CN218380719U - Adjustable pipe nozzle centering tool - Google Patents
Adjustable pipe nozzle centering tool Download PDFInfo
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- CN218380719U CN218380719U CN202222217372.2U CN202222217372U CN218380719U CN 218380719 U CN218380719 U CN 218380719U CN 202222217372 U CN202222217372 U CN 202222217372U CN 218380719 U CN218380719 U CN 218380719U
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- adjustable
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- centering tool
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Abstract
This novel centering tool that belongs to, concretely relates to mouthpiece centering tool with adjustable. An adjustable nozzle centering tool, which comprises a central centering disc, wherein an adjustable supporting leg is connected below the central centering disc. This neotype effect that is showing is: the problems that the positioning process is complicated, the positioning deviation is large and the like in the traditional nozzle center positioning process are solved.
Description
Technical Field
This novel centering tool that belongs to, concretely relates to mouthpiece centering tool with adjustable.
Background
In the process of installing main equipment of a nuclear island of a nuclear power station or welding main loop pipelines, the central coordinate position of a nozzle at the bottom of the main equipment (such as a steam generator and a voltage stabilizer) is used as one of completion acceptance main control projects, continuous measurement or dynamic monitoring needs to be carried out at different construction stages, and the final position of the equipment is ensured to meet the requirement of a design file by combining with a measurement result for adaptability adjustment. The center of the nozzle at the bottom of the device is a virtual point, so that positioning measurement cannot be directly carried out, usually, the center is found first, then, the center is extended to the pipe wall, identification is carried out, and finally, data positioning is carried out by adopting a mode of sectional measurement and summary calculation. Because the whole main equipment installation process has multiple measurements, and the point to be measured is a virtual point, the point to be measured can not be ensured to be positioned at the same point in each measurement; meanwhile, if the operation flow of 'centering, extending line, sectional quantity and summary calculation' is repeatedly executed during each measurement, the operation procedure is complicated, the operation efficiency is low, and the measurement summary result has large deviation, so that the mode of 'sectional measurement and summary calculation' has the defects that: the sectional measurement efficiency is low, the deviation of the point taking position easily causes the completion position of equipment to exceed the design standard, and the requirements of field construction process control and engineering progress cannot be met.
SUMMERY OF THE UTILITY MODEL
This novel defect to prior art, a mouthpiece centering instrument with adjustable is provided, this instrument is with this virtual position materialization in equipment bottom mouthpiece center, and ensure that the device remains stable for a long time under the condition that does not harm the mouthpiece inner wall, for the location at equipment mouthpiece center and measure provide an entity reference point, the measurement of having simplified the equipment installation in-process is got some operation flows, the operation degree of difficulty of getting is reduced, on-the-spot measurement accuracy and measuring speed have been promoted, on-the-spot engineering progress and quality are guaranteed.
This is novel to realize like this: an adjustable nozzle centering tool, which comprises a central centering disc, wherein an adjustable supporting leg is connected below the central centering disc.
An adjustable nozzle centering tool as described above, wherein the central centering disk and the adjustable leg are connected by a threaded bushing.
The adjustable nozzle centering tool comprises an adjustable support leg, wherein the adjustable support leg comprises an adjusting sleeve, the adjusting sleeve is connected with a threaded sleeve, an adjusting bolt is arranged in the center of the adjusting sleeve, and a supporting piece is arranged at the top end of the adjusting bolt.
The adjustable nozzle centering tool is characterized in that the adjusting sleeve is sleeved with a locking nut.
The adjustable nozzle centering tool is characterized in that the center centering disc is machined and formed by a stainless steel plate, and conical center positioning holes are accurately machined on two planes of the centering disc respectively and serve as entity positioning points for measurement.
An adjustable nozzle centering tool as described above, wherein the threaded sleeves are radially distributed at 120 ° intervals on the circumference of the central centering disk and are connected to the central centering disk by welding.
The adjustable nozzle centering tool is characterized in that the threaded sleeve is formed by machining a stainless steel pipe or a stainless steel rod.
The adjustable pipe nozzle centering tool is characterized in that the adjusting sleeve is formed by processing a stainless steel bar and has a double-thread structure, the external thread of the adjusting sleeve is matched with the threaded sleeve, and the adjusting sleeve is mainly used for adjusting the length of the supporting leg structure and ensuring that the whole set of device is matched with the specification of the pipe nozzle; the internal thread is matched with the adjusting bolt and is mainly used for micro adjustment of the length of the supporting leg structure, so that the whole device is reliably fixed inside the nozzle.
According to the adjustable nozzle centering tool, the locking nut is machined and formed by the stainless steel plate, the internal thread matched with the adjusting bolt is prepared, and the locking nut is used for locking the adjustable part of the adjustable supporting leg, so that the whole set of device is guaranteed to be firm and stable.
According to the centering tool for the adjustable nozzle, the supporting piece is formed by processing the hard plastic rod without halogen elements, the column shape size is precisely matched with the counter bore of the head of the adjusting bolt, the top of the supporting piece is processed according to the spherical structure, the spherical curve is close to the cambered surface of the inner wall of the nozzle, and the centering tool is mainly used as a supporting part of the adjustable supporting leg and the nozzle.
This neotype effect that is showing is: the problems that the positioning process is complicated, the positioning deviation is large and the like in the traditional nozzle center positioning process are solved.
The concrete body is as follows:
(1) The adjustable supporting leg type supporting structure is designed, under the auxiliary cooperation of measurement professionalism, the center of the nozzle can be quickly positioned and fed back to the entity point position of the central centering disc (1) of the device by respectively adjusting the lengths of the three groups of adjustable supporting legs (3), and the quick positioning of the center of the nozzle is realized;
(2) The three groups of telescopic supporting parts are matched with the locking nut for use, so that the supporting leg structure can be tightly attached to the inner wall of the nozzle, the integral stability of the device after installation is ensured, and the whole installation process of the device can be met only by once positioning and point finding under normal conditions;
(3) Through the replacement of the three groups of threaded sleeves (2) and the telescopic adjustment of the adjustable supporting legs (3), the device can be ensured to be suitable for pipelines or nozzles of different models, and has a wider application range;
(4) The supporting piece (7) which is directly contacted with the inner wall of the pipeline is made of hard plastic bars without halogen elements, the material has higher rigidity and toughness and good mechanical strength, and the selected material can not cause damage and pollution to the inner wall of the nozzle while solving the problem of the strength of the supporting structure of the device, thereby having good applicability.
Drawings
FIG. 1 is a general structure diagram of the device
FIG. 2 is a view of an adjustable leg
In the figure: (1) -central centering disc (2) -threaded bushing (3) -adjustable leg (4) -adjustment bushing (5) -locking nut (6) -adjustment bolt (7) -support piece
Detailed Description
An adjustable nozzle centering tool is shown in figure 1, and comprises a center centering disc (1), a threaded sleeve (2) and adjustable supporting legs (3).
The center centering disc (1) is a main body component of the device, is machined and molded by stainless steel plates (the sizes of the center centering disc can be made into different sizes according to pipe diameters of different specifications), and is used for accurately machining conical center positioning holes on two planes of the centering disc respectively to serve as entity positioning points for measurement.
The threaded sleeves (2) are radially distributed on the circumference of the central centering disc (1) at intervals of 120 degrees and are connected with the central centering disc (1) in a welding mode, the threaded sleeves are main connecting pieces of a supporting structure of the device, and the structural form of three-leg support can ensure that the whole device is firmly fixed in the nozzle. The threaded sleeve (2) is formed by machining a stainless steel pipe or a stainless steel rod, is a replaceable part, and can be machined into different lengths according to different specifications and pipe diameters so as to adapt to different pipe diameter occasions. An internal thread is processed on one side of the interior of the threaded sleeve (2) close to the adjustable supporting leg (3), and the length of the internal thread is matched with the screwing length of the adjustable supporting leg (3).
The adjustable supporting legs (3) are adjusting parts of a supporting structure of the device, and mainly have the advantages that the length of the supporting legs is adjusted, so that a center hole of the center centering disc (1) is accurately positioned at the theoretical center position of the nozzle, and the whole device is reliably fixed in the nozzle. The adjustable supporting leg (3) is composed as shown in figure 2, and mainly comprises: adjusting sleeve (4), lock nut (5), adjusting bolt (6), support piece (7).
The adjusting sleeve (4) is formed by processing a stainless steel bar, has a double-thread structure, is matched with the thread sleeve (2) through external threads, is mainly used for adjusting the length of a supporting leg structure and ensures that the whole set of device is matched with the specification of the pipe nozzle; internal thread and adjusting bolt (6) are supporting, and the little of mainly used landing leg structure length is whole, ensures that the complete equipment reliably fixes inside the mouthpiece. The locking nut (5) is formed by processing a stainless steel plate, is provided with an internal thread matched with the adjusting bolt (6) and is used for locking the adjustable part of the adjustable supporting leg, and the whole set of device is ensured to be firm and stable. The supporting piece (7) is formed by processing a hard plastic bar without halogen elements, the column shape size is precisely matched with a counter bore at the head of the adjusting bolt (6), the top is processed according to a spherical structure, a spherical curve is close to the cambered surface of the inner wall of the nozzle, and the supporting piece is mainly used as a supporting part of the adjustable supporting leg and the nozzle.
A specific example is given below.
In the installation stage of equipment and the welding process of a main pipeline, the position of the central point of the end face of an inlet connecting pipe on the primary side of a steam generator needs to be dynamically monitored. As the two inlet connecting pipes on the primary side of the steam generator have different overall dimensions, a set of adjustable nozzle centering tool with the application range of phi 690-phi 800mm is designed after comprehensive consideration.
After the adjustable nozzle centering tool is processed in a component form, three groups of threaded sleeves (2) are sequentially assembled on a central centering disc (1) at intervals of 120 degrees respectively, and are combined into a whole in a welding mode. When the tool is used, the rest parts are assembled into a whole on site and then are installed and positioned, and the specific operation is as follows:
(1) The adjusting sleeve (4) is screwed into the threaded sleeve (2) and the screwing length is ensured to meet the use requirement.
(2) And (3) installing the support piece (7) into a matching counter bore at the head of the adjusting bolt (6) for compaction, and ensuring that the support piece (7) is firmly installed.
(3) And the locking nut (5) is screwed into the adjusting bolt (6) and then adjusted to a proper position, the adjusting bolt (6) is screwed into the adjusting sleeve (4), and the screwing length is ensured to meet the use requirement.
(4) And (4) finishing the installation of the other two groups of adjustable supporting legs by referring to the steps (1) to (3), and adjusting the adjustable supporting legs to a uniform height.
(5) The adjustable nozzle centering tool is installed inside the nozzle, the length of the supporting legs is adjusted locally through measurement and matching, and the central positioning point on the central centering disc (1) is adjusted to the central position of the nozzle.
(6) And adjusting the rest supporting legs to ensure that the top supporting piece (7) is reliably supported on the inner wall of the nozzle, and screwing the locking nut (5) to ensure that the adjustable nozzle centering tool is firmly fixed in the nozzle.
(7) And taking a central positioning point on the central centering disc (1) as a reference to measure and monitor related data.
Claims (10)
1. An adjustable nozzle centering tool, characterized in that: comprises a central centering disc (1), and an adjustable supporting leg (3) is connected below the central centering disc (1).
2. An adjustable nozzle centering tool as claimed in claim 1, wherein: the central centering disc (1) is connected with the adjustable supporting leg (3) through a threaded sleeve (2).
3. An adjustable nozzle centering tool as claimed in claim 2, wherein: the adjustable supporting leg (3) comprises an adjusting sleeve (4), the adjusting sleeve (4) is connected with the threaded sleeve (2), an adjusting bolt (6) is arranged at the center of the adjusting sleeve (4), and a supporting piece (7) is arranged at the top end of the adjusting bolt (6).
4. An adjustable nozzle centering tool as claimed in claim 3, wherein: the adjusting sleeve (4) is also sleeved with a locking nut (5).
5. An adjustable nozzle centering tool as claimed in claim 4, wherein: the center centering disc (1) is formed by machining a stainless steel plate, and conical center positioning holes are accurately machined on two planes of the centering disc respectively and serve as entity positioning points for measurement.
6. An adjustable nozzle centering tool as claimed in claim 5, wherein: the threaded sleeves (2) are radially distributed on the circumference of the central centering disk (1) at intervals of 120 degrees and are connected with the central centering disk (1) in a welding mode.
7. An adjustable nozzle centering tool as claimed in claim 6, wherein: the threaded sleeve (2) is formed by processing a stainless steel pipe or a stainless steel rod.
8. An adjustable nozzle centering tool as claimed in claim 7, wherein: the adjusting sleeve (4) is formed by processing a stainless steel bar and has a double-thread structure, the external thread of the adjusting sleeve is matched with the thread sleeve (2), and the adjusting sleeve is mainly used for adjusting the length of a supporting leg structure and ensuring that the whole set of device is matched with the specification of the pipe nozzle; the internal thread is matched with the adjusting bolt (6) and is mainly used for micro adjustment of the length of the supporting leg structure, so that the whole device is reliably fixed in the nozzle.
9. An adjustable nozzle centering tool as claimed in claim 8, wherein: the locking nut (5) is formed by processing a stainless steel plate, is provided with an internal thread matched with the adjusting bolt (6) and is used for locking the adjustable part of the adjustable supporting leg, and the whole set of device is ensured to be firm and stable.
10. An adjustable nozzle centering tool as claimed in claim 9, wherein: the supporting piece (7) is formed by processing a hard plastic bar without halogen elements, the column shape size is precisely matched with a counter bore at the head of the adjusting bolt (6), the top is processed according to a spherical structure, a spherical curve is close to the cambered surface of the inner wall of the nozzle, and the supporting piece is mainly used as a supporting part of the adjustable supporting leg and the nozzle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222217372.2U CN218380719U (en) | 2022-08-23 | 2022-08-23 | Adjustable pipe nozzle centering tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222217372.2U CN218380719U (en) | 2022-08-23 | 2022-08-23 | Adjustable pipe nozzle centering tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218380719U true CN218380719U (en) | 2023-01-24 |
Family
ID=84969898
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222217372.2U Active CN218380719U (en) | 2022-08-23 | 2022-08-23 | Adjustable pipe nozzle centering tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218380719U (en) |
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2022
- 2022-08-23 CN CN202222217372.2U patent/CN218380719U/en active Active
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