 8, characterized in that: The switch seat is installed on the fixing ring.

10. The crane pipe with an anti-tilt sealing cap according to any one of claims 1 to 5, characterized in that: The sealing cap is connected with a ventilation pipe, and the ventilation pipe is longitudinally inserted into the top of the sealing cap.

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