Efficient sealing structure of nuclear power pipe fitting

Abstract

The utility model relates to the technical field of pipe fitting sealing, in particular to an efficient sealing structure of nuclear power pipe fittings, which comprises a connecting sleeve, an abutting block and a first sealing gasket, nuclear power pipe fittings at two ends are respectively inserted into the connecting sleeve from two ends of the connecting sleeve and are connected with the connecting sleeve, the abutting block is embedded in the connecting sleeve, and the first sealing gasket is arranged on the abutting block. The first sealing gasket is located on the side, close to the nuclear power pipe fitting, of the abutting block, the end face of the first sealing gasket abuts against the abutting block, the side face of the first sealing gasket abuts against the inner wall of the connecting sleeve, the section of the first sealing gasket is in an L shape, and the first sealing gasket is used for sealing the end face and the side face of the nuclear power pipe fitting. The end face and the side face of the nuclear power pipe fitting can be sealed at the same time through the first sealing gasket with the L-shaped section, and the sealing effect of the nuclear power pipe fitting can be improved through sealing in the end face direction and the side face direction in the mode.

Description

Technical Field

[0001] This utility model relates to the field of pipe sealing technology, and in particular to a high-efficiency sealing structure for nuclear power pipe fittings. Background Technology

[0002] Nuclear power plant piping is crucial for the safe and stable operation of a nuclear power plant. It bears the heavy responsibility of transporting nuclear energy media, ensuring system sealing, and withstanding extreme operating conditions. It features high reliability, corrosion resistance, high temperature and pressure resistance, radiation resistance, and long service life. To prevent leaks, ensure system safety, maintain system performance, protect the environment, and adapt to special operating conditions, we urgently need a highly efficient sealing structure for nuclear power plant piping to guarantee the overall sealing performance of the entire system.

[0003] Currently, the sealing structure of nuclear power pipe fittings is achieved by sealing gaskets. When two nuclear power pipe fittings are connected, the sealing gaskets on the end faces of the two fittings are pressed against each other to achieve a seal between the two fittings. However, relying solely on the end face sealing gaskets results in a poor sealing effect. Utility Model Content

[0004] In response to the shortcomings of the existing production technology, the applicant provides a high-efficiency sealing structure for nuclear power pipe fittings. By improving the sealing structure, the sealing effect of the two sections of the nuclear power pipe fittings is enhanced.

[0005] The technical solution adopted in this utility model is as follows:

[0006] A high-efficiency sealing structure for nuclear power pipe fittings includes: a connecting sleeve, an abutment block, and a first sealing gasket. Two nuclear power pipe fittings are inserted into the connecting sleeve from both ends and connected to it. The abutment block is embedded within the connecting sleeve. The first sealing gasket is located on the side of the abutment block closest to the nuclear power pipe fitting. The end face of the first sealing gasket abuts against the abutment block, and the side face of the first sealing gasket abuts against the inner wall of the connecting sleeve. The first sealing gasket has an L-shaped cross-section and is used for end face sealing and side sealing of the nuclear power pipe fittings.

[0007] Therefore, by using an L-shaped first sealing gasket, the end face and side face of nuclear power pipe fittings can be sealed simultaneously. Compared with the existing sealing method that only relies on end face sealing, this method has a simple structure and is easy to operate. Sealing in both the end face and side face directions can improve the sealing effect of nuclear power pipe fittings. In addition, the integrated first sealing gasket can not only meet the sealing effect in both the end face and side face directions, but also facilitate installation and disassembly.

[0008] As a further improvement to the above technical solution: two first sealing gaskets are provided, one on each side of the abutment block, and the other on the end face and side of the two nuclear power pipe fittings, respectively. Thus, the design of two first sealing gaskets ensures that the sealing processes of the two nuclear power pipe fittings are independent and do not affect each other, thereby reducing the risk of damage to the first sealing element and improving its service life.

[0009] As a further improvement to the above technical solution: the end face of the first sealing gasket near the nuclear power pipe fitting is set as an inclined surface. Thus, the inclined first sealing gasket facilitates the insertion of the nuclear power pipe fitting into the abutment block along the inclined surface. The first sealing gasket ensures that the end face of the nuclear power pipe fitting abuts against the abutment block, and the side surface of the nuclear power pipe fitting abuts against the side surface of the connecting sleeve, thereby facilitating the installation of the nuclear power pipe fitting.

[0010] As a further improvement to the above technical solution: the abutment block has a first mounting groove, the nuclear power pipe fitting is inserted into the first mounting groove and connected to the abutment block.

[0011] As a further improvement to the above technical solution: the side of the abutment block away from the connecting sleeve is set as an inclined surface. Therefore, when used in nuclear power plant piping, the inclined abutment block allows fluid to smoothly transition from the nuclear power plant piping into the abutment block or vice versa, avoiding energy loss caused by collision between the fluid and the abutment block. This improves the fluid transport effect and efficiency.

[0012] As a further improvement to the above technical solution, it also includes a second sealing gasket, one side of which is mounted on the side wall of the first mounting groove, and the other side of which is embedded in the inner wall of the nuclear power pipe fitting. The second sealing gasket is located on the side of the first mounting groove away from the first sealing gasket. Therefore, the sealing effect between the nuclear power pipe fitting and the abutment block can be improved by using the second sealing element.

[0013] As a further improvement to the above technical solution: the cross-sectional shape of the second sealing gasket is U-shaped, and the side of the second sealing gasket near the first sealing gasket is set as an inclined surface. Thus, the inclined shape of the second sealing gasket facilitates the insertion of nuclear power pipe fittings into the abutment block along the inclined surface, allowing the nuclear power pipe fittings to abut against the abutment block, thereby facilitating the installation of the nuclear power pipe fittings.

[0014] As a further improvement to the above technical solution: the U-shaped opening of the second sealing gasket faces the side of the nuclear power pipe fitting. Therefore, this design, where the U-shaped opening of the second sealing gasket faces the side of the nuclear power pipe fitting, can fully utilize the pressure of the fluid inside the nuclear power pipe fitting to generate an expanding force on the U-shaped second sealing ring. This increases the compression effect of the U-shaped second sealing ring relative to the abutment block and the nuclear power pipe fitting, thereby significantly improving the sealing effect between the nuclear power pipe fitting and the abutment block.

[0015] As a further improvement to the above technical solution, it also includes a connection mechanism, through which the nuclear power pipe fittings are connected to the connecting sleeve.

[0016] As a further improvement to the above technical solution: the connecting mechanism includes an installation block, a second installation groove, and a locking member. The installation block is installed on the outer wall of the nuclear power pipe fitting, the second installation groove is formed on the inner wall of the connecting sleeve, and the locking member passes through the connecting sleeve and the second installation groove, and is threadedly connected to the connecting sleeve. The connecting sleeve is inserted into the installation block and threadedly connected to the installation block. Thus, through the cooperation of the installation block and the second installation groove, it can be ensured that the installation method of the nuclear power pipe fitting and the connecting sleeve is an insertion installation along the axial direction of the nuclear power pipe fitting, rather than a spiral rotation installation. Furthermore, the locking member can secure the nuclear power pipe fitting and the connecting sleeve. Compared to spiral rotation installation, this installation method can reduce loosening caused by vibration between the nuclear power pipe fitting and the connecting sleeve, thereby avoiding the sealing effect of the nuclear power pipe fitting due to vibration-induced loosening.

[0017] The beneficial effects of this utility model are as follows:

[0018] The L-shaped first sealing gasket can simultaneously seal the end face and side of nuclear power pipe fittings. Compared with the existing sealing method that only relies on end face sealing, this method has a simple structure and is easy to operate. Sealing in both the end face and side direction can improve the sealing effect of nuclear power pipe fittings. In addition, the integrated first sealing gasket can not only meet the sealing effect in both the end face and side direction, but also facilitate installation and disassembly.

[0019] This utility model also has the following advantages:

[0020] 1. This utility model uses the design of two first sealing gaskets to make the sealing treatment of the two nuclear power pipe components independent of each other and not affect each other. In this way, the risk of damage to the first sealing component can be reduced, thereby improving the service life of the first sealing component.

[0021] 2. When this utility model is used in nuclear power pipe fittings, the inclined abutment block allows the fluid to smoothly transition from the nuclear power pipe fitting into the abutment block or vice versa, avoiding energy loss caused by collision between the fluid and the abutment block. This improves the fluid transport effect and efficiency.

[0022] 3. This utility model, through the cooperation of the mounting block and the second mounting groove, ensures that the installation method of the nuclear power pipe fitting and the connecting sleeve is an insertion installation along the axial direction of the nuclear power pipe fitting, rather than a spiral rotation installation. In addition, the locking component can fasten the nuclear power pipe fitting and the connecting sleeve. Compared with the spiral rotation installation, this installation method can reduce the loosening caused by vibration between the nuclear power pipe fitting and the connecting sleeve, thus avoiding the sealing effect of the nuclear power pipe fitting due to vibration loosening. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the high-efficiency sealing structure of the nuclear power pipe fitting of this utility model;

[0024] Figure 2 An exploded view of the high-efficiency sealing structure of the nuclear power pipe fitting of this utility model;

[0025] Figure 3 This is a cross-sectional view of the high-efficiency sealing structure of the nuclear power pipe fitting of this utility model;

[0026] Figure 4 For the present utility model Figure 3 Enlarged schematic diagram of a local structure at point A;

[0027] Figure 5 A cross-sectional view of the installation of the connecting sleeve and the abutment block of this utility model;

[0028] Figure 6 This is a schematic diagram of the structure of the first sealing gasket of this utility model;

[0029] Figure 7 This is a schematic diagram of the structure of the second sealing gasket of this utility model.

[0030] Among them: 1. Connecting sleeve;

[0031] 2. Abutment block;

[0032] 201. First mounting slot;

[0033] 3. First sealing gasket;

[0034] 4. Second sealing gasket;

[0035] 5. Connecting mechanism;

[0036] 501. Mounting block; 502. Second mounting slot; 503. Locking element. Detailed Implementation

[0037] The specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0038] like Figures 1 to 7 The diagram shows the preferred embodiment of this utility model. The efficient sealing structure of the nuclear power pipe fittings in this embodiment includes: a connecting sleeve 1, an abutment block 2, and a first sealing gasket 3. The nuclear power pipe fittings at both ends are inserted into the connecting sleeve 1 from both ends and connected to the connecting sleeve 1. The abutment block 2 is embedded in the connecting sleeve 1. The first sealing gasket 3 is located on the side of the abutment block 2 close to the nuclear power pipe fitting. The end face of the first sealing gasket 3 abuts against the abutment block 2, and the side face of the first sealing gasket 3 abuts against the inner wall of the connecting sleeve 1. The cross-sectional shape of the first sealing gasket 3 is L-shaped. The first sealing gasket 3 is used for end face sealing and side sealing of the nuclear power pipe fittings. Therefore, by using the L-shaped first sealing gasket 3, the end face and side face of the nuclear power pipe fitting can be sealed simultaneously. Compared with the existing sealing method that only relies on end face sealing, this method has a simple structure and is easy to operate. Sealing in both the end face and side face directions can improve the sealing effect of the nuclear power pipe fitting. In addition, the integrated first sealing gasket 3 can not only meet the sealing effect in both the end face and side face directions, but also facilitate installation and disassembly.

[0039] In this embodiment, two first sealing gaskets 3 are provided, located on opposite sides of the abutment block 2. The two first sealing gaskets 3 are used for end face sealing and side sealing of the two nuclear power pipe sections, respectively. The end face of the first sealing gasket 3 near the nuclear power pipe section is beveled. Thus, the design of the two first sealing gaskets 3 ensures that the sealing processes of the two nuclear power pipe sections are independent and do not affect each other, thereby reducing the risk of damage to the first sealing element and improving its service life. The beveled first sealing gasket 3 facilitates the insertion of the nuclear power pipe section into the abutment block 2 along the bevel. The first sealing gasket 3 ensures that the end face of the nuclear power pipe section abuts against the abutment block 2, and the side face of the nuclear power pipe section abuts against the side face of the connecting sleeve 1, thus facilitating the installation of the nuclear power pipe section.

[0040] In this embodiment, the abutment block 2 has a first mounting groove 201. The nuclear power pipe fitting is inserted into the first mounting groove 201 and connected to the abutment block 2. The side of the abutment block 2 away from the connecting sleeve 1 is set as an inclined surface. Therefore, when the nuclear power pipe fitting is in use, the inclined abutment block 2 allows the fluid to smoothly transition from the nuclear power pipe fitting to the abutment block 2 or vice versa, avoiding energy loss caused by collision between the fluid and the abutment block 2. This improves the fluid transport effect and transport efficiency.

[0041] In this embodiment, it further includes: a second sealing gasket 4, one side of which is installed on the side wall of the first mounting groove 201, and the other side of which is embedded in the inner wall of the nuclear power pipe fitting. The second sealing gasket 4 is located on the side of the first mounting groove 201 away from the first sealing gasket 3. The cross-sectional shape of the second sealing gasket 4 is U-shaped, and the side of the second sealing gasket 4 near the first sealing gasket 3 is set as an inclined surface. The U-shaped opening of the second sealing gasket 4 faces the side of the nuclear power pipe fitting. Therefore, the second sealing element can improve the sealing effect between the nuclear power pipe fitting and the abutment block 2; the inclined second sealing gasket 4 allows the nuclear power pipe fitting to be inserted into the abutment block 2 along the inclined surface so that the nuclear power pipe fitting and the abutment block 2 abut against each other, thus facilitating the installation of the nuclear power pipe fitting; the design of the U-shaped opening of the second sealing gasket 4 facing the side of the nuclear power pipe fitting can make full use of the pressure of the fluid inside the nuclear power pipe fitting to generate an expansion force on the U-shaped second sealing ring, thus increasing the squeezing effect of the U-shaped second sealing ring relative to the abutment block 2 and the nuclear power pipe fitting, thereby significantly improving the sealing effect between the nuclear power pipe fitting and the abutment block 2.

[0042] In this embodiment, it also includes a connecting mechanism 5, through which the nuclear power pipe fitting and the connecting sleeve 1 are connected; the connecting mechanism 5 includes a mounting block 501, a second mounting groove 502 and a locking member 503, the mounting block 501 is mounted on the outer wall of the nuclear power pipe fitting, the second mounting groove 502 is opened on the inner wall of the connecting sleeve 1, the locking member 503 passes through the connecting sleeve 1 and the second mounting groove 502 and is threadedly connected to the connecting sleeve 1, the connecting sleeve 1 is inserted into the mounting block 501 and is threadedly connected to the mounting block 501. Therefore, through the cooperation of the mounting block 501 and the second mounting groove 502, it can be ensured that the installation method of the nuclear power pipe fitting and the connecting sleeve 1 is an insertion installation along the axial direction of the nuclear power pipe fitting, rather than a spiral rotation installation. In addition, the locking member 503 can fasten the nuclear power pipe fitting and the connecting sleeve 1. Compared with the spiral rotation installation, this installation method can reduce the loosening caused by vibration between the nuclear power pipe fitting and the connecting sleeve 1, thus avoiding the sealing effect of the nuclear power pipe fitting due to vibration loosening.

[0043] For example, locking component 503 uses bolts.

[0044] The installation process of the two-section nuclear power pipe fitting of this utility model is as follows: First, the mounting block 501 is aligned with the second mounting groove 502 so that the nuclear power pipe fitting is inserted into the connecting sleeve 1 along the axial direction of the nuclear power pipe fitting. Under the guidance of the inclined first sealing gasket 3 and the inclined second sealing gasket 4, the end face of the nuclear power pipe fitting abuts against the abutting block 2, and the side of the nuclear power pipe fitting abuts against the inner wall of the connecting sleeve 1. Finally, the locking part 503 is tightened by rotation to complete the installation of the two-section nuclear power pipe fitting. In use, the first sealing gasket 3 and the second sealing gasket 4 can seal the nuclear power pipe fitting so that no leakage occurs when the fluid flows between the two sections of the nuclear power pipe fitting. In addition, under the action of the inclined abutting block 2, the fluid can be transported without loss.

[0045] In summary, this utility model, through the L-shaped first sealing gasket 3, can simultaneously seal the end face and side face of nuclear power pipe fittings. Compared with the existing sealing methods that rely solely on end face sealing, this method has a simpler structure and is easier to operate. Sealing in both the end face and side face directions can improve the sealing effect of nuclear power pipe fittings. In addition, the integrated first sealing gasket 3 not only satisfies the sealing effect in both the end face and side face directions, but also facilitates installation and disassembly.

[0046] The above description is an explanation of the present utility model and not a limitation thereof. The scope of the present utility model is defined by the claims. Within the protection scope of the present utility model, any form of modification may be made.

Claims

1. A high-efficiency sealing structure for nuclear power plant electrical pipe fittings, characterized in that, include: A connecting sleeve (1) is provided, and nuclear power pipe fittings at both ends are inserted into the connecting sleeve (1) from both ends and connected to the connecting sleeve (1). The abutment block (2) and the first sealing gasket (3) are provided. The abutment block (2) is embedded in the connecting sleeve (1). The first sealing gasket (3) is located on the side of the abutment block (2) near the nuclear power pipe fitting. The end face of the first sealing gasket (3) abuts against the abutment block (2). The side of the first sealing gasket (3) abuts against the inner wall of the connecting sleeve (1). The cross-sectional shape of the first sealing gasket (3) is L-shaped. The first sealing gasket (3) is used for end face sealing and side sealing of the nuclear power pipe fitting.

2. The high-efficiency sealing structure of nuclear power pipe fittings as described in claim 1, characterized in that: There are two first sealing gaskets (3). The two first sealing gaskets (3) are located on both sides of the abutment block (2). The two first sealing gaskets (3) are used for end face sealing and side sealing of the two nuclear power pipe fittings respectively.

3. The high-efficiency sealing structure of nuclear power pipe fittings as described in claim 1, characterized in that: The end face of the first sealing gasket (3) near the nuclear power pipe fitting is set as a bevel.

4. The high-efficiency sealing structure of nuclear power pipe fittings as described in claim 1, characterized in that: The abutment block (2) has a first mounting groove (201), and the nuclear power pipe fitting is inserted into the first mounting groove (201) and connected to the abutment block (2).

5. The high-efficiency sealing structure of nuclear power pipe fittings as described in claim 1, characterized in that: The side of the abutment block (2) away from the connecting sleeve (1) is set as an inclined surface.

6. The high-efficiency sealing structure of nuclear power pipe fittings as described in claim 4, characterized in that: Also includes: The second sealing gasket (4) has one side mounted on the side wall of the first mounting groove (201) and the other side embedded in the inner wall of the nuclear power pipe fitting. The second sealing gasket (4) is located on the side of the first mounting groove (201) away from the first sealing gasket (3).

7. The high-efficiency sealing structure for nuclear power pipe fittings as described in claim 6, characterized in that: The second sealing gasket (4) has a U-shaped cross-section, and the side of the second sealing gasket (4) near the first sealing gasket (3) is set as a slope.

8. The high-efficiency sealing structure of nuclear power pipe fittings as described in claim 6, characterized in that: The U-shaped opening of the second sealing gasket (4) faces the side of the nuclear power pipe fitting.

9. The high-efficiency sealing structure of nuclear power pipe fittings as described in claim 1, characterized in that: Also includes: The nuclear power pipe fittings are connected to the connecting sleeve (1) via the connecting mechanism (5).

10. The high-efficiency sealing structure for nuclear power pipe fittings as described in claim 9, characterized in that: The connecting mechanism (5) includes: The system comprises an mounting block (501), a second mounting groove (502), and a locking member (503). The mounting block (501) is installed on the outer wall of the nuclear power pipe fitting. The second mounting groove (502) is opened on the inner wall of the connecting sleeve (1). The locking member (503) passes through the connecting sleeve (1) and the second mounting groove (502) and is threadedly connected to the connecting sleeve (1). The connecting sleeve (1) is inserted into the mounting block (501) and is threadedly connected to the mounting block (501).

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