CN222974643U - A tool for aligning electrical penetrations and embedded bushings in nuclear power plants - Google Patents
A tool for aligning electrical penetrations and embedded bushings in nuclear power plants Download PDFInfo
- Publication number
- CN222974643U CN222974643U CN202422081274.XU CN202422081274U CN222974643U CN 222974643 U CN222974643 U CN 222974643U CN 202422081274 U CN202422081274 U CN 202422081274U CN 222974643 U CN222974643 U CN 222974643U
- Authority
- CN
- China
- Prior art keywords
- support ring
- tool
- centering
- nuclear power
- embedded sleeve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Landscapes
- Installation Of Indoor Wiring (AREA)
Abstract
本新型属于对中工具，具体涉及一种用于核电站电气贯穿件与预埋套管对中的工具。一种用于核电站电气贯穿件与预埋套管对中的工具，其中，包括同心且等直径设置的环状零件安装支撑环和调节支撑环，安装支撑环和调节支撑环之间固定连接，在安装支撑环上设置安装螺栓，在调节支撑环上设置调节螺栓。本新型的显著效果是：该装置的制作材料基本为废旧工程物料，制作费用低，装置可重复利用。使用电气贯穿件吊装专用工具可以大幅度提高电气贯穿件与预埋套管的对中效率，且无需专门搭设支撑平台。使用电气贯穿件吊装专用工具吊装一个电气贯穿件可节省人工工日4.4个，转化为费用约720元。
The present invention belongs to a centering tool, and specifically relates to a tool for centering electrical penetrations and embedded bushings in nuclear power plants. A tool for centering electrical penetrations and embedded bushings in nuclear power plants, which includes an annular part installation support ring and an adjustment support ring that are concentric and arranged with equal diameters, the installation support ring and the adjustment support ring are fixedly connected, installation bolts are arranged on the installation support ring, and adjustment bolts are arranged on the adjustment support ring. The significant effect of the present invention is that the manufacturing material of the device is basically waste engineering materials, the manufacturing cost is low, and the device can be reused. The use of special tools for hoisting electrical penetrations can greatly improve the centering efficiency of electrical penetrations and embedded bushings, and there is no need to specially set up a support platform. The use of special tools for hoisting electrical penetrations to hoist an electrical penetration can save 4.4 man-days of labor, which is converted into a cost of about 720 yuan.
Description
Technical Field
The utility model belongs to centering instrument, concretely relates to instrument that is used for electric penetration assembly of nuclear power station and pre-buried sleeve pipe to center.
Background
The electric penetrating piece is a special electric device which is arranged on a containment vessel of a nuclear power station reactor factory building and provides electric connection for various conductors penetrating through the containment vessel wall, and meanwhile, the electric penetrating piece is used as a part of the containment vessel to form a third barrier for preventing radioactive substances from leaking, so that the integrity of the containment vessel is ensured.
The VVER-1000 stack type common low-voltage electric penetrating member 148 tables weigh 0.4 ton, the outer diameter of the welding flange is 325mm, the outer diameter of the cylinder is 273mm, and the outer diameter of the embedded sleeve of the low-voltage penetrating member is 325mm and the inner diameter is 300mm. The height of the VVER-1000 pile type reactor factory building layer is 8 meters, double-layer containment vessels are arranged, the embedded sleeves of the electric penetrating members are distributed on different elevations of the inner-layer containment vessel of the reactor factory building, and the distance between the welding groove of the embedded sleeve of the electric penetrating member and the containment vessel is 150mm. In the installation process of the electric penetrating piece, the electric penetrating piece cylinder body needs to pass through the corresponding electric penetrating piece embedded sleeve from the reactor factory building, so that the welding flange groove of the electric penetrating piece is aligned with the welding groove of the electric penetrating piece embedded sleeve on the circumference, and a gap of 2mm (abbreviated as centering) is ensured so as to meet the welding requirement of the welding flange of the electric penetrating piece and the electric penetrating piece embedded sleeve.
Because the outer diameter of the cylinder of the electric penetrating member is different from the inner diameter of the embedded sleeve by 27mm, after the cylinder of the electric penetrating member penetrates through the embedded sleeve, the welding flange of the electric penetrating member is not aligned with the welding flange of the embedded sleeve, and the welding requirement cannot be met. If the electrical penetration piece is supported by setting up the supporting platform, the following problems mainly exist:
1) Professional scaffold erection personnel are required for platform erection, so that the workload and coordination difficulty of electric penetration piece installation are increased;
2) The space of the reactor factory is narrow, the arrangement of objects such as pipelines, brackets, equipment and bridges is compact, the erection difficulty of a supporting platform is high, and the erected platform is difficult to adjust in accordance with the centering requirement of an electric penetration piece;
3) The number of the electric penetrating members is large, the weight of the electric penetrating members is heavy, and each penetrating member is installed by erecting a supporting platform for adjustment and centering, so that the installation efficiency is reduced, and the safety risk is increased.
Disclosure of utility model
The utility model provides a defect to prior art provides a instrument that is used for nuclear power station electric penetration assembly and pre-buried sleeve pipe to centering.
The tool for centering the electric penetration piece and the embedded sleeve of the nuclear power station is realized by the aid of the tool, and comprises an annular part installation supporting ring and an adjusting supporting ring which are concentric and are arranged in equal diameter, wherein the installation supporting ring is fixedly connected with the adjusting supporting ring, the installation supporting ring is provided with an installation bolt, and the adjusting supporting ring is provided with an adjusting bolt.
The tool for centering the electric penetration piece and the embedded sleeve of the nuclear power station is characterized in that the installation support ring and the adjustment support ring are fixedly connected through the connecting plate.
The tool for centering the electric penetration piece and the embedded sleeve of the nuclear power station is characterized in that 4 mounting bolts are arranged and uniformly arranged along the circumferential direction of the mounting support ring.
The tool for centering the electric penetration piece and the embedded sleeve of the nuclear power station is characterized in that 4 adjusting bolts are arranged and uniformly arranged along the circumferential direction of the adjusting support ring.
The tool for centering the electric penetration piece and the embedded sleeve of the nuclear power station is characterized in that 3 connecting plates are arranged, and the connecting plates are uniformly arranged between the installation support ring and the adjustment support ring.
The tool for centering the electric penetration piece and the embedded sleeve of the nuclear power station is characterized in that the outer diameter of the mounting support ring is 340mm, the width is 50mm and the thickness is 6mm, and the outer diameter of the adjusting support ring is 340mm, the width is 50mm and the thickness is 6mm.
The tool for centering the electric penetration piece and the embedded sleeve of the nuclear power station is characterized in that the length of the connecting plate is 50mm, the width of the connecting plate is 40mm, and the thickness of the connecting plate is 6mm.
The novel device has the remarkable effects that the manufacturing material of the device is basically waste engineering materials, the manufacturing cost is low, and the device can be reused. The centering efficiency of the electric penetrating piece and the embedded sleeve can be greatly improved by using the special tool for hoisting the electric penetrating piece, and a supporting platform is not required to be specially erected. The special tool for hoisting the electric penetrating piece is used for hoisting one electric penetrating piece, 4.4 artificial days can be saved, and the cost is about 720 yuan.
Drawings
FIG. 1 is a perspective view of an electrical penetration assembly and a pre-buried sleeve centering tool;
FIG. 2 is a left side view of the tool with the electrical penetration assembly centered with the pre-buried sleeve;
FIG. 3 is a top view of the electrical penetration assembly and the pre-buried sleeve centering tool;
FIG. 4 is a schematic illustration of the use of the electrical penetration assembly with the pre-buried sleeve centering tool.
In the figure, the installation support ring is 1, the installation bolts are 2, the adjustment support ring is 3, the connecting plate is 4, the adjustment bolts are 5, the electric penetrating piece welding flange is 6, the electric penetrating piece end plate is 7, the reactor plant safety shell is 8, and the electric penetrating piece is according to the embedded sleeve.
Detailed Description
A tool for centering an electric penetration piece and an embedded sleeve of a nuclear power station comprises the following components and functions:
The electric penetrating piece and embedded sleeve centering tool consists of 1 mounting support ring with the outer diameter of 340mm, the width of 50mm and the thickness of 6mm, 1 adjusting support ring with the outer diameter of 340mm, the width of 50mm and the thickness of 6mm, 3 connecting plates with the length of 50mm, the width of 40mm and the thickness of 6mm, 8 threaded sleeves with the outer diameter of 20mm, the inner diameter of 16mm and the length of 10mm, 4 mounting bolts with the total tooth hexagon M16.times.60 and 4 adjusting bolts with the total tooth hexagon M16.times.90.
The installation support ring is used for supporting the centering tool to be installed on the embedded sleeve of the penetrating piece, the installation support ring drills 4 are respectively and directly 18mm holes, and the angle between the 4 round holes on the installation support ring is 90 degrees.
The adjusting support ring is used for adjusting the support of the welding flange position of the penetrating piece, the adjusting support ring drills 4 are respectively 18mm holes, and the angle between the round holes 4 on the mounting support ring is 90 degrees.
The installation support ring and the regulation support ring of instrument are connected to three connecting plates, form a whole, will adjust the atress transmission of support ring to the installation support ring on, and form three welded window between installation support ring and regulation support ring, when electric penetration piece and pre-buried sleeve pipe are to fixed the back through centering instrument centering, the welding personnel will penetrate piece welding flange and pre-buried sleeve pipe spot welding through three welded window and fix.
Eight threaded sleeves are welded on the round holes of the installation support ring and the adjustment support ring respectively, the angles between the threaded sleeves are 90 degrees on the installation support ring and the adjustment support ring, and four installation bolts fix the installation support ring on the embedded sleeve of the penetrating piece through the threaded sleeves. The four adjusting bolts are used for adjusting the positions of the welding flanges of the electric penetrating piece through threaded sleeves arranged on the adjusting supporting plate.
The three-dimensional structure diagram of the centering tool for the electric penetrating piece and the embedded sleeve is shown in fig. 1.
The left side view of the tool for centering the electric penetrating piece and the embedded sleeve is shown in fig. 2.
The top view of the centering tool for the electric penetrating piece and the embedded sleeve is shown in fig. 3.
The using method is approximately as follows:
In a reactor factory, installing an electric penetrating piece and embedded sleeve centering tool on a penetrating piece embedded sleeve 150mm longer than a containment vessel, sleeving an installation support ring of the tool on the embedded sleeve, and adjusting four hexagon bolts M16 x 60 on the installation support ring by using an adjustable wrench to enable the installation support ring to hug the outer circle of the embedded sleeve.
And secondly, penetrating the electric penetrating piece cylinder body into the embedded sleeve from the reactor containment, and adjusting the depth dimension of the cylinder body entering the sleeve in a hand-pushing mode. The depth dimension is required to be adjusted to a clearance of 2mm between the blunt edge of the welding flange of the penetrating piece and the blunt edge of the welding groove of the embedded sleeve on the circumference.
Adjusting four hexagon bolts with M16 x 90 on an adjusting support ring by using an adjustable wrench to enable the adjusting support ring to tightly hold an end plate of the cylinder of the electric penetrating piece, supporting the electric penetrating piece and adjusting the circumferential position, wherein the circumferential position is adjusted to enable the blunt edge of the welding flange of the penetrating piece to be aligned with the blunt edge of the welding groove of the embedded sleeve on the circumference;
and fourthly, welding personnel spot-weld and fix the welding flange of the penetrating piece and the embedded sleeve through three welding windows, and after electric penetrating piece is fixed by electric welding, respectively adjusting the hexagon bolts according to the support ring and four M16 x 60 on the support ring by using adjustable wrenches, and dismantling the centering tool.
The use schematic diagram of the electric penetration piece and the embedded sleeve centering tool is shown in fig. 4.
Tool making
According to the stress of the tool, a carbon steel pipe with the outer diameter of 340mm and the wall thickness of 6mm, a carbon steel plate with the thickness of 6mm, an internal thread sleeve with the outer diameter of 20mm and the inner diameter of 16mm are selected, cut and fed according to the drawing size, and then are assembled through welding.
The application has the following effects:
The manufacturing material of the device is basically waste engineering materials, the manufacturing cost is low, the device can be recycled, and the manufacturing cost is as follows:
The centering efficiency of the electric penetrating piece and the embedded sleeve can be greatly improved by using the special tool for hoisting the electric penetrating piece, and a supporting platform is not required to be specially erected. After improvement, the lifting of the electric penetrating piece can reduce working hours and convert the working hours into economic efficiency as follows:
Compared with the prior art, the electric penetrating piece hoisting tool has the advantages that 4.4 artificial days can be saved by hoisting one electric penetrating piece by using the electric penetrating piece hoisting tool, and the electric penetrating piece hoisting tool is converted into about 720 yuan.
The VVER stack has 148 total low-voltage electrical penetrations, yielding a direct economic benefit of about:
148 x 720-300= 106260 yuan.
In addition, the special tool for centering the electric penetrating piece and the embedded sleeve is used, a supporting platform is not required to be specially erected, the shutdown waiting caused by the restriction of the platform erection progress of an installation team is avoided, the back and forth movement in the centering process of the electric penetrating piece is reduced, the risk of damage to the paint of the cylinder body of the electric penetrating piece in the centering process of the electric penetrating piece is reduced, the cost is saved, and the construction safety risk is reduced. The tool is convenient to use and high in centering efficiency.
The tool can be popularized and used when the electric penetration piece of the nuclear power station of Hualong I and AP1000 and the like is aligned with the embedded sleeve.
Claims (7)
1. A tool for centering an electric penetration piece and an embedded sleeve of a nuclear power station is characterized by comprising an annular part installation support ring (1) and an adjustment support ring (2) which are concentric and are arranged in equal diameter, wherein the installation support ring (1) is fixedly connected with the adjustment support ring (2), the installation support ring (1) is provided with an installation bolt (2), and the adjustment support ring (2) is provided with an adjustment bolt (5).
2. A tool for centering an electrical penetration piece and an embedded sleeve of a nuclear power station as claimed in claim 1, wherein the installation support ring (1) and the adjustment support ring (2) are fixedly connected through a connecting plate (4).
3. A tool for centering an electrical penetration piece and an embedded sleeve of a nuclear power plant as claimed in claim 2, wherein 4 mounting bolts (2) are arranged uniformly along the circumferential direction of the mounting support ring (1).
4. A tool for centering an electrical penetration and a pre-buried sleeve of a nuclear power plant as claimed in claim 3, characterized in that 4 adjusting bolts (5) are provided, uniformly arranged along the circumference of the adjusting support ring (2).
5. A tool for centering an electrical penetration and an embedded sleeve of a nuclear power plant as claimed in claim 4, wherein 3 connecting plates (4) are uniformly arranged between the installation support ring (1) and the adjustment support ring (2).
6. A tool for centering an electrical penetration piece and an embedded sleeve of a nuclear power station as claimed in claim 5, wherein the outer diameter of the mounting support ring (1) is 340mm, the width is 50mm and the thickness is 6mm, and the outer diameter of the adjusting support ring (2) is 340mm, the width is 50mm and the thickness is 6mm.
7. A tool for centering an electrical penetration of a nuclear power plant with an embedded sleeve as claimed in claim 6, characterized in that the web (4) is 50mm long, 40mm wide and 6mm thick.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202422081274.XU CN222974643U (en) | 2024-08-27 | 2024-08-27 | A tool for aligning electrical penetrations and embedded bushings in nuclear power plants |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202422081274.XU CN222974643U (en) | 2024-08-27 | 2024-08-27 | A tool for aligning electrical penetrations and embedded bushings in nuclear power plants |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222974643U true CN222974643U (en) | 2025-06-13 |
Family
ID=95976369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202422081274.XU Active CN222974643U (en) | 2024-08-27 | 2024-08-27 | A tool for aligning electrical penetrations and embedded bushings in nuclear power plants |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN222974643U (en) |
-
2024
- 2024-08-27 CN CN202422081274.XU patent/CN222974643U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112012340B (en) | Suspension connection node for large-span cantilever steel truss and construction method thereof | |
| CN116537566A (en) | Steel column docking device | |
| CN106801429B (en) | An installation method for wind turbine outer platform for single pile foundation | |
| CN211638859U (en) | Pipe orifice alignment auxiliary device for adjacent pipelines | |
| CN110863956B (en) | New type super high tower structure, installation structure and installation method of large wind turbine | |
| CN204997620U (en) | Shaft coupling mounting tool | |
| CN218225281U (en) | Adjustable positioning tool | |
| CN116517308A (en) | Clamp for high-altitude butt joint of steel tube column and high-altitude butt joint method of steel tube column | |
| CN206606552U (en) | It is a kind of to prevent the frock of flange distortion | |
| CN214836870U (en) | Wind power hybrid tower prefabricated tower barrel connected by high-efficiency dry-type angle steel | |
| CN212405168U (en) | Steel bracing joint design | |
| CN115359937A (en) | Containment shell construction method and containment construction method | |
| CN115781615A (en) | Assembly type resonance beam of large-diameter steel cylinder vibration hammer set and assembly method thereof | |
| CN224102216U (en) | A positioning device for welding circular steel columns for tower crowns | |
| CN221443533U (en) | Standard knot structure of water supply and drainage top pipe well steel structure | |
| CN222344597U (en) | Multifunctional combined clamp for steel chimney wall | |
| CN215977355U (en) | Installation device and structure of seagoing booster station joint meter | |
| CN213952212U (en) | Radial butt-joint structure of assembled steel pipe pile | |
| CN221095414U (en) | Non-welding steel beam combined support | |
| CN216690414U (en) | Rotary installation device for steel structure node connecting plate | |
| CN222668725U (en) | A main shaft connection structure of a water turbine and a generator | |
| CN218713983U (en) | Novel all-bolt square column connecting piece and connecting structure | |
| CN224119606U (en) | A working platform for testing high-cantilever, large-spacing foundation piles | |
| CN218861773U (en) | Assembled elevator shaft small-specification rectangular tube upright post butt joint structure node member | |
| CN223953471U (en) | A pipe seat to prevent pipe rotation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |