CN209763022U - Novel SG drainage hole blocking tool - Google Patents
Novel SG drainage hole blocking tool Download PDFInfo
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- CN209763022U CN209763022U CN201920309188.6U CN201920309188U CN209763022U CN 209763022 U CN209763022 U CN 209763022U CN 201920309188 U CN201920309188 U CN 201920309188U CN 209763022 U CN209763022 U CN 209763022U
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Abstract
The utility model relates to a novel SG hydrophobic hole blocks up instrument, including integrated into one piece's core bar, rubber seal, metal gasket, third operating parts, fourth operating parts and fastening nut, the core bar including be used for the direction section and the head with the direction section links to each other, the afterbody is equipped with the screwed straight pole section, rubber seal, metal gasket, third operating parts and fourth operating parts are established along the direction movable sleeve in proper order of straight pole section head to afterbody and are established on the straight pole section, just link to each other through reverse screw-thread fit between third operating parts and the fourth operating parts, fastening nut follows the afterbody of straight pole section will fourth operating parts locking. The utility model discloses can improve operating personnel's installation effectiveness and reduce former specialized tool's fault rate, realize specialized tool's repeatedly usable, conveniently simplify and overhaul technology and reduce the cost of maintaining the use.
Description
Technical Field
The utility model relates to a nuclear power equipment field particularly, relates to a novel SG hydrophobic hole blocks up instrument.
background
The Steam Generator (SG) is one of the key equipments in the nuclear steam supply system, provides the steam source for main turbine, auxiliary steam system, etc., is the hub of the heat exchange between the first and second loops, belonging to one of the second radioactive protection barriers. During SG overhauls in nuclear power unit overhaul, need block up SG hydrophobic hole, play and prevent that the foreign matter from getting into a return circuit and prevent the effect of a water leakage of return circuit, current shutoff method blocks up for traditional SG hydrophobic hole blocking tool, as shown in fig. 1: the novel handle comprises a handle 1, a first operating part 2, a second operating part 3, a plug screw 4, a gasket 5, a rubber gasket 6, a pin 7 and a guide block 8. When the SG drainage hole plugging device is used, the plugging tool is installed in the drainage hole, the first operating part 2 is fixed by hand, the openings of the first operating part 2 and the second operating part 3 are matched with each other, then the rubber gasket 6 is squeezed by screwing the handle with a special socket wrench, and the rubber gasket 6 is squeezed to expand and deform so as to plug the SG drainage hole.
Although the existing SG drainage hole plugging tool can realize plugging of drainage holes, the following defects exist: 1. the matching mode of parts is complex, and the installation time is long; 2. the screw plug 4 is screwed to extrude the rubber gasket 6 by matching the internal threads of the screw plug 4 and the handle 1, the specification of the matched threads of the screw plug 4 and the handle 1 is M8, the screw pitch is small, and a specific rubber extrusion value can be reached by screwing for multiple turns, so that the operation time of personnel in a high-radiation control area is prolonged; 3. when the handle 1 is installed, a special socket wrench is needed to be used for screwing, so that the operation time is prolonged; 4. the screw plug 4 is connected with the guide block 8 through the pin 7, in order to prevent the guide block 8 from falling off, two ends of the pin 7 and the guide block 8 need to be welded into a whole and cannot be disassembled, and after the rubber gasket 6 is aged, spare parts cannot be replaced, so that the SG drainage hole blocking tool is integrally scrapped; 5. the thinner end of the handle 1 is a threaded section of M6, and is subjected to transverse shear force during installation, and when the central shaft of the SG drainage hole plugging tool is not completely parallel to the center of the drainage hole during installation, the SG drainage hole plugging tool can be subjected to larger torque and is easy to bend and deform, so that the plugging tool cannot be used.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a novel SG hydrophobic hole blocking tool can improve operating personnel's installation effectiveness and reduce former specialized tool's fault rate, realizes specialized tool's repeatedly usable, conveniently simplifies the maintenance technology and lowers the cost of maintaining the use.
The utility model adopts the technical proposal that: the utility model provides a novel SG hydrophobic hole blocks up instrument, including integrated into one piece's core bar, rubber seal, metal gasket, third operating parts, fourth operating parts and fastening nut, the core bar including be used for the direction section and the head that the direction section links to each other, the afterbody is equipped with the screwed straight pole section, rubber seal, metal gasket, third operating parts and fourth operating parts are established along straight pole section head to the direction of afterbody in proper order the activity cover and are established straight pole section is last, just link to each other through reverse screw-thread fit between third operating parts and the fourth operating parts, fastening nut follows the afterbody of straight pole section will fourth operating parts locking is used for preventing the fourth operating parts is retreated, revolves and revolves the fourth operating parts will make the third operating parts impels the extrusion forward metal gasket and rubber seal.
In the novel SG hydrophobic hole plugging tool of the present invention, the mating thread between the third operating member and the fourth operating member is an M16 reverse thread.
The novel SG hydrophobic hole blocking tool is characterized in that the fourth operating part is a prism body provided with a central through hole and an internal thread hole.
Novel SG hydrophobic hole blocking instrument in, the third operating parts is including consecutive first section, interlude and second section, first section top tightly in rubber seal sets up, the second section twist soon through screw-thread fit in the internal thread hole of fourth operating parts, the interlude outer peripheral face be with the prismatic face that fourth operating parts size is the same.
In the novel SG hydrophobic hole plugging tool of the present invention, the middle section and the outer peripheral surface of the fourth operation member are regular hexagonal prism surfaces each having a width of 24 mm.
In the novel SG drainage hole blocking tool, the diameter of the straight rod section is smaller than the inner diameter of the rubber sealing ring.
In the novel SG hydrophobic hole plugging tool of the present invention, the guide section is a tapered shape with a diameter gradually increasing from the head portion to the tail portion, and the tail portion of the guide section is connected to the straight rod section.
Novel SG hydrophobic hole blocks up instrument in, rubber seal's internal diameter is less than the maximum diameter of direction section, rubber seal's external diameter is greater than the maximum diameter of direction section.
The novel SG hydrophobic hole blocking tool in, the metal gasket with rubber seal's external diameter is the same, the third operating parts are close to the diameter of metal gasket's one end is less than metal gasket's diameter.
The utility model provides a novel hydrophobic hole of SG blocks up instrument compares prior art and has following beneficial effect:
1. The quantity of spare part has been optimized, makes the structure simpler, and it is more convenient to operate, can improve operating personnel's installation effectiveness to reduce former specialized tool's fault rate, simultaneously, still reduced the degree of difficulty and the purchasing cost of preparation processing.
2. The matching mode of parts is optimized, the fourth operating piece and the core bar are redesigned under the condition of ensuring the original function, the core bar is integrally processed by steel, the structure is simple, and the processes such as splicing, welding and the like are not needed in the later stage; the fourth operating piece and the third operating piece are matched by reverse threads, the right-handed screwing habit is met, the stress of the core rod is vertical tension when the core rod is operated and used, and the phenomenon that the existing SG drainage hole plugging tool is bent and deformed by transverse shearing force is thoroughly changed.
3. The assembly and disassembly are convenient, and the installation can be directly operated by hands without an additional tool; all parts can be disassembled and then assembled without welding; the core rod and the rubber sealing ring can be detached and replaced, the special tool can be repeatedly used, the overhauling process is greatly convenient to simplify, and the maintenance and use cost is reduced.
drawings
The invention will be further explained with reference to the drawings and examples, wherein:
Fig. 1 is a schematic structural view of a conventional SG hydrophobic pore plugging tool;
Fig. 2 is a schematic structural diagram of an embodiment of the present invention;
FIG. 3 is a schematic structural view of a core rod in an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a third operating member according to an embodiment of the present invention;
Fig. 5 is a schematic structural diagram of a fourth operating element according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 2, the novel SG hydrophobic hole plugging tool provided by the embodiment of the present invention includes a core bar 11, a rubber seal 12, a third operating element 13, a fourth operating element 14, a metal gasket 15, and a fastening nut 16. The core rod 11 is made of steel integrally, the structure is simple, the strength is high, and the process treatments such as splicing and welding are not needed in the later period. As shown in fig. 3, the core rod 11 specifically includes a guiding section 111 for guiding, and a cylindrical straight rod section 112 with a head connected to the guiding section 111 and a tail provided with a thread 113. The rubber seal ring 12, the metal gasket 15, the through holes matched with the size and shape of the straight rod section 112 are formed in the middle of the third operating element 13 and the fourth operating element 14, so that the rubber seal ring 12, the metal gasket 15, the third operating element 13 and the fourth operating element 14 can be sequentially and movably sleeved on the straight rod section 112 along the direction from the head to the tail of the straight rod section 112, the third operating element 13 and the fourth operating element 14 are connected in a matched mode through reverse threads, the fastening nut 16 is matched with the threads 113 at the tail of the straight rod section 112 and screwed on the core rod 11, and the fourth operating element 14 is locked and cannot move outwards. Because the third operating element 13 and the fourth operating element 14 are connected in a matched manner through reverse threads, the third operating element 13 is pushed forwards by screwing the fourth operating element 14, and the third operating element is pushed towards the guide section of the core rod 11 to extrude the metal gasket 15 and the rubber sealing ring 12, and the rubber sealing ring 12 is stressed to expand and deform, so that the purpose of sealing the drain hole of the lower end socket of the evaporator is achieved.
Specifically, as shown in fig. 4, the third operating member 13 is also integrally formed, and includes a first section 131, a middle section 132 and a second section 133 connected in sequence. When the rubber sealing ring plugging device is used, the first section 131 is arranged close to the metal gasket 15, the diameter of the first section 131 is slightly smaller than that of the metal gasket 15, and the outer diameters of the metal gasket 15 and the rubber sealing ring 12 are the same, so that the rubber sealing ring 12 can be completely extruded by the first section 131 and the metal gasket 15, the periphery of the rubber sealing ring 12 is stressed to deform uniformly, and the plugging effect of the rubber sealing ring is ensured. The middle section 132 is a hand-held position of an operator when in use, and has a diameter larger than the diameters of the first section 131 and the second section 133, and the outer peripheral surface of the middle section 132 in this embodiment is a regular hexagonal prism surface with a width of 24mm, which is the same as the outer peripheral surface of the fourth operating element 14 in size and shape, so that the operator can directly hold the outer peripheral surfaces of the middle section 132 and the fourth operating element 14 by hand to perform screwing operation without using additional tools, which is very convenient and saves time. The second section 133 has a cylindrical shape having the same diameter as the first section 131, and has an external thread formed on the outer circumference thereof. As shown in fig. 5, the fourth operating element 14 is generally sleeve-shaped, and an opening at one end has an inner diameter matched with the diameter of the second section 133 and is provided with an internal thread matched with the external thread, so that the second section 133 can be screwed into the fourth operating element 14. When the rubber seal ring is used, the first section 131 of the third operating element 13 abuts against the metal gasket 15, one end of the fourth operating element 14 is screwed on the second section 133 of the third operating element 13, the other end of the fourth operating element 14 is locked by the fastening nut 16, and the third operating element 13 can be pushed forward by screwing the fourth operating element 14, so that the metal gasket 15 is forced to extrude the rubber seal ring 12 to deform. Since the third operating member 13 is relatively long and not easy to operate, the middle section 132 of the third operating member 13 is held by one hand of the operator to prevent the third operating member from rotating during use, while the fourth operating member 14 is relatively short and small to facilitate force application and operation, and the fourth operating member 14 can be easily pushed forward to squeeze the rubber seal 12 to deform by screwing the fourth operating member 14 with the other hand through the cooperation of the reverse threads.
Further, the mating thread between the second segment 133 and the fourth operating member 14 in this embodiment is M16 reverse thread, which can reduce the number of turns by increasing the pitch, and the reverse thread design is consistent with the right-hand tightening habit. In this embodiment, the diameter of the straight rod section 112 is smaller than the inner diameter of the rubber seal 12, so that the rubber seal 12 can be removed from the core rod 11 for replacement. The whole guide section 111 is in a conical shape with the diameter gradually increasing from the head to the tail, the tail of the guide section 111 is connected with the straight rod section 112, the inner diameter of the rubber sealing ring 12 is smaller than the maximum diameter of the guide section 111, and the outer diameter of the rubber sealing ring 12 is larger than the maximum diameter of the guide section 111, so that the rubber sealing ring 12 can be clamped and deformed between the guide section 111 and the metal gasket 15 under stress, and the rubber sealing ring is prevented from being separated from the guide section 111; the diameter of the guide section 111 is set slightly smaller than the outer diameter of the rubber seal 12, so that the guide section 111 does not interfere with the sealing of the rubber seal 12.
The novel SG drainage hole blocking tool provided by the embodiment optimizes the number of parts, so that the structure is simpler, the operation is more convenient, the installation efficiency of operators can be improved, the fault rate of an original special tool is reduced, and meanwhile, the difficulty in manufacturing and processing and the purchase cost are reduced; the matching mode of parts is optimized, the fourth operating piece and the core bar are redesigned under the condition of ensuring the original function, the core bar is integrally processed by steel, the structure is simple, and the processes such as splicing, welding and the like are not needed in the later stage; the fourth operating piece and the third operating piece are matched by reverse threads, the right-handed screwing habit is met, the stress of the core rod is a vertical tensile force when the core rod is operated and used, and the phenomenon that the existing SG drainage hole plugging tool is bent and deformed by transverse shearing force is thoroughly changed; the assembly and disassembly are convenient, and the installation can be directly operated by hands without an additional tool; all parts can be disassembled and then assembled without welding; the core rod and the rubber sealing ring can be detached and replaced, the special tool can be repeatedly used, the overhauling process is greatly convenient to simplify, and the maintenance and use cost is reduced.
The embodiments of the present invention have been described with reference to the accompanying drawings, but the present invention is not limited to the above-mentioned embodiments, which are only illustrative and not restrictive, and those skilled in the art can make many forms without departing from the spirit and scope of the present invention, and all of them fall within the protection scope of the present invention.
Claims (9)
1. The utility model provides a novel SG hydrophobic hole blocks up instrument, its characterized in that, including integrated into one piece's core bar, rubber seal, metal gasket, third operating parts, fourth operating parts and fastening nut, the core bar including be used for the direction section and the head with the direction section links to each other, the afterbody is equipped with the screwed straight pole section, rubber seal, metal gasket, third operating parts and fourth operating parts are established along straight pole section head to the direction of afterbody in proper order the movable sleeve establish straight pole section is last, just link to each other through reverse screw-thread fit between third operating parts and the fourth operating parts, fastening nut follows the afterbody of straight pole section will fourth operating parts locking is used for preventing the fourth operating parts is retreated, revolves to twist the fourth operating parts will make the third operating parts impels the extrusion forward metal gasket and rubber seal.
2. The novel SG hydrophobic hole plugging tool of claim 1, wherein the mating thread between said third and fourth operating members is M16 reverse thread.
3. The novel SG hydrophobic hole plugging tool of claim 1, wherein said fourth operating member is prism shaped with a central through hole and an internally threaded hole.
4. The novel SG hydrophobic hole blocking tool of claim 3, wherein the third operating element comprises a first section, a middle section and a second section which are connected in sequence, the first section is arranged to be pressed against the rubber sealing ring, the second section is screwed into an internal threaded hole of the fourth operating element through threaded fit, and the outer peripheral surface of the middle section is a prismatic surface with the same size as the fourth operating element.
5. The novel SG hydrophobic hole plugging tool according to claim 4, wherein the outer peripheral surfaces of said middle section and said fourth operation member are each a regular hexagonal prism surface 24mm wide.
6. The novel SG hydrophobic hole plugging tool of claim 1, wherein the diameter of said straight rod section is smaller than the inner diameter of said rubber sealing ring.
7. The novel SG hydrophobic hole plugging tool of claim 1, wherein said guide section is overall in a tapered shape with a diameter gradually increasing from a head to a tail, and the tail of said guide section is connected to said straight rod section.
8. the novel SG hydrophobic bore plugging tool of claim 5, wherein an inner diameter of the rubber sealing ring is smaller than a maximum diameter of the guide section, and an outer diameter of the rubber sealing ring is larger than the maximum diameter of the guide section.
9. The novel SG hydrophobic hole plugging tool according to claim 1, wherein the metal gasket has the same outer diameter as the rubber sealing ring, and the diameter of the end of the third operating member near the metal gasket is smaller than the diameter of the metal gasket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920309188.6U CN209763022U (en) | 2019-03-12 | 2019-03-12 | Novel SG drainage hole blocking tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920309188.6U CN209763022U (en) | 2019-03-12 | 2019-03-12 | Novel SG drainage hole blocking tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209763022U true CN209763022U (en) | 2019-12-10 |
Family
ID=68754644
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920309188.6U Active CN209763022U (en) | 2019-03-12 | 2019-03-12 | Novel SG drainage hole blocking tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209763022U (en) |
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2019
- 2019-03-12 CN CN201920309188.6U patent/CN209763022U/en active Active
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