Grease line visual fixture

Abstract

The application provides a visible fixing device for a grease return pipeline, which comprises a body, a joint and a connecting pipe. The body is a cylindrical structure with a cavity formed inside, a window is formed on the body, a transparent cover is arranged on the window, and the transparent cover is in sealing connection with the window to form a visible window. One end of the joint is in communication with a first end of the body, and the other end is used for fixing the grease return pipeline on the body and making the grease return pipeline in communication with the cavity. One end of the connecting pipe is in communication with a second end of the body, and the other end is used for fixing the body on an oil drum and making the cavity in communication with the oil drum. Compared with the prior art, the visible fixing device for the grease return pipeline can effectively fix the grease return pipeline on the oil drum, avoid the grease return pipeline from swinging in the air when fluid in the well is rapidly sprayed out, and avoid the grease return pipeline from swinging and colliding to generate sparks to ignite natural gas and cause a fire accident. The visible design of the fixing device is beneficial to early discovery of the loss of sealing, beneficial to rapid disposal, and beneficial to ensuring well control safety.

Description

Technical Field

[0001] This invention relates to the field of shale oil and gas development equipment technology, and in particular to a visual fixing device for grease return pipelines. Background Technology

[0002] In recent years, China has vigorously developed shale oil and gas, with cluster perforation and staged fracturing becoming the mainstream technologies. Cluster perforation is also a type of live-line operation, which mainly uses grease injection to achieve dynamic sealing. The grease injection control head must have a grease return port and a grease return pipeline connected to it.

[0003] Since it is a dynamic sealing condition, it is inevitable that the seal will be lost under some special circumstances. When the seal is lost, the earlier it is detected, the better for quick handling and to ensure well control safety.

[0004] In addition, some derivative phenomena can occur when the seal is lost. For example, the reaction force generated when fluid is rapidly ejected from the well causes the return pipeline to swing erratically in the air. If the ejected fluid is pressure return fluid and sealing grease, it will cause environmental pollution; if the ejected fluid is natural gas, the swinging and impact of the return pipeline can easily cause a fire accident. Summary of the Invention

[0005] To address the shortcomings of the prior art, the present invention aims to provide a visual fixing device for grease return lines. Its visual design facilitates early detection of seal failure, and the effective fixing of the grease return lines can prevent the reaction force generated when fluid is rapidly ejected from the well from causing the grease return lines to swing erratically in the air.

[0006] The present invention provides a visual fixing device for grease return lines, comprising:

[0007] The main body has a cylindrical structure with an internal cavity. A window is provided on the main body to connect the outside of the main body and the cavity. A transparent cover is provided on the window, and the transparent cover is sealed to the window to form a viewing window.

[0008] A connector, one end of which communicates with the first end of the body, and the other end of which is used to fix the grease return tube to the body and to communicate the grease return tube with the cavity; and

[0009] A connecting pipe, one end of which is connected to the second end of the main body, and the other end of which is used to fix the main body to the oil drum and to connect the cavity to the oil drum.

[0010] The visual fixing device for the return pipeline effectively secures the return pipeline to the oil drum, preventing it from swinging erratically in the air due to the reaction force generated when fluid rapidly gushes out of the well. If natural gas is gushing out, effective fixing prevents sparks from igniting the gas and causing a fire. Furthermore, the visual design of the return pipeline fixing device facilitates early detection of seal failures. Early detection allows for rapid response and ensures well control safety.

[0011] Preferably, multiple viewing windows are provided, and the multiple viewing windows are distributed along the circumference of the body to facilitate observation of the oil return inside the body from different angles.

[0012] Preferably, the transparent cover is made of plexiglass, which is tough and not easily broken, thus effectively improving the service life of the device.

[0013] Preferably, the spaces inside the connector, the body, and the connecting pipe are sequentially connected to form a fluid channel, and the fluid channel has a thickened section within the body. This thickened section prevents grease return nozzle ejection from the viewing window.

[0014] Preferably, a drainage tube is also provided between the connector and the body, with one end of the drainage tube connected to the connector and the other end connected to the thickened section extending into the body.

[0015] The combination of the drainage tube and the thickened section can better prevent the discharge from the grease return port from spraying onto the viewing window.

[0016] Preferably, the first end of the main body is further provided with a detachable top cover, the top cover having an installation hole, and the connector communicating with the cavity through the installation hole.

[0017] The design incorporates a removable top cover to facilitate cleaning and maintenance of the visible mounting device for the grease return line.

[0018] Preferably, the second end of the main body is further provided with an adapter sleeve, the adapter sleeve having a funnel-shaped structure, the larger end of the adapter sleeve being connected to the main body, and the smaller end of the adapter sleeve being connected to the connecting pipe.

[0019] By setting a funnel-shaped adapter sleeve, it is not only convenient for the sealing grease inside the main body to flow out from the second end of the main body; but also, when other waste oil needs to be poured into the waste grease storage tank, the top cover of the visible fixing device for the grease return pipeline can be opened, and the lower part of the device can be used as a funnel.

[0020] Preferably, the main body is also provided with an exhaust port. When the grease return line discharges a large amount of gas, the air pressure in the waste grease storage tank, the grease return line, and the visible fixing device of the grease return line will rise rapidly.

[0021] By setting up vents to allow gas to escape from the visible fixed device of the grease return line, explosions caused by pressure buildup inside the oil drum, grease return line, and grease return line can be effectively prevented.

[0022] Preferably, the connector is a quick connector, which facilitates the quick connection of the grease return line to the visible fixing device for the grease return line.

[0023] Preferably, the end of the connecting pipe used to connect to the oil drum is provided with an external thread; this allows the visible fixing device of the grease return line to be removed from the oil drum, facilitating the cleaning and maintenance of the visible fixing device of the grease return line.

[0024] Compared with existing technologies, the present invention's visual fixing device for grease return lines solves the problem of grease return line fixing. In use, the device is first connected to the grease storage tank, and then the grease return line is connected to the device's quick connector. Real-time observation of the grease return process and speed allows for timely detection of any sealing failures, enabling the grease injection control console to take immediate emergency measures and ensure well control safety. The device features multiple viewing windows at different angles, made of durable acrylic (plexiglass) for enhanced durability. The device employs a drainage pipe and a thickened body structure, preventing grease spray from the grease return port from hitting the viewing windows and obstructing observation. When other waste oil needs to be poured into the waste grease storage tank, the top cover of the device can be opened, allowing the lower part to be used as a funnel. The device also includes a vent to prevent pressure buildup and potential explosions when large amounts of gas are released from the grease return line.

[0025] The above-mentioned technical features can be combined in various suitable ways or replaced by equivalent technical features, as long as the purpose of the present invention can be achieved. Attached Figure Description

[0026] The invention will now be described in more detail based on embodiments that are merely non-limiting and with reference to the accompanying drawings. Wherein:

[0027] Figure 1 This is a schematic diagram of the structure of a visual fixing device for grease return lines according to an embodiment of the present invention;

[0028] Figure 2 This is a structural diagram of the visible fixing device and oil tank for the grease return pipeline.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1. Connecting pipe;

[0031] 2. Adapter sleeve;

[0032] 3. Ontology;

[0033] 4. Visual window;

[0034] 41. Window;

[0035] 42. Transparent cover;

[0036] 5. Top cover;

[0037] 6. Drainage tube;

[0038] 7. D-type lever quick coupling;

[0039] 8. F-type lever quick coupling;

[0040] 9. Vent hole;

[0041] 10. Oil drums. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below. Based on the specific embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0043] The terms "first," "second," and similar words used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different parts. Words such as "including" or "contains" mean that the element preceding the word encompasses the element listed after it, and do not exclude the possibility of encompassing other elements as well. Terms such as "above," "below," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, this relative positional relationship may also change accordingly.

[0044] In this disclosure, when a specific device is described as being located between a first device and a second device, an intermediary device may or may not be present between the specific device and the first or second device. When a specific device is described as being connected to other devices, the specific device may be directly connected to the other devices without an intermediary device, or it may be not directly connected to the other devices but have an intermediary device.

[0045] All terms used in this disclosure (including technical or scientific terms) have the same meaning as understood by one of ordinary skill in the art to which this disclosure pertains, unless otherwise specifically defined. It should also be understood that terms defined in a general dictionary, such as a dictionary, should be interpreted as having a meaning consistent with their meaning in the context of the relevant art, and not as having an idealized or highly formalized meaning, unless expressly defined herein.

[0046] Example 1

[0047] like Figure 1 , Figure 2 As shown, the visible fixing device for the grease return pipeline includes a connector, a body 3 and a connecting pipe 1 connected in sequence. The internal spaces of the connector, body 3 and connecting pipe 1 are connected in sequence to form a fluid channel.

[0048] The main body 3 has a cylindrical structure, including a first end and a second end, and a cavity is formed inside the main body 3. A window 41 is opened on the side wall of the main body 3, and the window 41 connects the external space of the main body 3 and the cavity inside the main body 3. A transparent cover 42 is provided on the window 41, and the transparent cover 42 is sealed to the window 41 to form a viewing window 4. In order to facilitate observation of the grease return inside the main body 3 from different angles, multiple viewing windows 4 can be provided on the main body 3, preferably the multiple viewing windows 4 are evenly distributed along the circumference of the main body 3. The transparent cover 42 is made of transparent material, preferably made of plexiglass, which is tough and not easy to break.

[0049] The connector is used to connect the body 3 and the grease return line (not shown in the figure). One end of the connector connects to the first end of the body 3, and the other end is used to fix the grease return line to the body 3. The grease return line communicates with the cavity inside the body 3 through the internal space of the connector. A quick-connect connector is preferred, allowing the grease return line to be quickly connected to a visible fixing device. Figure 1 As shown, the quick coupling includes an F-type lever quick coupling 8 and a D-type lever quick coupling 7 that are connected to each other.

[0050] The connecting pipe 1 is used to connect the main body 3 and the oil drum 10. One end of the connecting pipe 1 is connected to the second end of the main body 3, and the other end of the connecting pipe 1 is used to fix the main body 3 to the oil drum 10. The cavity inside the main body 3 communicates with the oil drum 10 through the internal space of the connecting pipe 1. Preferably, the end of the connecting pipe 1 used to connect to the oil drum 10 is provided with an external thread, and the connecting pipe 1 and the oil drum 10 are connected by a thread, so that the visible fixing device of the grease return pipeline can be removed from the oil drum 10, which facilitates the cleaning and maintenance of the visible fixing device of the grease return pipeline.

[0051] The visual fixing device for the return pipeline effectively secures the return pipeline to the oil drum 10, preventing it from swinging erratically in the air due to the reaction force generated when fluid rapidly gushes out of the well. If natural gas is ejected, effective fixing prevents sparks from igniting the gas and causing a fire. Furthermore, the visual design of the return pipeline fixing device facilitates early detection of seal failure; earlier detection allows for faster response and ensures well control safety.

[0052] Example 2

[0053] Based on Example 1, an optimization is made so that the fluid channel formed by the sequential connection of the internal spaces of the connector, body 3, and connecting pipe 1 has a thickened section within the body 3. This thickened section prevents the ejected material from the grease return port from spraying onto the viewing window 4. Specifically, the body 3 is designed as a straight cylindrical structure, with a cylindrical cavity formed inside; at the first end of the body 3 (i.e.... Figure 1 The top of the main body 3 is also provided with a detachable top cover 5, which can be closed onto the main body 3. The top cover 5 has a mounting hole, through which the connector communicates with the cavity. Both the connector and the connecting pipe 1 are designed with a structure that forms a cylindrical space inside. The diameter of the cylindrical cavity inside the main body 3 is larger than the diameter of the cylindrical space inside the connector. In this case, the cylindrical cavity inside the main body 3 is the thickened section of the fluid channel.

[0054] When a large amount of gas is discharged from the grease return line, the air pressure inside the waste grease storage tank, the grease return line, and the visible fixing device of the grease return line will rise rapidly. To prevent an explosion caused by pressure buildup inside the oil tank, the grease return line, and the visible fixing device of the grease return line, an exhaust port 9 can be designed on the visible fixing device of the grease return line; multiple exhaust ports 9 can be provided. Preferably, the exhaust port 9 is provided on the main body 3; more preferably, the exhaust port is provided on the top cover 5; when multiple exhaust ports 9 are provided, the multiple exhaust ports 9 are evenly distributed around the mounting holes on the top cover 5.

[0055] Example 3

[0056] Further optimizations can be made based on Embodiment 2. A drainage tube 6 is added between the connector and the body 3. One end of the drainage tube 6 is connected to the connector, and the other end of the drainage tube 6 is connected to the thickened section extending into the space inside the body 3. The cooperation between the drainage tube 6 and the thickened section can better prevent the grease return port from spraying onto the viewing window 4.

[0057] Example 4

[0058] Based on Example 1, an optimization is made so that the fluid channel formed by sequentially connecting the internal spaces of the connector, body 3, and connecting pipe 1 has a thickened section within the body 3. Specifically, the body 3 is designed as a variable-diameter cylindrical structure with a variable-diameter cylindrical cavity inside. The diameters at both ends of the variable-diameter cylindrical cavity are small, while the diameter in the middle is large. The large-diameter section of the cavity in the middle of the body 3 is the thickened section of the fluid channel.

[0059] Example 5

[0060] Further optimizations can be made based on Embodiment 4. A drainage tube 6 is added between the connector and the body 3. One end of the drainage tube 6 is connected to the connector, and the other end of the drainage tube 6 is connected to the thickened section extending into the space inside the body 3. The cooperation between the drainage tube 6 and the thickened section can better prevent the ejected material from the grease return port from spraying onto the viewing window 4.

[0061] Example 6

[0062] Based on Embodiments 1 to 3, an adapter sleeve 2 is added to the second end of the main body 3. The adapter sleeve 2 has a funnel-shaped structure. The large-diameter end of the adapter sleeve 2 is connected to the main body 3, and the small-diameter end of the adapter sleeve 2 is connected to the connecting pipe 1. The adapter sleeve 2 can be designed as an integral part of the main body 3, or it can be designed as an independent component and then connected to the second end of the main body 3 by welding or threaded connection.

[0063] The funnel-shaped adapter sleeve 2 not only facilitates the flow of sealing grease from the second end of the main body 3, but also allows the top cover 5 of the visible fixing device for the grease return pipeline to be opened when other waste oil needs to be poured into the waste grease storage tank. The lower part of this device can be used as a funnel.

[0064] Finally, it should be noted that the above embodiments and examples are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments and examples, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments or examples, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments or examples of the present invention.

Claims

1. A visual fixing device for grease return lines, characterized in that, include: The main body has a cylindrical structure with an internal cavity. A window is provided on the main body, which connects the outside of the main body and the cavity. A transparent cover is provided on the window, and the transparent cover is sealed to the window to form a viewing window. Multiple viewing windows are provided and distributed along the circumference of the main body. A connector, one end of which is connected to the first end of the body, and the other end of which is used to fix the grease return line to the body and to connect the grease return line to the cavity; and A connecting pipe, one end of which is connected to the second end of the main body, and the other end of which is used to fix the main body to the oil drum and to connect the cavity to the oil drum; The spaces inside the connector, the body, and the connecting pipe are connected in sequence to form a fluid channel. The fluid channel has a thickened section inside the body. The body is a variable-diameter cylindrical structure with a variable-diameter cylindrical cavity inside. The diameters at both ends of the variable-diameter cylindrical cavity are small, while the diameter in the middle is large. The large-diameter section of the cavity in the middle of the body is the thickened section of the fluid channel. A drainage tube is also provided between the connector and the body. One end of the drainage tube is connected to the connector, and the other end is connected to the thickened section extending into the body. The first end of the main body is also provided with a detachable top cover, on which an installation hole is provided, and the connector communicates with the cavity through the installation hole; the second end of the main body is also provided with an adapter sleeve, which has a funnel-shaped structure, with the larger diameter end of the adapter sleeve communicating with the main body and the smaller diameter end of the adapter sleeve communicating with the connecting pipe; the main body is also provided with an exhaust hole.

2. The visual fixing device for grease return lines according to claim 1, characterized in that, The transparent cover is made of plexiglass.

3. The visual fixing device for grease return lines according to claim 1, characterized in that, The connector is a quick connector.

4. The visual fixing device for grease return lines according to claim 1, characterized in that, The end of the connecting pipe used to connect to the oil drum is provided with an external thread.

Images