CN218984717U - Maintenance support combined structure of nuclear power circulating water pump - Google Patents
Maintenance support combined structure of nuclear power circulating water pump Download PDFInfo
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- CN218984717U CN218984717U CN202320118411.5U CN202320118411U CN218984717U CN 218984717 U CN218984717 U CN 218984717U CN 202320118411 U CN202320118411 U CN 202320118411U CN 218984717 U CN218984717 U CN 218984717U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 28
- 238000012423 maintenance Methods 0.000 title claims abstract description 18
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 230000000712 assembly Effects 0.000 claims description 6
- 238000000429 assembly Methods 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000037396 body weight Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
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Abstract
The utility model provides an overhaul support combination structure of a nuclear power circulating water pump, which comprises a first support, a second support and a third support; the first bracket is a hollow square frame formed by four first upright posts and a first cross beam, four first supporting plates extend out of the square frame to support four supporting points of the pump cover, one of two impeller supporting beams is connected with two first upright posts, the other one is connected with the other two first upright posts, and a space for accommodating impellers is formed by the four first supporting plates and the square frame; the second bracket is formed into a hollow square frame by four second upright posts and a second cross beam, and four second supporting sheets extend out of the square frame towards four supporting points for supporting the pump cover; the third bracket is formed into a hollow square frame by four third upright posts and third cross beams, and one of the two rotor assembly supporting beams is connected with the two third upright posts and the other one is connected with the other two third upright posts to form a space for accommodating the rotor assembly with the square frame. By implementing the utility model, parts can be stored in sequence, so that the maintenance difficulty is reduced, and the risk of high-altitude operation and the risk of lifting appliance disassembly and assembly are reduced.
Description
Technical Field
The utility model relates to the technical field of maintenance of nuclear power mechanical equipment, in particular to a maintenance support combined structure of a nuclear power circulating water pump.
Background
The nuclear power circulating water pump provides a cold source for the unit condenser. In view of the importance of the nuclear power circulating water pump, the power station can execute preventive and comprehensive disassembly maintenance work of the circulating water pump every 10 years. In addition, when the maintenance period is not reached but serious defects occur, the nuclear power circulating water pump is required to be completely disassembled for maintenance.
At present, a common CR1QS1 type nuclear power circulating water pump is a vertical, single-stage and bottom suction concrete volute type centrifugal pump, the pump body weight is 25.8 tons, and the volume is huge. In the prior art, when the nuclear power circulating water pump is completely disassembled and overhauled, the operation is carried out through a traveling crane with a fixed height (such as 17.2 meters), and parts such as an impeller, a pump cover, a bearing assembly, a pump shaft and the like are disassembled in sequence to carry out the overhauling, but the following defects exist in the mode: (1) The lifting appliance is limited by the running height, the lifting appliance needs to be frequently disassembled, and the high-place operation risk and the lifting appliance disassembly risk exist; (2) Parts are overhauled at the same position, so that the currently overhauled parts are required to be moved out before the next parts are overhauled, and overhauling is difficult.
Therefore, it is necessary to design a nuclear power circulating water pump's maintenance support integrated configuration, can deposit in proper order and dismantle spare parts such as impeller, pump cover for reduce maintenance difficulty, need not frequently dismantle the hoist, reduce overhead operation risk and hoist dismouting risk.
Disclosure of Invention
The technical problem to be solved by the embodiment of the utility model is to provide the overhaul support combined structure of the nuclear power circulating water pump, which can be used for sequentially storing and disassembling parts such as impellers, pump covers and the like, so as to reduce overhaul difficulty, avoid frequent disassembly of a lifting appliance, and reduce high-altitude operation risks and lifting appliance disassembly risks.
In order to solve the technical problems, an embodiment of the present utility model provides a maintenance support combination structure of a nuclear power circulating water pump, including:
the first bracket is used for storing impellers and comprises four first upright posts, four first cross beams, four first supporting sheets and two impeller supporting beams; the four first upright posts are erected on the ground and are arranged along four corners of a square with a first preset area, and the bottoms of two adjacent four first upright posts are respectively fixedly connected with a first cross beam through corresponding connection to form a hollow square frame; one end of each of the four first supporting sheets is fixed at the top of each of the four first upright posts, and the other end extends towards the axis of the central point of the first bracket for a certain length to form a supporting point for supporting the pump cover; one impeller supporting beam is fixedly connected to the middle parts of two adjacent first upright posts in the four first upright posts and positioned on the side face in the direction of the central point of the first bracket, and the other impeller supporting beam is fixedly connected to the middle parts of the other two adjacent first upright posts in the four first upright posts and positioned on the side face in the direction of the central point of the first bracket; the space for accommodating the impellers is formed between the four first upright posts and the two impeller supporting beams;
the second bracket is used for storing the pump cover and comprises four second upright posts, four second cross beams and four second supporting sheets; the four second upright posts are erected on the ground and are arranged along four corners of a square with a second preset area, and after the middle parts of two adjacent ones of the four second upright posts are respectively fixed through corresponding connection with a second cross beam, a hollow square frame is formed; one end of each of the four second supporting sheets is fixed at the top of each of the four second upright posts, and the other end extends towards the axis of the center point of the second bracket for a certain length to form a supporting point for supporting the pump cover; and
a third rack for storing rotor assemblies of the split pump, the third rack comprising four third posts, four third cross beams, and two rotor assembly support beams; the four third upright posts are erected on the ground and are arranged along four corners of a square with a third preset area, and the bottoms of two adjacent four third upright posts are respectively fixed by a third cross beam correspondingly connected with the bottoms of the two adjacent four third upright posts to form a hollow square frame; one rotor assembly supporting beam is fixedly connected to the side surface of two adjacent third upright posts in the direction of the central point of the third bracket, and the other rotor assembly supporting beam is fixedly connected to the side surface of the other two adjacent third upright posts in the direction of the central point of the third bracket; four third posts are formed with two rotor assembly support beams between them as spaces for accommodating the rotor assemblies.
The four first supporting sheets are arranged at equal heights and have the same structure; the two impeller supporting beams are arranged at equal heights and have the same structure; the four second supporting sheets are arranged at equal heights and have the same structure; the two rotor assembly support beams are arranged at equal heights and have the same structure.
The first bracket further comprises four impeller limiting blocks with the same structure; wherein,,
the two impeller limiting blocks are arranged on the side surface of one impeller supporting beam facing the corresponding two first supporting sheets, and a first interval is reserved between the two impeller limiting blocks;
the other two impeller limiting blocks are arranged on the side faces of the other impeller supporting beam, which face the corresponding two first supporting sheets, and a second interval which is equal to the first interval is reserved between the two impeller limiting blocks.
The first bracket further comprises four movable cross beams with the same structure; wherein,,
each movable cross beam is detachably arranged in the middle of two adjacent first upright posts and positioned on the side surface far away from the central point of the first bracket;
each movable cross beam is arranged at equal height, and the height of each movable cross beam is higher than the heights of the two impeller supporting beams.
Wherein, four first stands, four second stands and four third stands all adopt the square steel preparation of cavity to get final product.
The four first cross beams, four second cross beams, four third cross beams, four movable cross beams, two impeller supporting beams and two rotor assembly supporting beams are all made of channel steel.
The embodiment of the utility model has the following beneficial effects:
according to the utility model, through the first bracket for storing the impeller, the second bracket for storing the pump cover and the third bracket for storing the rotor component of the disassembly pump, parts such as the impeller, the pump cover and the like can be sequentially stored and disassembled, so that maintenance difficulty is reduced, a lifting appliance is not required to be frequently disassembled, high-altitude operation risks and lifting appliance disassembly risks are reduced, and the efficiency, safety and quality of the overall disassembly work of the circulating water pump are greatly improved.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are required in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that it is within the scope of the utility model to one skilled in the art to obtain other drawings from these drawings without inventive faculty.
Fig. 1 is a perspective view of a first bracket in a maintenance bracket combined structure of a nuclear power circulating water pump provided by an embodiment of the utility model;
fig. 2 is a perspective view of a second bracket in a maintenance bracket combination structure of a nuclear power circulating water pump provided in an embodiment of the utility model;
fig. 3 is a perspective view of a third bracket in a maintenance bracket combination structure of a nuclear power circulating water pump provided by the embodiment of the utility model.
Detailed Description
The present utility model will be described in further detail with reference to the accompanying drawings, for the purpose of making the objects, technical solutions and advantages of the present utility model more apparent.
As shown in fig. 1 to 3, in an embodiment of the present utility model, a maintenance support assembly structure for a nuclear power circulating water pump is provided, including:
the first bracket 1 for storing the impeller T comprises four first upright posts 11 which are arranged at equal heights and have the same structure, four first cross beams 12 which have the same structure, four first supporting sheets 13 which have the same structure and two impeller supporting beams 14 which have the same structure; wherein, the four first upright posts 11 stand on the ground and are arranged along four corners of a square with a first preset area (such as the cross section area of a reference impeller T), and after the bottoms of two adjacent ones of the four first upright posts 11 are fixed by corresponding connection with one first cross beam 12, a hollow square frame is formed; one end of each of the four first supporting pieces 13 is fixed on the top of each of the four first upright posts 11, and the other end extends towards the axis (such as the central axis vertical to the ground) where the central point of the first bracket 1 is located for a certain length to form a supporting point for supporting a pump cover so as to form a pump cover supporting platform when the whole nuclear power circulating water pump is hoisted; one impeller supporting beam 14 is fixedly connected to the middle parts of two adjacent first upright posts among the four first upright posts 11 and positioned on the side surface facing the direction of the central point of the first bracket 1, and the other impeller supporting beam 14 is fixedly connected to the middle parts of the other two adjacent first upright posts among the four first upright posts 11 and positioned on the side surface facing the direction of the central point of the first bracket 1, so that an impeller supporting platform for hoisting the nuclear power circulating water pump is formed; at this time, spaces for accommodating the impellers are formed between the four first uprights 11 and the two impeller support beams 14;
a second rack 2 for storing pump covers (not shown), the second rack 2 comprising four second upright posts 21 which are arranged at equal heights and have the same structure, four second cross beams 22 which have the same structure, and four second supporting sheets 23 which have the same structure; wherein the four second upright posts 21 stand on the ground and are arranged along four corners of a square of a second predetermined area (such as a cross-sectional area of a reference pump cover), and after the middle parts of two adjacent ones of the four second upright posts 21 are fixed by corresponding connection with one second cross beam 22, a hollow square frame is formed; one end of each of the four second supporting pieces 23 is fixed on the top of each of the four second upright posts 21, and the other end extends towards the axis (such as the central axis perpendicular to the ground) where the central point of the second bracket 2 is located for a certain length to form a supporting point for supporting the pump cover, so that a pump cover supporting platform is formed when the pump cover and the impeller are independently hoisted after the first bracket 1 is separated; and
a third rack 3 for storing rotor assemblies (not shown) of the disassembly pump, the third rack 3 including four third upright posts 31, four third cross beams 32 and two rotor assembly support beams 33, which are arranged at equal heights and have the same structure; wherein, the four third upright posts 32 stand on the ground and are arranged along four corners of a square with a third preset area (such as the cross-sectional area of the reference rotor assembly), and after the bottoms of two adjacent ones of the four third upright posts 31 are fixed by corresponding connection with one third cross beam 32, a hollow square frame is formed; one rotor assembly support beam 33 is fixedly connected to the side face of two adjacent third upright posts out of the four third upright posts 31 toward the center point direction of the third bracket 3, and the other rotor assembly support beam 33 is fixedly connected to the side face of the other two adjacent third upright posts out of the four third upright posts 31 toward the center point direction of the third bracket 3; at this time, spaces for accommodating the rotor assemblies are formed between the four third posts 31 and the two rotor assembly support beams 33.
In the embodiment of the utility model, in order to avoid the situation that parts are inclined and slide down due to low height after being hung on the brackets, the four first supporting plates 13 are arranged at equal height, the two impeller supporting beams 14 are arranged at equal height, the four second supporting plates 23 are arranged at equal height, and the two rotor assembly supporting beams 33 are arranged at equal height, so that the cross beams, the supporting plates and the supporting beams with equal structures form a horizontal supporting platform parallel to the ground.
In the embodiment of the utility model, in order to limit the hoisting position of the impeller on the first bracket 1 and avoid displacement of the impeller after the impeller is positioned on the first bracket 1, the first bracket 1 further comprises four impeller limiting blocks 15 with the same structure; wherein, two impeller limiting blocks 15 are arranged on the side surface of one impeller supporting beam 14 facing the corresponding two first supporting sheets 13, and a first interval is reserved between the two supporting sheets; the other two impeller limiting blocks 15 are arranged on the side surface of the other impeller supporting beam 14 facing the corresponding two first supporting sheets 13, and a second interval equal to the first interval is reserved between the two impeller limiting blocks. Of course, in order to further enhance the frictional resistance, anti-slip treatments, such as adding anti-slip pads, providing anti-slip grooves, etc., are performed on the four first support pieces 13, the four second support pieces 23, and the four impeller stopper pieces 15.
In the embodiment of the utility model, in order to further hoist the impeller and accurately fall into the first bracket 1, the first bracket 1 further comprises four movable cross beams 16 with the same structure; wherein, each movable cross beam 16 is detachably arranged in the middle of two adjacent first upright posts 11 and positioned on the side surface far from the direction of the central point of the first bracket 1; each movable cross beam 16 is disposed at an equal height and is higher than the two impeller support beams 14.
In the embodiment of the utility model, the four first upright posts 11, the four second upright posts 21 and the four third upright posts 31 are all made of hollow square steel, and the heights of the four first upright posts, the four second upright posts and the four third upright posts are all 1.5m; the four first beams 12, the four second beams 22, the four third beams 32, the four movable beams 16, the two impeller support beams 14, and the two rotor assembly support beams 33 are all made of channel steel.
The application mode of the overhaul support combined structure of the nuclear power circulating water pump in the embodiment of the utility model comprises the following specific steps:
1. lifting the pump set from the pump pit to the first bracket 1, disassembling any one of the four movable cross beams 16 to form a pump set access side door, adjusting the driving position after the pump set enters the first bracket 1, enabling the impeller T to be positioned right above the four impeller limiting blocks 15, installing and fixing the disassembled movable cross beams 16 to form a pump set access side door to be closed, and continuing to descend the driving until the impeller T contacts with the two impeller supporting beams 14;
if the travelling crane descends again, the pump cover can be contacted with a pump cover supporting platform formed by the four first supporting pieces 13, so that the damage of the thrust auxiliary tile is avoided.
2. After the impeller has been removed from the first support 1 and allowed to reside, the remaining components including the pump cover and rotor assembly may be lifted to the second support 2, and the crane lowered until the pump cover contacts the pump cover support platform formed by the four second support tabs 23.
3. After the pump cover is detached from the second bracket 2 and is left to stand, the remaining pump rotor assembly is lifted up to the third bracket 3, the crane is lowered until the rotor assembly is in contact with the two rotor assembly support beams 33, and the rotor assembly disassembly work is performed.
4. And overhauling the impeller, the pump cover and the rotor assembly, and lifting the rotor assembly from the third bracket 3 to the second bracket 2 after overhauling is finished so as to install the pump cover.
5. After the pump cover and the rotor assembly are assembled, the assembled part of pump set is lifted from the second bracket 2 to the first bracket 1, and the impeller is installed.
6. After the impeller, the pump cover and the rotor assembly are assembled, any one of the four movable cross beams 16 is disassembled on the first bracket 1 to form a pump set access side door, and the whole pump set is lifted to a pump pit, so that all the works are completed.
The embodiment of the utility model has the following beneficial effects:
according to the utility model, through the first bracket for storing the impeller, the second bracket for storing the pump cover and the third bracket for storing the rotor component of the disassembly pump, parts such as the impeller, the pump cover and the like can be sequentially stored and disassembled, so that maintenance difficulty is reduced, a lifting appliance is not required to be frequently disassembled, high-altitude operation risks and lifting appliance disassembly risks are reduced, and the efficiency, safety and quality of the overall disassembly work of the circulating water pump are greatly improved.
The above disclosure is only a preferred embodiment of the present utility model, and it is needless to say that the scope of the utility model is not limited thereto, and therefore, the equivalent changes according to the claims of the present utility model still fall within the scope of the present utility model.
Claims (6)
1. The utility model provides a nuclear power circulating water pump's maintenance support integrated configuration which characterized in that includes:
the first bracket is used for storing impellers and comprises four first upright posts, four first cross beams, four first supporting sheets and two impeller supporting beams; the four first upright posts are erected on the ground and are arranged along four corners of a square with a first preset area, and the bottoms of two adjacent four first upright posts are respectively fixedly connected with a first cross beam through corresponding connection to form a hollow square frame; one end of each of the four first supporting sheets is fixed at the top of each of the four first upright posts, and the other end extends towards the axis of the central point of the first bracket for a certain length to form a supporting point for supporting the pump cover; one impeller supporting beam is fixedly connected to the middle parts of two adjacent first upright posts in the four first upright posts and positioned on the side face in the direction of the central point of the first bracket, and the other impeller supporting beam is fixedly connected to the middle parts of the other two adjacent first upright posts in the four first upright posts and positioned on the side face in the direction of the central point of the first bracket; the space for accommodating the impellers is formed between the four first upright posts and the two impeller supporting beams;
the second bracket is used for storing the pump cover and comprises four second upright posts, four second cross beams and four second supporting sheets; the four second upright posts are erected on the ground and are arranged along four corners of a square with a second preset area, and after the middle parts of two adjacent ones of the four second upright posts are respectively fixed through corresponding connection with a second cross beam, a hollow square frame is formed; one end of each of the four second supporting sheets is fixed at the top of each of the four second upright posts, and the other end extends towards the axis of the center point of the second bracket for a certain length to form a supporting point for supporting the pump cover; and
a third rack for storing rotor assemblies of the split pump, the third rack comprising four third posts, four third cross beams, and two rotor assembly support beams; the four third upright posts are erected on the ground and are arranged along four corners of a square with a third preset area, and the bottoms of two adjacent four third upright posts are respectively fixed by a third cross beam correspondingly connected with the bottoms of the two adjacent four third upright posts to form a hollow square frame; one rotor assembly supporting beam is fixedly connected to the side surface of two adjacent third upright posts in the direction of the central point of the third bracket, and the other rotor assembly supporting beam is fixedly connected to the side surface of the other two adjacent third upright posts in the direction of the central point of the third bracket; four third posts are formed with two rotor assembly support beams between them as spaces for accommodating the rotor assemblies.
2. The overhauling bracket combined structure of a nuclear power circulating water pump as claimed in claim 1, wherein the four first supporting plates are arranged at equal heights and have the same structure; the two impeller supporting beams are arranged at equal heights and have the same structure; the four second supporting sheets are arranged at equal heights and have the same structure; the two rotor assembly support beams are arranged at equal heights and have the same structure.
3. The overhauling bracket combined structure of a nuclear power circulating water pump as claimed in claim 2, wherein the first bracket further comprises four impeller limiting blocks with the same structure; wherein,,
the two impeller limiting blocks are arranged on the side surface of one impeller supporting beam facing the corresponding two first supporting sheets, and a first interval is reserved between the two impeller limiting blocks;
the other two impeller limiting blocks are arranged on the side faces of the other impeller supporting beam, which face the corresponding two first supporting sheets, and a second interval which is equal to the first interval is reserved between the two impeller limiting blocks.
4. The service bracket assembly structure of the nuclear power circulating water pump of claim 3, wherein the first bracket further comprises four movable cross beams with the same structure; wherein,,
each movable cross beam is detachably arranged in the middle of two adjacent first upright posts and positioned on the side surface far away from the central point of the first bracket;
each movable cross beam is arranged at equal height, and the height of each movable cross beam is higher than the heights of the two impeller supporting beams.
5. The service bracket assembly structure of the nuclear power circulating water pump of claim 4, wherein the four first upright posts, the four second upright posts and the four third upright posts are all made of hollow square steel.
6. The service bracket assembly structure of the nuclear power circulating water pump of claim 5, wherein the four first cross beams, the four second cross beams, the four third cross beams, the four movable cross beams, the two impeller supporting beams and the two rotor assembly supporting beams are all made of channel steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320118411.5U CN218984717U (en) | 2023-01-20 | 2023-01-20 | Maintenance support combined structure of nuclear power circulating water pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320118411.5U CN218984717U (en) | 2023-01-20 | 2023-01-20 | Maintenance support combined structure of nuclear power circulating water pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218984717U true CN218984717U (en) | 2023-05-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320118411.5U Active CN218984717U (en) | 2023-01-20 | 2023-01-20 | Maintenance support combined structure of nuclear power circulating water pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218984717U (en) |
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2023
- 2023-01-20 CN CN202320118411.5U patent/CN218984717U/en active Active
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