CN103557738A - Sealing structure of tubular heat exchanger tube box - Google Patents
Sealing structure of tubular heat exchanger tube box Download PDFInfo
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- CN103557738A CN103557738A CN201310525657.5A CN201310525657A CN103557738A CN 103557738 A CN103557738 A CN 103557738A CN 201310525657 A CN201310525657 A CN 201310525657A CN 103557738 A CN103557738 A CN 103557738A
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Abstract
The invention discloses a sealing structure of a tubular heat exchanger tube box. A seam allowance step is arranged inwards along the end surface of a tube box cylinder section and comprises a first step surface and a second step surface, wherein the second step surface is connected with the first step surface and is perpendicular to the central axis of the tube box cylinder section; a first sealing ring groove is formed between the first step surface of the seam allowance step and the peripheral side of a flat cushion edge ring; a second sealing ring groove is formed inwards in the second step surface of the seam allowance step; elastic metal sealing rings are arranged in the first sealing ring groove and the second sealing ring groove respectively. The two elastic metal sealing rings can simultaneously cooperate with the groove walls of the corresponding sealing ring grooves to generate micro expansion deformation so as to further perform clamping and sealing; by virtue of cooperative action, the phenomena of mutual interference influence and sealing force offset are avoided, and the sealing structure of the tubular heat exchanger tube box has a mutual compensation function and has the characteristics of simple structure, short manufacturing period, low cost and better sealing performance.
Description
Technical field
The application relates to the tubular heat exchanger technology in New Equipment Engineering, relate to a kind of tubular heat exchanger for the heat-exchange energy-saving device-specific of petroleum refining and chemical industry, Coal Chemical Industry, chemical fertilizer industry, air-conditioning, air cooling, electric power facility, be specially adapted under high temperature and high pressure condition the film hermetically-sealed construction of its bobbin carriage end.
Background technology
In prior art, tubular heat exchanger is a kind of heat exchanger being most widely used, the convection heat transfer' heat-transfer by convection that is widely used in " liquid---liquid " in the fields such as chemical industry, oil, medicine, food, light industry, metallurgy, coking, " vapour---vapour ", " vapour---liquid " heat exchange, and the heat exchange condensation flow process such as steam-condensation and liquid evaporation heat transfer.
The common structure of tubular heat exchanger of the prior art as shown in Figure 1, generally by main members such as tube bank 2, shell 3, bobbin carriages 4, formed, wherein, tube bank 2 is core components of tubular heat exchanger, tube bank 2 is comprised of heat exchanger tube 1, support plate (or deflection plate) and tube sheet conventionally, and heat exchanger tube 1 in a row is by support plate (or deflection plate) supporting, and its two ends are pierced in the pore of tube sheet, and be connected with tube sheet, thereby sealing and the intensity of assurance joint.By restrain 2 with the combination of the dividing plate of bobbin carriage 4, heat exchanger tube 1 can be divided into several flow processs so that medium flows back and forth in heat exchanger tube 1, thereby can extend heat exchange process, increase heat-exchange time, fully with pipe outside shell side media for heat exchange.Above-mentioned tube sheet and shell 3 and bobbin carriage 4 etc. by welding or the forced seal of flange bolt shimming fixedly assembling obtain a tubular heat exchanger.
Heat exchange medium in heat exchanger tube 1 pipe is cold medium, during flue gas that the heat exchange medium outside pipe is forced convertion, forms heating furnace mode; Heat exchange medium in heat exchanger tube 1 pipe is thermal medium, during air that the heat exchange medium outside pipe is forced convertion, forms cooler mode; Heating furnace mode and cooler mode are a kind of heat exchange method of heat exchanger.The manufacturing process of this tubular heat exchanger is comparatively ripe, and security performance is also higher, is energy consumption equipment crucial in heat transmission equipment.
Above-mentioned tubular heat exchanger of the prior art, for fear of the leakage of flow process material, very little even if it import and export to take over bore, be usually designed to the mode with the direct butt welding of pipeline, and the mode that does not adopt flange to connect; Equally, leakage for fear of flow process material, the shell of bigbore tube sheet and its both sides and bobbin carriage cylinder weld, make like this, the end of bobbin carriage just can not and end cap between also adopt the mode of welding, mainly consider and facilitate maintainer can enter to carry out from the end of bobbin carriage the first-class repair work of detector tube.
Thereupon, people are devoted to the research of the better hermetically-sealed construction except non-disconnectable intensity is welded to connect between the end of bobbin carriage and the end cap of bobbin carriage always.Yet, in these researchs, there is following problem:
The first, complex structure.The sealing of thread-locking ring heat exchanger bobbin carriage, the pressure strip that wherein adopted, sealing plate and bolt are all consumable accessorys; When leaking appears in sealing, need to manually bolt on and regulate compensation, the operation of band pressure zone temperature, makes troublesome poeration dangerous again.
The second, need high-caliber welding.As the seal weld of thin-walled Ω ring structure, during site examining and repairing, probably to again change Ω half ring element full position seals weldering.If bobbin carriage end adopts the sealing of sphere film, site examining and repairing not only needs to remove sealing, also needs again full position seals weldering after re-assemblying, and welder's qualification and procedure qualification need meet the requirement of national legislation standard.
The 3rd, huge structure.As common large flange-type sealing, flange and end cap are very thick, and not temperature compensated adjusting.
The 4th, structure often ftractures, dangerous, difficult in maintenance.
To sum up, the complicated or huge heat exchanger structure manufacturing cycle is long, producing cost is high, assembly and disassembly trouble, inconvenient maintenance.During particularly installing overhaul, can shorten a repair time can produce significant economic benefit.Enhancing along with environmental protection consciousness; the lifting of oil quality need to be taked the hydrogenation technique under HTHP more; the molecule of hydrogen is minimum, be the inflammable and explosive medium that permeability is very strong; original hermetically-sealed construction is difficult to adapt to new process and management requirement; as can be seen here; the problem that the novel multitubular heat exchanger bobbin carriage end sealing in conjunction with sphere film exists is improved; research and develop a kind of simple in structure, sealing reliability good, the efficiency of loading and unloading is high tube case end part sealing structure, in field of engineering technology, there is very far-reaching and great meaning.
Summary of the invention
The application's object is to avoid weak point of the prior art and a kind of assembling quality that can improve bobbin carriage is provided, simple in structure, good seal performance, and the while can also be reduced the hermetically-sealed construction of the tube header of tube-type heat exchanger of whole manufacturing cost.
The application's object is achieved through the following technical solutions:
A kind of hermetically-sealed construction of tube header of tube-type heat exchanger is provided, include bobbin carriage shell ring, bobbin carriage end cap, be arranged at the end of described bobbin carriage shell ring and the sphere film seal disc between described bobbin carriage end cap, the plain cushion side ring that described sphere film seal disc includes sphere diaphragm in the middle of being arranged at and arranges along the outer circumferential side of described sphere diaphragm, the end of described bobbin carriage shell ring is fixedly connected with by stud nut with described bobbin carriage end cap, described plain cushion side ring is under the effect of described stud nut, one end is clamped in the end of described bobbin carriage shell ring, its other end is clamped in described bobbin carriage end cap, wherein, described bobbin carriage shell ring is inwardly provided with seam step along the end face of described bobbin carriage shell ring, described seam step comprises First terrace and the second step face being connected with described First terrace, described second step face is perpendicular to the central axis of described bobbin carriage shell ring, between the First terrace of described seam step and the outer circumferential side of described plain cushion side ring, form the first closure gasket groove, the second step of described seam step is towards interior second closure gasket groove that is provided with, the notch of described the second closure gasket groove is clamped in the inner face of described plain cushion side ring, in described the first closure gasket groove and described the second closure gasket groove, be provided with and there is flexible metallic packing ring.
Wherein, the cross sectional shape of described the second closure gasket groove is that bottom land is flat rectangle.
Wherein, the cross sectional shape of described the second closure gasket groove is that bottom land is the right-angled trapezium of wedged bottom.
Wherein, the cross sectional shape of described the second closure gasket groove is that bottom land is the square of arc or the combination arc structure of the cross sectional shape of described the second closure gasket groove for being comprised of arc.
Wherein, the notch that the cross section that described the first closure gasket groove is arranged to consist of the First terrace of described seam step and the outer circumferential side of described plain cushion side ring is trapezoidal the first closure gasket groove and trapezoidal side along the bottom land of described the first closure gasket groove to described the first closure gasket groove shrinks.
Wherein, described in, having flexible metallic packing ring is that cross section is the soft metal structure of O shape.
Wherein, described cross section is that the soft metal structure of O shape is that inside is with the solid rubber structure of winding steel wire or the inner hollow rubber structure with winding steel wire.
Wherein, described in, having flexible metallic packing ring is that cross section is the soft metal structure of C shape.
Wherein, the space having described between flexible metallic packing ring and described the first closure gasket groove and described the second closure gasket groove is all filled with heat-insulating powder.
Wherein, described the second closure gasket groove is arranged at the middle part of the second step face of described seam step and the inner face contact plane of described plain cushion side ring.
The application's beneficial effect:
The hermetically-sealed construction of a kind of tube header of tube-type heat exchanger of the application, at bobbin carriage shell ring, along the end face of bobbin carriage shell ring, be inwardly provided with seam step, seam step comprises First terrace and the second step face being connected with First terrace, second step face is perpendicular to the central axis of bobbin carriage shell ring, between the First terrace of seam step and the outer circumferential side of plain cushion side ring, form the first closure gasket groove, the second step of seam step is towards interior second closure gasket groove that is provided with, the notch of the second closure gasket groove is clamped in the inner face of plain cushion side ring, in the first closure gasket groove and the second closure gasket groove, be provided with and there is flexible metallic packing ring.
Compared with prior art, the application adopts to be had flexible metallic packing ring and matches with closure gasket groove and carry out dual-seal, two cell wall actings in conjunction with the closure gasket groove that flexible metallic packing ring can be simultaneously corresponding with it are out of shape and are further clamped sealing to produce micro-swelling, mutually act synergistically between the two, there is not the offseting phenomenon of mutual interference effect and sealing force, the function with mutual compensation, have simultaneously simple in structure, the manufacturing cycle is short, cost is low, and the better feature of sealing property; Moreover there is flexible metallic packing ring and compare with gum ring conventional in prior art, there is first the effect of high-temperature resistant medium, be conducive to guard against fluid high temperature corrosion, avoid aging fatigue cracking under gum ring high temperature, improve sealing property; Second can be under the effect of interior pressure, the cell wall acting in conjunction of closure gasket groove corresponding thereto, makes it in the direction that may leak perpendicular to medium, produce micro-swelling distortion and makes it tighter with the cell wall subsides of closure gasket groove better, has better self-tightening effect.Be specially adapted under high temperature and high pressure condition the sealing of the bobbin carriage of a kind of tubular heat exchanger of the heat-exchange energy-saving device-specific of petroleum refining and chemical industry, Coal Chemical Industry, chemical fertilizer industry, air-conditioning, air cooling, electric power facility.
Accompanying drawing explanation
Utilize accompanying drawing to be described further the application, but embodiment in accompanying drawing does not form any restriction to the application, for those of ordinary skill in the art, is not paying under the prerequisite of creative work, can also obtain according to the following drawings other accompanying drawing.
Fig. 1 is the structural representation of a kind of tubular heat exchanger of the prior art.
Fig. 2 is the partial structurtes schematic diagram of embodiment 1 of hermetically-sealed construction of a kind of tube header of tube-type heat exchanger of the application.
Fig. 3 is the partial structurtes schematic diagram of embodiment 2 of hermetically-sealed construction of a kind of tube header of tube-type heat exchanger of the application.
Fig. 4 is the partial schematic diagram of the first structure of embodiment 3 of hermetically-sealed construction of a kind of tube header of tube-type heat exchanger of the application.
Fig. 5 is the partial schematic diagram of the second structure of embodiment 3 of hermetically-sealed construction of a kind of tube header of tube-type heat exchanger of the application.
Fig. 6 is the partial schematic diagram of the third structure of embodiment 3 of hermetically-sealed construction of a kind of tube header of tube-type heat exchanger of the application.
Fig. 7 is the partial structurtes schematic diagram of embodiment 4 of hermetically-sealed construction of a kind of tube header of tube-type heat exchanger of the application.
Fig. 8 is the partial structurtes schematic diagram of embodiment 5 of hermetically-sealed construction of a kind of tube header of tube-type heat exchanger of the application.
In Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7 and Fig. 8, include:
1---heat exchanger tube, 2---tube bank, 3---shell, 4---bobbin carriage,
5---bobbin carriage shell ring,
6---bobbin carriage end cap, 61---seam step,
71---sphere diaphragm, 72---plain cushion side ring,
8---stud nut,
9---the first closure gasket groove,
10---the second closure gasket groove,
11---there is flexible metallic packing ring.
The specific embodiment
With the following Examples the application is described in further detail.
embodiment 1
One of specific embodiment of the hermetically-sealed construction of a kind of tube header of tube-type heat exchanger of the application, shown in figure 2, include bobbin carriage shell ring 5, bobbin carriage end cap 6, be arranged at the end of described bobbin carriage shell ring 5 and the sphere film seal disc between described bobbin carriage end cap 6, the plain cushion side ring 72 that described sphere film seal disc includes sphere diaphragm 71 in the middle of being arranged at and arranges along the outer circumferential side of described sphere diaphragm 71, the end of described bobbin carriage shell ring 5 is fixedly connected with by stud nut 8 with described bobbin carriage end cap 6, described plain cushion side ring 72 is under the effect of described stud nut 8, one end is clamped in the end of described bobbin carriage shell ring 5, its other end is clamped in described bobbin carriage end cap 6, above-mentioned technical characterictic is identical with the conventional seals structure of tube header of tube-type heat exchanger of the prior art.
The application's improvements are, described bobbin carriage shell ring 5 is inwardly provided with seam step 61 along the end face of described bobbin carriage shell ring 5, described seam step 61 comprises First terrace and the second step face being connected with described First terrace, described second step face is perpendicular to the central axis of described bobbin carriage shell ring 5, between the First terrace of described seam step 61 and the outer circumferential side of described plain cushion side ring 72, form the first closure gasket groove 9, the second step of described seam step 61 is towards interior second closure gasket groove 10 that is provided with, the notch of described the second closure gasket groove 10 is clamped in the inner face of described plain cushion side ring 72, in described the first closure gasket groove 9 and described the second closure gasket groove 10, be provided with and there is flexible metallic packing ring 11.
The application adopts to be had flexible metallic packing ring 11 and matches with closure gasket groove and carry out dual-seal, two cell wall actings in conjunction with the closure gasket groove that flexible metallic packing ring 11 can be simultaneously corresponding with it are out of shape and are further clamped sealing to produce micro-swelling, mutually act synergistically between the two, there is not the offseting phenomenon of mutual interference effect and sealing force, the function with mutual compensation, have simultaneously simple in structure, the manufacturing cycle is short, cost is low, and the better feature of sealing property; Moreover there is flexible metallic packing ring 11 and compare with gum ring conventional in prior art, there is first the effect of high-temperature resistant medium, be conducive to guard against fluid high temperature corrosion, avoid aging fatigue cracking under gum ring high temperature, improve sealing property; Second can be under the effect of interior pressure, the cell wall acting in conjunction of closure gasket groove corresponding thereto, makes it in the direction that may leak perpendicular to medium, produce micro-swelling distortion and makes it tighter with the cell wall subsides of closure gasket groove better, has better self-tightening effect.
The plain cushion side ring 72 of this sphere film seal disc, before seal weld, can be filled with clean water from bobbin carriage import and also boost gradually to check the sealing of metallic packing ring.
Concrete, the cross sectional shape of described the second closure gasket groove 10 is that bottom land is flat rectangle.Bobbin carriage end cap 6 compresses metallic packing ring, the pretightning force sealing by plain cushion side ring 72 under the positive action of stud nut 8.The cross section of the second above-mentioned mentioned closure gasket groove 10 is cross sectional shape that tangent plane was cut for take the plane at axis place of the second closure gasket groove 10.
Concrete, described in to have flexible metallic packing ring 11 be that cross section is the soft metal structure of O shape.This has flexible metallic packing ring 11 and has first elasticity, the characteristic second with metal, make it not only there is good sealing property, but also there is the effect of high-temperature resistant medium, be conducive to guard against fluid high temperature corrosion, avoid aging fatigue cracking under gum ring high temperature, extended its service life, be specially adapted under high temperature and high pressure condition the sealing of the bobbin carriage of a kind of tubular heat exchanger of the heat-exchange energy-saving device-specific of petroleum refining and chemical industry, Coal Chemical Industry, chemical fertilizer industry, air-conditioning, air cooling, electric power facility.
Concrete, described cross section is that the soft metal structure of O shape is that inside is with the solid rubber structure of winding steel wire or the inner hollow rubber structure with winding steel wire.The soft metal structure of this O shape or can also be the structures such as the ellipse of approximate O shape or olive shape, is outsidely comprised of rubber bag tank, and the inside of rubber bag tank can be filled by new block rubber by the reality with winding steel wire; Can also only by winding steel wire, fill, specifically winding steel wire be coiled into spherical structure or directly by irregular, be wound around.
Concrete, described in the space that has between flexible metallic packing ring 11 and described the first closure gasket groove 9 and described the second closure gasket groove 10 be all filled with heat-insulating powder.Play heat-blocking action, avoid high temperature for the impact with flexible metallic packing ring 11.
The global shape of the first closure gasket groove 9 and the second closure gasket groove 10 can be O shape structure, or other applicable shape.
Two of the specific embodiment of the hermetically-sealed construction of a kind of tube header of tube-type heat exchanger of the application, as shown in Figure 3, the main technical schemes of the present embodiment is identical with embodiment 1, in the present embodiment unaccounted feature, adopt the explanation in embodiment 1, at this, no longer repeat.The difference of the present embodiment and embodiment 1 is, the cross sectional shape of described the second closure gasket groove 10 is that bottom land is the right-angled trapezium of wedged bottom.In the second closure gasket groove 10, the cell wall degree of depth of contiguous stud nut 8 one sides is shallower than the cell wall degree of depth of the sphere diaphragm 71 of contiguous sphere film seal disc, the bottom land width that forms like this second closure gasket groove 10 is greater than the width of rebate of the end face that is positioned at bobbin carriage shell ring 5, make when interior pressure is when being arranged at having a flexible metallic packing ring 11 (being notch direction) forces laterally in the second closure gasket groove 10, along with the spacing between 10 two cell walls of the second closure gasket groove reduces gradually, the tension force having between flexible metallic packing ring 11 and two cell wall is just larger, make to have flexible metallic packing ring 11 tightly be closely attached on the object that cell wall is realized tightening seal.
Three of the specific embodiment of the hermetically-sealed construction of a kind of tube header of tube-type heat exchanger of the application, the main technical schemes of the present embodiment is identical with embodiment 1, and unaccounted feature, adopts the explanation in embodiment 1 in the present embodiment, at this, no longer repeats.The difference of the present embodiment and embodiment 1 is, as shown in Figure 4, the cross sectional shape of described the second closure gasket groove 10 is that bottom land is the square of arc, or;
The combination arc structure of the cross sectional shape of described the second closure gasket groove 10 for being comprised of arc, specifically comprises:
The symmetrical arc being formed by two identical arc docking as shown in Figure 5, and as shown in Figure 6, the asymmetrical arc being formed by two different arc docking.When having flexible metallic packing ring 11, be subject under the effect of interior pressure, the acting in conjunction power of the both direction by the second closure gasket groove 10, makes to have flexible metallic packing ring 11 and is out of shape along cell wall swelling.
Wherein, cross sectional shape is that bottom land is the second closure gasket groove 10 of the square of arc, when thering is flexible metallic packing ring 11, be subject under the effect of interior pressure, the inclined-plane, right angle of the second closure gasket groove 10 has flexible metallic packing ring 11 to this and applies certain active force, make it along narrower slot space swelling distortion, make it there is good sealing property.
embodiment 4
Four of the specific embodiment of the hermetically-sealed construction of a kind of tube header of tube-type heat exchanger of the application, as shown in Figure 7, the main technical schemes of the present embodiment is identical with embodiment 1, in the present embodiment unaccounted feature, adopt the explanation in embodiment 1, at this, no longer repeat.The difference of the present embodiment and embodiment 1 is, the notch that the cross section that described the first closure gasket groove 9 is arranged to consist of the First terrace of described seam step 61 and the outer circumferential side of described plain cushion side ring 72 is trapezoidal the first closure gasket groove 9 and trapezoidal side along the bottom land of described the first closure gasket groove 9 to described the first closure gasket groove 9 shrinks.
Wherein, cross section is the first trapezoidal closure gasket groove 9, the width of bottom land is greater than the width of notch, can be isosceles trapezoid or isosceles trapezoidal structure not, when interior pressure is when having flexible metallic packing ring 11 and force to notch position, make it along narrower slot space swelling distortion, make its cell wall that is more adjacent to the first closure gasket groove 9, there is good sealing property.
Five of the specific embodiment of the hermetically-sealed construction of a kind of tube header of tube-type heat exchanger of the application, as shown in Figure 8, the main technical schemes of the present embodiment is identical with embodiment 1, in the present embodiment unaccounted feature, adopt the explanation in embodiment 1, at this, no longer repeat.The difference of the present embodiment and embodiment 1 is, described in to have flexible metallic packing ring 11 be that cross section is the soft metal structure of C shape.The similar catapult of soft metal structure of C shape, under the effect of interior pressure, swelling can be opened to both sides in its two ends.
Six of the specific embodiment of the hermetically-sealed construction of a kind of tube header of tube-type heat exchanger of the application, the main technical schemes of the present embodiment is identical with embodiment 1, and unaccounted feature, adopts the explanation in embodiment 1 in the present embodiment, at this, no longer repeats.The difference of the present embodiment and embodiment 1 is, described the second closure gasket groove 10 is arranged at the middle part of the second step face of described seam step 61 and the inner face contact plane of described plain cushion side ring 72.More be conducive to the clamping sealing between plain cushion side ring 72 and the second step face of bobbin carriage shell ring 5, be also more conducive to the mutually collaborative swelling effect between the second closure gasket groove 10 and the first closure gasket groove 9 simultaneously.
The heat exchange that the application specifically can be applicable to petroleum refining and chemical industry, Coal Chemical Industry, chemical fertilizer, air-conditioning, air cooling, electric power facility equipment etc. requires, comprise to dielectric heating or the application mode such as cooling, be particularly suitable for the operating mode that HTHP faces hydrogen load fluctuation, be also suitable for the bearing device manhole of similar operating mode.
Finally should be noted that; above embodiment is only in order to illustrate the application's technical scheme; but not restriction to the application's protection domain; although the application has been done to explain with reference to preferred embodiment; those of ordinary skill in the art is to be understood that; can modify or be equal to replacement the application's technical scheme, and not depart from essence and the scope of present techniques scheme.
Claims (10)
1. the hermetically-sealed construction of a tube header of tube-type heat exchanger, include bobbin carriage shell ring, bobbin carriage end cap, be arranged at the end of described bobbin carriage shell ring and the sphere film seal disc between described bobbin carriage end cap, the plain cushion side ring that described sphere film seal disc includes sphere diaphragm in the middle of being arranged at and arranges along the outer circumferential side of described sphere diaphragm, the end of described bobbin carriage shell ring is fixedly connected with by stud nut with described bobbin carriage end cap, described plain cushion side ring is under the effect of described stud nut, one end is clamped in the end of described bobbin carriage shell ring, its other end is clamped in described bobbin carriage end cap, it is characterized in that: described bobbin carriage shell ring is inwardly provided with seam step along the end face of described bobbin carriage shell ring, described seam step comprises First terrace and the second step face being connected with described First terrace, described second step face is perpendicular to the central axis of described bobbin carriage shell ring, between the First terrace of described seam step and the outer circumferential side of described plain cushion side ring, form the first closure gasket groove, the second step of described seam step is towards interior second closure gasket groove that is provided with, the notch of described the second closure gasket groove is clamped in the inner face of described plain cushion side ring, in described the first closure gasket groove and described the second closure gasket groove, be provided with and there is flexible metallic packing ring.
2. the hermetically-sealed construction of a kind of tube header of tube-type heat exchanger according to claim 1, is characterized in that: the cross sectional shape of described the second closure gasket groove is that bottom land is flat rectangle.
3. the hermetically-sealed construction of a kind of tube header of tube-type heat exchanger according to claim 1, is characterized in that: the cross sectional shape of described the second closure gasket groove is that bottom land is the right-angled trapezium of wedged bottom.
4. the hermetically-sealed construction of a kind of tube header of tube-type heat exchanger according to claim 1, is characterized in that: the cross sectional shape of described the second closure gasket groove is that bottom land is the square of arc or the combination arc structure of the cross sectional shape of described the second closure gasket groove for being comprised of arc.
5. the hermetically-sealed construction of a kind of tube header of tube-type heat exchanger according to claim 1, is characterized in that: the notch that the cross section that described the first closure gasket groove is arranged to consist of the First terrace of described seam step and the outer circumferential side of described plain cushion side ring is trapezoidal the first closure gasket groove and trapezoidal side along the bottom land of described the first closure gasket groove to described the first closure gasket groove shrinks.
6. the hermetically-sealed construction of a kind of tube header of tube-type heat exchanger according to claim 1, is characterized in that: described in to have flexible metallic packing ring be that cross section is the soft metal structure of O shape.
7. the hermetically-sealed construction of a kind of tube header of tube-type heat exchanger according to claim 6, is characterized in that: described cross section is that the soft metal structure of O shape is that inside is with the solid rubber structure of winding steel wire or the inner hollow rubber structure with winding steel wire.
8. the hermetically-sealed construction of a kind of tube header of tube-type heat exchanger according to claim 1, is characterized in that: described in to have flexible metallic packing ring be that cross section is the soft metal structure of C shape.
9. the hermetically-sealed construction of a kind of tube header of tube-type heat exchanger according to claim 1, is characterized in that: described in the space that has between flexible metallic packing ring and described the first closure gasket groove and described the second closure gasket groove be all filled with heat-insulating powder.
10. the hermetically-sealed construction of a kind of tube header of tube-type heat exchanger according to claim 1, is characterized in that: described the second closure gasket groove is arranged at the middle part of the second step face of described seam step and the inner face contact plane of described plain cushion side ring.
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| CN104776749A (en) * | 2015-03-30 | 2015-07-15 | 茂名重力石化机械制造有限公司 | Tube box seal structure for tube type heat exchangers |
| CN107606938A (en) * | 2017-10-20 | 2018-01-19 | 苏州中材非金属矿工业设计研究院有限公司 | A kind of vacuum rotary calciner |
| CN108266926A (en) * | 2018-02-05 | 2018-07-10 | 江阴市双友空调机械有限公司 | A kind of condenser intake chamber end socket |
| CN108317778A (en) * | 2018-02-05 | 2018-07-24 | 江阴市双友空调机械有限公司 | A kind of Novel condenser intake chamber end socket sealing structure |
| US10082337B2 (en) | 2015-11-16 | 2018-09-25 | Alfa Laval Corporate Ab | Shell-and-tube heat exchanger with seal for isolating shell from tube fluid |
| CN110226025A (en) * | 2017-02-07 | 2019-09-10 | 卡特彼勒公司 | High-temperature resistant tube for air-air aftercooler is to collector mechanical splice |
| CN115430647A (en) * | 2022-09-26 | 2022-12-06 | 北京半导体专用设备研究所（中国电子科技集团公司第四十五研究所） | Drum mechanism and spin dryer |
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Address after: 525024 Guangdong City, Maoming Province Ring West Road, No. 91 Patentee after: Maoming gravity Petrochemical Equipment Co Ltd Address before: 525024 Maoming City, Guangdong Province West Road, Maoming City, the gravity of the Petrochemical Machinery Manufacturing Co., Ltd., Patentee before: The Challenge Petrochemical Machinery Corporation |