Oil field pipeline conveying safety valve

Abstract

The utility model discloses an oil field pipeline conveying safety valve, which belongs to the technical field of safety valves and comprises a first outer shell and a third outer shell which form the oil field pipeline conveying safety valve, a second power device is mounted on the upper side of the third outer shell, and the output end of the second power device is fixedly connected with a third connecting block. The end, away from the second power device, of the third connecting block is fixedly connected with a second blocking valve in sliding connection with the third outer shell, the side edge of the second blocking valve is rotationally connected with a connecting plate, the side edge of the connecting plate is rotationally connected with a rotating shaft, and the end, away from the second blocking valve, of the connecting plate is rotationally connected with a fixing plate. According to the device, after a first blocking valve blocks an oil field conveying pipe body, a second power device drives a second connecting block to move, drives a second blocking valve to move, drives the angle of a connecting plate to change and drives a fixing plate and a clamping plug to move, and petroleum is conveniently conveyed into a collecting box.

Description

Technical Field

[0001] The utility model belongs to the technical field of safety valves, in particular to an oil field pipeline transportation safety valve. Background Art

[0002] With the development of my country's economy, the demand for oil and natural gas has increased dramatically. Pipeline transportation, as the main mode of transportation of oil and natural gas, plays an increasingly important role. In the process of pipeline transportation of petrochemicals, if a fire or other abnormal situation occurs in a transportation pipeline, the passage of oil in the pipeline must be cut off quickly and in time to avoid fire accidents and leakage accidents, otherwise there will be great safety hazards.

[0003] The current oilfield pipeline transportation safety valve, when cutting off, cuts off the oil on one side, but still has oil on the other side. If the situation is serious, there is a probability that it will affect the oil on the other side, posing a safety hazard.

[0004] For example, a Chinese patent document (application announcement number CN109595375B) of the prior art discloses a safety valve for oil field pipeline transportation, which can promptly cut off the oil passage in the pipeline in case of fire to ensure the safety of the pipeline. However, the prior art has the following problem: when cutting off, the oil is cut off on one side, but there is still oil on the other side. If the situation is serious, there is a probability that the oil on the other side will be affected, which poses a safety hazard.

[0005] Therefore, in view of this situation, it is urgent to design and produce an oilfield pipeline transportation safety valve to meet the needs of actual use. Utility Model Content

[0006] The utility model aims to provide an oilfield pipeline transportation safety valve to solve the problems raised in the background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an oilfield pipeline transportation safety valve, comprising a first outer shell and a third outer shell constituting the oilfield pipeline transportation safety valve, a second power device is installed on the upper side of the third outer shell, an output end of the second power device is fixedly connected to a third connecting block, an end of the third connecting block away from the second power device is fixedly connected to a second blocking valve slidably connected to the third outer shell, a side of the second blocking valve is rotatably connected to a connecting plate, a side of the connecting plate is rotatably connected to a rotating shaft, and an end of the connecting plate away from the second blocking valve is rotatably connected to a fixed plate.

[0008] Preferably, a plug is fixedly connected to the side of the fixing plate.

[0009] Preferably, sliding plates fixedly connected to the third outer shell are slidably connected to both sides of the plug, and an oil pipeline is connected to the bottom side of the third outer shell.

[0010] Preferably, one end of the oil pipeline away from the third outer shell is connected to the oil collection box, and the side of the third outer shell is fixedly connected to the oilfield pipeline body.

[0011] Preferably, a first power device is installed on the upper side of the first outer shell, an output end of the first power device is fixedly connected to a first connecting block, and a return spring is welded on the upper side of the first connecting block.

[0012] Preferably, the bottom side of the first connecting block is fixedly connected to the second connecting block, the bottom side of the second connecting block is fixedly connected to the first blocking valve used as an oilfield pipeline transportation safety valve, and the side of the first blocking valve is slidably connected to the second outer shell.

[0013] Preferably, a compressed gas tank is fixedly connected to the upper side of the first connecting block, and an outlet pipe of the compressed gas tank is connected to the first gas supply pipe.

[0014] Preferably, a second gas pipe is connected to the side of the first outer shell.

[0015] Compared with the prior art, the technical effects and advantages of the utility model are as follows:

[0016] The oilfield pipeline transportation safety valve, after the first blocking valve blocks the oilfield transportation pipe body, drives the second connection block to move through the second power device, drives the second blocking valve to move, drives the angle of the connection plate to change, drives the fixed plate and the plug to move, and facilitates the transportation of oil to the inside of the collection box. The oil on both sides of the safety valve can be transported to other collection boxes, and the two sides of the safety valve are emptied to avoid the existence of oil on one side, which causes certain adverse effects and potential safety hazards.

[0017] After the oil is collected, the air pump of the compressed gas tank is started to transport the carbon dioxide in the air pump to the oil field pipeline body, filling the oil field pipeline body with carbon dioxide, reducing the occurrence of fire and enhancing safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods 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 It is a schematic diagram of the structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the structure inside the first outer shell of the utility model;

[0021] Figure 3 This is a schematic diagram of the structure inside the third outer shell of the utility model;

[0022] Figure 4 It is a structural schematic diagram of the fixing plate of the utility model.

[0023] Description of reference numerals:

[0024] In the figure: 1. first power device; 2. first outer shell; 3. second outer shell; 4. second power device; 5. third outer shell; 6. return spring; 7. compressed gas tank; 8. first connecting block; 9. first gas pipeline; 10. second connecting block; 11. first blocking valve; 12. oil field pipeline body; 13. oil pipeline; 14. collecting box; 15. third connecting block; 16. second blocking valve; 17. rotating shaft; 18. connecting plate; 19. sliding plate; 20. plug; 21. second gas pipeline; 22. fixing plate. DETAILED DESCRIPTION

[0025] In the following description, a large number of specific details are given to provide a more thorough understanding of the utility model. However, it is obvious to those skilled in the art that the utility model can be implemented without one or more of these details. In other examples, in order to avoid confusion with the utility model, some technical features known in the art are not described.

[0026] Unless otherwise defined, the directions of up, down, left, right, front, back, inside and outside involved in this document are based on the directions of up, down, left, right, front, back, inside and outside in the figures shown in the present utility model, and are explained here together.

[0027] The connection method can be bonding, welding, bolt connection, etc., depending on actual needs.

[0028] In order to solve the problem that when cutting off, oil is cut off on one side, but oil still exists on the other side, if the situation is serious, it is likely to affect the oil on the other side, posing a safety hazard, such as Figures 1 to 4The oilfield pipeline transportation safety valve shown in the figure comprises a first outer shell 2 and a third outer shell 5 constituting the oilfield pipeline transportation safety valve, a second power device 4 is installed on the upper side of the third outer shell 5, an output end of the second power device 4 is fixedly connected to a third connecting block 15, an end of the third connecting block 15 away from the second power device 4 is fixedly connected to a second blocking valve 16 slidably connected to the third outer shell 5, the second blocking valve 16 is semi-cylindrical, a connecting plate 18 is rotatably connected to the side of the second blocking valve 16, both sides of the connecting plate 18 are fixedly connected to a blocking shaft 17, and the other end of the blocking shaft 17 is rotatably connected to the inside of the third outer shell 5, and a sliding groove is provided on the side of the sliding plate 19 , convenient for sliding connection with the fixed plate 22, T-shaped sliders are provided on both sides of the fixed plate 22, and a groove is provided on the lower side of the sliding plate 19, which is convenient for connection with the oil pipeline 13. A pump is provided at the end of the oil pipeline 13, and the interior of the collecting box 14 is vacuum-shaped. The side of the connecting plate 18 is rotatably connected with the rotating shaft 17, and the end of the connecting plate 18 away from the second blocking valve 16 is rotatably connected with the fixed plate 22, and the side of the fixed plate 22 is fixedly connected with a plug 20, and the two sides of the plug 20 are slidably connected with sliding plates 19 fixedly connected to the third outer shell 5, and grooves are provided on the sides of the sliding plate 19, which are convenient for transporting oil, and the bottom side of the third outer shell 5 is connected with the oil pipeline 13.

[0029] The end of the oil pipeline 13 away from the third outer shell 5 is connected to the oil collection box 14, the side of the third outer shell 5 is fixedly connected to the oil field pipeline body 12, the upper side of the first outer shell 2 is installed with the first power device 1, the output end of the first power device 1 is fixedly connected to the first connecting block 8, the upper side of the first connecting block 8 is welded with a return spring 6, the side of the first connecting block 8 is provided with a vent hole, and the vent is connected to the first gas pipeline 9, the first connecting block 8 and the first blocking valve 11 are fitted with the inside of the first outer shell 2, the bottom side of the first connecting block 8 is fixedly connected to the second connecting block 10, and the bottom side of the second connecting block 10 is fixedly connected to the first blocking valve used as an oil field pipeline transportation safety valve Valve 11, the side of the first blocking valve 11 is slidably connected to the second outer shell 3, the second outer shell 3 and the first outer shell 2 are fixedly connected, the upper side of the first connecting block 8 is fixedly connected to the compressed gas tank 7, and carbon dioxide is arranged inside the compressed gas tank 7. When the first connecting block 8 moves, the side vent is connected to the second gas pipe 21, and the air pump on the side of the compressed gas tank 7 is started to transport the carbon dioxide in the compressed gas tank 7 through the first gas pipe 9, and the carbon dioxide is transported to the inside of the oilfield transmission pipe body 12, the air outlet pipe of the compressed gas tank 7 is connected to the first gas pipe 9, and the end of the first gas pipe 9 is provided with an air pump, and the side of the first outer shell 2 is connected to the second gas pipe 21.

[0030] All structures and instruments are heat-resistant and waterproof.

[0031] The first power device 1 and the second power device 4 are both conventional instruments. The working principle, size and model are irrelevant to the function of the present application, so they are not described in detail. They are both controlled by a remote control switch. The control circuit of the controller can be realized by simple programming by technicians in this field. The provision of power is also common knowledge in this field. The present utility model is mainly used to protect mechanical devices, so the present utility model will no longer explain the control method and circuit connection in detail.

[0032] How it works

[0033] The oilfield pipeline transportation safety valve is used by starting the first power device 1 to drive the first connection block 8 to move, and the movement of the first connection block 8 drives the second connection block 10 and the first blocking valve 11 to move, so as to cut off the oilfield transportation pipe body 12. When the first power device 1 is started, the second power device 4 is started at the same time to drive the third connection block 15 to move, and the movement of the third connection block 15 drives the second blocking valve 16 to move, so as to cut off the oilfield transportation pipe body 12. The movement of the second blocking valve 16 drives the angle of the connecting plate 18 to change, drives the fixed plate 22 to slide and connect inside the sliding plate 19, drives the plug 20 to move up through the movement of the fixed plate 22, and then starts the oil pipeline 13 to transport the oil at the cut-off part to the collecting box 14. When the first connection block 8 moves, the side vent is connected to the second gas pipeline 21, and the air pump on the side of the compressed gas tank 7 is started to transport the carbon dioxide in the compressed gas tank 7 through the first gas pipeline 9, so as to transport the carbon dioxide to the inside of the oilfield transportation pipe body 12.

[0034] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0035] Secondly: In the drawings of the embodiments disclosed in the present utility model, only the structures related to the embodiments disclosed in the present utility model are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0036] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

Claims

1. An oilfield pipeline transportation safety valve, comprising a first outer shell (2) and a third outer shell (5) constituting the oilfield pipeline transportation safety valve, characterized in that: A second power device (4) is installed on the upper side of the third outer shell (5); an output end of the second power device (4) is fixedly connected to a third connecting block (15); an end of the third connecting block (15) away from the second power device (4) is fixedly connected to a second blocking valve (16) slidably connected to the third outer shell (5); a side edge of the second blocking valve (16) is rotatably connected to a connecting plate (18); a side edge of the connecting plate (18) is rotatably connected to a rotating shaft (17); and an end of the connecting plate (18) away from the second blocking valve (16) is rotatably connected to a fixed plate (22).

2. The oilfield pipeline transportation safety valve according to claim 1, characterized in that: A plug (20) is fixedly connected to the side of the fixing plate (22).

3. The oilfield pipeline transportation safety valve according to claim 2, characterized in that: The two sides of the plug (20) are slidably connected to sliding plates (19) fixedly connected to the third outer shell (5), and the bottom side of the third outer shell (5) is connected to an oil delivery pipe (13).

4. The oilfield pipeline transportation safety valve according to claim 3 is characterized by: One end of the oil delivery pipe (13) away from the third outer shell (5) is connected to an oil collection box (14), and the side of the third outer shell (5) is fixedly connected to an oilfield delivery pipe body (12).

5. The oilfield pipeline transportation safety valve according to claim 4, characterized in that: A first power device (1) is installed on the upper side of the first outer shell (2); a first connecting block (8) is fixedly connected to the output end of the first power device (1); and a return spring (6) is welded to the upper side of the first connecting block (8).

6. The oilfield pipeline transportation safety valve according to claim 5, characterized in that: The bottom side of the first connection block (8) is fixedly connected to a second connection block (10), the bottom side of the second connection block (10) is fixedly connected to a first blocking valve (11) used as an oilfield pipeline transportation safety valve, and the side of the first blocking valve (11) is slidably connected to a second outer shell (3).

7. The oilfield pipeline transportation safety valve according to claim 6, characterized in that: A compressed gas tank (7) is fixedly connected to the upper side of the first connecting block (8), and an air outlet pipe of the compressed gas tank (7) is connected to a first air delivery pipe (9).

8. The oilfield pipeline transportation safety valve according to claim 7, characterized in that: A second air delivery pipe (21) is connected to the side of the first outer shell (2).

Images