Anti-condensation device for loading crane pipe

Abstract

The present invention discloses an anti-condensation device for loading crane pipes, comprising an inner tube, a sleeve, a lifting member and an air source, wherein the inner tube is connected to the crane pipe, the sleeve and the lifting member are sleeved on the inner tube, the lifting member is located inside the sleeve, the lifting member is slidably connected to the sleeve and the inner tube respectively, a liquid inlet and outlet are provided on the inner tube, the liquid inlet and outlet are located inside the sleeve and below the lifting member, the air source and the crane pipe are detachably connected via a quick connector, the air source is arranged at one end of the crane pipe away from the inner tube, a ventilation interface is provided at the top of the sleeve, and the sleeve is connected to the air source via the ventilation interface. The use of the anti-condensation device of the present invention avoids leakage of liquid medium in the crane pipe and damage to joint components, and at the same time avoids condensation of the medium in the crane pipe to cause pressure build-up, thereby improving the safety of chemical product transportation; when in use, the anti-condensation device is directly connected to the crane pipe, without changing the original shape of the crane pipe, and without adding a heating device to the crane pipe, and is convenient and quick to use.

Description

Technical Field

[0001] The present invention relates to the field of petrochemical product transportation, and more specifically, to an anti-condensation device for loading crane pipes. Background Art

[0002] The crane pipe is a special equipment used in the liquid loading and unloading process of the petrochemical industry, also known as the liquid loading and unloading arm. The crane pipe is connected with rigid pipes and elbows by a rotating joint to realize the mobile equipment for transmitting liquid media between trains, tank cars and trestle storage and transportation pipelines, replacing the old hose connection. It has the characteristics of high safety, flexibility and long life. The crane pipe is mainly composed of fixed, rotating, operating, balancing and other mechanisms and oil pipes.

[0003] However, some chemical products have high freezing points. To keep the chemical products in liquid state, it is necessary to add heat tracing during transportation. The heat tracing device covers or wraps around the entire crane pipe. Since there are multiple sets of movable elbows in the crane pipe, it will undergo multiple movements such as rotation and up and down movement during loading. In addition, the crane pipe's alignment action depends on the on-site operator to use external force to operate. The thick insulation device on the outside of the crane pipe makes the operation cumbersome and cumbersome. Moreover, due to the appearance of the crane pipe, the failure rate of the heat tracing pipeline on its active part increases accordingly during the movement.

[0004] In addition, after the crane pipe is loaded, the inlet and outlet are closed and the heating is sealed, the temperature inside the crane pipe continues to rise, which will cause the volume of the liquid in the crane pipe to expand, causing leakage of the liquid in the crane pipe and even damage to the joint components.

[0005] Moreover, when using the existing crane pipe to transport easily condensable liquids, the liquids are easily condensed into solids inside the crane pipe, causing the pipeline to be blocked and causing the risk of pressure build-up, which greatly reduces safety.

[0006] Therefore, in view of the above problems such as the easy failure of heating pipelines during the transportation of chemical products, the easy leakage of liquid in the crane pipe after loading, and the easy condensation of condensable products in the crane pipe causing pressure buildup, how to efficiently and safely transport condensable chemical products has become one of the key concerns and urgent issues to be solved in this field. Summary of the invention

[0007] In order to solve the problems of easy failure of heating pipelines in the existing chemical product transportation process, easy leakage of liquid in the crane pipe after loading, and easy condensation of products in the crane pipe causing pressure buildup, the present invention innovatively provides an anti-condensation device for the loading crane pipe, which is connected to the loading crane pipe. After loading is completed, the remaining liquid medium in the crane pipe is blown into the sleeve outside the inner pipe by gas, and the liquid is kept warm or cold in the sleeve to avoid condensation of the medium in the crane pipe causing pressure buildup, thereby improving the safety of chemical product transportation; when loading again, the liquid in the sleeve is pressed back into the inner pipe to make the liquid medium flow into the car again. There is no need to heat the crane pipe again. The solid medium in the sleeve can be melted into liquid medium by using the temperature of the liquid medium in the inner pipe during loading, and there is no need to add a heating device to the crane pipe.

[0008] To achieve the above-mentioned technical objectives, the present invention discloses an anti-condensation device for loading crane pipes, comprising: an inner tube, a sleeve, a lifting member and an air source, the inner tube is connected to the crane pipe, the sleeve and the lifting member are sleeved on the inner tube, the lifting member is located inside the sleeve, the lifting member is slidingly connected to the sleeve and the inner tube respectively, a liquid inlet and outlet are opened on the inner tube, the liquid inlet and outlet are located inside the sleeve and below the lifting member, the air source is detachably connected to the crane pipe through a quick connector, the air source is arranged at one end of the crane pipe away from the inner tube, a ventilation interface is provided on the top of the sleeve, and the sleeve is connected to the air source through the ventilation interface.

[0009] Furthermore, the anti-condensation device also includes a pneumatic valve, which is arranged on the pipe body of the crane pipe close to the quick connector, and the ventilation interface is connected to the pneumatic valve through a ventilation pipe.

[0010] Furthermore, the lifting member is a piston or an air bag.

[0011] Furthermore, a sealing ring is provided between the lifting member and the inner wall of the sleeve.

[0012] Furthermore, a heat-tracing and heat-insulating layer is provided on the outside of the sleeve.

[0013] The present invention also discloses an anti-condensation device for loading crane pipes, comprising: an inner tube, a sleeve, a lifting member, an air source and an elastic member for pressing down the lifting member, the inner tube is connected to the crane pipe, the sleeve and the lifting member are sleeved on the inner tube, the lifting member is located inside the sleeve, the lifting member is slidingly connected to the sleeve and the inner tube respectively, a liquid inlet and outlet are provided on the inner tube, the liquid inlet and outlet are located inside the sleeve and below the lifting member, the air source is detachably connected to the crane pipe via a quick connector, the air source is arranged at one end of the crane pipe away from the inner tube, the elastic member is arranged above the lifting member, and a through hole is provided on the top of the sleeve.

[0014] Furthermore, the elastic member is a spring, and two ends of the spring respectively abut against the sleeve and the lifting member.

[0015] Furthermore, the lifting member is a piston or an air bag.

[0016] Furthermore, a sealing ring is provided between the lifting member and the inner wall of the sleeve.

[0017] Furthermore, a heat-tracing and heat-insulating layer is provided on the outside of the sleeve.

[0018] The beneficial effects of the present invention are:

[0019] (1) The anti-condensation device for loading crane pipe provided by the present invention is connected to the loading crane pipe. After loading is completed, the remaining liquid medium in the crane pipe is purged into the sleeve outside the inner pipe by the gas provided by the gas source. The liquid is kept warm or cold in the sleeve, so that the condensable medium does not condense, thereby avoiding leakage of the liquid medium in the crane pipe and damage to the joint parts. At the same time, it is avoided that the condensable medium condenses in the crane pipe to cause pressure build-up, thereby improving the safety of chemical product transportation.

[0020] (2) During the use of the anti-condensation device for loading crane pipes provided by the present invention, when the loaded crane pipe is loaded again, the medium in the sleeve is pressed back into the inner tube, so that the liquid medium flows into the vehicle again; in this process, there is no need to heat the crane pipe again, and the solid medium in the sleeve can be melted into liquid medium by using the temperature of the liquid medium in the inner tube during loading, and then the liquid medium is pressed back into the inner tube. When using the anti-condensation device of the invention, there is no need to add a heating device to the crane pipe, and it is convenient and quick to use.

[0021] (3) The anti-condensation device for loading crane pipe provided by the present invention is directly connected to the crane pipe when in use, without changing the original shape of the crane pipe, and has a simple structure, a short installation period, and is easy to replace, thereby reducing the transportation cost of chemical products. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the anti-condensation device used for loading crane pipes.

[0023] Figure 2 The present invention is a schematic structural diagram of an anti-condensation device for loading crane pipes according to another embodiment.

[0024] In the figure,

[0025] 1. Inner tube; 2. Sleeve; 3. Lifting piece; 4. Air source; 5. Pneumatic valve; 6. Liquid inlet and outlet; 7. Ventilation pipe; 8. Ventilation interface; 9. Through hole; 10. Elastic part; 11. Sealing ring; 12. Heating and insulation layer; 13. Lifting pipe; 14. Flange; 15. Control valve; 16. Quick connector. DETAILED DESCRIPTION

[0026] The anti-condensation device for loading crane pipe provided by the present invention is explained and illustrated in detail below in conjunction with the drawings in the specification.

[0027] like Figure 1 As shown, this embodiment specifically discloses an anti-condensation device for loading a crane pipe, including an inner tube 1, a sleeve 2, a lifting member 3 and an air source 4, the inner tube 1 is connected to the crane pipe 13, the sleeve 2 and the lifting member 3 are sleeved on the inner tube 1, the lifting member 3 is located inside the sleeve 2, the lifting member 3 is slidingly connected to the sleeve 2 and the inner tube 1 respectively, a liquid inlet and outlet 6 is opened on the inner tube 1, the liquid inlet and outlet 6 is located inside the sleeve 2 and below the lifting member 3, the air source 4 is detachably connected to the crane pipe 13 through a quick connector 16, the air source 4 is arranged at one end of the crane pipe 13 away from the inner tube 1, a ventilation interface 8 is provided on the top of the sleeve 2, and the sleeve 2 is connected to the air source 4 through the ventilation interface 8.

[0028] The inner tube 1 is connected between the lifting pipe 13 and the control valve 15. The upper part of the inner tube 1 is connected to the lifting pipe 13 through the flange 14, and the lower part of the inner tube 1 is connected to the pipe body where the control valve 15 is located through the flange.

[0029] The anti-condensation device also includes a pneumatic valve 5, which is arranged on the pipe body of the crane tube near the quick connector 16, and the ventilation interface 8 is connected to the pneumatic valve 5 through the ventilation pipe 7. The ventilation pipe 7 is a metal hose, and during use, the ventilation pipe 7 moves with the crane tube 13, and preferably, the ventilation pipe 7 is wrapped around the crane tube.

[0030] When loading is completed, the control valve 15 below the inner tube 1 is closed, and the switch on the quick connector 16 at the other end of the crane tube 13 is also in a closed state; the quick connector is an API interface (application programming interface, when the quick connector 16 is connected to the docking pile, the quick connector 16 is opened, the pneumatic valve 5 is opened, the channel of the quick connector 16 and the gas source 4 is connected, the gas in the gas source 4 on the docking pile is introduced into the crane tube 13, and the gas provided by the gas source 4 pushes the medium in the crane tube 13 into the sleeve 2 through the liquid inlet and outlet 6 of the inner tube 1, and the lifting member 3 is pushed upward under the pressure of the liquid medium, and the medium is temporarily stored in the sleeve 2, and the crane tube 13 no longer contains or contains a small amount of residual liquid medium; even if the residual liquid medium condenses, it will be melted by the liquid with temperature in the later loading process, so that it can enter the car, and will not cause a large amount of liquid medium to condense and block the crane tube flow channel.

[0031] When loading the vehicle again, close the switch on the quick connector 16, connect the quick connector 16 with the connector of the loaded vehicle, open the switch and the pneumatic valve 5 on the quick connector 16, and the gas in the gas source 4 enters the upper cavity of the sleeve 2 through the vent pipe 7. The gas provides pressure to push the lifting member 3 to move downward, and transmits the force to the medium in the lower cavity of the sleeve 2 through the lifting member 3. At this time, the medium may be liquid or condensed and solid; if the medium is liquid, the air pressure pushes the lifting member 3 to move downward, and pushes the liquid medium along the liquid inlet and outlet 6 back to the inside of the crane pipe 13 again, and is loaded into the vehicle; if the medium is solid, the liquid heated by the previous stage flowing in the crane pipe 13 at this time continuously transmits heat to the medium in the sleeve 2 through the inner pipe 1. Due to the control of the flow rate during loading, the loading process generally takes more than half an hour. During this time, the solid medium in the sleeve 2 will be melted, and the melted liquid medium will flow into the vehicle again through the crane pipe.

[0032] By adopting the anti-condensation device of the present invention, there is no need to heat the crane pipe 13, the volume is reduced, the energy consumption is reduced, and even no external energy is needed. The medium in the sleeve is heated by transferring heat through the inner pipe 1, thereby reducing costs.

[0033] In another embodiment, if Figure 2 As shown, it includes an inner tube 1, a sleeve 2, a lifting member 3, an air source 4 and an elastic member 10 for pressing down the lifting member 3, the inner tube 1 is connected to the lifting tube 13, the sleeve 2 and the lifting member 3 are sleeved on the inner tube 1, the lifting member 3 is located inside the sleeve 2, the lifting member 3 is slidingly connected to the sleeve 2 and the inner tube 1 respectively, a liquid inlet and outlet 6 is opened on the inner tube 1, the liquid inlet and outlet 6 is located inside the sleeve 2 and below the lifting member 3, the air source 4 and the lifting tube 13 are detachably connected through a quick connector 16, the air source 4 is arranged at one end of the lifting tube 13 away from the inner tube 1, the elastic member 10 is arranged above the lifting member 3, and a through hole 9 is opened on the top of the sleeve 2.

[0034] The elastic member 10 is a spring, and two ends of the spring are respectively against the sleeve 2 and the lifting member 3 .

[0035] When loading is completed, the control valve 15 below the inner tube 1 is closed, and the switch on the quick connector 16 at the other end of the crane tube 13 is also in the closed state; when the quick connector 16 is connected to the docking pile, the quick connector 16 is opened, and the channel of the quick connector 16 and the gas source 4 are connected, and the gas in the gas source 4 on the docking pile is introduced into the crane tube 13, and the gas provided by the gas source 4 pushes the medium in the crane tube 13 into the sleeve 2 through the liquid inlet and outlet 6 of the inner tube 1, and the lifting member 3 is pushed upward under the pressure of the liquid medium, and the medium is temporarily stored in the sleeve 2; while the lifting member 3 rises, the spring above the lifting member 3 is compressed, and the compressed air in the upper cavity of the sleeve 2 is discharged through the through hole 9 at the top of the sleeve.

[0036] When loading the vehicle again, turn off the switch on the quick connector 16, the quick connector 16 docks with the connector of the vehicle to be loaded, and the restoring elastic force of the spring provides pressure to push the lifting member 3 downward, pushing the liquid medium along the liquid inlet and outlet 6 back to the inside of the crane pipe 13 again to be loaded into the vehicle.

[0037] The lifting member 3 is a piston or an air bag, and is slidably connected to the inner tube 1 and the sleeve 2, and performs lifting motion in the sleeve.

[0038] A sealing ring 11 is provided between the lifting member 3 and the inner wall of the sleeve 2 to ensure gas isolation between the upper and lower parts of the lifting member 3 in the sleeve 2, thereby providing better pressure to push the lifting member 3 to perform lifting motion.

[0039] The outer portion of the sleeve 2 is provided with a heat tracing and heat-insulating layer 12, which can ensure that the medium inside the sleeve 2 is in a liquid state and does not condense.

[0040] The inner pipe 1 is connected to the crane pipe 13 through a flange 14, and the inner pipe 1 is also connected to the pipe where the control valve 15 below it is located through a flange 14, which is convenient for disassembly, replacement and maintenance of the anti-condensation device.

[0041] In the present invention, the gas provided by the gas source 4 is nitrogen, and other inert gases may also be used.

[0042] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0043] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] In the description of this specification, the description with reference to the terms "this embodiment", "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any at least one embodiment or example. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples, unless they are contradictory.

[0045] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0046] 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 simple improvements made to the essential contents of the present invention should be included in the protection scope of the present invention.

Claims

1. An anti-condensation device for loading crane pipes, characterized in that: include: An inner tube (1), a sleeve (2), a lifting member (3) and an air source (4), wherein the inner tube (1) is connected to a lifting tube (13), the sleeve (2) and the lifting member (3) are sleeved on the inner tube (1), the lifting member (3) is located inside the sleeve (2), and the lifting member (3) is slidably connected to the sleeve (2) and the inner tube (1) respectively, the inner tube (1) is provided with a liquid inlet and outlet (6), the liquid inlet and outlet (6) is located inside the sleeve (2) and below the lifting member (3), the air source (4) and the lifting tube (13) are detachably connected via a quick connector (16), the air source (4) is arranged at one end of the lifting tube (13) away from the inner tube (1), a ventilation interface (8) is provided at the top of the sleeve (2), and the sleeve (2) is connected to the air source (4) via the ventilation interface (8).

2. The anti-condensation device for loading crane pipe according to claim 1 is characterized in that: The anti-condensation device also includes a pneumatic valve (5), which is arranged on the pipe body of the crane pipe close to the quick connector (16), and the ventilation interface (8) is connected to the pneumatic valve (5) through a ventilation pipe (7).

3. The anti-condensation device for loading crane pipe according to claim 1 or 2, characterized in that: The lifting member (3) is a piston or an air bag.

4. The anti-condensation device for loading crane pipe according to claim 1 is characterized in that: A sealing ring (11) is provided between the lifting member (3) and the inner wall of the sleeve (2).

5. The anti-condensation device for loading crane pipes according to claim 1 is characterized in that: The sleeve (2) is externally provided with a heat tracing and thermal insulation layer (12). 6.An anti-condensation device for loading crane pipes, characterized in that: include: An inner tube (1), a sleeve (2), a lifting member (3), an air source (4) and an elastic member (10) for pressing down the lifting member (3); the inner tube (1) is connected to a lifting tube (13); the sleeve (2) and the lifting member (3) are sleeved on the inner tube (1); the lifting member (3) is located inside the sleeve (2); the lifting member (3) is slidably connected to the sleeve (2) and the inner tube (1) respectively; a liquid inlet and outlet (6) is provided on the inner tube (1); the liquid inlet and outlet (6) is located inside the sleeve (2) and below the lifting member (3); the air source (4) and the lifting tube (13) are detachably connected via a quick connector (16); the air source (4) is provided at one end of the lifting tube (13) away from the inner tube (1); the elastic member (10) is provided above the lifting member (3); and a through hole (9) is provided at the top of the sleeve (2).

7. The anti-condensation device for loading crane pipe according to claim 6 is characterized in that: The elastic member (10) is a spring, and two ends of the spring respectively abut against the sleeve (2) and the lifting member (3).

8. The anti-condensation device for loading crane pipe according to claim 6, characterized in that: The lifting member (3) is a piston or an air bag.

9. The anti-condensation device for loading crane pipes according to claim 6, characterized in that: A sealing ring (11) is provided between the lifting member (3) and the inner wall of the sleeve (2).

10. The anti-condensation device for loading crane pipes according to claim 6, characterized in that: The sleeve (2) is externally provided with a heat tracing and thermal insulation layer (12).

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