CN212870306U - Nuclear power station refrigerator end cover - Google Patents
Nuclear power station refrigerator end cover Download PDFInfo
- Publication number
- CN212870306U CN212870306U CN202020679855.2U CN202020679855U CN212870306U CN 212870306 U CN212870306 U CN 212870306U CN 202020679855 U CN202020679855 U CN 202020679855U CN 212870306 U CN212870306 U CN 212870306U
- Authority
- CN
- China
- Prior art keywords
- end cover
- shell
- flange
- nuclear power
- refrigerator
- 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
Images
Landscapes
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The utility model discloses a nuclear power station refrigerator end cover, which comprises an end cover shell, wherein a shell side rib plate, an inner side flange and an outer side flange which are integrally formed with the end cover shell are arranged on the end cover shell; the end cover shell is protruded towards one side, and the shell side rib plate is formed in the end cover shell and divides the end cover shell into a first cavity and a second cavity; the inner side flange is formed on the outer periphery of the end cover shell and is used for being connected with the end part of the refrigerator; the outer flange is formed on the convex side of the end cover shell, and a feeding port communicated with the first cavity is formed in the outer flange; wherein the cross section of the shell side rib plate is wavy or zigzag. The utility model discloses structural integrity is good, and the reliability is high, and heat transfer performance is good.
Description
Technical Field
The utility model relates to a nuclear power station refrigerator end cover technical field especially relates to a nuclear power station refrigerator end cover.
Background
The end cover of the nuclear power station refrigerating machine is positioned on the inlet side of the evaporator of the refrigerating machine of the nuclear power station compressed air production system, when the nuclear power station refrigerating machine works, high-temperature media generated by the nuclear power station compressed air production system enter the refrigerating machine through the feeding hole of the end cover to be cooled, and cold and hot media before and after heat exchange are sealed at the end part of the refrigerating machine through the end cover and are isolated by the side rib plate of the end.
The end cover structure of the refrigerating machine of the nuclear power station compressed air production system is complex, the end cover is generally produced abroad at present, and the part is generally processed by the procedures of gray cast iron casting, welding and the like.
However, refrigerator end covers produced by a gray cast iron casting method are purchased from foreign countries, and different refrigerator end covers need to be developed with molds separately, so that the manufacturing period is long, and casting air holes are easily generated in the casting process; because the end cover shell of the end cover of the refrigerator is connected with the flange and other parts in a welding mode, the obtained end cover of the refrigerator has a large number of welding seams, the structural integrity of the end cover is poor, and quality defects such as non-fused welding seams and the like are easily generated; in addition, the heat exchange performance of existing cast end caps for refrigerator evaporators is to be improved.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a nuclear power station refrigerator end cover is provided, its structural integrity is good, and the reliability is high, and heat transfer performance is good.
In order to solve the technical problem, the utility model provides a nuclear power station refrigerator end cover, which comprises an end cover shell, wherein a shell side rib plate, an inner side flange and an outer side flange which are integrally formed are arranged on the end cover shell;
the end cover shell is protruded towards one side, and the shell side rib plate is formed in the end cover shell and divides the end cover shell into a first cavity and a second cavity;
the inner side flange is formed on the outer periphery of the end cover shell and is used for being connected with the end part of the refrigerator; the outer flange is formed on the convex side of the end cover shell, and a feeding port communicated with the first cavity is formed in the outer flange;
wherein the cross section of the shell side rib plate is wavy or zigzag.
As an improvement of the scheme, the first chamber or the second chamber is used for accommodating the heat exchange tube, and the surface of the shell side rib plate is an arc surface tangent to the heat exchange tube.
As an improvement of the above, the thickness of the shell-side rib is gradually increased from the end portion to the root portion.
As an improvement of the scheme, the end cover of the nuclear power station refrigerator is integrally formed through an electric melting additive manufacturing process.
As an improvement of the scheme, the inner flange is provided with a first parameter testing hole and a second parameter testing hole, the first parameter testing hole is communicated with the first cavity, and the second parameter testing hole is communicated with the second cavity.
As an improvement of the scheme, the outer flange is provided with a water pressure test hole communicated with the first chamber.
As an improvement of the scheme, the outer wall of the inner side flange is provided with a positioning notch.
As an improvement of the scheme, the outer flange is provided with first mounting holes along the circumferential array, and the inner flange is provided with second mounting holes along the circumferential array.
Implement the utility model discloses, following beneficial effect has:
the utility model provides a nuclear power station refrigerator end cover, which has no welding seam by integrally forming a shell side rib plate, an inner side flange and an outer side flange on an end cover shell, and has good structural integrity and high reliability; in addition, the shell side rib plate divides the end cover shell into a first cavity and a second cavity, wherein a feeding port communicated with the first cavity is formed in the flange on the outer side, the end cover on the inner side is fixedly connected with the end part of the refrigerator, when a high-temperature medium enters the first cavity through the feeding hole and then enters the refrigerator for cooling, the contact surfaces of the high-temperature medium in the first cavity and the low-temperature medium in the second cavity are two surfaces of the shell side rib plate, the surface area of the shell side rib plate is larger than that of the plane contact surface of the existing cast end cover, and the heat exchange effect is better.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of a refrigerator end cover of a nuclear power plant according to the present invention;
fig. 2 is a sectional view a-a of fig. 1.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1 and fig. 2, the present invention provides an embodiment of an end cover of a refrigerator in a nuclear power station, including an end cover housing 1, wherein a shell side rib plate 2, an inner side flange 3 and an outer side flange 4 are integrally formed on the end cover housing 1; the end cover shell 1 protrudes towards one side, the shell side rib plate 2 is formed in the end cover shell 1 and divides the end cover shell 1 into a first cavity 11 and a second cavity 12; the inner side flange 3 is formed on the outer periphery of the end cover shell 1 and is used for being connected with the end part of the refrigerator; the outer flange 4 is formed on the convex side of the end cover shell 1, and a feeding port 41 communicated with the first chamber 11 is formed in the outer flange 4; wherein the cross section of the shell side rib plate 2 is wave-shaped or zigzag-shaped.
In the embodiment, the shell side rib plate 2, the inner side flange 3 and the outer side flange 4 are integrally formed on the end cover shell 1, no welding seam exists, the structural integrity is good, and the reliability is high; in addition, the shell side rib plate 2 divides the end cover shell 1 into a first cavity 11 and a second cavity 12, wherein a feeding port 41 communicated with the first cavity 11 is arranged on the outer flange 4, the inner end cover is fixedly connected with the end part of the refrigerator, when a high-temperature medium enters the first cavity 11 through the feeding hole and further enters the refrigerator for cooling, the contact surfaces of the high-temperature medium in the first cavity 11 and the low-temperature medium in the second cavity 12 are two surfaces of the shell side rib plate 2, the surface area of the shell side rib plate is larger than that of the plane contact surface of the existing cast end cover, and the heat exchange effect is better.
It should be noted that, when the end cap is produced by casting the gray cast iron, it is difficult to mold the shell-side rib 2, that is, it is difficult to cast the surface of the shell-side rib 2 into a wave shape, a zigzag shape, or the like, because the shell-side rib 2 is relatively thin, and the shell-side rib 2 obtained by molding the above-described mold by casting is difficult to achieve the strength requirement, and is easy to break during the molding and use, which does not achieve the production requirement. Therefore, by the limitation of the traditional casting process, the end cover formed by casting gray cast iron has the advantages that the shell side rib plates 2 are mostly of straight steel plate structures, the contact surfaces of cold and hot media on two sides are small, and the heat exchange performance is difficult to promote.
The end cover of the nuclear power station refrigerator in the embodiment is preferably integrally formed through an electric melting additive manufacturing process. The nuclear power station refrigerator end cover is integrally formed by adopting an electric melting additive manufacturing technology, so that the problems of long manufacturing period, more welding seam connecting parts between the end cover shell 1 and each part and low product integrity and reliability can be solved, and the pressure bearing capacity of the nuclear power station refrigerator end cover can be improved to a certain extent.
It should be noted that the additive manufacturing technology is also called as 3D printing technology, and is a manufacturing method of melting metal raw materials by using arc heat and resistance heat as composite heat sources, stacking the metal raw materials layer by layer to form a metal component with a certain shape and size and a certain mechanical property through small molten pool, micro metallurgy and rapid solidification technology, and the formed structure material has good performance uniformity, and the printed products have been widely applied in the fields of aerospace, medical treatment and the like in recent years. Since additive manufacturing techniques are already well known to those skilled in the art, they will not be described in detail here.
The outer flange 4 of this embodiment is provided with a first mounting hole 42 along a circumferential array, and the inner flange 3 is provided with a second mounting hole 31 along a circumferential array. The outer flange 4 can be fixed to the cover plate via a first mounting hole 42 to close the inlet opening, and the inner flange 3 is connected to the end of the refrigerator via a second mounting hole 31. In order to facilitate the positioning and assembling of the end cover of the refrigerator of the nuclear power station and the refrigerator, a positioning notch (not shown in the figure) corresponding to the refrigerator is arranged on the outer wall of the inner side flange 3.
Since the heat exchange medium generally flows in the heat exchange tube, the first chamber 11 or the second chamber 12 is used for accommodating the heat exchange tube, and the surface of the shell side rib plate 2 is an arc surface tangent to the heat exchange tube. Therefore, the contact area of the cold and hot medium is greatly increased, the heat exchange speed is accelerated, and the heat exchange efficiency of the refrigerator is favorably improved.
In order to improve the strength of the shell-side rib plate 2 and prolong the service life of the end cover of the refrigerator of the nuclear power plant, the thickness of the shell-side rib plate 2 from the end part to the root part is gradually increased. The root of the shell-side rib plate 2 refers to one end of the shell-side rib plate 2 connected with the end cover shell 1.
In order to conveniently measure parameters such as medium pressure and temperature of the first cavity 11 and the second cavity 12 in the production process, the inner flange 3 is provided with a first parameter testing hole 32 and a second parameter testing hole 33, the first parameter testing hole 32 is communicated with the first cavity 11, and the second parameter testing hole 33 is communicated with the second cavity 12. In addition, in order to conveniently test the bearing capacity of the end cover of the refrigerator of the nuclear power station, the outer flange 4 is provided with a water pressure test hole 43 communicated with the first chamber 11. The first parameter testing hole 32 and the second parameter testing hole 33 can also play a role in testing the pressure bearing capacity of water injection in the evaporator of the refrigerator when the water pressure test is carried out.
To sum up, implement the utility model discloses following beneficial effect has:
1. the shell side rib plate 2, the inner side flange 3 and the outer side flange 4 are integrally formed on the end cover shell 1 by adopting an electric melting additive manufacturing process, so that the manufacturing period is short, no welding line exists, the structural integrity is good, and the reliability is high;
2. the shell side rib plate 2 formed by the electric melting additive manufacturing process has large surface area, and the cooling and heating mechanisms on the two sides have better heat exchange effect.
The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations are also considered as the protection scope of the present invention.
Claims (8)
1. An end cover of a nuclear power station refrigerator is characterized by comprising an end cover shell, wherein a shell side rib plate, an inner side flange and an outer side flange which are integrally formed with the end cover shell are arranged on the end cover shell;
the end cover shell is protruded towards one side, and the shell side rib plate is formed in the end cover shell and divides the end cover shell into a first cavity and a second cavity;
the inner side flange is formed on the outer periphery of the end cover shell and is used for being connected with the end part of the refrigerator;
the outer flange is formed on the convex side of the end cover shell, and a feeding port communicated with the first cavity is formed in the outer flange;
wherein the cross section of the shell side rib plate is wavy or zigzag.
2. The nuclear power plant chiller end cover of claim 1 wherein the first chamber or the second chamber is for receiving a heat exchange tube and the surface of the shell side rib plate is an arc tangent to the heat exchange tube.
3. The nuclear power plant chiller end cover of claim 1 or 2 wherein the shell side ribs increase in thickness from end to root.
4. The nuclear power plant refrigerator end cap of claim 1, wherein the nuclear power plant refrigerator end cap is integrally formed by an electrofusion additive manufacturing process.
5. The nuclear power plant chiller end cover of claim 1 wherein the inboard flange has a first parameter test port and a second parameter test port, the first parameter test port communicating with the first chamber and the second parameter test port communicating with the second chamber.
6. The nuclear power plant chiller end cover of claim 1 wherein the outboard flange has a hydrostatic test port communicating with the first chamber.
7. The nuclear power plant chiller end cover of claim 1 wherein the outer wall of the inner flange is provided with a locating notch.
8. The nuclear power plant chiller end cover of claim 1, wherein the outer flange is provided with a first mounting hole in a circumferential array and the inner flange is provided with a second mounting hole in a circumferential array.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020679855.2U CN212870306U (en) | 2020-04-28 | 2020-04-28 | Nuclear power station refrigerator end cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020679855.2U CN212870306U (en) | 2020-04-28 | 2020-04-28 | Nuclear power station refrigerator end cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212870306U true CN212870306U (en) | 2021-04-02 |
Family
ID=75186911
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020679855.2U Active CN212870306U (en) | 2020-04-28 | 2020-04-28 | Nuclear power station refrigerator end cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212870306U (en) |
-
2020
- 2020-04-28 CN CN202020679855.2U patent/CN212870306U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201722278U (en) | Novel metal mold for processing quartz crucible | |
| WO2020107540A1 (en) | Mold for implementing in-mold rapid forming and quenching | |
| CN105798262A (en) | Production process for integrated type water-cooled motor shell of new energy automobile | |
| CN212870306U (en) | Nuclear power station refrigerator end cover | |
| CN101664795B (en) | Method for manufacturing vehicle camshaft cover by semi-solid rheoforming | |
| CN109047708A (en) | The casting technique of electric machine casing | |
| EP3950171B1 (en) | Side mold and low-pressure hub casting mold | |
| CN114069091B (en) | Cooling structure suitable for new energy battery cell | |
| CN217121705U (en) | Side die sectional type matrix water-cooling insert | |
| CN213195542U (en) | Cooling structure for lower die of water-cooled die | |
| CN206839061U (en) | A kind of core chill mould for accelerating aluminium liquid solidification | |
| CN216176443U (en) | Automobile wheel hub production is with quick refrigerated mould | |
| CN105033185A (en) | Large sand core for casting inner hole in marine propeller | |
| CN211415928U (en) | Novel high-temperature-resistant mold | |
| CN204934515U (en) | Large-scale marine propeller casting endoporus core | |
| CN213888110U (en) | Low-pressure casting mold for wheel | |
| CN205967347U (en) | Car steering wheel metal framework's accurate rapid forming mould | |
| CN102009154A (en) | Method for producing automobile water pump impeller by semi-solid rheoforming and special cooling plate | |
| CN210334265U (en) | Side die for casting arc-shaped water cooling system | |
| CN217142287U (en) | Low-pressure casting die for aluminum wheel | |
| CN216632934U (en) | Ceramic metal sealing manufacturing device based on brazing | |
| CN217531578U (en) | Wax making machine capable of quickly shaping | |
| CN217370323U (en) | Casting mold for cooling water channel of shell of air compressor | |
| CN212761028U (en) | Upward-drawing continuous casting crystallizer for special-shaped copper strip and special-shaped copper strip production equipment | |
| CN216575369U (en) | Hot forging die for automobile bearing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |