CN214978224U - Annular mounting seat of large-scale shielding main pump sealing ring cutting tool - Google Patents
Annular mounting seat of large-scale shielding main pump sealing ring cutting tool Download PDFInfo
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- CN214978224U CN214978224U CN202121775970.0U CN202121775970U CN214978224U CN 214978224 U CN214978224 U CN 214978224U CN 202121775970 U CN202121775970 U CN 202121775970U CN 214978224 U CN214978224 U CN 214978224U
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Abstract
The utility model belongs to the technical field of nuclear power station shielding main pump maintenance, and particularly discloses an annular mounting seat of a large-scale shielding main pump sealing ring cutting tool, which comprises a fixed outer ring, a movable inner ring, a connecting piece and a driving and rotating mechanism; the fixed outer ring is of an annular structure with an upper opening and an inner diameter larger than that of the sealing ring; the movable inner ring is used for mounting a cutting tool and is erected on the fixed outer ring, and an annular slideway is formed in the inner wall of the movable inner ring; the connecting piece is arranged between the fixed outer ring and the movable inner ring, the bottom of the connecting piece is fixedly arranged on the fixed outer ring, and the top of the connecting piece is connected with the annular slideway in a sliding manner; the driving mechanism is used for driving the movable inner ring to rotate. The utility model discloses annular mount pad operating stability is good, can effectively promote the cutting efficiency and the cutting effect of sealing ring.
Description
Technical Field
The utility model belongs to the technical field of the maintenance of nuclear power station shielding main pump, concretely relates to large-scale shielding main pump sealing ring cutting tool's annular mount pad.
Background
The nuclear power station shielding main pump is used for conveying high-pressure, high-temperature, high-radiation and large-flow reactor coolant, and for preventing coolant leakage, a C-shaped sealing ring is arranged between a pump shell and a stator flange end ring of the shielding main pump, the nuclear power station shielding main pump is in service under extreme working conditions for a long time, the nuclear power station shielding main pump is indispensable to overhaul and maintain the nuclear power station shielding main pump in the operation process, when the shielding main pump is overhauled, the surface of the stator flange end ring needs to be turned after the pump shell is detached, and the residual C-shaped sealing ring is removed.
Currently, the cutting of the sealing ring in the canned motor pump is generally realized by the following processes: an annular track is arranged on the periphery of the sealing ring, a cutting tool with a tool bit position capable of being automatically adjusted is arranged on the annular track and is in sliding connection with the annular track, and a transmission part is arranged between the annular track and the cutting tool to drive the cutting tool to move along the annular track, so that annular cutting of the C-shaped sealing ring is realized. In the cutting process of the sealing ring, the annular track not only plays a role of bearing the cutting tool, but also more importantly is in transmission fit with the cutting tool to drive the cutting tool to rotate, so that the requirements on the processing precision of the annular track and the fit precision of the annular track and the cutting tool are extremely high, the running stability is poor during practical application, the cutting tool is easy to generate clamping stagnation, and the cutting efficiency and the cutting effect are influenced.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model provides a large-scale shielding main pump sealing ring cutting tool's annular mount pad, operating stability is good, can effectively promote the cutting efficiency and the cutting effect of sealing ring.
In order to achieve the above purpose, the utility model adopts the following specific technical scheme:
an annular mounting seat for a large-scale shielded main pump sealing ring cutting tool, comprising:
the fixed outer ring is of an annular structure with an upper opening and an inner diameter larger than that of the sealing ring;
the movable inner ring is used for mounting a cutting tool and is erected on the fixed outer ring, and the inner wall of the movable inner ring is provided with an annular slideway;
the connecting piece is arranged between the fixed outer ring and the movable inner ring, the bottom of the connecting piece is fixedly arranged on the fixed outer ring, and the top of the connecting piece is connected with the annular slideway in a sliding manner;
and the driving mechanism is used for driving the movable inner ring to rotate.
The utility model discloses above-mentioned annular mount pad is through the design of activity inner circle, fixed outer lane, connecting piece, the combination of drive commentaries on classics mechanism, make the activity inner circle can realize self rotation in fixed outer lane, and cutting tool installs and circles in the activity, and naturally can be driven rotatoryly by the activity inner circle, and it is fixed with circular orbit among the prior art, drive the rotatory structure of cutting tool through cutting tool and circular orbit's transmission cooperation and compare, the utility model discloses save the drive disk assembly between track and the cutter, realized circular orbit and cutting tool are relatively independent, and the stability of cutter processing depends on circular orbit, realizes more easily, and the difficult jamming that takes place of cutter rotation cutting process, and operating stability is showing and promotes, and cutting efficiency improves greatly, and the steady operation that lasts of activity inner circle simultaneously also can improve cutting effect, makes cutting effect more thorough. The utility model discloses above-mentioned annular mount pad needs to be installed and uses on pump body main flange, and concrete mounting means can be directly arrange pump body main flange surface in (when annular mount pad dead weight greatly makes it can not take place the skew in the cutting process), can be in the flange hole that sets up a plurality of card plug-in components and pump body main flange and carry out the plug cooperation in fixed outer lane bottom, also can be through support piece with its support fix at pump body main flange surface, perhaps other modes that can fix annular mount pad in the sealing ring periphery.
Preferably, the movable inner ring comprises an inner ring part, an outer ring part and an upper cover part connecting the inner ring part and the outer ring part; the outer wall of outer ring portion is equipped with the ring gear, drive and change the mechanism including fixing spindle motor on the fixed outer lane and setting are in motor output shaft and with the gear of ring gear meshing.
Preferably, the annular slideway is arranged on the inner wall of the outer ring part; the connecting pieces are of a plurality of guide wheel structures which are arranged at intervals and are positioned between the inner ring part and the outer ring part; the guide wheel structure comprises a support, a wheel shaft arranged on the upper surface of the support, a fixed shaft arranged on the lower surface of the support and a horizontally arranged guide wheel rotationally connected to the wheel shaft; the guide wheel is in sliding fit with the annular slideway, and the bottom of the fixed shaft is fixedly connected with the fixed outer ring. The utility model discloses regard the guide pulley of above-mentioned structure as connecting piece and annular slide sliding fit, compare with conventional guide rail, slider complex structure, the installation is simpler, and the running resistance is little and difficult wearing and tearing.
Preferably, a closed space is formed between the fixed outer ring and the movable inner ring, and the outer ring part is arranged in the closed space. Such lid of annular mount pad closes the structure including ring gear, annular slide, guide pulley all inclusion for these parts are difficult for advancing the foreign matter, avoid the activity inner circle to take place the jamming or stall, can prolong the maintenance cycle simultaneously, reduce the maintenance degree of difficulty, and also make things convenient for the buried line moreover.
Preferably, a plurality of mounting holes are formed in the fixed outer ring, and the bottom of the fixed shaft penetrates through the mounting holes and is locked by the fixed nuts. Although the bottom of the guide wheel structure can be connected with the fixed outer ring in fixedly connecting modes such as clamping and inserting, the mode of locking by the fixed nut is more convenient to adjust, and the flexibility is higher.
Preferably, said connecting piece comprises 2 concentric wheels and at least 1 eccentric wheel; the axle and the fixed axle of the concentric wheel are coaxial, and the axle center of the fixed axle of the eccentric wheel deviates from the axle center of the axle. Because inevitable machining errors and assembly errors exist among the guide wheel structure, the fixed inner ring and the movable outer ring, if concentric wheels are adopted, a gap influencing cutting machining exists between the guide wheel structure and the movable inner ring, and a cutter point and a pump body can be damaged seriously; because the position of a circle can be determined by three points, the invention adopts 2 concentric wheels and at least 1 eccentric wheel, the general position of the movable inner ring is rapidly determined by the 2 concentric wheels during assembly, and the specific position of the movable inner ring is finely adjusted by the eccentric wheel, so that the movable inner ring can be accurately positioned, and the conditions of jumping, jamming and the like do not occur when the movable inner ring rotates at any angle.
Preferably, the number of the concentric wheels is 2, and the number of the eccentric wheels is 34; 2 concentric wheels are installed at intervals of 1 eccentric wheel.
Preferably, a shaft sleeve is sleeved on the wheel shaft, a plurality of idler wheels are arranged between the shaft sleeve and the guide wheel, a threaded hole is formed in the top of the wheel shaft, and a compression screw used for fixing the shaft sleeve is installed at the position of the threaded hole. The structure arrangement realizes the rotary connection of the guide wheel and the wheel shaft.
Preferably, the annular slide way is a V-shaped slide way; the guide wheel is a W-shaped wheel, and the W-shaped outer side edge of the guide wheel is arranged in the V-shaped slideway. The matching arrangement of the W wheel and the V-shaped slideway can improve the running speed of the movable inner ring, and meanwhile, the running stability is not influenced.
Preferably, the guide wheel is provided with a grease adding port, so that the maintenance is facilitated.
The utility model discloses following beneficial effect has:
1. the utility model discloses above-mentioned annular mount pad is through the design of activity inner circle, fixed outer lane, connecting piece, the combination of drive commentaries on classics mechanism for the activity inner circle can realize self rotation in fixed outer lane, and cutting tool fixed mounting circles in the activity and is driven rotatoryly by it during the actual application, and such structural design compares with the annular track structure that current needs are connected with the cutting tool transmission, and operating stability promotes greatly, and then effectively promotes cutting efficiency and cutting effect.
2. The utility model discloses a guide pulley structure that a plurality of intervals set up realizes the sliding fit of activity inner circle and fixed outer lane as the connecting piece, compares with conventional guide rail, slider complex structure, and the flexibility ratio is higher, and the installation is simpler, and the running resistance is little and difficult wearing and tearing, and the steady operation cycle is long.
3. The guide wheel structure of the utility model adopts the design of combining the concentric wheel and the eccentric wheel, thereby effectively reducing the installation difficulty of the annular installation seat, ensuring that the movable inner ring can be accurately positioned and avoiding the conditions of jumping, jamming and the like when rotating by any angle; the problem of knife tip and pump body damage caused by inaccurate installation of the movable inner ring is also avoided.
4. The utility model discloses a V type slide is as annular slide, and the W wheel is as guide pulley and V type slide sliding fit, can improve the running speed of activity inner circle, does not influence operation stability simultaneously.
5. The annular mounting seat of the utility model is provided with the gear ring, the annular slideway and the guide wheel which are all included by the design that the movable inner ring covers and fixes the outer ring, so that foreign matters are not easy to enter the parts, and the movable inner ring is prevented from being blocked or stalling; meanwhile, the maintenance period can be prolonged, and the maintenance difficulty is reduced; but also is convenient for burying the wire.
6. The utility model discloses the installation that not only is applicable to the cutting tool of stator flange end links department sealing ring also can popularize and use the cutting tool's in other application scenes that have the annular cutting demand installation.
Drawings
FIG. 1: embodiment 1 describes a three-dimensional structure diagram of an annular mounting seat of a large-scale shielding main pump sealing ring cutting tool.
FIG. 2: fig. 1 is a cross-sectional view.
FIG. 3: an enlarged view at a in fig. 2.
FIG. 4: the structure of the movable inner ring in example 1 is a three-dimensional structure.
FIG. 5: fig. 4 is a cross-sectional view.
FIG. 6: the solid structure of the fixed outer ring in embodiment 1.
FIG. 7: the structure of the guide wheel in the embodiment 1 is schematically shown.
FIG. 8: fig. 7 is a cross-sectional view.
FIG. 9: fig. 8 is an enlarged schematic view at B.
FIG. 10: the application of the annular mounting seat of the large-scale shielding main pump sealing ring cutting tool in the embodiment 1 is shown.
In the figure: 1-annular mounting seat, 11-fixed outer ring, 12-movable inner ring, 13-connecting piece, 14-driving mechanism, 111-mounting hole, 121-inner ring part, 122-outer ring part, 123-upper cover part, 124-gear ring, 125-annular slideway, 131-support, 132-wheel shaft, 133-fixed shaft, 134-guide wheel, 135-fixed nut, 136-shaft sleeve, 137-roller, 138-compression screw, 139-limiting groove, 13 a-concentric wheel, 13 b-eccentric wheel, 141-spindle motor and 142-gear; 2-cutting tool, 3-supporting piece, 4-stator flange end ring, 5-C type sealing ring and 6-pump body main flange.
Detailed Description
The invention is further described with reference to the following figures and specific embodiments.
Example 1
An annular mounting seat of a large-scale shielding main pump sealing ring cutting tool is shown in figures 1-2 and comprises a fixed outer ring 11, a movable inner ring 12, a connecting piece 13 and a driving mechanism 14; the fixed outer ring 11 is an annular structure with an upper opening and an inner diameter larger than that of the sealing ring; the movable inner ring 12 is used for mounting a cutting tool and is arranged on the fixed outer ring 11, and the inner wall of the movable inner ring is provided with an annular slideway 125; the connecting piece 13 is arranged between the fixed outer ring 11 and the movable inner ring 12, the bottom of the connecting piece is fixedly arranged on the fixed outer ring 11, and the top of the connecting piece is connected with the annular slideway 125 in a sliding manner; the driving mechanism 14 is used for driving the movable inner ring 12 to rotate.
As shown in fig. 3 to 6, the movable inner ring 12 includes an inner ring portion 121, an outer ring portion 122, and an upper cover portion 123 connecting the inner ring portion 121 and the outer ring portion 122; a closed space is formed between the fixed outer ring 11 and the movable inner ring 12, and the outer ring part 122 is arranged in the closed space; the outer wall of the outer ring part 122 is provided with a gear ring 124, and the driving mechanism 14 includes a spindle motor 141 fixedly mounted on the fixed outer ring 11 and a gear 142 arranged on an output shaft of the spindle motor 141 and engaged with the gear ring 124; the annular slide 125 is disposed on an inner wall of the outer ring 122.
The connecting members 13 are a plurality of guide wheel structures arranged at intervals between the inner ring portion 121 and the outer ring portion 122, and the guide wheel structures, as shown in fig. 3, 7 and 8, comprise a support 131, a wheel axle 132 arranged on the upper surface of the support 131, a fixed axle 133 arranged on the lower surface of the support 131, and a horizontally arranged guide wheel 134 rotatably connected to the wheel axle 132; more specifically, a shaft sleeve 136 is sleeved on the wheel shaft 132, a plurality of rollers 137 are circumferentially arranged between the shaft sleeve 136 and the guide wheel 134, a threaded hole is formed in the top of the wheel shaft 132, and a compression screw 138 for fixing the shaft sleeve 136 is installed at the position of the threaded hole; the outer periphery of the inner bushing 136 and the inner periphery of the guide wheel 134 are respectively provided with an annular limiting groove 139 (as shown in fig. 9) for placing two ends of the roller 137; the guide wheel 134 is in sliding fit with the annular slideway 125, and the bottom of the fixed shaft 133 passes through the mounting hole 111 formed on the fixed outer ring 11 and is locked by a fixed nut 135. In this embodiment, the annular slide 125 is a V-shaped slide; the guide wheel 134 is a W-shaped wheel, the W-shaped outer side edge of the W-shaped wheel is installed in the V-shaped slideway, and two rows of rollers 137 are correspondingly arranged.
The guide wheel structures comprise 2 concentric wheels 13a and at least 1 eccentric wheel 13b, the wheel shaft 132 and the fixed shaft 133 of the concentric wheels 13a are coaxial, and the shaft center of the fixed shaft 133 of the eccentric wheel 13b is deviated from the shaft center of the wheel shaft 132; in the embodiment, 2 concentric wheels 13a and 34 eccentric wheels 13b are arranged, the 2 concentric wheels 13a are installed at intervals of a plurality of eccentric wheels 13b, the general position of the movable inner ring 12 is quickly determined by the 2 concentric wheels 13a in the assembly process, and the specific position of the movable inner ring 12 is finely adjusted by adjusting the position of the wheel shaft 132 of the 34 eccentric wheels 13b, so that the movable inner ring 12 can be accurately positioned, and the conditions of jumping, jamming and the like do not occur when the movable inner ring rotates at any angle.
The specific assembling method of the annular mounting seat of the large-scale shielding main pump sealing ring cutting tool comprises the following steps: placing the fixed outer ring 11 on an overhaul platform, installing 2 concentric wheels 13a on the fixed outer ring 11, simultaneously placing 34 eccentric wheels 13b in the installation holes 111 of the fixed outer ring 11, adjusting the angles of the eccentric wheels, deviating the guide wheels 134 of all the eccentric wheels 13b to the center of the fixed outer ring 11, hoisting the movable inner ring 12, and adjusting the position of the movable inner ring 12 to ensure that the guide wheels 134 of the 2 concentric wheels 13a are assembled on an annular slide way 125 on the movable inner ring 12; at the moment, all the guide wheels 134 are arranged in the annular slideway 125 by adjusting 34 eccentric wheels 13b, and meanwhile, a dial indicator is erected to check the concentricity of the fixed outer ring 11 and the movable inner ring 12, if the concentricity does not meet the requirement, the 34 eccentric wheels 13b are continuously adjusted until the requirement is met; and then the spindle motor 141 with the gear 142 mounted on the output shaft is mounted on the side wall of the fixed outer ring 11 through bolts, so that the assembly of the annular mounting seat is completed.
The embodiment also provides an application example of the annular mounting seat of the large-scale shielding main pump sealing ring cutting tool, as shown in fig. 10, specifically, a cutting tool 2 is mounted on an assembled annular mounting seat 1, a C-shaped sealing ring 5 on a stator flange end ring 4 in a shielding main pump is cut, and a pump body main flange 6 is sleeved on the outer periphery of the stator flange end ring 5; the 11 bottoms of fixed outer lane of annular mount pad 1 support annular mount pad 1 fixedly through a plurality of support piece 3 of bolt fixed mounting: the bottom surface of the support piece 3 is abutted against a pump body main flange 6, and the inner side surface is tightly attached to a stator flange end ring 4 through a tightening screw rod. In operation, circular cutting is achieved by turning on the motor 14.
This detailed description is to be construed as illustrative only and not limiting, and any changes that may be made by a person skilled in the art after reading the present disclosure are intended to be protected by the patent laws within the scope of the appended claims.
Claims (10)
1. The utility model provides a large-scale shielding main pump sealing ring cutting tool's annular mount pad which characterized in that: the method comprises the following steps:
the fixed outer ring (11) is of an annular structure with an upper opening and an inner diameter larger than that of the sealing ring;
the movable inner ring (12) is used for mounting a cutting tool and is erected on the fixed outer ring (11), and the inner wall of the movable inner ring is provided with an annular slideway (125);
the connecting piece (13) is arranged between the fixed outer ring (11) and the movable inner ring (12), the bottom of the connecting piece is fixedly arranged on the fixed outer ring (11), and the top of the connecting piece is connected with the annular slide way (125) in a sliding manner;
and the driving mechanism (14) is used for driving the movable inner ring (12) to rotate.
2. The annular mounting seat for a large-scale shielded main pump sealing ring cutting tool according to claim 1, wherein: the movable inner ring (12) comprises an inner ring part (121), an outer ring part (122) and an upper cover part (123) connecting the inner ring part (121) and the outer ring part (122); the outer wall of outer ring portion (122) is equipped with ring gear (124), drive mechanism (14) including fix spindle motor (141) on fixed outer lane (11) and set up in motor (141) output shaft and with gear (142) of ring gear (124) meshing.
3. The annular mounting seat for a large-scale shielded main pump sealing ring cutting tool according to claim 2, wherein: the annular slideway (125) is arranged on the inner wall of the outer ring part (122); the connecting pieces (13) are a plurality of guide wheel structures which are arranged at intervals and are positioned between the inner ring part (121) and the outer ring part (122); the guide wheel structure comprises a support (131), a wheel shaft (132) arranged on the upper surface of the support (131), a fixed shaft (133) arranged on the lower surface of the support (131), and a horizontally arranged guide wheel (134) rotatably connected to the wheel shaft (132); the guide wheel (134) is in sliding fit with the annular slide way (125), and the bottom of the fixed shaft (133) is fixedly connected with the fixed outer ring (11).
4. The annular mounting seat of a large-scale shielding main pump sealing ring cutting tool according to claim 2 or 3, characterized in that: a closed space is formed between the fixed outer ring (11) and the movable inner ring (12), and the outer ring part (122) is arranged in the closed space.
5. The annular mounting seat for a large-scale shielded main pump sealing ring cutting tool according to claim 3, wherein: a plurality of mounting holes (111) are formed in the fixed outer ring (11), and the bottom of the fixed shaft (133) penetrates through the mounting holes (111) and is locked by fixing nuts (135).
6. The annular mounting seat for a large-scale shielded main pump sealing ring cutting tool according to claim 5, wherein: said connecting piece (13) comprising 2 concentric wheels (13 a) and at least 1 eccentric wheel (13 b); the axle (132) and the fixed axle (133) of the concentric wheel (13 a) are coaxial, and the axle center of the fixed axle (133) of the eccentric wheel (13 b) deviates from the axle center of the axle (132).
7. The annular mounting seat for a large-scale shielded main pump sealing ring cutting tool according to claim 6, wherein: the number of the concentric wheels (13 a) is 2, and the number of the eccentric wheels (13 b) is 34; 2 of said concentric wheels (13 a) are mounted at least 1 eccentric wheel (13 b) apart.
8. The annular mounting seat for a large-scale shielded main pump sealing ring cutting tool according to claim 3, wherein: the wheel shaft (132) is sleeved with a shaft sleeve (136), a plurality of rollers (137) are arranged between the shaft sleeve (136) and the guide wheel (134), the top of the wheel shaft (132) is provided with a threaded hole, and a compression screw (138) used for fixing the shaft sleeve (136) is installed at the position of the threaded hole.
9. The annular mounting seat for a large-scale shielded main pump sealing ring cutting tool according to claim 3, wherein: the annular slideway (125) is a V-shaped slideway; the guide wheel (134) is a W-shaped wheel, and the W-shaped outer side edge of the W-shaped wheel is installed in the V-shaped slide way.
10. The annular mounting seat for a large-scale shielded main pump sealing ring cutting tool according to claim 3, wherein: the guide wheel (134) is provided with a grease adding port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121775970.0U CN214978224U (en) | 2021-08-02 | 2021-08-02 | Annular mounting seat of large-scale shielding main pump sealing ring cutting tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121775970.0U CN214978224U (en) | 2021-08-02 | 2021-08-02 | Annular mounting seat of large-scale shielding main pump sealing ring cutting tool |
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| CN214978224U true CN214978224U (en) | 2021-12-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202121775970.0U Active CN214978224U (en) | 2021-08-02 | 2021-08-02 | Annular mounting seat of large-scale shielding main pump sealing ring cutting tool |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117564607A (en) * | 2024-01-16 | 2024-02-20 | 山西双环重工集团有限公司 | Repair equipment for large flange waste and large flange processing system |
| CN117718535A (en) * | 2024-02-07 | 2024-03-19 | 无锡通伟电力设备有限公司 | Edge cutting device for copper end ring machining |
-
2021
- 2021-08-02 CN CN202121775970.0U patent/CN214978224U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117564607A (en) * | 2024-01-16 | 2024-02-20 | 山西双环重工集团有限公司 | Repair equipment for large flange waste and large flange processing system |
| CN117564607B (en) * | 2024-01-16 | 2024-04-26 | 山西双环重工集团有限公司 | Repair equipment for large flange waste and large flange processing system |
| CN117718535A (en) * | 2024-02-07 | 2024-03-19 | 无锡通伟电力设备有限公司 | Edge cutting device for copper end ring machining |
| CN117718535B (en) * | 2024-02-07 | 2024-05-07 | 无锡通伟电力设备有限公司 | Edge cutting device for copper end ring machining |
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