CN217927619U - Prefabricated joint made of plastic material and used for nuclear power plant water supply pump - Google Patents
Prefabricated joint made of plastic material and used for nuclear power plant water supply pump Download PDFInfo
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- CN217927619U CN217927619U CN202222071356.7U CN202222071356U CN217927619U CN 217927619 U CN217927619 U CN 217927619U CN 202222071356 U CN202222071356 U CN 202222071356U CN 217927619 U CN217927619 U CN 217927619U
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- connecting pipe
- joint
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- plastic material
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Abstract
The utility model discloses a nuclear power plant's that plastic material made is prefabricated joint for feedwater pump belongs to plastic material goods field. This prefabricated joint includes: main part, screwed part and cover pipe portion, the lateral wall of main part and the tip butt of connecting pipe, screwed part set up the internal thread structure in the main part, its and the tip spiro union of water pipe, cover pipe portion sets up in the tubular structure of main part and connecting pipe butt one side, the outer wall interference fit of its inner wall and connecting pipe, main part, screwed part and cover pipe portion are made by ABS, PVC, PP, PS or PET material. The utility model discloses a butt of main part and connecting pipe, the spiro union of spiro union portion and water pipe tip to and the interference fit of bushing part and connecting pipe, can improve both's vibration synchronization rate when water pipe or connecting pipe vibrate, because prefabricated joint is made by plastic material, it can fill joint department when the vibration, makes joint department leakproofness stronger and stronger moreover.
Description
Technical Field
The utility model belongs to plastic material goods field specifically is a nuclear power plant's that plastic material made is prefabricated joint for feed pump.
Background
The water pipe for the water feeding pump in the prior art is made of rigid metal materials, but the metal materials have the problem of poor plasticity, when the water pipe is applied to the water inlet and outlet ends of the water feeding pump, the vibration of the water feeding pump is transmitted to the joint to enable the joint to vibrate along with the vibration, and the joint is gradually increased in vibration clearance due to the fact that the connecting pipe and the water pipe are made of the rigid metal materials which are screwed together, and the water feeding pump needs to be frequently overhauled.
The direct use of the plastic joint has insufficient rigidity, and the damaged leakage cannot be directly applied to the problems of high protection safety of a nuclear power plant.
Therefore, it is necessary to provide a joint capable of ensuring rigidity and strength while avoiding a gradual increase in the clearance to be subjected to vibration at the joint.
SUMMERY OF THE UTILITY MODEL
Utility model purpose: the utility model provides a nuclear power plant's water pump is with prefabricated joint that plastic materials made to solve the above-mentioned problem that prior art exists.
The technical scheme is as follows: a prefabricated joint made of plastic materials for a nuclear power plant water supply pump is installed at a screwed joint of a water pipe and a connecting pipe.
The prefabricated joint includes: and a main body part, the side wall of which is abutted against the end part of the connecting pipe.
The screwing part is an internal thread structure opened in the main body part and is screwed with the end part of the water pipe.
The sleeve part is arranged on the tubular structure on one side where the main body part is abutted to the connecting pipe, and the inner wall of the sleeve part is in interference fit with the outer wall of the connecting pipe.
The main body part, the screw part and the sleeve part are made of ABS, PVC, PP, PS or PET materials.
In a further embodiment, the side of the body part abutting the end of the connecting tube is provided with a plurality of sheet-like projections.
And a preset gap space is arranged between every two adjacent sheet-shaped convex parts.
The sheet-shaped convex parts are equally distributed around the circumference of the screwed part.
During assembly, the connecting pipe heated to the preset temperature is spirally advanced for a preset distance along the central shaft of the water pipe, the connecting pipe is abutted against the sheet-shaped convex part, the sheet-shaped convex part is melted for a preset amount and filled in a preset gap space, and the connection tightness of the prefabricated joint and the connecting pipe is improved.
In a further embodiment, the main body portion is provided with a plurality of through holes.
The through holes are distributed around the circumference of the screwed part in an equal distribution mode.
The number of the through holes is matched with the number of the preset clearance spaces.
The through hole is communicated with the preset gap space, and air in the preset gap space is discharged through the through hole, so that the sealing performance is further improved.
In a further embodiment, the through hole is a taper hole, one end of the taper hole close to the sheet-shaped convex part is larger than one end of the taper hole far away from the sheet-shaped convex part, and demolding is facilitated during production.
In a further embodiment, the sleeve portion has a frustoconical cavity inside, and an inner diameter proximal to the body end is smaller than an inner diameter distal to the body end.
The sleeve portion has an inner diameter near the body end smaller than an outer diameter of the end of the connecting tube.
The tab-like projection is connected to an inner wall of the sleeve portion near the end of the body.
In a further embodiment, the threaded portion is a tapered internal thread structure that mates with the end of the water tube.
Has the advantages that: the utility model discloses a nuclear power plant that plastic material made is prefabricated joint for feed pump, butt through main part and connecting pipe, the spiro union of spiro union portion and water pipe tip, and the interference fit of bushing portion and connecting pipe, can be when water pipe or connecting pipe vibrate, improve both's vibration synchronization rate, and because prefabricated joint is made by plastic material, it can fill joint department when vibrating, make joint department leakproofness stronger and stronger, the problem that the junction of having solved prior art water pipe and connecting pipe that only uses rigid material receives the vibration clearance to increase gradually easily, and connecting pipe and water pipe still connect through the rigidity spiro union, holistic rigidity intensity has been guaranteed.
Drawings
Fig. 1 is a schematic axial view of the present invention.
Fig. 2 is a schematic sectional view of the assembly of the present invention.
The reference numbers shown in fig. 1 to 2 are: 1. a main body portion; 2. a screw connection part; 3. a sleeve portion; 4. a sheet-like convex portion; 5. a through hole; 6. a water pipe; 7. and (4) connecting the pipes.
Detailed Description
In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring the present invention.
The utility model discloses a can avoid joint department to receive the joint of rigidity intensity when vibration clearance increases gradually.
The prefabricated joint is arranged at the position of a screwed joint of the water pipe and the connecting pipe.
This prefabricated joint includes: a main body part 1, a screw part 2 and a sleeve part 3.
The side wall of the main body 1 abuts on the end of the connection pipe 7.
The screw joint part 2 is provided with an internal thread structure in the main body part 1 and is screwed with the end part of the water pipe 6.
The sleeve portion 3 is provided in a tubular structure on the side where the main body portion 1 abuts against the connection pipe 7, and the inner wall thereof is in interference fit with the outer wall of the connection pipe 7.
The main body portion 1, the screw portion 2 and the sleeve portion 3 are made of ABS, PVC, PP, PS or PET.
The working principle is as follows: through the butt of main part 1 and connecting pipe 7, the spiro union of spiro union portion 2 and 6 tip of water pipe to and the interference fit of sleeve part 3 and connecting pipe 7, can improve the vibration synchronization rate between water pipe 6 or connecting pipe 7 when vibrating, because prefabricated joint is made by plastic material, it can fill joint department when the vibration, makes joint department leakproofness stronger and stronger.
In a further embodiment, the main body 1 is provided with a plurality of tab-like protrusions 4 on the side abutting the end of the connection tube 7.
Adjacent ones of the plate-like projections 4 are spaced apart by a predetermined gap space.
The sheet-like projections 4 are equally distributed around the circumference of the screw joint 2.
In the assembling work, the connection pipe 7 heated to a predetermined temperature is spirally advanced by a predetermined distance along the central axis of the water pipe 6, the connection pipe 7 is brought into contact with the sheet-like projected portion 4, and the sheet-like projected portion 4 is melted by a predetermined amount and filled in a predetermined gap space.
The working principle is as follows: the end part of the connecting pipe 7 is heated before installation, then the temperature of the connecting pipe 7 is utilized to heat and melt the sheet-shaped protruding part 4, the joint of the connecting pipe 7 and the water pipe 6 and a preset gap space are filled, the connection tightness of the prefabricated joint and the connecting pipe 7 is improved, in the process of spirally advancing the connecting pipe 7, the sleeve part 3 is sleeved on the connecting pipe 7, the inner wall of the sleeve part 3 is melted to be in interference fit with the outer wall of the connecting pipe 7, and the connection tightness of the prefabricated joint and the connecting pipe 7 is improved.
In a further embodiment, the body portion 1 is provided with a plurality of through holes 5.
The through holes 5 are equally distributed around the circumference of the screw joint 2.
The number of through holes 5 matches the number of predetermined clearance spaces.
The through-hole 5 communicates with a predetermined clearance space.
When the sheet-shaped convex part 4 is crushed or melted, air in the preset gap space is discharged through the through hole 5, and when the sheet-shaped convex part 4 is crushed or melted, the through hole 5 can be blocked, so that the sealing performance is further improved.
In a further embodiment, the through hole 5 is a taper hole which is larger at one end close to the sheet-shaped convex part 4 than at one end far away from the sheet-shaped convex part 4, so that demoulding during production is facilitated.
In a further embodiment, the interior of the sleeve portion 3 is a truncated cone-shaped cavity, and the inner diameter near the end of the main body portion 1 is smaller than the inner diameter far away from the end of the main body portion 1.
The inner diameter of the sleeve part 3 near the end of the main body part 1 is smaller than the outer diameter of the end of the connection pipe 7.
The tab-like projection 4 is connected to the inner wall of the sleeve portion 3 near the end of the main body portion 1.
The prefabricated joint can be used for sleeving connecting pipes 7 with different outer diameters and guiding the connecting pipes in the sleeving process.
In a further embodiment, the screw connection 2 is a conical internal thread structure which cooperates with the end of the water tube 6.
The connection strength of the prefabricated joint and the water pipe 6 is improved.
Claims (6)
1. A prefabricated joint for a nuclear power plant water pump made of plastic materials is arranged at a screwed joint of a water pipe (6) and a connecting pipe (7);
it is characterized by comprising: a main body (1) having a side wall abutting against an end of the connection pipe (7);
the screwing part (2) is arranged in an internal thread structure in the main body part (1) and is screwed with the end part of the water pipe (6);
the sleeve part (3) is arranged on the tubular structure on one side, abutted to the connecting pipe (7), of the main body part (1), and the inner wall of the sleeve part is in interference fit with the outer wall of the connecting pipe (7);
the main body part (1), the screw joint part (2) and the sleeve part (3) are made of ABS, PVC, PP, PS or PET materials.
2. The prefabricated joint for a nuclear power plant water pump made of plastic material as claimed in claim 1, wherein,
a plurality of sheet-shaped convex parts (4) are arranged on one side of the main body part (1) which is abutted against the end part of the connecting pipe (7);
a preset gap space is arranged between every two adjacent sheet-shaped convex parts (4);
the flaky convex parts (4) are distributed around the circumference of the screwed part (2) in an equal distribution manner;
during assembly, the connecting pipe (7) heated to a predetermined temperature is spirally advanced a predetermined distance along the central axis of the water pipe (6), the connecting pipe (7) is abutted against the sheet-like protrusion (4), and the sheet-like protrusion (4) is melted by a predetermined amount and filled in a predetermined gap space.
3. The pre-fabricated joint for a nuclear power plant feed pump made of plastic material as recited in claim 2,
the main body part (1) is provided with a plurality of through holes (5);
the through holes (5) are distributed around the circumference of the screw joint part (2) in an equal distribution manner;
the number of the through holes (5) is matched with the number of the preset gap spaces;
the through hole (5) is in communication with a predetermined clearance space.
4. The pre-fabricated joint for a nuclear power plant feed pump made of plastic material as recited in claim 3,
the through hole (5) is a taper hole with one end close to the sheet-shaped convex part (4) larger than one end far away from the sheet-shaped convex part (4).
5. The pre-fabricated joint for a nuclear power plant feed pump made of plastic material as recited in claim 2,
the sleeve part (3) is internally provided with a truncated cone-shaped cavity, and the inner diameter of the end close to the main body part (1) is smaller than that of the end far away from the main body part (1);
the inner diameter of the sleeve part (3) close to the end of the main body part (1) is smaller than the outer diameter of the end part of the connecting pipe (7);
the sheet-shaped bulge part (4) is connected with the inner wall of the sleeve part (3) close to the end of the main body part (1).
6. The pre-fabricated joint for a nuclear power plant feed pump made of plastic material as recited in claim 1,
the screw joint part (2) is a conical internal thread structure matched with the end part of the water pipe (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222071356.7U CN217927619U (en) | 2022-08-05 | 2022-08-05 | Prefabricated joint made of plastic material and used for nuclear power plant water supply pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222071356.7U CN217927619U (en) | 2022-08-05 | 2022-08-05 | Prefabricated joint made of plastic material and used for nuclear power plant water supply pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217927619U true CN217927619U (en) | 2022-11-29 |
Family
ID=84153092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222071356.7U Active CN217927619U (en) | 2022-08-05 | 2022-08-05 | Prefabricated joint made of plastic material and used for nuclear power plant water supply pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217927619U (en) |
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2022
- 2022-08-05 CN CN202222071356.7U patent/CN217927619U/en active Active
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