Adjustable loading arm oil gas recovery sealing device and oil gas recovery method

Abstract

The invention discloses an adjustable loading arm oil gas recovery sealing device and an oil gas recovery method.The adjustable loading arm oil gas recovery sealing device comprises a sealing cap and a vertical pipe hook, and the vertical hook is fixedly connected or detachably connected to the outer wall of a vertical pipe; the sealing cap comprises a sealing cap side wall, a sealing cap top cover, an adjusting connecting plate and a sealing gasket. During operation, the movable sealing part is connected with a vertical pipe hook of a tank car of a corresponding car type and is fixedly connected with the tank car through a detachable shaft pin, and during operation, oil gas is collected through a gas phase pipeline of a top cover of the sealing cap and is conveyed to an oil gas recovery device. The sealing cap can be suitable for tank cars of different vehicle types, the sealing problem between the sealing cap and a pipe opening of the oil tank car and between the sealing cap top cover and a vertical pipe during oil receiving and dispatching operation of the tank cars of the different vehicle types is solved, environmental pollution caused by evaporation loss of operation oil due to untight sealing can be prevented, operation is carried out under a closed working condition, and the service life of the tank car is prolonged. Personal safety of operators is guaranteed, potential safety hazards are eliminated, and working efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of oil and gas recovery construction, and particularly relates to an adjustable crane pipe oil and gas recovery sealing device and an oil and gas recovery method. Background Art

[0002] With the increase of national strategic reserve efforts and the increasing number of national finished oil reserve projects, the corresponding train trestles and oil and gas recovery systems have increased accordingly. The sealing caps of traditional oil and gas recovery systems are fixed and are not suitable for oil and gas recovery work during the receiving and sending of oil by various types of vehicles. The adjustment of existing sealing caps is cumbersome and cannot be adjusted in time according to the type of tank truck being operated. There is also a certain gap between the sealing cap and the vertical pipe, resulting in a loose seal. Usually, there are certain safety hazards when operators are receiving and sending oil. At the same time, the oil vapor lost in the atmosphere will also cause environmental pollution.

[0003] Therefore, it is necessary to design an adjustable sealing device and an oil and gas recovery method suitable for various vehicle models to easily and quickly complete the oil and gas recovery of the crane pipe. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide an adjustable crane pipe oil and gas recovery sealing device and an oil and gas recovery method, which can be adjusted according to different types of tank trucks, thereby improving work efficiency.

[0005] In order to solve the above technical problems, according to one aspect of the present invention, an adjustable crane pipe oil and gas recovery sealing device is provided, comprising a sealing cap and a drop pipe hook; The vertical hook is fixedly or detachably connected to the outer wall of the vertical pipe; The sealing cap comprises a sealing cap side wall, a sealing cap top cover, an adjusting connecting plate and a sealing gasket; the sealing cap side wall is a thin wall of a hollow truncated cone structure; the sealing cap top cover is a circular ring plate, the outer ring edge of which is connected to the sealing cap side wall; the adjusting connecting plate is connected to the upper part of the sealing cap top cover; a circular hole for the vertical pipe to pass through is opened in the middle of the sealing gasket, and the outer edge of the sealing gasket is placed on the upper part of the sealing cap top cover.

[0006] The adjusting connecting plate in the sealing cap is connected to the vertical hook via a detachable pin.

[0007] As a preferred embodiment, more than two vertical hooks are provided along the height direction of the outer wall of the vertical tube.

[0008] As a preferred embodiment, the adjustment connecting plate includes a circular ring-shaped bottom, and more than two "L"-shaped connecting parts are evenly arranged on the upper surface of the circular ring-shaped bottom. The short side ends of the "L"-shaped connecting parts are vertically connected to the upper surface of the circular ring-shaped bottom, and the long sides of the "L"-shaped connecting parts are provided with grooves for vertical hook embedding.

[0009] As a preferred embodiment, a connecting chain is connected between the detachable shaft pin and the adjustable connecting plate.

[0010] As a preferred embodiment, two layers of sealing gaskets are provided, with an "X"-shaped opening in the middle of the sealing gaskets; the openings of the two layers of sealing gaskets are arranged at staggered angles to form a "M" shape.

[0011] According to another aspect of the present invention, there is provided an oil gas recovery method, comprising the following steps: Step 1: Install the crane body assembly; Step 2: Install the adjustable crane pipe oil and gas recovery sealing device according to any one of claims 1 to 5 on the vertical pipe of the crane pipe, that is, adjust the sealing cap to the corresponding position according to the tank truck model and connect it to the vertical hook; Step 3: Oil and gas recovery The tank truck is transported to the side of the train trestle platform in the factory via the train track. During operation, the operator pulls the vertical pipe of the crane pipe and lowers it from the train trestle platform through the light drop springboard to the tank truck pipe port of the tank truck. The oil and gas in the tank truck are collected through the gas phase pipeline on the sealing cap top cover and sent to the oil and gas recovery device.

[0012] As a preferred embodiment, the oil and gas recovery gas phase collection pipe adopts a wire mesh flexible connection pipeline, which is laid along the inner arm of the crane pipe, the bottom rotary joint, the outer wall, the top rotary joint, and the vertical pipe, and is fixed to the crane pipe by a steel binding belt. One end is connected to the oil and gas recovery main line in the device area, and the other end is connected to the through hole of the sealing cap top cover, and adjustment margin is left at the sealing cap top cover.

[0013] As a preferred embodiment, in step three, the drain valve of the vertical pipe is opened before placement to prevent the vertical pipe from forming negative pressure; the bottom of the pipe is in contact with the oil collecting tank of the tank truck, the outer arm locking rod of the crane pipe body is locked, the drain valve is closed, and preparation for operation begins.

[0014] The present invention provides an oil and gas recovery sealing device with multiple sets of fixed vertical pipe hooks and movable sealing caps and an oil and gas recovery method, which are suitable for oil and gas recovery in train trestle operations. During operation, the movable sealing part is connected to the vertical pipe hook of the corresponding tank car, and fixed by a detachable axle pin. During operation, the oil and gas are collected through the gas phase pipeline of the sealing cap top cover and sent to the oil and gas recovery device.

[0015] The present invention can be applied to tank trucks of different models, solves the sealing problem between the sealing cap and the pipe opening of the oil tank truck and between the sealing cap top cover and the vertical pipe when tank trucks of different models are performing oil receiving and sending operations, can prevent environmental pollution caused by evaporation loss of operating oil products due to lax sealing, realizes the operation under a closed working condition, ensures the personal safety of operators, eliminates potential safety hazards, improves work efficiency, and has good economic benefits, thereby generating better social benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings herein are used to provide further explanation of the present invention and constitute a part of this application. The illustrative embodiments of the present invention and their description are used to explain the present invention and do not constitute improper limitations on the present invention.

[0017] Figure 1 This is the original crane pipe sealing cap fixing clip picture.

[0018] Figure 2 This is a top view of the original crane pipe sealing cap fixing clamp.

[0019] Figure 3 It is an assembly diagram of the adjustable crane pipe oil and gas recovery sealing device provided by the present invention.

[0020] Figure 4 The present invention is a top view of the sealing cap of the adjustable crane pipe oil and gas recovery sealing device provided by the present invention.

[0021] Figure 5 It is a top view of the adjustment connecting plate of the adjustable crane pipe oil and gas recovery sealing device.

[0022] Figure 6 It is a top view of the sealing gasket of the adjustable crane pipe oil and gas recovery sealing device.

[0023] Figure 7 This is the crane pipe assembly drawing.

[0024] Figure 8 It is a side view of the relative positions of the train trestle during operation.

[0025] Fig. 9 It is a top view of the relative positions of the train trestle during operation.

[0026] In the figure: 1-train trestle platform, 2-train track, 3-tank car, 4-light drop springboard, 5-crane pipe, 6-tank car pipe port, 7-fixed column, 8-fixed shaft, 9-inner arm reinforcement rod, 10-inner arm, 11-spring cylinder, 12-outer arm locking rod, 13-outer arm, 14-drain valve, 15-sealing cap, 16-vertical pipe, 17-submersible oil pump, 18-swivel joint, 19-fixing clamp, 20-first tank car hook, 21-second tank car hook, 22-third tank car hook, 23-fourth tank car hook, 24-sealing cap side wall, 25-sealing cap top cover, 26-adjusting connecting plate, 27-detachable axle pin, 28-sealing pad. DETAILED DESCRIPTION

[0027] In order to make those skilled in the art better understand the present invention, the present invention is further clearly and completely described below in conjunction with the accompanying drawings and embodiments. It should be noted that, in the absence of conflict, the features in the embodiments and examples of this application can be combined with each other.

[0028] like Figure 7 As shown, the crane pipe 5 is composed of a fixed column 7, a fixed shaft 8, an inner arm reinforcement rod 9, an inner arm 10, a spring cylinder 11, an outer arm locking rod 12, an outer arm 13, a drain valve 14, a sealing cap 15, a drop pipe 16, a submersible pump 17, and a rotary joint 18. Figure 1 , 2 As shown, in the prior art, the sealing cap 15 is fixed to a fixed position on the vertical pipe 16 by a fixing clip 19. The sealing cap 15 is fixed and is not suitable for receiving and sending oil of various types of vehicles. The adjustment of the sealing cap is relatively cumbersome and cannot be adjusted in time according to the type of tank truck being operated. In addition, there is a certain gap between the sealing cap and the vertical pipe, resulting in a loose seal.

[0029] Based on the above-mentioned defects existing in the prior art, a typical embodiment of the present invention provides an adjustable crane pipe oil and gas recovery sealing device, including an improved sealing cap 15 and a vertical pipe hook, which serves as a support during oil receiving and sending operations.

[0030] In this embodiment, the vertical hook is fixedly connected or detachably connected to the outer wall of the vertical pipe. Figure 3 As shown, four groups of vertical hooks are provided along the height direction of the outer wall of the vertical pipe 16 as fixing points, namely, the first tank car hook 20, the second tank car hook 21, the third tank car hook 22, and the fourth tank car hook 23, so as to be suitable for tank cars of different models. The vertical pipe hooks are usually made of thicker steel plates to improve their strength.

[0031] like Figure 3 , 4 As shown in FIG. 5 , this embodiment provides a sealing cap 15 , including a sealing cap side wall 24 , a sealing cap top cover 25 , an adjusting connecting plate 26 and a sealing gasket 28 .

[0032] like Figure 3 As shown, the sealing cap side wall 24 is a thin wall of a hollow truncated cone structure. It should be noted that the sealing cap side wall 24 is in an inverted truncated cone shape with a large upper portion and a small lower portion when in use. The sealing cap side wall 24 is provided with a sealing rubber plate, which is in close contact with the oil tank pipe opening.

[0033] like Figure 3 , 4 As shown, the sealing cap top cover 25 is a circular ring plate, whose outer ring edge is connected to the sealing cap side wall 24, and whose inner ring edge has a certain gap with the vertical tube 16 to ensure that the sealing cap 15 does not touch the vertical tube hook when moving up and down.

[0034] like Figure 3 As shown, the adjusting connecting plate 26 is connected to the upper part of the sealing cap top cover 25. In a preferred embodiment, as Figure 3As shown, the adjustment connecting plate 26 includes a circular bottom, and more than two "L"-shaped connecting parts are evenly arranged on the upper surface of the circular bottom. The short side ends of the "L"-shaped connecting parts are vertically connected to the upper surface of the circular bottom, and the long sides of the "L"-shaped connecting parts are provided with grooves for vertical hook embedding.

[0035] like Figure 6 As shown, a circular hole for the vertical pipe 16 to pass through is opened in the middle of the sealing gasket 28, and the sealing gasket 28 is placed on the upper part of the sealing cap top cover 25. The sealing gasket 28 is a circular ring gasket, and the outer edge of the sealing gasket 28 is flush with the outer edge of the circular ring plate at the bottom of the adjusting connecting plate 26, and the inner edge contacts the vertical pipe 16.

[0036] In a preferred embodiment, the inner ring of the sealing cap top cover is sealed by two layers of sealing gaskets 28. Figure 6 As shown, there is an "X"-shaped opening in the middle of the sealing gasket 28; the openings of the two layers of sealing gaskets are arranged at staggered angles to form a "M" shape.

[0037] like Figure 3 , 5 As shown, the adjustment connecting plate 26 in the sealing cap is connected to the vertical hook through a detachable pin 27. A long hole is opened through the long side of the "L"-shaped connecting part of the adjustment connecting plate 26, and a hole is also opened on each vertical hook accordingly. The detachable pin 27 is connected to the above-mentioned long hole and hole.

[0038] like Figure 5 As shown, four "L"-shaped connecting parts are evenly arranged on the circular bottom, and correspondingly, four vertical hooks are arranged at the same height position to be connected to the "L"-shaped connecting parts.

[0039] A connection chain is connected between the detachable shaft pin 27 and the adjustment connecting plate 26 to prevent the detachable shaft pin 27 from falling.

[0040] To dismantle the adjustable crane pipe oil and gas recovery sealing device, first pull out the detachable axle pin 27 connecting the movable connecting plate 26 and its corresponding vertical pipe hooks 20, 21, 22, 23 to disengage the movable connecting mechanism, and then pull out the entire movable sealing part along the vertical pipe 16; it has the characteristics of convenient disassembly and easy assembly.

[0041] Another typical embodiment of the present invention provides an oil and gas recovery method based on the above embodiment, comprising the following steps: Step 1: Install the crane body. Figure 7 shown.

[0042] Step 2: Install an adjustable crane pipe oil and gas recovery sealing device on the vertical pipe 16 of the crane pipe, that is, adjust the sealing cap 15 to the corresponding position according to the tank truck model and connect it to the vertical hook.

[0043] The gas phase collection pipe for oil and gas recovery adopts a wire mesh flexible connection pipeline, which is laid along the inner arm of the crane pipe, the bottom rotary joint, the outer wall, the top rotary joint, and the vertical pipe, and is fixed to the crane pipe by a steel binding belt. One end is connected to the oil and gas recovery main line in the device area, and the other end is connected to the through hole of the sealing cap top cover 25. Adjustment margin is left at the sealing cap top cover 25.

[0044] Step 3: Oil and gas recovery Figure 8 , Fig. 9 They are the side view of the relative position during the operation of the train trestle and the top view of the relative position during the operation of the train trestle. First, the tank car 3 is transported to the side of the train trestle platform 1 in the factory through the train track 2. During the operation, the operator pulls the vertical pipe 16 of the crane pipe 5 from the train trestle platform 1 through the light drop springboard 4 to the tank car pipe port 6 of the tank car 3. The vertical pipe 16 opens the drain valve 14 before placement to prevent the vertical pipe 16 from forming a negative pressure. The bottom of the vertical pipe 16 contacts the oil collecting tank of the tank car 3, locks the outer arm locking rod 12, closes the drain valve 14, and starts to prepare for the operation. When performing the oil receiving and sending operation, the sealing cap 15 is sealed intact, and the oil and gas are collected through the gas phase pipeline of the sealing cap top cover 25 and sent to the oil and gas recovery device.

[0045] The scope of protection claimed by the present invention is not limited to the above specific embodiments. For those skilled in the art, the present invention may have various deformations and changes. Any modifications, improvements and equivalent substitutions made within the concept and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An adjustable crane oil and gas recovery sealing device, including a sealing cap, characterized in that: Also includes drop tube hooks; The vertical hook is fixedly or detachably connected to the outer wall of the vertical pipe; The sealing cap comprises a sealing cap side wall, a sealing cap top cover, an adjusting connecting plate and a sealing gasket; the sealing cap side wall is a thin wall of a hollow truncated cone structure; the sealing cap top cover is a circular ring plate, the outer ring edge of which is connected to the sealing cap side wall; the adjusting connecting plate is connected to the upper part of the sealing cap top cover; a circular hole for the vertical pipe to pass through is opened in the middle of the sealing gasket, and the outer edge of the sealing gasket is placed on the upper part of the sealing cap top cover; The adjusting connecting plate in the sealing cap is connected to the vertical hook via a detachable pin.

2. The adjustable lifting pipe oil and gas recovery sealing device according to claim 1 is characterized in that: More than two vertical hooks are arranged along the height direction of the outer wall of the vertical pipe.

3. The adjustable crane pipe oil and gas recovery sealing device according to claim 1 or 2, characterized in that: The adjustment connecting plate includes a circular ring bottom, and more than two "L"-shaped connecting parts are evenly arranged on the upper surface of the circular ring bottom. The short side ends of the "L"-shaped connecting parts are vertically connected to the upper surface of the circular ring bottom, and the long sides of the "L"-shaped connecting parts are provided with grooves for vertical hook embedding.

4. The adjustable lifting pipe oil and gas recovery sealing device according to claim 3 is characterized in that: A connecting chain is connected between the detachable shaft pin and the adjusting connecting plate.

5. The adjustable crane pipe oil and gas recovery sealing device according to claim 1 or 4, characterized in that: Two layers of sealing gaskets are arranged, and an "×"-shaped opening is arranged in the middle of the sealing gaskets; the openings of the two layers of sealing gaskets are arranged at staggered angles to form a "M" shape.

6. An oil and gas recovery method, characterized in that: The following steps are involved: Step 1: Install the crane body assembly; Step 2: Install the adjustable crane pipe oil and gas recovery sealing device according to any one of claims 1 to 5 on the vertical pipe of the crane pipe, that is, adjust the sealing cap to the corresponding position according to the tank truck model and connect it to the vertical hook; Step 3: Oil and gas recovery The tank truck is transported to the side of the train trestle platform in the factory via the train track. During operation, the operator pulls the vertical pipe of the crane pipe and lowers it from the train trestle platform through the light drop springboard to the tank truck pipe port of the tank truck. The oil and gas in the tank truck are collected through the gas phase pipeline on the sealing cap top cover and sent to the oil and gas recovery device.

7. The oil and gas recovery method according to claim 6, characterized in that: The gas phase collection pipe for oil and gas recovery adopts a wire mesh flexible connection pipeline, which is laid along the inner arm of the crane pipe, the bottom rotary joint, the outer wall, the top rotary joint, and the vertical pipe, and is fixed to the crane pipe by a steel binding belt. One end is connected to the oil and gas recovery main line in the device area, and the other end is connected to the through hole of the sealing cap top cover, and adjustment margin is left at the sealing cap top cover.

8. The oil and gas recovery method according to claim 7, characterized in that: In step three, the drain valve of the vertical pipe is opened before placement to prevent the vertical pipe from forming negative pressure; the bottom of the pipe is in contact with the oil collecting tank of the tank truck, the outer arm locking rod of the crane pipe body is locked, the drain valve is closed, and preparation for operation begins.

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