Compressible sealing plug device for fluid loading and unloading crane pipe

Abstract

The utility model relates to the technical field of crane pipe devices in intelligent manufacturing, and mainly discloses a compressible sealing plug device for a fluid loading and unloading crane pipe, which comprises a vertical pipe, a sealing plug and an elastic connector, the vertical pipe is mounted at the tail end of a crane pipe body and is vertically arranged, the sealing plug is sleeved on the outer side of the vertical pipe and is in clearance connection with the vertical pipe, and the elastic connector is connected with the sealing plug. The sealing plug is matched with an oil inlet in the upper portion of the tank body, the elastic connector is arranged on the outer side of the vertical pipe in a sleeved mode and located above the sealing plug, the upper end of the elastic connector is in sealed connection with the outer side of the vertical pipe, the lower end of the elastic connector is in clearance connection with the vertical pipe, and the lower end of the elastic connector is in sealed connection with the upper end of the sealing plug. The elastic connector applies downward elastic force and buffering force in the horizontal direction to the sealing plug, the device can make up errors generated by an automatic alignment system, the vertical pipe sealing plug can completely plug a tank opening, and gas escape in the volatile liquid filling process is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of crane pipe devices in intelligent manufacturing, in particular to a compressible sealing plug device for loading and unloading crane pipes for fluids. Background Art

[0002] The crane pipe is a pipe that can be extended and moved like a crane neck. It is mainly composed of fixed, rotating, operating, and balancing mechanisms. It is mostly used for liquid loading and unloading at petroleum and chemical terminals. It is also called a fluid loading and unloading arm. According to the loading and unloading methods, it can be divided into top loading and unloading, bottom loading and unloading, open loading and unloading, and closed loading and unloading. The crane pipe loading is generally performed by the operator on site to align the vertical pipe of the crane pipe with the tank mouth. The labor intensity is high, the working environment affects the health of the operator, and there are safety hazards. At present, the automation transformation of the chemical industry is an important field of intelligent manufacturing. Through the transformation of artificial intelligence and automatic control technology, the operation process of chemical plants is made less human, unmanned, and intelligent, reducing the occurrence of major safety accidents caused by human misoperation. Due to the rapid development of artificial intelligence technology, fluid loading and unloading is also moving towards intelligent and fully automatic operation with the ability to identify the tank mouth of the tank truck, calibrate the tank mouth coordinates, and realize the whole process of tank truck loading and unloading without manual intervention. More and more chemical companies hope to use Internet technology to automatically fill the tank truck liquid and automatically locate the tank truck filling mouth.

[0003] During the top loading and unloading process, how to prevent gas from escaping during the loading of volatile liquids is an important issue. The traditional method is to install a sealing plug on the vertical pipe of the crane pipe, and insert the plug into the tank mouth when the vertical pipe is inserted into the tank mouth. However, due to certain bottlenecks in the visual automatic positioning technology, high-precision positioning cannot be guaranteed. In addition, there are factors such as mechanical errors and control errors, which cannot ensure that the vertical pipe is inserted into the tank mouth from the center point with high precision. Once the vertical pipe cannot be inserted into the tank mouth from the center point of the tank mouth, the sealing plug cannot be tightly inserted into the tank mouth, and a gap will be generated between the sealing plug and the tank mouth, causing gas to escape, polluting the environment and posing safety hazards. During the filling operation, since the sealing plug cannot tightly plug the tank mouth, the liquid that may leak, splash, and volatilize will cause harm to the operator. Utility Model Content

[0004] The purpose of the utility model is to solve the technical problems existing in the prior art and provide a compressible sealing plug device for a fluid loading and unloading crane pipe, which can make the sealing plug tightly plug the tank mouth under the condition of a certain error, make up for the deficiencies in the existing visual positioning and automatic control technology, and is of great significance to promoting the intelligent transformation of liquid filling in the chemical industry.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical solutions: a compressible sealing plug device for a fluid loading and unloading crane pipe, comprising a vertical pipe, which is installed at the end of the crane pipe body and is vertically arranged, the crane pipe body can drive the vertical pipe to move, the interior of the vertical pipe is hollow as an oil pipeline, the oil pipeline is connected to the oil supply pipeline, and the oil in the oil supply pipeline enters the tank body through the oil pipeline of the vertical pipe; a sealing plug, the sealing plug is sleeved on the outside of the vertical pipe and connected with the gap of the vertical pipe, the sealing plug is adapted to the oil inlet above the tank body for sealing the oil inlet; an elastic connector, the elastic connector is sleeved on the outside of the vertical pipe and is located above the sealing plug, the upper end of the elastic connector is sealedly connected to the outside of the vertical pipe, the lower end of the elastic connector is connected to the gap of the vertical pipe, the lower end of the elastic connection is sealedly connected to the upper end of the sealing plug, and the elastic connector applies a downward elastic force and a horizontal buffering force to the sealing plug.

[0006] Through the above technical solution, the elastic connector and the sealing plug form an integrated structure, so that the sealing plug has a certain amount of movable in the horizontal direction. During filling, the vertical tube is controlled to move downward by the automatic alignment system. When there is a slight error in program operation or recognition, the vertical tube can continue to move downward. When the lower end of the movable sealing plug touches the can mouth, the elastic connector will be deformed. When the elastic connector needs to restore its previous state, it will apply a downward and horizontal force to the sealing plug, so that the sealing plug continues to move toward the can mouth, thereby achieving a good sealing effect and compensating for the error during movement and recognition.

[0007] A further solution of the utility model is that the sealing plug is truncated cone-shaped, the outer diameter of the upper end of the sealing plug is larger than the outer diameter of the lower end of the sealing plug, and the upper end diameter of the inner hole of the sealing plug is larger than the lower end diameter of the inner hole of the sealing plug.

[0008] An alternative solution of the present invention is that the sealing plug is hemispherical, the outer diameter of the upper end of the sealing plug is larger than the outer diameter of the lower end of the sealing plug, and the upper end diameter of the inner hole of the sealing plug is larger than the lower end diameter of the inner hole of the sealing plug.

[0009] A further solution of the utility model is that the upper end of the elastic connector is sealed to the vertical pipe through a rigid connector, and the lower end of the elastic connector is sealed to the upper end of the sealing plug through a rigid connector.

[0010] A further solution of the utility model is that the rigid connector at the upper end of the elastic connector is welded to the outer wall of the vertical tube, the rigid connector at the lower end of the elastic connector is connected to the upper end surface of the sealing plug by bolts, and a gasket is arranged between the sealing plug and the rigid connector to ensure the sealing effect.

[0011] A further solution of the utility model is that the rigid connecting body is a flange.

[0012] An alternative solution of the utility model is that the upper end of the elastic connector is connected to the outer wall of the vertical tube by bonding, and the lower end of the elastic connector is connected to the sealing plug by bonding.

[0013] A further solution of the utility model is that the elastic connector is a metal bellows, and the outer diameter of the metal bellows is not greater than the outer diameter of the upper end of the sealing plug.

[0014] A further solution of the utility model is that the material of the sealing layer of the sealing plug is divided into nitrile, EPDM, polytetrafluoroethylene, etc. according to different loading media.

[0015] A further solution of the utility model is that the sealing plug and the elastic connector are integrally arranged at the lower end of the vertical pipe.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] The utility model provides a novel compressible sealing plug device which can be used for fluid loading and unloading, the device can solve the problem that the vertical tube sealing plug cannot plug the tank mouth tightly; it solves the tank mouth positioning error caused by the automatic positioning system being unable to provide a high-precision positioning algorithm, the device can compensate for the error generated by the automatic positioning system and reduce the requirements for algorithm positioning; the compressible sealing plug device can produce elastic deformation under the action of force, drive the sealing plug to move horizontally, and align the center of the sealing plug with the center of the tank mouth; the compressible sealing plug device can make the vertical tube sealing plug completely plug the tank mouth, prevent gas escape during the volatile liquid filling process, protect the environment, and avoid harm to the operator. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 A reference diagram of the use state of the utility model;

[0020] Figure 2 This is a schematic diagram of the overall structure of the compressible sealing device of the utility model;

[0021] Figure 3 It is a structural schematic diagram of the connection between the compressible sealing device of the utility model and the crane pipe body.

[0022] In the figure, 1, vertical pipe, 2, elastic connector, 3, rigid connector, 4, sealing plug, 5, crane pipe body, 6, tank body, 7, oil pipeline, 8, inner hole of sealing plug. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Example 1

[0025] like Figure 1-3 As shown, a compressible sealing plug device for a fluid loading and unloading crane pipe comprises a vertical pipe 1, a sealing plug 4 and an elastic connector 2.

[0026] Among them, the vertical pipe 1 is installed at the end of the crane pipe body 5 and is arranged vertically. The crane pipe body 5 can drive the vertical pipe 1 to move. The hollow interior of the vertical pipe 1 serves as an oil pipeline 7. The oil pipeline 7 is connected to the oil supply pipeline of the crane pipe body 5. The oil in the oil supply pipeline enters the tank body 6 through the oil pipeline 7 of the vertical pipe 1.

[0027] The sealing plug 4 is sleeved on the outside of the vertical pipe 1 and is gap-connected with the vertical pipe 1 . The sealing plug 4 is matched with the oil inlet above the tank body 6 to seal the oil inlet.

[0028] The elastic connector 2 is sleeved on the outside of the vertical tube 1 and is located above the sealing plug 4. The upper end of the elastic connector 2 is sealed and connected to the outside of the vertical tube 1, the lower end of the elastic connector 2 is gap connected to the vertical tube 1, and the lower end of the elastic connector 2 is sealed and connected to the upper end of the sealing plug 4. The elastic connector 2 applies a downward elastic force and a horizontal buffering force to the sealing plug 4.

[0029] A preferred embodiment of the above scheme is that, specifically, the sealing plug 4 is truncated cone-shaped, the outer diameter of the upper end of the sealing plug 4 is larger than the outer diameter of the lower end of the sealing plug 4, and the upper diameter of the inner hole 8 of the sealing plug is larger than the lower diameter of the inner hole 8 of the sealing plug. The elastic connector 2 is a metal bellows, which can be made of carbon steel, stainless steel, steel lined with plastic, aluminum, etc. The outer diameter of the metal bellows is not larger than the outer diameter of the upper end of the sealing plug 4.

[0030] The sealing plug 4 and the elastic connector 2 are integrally arranged at the lower end of the vertical pipe 1. The sealing layer material of the sealing plug 4 is divided into nitrile, EPDM, polytetrafluoroethylene, etc. according to different loading media.

[0031] Through the above technical solution, the elastic connector 2 and the sealing plug 4 form an integrated compressible sealing plug structure, so that the sealing plug 4 has a certain movable amount in the horizontal direction. During filling, the vertical tube 1 is controlled to move downward by the automatic alignment system. When the program is running or there is a slight error in recognition, the vertical tube 1 can continue to move downward. When the lower end of the movable sealing plug hits the mouth of the tank body 6, the elastic connector 2 will be deformed. When the elastic connector 2 needs to restore its previous state, it will apply a downward and horizontal force to the sealing plug 4, so that the sealing plug 4 continues to move toward the mouth of the tank, thereby achieving a good sealing effect and compensating for the error during movement and recognition.

[0032] Example 2

[0033] This embodiment is based on embodiment 1, and realizes that the upper end of the elastic connector 2 is sealedly connected to the outside of the vertical tube 1, the lower end of the elastic connector 2 is gap-connected to the vertical tube 1, and the lower end of the elastic connector 2 is sealedly connected to the upper end of the sealing plug 4. A preferred embodiment is that the upper end of the elastic connector 2 is connected to the outer wall of the vertical tube 1 by bonding, and the lower end of the elastic connector 2 is connected to the sealing plug 4 by bonding. A section of metal bellows is cut, and the diameter of the metal bellows is larger than the diameter of the vertical tube 1. The inner wall of the upper end of the metal bellows and the outer wall of the vertical tube 1 are filled with sealant to fix and bond them, and the lower end of the metal bellows is fixed to the upper end face of the sealing plug 4 by sealant.

[0034] The sealing plug 4 may also be hemispherical in shape, the upper outer diameter of the hemispherical sealing plug 4 is larger than the lower outer diameter of the sealing plug 4 , and the upper diameter of the sealing plug inner hole 8 is larger than the lower diameter of the sealing plug inner hole 8 .

[0035] Example 3

[0036] This embodiment is based on embodiment 2, and the difference lies in that the upper end of the elastic connector 2 is sealedly connected to the outer side of the vertical tube 1, the lower end of the elastic connector 2 is gap-connected to the vertical tube 1, and the lower end of the elastic connector 2 is sealedly connected to the upper end of the sealing plug. An optimal embodiment is that the upper end of the elastic connector 2 is sealedly connected to the vertical tube 1 through a rigid connector 3, and the lower end of the elastic connector 2 is sealedly connected to the upper end of the sealing plug 4 through the rigid connector 3. The rigid connector 3 can ensure the strength of the compressible sealing plug and improve its service life.

[0037] Wherein, the rigid connector 3 is a flange.

[0038] The flange at the upper end of the elastic connector 2 is welded to the outer wall of the vertical pipe 1, the flange at the lower end of the elastic connector 2 is bolted to the upper end surface of the sealing plug 4, and a gasket is provided between the sealing plug 4 and the rigid connector 3 to ensure the sealing effect.

[0039] According to the above embodiments, when the utility model is in use, the compressible sealing plug is fixed on the vertical tube 1 of the main body of the fluid loading and unloading crane pipe. When the vertical tube 1 is inserted into the tank mouth of the tank body 6, the compressible sealing plug can follow the vertical tube 1 to plug the tank mouth tightly, preventing the gas from escaping during the filling process of volatile liquids, causing environmental pollution and causing safety accidents. When the vertical tube 1 is not inserted into the tank mouth from the center point, the compressible sealing plug can perform displacement compensation, and can compensate for the displacement with a certain offset without moving the vertical tube 1. When the sealing plug 4 hits the tank mouth, it can undergo elastic deformation and move laterally to ensure that the sealing plug is inserted into the tank mouth from the center point, ensuring that the sealing plug 4 can plug the tank mouth tightly even when the automatic positioning system is inaccurate. This technical solution provides a new type of sealing form for crane pipe filling of volatile liquids, solving the problem that the sealing plug cannot completely plug the tank mouth in the traditional way.

[0040] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A compressible sealing plug device for a fluid loading and unloading crane pipe, characterized in that: The invention comprises a vertical pipe (1), which is installed at the end of a crane pipe body (5) and is arranged vertically. The crane pipe body (5) can drive the vertical pipe (1) to move. The interior of the vertical pipe (1) is hollow and serves as an oil pipeline (7). The oil pipeline (7) is connected to the oil supply pipeline of the crane pipe body (5); a sealing plug (4), which is sleeved on the outside of the vertical pipe (1) and is gap-connected with the vertical pipe (1). The sealing plug (4) is matched with the oil inlet on the top of the tank body (6); and an elastic connector (2), which is sleeved on the outside of the vertical pipe (1) and is located above the sealing plug (4). The upper end of the elastic connector (2) is sealingly connected to the outside of the vertical pipe (1), the lower end of the elastic connector (2) is gap-connected with the vertical pipe (1), the lower end of the elastic connector (2) is sealingly connected to the upper end of the sealing plug (4), and the elastic connector (2) applies a downward elastic force and a buffering force in the horizontal direction to the sealing plug (4).

2. A compressible sealing plug device for a fluid loading and unloading crane pipe according to claim 1, characterized in that: The sealing plug (4) is truncated cone-shaped, the outer diameter of the upper end of the sealing plug (4) is larger than the outer diameter of the lower end of the sealing plug (4), and the upper end diameter of the inner hole (8) of the sealing plug is larger than the lower end diameter of the inner hole (8) of the sealing plug.

3. A compressible sealing plug device for a fluid loading and unloading crane pipe according to claim 2, characterized in that: The elastic connector (2) is a metal bellows, and the outer diameter of the metal bellows is not greater than the outer diameter of the upper end of the sealing plug (4).

4. A compressible sealing plug device for a fluid loading and unloading crane pipe according to claim 3, characterized in that: The sealing plug (4) and the elastic connector (2) are integrally arranged at the lower end of the vertical tube (1).

5. A compressible sealing plug device for a fluid loading and unloading crane pipe according to any one of claims 1 to 4, characterized in that: The upper end of the elastic connector (2) is sealedly connected to the vertical pipe (1) through the rigid connector (3), and the lower end of the elastic connector (2) is sealedly connected to the upper end of the sealing plug (4) through the rigid connector (3).

6. A compressible sealing plug device for a fluid loading and unloading crane pipe according to claim 5, characterized in that: The rigid connector (3) is a flange, the flange at the upper end of the elastic connector (2) is welded to the outer wall of the vertical pipe (1), the flange at the lower end of the elastic connector (2) is connected to the upper end surface of the sealing plug (4) by bolts, and a gasket is provided between the sealing plug (4) and the flange.

7. A compressible sealing plug device for a fluid loading and unloading crane pipe according to claim 1, characterized in that: The upper end of the elastic connector (2) is connected to the outer wall of the vertical tube (1) by bonding, and the lower end of the elastic connector (2) is connected to the sealing plug (4) by bonding.

8. A compressible sealing plug device for a fluid loading and unloading crane pipe according to claim 1, characterized in that: The sealing plug (4) is hemispherical, the outer diameter of the upper end of the sealing plug (4) is larger than the outer diameter of the lower end of the sealing plug (4), and the upper diameter of the inner hole (8) of the sealing plug is larger than the lower diameter of the inner hole (8) of the sealing plug.

Images