A tubing make-up connector boot

By designing a protective cover for the quick-connect oil pipe coupling, the problems of cumbersome installation and oil splashing of the DC type quick coupling were solved, enabling quick connection and safe disassembly, and avoiding oil leakage and environmental pollution.

CN224469943UActive Publication Date: 2026-07-07THREE GORGES JINSHAJIANG CHUANYUN HYDROPOWER DEV CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
THREE GORGES JINSHAJIANG CHUANYUN HYDROPOWER DEV CO LTD
Filing Date
2025-09-16
Publication Date
2026-07-07

AI Technical Summary

Technical Problem

Existing DC-type quick couplings for oil pipe quick-connect couplings are cumbersome to install, prone to sealing failure and oil leakage, and may cause oil splashing during disassembly, posing a safety hazard.

Method used

Design a quick-connect protective cover for oil pipes, including a cover body and a boss structure. The cover body is provided with an assembly gap and an oil collection area. Through the quick connection and deformation capability of the cover body and the male connector, oil leakage and splashing are prevented.

Benefits of technology

It achieves fast and stable connection, simplifies the loading and unloading process, avoids oil leakage and splashing, and ensures safe use and environmental protection.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224469943U_ABST
    Figure CN224469943U_ABST
Patent Text Reader

Abstract

The utility model discloses a kind of oil pipe quick-mounting type joint protective cover, belong to oil pipe joint technical field, including cover body;The cover body is the cylinder body of upper end open and lower end closed, and the hollow inside of cover body;The circumferential wall inner diameter size of cover body is greater than the maximum outer diameter size in quick-mounting type joint male head;The boss structure is equipped on the inner wall of cover body;The boss structure is used to cooperate with male head, and cover body can be detachably assembled on male head;Several vertical downward assembly gaps are further provided in the top end of cover body;Several assembly gaps are evenly distributed along the circumferential direction of cover body;The length of assembly gap is lower than the total length of cover body, so that oil collection area is formed in the inside of cover body bottom.The utility model can make protective cover quickly assembled in place, greatly reduce the time of loading and unloading, and can guarantee use safety.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This utility model belongs to the field of oil pipe joint technology, specifically relating to a protective cover for a quick-connect oil pipe joint. Background Technology

[0002] Inside power plant buildings, numerous oil pipelines are typically laid out to meet the lubrication and cooling needs of various equipment such as steam turbines and generators. These oil pipelines include multiple dedicated branches that transport different types of oil, such as lubricating oil and fuel oil, providing targeted oil supply to the corresponding equipment. To facilitate quick connection with oil pumps, these oil pipelines are generally equipped with quick-connect couplings at their ends. These couplings consist of two mating parts, a female and a male, allowing for rapid connection or disconnection between the pipeline and the oil pump.

[0003] When oil is needed to supply oil to equipment via pipelines, the male end of the quick-connect coupling is connected to the oil pump. When oil supply is not required and the pipeline is idle, the male end of the quick-connect coupling is exposed. To prevent external dust and impurities from corroding the quick-connect coupling, and to prevent residual oil in the pipeline from leaking and polluting the environment, a DC-type quick coupling is usually installed over the male end. This serves two purposes: firstly, it isolates external contaminants; secondly, the DC-type quick coupling has an internal cavity that can collect any small amount of oil seepage from the pipeline, preventing oil from dripping directly onto the ground or equipment surface and reducing pollution to the factory environment.

[0004] However, existing DC-type quick couplings have significant drawbacks in practical applications. Firstly, the internal sealing ring and external handle of the DC-type quick coupling not only make installation cumbersome but also increase the risk of seal failure due to improper installation, leading to oil leakage. Secondly, even if the DC-type quick coupling is installed and sealed correctly, prolonged exposure to pressure on the male connector can cause pressure buildup at the end of the oil pipe. This pressure buildup can lead to sudden oil splashing and injury when the DC-type quick coupling is disassembled, threatening worker safety. Furthermore, the manual disassembly and reassembly of the DC-type quick coupling using the handle increases the risk of hand injuries such as pinching and scratching due to improper operation, posing a mechanical injury hazard. Therefore, there is an urgent need for a protective cover for quick-connect oil pipe couplings that can solve these problems. Utility Model Content

[0005] The purpose of this utility model is to provide a quick-connect protective cover for oil pipes, addressing the aforementioned shortcomings. This aims to solve problems such as oil leakage due to improper assembly when assembling oil pipes with DC-type quick connectors, and oil splashing during disassembly after long-term coverage. To achieve the above objective, this utility model provides the following technical solution:

[0006] A protective cover for a quick-connect oil pipe connector includes a cover body; the cover body is a cylindrical body with an open upper end and a closed lower end, and the interior of the cover body is hollow; the inner diameter of the circumferential wall of the cover body is larger than the maximum outer diameter of the male connector in the quick-connect connector; a boss structure is provided on the inner circumferential wall of the cover body; the boss structure is used to mate with the male connector to detachably assemble the cover body onto the male connector; the top of the cover body also has several vertically downward assembly gaps; the several assembly gaps are evenly distributed along the circumference of the cover body; the length of the assembly gaps is less than the total length of the cover body, so that an oil collection area is formed on the inner side of the bottom of the cover body.

[0007] Furthermore, the boss structure is an annular protrusion; the annular protrusion is coaxially arranged with the cover body, and the annular protrusion protrudes radially into the inner side of the cover body; the annular protrusion is used to engage with the annular groove on the male head for snap-fit.

[0008] Furthermore, the cross-sectional shape of the boss structure is arc-shaped.

[0009] Furthermore, the cross-sectional shape of the boss structure is semi-circular.

[0010] Furthermore, the width of the assembly gap is between 1mm and 2mm.

[0011] Furthermore, the assembly gaps are two or four.

[0012] Furthermore, the length of the assembly gap is between one-third and one-half of the total length of the cover.

[0013] Furthermore, the circumferential wall thickness of the cover is set between 2mm and 5mm.

[0014] The beneficial effects of this utility model are:

[0015] 1. This utility model achieves quick connection between the protective cover and the male head by setting a boss structure, without the need for additional structural settings. This not only simplifies the overall structure and greatly reduces the time required for loading and unloading, but also makes it easy to assemble. Furthermore, by setting an oil collection area, oil can be collected to prevent oil from overflowing and polluting the factory environment.

[0016] 2. By setting assembly gaps, this utility model enables the cover to deform, which can compensate for dimensional deviations during disassembly and assembly, and improve the smoothness of disassembly and assembly of the protective cover; at the same time, setting assembly gaps can also ensure that pressure cavities are not formed inside the oil pipe, effectively preventing oil splashing when the cover is disassembled after long-term use, and ensuring safety in use. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0018] Figure 2This is a schematic diagram of the structure of the cover and the male head in this utility model;

[0019] In the attached diagram: 1. Cover; 2. Boss structure; 3. Assembly gap; 4. Male end; 5. Oil collection area. Detailed Implementation

[0020] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0021] In the description of this utility model, "first feature" and "second feature" may include one or more of the features.

[0022] In the description of this utility model, "multiple" means two or more.

[0023] In the description of this utility model, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or it may include the first and second features not being in direct contact but being in contact through another feature between them.

[0024] In the description of this utility model, the terms "above", "over" and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicate that the first feature is at a higher horizontal level than the second feature.

[0025] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," and "some examples" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0026] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments, but the present invention is not limited to the following embodiments.

[0027] Example 1:

[0028] See attached Figures 1-2 A protective cover for a quick-connect oil pipe connector includes a cover body 1; the cover body 1 is a cylindrical body with an open upper end and a closed lower end, and the interior of the cover body 1 is hollow; the inner diameter of the circumferential wall of the cover body 1 is larger than the maximum outer diameter of the male connector 4 in the quick-connect connector; a boss structure 2 is provided on the inner circumferential wall of the cover body 1; the boss structure 2 is used to cooperate with the male connector 4 to detachably assemble the cover body 1 onto the male connector 4; the top of the cover body 1 also has several vertically downward assembly gaps 3; the several assembly gaps 3 are evenly distributed along the circumference of the cover body 1; the length of the assembly gaps 3 is less than the total length of the cover body 1, so that an oil collection area 5 is formed on the inner side of the bottom of the cover body 1. As can be seen from the above structure, the end of the oil pipe is generally vertically installed in the factory building. Therefore, the cover 1 is designed as a cylindrical structure with an open top and a closed bottom, and its interior is hollow. This allows the cover 1 to be assembled under the male connector 4 of the quick-connect fitting through the open part, and after assembly, there is still a certain amount of space inside the cover 1. Furthermore, to accommodate the size of the male connector 4, the inner diameter of the circumferential wall of the cover 1 is larger than the maximum outer diameter of the male connector 4, ensuring that the cover 1 can smoothly cover the male connector 4. The inner circumferential wall of the cover 1 is provided with a boss structure 2, which is used to cooperate with the recessed structure on the male connector 4, so that it can be quickly assembled into place. This allows the cover 1 to be detachably assembled onto the male connector 4, which not only simplifies the overall structure of the protective cover, but also shortens the assembly time while ensuring proper assembly. Furthermore, the top of the cover 1 is provided with several assembly gaps 3. These gaps 3 are mainly used to provide a certain deformation capacity for the cover 1 when it is assembled onto or disassembled from the male connector 4, thereby compensating for dimensional deviations during assembly and disassembly, making the assembly and disassembly of the protective cover smoother. Simultaneously, after the cover 1 is assembled onto the male connector 4, the assembly gaps 3, which allow for outward pressure relief, prevent the gradual formation of a pressure chamber inside the oil pipe, effectively avoiding oil splashing when disassembling the cover 1 after long-term use, ensuring safe operation. The assembly gaps 3 extend vertically from top to bottom and do not extend to the bottom of the cover 1, allowing a closed oil collection area 5 at the bottom of the cover 1. Through the oil collection area 5, the small amount of oil leaking downwards from the end of the oil pipe can be collected, preventing direct oil spillage and pollution of the factory environment. Subsequently, staff can periodically collect and process the oil in the oil collection area 5. Depending on the leakage situation of different oil pipes, the interval for collecting the oil from the cover 1 is generally set between one month and six months.

[0029] Example 2:

[0030] See attached Figures 1-2Based on Embodiment 1, the boss structure 2 is an annular protrusion; the annular protrusion is coaxially arranged with the cover 1, and the annular protrusion protrudes radially inward towards the inside of the cover 1; the annular protrusion is used to engage with the annular groove on the male connector 4 for locking. From the above structure, it can be seen that the boss structure 2 is an annular protrusion, which protrudes radially inward towards the inside of the cover 1, forming a continuous and uniform protrusion structure, the shape of which corresponds to the pre-set annular groove on the outer periphery of the male connector 4. According to the attached... Figure 2 As shown, when assembling the cover 1 with the vertically positioned male connector 4, the operator only needs to align the opening at the top of the cover 1 with the top of the male connector 4 and slide it upwards. This allows the annular protrusion inside the cover 1 to engage with the annular groove on the outer peripheral wall of the male connector 4, thus stably attaching the protective cover to the male connector 4. This installation method does not require the assistance of bolts, clips, or other additional fixing components, making installation quick and stable.

[0031] The cross-sectional shape of the boss structure 2 is arc-shaped. As can be seen from the above structure, when the annular groove on the outer peripheral wall of the male head 4 is also a horizontally inwardly concave arc shape, the cross-sectional shape of the boss structure 2 can be set as a horizontally inwardly protruding arc shape to facilitate mutual matching.

[0032] The cross-sectional shape of the boss structure 2 is semi-circular. As can be seen from the above structure, when the annular groove on the outer peripheral wall of the male head 4 is also a horizontally inwardly recessed semi-circle, the cross-sectional shape of the boss structure 2 is a horizontally inwardly protruding semi-circle, so as to facilitate mutual mating.

[0033] Preferably, the cross-sectional shape of the boss structure 2 can also be adapted to the annular groove of the male head 4 to be connected according to actual needs, such as triangle, trapezoid, etc.

[0034] Example 3:

[0035] See attached Figures 1-2 Based on Embodiment 2, the width of the assembly gap 3 is between 1mm and 2mm. As can be seen from the above structure, setting the width of the assembly gap 3 between 1mm and 2mm provides sufficient elastic deformation space for the assembly of the cover 1 and the male connector 4, while preventing the cover 1 from loosening after assembly due to an excessively wide gap, thus ensuring connection stability.

[0036] The assembly gap 3 can be two or four. As can be seen from the above structure, according to the deformation requirements required when the cover 1 is disassembled and assembled, the assembly gap 3 can be set to two or four to ensure that the opening at the upper end of the cover 1 has sufficient deformation capacity to be assembled with the male head 4 during the disassembly and assembly process, and to prevent the number of assembly gaps 3 from being too large, which would result in insufficient structural strength of the opening and deformation.

[0037] The length of the assembly gap 3 is between one-third and one-half of the total length of the cover 1. As can be seen from the above structure, the length of the assembly gap 3 is set so that, while ensuring the deformation capability of the open part at the upper end of the cover 1, a cylindrical oil collection area 5 can be formed at the bottom inside the cover 1 to collect oil.

[0038] The thickness of the circumferential wall of the cover 1 is set between 2mm and 5mm. As can be seen from the above structure, setting the thickness of the circumferential wall of the cover 1 between 2mm and 5mm avoids the situation where the strength of the cover 1 is too low due to the circumferential wall being too thin, making it susceptible to deformation due to impact, and also prevents the situation where the deformation capacity of the cover 1 is reduced due to the wall being too thick, making it difficult to assemble. At the same time, it ensures the structural strength and deformation capacity of the cover 1 itself.

[0039] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural or procedural transformations made based on the content of the present utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present utility model.

Claims

1. A protective cover for a quick-connect oil pipe joint, characterized in that: Includes a cover (1); the cover (1) is a cylindrical body with an open top and a closed bottom, and the inside of the cover (1) is hollow; the inner diameter of the circumferential wall of the cover (1) is larger than the maximum outer diameter of the male head (4) in the quick-connect connector; a boss structure (2) is provided on the inner circumferential wall of the cover (1); the boss structure (2) is used to cooperate with the male head (4) to detachably assemble the cover (1) onto the male head (4); the top of the cover (1) is also provided with several vertically downward assembly gaps (3); the several assembly gaps (3) are evenly distributed along the circumference of the cover (1); the length of the assembly gaps (3) is less than the total length of the cover (1), so that an oil collection area (5) is formed on the inner side of the bottom of the cover (1).

2. The protective cover for quick-connect tubing couplings according to claim 1, characterized in that: The boss structure (2) is an annular protrusion; the annular protrusion is coaxially arranged with the cover (1), and the annular protrusion protrudes radially toward the inside of the cover (1); the annular protrusion is used to engage with the annular groove on the male head (4) for snap-fit.

3. The protective cover for quick-connect tubing couplings according to claim 2, characterized in that: The cross-sectional shape of the boss structure (2) is arc-shaped.

4. The protective cover for quick-connect tubing couplings according to claim 2, characterized in that: The cross-sectional shape of the boss structure (2) is semi-circular.

5. The protective cover for quick-connect tubing couplings according to claim 1, characterized in that: The width of the assembly gap (3) is between 1mm and 2mm.

6. The protective cover for quick-connect tubing couplings according to claim 1 or 5, characterized in that: The assembly gap (3) is two or four.

7. The protective cover for quick-connect tubing couplings according to claim 1, characterized in that: The length of the assembly gap (3) is between one-third and one-half of the total length of the cover (1).

8. The protective cover for quick-connect tubing couplings according to claim 1, characterized in that: The thickness of the circumferential wall of the cover (1) is set between 2mm and 5mm.