CN209926340U - Anti-corrosion seamless steel pipe for high-pressure heater - Google Patents
Anti-corrosion seamless steel pipe for high-pressure heater Download PDFInfo
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- CN209926340U CN209926340U CN201920433727.7U CN201920433727U CN209926340U CN 209926340 U CN209926340 U CN 209926340U CN 201920433727 U CN201920433727 U CN 201920433727U CN 209926340 U CN209926340 U CN 209926340U
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- disk
- seamless steel
- steel pipe
- lid
- protection tube
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Abstract
The utility model discloses a prevent corroding seamless steel pipe for high pressure heater, including being responsible for and the auxiliary pipe, be responsible for and be equipped with sealing joint with the junction of auxiliary pipe, sealing joint includes protection tube and lid, the tip bolted connection who is responsible for has the protection tube, the inside edge of protection tube is provided with the recess buckle, the auxiliary pipe tip is equipped with the lid, the lid is hollow double-deck disk, the auxiliary pipe is connected with sealing joint through the hollow department at lid middle part, the lid includes disk one and disk two, be connected through the spliced pole between disk one and the disk two, disk one edge is provided with convex buckle arc, disk two edges are provided with convex sealed arc. The utility model adopts the sealing joint, thereby avoiding the erosion of steam or water flow and prolonging the service life of the seamless steel pipe; the mode of sectional connection is adopted, so that the connection and the replacement are convenient; the mode of combining the buckle and the bolt connection is adopted, and the leakage is prevented through multi-layer protection.
Description
Technical Field
The utility model relates to a steel pipe technical field especially relates to a prevent eroding seamless steel pipe for high pressure heater.
Background
The high-pressure heater is a device for heating the feed water by using partial extraction of the steam turbine. As a heat conversion device, the heat conversion device is mainly applied to a heat regenerative system of a large thermal power generating unit, and the heat transfer performance of the heat conversion device directly influences the economy and safety of the unit. Therefore, the heat transfer efficiency of the high-pressure heater is improved, the irreversible loss in the heat transfer process is reduced, and the method becomes one of important measures for solving the problem of high-efficiency utilization of energy.
The device comprises a shell and a pipe system, wherein a steam condensation section is arranged at the upper part of an inner cavity of the shell, a drainage cooling section is arranged at the lower part of the inner cavity of the shell, and a water supply inlet and a water supply outlet are arranged at the top ends of a water inlet pipe and a water outlet pipe. After the superheated steam enters the shell from the inlet, the feed water in the upper main spiral pipe can be heated, after the steam is condensed into water, the condensed hot water can heat part of the feed water in the lower cooling spiral pipe, and the condensed water after being utilized flows out of the body through the drainage outlet.
The high-pressure heater adopts seamless steel pipe to connect the operation more, and seamless steel pipe often can receive the erosion of steam and rivers in the use, especially oral siphon, outlet pipe or road junction, once receive the erosion will take place to leak and damage, will influence the use.
Seamless steel pipes are often subject to corrosion from several sources:
(1) scouring and eroding: the superheated steam cooling section and the tube bundle at the outlet thereof are easily eroded by the wet steam. If the steam contains some moisture, erosion damage can occur in the steam section. The tube bundle near the exit of the steam cooling section has more opportunity to suffer from steam erosion. It is also common that the tube bundle near the inlet of the hydrophobic cooling section is subjected to steam-water erosion.
(2) The inlet end erosion is a combined erosion and corrosion process, the principle of which is that the oxide film formed on the surface of the tube wall metal is destroyed and carried away by the highly turbulent feed water, and in such a continuous process, the metal material is continuously lost, finally causing the tube to be damaged, and sometimes the damaged surface can be enlarged to the weld joint of the tube end and even the tube plate.
(3) And (3) corrosion: corrosion damage is a common form of high pressure heater tube bundle damage. The following 8 cases are distinguished: general uniform corrosion, galvanic corrosion, interstitial corrosion, pitting corrosion, metal intergranular corrosion, selective leaching or separation, erosion corrosion, stress corrosion.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model provides a seamless steel tube for anti-corrosion high-pressure heater.
The utility model adopts the technical proposal that: the utility model provides a prevent corroding seamless steel pipe for high pressure heater, is including being responsible for and the auxiliary pipe, the junction of being responsible for and the auxiliary pipe is equipped with sealing joint, sealing joint includes protection tube and lid, the tip bolted connection who is responsible for has the protection tube, the inside edge of protection tube is provided with the recess buckle, the auxiliary pipe tip is equipped with the lid, the lid is hollow double-deck disk, the auxiliary pipe is connected with sealing joint through the hollow of lid middle part, the lid includes disk one and disk two, be connected through the cavity spliced pole between disk one and the disk two, disk edge is provided with convex buckle arc, disk two edges are provided with convex sealed arc.
Further, the diameter of the second round plate is larger than that of the first round plate, and the diameter of the second round plate is larger than that of the protection tube.
Furthermore, the buckle arc protrudes out of the first wafer body, and the sealing arc extends out of the second wafer in the connecting direction of the protection tube.
Further, the connection position of the surface of the protection pipe and the cover body is provided with external threads.
Further, the inner surface of the sealing arc is provided with internal threads matched with the outer surface of the protection pipe.
Further, the groove buckling opening on the inner edge of the protection tube is V-shaped.
Furthermore, the end part of the auxiliary pipe is provided with a circular groove, the cover plate is clamped in the circular groove, and the distance between the circular groove and the edge of the auxiliary pipe is 5-7 mm.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model discloses well adoption sealing joint connects the tip of being responsible for with the auxiliary pipe, avoids the erosion of steam or rivers, prolongs seamless steel pipe's life.
2. And a sectional connection mode is adopted, so that the connection and the replacement are convenient.
3. The mode that adopts buckle and bolted connection to make up, multilayer protection, zonulae occludens prevent to leak.
Drawings
Fig. 1 is the structural schematic diagram of the seamless steel tube for the anti-corrosion high-pressure heater of the utility model.
Wherein: 1-main pipe, 2-auxiliary pipe, 3-sealing joint, 4-first round piece, 5-second round piece, 6-hollow connecting column, 7-buckling arc, 8-sealing arc, 9-circular groove, 31-protecting pipe, 32-cover body and 311-groove buckle.
Detailed Description
In order to deepen the understanding of the present invention, the present invention is further explained with reference to the drawings and the embodiments, which are only used to explain the present invention and are not limited to the protection scope of the present invention.
As shown in fig. 1, an anti-corrosion seamless steel tube for a high-pressure heater comprises a main tube 1 and a secondary tube 2, a sealing joint 3 is arranged at the joint of the main tube 1 and the secondary tube 2, the sealing joint 3 comprises a protection tube 31 and a cover body 32, the end part of the main tube 1 is connected with the protection tube 31 through a bolt, a groove buckle 311 is arranged at the inner edge of the protection tube 31, the end part of the secondary tube 2 is provided with the cover body 32, the cover body 32 is a hollow double-layer disc, the secondary tube 2 is connected with the sealing joint 3 through the hollow part in the middle of the cover body 32, the cover body 32 comprises a first disc 4 and a second disc 5, the first disc 4 and the second disc 5 are connected through a connecting column 6, the edge of the first disc 4 is provided with a convex buckle arc 7, and the edge of the.
In the above embodiment, the snap arc 7 protrudes out of the first wafer 4, the opening of the groove snap 311 on the inner edge of the protection tube 31 is in a "V" shape, and the snap arc 7 can be engaged with the groove snap 311.
In the above embodiment, the diameter of the second wafer 5 is greater than the diameter of the first wafer 4, the diameter of the second wafer 5 is greater than the diameter of the protection tube 31, the sealing arc 8 extends to protrude out of the second wafer 5 in the connection direction of the protection tube 31, so that the sealing arc 8 can wrap the protection tube 31, an external thread is arranged at the connection position of the surface of the protection tube 31 and the cover body 32, an internal thread matched with the external surface of the protection tube 31 is arranged on the internal surface of the sealing arc, the external thread is matched with the internal thread, and the sealing arc.
In the above embodiment, when the sealing joint 3 is used to protect a seamless steel pipe, the end of the main pipe 1 is bolted to the protection pipe 31, the cover 32 is clamped in the annular groove 9 at the end of the secondary pipe 2, the secondary pipe 2 is inserted into the protection pipe 31, because the edge of the opening of the groove buckle 311 has a certain inclination, the first wafer 4 of the cover 32 easily enters the protection pipe 31, the buckle arc 7 is clamped with the V-shaped opening of the groove buckle 311, the outer sealing arc 8 is rotated, the sealing arc 8 is tightly connected with the protection pipe 31, the joint is prevented from being corroded or cracked due to excessive pressure, and the edge of the connecting column 6 is further provided with a sealing ring for sealing and preventing leakage.
The embodiment of the present invention discloses a preferred embodiment, but not limited thereto, and those skilled in the art can easily understand the spirit of the present invention according to the above embodiment, and make different extensions and changes, but do not depart from the spirit of the present invention, all of which are within the protection scope of the present invention.
Claims (7)
1. The utility model provides an anti-erosion seamless steel pipe for high pressure heater, is including being responsible for and the auxiliary line, its characterized in that: be responsible for and the junction of looped pipeline is equipped with sealing joint, sealing joint includes protection tube and lid, the tip bolted connection who is responsible for has the protection tube, the inside edge of protection tube is provided with the recess buckle, the looped pipeline tip is equipped with the lid, the lid is hollow double-deck disk, the looped pipeline is connected with sealing joint through the hollow at lid middle part, the lid includes disk one and disk two, be connected through the cavity spliced pole between disk one and the disk two, disk one edge is provided with convex buckle arc, disk two edges are provided with convex sealed arc.
2. The erosion preventing seamless steel pipe for an autoclave as set forth in claim 1, wherein: the diameter of the second round piece is larger than that of the first round piece, and the diameter of the second round piece is larger than that of the protection tube.
3. The corrosion-resistant seamless steel pipe for an autoclave as claimed in claim 1 or 2, wherein: the buckle arc protrudes out of the first wafer body, and the sealing arc extends out of the second wafer in the connecting direction of the protection tube.
4. The erosion preventing seamless steel pipe for an autoclave as set forth in claim 1, wherein: and the joint of the surface of the protection pipe and the cover body is provided with external threads.
5. The erosion preventing seamless steel pipe for an autoclave as set forth in claim 4, wherein: the inner surface of the sealing arc is provided with internal threads matched with the outer surface of the protection tube.
6. The erosion preventing seamless steel pipe for an autoclave as set forth in claim 1, wherein: the groove buckle opening at the inner edge of the protection tube is V-shaped.
7. The erosion preventing seamless steel pipe for an autoclave as set forth in claim 1, wherein: the end of the auxiliary pipe is provided with a circular groove, and the cover body is clamped in the circular groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920433727.7U CN209926340U (en) | 2019-04-02 | 2019-04-02 | Anti-corrosion seamless steel pipe for high-pressure heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920433727.7U CN209926340U (en) | 2019-04-02 | 2019-04-02 | Anti-corrosion seamless steel pipe for high-pressure heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209926340U true CN209926340U (en) | 2020-01-10 |
Family
ID=69072308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920433727.7U Expired - Fee Related CN209926340U (en) | 2019-04-02 | 2019-04-02 | Anti-corrosion seamless steel pipe for high-pressure heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209926340U (en) |
-
2019
- 2019-04-02 CN CN201920433727.7U patent/CN209926340U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200110 |
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| CF01 | Termination of patent right due to non-payment of annual fee |