CN103557738B - A kind of hermetically-sealed construction of tube header of tube-type heat exchanger - Google Patents
A kind of hermetically-sealed construction of tube header of tube-type heat exchanger Download PDFInfo
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- CN103557738B CN103557738B CN201310525657.5A CN201310525657A CN103557738B CN 103557738 B CN103557738 B CN 103557738B CN 201310525657 A CN201310525657 A CN 201310525657A CN 103557738 B CN103557738 B CN 103557738B
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Abstract
A kind of hermetically-sealed construction of tube header of tube-type heat exchanger, wherein, tube header section is inwardly provided with seam step along the end face of tube header section, the second step face that seam step comprises First terrace and is connected with First terrace, second step face is perpendicular to the central axis of tube header section, the first closure gasket groove is formed between the First terrace of seam step and the outer circumferential side of plain cushion side ring, the second step of seam step is provided with the second closure gasket groove towards interior, is provided with and has flexible metallic packing ring in the first closure gasket groove and the second closure gasket groove.The cell wall acting in conjunction of adopt two to have closure gasket groove that flexible metallic packing ring can be simultaneously corresponding with it carrys out further pinch seal to produce micro-swelling distortion, mutually act synergistically between the two, there is not the offseting phenomenon of mutual interference effect and sealing force, there is the function compensated mutually, have that structure is simple, the manufacturing cycle is short, cost is low simultaneously, and the better feature of sealing property.
Description
Technical field
The application relates to the tubular heat exchanger technology in New Equipment Engineering, relate to a kind of tubular heat exchanger of the heat-exchange energy-saving device-specific for petroleum refining and chemical industry, Coal Chemical Industry, chemical fertilizer industry, air-conditioning, air cooling, electric power facility, under being specially adapted to 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 be most widely used, be widely used in the convection heat transfer' heat-transfer by convection of " 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 be made up of main members such as tube bank 2, shell 3, bobbin carriages 4, wherein, tube bank 2 is core components of tubular heat exchanger, tube bank 2 is made up of heat exchanger tube 1, support plate (or deflection plate) and tube sheet usually, 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, thus ensure sealing and the intensity of joint.By restraining the combination of the dividing plate of 2 and bobbin carriage 4, heat exchanger tube 1 can be divided into several flow process, so that medium flows back and forth in heat exchanger tube 1, thus can heat exchange process be extended, increase heat-exchange time, fully with the shell side media for heat exchange outside pipe.Above-mentioned tube sheet and shell 3 and bobbin carriage 4 etc. are by weld or the forced seal of flange bolt shimming is fixed assembling and namely obtained a tubular heat exchanger.
When the heat exchange medium in heat exchanger tube 1 pipe is cold medium, when the heat exchange medium outside pipe is the flue gas of forced convertion, then form heating furnace mode; When the heat exchange medium in heat exchanger tube 1 pipe is thermal medium, when the heat exchange medium outside pipe is the air of forced convertion, then form 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, in order to avoid the leakage of flow process material, even if it imports and exports adapter, bore is very little, is usually designed to the mode of the direct butt welding with pipeline, and does not adopt the mode of Flange joint; Equally, in order to avoid the leakage of flow process material, shell and the bobbin carriage cylinder of bigbore tube sheet and its both sides weld, make like this, the end of bobbin carriage just can not with also adopt the mode of welding between end cap, mainly consider and facilitate maintainer can enter to carry out the first-class repair work of detector tube from the end of bobbin carriage.
Thereupon, people are devoted to the research of the better hermetically-sealed construction between the end of bobbin carriage and the end cap of bobbin carriage except non-disconnectable strength solder joints is connected always.But, in these researchs, there is following problem:
The first, complex structure.Thread-locking ring heat exchanger bobbin carriage seals, and wherein adopted pressure strip, sealing plate and bolt are all consumable accessorys; When sealing appearance and leaking, need manually to bolt on and carry out adjustment 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 and all positon seal weld.If bobbin carriage end adopts the sealing of sphere film, site examining and repairing not only needs to remove sealing, and also need all positon seal weld again after re-assemblying, welder's qualification and procedure qualification need meet the requirement of national legislation standard.
3rd, huge structure.As common large flange type sealing, flange and end cap are very thick, and not temperature compensated adjustment.
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, and assembly and disassembly bothers, inconvenient maintenance.Particularly between device overhaul time, can shorten a repair time can produce significant economic benefit.Along with the enhancing of environmental protection consciousness; the lifting of oil quality needs to take the hydrogenation technique under high pressure at higher temperature; 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; novel multitubular heat exchanger bobbin carriage end Problems existing in conjunction with the sealing of sphere film improves; research and develop the tube case end part sealing structure that a kind of structure is simple, sealing reliability good, the efficiency of loading and unloading is high, in field of engineering technology, there is very far-reaching and great meaning.
Summary of the invention
The object of the application is avoid weak point of the prior art and provide a kind of assembling quality that can improve bobbin carriage, and structure is simple, good seal performance, can also reduce the hermetically-sealed construction of the tube header of tube-type heat exchanger of overall manufacturing cost simultaneously.
The object of the application is achieved through the following technical solutions:
Provide a kind of hermetically-sealed construction of tube header of tube-type heat exchanger, include tube header section, bobbin carriage end cap, be arranged at the sphere film seal disc between the end of described tube header section and described bobbin carriage end cap, described sphere film seal disc includes the plain cushion side ring being arranged at middle sphere diaphragm and arranging along the outer circumferential side of described sphere diaphragm, the end of described tube header section 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 tube header section, its other end is clamped in described bobbin carriage end cap, wherein, described tube header section is inwardly provided with seam step along the end face of described tube header section, the second step face that described seam step comprises First terrace and is connected with described First terrace, described second step face is perpendicular to the central axis of described tube header section, the first closure gasket groove is formed between the First terrace of described seam step and the outer circumferential side of described plain cushion side ring, the second step of described seam step is provided with the second closure gasket groove towards interior, the notch of described second closure gasket groove is clamped in the inner face of described plain cushion side ring, be provided with in described first closure gasket groove and described second closure gasket groove and there is flexible metallic packing ring.
Wherein, the cross sectional shape of described second closure gasket groove is bottom land is flat rectangle.
Wherein, the right-angled trapezium of the cross sectional shape of described second closure gasket groove to be bottom land be wedged bottom.
Wherein, the cross sectional shape of described second closure gasket groove is bottom land be the square of arc or the cross sectional shape of described second closure gasket groove is the combination arc structure be made up of arc.
Wherein, the cross section that described first closure gasket groove is arranged to be made up of the outer circumferential side of the First terrace of described seam step and described plain cushion side ring is the first trapezoidal closure gasket groove and trapezoidal side shrinks along the bottom land of described first closure gasket groove to the notch of described first closure gasket groove.
Wherein, to have flexible metallic packing ring described in be cross section is the soft metal structure of O shape.
Wherein, described cross section is the soft metal structure of O shape is the solid rubber structure of inner band winding steel wire or the hollow rubber structure of inner band winding steel wire.
Wherein, to have flexible metallic packing ring described in be cross section is the soft metal structure of C shape.
Wherein, there is described in flexible metallic packing ring and the space between described first closure gasket groove and described second closure gasket groove is all filled with heat-insulating powder.
Wherein, described 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 beneficial effect of the application:
The hermetically-sealed construction of a kind of tube header of tube-type heat exchanger of the application, seam step is inwardly provided with along the end face of tube header section in tube header section, the second step face that seam step comprises First terrace and is connected with First terrace, second step face is perpendicular to the central axis of tube header section, the first closure gasket groove is formed between the First terrace of seam step and the outer circumferential side of plain cushion side ring, the second step of seam step is provided with the second closure gasket groove towards interior, the notch of the second closure gasket groove is clamped in the inner face of plain cushion side ring, be provided with in first closure gasket groove and the second closure gasket groove 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 carry out further pinch seal to produce micro-swelling distortion, mutually act synergistically between the two, there is not the offseting phenomenon of mutual interference effect and sealing force, there is the function compensated mutually, have that structure is simple, the manufacturing cycle is short, cost is low simultaneously, and the better feature of sealing property; Moreover there is flexible metallic packing ring compared with gum ring conventional in prior art, there is the effect of high-temperature resistant medium first, be conducive to the high temperature corrosion of defence fluid, avoid aging fatigue cracking under gum ring high temperature, improve sealing property; Second can under the effect of interior pressure, the cell wall acting in conjunction of closure gasket groove corresponding thereto, makes it on direction of may leaking perpendicular to medium, produce micro-swelling distortion and makes it paste tightlier with the cell wall of closure gasket groove, have better self-tightening effect better.Under being specially adapted to 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 the embodiment in accompanying drawing does not form any restriction to the application, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the following drawings.
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 the embodiment 1 of the 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 the embodiment 2 of the 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 the embodiment 3 of the 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 the embodiment 3 of the 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 the embodiment 3 of the 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 the embodiment 4 of the 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 the embodiment 5 of the hermetically-sealed construction of a kind of tube header of tube-type heat exchanger of the application.
Include in Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7 and Fig. 8:
1---heat exchanger tube, 2---tube bank, 3---shell, 4---bobbin carriage,
5---tube header section,
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.
Detailed description of the invention
With the following Examples the application is described in further detail.
embodiment 1
One of detailed description of the invention of the hermetically-sealed construction of a kind of tube header of tube-type heat exchanger of the application, shown in figure 2, include tube header section 5, bobbin carriage end cap 6, be arranged at the sphere film seal disc between the end of described tube header section 5 and described bobbin carriage end cap 6, described sphere film seal disc includes the plain cushion side ring 72 being arranged at middle sphere diaphragm 71 and arranging along the outer circumferential side of described sphere diaphragm 71, the end of described tube header section 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 tube header section 5, its other end is clamped in described bobbin carriage end cap 6, above-mentioned technical characteristic is identical with the conventional seals structure of tube header of tube-type heat exchanger of the prior art.
The improvements of the application are, described tube header section 5 is inwardly provided with seam step 61 along the end face of described tube header section 5, the second step face that described seam step 61 comprises First terrace and is connected with described First terrace, described second step face is perpendicular to the central axis of described tube header section 5, the first closure gasket groove 9 is formed between the First terrace of described seam step 61 and the outer circumferential side of described plain cushion side ring 72, the second step of described seam step 61 is provided with the second closure gasket groove 10 towards interior, the notch of described second closure gasket groove 10 is clamped in the inner face of described plain cushion side ring 72, be provided with in described first closure gasket groove 9 and described second closure gasket groove 10 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 carry out further pinch seal to produce micro-swelling distortion, mutually act synergistically between the two, there is not the offseting phenomenon of mutual interference effect and sealing force, there is the function compensated mutually, have that structure is simple, the manufacturing cycle is short, cost is low simultaneously, and the better feature of sealing property; Moreover there is flexible metallic packing ring 11 compared with gum ring conventional in prior art, there is the effect of high-temperature resistant medium first, be conducive to the high temperature corrosion of defence fluid, avoid aging fatigue cracking under gum ring high temperature, improve sealing property; Second can under the effect of interior pressure, the cell wall acting in conjunction of closure gasket groove corresponding thereto, makes it on direction of may leaking perpendicular to medium, produce micro-swelling distortion and makes it paste tightlier with the cell wall of closure gasket groove, have better self-tightening effect better.
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 boost to check the sealing of metallic packing ring gradually.
Concrete, the cross sectional shape of described second closure gasket groove 10 is bottom land is flat rectangle.Bobbin carriage end cap 6 compresses metallic packing ring by plain cushion side ring 72 under the positive action of stud nut 8, gives the pretightning force sealed.The cross sectional shape of cross section for cutting for tangent plane with the plane at the axis place of the second closure gasket groove 10 of the second above-mentioned mentioned closure gasket groove 10.
Concrete, described in have flexible metallic packing ring 11 are cross sections is the soft metal structure of O shape.This has flexible metallic packing ring 11 and has elasticity first, second there is the characteristic of metal, it is made not only to have good sealing property, but also there is the effect of high-temperature resistant medium, be conducive to the high temperature corrosion of defence fluid, avoid aging fatigue cracking under gum ring high temperature, extend its service life, under being specially adapted to 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 the soft metal structure of O shape is the solid rubber structure of inner band winding steel wire or the hollow rubber structure of inner band winding steel wire.The soft metal structure of this O shape or can also be the structure such as the ellipse of approximate O shape or olive shape, is outsidely made up of rubber bag tank, and the inside of rubber bag tank can be filled with the real new block rubber of band winding steel wire; Only can also fill by winding steel wire, specifically winding steel wire be coiled into spherical structure or be directly wound around by irregular.
Concrete, described in there is flexible metallic packing ring 11 and the space between described first closure gasket groove 9 and described second closure gasket groove 10 is 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 shape be applicable to.
embodiment 2
The detailed description of the invention two 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, no longer repeat at this.The difference of the present embodiment and embodiment 1 is, the right-angled trapezium of the cross sectional shape of described second closure gasket groove 10 to be bottom land be wedged bottom.In the second closure gasket groove 10, the cell wall degree of depth of contiguous stud nut 8 side is shallower than the cell wall degree of depth of the sphere diaphragm 71 of contiguous sphere film seal disc, the slot bottom width of such formation second closure gasket groove 10 is greater than the width of rebate of the end face being positioned at tube header section 5, make when interior pressure is by when being arranged at having a flexible metallic packing ring 11 (i.e. notch direction) forces laterally in the second closure gasket groove 10, along with the spacing between the second closure gasket groove 10 two cell walls reduces gradually, the tension force had between flexible metallic packing ring 11 and two cell wall is larger, make to have flexible metallic packing ring 11 tightly be closely attached on the object that cell wall realizes tightening seal.
embodiment 3
The detailed description of the invention three 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, in the present embodiment unaccounted feature, adopts the explanation in embodiment 1, no longer repeats at this.The difference of the present embodiment and embodiment 1 is, as shown in Figure 4, and the square of the cross sectional shape of described second closure gasket groove 10 to be bottom land be arc, or;
The cross sectional shape of described second closure gasket groove 10 is the combination arc structure be made up of arc, specifically comprises:
The arc being docked the symmetry formed by two identical arcs as shown in Figure 5, and as shown in Figure 6, docks by two different arcs the asymmetrical arc formed.When having under flexible metallic packing ring 11 is subject to the effect of interior pressure, by the acting in conjunction power of the both direction of the second closure gasket groove 10, making that there is flexible metallic packing ring 11 and being out of shape along cell wall swelling.
Wherein, second closure gasket groove 10 of cross sectional shape to be bottom land the be square of arc, when having under flexible metallic packing ring 11 is subject to the effect of interior pressure, the inclined-plane, right angle of the second closure gasket groove 10 has flexible metallic packing ring 11 apply certain active force to this, make it along narrower slot space swelling distortion, make it have good sealing property.
embodiment 4
The detailed description of the invention four 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, no longer repeat at this.The difference of the present embodiment and embodiment 1 is, the cross section that described first closure gasket groove 9 is arranged to be made up of the outer circumferential side of the First terrace of described seam step 61 and described plain cushion side ring 72 is the first trapezoidal closure gasket groove 9 and trapezoidal side shrinks along the bottom land of described first closure gasket groove 9 to the notch of described first closure gasket groove 9.
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 not isosceles trapezoidal structure, when interior pressure have flexible metallic packing ring 11 force to notch position time, make it along narrower slot space swelling distortion, make it more be adjacent to the cell wall of the first closure gasket groove 9, there is good sealing property.
embodiment 5
The detailed description of the invention five 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, no longer repeat at this.The difference of the present embodiment and embodiment 1 is, described in have flexible metallic packing ring 11 are cross sections is the soft metal structure of C shape.The soft metal similar catapult of C shape, under the effect of interior pressure, swelling can be opened to both sides in its two ends.
embodiment 6
The detailed description of the invention six 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, in the present embodiment unaccounted feature, adopts the explanation in embodiment 1, no longer repeats at this.The difference of the present embodiment and embodiment 1 is, described 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.Pinch seal between the second step face being more conducive to plain cushion side ring 72 and tube header section 5, is 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 application specifically can be applicable on the heat transfer requirements of petroleum refining and chemical industry, Coal Chemical Industry, chemical fertilizer, air-conditioning, air cooling, electric power facility equipment etc., comprise to the application mode such as dielectric heating or 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 technical scheme of the application; but not the restriction to the application's protection domain; although done to explain to the application with reference to preferred embodiment; those of ordinary skill in the art is to be understood that; can modify to the technical scheme of the application or equivalent replacement, and not depart from essence and the scope of technical scheme.
Claims (8)
1. the hermetically-sealed construction of a tube header of tube-type heat exchanger, include tube header section, bobbin carriage end cap, be arranged at the sphere film seal disc between the end of described tube header section and described bobbin carriage end cap, described sphere film seal disc includes the plain cushion side ring being arranged at middle sphere diaphragm and arranging along the outer circumferential side of described sphere diaphragm, the end of described tube header section 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 tube header section, its other end is clamped in described bobbin carriage end cap, described tube header section is inwardly provided with seam step along the end face of described tube header section, the second step face that described seam step comprises First terrace and is connected with described First terrace, described second step face is perpendicular to the central axis of described tube header section, the first closure gasket groove is formed between the First terrace of described seam step and the outer circumferential side of described plain cushion side ring, the second step of described seam step is provided with the second closure gasket groove towards interior, the notch of described second closure gasket groove is clamped in the inner face of described plain cushion side ring, it is characterized in that: be provided with in described first closure gasket groove and described second closure gasket groove and there is flexible metallic packing ring, the right-angled trapezium of the cross sectional shape of described second closure gasket groove to be bottom land be wedged bottom.
2. the hermetically-sealed construction of a tube header of tube-type heat exchanger, include tube header section, bobbin carriage end cap, be arranged at the sphere film seal disc between the end of described tube header section and described bobbin carriage end cap, described sphere film seal disc includes the plain cushion side ring being arranged at middle sphere diaphragm and arranging along the outer circumferential side of described sphere diaphragm, the end of described tube header section 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 tube header section, its other end is clamped in described bobbin carriage end cap, described tube header section is inwardly provided with seam step along the end face of described tube header section, the second step face that described seam step comprises First terrace and is connected with described First terrace, described second step face is perpendicular to the central axis of described tube header section, the first closure gasket groove is formed between the First terrace of described seam step and the outer circumferential side of described plain cushion side ring, the second step of described seam step is provided with the second closure gasket groove towards interior, the notch of described second closure gasket groove is clamped in the inner face of described plain cushion side ring, it is characterized in that: be provided with in described first closure gasket groove and described second closure gasket groove and there is flexible metallic packing ring, the cross sectional shape of described second closure gasket groove is bottom land be the square of arc or the cross sectional shape of described second closure gasket groove is the combination arc structure be made up of arc.
3. the hermetically-sealed construction of a tube header of tube-type heat exchanger, include tube header section, bobbin carriage end cap, be arranged at the sphere film seal disc between the end of described tube header section and described bobbin carriage end cap, described sphere film seal disc includes the plain cushion side ring being arranged at middle sphere diaphragm and arranging along the outer circumferential side of described sphere diaphragm, the end of described tube header section 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 tube header section, its other end is clamped in described bobbin carriage end cap, described tube header section is inwardly provided with seam step along the end face of described tube header section, the second step face that described seam step comprises First terrace and is connected with described First terrace, described second step face is perpendicular to the central axis of described tube header section, the first closure gasket groove is formed between the First terrace of described seam step and the outer circumferential side of described plain cushion side ring, the second step of described seam step is provided with the second closure gasket groove towards interior, the notch of described second closure gasket groove is clamped in the inner face of described plain cushion side ring, be provided with in described first closure gasket groove and described second closure gasket groove and there is flexible metallic packing ring, it is characterized in that: the cross section that described first closure gasket groove is arranged to be made up of the outer circumferential side of the First terrace of described seam step and described plain cushion side ring is the first trapezoidal closure gasket groove and trapezoidal side shrinks along the bottom land of described first closure gasket groove to the notch of described first closure gasket groove.
4. the hermetically-sealed construction of a kind of tube header of tube-type heat exchanger according to claim 1 or 2 or 3, is characterized in that: described in have flexible metallic packing ring be cross section is the soft metal structure of O shape.
5. the hermetically-sealed construction of a kind of tube header of tube-type heat exchanger according to claim 4, is characterized in that: described cross section is the soft metal structure of O shape is the solid rubber structure of inner band winding steel wire or the hollow rubber structure of inner band winding steel wire.
6. the hermetically-sealed construction of a kind of tube header of tube-type heat exchanger according to claim 1 or 2 or 3, is characterized in that: described in have flexible metallic packing ring be cross section is the soft metal structure of C shape.
7. the hermetically-sealed construction of a kind of tube header of tube-type heat exchanger according to claim 1 or 2 or 3, is characterized in that: described in there is flexible metallic packing ring and the space between described first closure gasket groove and described second closure gasket groove is all filled with heat-insulating powder.
8. the hermetically-sealed construction of a kind of tube header of tube-type heat exchanger according to claim 1 or 2 or 3, is characterized in that: described 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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| CN201310525657.5A CN103557738B (en) | 2013-10-31 | 2013-10-31 | A kind of hermetically-sealed construction of tube header of tube-type heat exchanger |
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| CN201310525657.5A CN103557738B (en) | 2013-10-31 | 2013-10-31 | A kind of hermetically-sealed construction of tube header of tube-type heat exchanger |
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| CN104776749B (en) * | 2015-03-30 | 2016-09-21 | 茂名重力石化机械制造有限公司 | A kind of tube header of tube-type heat exchanger seals structure |
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| CN202470835U (en) * | 2012-02-29 | 2012-10-03 | 茂名重力石化机械制造有限公司 | Tubular heat exchanger |
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| CN203550744U (en) * | 2013-10-31 | 2014-04-16 | 茂名重力石化机械制造有限公司 | Sealing structure of tube box of tube type heat exchanger |
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| US5022437A (en) * | 1987-05-15 | 1991-06-11 | Brown Boveri Reaktor Gmbh | Hollow plug for blocking a heat exchanger tube |
| CN202547479U (en) * | 2012-01-09 | 2012-11-21 | 无锡市鑫盛换热器制造有限公司 | Channel aluminum sealing head of heat exchanger |
| CN202470835U (en) * | 2012-02-29 | 2012-10-03 | 茂名重力石化机械制造有限公司 | Tubular heat exchanger |
| CN203550744U (en) * | 2013-10-31 | 2014-04-16 | 茂名重力石化机械制造有限公司 | Sealing structure of tube box of tube type heat exchanger |
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| CN103557738A (en) | 2014-02-05 |
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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 |