CN117189869B - Elbow pipe component of pressure vessel and pressure vessel - Google Patents
Elbow pipe component of pressure vessel and pressure vessel Download PDFInfo
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- CN117189869B CN117189869B CN202311444148.XA CN202311444148A CN117189869B CN 117189869 B CN117189869 B CN 117189869B CN 202311444148 A CN202311444148 A CN 202311444148A CN 117189869 B CN117189869 B CN 117189869B
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- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 254
- 239000010936 titanium Substances 0.000 claims abstract description 250
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 250
- 239000010410 layer Substances 0.000 claims abstract description 48
- 239000011248 coating agent Substances 0.000 claims abstract description 31
- 238000000576 coating method Methods 0.000 claims abstract description 31
- 238000007789 sealing Methods 0.000 claims abstract description 31
- 238000005452 bending Methods 0.000 claims abstract description 21
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 15
- 239000010959 steel Substances 0.000 claims abstract description 15
- 239000011247 coating layer Substances 0.000 claims abstract description 4
- 238000005253 cladding Methods 0.000 claims description 5
- 238000010276 construction Methods 0.000 claims description 2
- 230000007797 corrosion Effects 0.000 abstract description 12
- 238000005260 corrosion Methods 0.000 abstract description 12
- 239000000463 material Substances 0.000 description 23
- 238000003466 welding Methods 0.000 description 23
- 239000002131 composite material Substances 0.000 description 9
- 238000005219 brazing Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 229910000851 Alloy steel Inorganic materials 0.000 description 4
- 229910000975 Carbon steel Inorganic materials 0.000 description 4
- 239000010962 carbon steel Substances 0.000 description 4
- 239000010935 stainless steel Substances 0.000 description 4
- 229910001220 stainless steel Inorganic materials 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000013329 compounding Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 150000003608 titanium Chemical class 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000009365 direct transmission Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
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
Abstract
The application relates to a bent pipe component of a pressure container and the pressure container, wherein the pressure container comprises a cylinder, the side wall of the cylinder comprises a base layer and a titanium coating layer compounded on the inner wall surface of the base layer, and the side wall of the cylinder is provided with a connecting hole; the bent pipe component comprises a connecting pipe, a titanium pipe and a fixing part; the connecting pipe and the base layer are made of steel, the top end of the connecting pipe and the base layer are welded and fixed along the circumferential direction of the connecting hole, and the bottom of the connecting pipe is provided with a connecting part; the titanium pipe is provided with a bending structure, and the top end of the titanium pipe penetrates through the connecting pipe and the connecting hole and is welded with the titanium coating in a sealing way along the circumferential direction; the outer wall of the titanium pipe is also fixedly provided with a titanium mounting piece along the radial direction outwards, and the titanium mounting piece is fixed with the connecting part through the fixing part. Therefore, the corrosion resistance of the bent pipe component of the pressure container can be guaranteed, and meanwhile, the bent pipe component is guaranteed to have better pressure load bearing capacity and service life.
Description
Technical Field
The application relates to the technical field of pressure vessels, in particular to a bent pipe component of a pressure vessel and the pressure vessel.
Background
Titanium materials have good chloride ion resistance and corrosion resistance, and are widely used for pressure vessels such as kettles and tanks. The titanium material and the titanium material have better weldability, and the titanium material and the steel material can be connected only by adopting brazing and can not be connected by adopting fusion welding, but the brazing strength bearing capacity is weaker.
The titanium pressure vessel mainly has three structural forms of pure titanium, titanium composite plates and an integral titanium lining, wherein the pure titanium has higher price and is generally used for equipment with small wall thickness and low pressure, and the equipment with large wall thickness and high pressure usually adopts a titanium composite plate or an integral titanium lining structure.
The titanium composite board comprises a base layer and a titanium coating, and the base layer and the titanium coating are tightly combined together through explosion cladding or rolling cladding technology, so that the titanium composite board has certain combination strength; the integral titanium lining structure comprises a base layer and a titanium lining layer, wherein the titanium lining layer is stuck on the surface of the base layer, a certain gap exists between the titanium lining layer and the base layer, and tight and firm combination cannot be realized. The base layers of the titanium composite plate and the integral titanium lining structure are generally carbon steel, low alloy steel or stainless steel and are used for bearing loads such as pressure, and the titanium coating layer and the lining layer do not participate in bearing and are only used for corrosion resistance.
A bending structure is required to be arranged on a part of the connecting pipe of the pressure vessel, such as a bottom discharging pipe of the pressure vessel, but in the prior art, a process for preparing the bent pipe through a titanium composite plate or an integral titanium lining structure does not exist, if the bent pipe is prepared through pure titanium, the top end of the bent pipe penetrates through a base layer of a cylinder of the pressure vessel and is welded with a titanium coating of the cylinder, when materials in the pressure vessel are introduced into the bent pipe, the materials can provide axial pressure for the bent pipe at the bending structure, so that a welding seam between the bent pipe and the titanium coating bears a larger pressure load, and the bent pipe is easy to damage and the service life is influenced.
Therefore, how to ensure the corrosion resistance of the bent pipe component of the pressure container, and simultaneously ensure the bent pipe component to have better capability of bearing pressure load and improve the service life is a technical problem which needs to be solved by the technicians in the field.
Disclosure of Invention
The purpose of this application is to provide a pressure vessel's return bend component and pressure vessel, when guaranteeing pressure vessel's return bend component's corrosion resistance, guarantees that the return bend component has better ability of bearing pressure load, improvement life.
In order to solve the technical problems, the application provides an elbow component of a pressure container, the pressure container comprises a cylinder, the side wall of the cylinder comprises a base layer and a titanium coating compounded on the inner wall surface of the base layer, and the side wall of the cylinder is provided with a connecting hole; the bent pipe component comprises a connecting pipe, a titanium pipe and a fixing part; the connecting pipe and the base layer are made of steel, the top end of the connecting pipe and the base layer are welded and fixed along the circumferential direction of the connecting hole, and the bottom of the connecting pipe is provided with a connecting part; the titanium pipe is provided with a bending structure, and the top end of the titanium pipe passes through the connecting pipe and the connecting hole and is welded with the titanium coating in a sealing way along the circumferential direction; the outer wall of the titanium pipe is further fixedly provided with a titanium mounting piece along the radial direction outwards, and the titanium mounting piece is fixed with the connecting portion through the fixing portion.
Optionally, the connecting portion is flange, the fixed part is flange, flange cover is located outside the titanium pipe, the titanium installed part is for pressing from both sides locates flange with flange between the titanium baffle, flange with flange passes through the fastener to be fixed.
Optionally, the titanium pipe comprises a first section located inside the connecting pipe and a second section located outside the connecting pipe, the second section is provided with the bending structure, and the first section forms a titanium lining inside the connecting pipe.
Optionally, the first section and the second section are integrally formed structures.
Optionally, the first section and the second section are of split type structure, one side end face of the titanium baffle is fixed with the end of the first section in a sealing way along the circumferential direction, and the other side end face of the titanium baffle is fixed with the end of the second section in a sealing way along the circumferential direction.
Optionally, the titanium baffle includes first annular plate and second annular plate, first annular plate with the tip of first section is sealed fixed along circumference, the second annular plate with the tip of second section is sealed fixed along circumference, still press from both sides between first annular plate with the annular sealing pad is equipped with between the second annular plate.
Optionally, the outer edge of the first ring plate is welded and fixed with the connecting flange, and/or the outer edge of the second ring plate is welded and fixed with the fixing flange.
Optionally, the fixing flange and the connecting flange are fixed by bolts, and the ends of the bolts are fixed by double nuts.
Optionally, the device further comprises a titanium cover plate and a titanium backing plate, wherein the titanium cover plate and the titanium backing plate are of annular structures, the titanium coating is provided with a hole structure, and the connecting holes are positioned in a projection area of the hole structure on the surface of the base layer; the titanium backing plate is sleeved outside the titanium pipe and is positioned in the hole structure, the titanium cover plate covers the upper surface of the titanium backing plate, the outer edge of the titanium cover plate and the surface of the titanium coating are welded in a circumferential sealing mode, and the inner edge of the titanium cover plate and the outer wall of the end portion of the titanium pipe are welded in a circumferential sealing mode.
The present application also provides a pressure vessel comprising a elbow member as described above.
The bent pipe component of the pressure container and the pressure container provided by the application have the following beneficial effects:
the top of the connecting pipe is welded and fixed with the base layer along the circumferential direction of the connecting hole, and the connecting pipe and the base layer are made of steel, so that the welding connection strength between the connecting pipe and the base layer can be ensured. The base layer and the adapter can be welded to form a steel base body with relatively high structural strength. The top of titanium pipe passes takeover and connecting hole to seal the welding along circumference with the titanium coating, the outer wall of titanium pipe has still set firmly titanium installed part along radial outside, and titanium pipe, titanium coating and titanium installed part are pure titanium material, and form an holistic titanium part through the welding, this titanium part is direct to contact with pressure vessel inside material, guarantees pressure vessel's corrosion resistance, avoids leaking the condition because part is corroded by the material.
That is, the pressure vessel ensures overall structural strength at the junction of the cylinder and the elbow member by the steel base body and corrosion resistance by the titanium component of pure titanium.
The bottom of the connecting pipe is fixedly provided with a connecting part, and the connecting part and the connecting pipe can be of an integrally formed structure or of a split structure and can be fixed through welding. The fixing part is not connected with the titanium pipe, and the titanium mounting piece can be fixed with the connecting part through the fixing part.
The titanium pipe is provided with the bending structure, and the bending structure is positioned below the titanium mounting piece, so that the titanium pipe is of a pure titanium structure, has good corrosion resistance and better capability of bearing pressure load, is easy to prepare, and can reduce manufacturing difficulty and simplify manufacturing process compared with an elbow pipe adopting a titanium composite plate or an integral titanium lining structure.
The material that flows through this titanium pipe can cause the impact to the titanium pipe in bending department for the titanium pipe receives the impact force, and under this impact force, the titanium pipe has to keeping away from one side of barrel and the trend that breaks away from with the barrel, and drive titanium installed part and remove, and the titanium installed part can receive the blocking of fixed part, and pass through the fixed part with effort transmission to the base member, specific, the transmission route of effort is titanium installed part, fixed part, connecting portion, takeover and basic unit, in this way, can avoid the whole direct transmission to the welding seam department between titanium coating and the titanium pipe of the effort that the titanium pipe received. The structural strength of the steel matrix formed by the base layer and the connecting pipe is higher, so that the structural stability and the capability of bearing pressure load of the bent pipe component can be ensured, and the service life is prolonged.
Drawings
FIG. 1 is a partial cross-sectional view of a pressure vessel provided by an embodiment of the present application;
FIG. 2 is an enlarged view of A in FIG. 1;
FIG. 3 is a partial cross-sectional view of a pressure vessel provided by an embodiment of the present application;
FIG. 4 is an enlarged view of B in FIG. 3;
fig. 5 is a cross-sectional view of the elbow member of fig. 3 prior to completion of assembly.
In fig. 1 to 5, reference numerals are explained as follows:
a 100 elbow member; 200 barrels, 201 base layers and 202 titanium coating layers;
1 connecting pipe and 11 connecting flange;
2 titanium tube, 21 bending structure, 22 first section, 23 second section;
3 titanium baffle plate, 31 first annular plate, 32 second annular plate;
4, fixing a flange;
5, an annular sealing gasket;
6, a bolt;
7, a nut;
a titanium cover plate 8;
9 titanium backing plate.
Detailed Description
In order to make the technical solution of the present application better understood by those skilled in the art, the present application will be further described in detail with reference to the accompanying drawings and specific embodiments.
Embodiments of the present application provide a elbow member and a pressure vessel provided with a cylinder 200 and an elbow member 100, as shown in fig. 1 and 3.
The side wall of the barrel 200 is a titanium composite member, the side wall of the barrel 200 comprises a top wall, a bottom wall and a circumferential wall of the barrel 200, the side wall of the barrel 200 comprises a base layer 201 and a titanium coating 202 compounded on the inner wall surface of the base layer 201, wherein the base layer 201 is made of steel, particularly carbon steel, low alloy steel or stainless steel, the structural strength of the barrel 200 can be ensured, the titanium coating 202 is made of titanium, the inner wall of the barrel 200 is ensured to have good corrosion resistance and sealing performance, and the base layer 201 and the titanium coating 202 are tightly combined together through explosion compounding or rolling compounding technology, so that the base layer 201 and the titanium coating 202 have certain bonding strength.
The bent pipe member 100 has a bending structure 21, a connecting hole is formed in a side wall of the cylinder 200, one end of the bent pipe member 100 is fixedly connected with the connecting hole, and the other end of the bent pipe member 100 extends out of a bracket to be connected with an external pipeline, wherein the bracket is a component for supporting the cylinder 200, and materials in the pressure vessel can reach the external connecting pipeline or the vessel through the bent pipe member 100.
As shown in fig. 2 and 4, the elbow member 100 includes a connection pipe 1, a titanium pipe 2 and a fixing portion, wherein the connection pipe 1 is made of steel, such as carbon steel, low alloy steel or stainless steel, and the top end of the connection pipe 1 and the base layer 201 are welded and fixed along the circumferential direction of the connection hole, so as to form a steel base body with relatively high structural strength. The top of titanium pipe 2 passes takeover 1 and connecting hole to seal the welding along circumference with titanium coating 202, the outer wall of titanium pipe 2 still has set firmly titanium installed part along radial outside, as shown in fig. 2, this titanium installed part is titanium baffle 3, titanium pipe 2, titanium coating 202 and titanium baffle 3 are pure titanium material, and form an holistic titanium part through the welding, this titanium part is direct to contact with pressure vessel internal material, guarantee pressure vessel's corrosion resistance, avoid the condition that takes place to leak because the part is corroded by the material.
That is, the pressure vessel ensures the overall structural strength at the junction of the cylinder 200 and the elbow member 100 by the steel base body, and the corrosion resistance by the titanium member of pure titanium.
The bottom end of the connecting pipe 1 is fixedly provided with a connecting part, as shown in fig. 2, the connecting part is a connecting flange 11, and the connecting flange 11 and the connecting pipe 1 can be of an integrally formed structure or a split structure and can be fixed by welding. As shown in fig. 2, the fixing part is a fixing flange 4, the fixing flange 4 is sleeved outside the titanium tube 2, no connection exists between the fixing flange 4 and the connecting flange 11, the fixing flange 4 is fixed with the connecting flange 11 through a fastener, and meanwhile, the titanium baffle 3 is clamped between the fixing flange 4 and the connecting flange 11.
The titanium pipe 2 is provided with the bending structure 21, and the bending structure 21 is positioned on one side of the titanium baffle 3 far away from the cylinder 200, and the titanium pipe 2 is of a pure titanium structure, so that the titanium pipe has good corrosion resistance and better capability of bearing pressure load, and the pure titanium bent pipe is easy to prepare, so that compared with the bent pipe adopting a titanium composite plate or an integral titanium lining structure, the manufacturing difficulty can be reduced, and the manufacturing process can be simplified.
The material flowing through the titanium tube 2 will impact the titanium tube 2 at the bending structure 21, so that the titanium tube 2 receives an impact force as shown by double-headed arrows in fig. 1 and 3, under the action of the impact force, the titanium tube 2 has a tendency to move to a side far away from the cylinder 200 and separate from the cylinder 200, and drives the titanium baffle 3 to move, while the titanium baffle 3 will be blocked by the fixing flange 4 and transmit the acting force to the substrate through the fixing flange 4, specifically, the force transmission path is the titanium baffle 3, the fixing flange 4, the fastening piece, the connecting flange 11, the connecting tube 1 and the base layer 201, so that the force received by the titanium tube 2 can be prevented from being directly transmitted to the welding seam between the titanium coating 202 and the titanium tube 2. The structural strength of the steel matrix formed by the base layer 201 and the connecting pipe 1 is high, so that the structural stability and the capability of bearing pressure load of the bent pipe member 100 can be ensured, and the service life is prolonged.
In this embodiment, the specific structures of the fixing portion, the connecting portion and the titanium mounting member are not limited, for example, the connecting portion may be set to be the connecting flange 11, the titanium mounting member is an annular flange, the fixing portion is a fastening member, and the connecting flange 11 and the annular flange may be directly fixed by the fastening member. Alternatively, the connecting portion and the fixing portion may be provided as mutually-fitted clamping members, and the titanium mounting member may be clamped and fixed by the clamping members.
The fixing part is set to be the fixing flange 4, the connecting part is set to be the connecting flange 11, and the titanium mounting piece is set to be the titanium baffle 3 clamped between the fixing flange 4 and the connecting flange 11, so that the whole structure and the mounting operation can be simplified, and the structural requirement on the titanium mounting piece is reduced.
For convenience of explanation, hereinafter, description will be given by taking a connection portion as a connection flange 11, a titanium mount as a titanium baffle 3, and a fixing portion as a fixing flange 4 as an example.
In this embodiment, the material of the fixing flange 4 is not limited, for example, the material of the fixing flange 4 may be steel, specifically carbon steel, low alloy steel or stainless steel, or the material of the fixing flange 4 may be titanium, and when the material of the fixing flange 4 is steel, the structural strength is ensured, and the cost is reduced.
The side wall of the barrel 200 comprises a top wall, a bottom wall and a circumferential wall of the barrel 200, as shown in fig. 1 and 3, the connecting hole can be formed in the bottom wall, and after the material in the barrel 200 flows out, the connecting hole can act on the bending structure 21 and provide downward acting force on the titanium tube 2 at the bending structure 21, so that the titanium tube 2 has a downward moving trend. Of course, the connection hole may be provided in either the top wall or the circumferential wall, and is not particularly limited herein.
As shown in fig. 1 and 3, the titanium tube 2 comprises a first section 22 and a second section 23, wherein the first section 22 is positioned in the connecting tube 1, the outer wall of the first section 22 is attached to the inner wall of the connecting tube 1 and forms a titanium lining in the connecting tube 1, the second section 23 is positioned outside the connecting tube 1, the second section 23 is provided with a bending structure 21, the bottom of the first section 22 and the top of the second section 23 are communicated and sealed and fixed, and the titanium baffle 3 which is relatively fixed with the titanium tube 2 is clamped between the fixed flange 4 and the connecting flange 11, so that the titanium baffle 3 is positioned between the first section 22 and the second section 23 and is respectively fixed with the first section 22 and the second section 23. This arrangement can simplify the overall structure of the titanium tube 2.
In this embodiment, the size of the titanium tube 2 is not particularly limited, and since the second section 23 is provided with the bending structure 21, the second section 23 needs to bear pressure, so that the second section 23 needs to calculate the wall thickness according to the calculation formula of the pressure-bearing cylinder, so as to ensure that the structural strength of the second section 23 meets the pressure-bearing requirement.
The first section 22 and the second section 23 may be integrally formed to simplify the processing process and avoid leakage of materials at the junction between the first section 22 and the second section 23; alternatively, the first section 22 and the second section 23 may be of a split construction to facilitate replacement and repair operations for the first section 22 and the second section 23.
When the first section 22 and the second section 23 are of an integral structure, the titanium baffle 3 may be an annular plate body as shown in fig. 2, or the titanium baffle 3 may be arranged as at least two plates arranged at intervals along the circumferential direction of the titanium pipe 2, and the arrangement of the annular plate body can ensure the action stability between the titanium baffle 3 and the connecting flange 11 and the fixing flange 4.
In addition, at this time, the titanium baffle 3 and the titanium tube 2 may be integrally formed, so that the installation process may be simplified, or the titanium baffle 3 and the titanium tube 2 may be separately formed as shown in fig. 2 and fixed by welding, so as to simplify the processing process and reduce the processing precision requirement.
As shown in fig. 2, when the titanium baffle 3 is an annular plate body and is welded and fixed with the titanium tube 2, the upper surface and the lower surface of the annular plate body are respectively welded with the outer wall of the titanium tube 2 along the circumferential direction, so that the connection strength between the titanium baffle 3 and the titanium tube 2 is further ensured, and the stability of the overall structure is further ensured.
When the first section 22 and the second section 23 are of a split structure, the titanium baffle 3 is an annular plate body.
The titanium baffle 3 can be of an integrated structure, the upper surface of the titanium baffle 3 and the first section 22 are welded in a circumferential sealing manner, the lower surface of the titanium baffle 3 and the second section 23 are welded in a circumferential sealing manner, and the tightness of the joint between the first section 22 and the second section 23 is ensured. At this time, the titanium baffle 3 may be welded to the first section 22 and the second section 23, or the titanium baffle 3 may be integrally formed with the first section 22 and welded to the second section 23, or the titanium baffle 3 may be integrally formed with the second section 23 and welded to the first section 22. This simplifies the overall structure.
Or, as shown in fig. 4 and fig. 5, the titanium baffle 3 is in a split structure, and specifically includes a first ring plate 31 and a second ring plate 32, where the first ring plate 31 is integrally formed at the bottom end of the first section 22, or the upper surface of the first ring plate 31 is welded with the outer wall of the bottom end of the first section 22 in a circumferential sealing manner, and the second ring plate 32 is integrally formed at the top end of the second section 23, or the lower surface of the second ring plate 32 is welded with the outer wall of the top end of the second section 23 in a circumferential sealing manner, and an annular sealing gasket 5 is further sandwiched between the first ring plate 31 and the second ring plate 32, so that the sealing performance between the first ring plate 31 and the second ring plate 32 is ensured, and the sealing performance of the joint between the first section 22 and the second section 23 is ensured. So set up, conveniently carry out welding operation.
In the mounted state, as shown in fig. 4, the upper end surface of the first ring plate 31 abuts against the connecting flange 11, the lower end surface of the second ring plate 32 abuts against the fixing flange 4, and after the fixing flange 4 and the connecting flange 11 are fixed by the fastening piece, the annular sealing gasket 5 can be ensured to be in a clamped state between the first ring plate 31 and the second ring plate 32, and the tightness between the first section 22 and the second section 23 is ensured.
The internal diameter of the annular sealing gasket 5 needs to be greater than the internal diameter of the first annular plate 31, and meanwhile, the internal diameter of the annular sealing gasket 5 also needs to be greater than the internal diameter of the second annular plate 32, so that the arrangement can avoid the annular sealing gasket 5 to block the circulation space in the titanium tube 2, and ensure that the material circulates smoothly in the titanium tube 2.
Further, the outer diameter of the annular sealing gasket 5 is required to be smaller than the outer diameter of the first annular plate 31 and the outer diameter of the second annular plate 32, so that the annular sealing gasket 5 is completely located between the first annular plate 31 and the second annular plate 32, protection can be provided for the annular sealing gasket 5, and service life is guaranteed.
As shown in fig. 5, the first ring plate 31 is welded to the connection flange 11, specifically by brazing.
When the elbow member 100 is assembled, the bottom of the first section 22 is welded and fixed with the first annular plate 31, the top end of the adapter tube 1 is welded and fixed with the base layer 201, then the first section 22 passes through the adapter tube 1 from bottom to top, the upper surface of the first annular plate 31 is abutted against the lower surface of the connecting flange 11, then the first annular plate 31 and the connecting flange 11 are welded and connected through brazing, the first annular plate 31, the first section 22 and the adapter tube 1 are kept stable in structure, and then the top end of the first section 22 is welded with the titanium coating 202.
Or, after the bottom of the first section 22 and the first annular plate 31 are welded and fixed, the first section 22 passes through the adapter tube 1 from bottom to top, so that the upper surface of the first annular plate 31 is abutted against the lower surface of the connecting flange 11, then the first annular plate 31 and the connecting flange 11 are welded and connected through brazing, so that the first annular plate 31, the first section 22 and the adapter tube 1 keep stable in structure, then the adapter tube 1 and the base layer 201 are welded and fixed, and finally the top end of the first section 22 and the titanium coating 202 are welded.
In this embodiment, the assembly welding sequence of the first section 22 and the adapter tube 1 is not limited, but the first annular plate 31 is welded with the first section 22, then the top end of the first section 22 passes through the adapter tube 1, so that the upper end surface of the first annular plate 31 abuts against the lower surface of the connecting flange 11, and finally the top end of the first section 22 is welded with the titanium coating 202. Therefore, the first annular plate 31 and the connecting flange 11 are welded and fixed, so that structural stability during welding between the first section 22 and the titanium coating 202 can be ensured, and welding operation is facilitated.
Likewise, it is also possible to weld between the second ring plate 32 and the fastening flange 4 along the outer periphery of the second ring plate 32, here also by brazing. Specifically, the fixing flange 4 is sleeved outside the second section 23, then the top end of the second section 23 is welded and fixed with the second annular plate 32, the fixing flange 4 is moved, the fixing flange 4 is made to be attached to the lower end face of the second annular plate 32, the second annular plate 32 is welded and connected with the fixing flange 4, finally the annular sealing gasket 5 is placed between the first annular plate 31 and the second annular plate 32, as shown in fig. 5, the first annular plate 31 and the second annular plate 32 are close to each other, the annular sealing gasket 5 is clamped, and finally the connecting flange 11 and the fixing flange 4 are connected and fixed through bolts 6.
The convenience of assembling the elbow member 100 can be improved by welding and fixing the first ring plate 31 to the connecting flange 11 and welding and fixing the second ring plate 32 to the fixing flange 4.
The flange 11 and the fixed flange 4 are connected through the bolts 6, specifically, the bolts 6 penetrate through the mounting holes of the flange 11 and the fixed flange 4 and are fixed through the nuts 7, and in order to further ensure the fixing stability, the double-nut 7 structure is matched with the bolts 6, so that the nuts 7 and the bolts 6 are prevented from loosening after long-time use.
As shown in fig. 2 and 4, the elbow member 100 further includes a titanium cover plate 8 and a titanium backing plate 9, and the titanium cover plate 8 and the titanium backing plate 9 are both annular structures.
The side wall of the cylinder 200 is required to peel off and remove the partial titanium coating 202 at the connection hole to facilitate the welding operation between the butt joint pipe 1 and the base layer 201, and therefore, the titanium coating 202 is further provided with a hole structure, the corresponding titanium coating 202 of the hole structure is peeled off and removed, and the connection hole is located in the projection area of the hole structure on the surface of the base layer 201, that is, the cross-sectional area of the connection hole is smaller than that of the hole structure.
After the connection pipe 1 and the base layer 201 are welded, the titanium base plate 9 is sleeved outside the titanium pipe 2 and placed in the hole structure, it is easy to understand that the titanium base plate 9 is matched with the hole structure and fills the hole structure, then the titanium cover plate 8 is sleeved outside the titanium pipe 2 and placed above the titanium base plate 9, the area of the titanium cover plate 8 is larger than that of the titanium base plate 9, the projection of the titanium cover plate 8 on the surface of the base layer 201 is a first area, the projection of the titanium base plate 9 on the surface of the base layer 201 is a second area, and the second area completely falls into the first area, so that the titanium cover plate 8 can cover the upper surface of the titanium base plate 9, the outer edge of the titanium cover plate 8 can be lapped on the surface of the titanium coating 202, then the inner edge of the titanium cover plate 8 and the outer wall of the end part of the titanium pipe 2 are welded in a circumferential sealing manner, and the outer edge of the titanium cover plate 8 and the titanium coating 202 are welded in a circumferential sealing manner, and the sealing between the connection pipe 1 and the titanium coating 202 can be completed.
That is, in the present embodiment, the top end of the titanium pipe 2 is not directly welded to the titanium cladding 202, but is welded to the titanium cladding 202 through the titanium cover plate 8.
The titanium backing plate 9 can fill the hole structure and separate the titanium cover plate 8 from the base layer 201 and the connecting pipe 1, so that the titanium cover plate 8 and the base layer 201 are prevented from being welded by mistake when the titanium cover plate 8 is welded.
Specifically, in this embodiment, the titanium pad 9 is also made of pure titanium, and after the titanium pad 9 is placed in the hole structure, the outer edge of the titanium pad 9 and the inner edge of the hole structure can be connected by spot welding, and meanwhile, the inner edge of the titanium pad 9 and the outer wall of the titanium tube 2 are connected by spot welding to ensure the installation stability of the titanium pad 9.
After the assembly and welding of the bent pipe member 100 are completed, a leakage test can be performed to check the compactness of the seal welding of the titanium cover plate 8, and after the compactness is qualified, the whole equipment is subjected to a hydraulic test. How to perform the leak test and the hydrostatic test is well known to those skilled in the art, and will not be described in detail herein for the sake of economy.
The foregoing is merely a preferred embodiment of the present application and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present application and are intended to be comprehended within the scope of the present application.
Claims (10)
1. The bent pipe component of the pressure container comprises a cylinder body (200), wherein the side wall of the cylinder body (200) comprises a base layer (201) and a titanium coating layer (202) compounded on the inner wall surface of the base layer (201), and a connecting hole is formed in the side wall of the cylinder body (200);
the pipe bending component is characterized by comprising a connecting pipe (1), a titanium pipe (2) and a fixing part;
the connecting pipe (1) and the base layer (201) are made of steel, the top end of the connecting pipe (1) and the base layer (201) are welded and fixed along the circumferential direction of the connecting hole, and a connecting part is arranged at the bottom of the connecting pipe (1);
the titanium pipe (2) is provided with a bending structure (21), and the top end of the titanium pipe (2) penetrates through the connecting pipe (1) and the connecting hole and is welded with the titanium coating (202) in a sealing way along the circumferential direction;
the outer wall of the titanium pipe (2) is further fixedly provided with a titanium mounting piece outwards along the radial direction, and the titanium mounting piece is fixed with the connecting portion through the fixing portion.
2. The elbow member of a pressure vessel according to claim 1, wherein the connection portion is a connection flange (11), the fixing portion is a fixing flange (4), the fixing flange (4) is sleeved outside the titanium tube (2), the titanium mounting member is a titanium baffle plate (3) sandwiched between the connection flange (11) and the fixing flange (4), and the connection flange (11) and the fixing flange (4) are fixed by fasteners.
3. The elbow member of a pressure vessel according to claim 2, wherein the titanium tube (2) comprises a first section (22) located inside the adapter tube (1) and a second section (23) located outside the adapter tube (1), the second section (23) being provided with the bending structure (21), the first section (22) forming a titanium lining inside the adapter tube (1).
4. A pressure vessel elbow member according to claim 3, wherein the first section (22) and the second section (23) are of integrally formed construction.
5. A pressure vessel elbow member according to claim 3, wherein the first section (22) and the second section (23) are of a split structure, one side end surface of the titanium baffle (3) is fixed to an end of the first section (22) in a circumferential seal manner, and the other side end surface of the titanium baffle (3) is fixed to an end of the second section (23) in a circumferential seal manner.
6. The elbow member of a pressure vessel according to claim 5, wherein the titanium baffle (3) comprises a first ring plate (31) and a second ring plate (32), the first ring plate (31) being fixed in a circumferential seal with the end of the first section (22), the second ring plate (32) being fixed in a circumferential seal with the end of the second section (23), and an annular gasket (5) being further interposed between the first ring plate (31) and the second ring plate (32).
7. The elbow member of a pressure vessel according to claim 6, wherein the outer edge of the first ring plate (31) is welded to the connection flange (11) and/or the outer edge of the second ring plate (32) is welded to the fixation flange (4).
8. The elbow member of a pressure vessel according to any one of claims 2-7, wherein the fixing flange (4) and the connecting flange (11) are fixed by means of bolts (6), the ends of the bolts (6) being fixed by means of double nuts (7).
9. The elbow member of a pressure vessel according to any one of claims 1-7, further comprising a titanium cover plate (8) and a titanium backing plate (9), the titanium cover plate (8) and the titanium backing plate (9) each being of annular configuration, the titanium cladding (202) being provided with a hole configuration, the connection holes being located in a projection area of the hole configuration at a surface of the base layer (201);
the titanium backing plate (9) is sleeved outside the titanium pipe (2) and is located in the hole structure, the titanium cover plate (8) covers the upper surface of the titanium backing plate (9), the outer edge of the titanium cover plate (8) is welded with the surface of the titanium coating (202) in a circumferential sealing mode, and the inner edge of the titanium cover plate (8) is welded with the outer wall of the end portion of the titanium pipe (2) in a circumferential sealing mode.
10. A pressure vessel comprising a tube bending member according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311444148.XA CN117189869B (en) | 2023-11-02 | 2023-11-02 | Elbow pipe component of pressure vessel and pressure vessel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311444148.XA CN117189869B (en) | 2023-11-02 | 2023-11-02 | Elbow pipe component of pressure vessel and pressure vessel |
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| Publication Number | Publication Date |
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| CN117189869A CN117189869A (en) | 2023-12-08 |
| CN117189869B true CN117189869B (en) | 2024-02-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202311444148.XA Active CN117189869B (en) | 2023-11-02 | 2023-11-02 | Elbow pipe component of pressure vessel and pressure vessel |
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| CN (1) | CN117189869B (en) |
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|---|---|
| CN117189869A (en) | 2023-12-08 |
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