CN224150358U - A type of ferrule cap leak-proof sealing joint - Google Patents
A type of ferrule cap leak-proof sealing jointInfo
- Publication number
- CN224150358U CN224150358U CN202521016776.2U CN202521016776U CN224150358U CN 224150358 U CN224150358 U CN 224150358U CN 202521016776 U CN202521016776 U CN 202521016776U CN 224150358 U CN224150358 U CN 224150358U
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- Prior art keywords
- ferrule
- wedge
- plug
- cutting
- nut
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Abstract
本实用新型属于密封接头技术领域，具体涉及一种卡套管帽型防漏密封接头，包括接头本体、卡套螺母、前卡套和后卡套；后卡套位于卡套螺母与接头本体之间；卡套螺母与堵头或快接接头螺纹连接，卡套螺母通过后卡套将前卡套抵压到堵头或快接接头上，第一楔形面与第三楔形面斜面配合，使前卡套的前端径向向内变形并卡入环形凹槽内。本方案通过楔形面实现密封和连接，具有连接强度高、连接可靠、泄漏率低、拆卸、安装便捷等特点，适用于核电厂等高温高压的使用环境；接头本体上不设置螺纹，在辐射等特殊场景中，显著减少现场人员的操作时间，降低了人员在辐照环境下的受照剂量；本方案的各部件可替换性强，零部件制造更简单，成本更低。
This utility model belongs to the field of sealing joint technology, specifically relating to a ferrule-cap type leak-proof sealing joint, including a joint body, a ferrule nut, a front ferrule, and a rear ferrule; the rear ferrule is located between the ferrule nut and the joint body; the ferrule nut is threadedly connected to a plug or quick-connect fitting, and the ferrule nut presses the front ferrule against the plug or quick-connect fitting through the rear ferrule; the first wedge-shaped surface and the third wedge-shaped surface are engaged, causing the front end of the front ferrule to deform radially inward and engage in the annular groove. This solution achieves sealing and connection through wedge-shaped surfaces, featuring high connection strength, reliable connection, low leakage rate, and convenient disassembly and installation, making it suitable for high-temperature and high-pressure environments such as nuclear power plants; the joint body has no threads, significantly reducing on-site personnel's operation time and radiation dose in special scenarios such as radiation exposure; the components of this solution are highly replaceable, the parts are simpler to manufacture, and the cost is lower.
Description
Technical Field
The utility model belongs to the technical field of sealing joints, and particularly relates to a cutting sleeve pipe cap type leakage-proof sealing joint.
Background
In the special fields of nuclear power engineering technical field, high-pressure hydrogen environment field and the like, the requirements of a conveying pipeline on leakage prevention and sealing performance are higher, but in order to ensure the stability and reliability of operation, a series of sampling analysis, drainage, exhaust and other works are required to be carried out irregularly, so that leakage prevention sealing joints are required to be arranged at different nodes of the nuclear power engineering pipeline and the high-pressure hydrogen pipeline, and the smooth operation of sampling analysis, drainage, exhaust and the like is convenient.
Because the medium in the nuclear power engineering pipeline is provided with radioactive medium, and the medium of the high-pressure hydrogen pipeline has inflammability, the leakage-proof requirement on the leakage-proof sealing joint is higher. At present, the leakage-proof sealing performance is improved by adopting the additional pipe cap, plug (1), quick connector and other types of isolation valves. In the pipe system of the nuclear safety level 1, the high-temperature high-pressure nuclear safety levels 2, 3 and the pipe system of the non-nuclear level, the prior sealing joint is difficult to meet due to the requirements of related standard specifications. And be provided with the screw thread on some quick detach joints, in order to guarantee the leak protection of screw thread department and seal, often need special nut to connect, increased the manufacturing cost of spare part, also reduced sealed joint's connection speed simultaneously, influenced work efficiency such as sample analysis, drainage, exhaust.
Disclosure of utility model
In order to solve the problems in the prior art, the scheme provides the sealing joint for preventing leakage of the cutting sleeve pipe cap.
The technical scheme adopted by the utility model is as follows:
a sleeve pipe cap type leak-proof sealing joint comprises a joint body, a sleeve nut, a front sleeve and a rear sleeve;
The plug or quick connector is provided with an external thread and a third wedge surface, the inner diameter of the third wedge surface is continuously increased from front to back, the clamping sleeve nut is sleeved at the front end of the connector body and is provided with an internal thread matched with the threads of the plug or the quick connector, the front clamping sleeve and the rear clamping sleeve are both in circular rings and are positioned between the clamping sleeve nut and the connector body, and the front clamping sleeve is positioned in front of the rear clamping sleeve and is conical and provided with a first wedge surface;
When the connector body is connected with the plug or the quick connector, the clamping sleeve nut is in threaded connection with the plug or the quick connector, the front clamping sleeve is pressed onto the plug or the quick connector by the clamping sleeve nut rear clamping sleeve, the first wedge surface is matched with the inclined surface of the third wedge surface, and the front end of the front clamping sleeve is deformed inwards in the radial direction and clamped into the annular groove.
As an alternative or supplement to the structure, a fourth wedge surface is arranged at the inner edge of the rear end of the front cutting sleeve, a fifth wedge surface is arranged at the outer edge of the front end of the rear cutting sleeve, the fourth wedge surface can be matched with the fifth wedge surface in an inclined plane manner, so that the rear end of the front cutting sleeve is expanded outwards in a radial direction, and is connected with the front end of the front cutting sleeve in parallel, and the front end of the front cutting sleeve is clamped into the annular groove.
As an alternative or supplement to the structure, the end face of the rear end of the rear cutting sleeve forms a second wedge face, a step wedge face is arranged on the inner side of the rear end of the cutting sleeve nut, the inner diameter of the step wedge face is continuously reduced from front to back, the second wedge face is matched with the step wedge face in an inclined plane manner, and the rear cutting sleeve is pressed inwards in the radial direction while being pressed forwards in the axial direction.
Alternatively or additionally, the front side of the annular groove is provided with a propping surface, and the front end of the front clamping sleeve is propped against the propping surface after being clamped into the annular groove.
Alternatively or additionally, the rear side of the annular groove is provided with a wedge-shaped annular surface, and after the front end of the front cutting sleeve is clamped into the annular groove, the inner wall of the front cutting sleeve is propped against the wedge-shaped annular surface.
As an alternative or supplement of the structure, the front end of the joint body is a splicing end, the rear end of the joint body is a welding end, and a butt welding slope surface is arranged at the outer edge of the welding end.
Alternatively or additionally to the above structure, the plug end and the welding end are separated by a collar.
The beneficial effects of the utility model are as follows:
1. The leakproof sealing joint in the scheme realizes sealing and connection through the wedge-shaped surface, has the characteristics of high connection strength, reliable connection and low leakage rate, and can be suitable for use environments of high temperature and high pressure of nuclear power plants and the like;
2. The scheme has the characteristics of convenient disassembly and installation, and the screw thread is arranged on the clamping sleeve nut which can flexibly move because the screw thread is not arranged on the immovable joint body, so that the convenience of connection is improved;
3. Each component of the leak-proof sealing joint of the scheme is simple in composition, strong in replaceability, simpler in manufacturing of parts, lower in cost and the like.
Drawings
In order to more clearly illustrate the embodiments of the present solution or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.
FIG. 1 is a connection state diagram of a plug and ferrule tube cap type leak-proof sealing joint;
FIG. 2 is a cross-sectional view of a plug;
FIG. 3 is a cross-sectional structural view of the ferrule nut;
FIG. 4 is a cross-sectional block diagram of the front ferrule;
FIG. 5 is a cross-sectional block diagram of the rear ferrule;
FIG. 6 is a cross-sectional structural view of the joint body;
FIG. 7 is a connection state diagram of the quick connect fitting and the ferrule tube cap type leak-proof seal fitting;
Fig. 8 is a state diagram of the snap fitting before the ferrule tube cap type leak-proof sealing joint is connected.
In the figure, 1, a plug, 1-1, a third wedge surface, 2, a clamping sleeve nut, 2-1, a step wedge surface, 3, a front clamping sleeve, 3-1, a first wedge surface, 3-2, a fourth wedge surface, 3-3, a front end surface, 3-4, an inner ring surface, 4, a rear clamping sleeve, 4-1, a fifth wedge surface, 4-2, a second wedge surface, 5, a joint body, 5-1, a butt welding slope surface, 5-2, a butt welding surface, 5-3, a wedge ring surface, 5-4, a plug end, 5-5, a welding end, 5-6, an annular groove, 6 and a quick joint.
Detailed Description
The technical solutions of the present embodiment will be clearly and completely described below with reference to the accompanying drawings, and the described embodiments are only some embodiments, but not all embodiments, and all other embodiments obtained by those skilled in the art without making any creative effort based on the embodiments of the present embodiment are all within the protection scope of the present solution.
As shown in fig. 1 to 8, the present embodiment designs a ferrule tube cap type leak-proof sealing joint, which includes a joint body 5, a ferrule nut 2, a front ferrule 3, and a rear ferrule 4.
The joint body 5 is used for externally connecting the plug 1 or the quick connector 6. When the sampling analysis, the water drainage, the air exhaust and the like are not performed, the joint body 5 is connected with the plug 1 in a plugging manner, and when the sampling analysis, the water drainage, the air exhaust and the like are required, the quick-connection joint 6 is connected with the joint body 5 in a plugging manner.
External threads and a third wedge surface 1-1 are arranged on the plug 1 or the quick connector 6, the third wedge surface 1-1 is positioned at the hole edge of the plug 1 or the quick connector 6, and the inner diameter of the third wedge surface 1-1 is continuously increased from front to back (in the scheme, the description of the front and back directions in the following text refers to fig. 1, and the left side in fig. 1 is the front and the right side is the back). The cutting ferrule nut 2 cup joints the front end at the joint body 5, is provided with the multistage step hole in the cutting ferrule nut 2, has in the cutting ferrule nut 2 with end cap 1 or quick connect joint 6 screw thread complex internal thread, when leak protection sealed joint is connected with end cap 1 or quick connect joint 6, is connected fixedly through the screw thread between cutting ferrule nut 2 and the quick connect joint 6. The ferrule nut 2 provides only axial force and does not interfere with the assembly of other components by twisting the entire pipeline by rotation of the threads.
The front cutting ferrule 3 and the rear cutting ferrule 4 are both annular, the front cutting ferrule 3 and the rear cutting ferrule 4 are positioned between the cutting ferrule nut 2 and the connector body 5, the front cutting ferrule 3 and the rear cutting ferrule 4 are sleeved outside the front end of the connector body 5, the front cutting ferrule 3 is positioned in front of the rear cutting ferrule 4, the front cutting ferrule 3 is conical, the outer wall surface of the front cutting ferrule 3 forms a first wedge-shaped surface 3-1, and the diameter of the first wedge-shaped surface 3-1 is continuously increased from front to back. An annular groove 5-6 is provided at the front end of the joint body 5. The front ferrule 3 and the rear ferrule 4 may be made of a metallic material or other hard material.
When the connector body 5 is connected with the plug 1 or the quick connector 6, the cutting sleeve nut 2 is in threaded connection with the plug 1 or the quick connector 6, the rear cutting sleeve 4 of the cutting sleeve nut 2 presses the front cutting sleeve 3 against the plug 1 or the quick connector 6, and the first wedge-shaped surface 3-1 is in inclined plane fit with the third wedge-shaped surface 1-1, so that the front end of the front cutting sleeve 3 deforms inwards in a radial direction and is clamped into the annular groove 5-6.
The inner edge of the rear end of the front cutting sleeve 3 is provided with a fourth wedge-shaped surface 3-2, the outer edge of the front end of the rear cutting sleeve 4 is provided with a fifth wedge-shaped surface 4-1, the fourth wedge-shaped surface 3-2 can be matched with the inclined surface of the fifth wedge-shaped surface 4-1 to enable the rear end of the front cutting sleeve 3 to expand radially outwards, so that the rear end of the front cutting sleeve 3 is lifted, the front end of the front cutting sleeve 3 is linked, and the front end of the front cutting sleeve 3 is clamped into the annular groove 5-6.
The end face of the rear end of the rear cutting sleeve 4 forms a second wedge-shaped face 4-2, the inner side of the rear end of the cutting sleeve nut 2 is provided with a step wedge-shaped face 2-1, the inner diameter of the step wedge-shaped face 2-1 is continuously reduced from front to rear, the second wedge-shaped face 4-2 is in inclined plane fit with the step wedge-shaped face 2-1, and the rear cutting sleeve 4 is radially inwards pressed while being pressed against the rear cutting sleeve 4 axially forwards.
The front side of the annular groove 5-6 is provided with a propping surface 5-2, and after the front end of the front cutting ferrule 3 is clamped into the annular groove 5-6, the front end surface 3-3 of the front cutting ferrule 3 is propped against the propping surface 5-2. The rear side of the annular groove 5-6 is provided with a wedge-shaped annular surface 5-3, and after the front end of the front cutting sleeve 3 is clamped into the annular groove 5-6, the inner annular surface 3-4 of the front cutting sleeve 3 abuts against the wedge-shaped annular surface 5-3. Through the sealing structure of the annular groove 5-6 and the front clamping sleeve 3, the requirements of high temperature, high pressure, leak protection rate and the like are met, and excellent sealing performance is ensured.
The front end of the joint body 5 is a splicing end 5-4, the rear end of the joint body 5 is a welding end 5-5, the splicing end 5-4 and the welding end 5-5 are separated by a convex ring, a butt welding slope surface 5-1 is arranged at the outer edge of the welding end 5-5 so as to weld the joint body 5 onto a pipeline system, and enough welding operation space can be reserved for the butt welding slope surface 5-1 to ensure the feasibility and convenience of welding.
The foregoing examples are provided for the purpose of illustration only and are not intended to be limiting of the embodiments, nor are they necessarily intended to be exhaustive of all embodiments. And obvious variations or modifications thereof are contemplated as falling within the scope of the present technology.
Claims (7)
1. The cutting ferrule tube cap type leak-proof sealing joint is characterized by comprising a joint body (5), a cutting ferrule nut (2), a front cutting ferrule (3) and a rear cutting ferrule (4);
The connector body (5) is used for externally connecting a plug (1) or a quick connector (6), an external thread and a third wedge-shaped surface (1-1) are arranged on the plug (1) or the quick connector (6), the inner diameter of the third wedge-shaped surface (1-1) is continuously increased from front to back, the clamping sleeve nut (2) is sleeved at the front end of the connector body (5) and is provided with an internal thread matched with the plug (1) or the quick connector (6), the front clamping sleeve (3) and the rear clamping sleeve (4) are both circular and are positioned between the clamping sleeve nut (2) and the connector body (5), the front clamping sleeve (3) is positioned in front of the rear clamping sleeve (4), the front clamping sleeve (3) is conical and is provided with a first wedge-shaped surface (3-1), and the front end of the connector body (5) is provided with an annular groove (5-6);
When the connector body (5) is connected with the plug (1) or the quick connector (6), the cutting sleeve nut (2) is in threaded connection with the plug (1) or the quick connector (6), the cutting sleeve (4) abuts the front cutting sleeve (3) on the plug (1) or the quick connector (6) after the cutting sleeve nut (2), the first wedge-shaped surface (3-1) is matched with the inclined surface of the third wedge-shaped surface (1-1), and the front end of the front cutting sleeve (3) is deformed inwards in the radial direction and clamped into the annular groove (5-6).
2. The sealing joint for preventing leakage of the cutting ferrule and pipe cap type according to claim 1, wherein a fourth wedge-shaped surface (3-2) is arranged at the inner edge of the rear end of the front cutting ferrule (3), a fifth wedge-shaped surface (4-1) is arranged at the outer edge of the front end of the rear cutting ferrule (4), and the fourth wedge-shaped surface (3-2) can be matched with the fifth wedge-shaped surface (4-1) in an inclined plane, so that the rear end of the front cutting ferrule (3) expands outwards in a radial direction and is linked with the front end of the front cutting ferrule (3), and the front end of the front cutting ferrule (3) is clamped into the annular groove (5-6).
3. The ferrule tube cap-type leak-proof sealing joint according to claim 2, wherein a second wedge surface (4-2) is formed on the end surface of the rear end of the rear ferrule (4), a step wedge surface (2-1) is arranged on the inner side of the rear end of the ferrule nut (2), the inner diameter of the step wedge surface (2-1) is continuously reduced from front to back, the second wedge surface (4-2) is in inclined fit with the step wedge surface (2-1), and the rear ferrule (4) is pressed radially inwards while being pressed against the rear ferrule (4) axially forwards.
4. A sealing joint for preventing leakage of a cutting sleeve pipe cap according to any one of claims 1 to 3, wherein the front side of the annular groove (5 to 6) is provided with a supporting surface (5 to 2), and the front end of the front cutting sleeve (3) is propped against the supporting surface (5 to 2) after being clamped into the annular groove (5 to 6).
5. The cap-type leak-proof sealing joint for a cutting ferrule tube according to claim 4, wherein a wedge-shaped annular surface (5-3) is arranged at the rear side of the annular groove (5-6), and after the front end of the front cutting ferrule (3) is clamped into the annular groove (5-6), the inner wall of the front cutting ferrule (3) is propped against the wedge-shaped annular surface (5-3).
6. A sealing joint for preventing leakage of a cutting sleeve pipe cap according to any one of claims 1 to 3, wherein the front end of the joint body (5) is a plugging end (5-4), the rear end of the joint body (5) is a welding end (5-5), and a butt welding slope (5-1) is arranged at the outer edge of the welding end (5-5).
7. The ferrule-tube cap-type leak-proof sealing joint according to claim 6, wherein the plug end (5-4) and the weld end (5-5) are separated by a collar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202521016776.2U CN224150358U (en) | 2025-05-21 | 2025-05-21 | A type of ferrule cap leak-proof sealing joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202521016776.2U CN224150358U (en) | 2025-05-21 | 2025-05-21 | A type of ferrule cap leak-proof sealing joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN224150358U true CN224150358U (en) | 2026-04-21 |
Family
ID=99461175
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202521016776.2U Active CN224150358U (en) | 2025-05-21 | 2025-05-21 | A type of ferrule cap leak-proof sealing joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN224150358U (en) |
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2025
- 2025-05-21 CN CN202521016776.2U patent/CN224150358U/en active Active
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