CN104913551A - Multi-system dry-type evaporator and manufacture method - Google Patents
Multi-system dry-type evaporator and manufacture method Download PDFInfo
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- CN104913551A CN104913551A CN201510364467.9A CN201510364467A CN104913551A CN 104913551 A CN104913551 A CN 104913551A CN 201510364467 A CN201510364467 A CN 201510364467A CN 104913551 A CN104913551 A CN 104913551A
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- end cap
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B39/00—Evaporators; Condensers
- F25B39/02—Evaporators
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/26—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass heat exchangers or the like
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Abstract
The invention provides a multi-system dry-type evaporator which belongs to the technical field of water chilling units and solves the problem of refrigerant leakage in existing dry-type evaporators. The invention also provides a manufacture method of the multi-system dry-type evaporator, which belongs to the technical field of mechanical processing and solves the problem of high production cost in the existing multi-system dry-type evaporator. The multi-system dry-type evaporator comprises a cylindrical body, a front pipe box and a rear pipe box, wherein fastening bolts pass through pipe box end caps of the front pipe box and the rear pipe box, and the fastening bolts are respectively sleeved by a first bushing and a second bushing. The manufacture method of the multi-system dry-type evaporator comprises the steps that through holes are disposed, assembly welding is conducted, the first bushing is positioned and welded, the second bushing is positioned and welded, and sealing faces are processed. The multi-system dry-type evaporator can prevent a refrigerant from being leaked from the front pipe box or the rear pipe box. The manufacture method of the multi-system dry-type evaporator can reduce production cost.
Description
Technical field
The invention belongs to handpiece Water Chilling Units technical field, relate to a kind of multisystem dry evaporator; The invention still further relates to a kind of method manufacturing multisystem dry evaporator, belong to Machining Technology field.
Background technology
Dry evaporator is that cold-producing medium is at heat exchange Bottomhole pressure, refrigerating medium is in the outer flowing of pipe, the heat of refrigerant suction refrigerating medium completes and once evaporates completely, in some refrigeration system, for saving space, and adapt to the larger feature of refrigerating capacity fluctuation, often the evaporimeter of multiple refrigeration system is processed into an entirety, and again can be separate between each system, realize the adjustment on a large scale of refrigerating capacity, therefore do not allow to there is string liquid or string vapour phenomenon between every two systems, otherwise by the stability of the refrigerating efficiency and system cloud gray model that affect compressor.Sealing property between each tube side of multisystem dry evaporator and between bobbin carriage and tube sheet is most important.
As Chinese utility model patent application (application number: the dual system and the multisystem dry evaporator channel structure that 200820204341.0) disclose a kind of high sealing performance, containing system admission chamber in comprising, system transitions chamber, the pipe box main body of system outlet chamber, liquid-distributing plate is provided with in described system admission chamber, described pipe box main body is integral type overall structure, structure is simple, pipe box main body is monoblock type structure, because pipe box main body is monolithic construction, so there is no weld defect and sealing surface phenomenon is hindered in weldering, weld seam is not had to seal quality problems, the condition of collaborating is there is not in bobbin carriage between chamber, solve the problem of collaborating and leaking outside between adjacent system bobbin carriage cavity, alleged overall bobbin carriage must be that monoblock cast or Integral die-forged are shaping, if be single-piece or a small amount of product, then processing charges is high, and in the application of actual industrial refrigeration system, a lot of situation needs arbitrarily to combine refrigerating capacity according to technique, this just has a lot of multisystem dry evaporators to be modular in design of having no way, therefore, multisystem dry evaporator market demand that is a small amount of or single-piece is very large.
Summary of the invention
The object of the invention is to there are the problems referred to above for existing technology, propose a kind of multisystem dry evaporator, this multisystem dry evaporator can prevent cold-producing medium from revealing from front header or rear header.
Another object of the present invention proposes a kind of method manufacturing multisystem dry evaporator, and the method for this manufacture multisystem dry evaporator can reduce production cost.
First object of the present invention realizes by following technical proposal: a kind of multisystem dry evaporator, comprise cylindrical shell, front header and rear header, the two ends of described cylindrical shell all have tube sheet, described front header and rear header are connected on the tube sheet at cylindrical shell two ends respectively, it is characterized in that, described front header and rear header include tube header section, the bobbin carriage end cap being connected in tube header section one end be connected in the tube header section other end and the channel flange be connected mutually with tube sheet, the tube case end of described front header covers and offers one group of horizontal arranged through hole and at least one group of through hole longitudinally arranged respectively, the tube case end of described rear header covers and offers at least one group of through hole longitudinally arranged, all fastening bolt is equipped with in described through hole, the inner of this fastening bolt is connected on tube sheet, outer end is connected mutually with bobbin carriage end cap, and between fastening bolt and bobbin carriage end cap, be provided with the hermetically-sealed construction that can seal through hole, described fastening bolt is all arranged with the first sleeve pipe, described first sleeve pipe is arranged with the second sleeve pipe, and between the first sleeve pipe lateral wall and the second sleeve pipe madial wall, there is space, all dividing plate is fixed with between adjacent two second sleeve pipes on same group of fastening bolt, one end sealing of described first sleeve pipe and the second sleeve pipe is connected on bobbin carriage end cap madial wall, described tube sheet sidewall is fixed with sealing gasket, the other end of above-mentioned first sleeve pipe and the second sleeve pipe is all pressed on sealing gasket.
Channel flange is connected on tube sheet, bobbin carriage inner chamber can be separated into the admission chamber being positioned at lower end and the steam output chamber being positioned at upper end by the dividing plate be connected between the second horizontal arranged sleeve pipe, admission chamber and steam output chamber are carried out individual segmentation by the dividing plate be connected between the second sleeve pipe longitudinally arranged, admission chamber and steam output chamber is made to separate in multiple cavity, and the corresponding multiple system of difference, sealing gasket has ring part, transverse part and longitudinal part, ring part is for sealing channel flange and tube sheet, fastening bolt is for increasing the fastening force of cylindrical shell and front header and rear header, namely the first horizontal arranged sleeve pipe and the end of the second sleeve pipe can be pressed on the transverse part of sealing gasket, the first sleeve pipe longitudinally arranged and the end of the second sleeve pipe can be pressed on the longitudinal part of sealing gasket, compacted sealing gasket there will be crimp and clamp-ons in the space between the first sleeve pipe and the second sleeve pipe simultaneously, thus the contact area added between sealing gasket and the first sleeve pipe and the second sleeve pipe, and then the sealing increased between tube sheet and the first sleeve pipe and the second sleeve pipe, avoid cold-producing medium to enter in the first sleeve pipe and flow to through hole, and between the outer end and through hole of fastening bolt, be provided with hermetically-sealed construction, sealing structure can ensure the sealing of through hole, second guarantee is provided for preventing leakage of refrigerant.
In above-mentioned multisystem dry evaporator, two pieces of dividing plates are all had between adjacent two second sleeve pipes on same group of fastening bolt, these two pieces of dividing plates parallel and have space, and dividing plate welds with two second outside of sleeve walls and is connected, one end of dividing plate described in two is all welded with bobbin carriage end cap madial wall and is connected, and the other end is all pressed on sealing gasket.By argon arc welding continuous welding between dividing plate and the second sleeve pipe and bobbin carriage end cap, ensure sealing, dividing plate is pressed on sealing gasket simultaneously, equally, sealing gasket there will be crimp and clamp-ons in the space between two pieces of dividing plates, thus the contact area added between sealing gasket and two pieces of dividing plates, and then the sealing increased between dividing plate and tube sheet, avoid occurring between adjacent admission chamber altering liquid phenomenon, occur between adjacent steam output chamber altering vapour phenomenon, avoid occurring between admission chamber and steam output chamber altering liquid or altering vapour phenomenon.
In above-mentioned multisystem dry evaporator, described hermetically-sealed construction comprises sealing ring, annular pressing plate and nut, through hole is stretched out in the outer end of described fastening bolt, above-mentioned nut is screwed onto the outer end of fastening bolt, described sealing ring and annular pressing plate are all set on fastening bolt, and between nut and bobbin carriage end cap, described sealing ring is between annular pressing plate and bobbin carriage end cap, and under the effect of nut, annular pressing plate press seal circle.I.e. tightening nut, nut can compress annular pressing plate, and sealing ring is pressed between annular pressing plate, bobbin carriage end cap sidewalls and fastening bolt sidewall, thus and gap between fastening bolt and through hole seal, certain hermetically-sealed construction also can directly adopt ring-shaped rubber pad and nut, make nut extrude rubber blanket by tightening nut, rubber blanket is out of shape and is pressed on bobbin carriage end cap sidewalls and fastening bolt sidewall, plays sealing function.
In above-mentioned multisystem dry evaporator, described annular pressing plate offers locating slot towards inner ring edge, side, the side circumference of bobbin carriage end cap, this locating slot has inclination cell wall, and the angle of inclination cell wall and annular pressing plate center line is 50 ° ~ 70 °, and above-mentioned sealing ring is positioned at locating slot.Locating slot cell wall entirety is in round table-like, and the inclination cell wall of locating slot, towards the gap between through hole and fastening bolt, can make sealing ring occur crimp and locally clamp-on the gap between through hole and fastening bolt, increasing contact area, improve sealing.
In above-mentioned multisystem dry evaporator, described tube sheet sidewall offers seal groove, and above-mentioned sealing gasket is positioned at seal groove, and described seal groove bottom surface offers screw, and above-mentioned fastening bolt is screwed onto in screw.Shape and the sealing gasket shape of seal groove adapt, and for location sealing pad, increase the contact area between sealing gasket and tube sheet simultaneously, improve sealing.
In above-mentioned multisystem dry evaporator, described first sleeve pipe and the second sleeve pipe all weld with bobbin carriage end cap madial wall and are connected.For argon arc welding continuous welding, there is good sealing effectiveness, can certainly integral molding be adopted.
In above-mentioned multisystem dry evaporator, described first sleeve pipe is arranged with some locating rings along its length, above-mentioned second casing pipe sleeve is located on locating ring, and described first sleeve pipe and the second sleeve pipe concentric are arranged.Locating ring can ensure the axiality of the first sleeve pipe and the second sleeve pipe, namely ensures the even of gap length between the first sleeve pipe and the second sleeve pipe, makes sealing gasket can be out of shape uniformly and be squeezed into above-mentioned space, increases sealing effectiveness.
Second object of the present invention realizes by following technical proposal: a kind of method manufacturing multisystem dry evaporator, and it is characterized in that, this manufacture method comprises the following steps:
A: cover at tube case end and offer through hole;
B: the one end welding of bobbin carriage end cap being connected in tube header section, is connected in the other end of tube header section by channel flange welding;
C: wear a location round steel in through hole, is located on the round steel of location by first set pipe box, fixed by location round steel, the welding of first set tube and tube case end cap be connected by argon arc welding after guarantee first set tube and tube case end cap is perpendicular;
D: several locating rings sheathed along its length on the first sleeve pipe, are located on locating ring by the second casing pipe sleeve, to be welded the second sleeve pipe with bobbin carriage end cap by argon arc welding and is connected;
E: dividing plate is welded on the second outside of sleeve wall by argon arc welding, and dividing plate is welded by argon arc welding with bobbin carriage end cap sidewalls;
F: processed by the sealing surface of lathe to the sealing surface of channel flange, the sealing surface of dividing plate and bobbin carriage end cap;
G: process seal groove and screw by lathe on tube sheet sidewall, is connected in sealing gasket in seal groove;
H: one end front header being connected in cylindrical shell by holding screw, rear header is connected in the other end of cylindrical shell by fastening bolt.
In step B, C, D, cover at tube case end in advance before E and offer through hole, certainly also inlet opening and vapor opening to be offered, namely perforate is carried out to single component convenient, the sealing surface of channel flange is the side of fitting with tube sheet, the sealing surface of dividing plate is for be pressed on edge with sealing gasket, the sealing surface of bobbin carriage end cap is lateral wall, namely the side for matching with annular pressing plate and sealing ring, therefore step F needs in step B, C, D, E carries out after completing, need a step clamping when processing each sealing surface simultaneously, the sealing surface of guarantee channel flange and dividing plate sealing surface are at grade, also can ensure the depth of parallelism of channel flange sealing surface and bobbin carriage end cap sealing surface simultaneously, by this manufacture method, independently can process front header and rear header and cylindrical shell, afterwards front header and rear header are affixed on cylindrical shell, processing is simple, production cost is low, the sealing of cylindrical shell and front header and rear header can be ensured simultaneously.
In the method for above-mentioned manufacture multisystem dry evaporator, to the pad between first set tube and tube case end cap after described step C, before step D, after described step e, before step F, Magnetic testing is carried out to the pad between the pad between the second sleeve pipe and bobbin carriage end cap, dividing plate and the second sleeve pipe and bobbin carriage end cap.Magnetic testing is for detecting the surface of ferrimagnet or nearly surperficial defect, because discontinuous magnetic trace heap combines in detected surface, so discontinuous shape, position and size can be demonstrated intuitively, namely the sealing of pad can be detected, Magnetic testing is carried out after welding completes, for there being the carrying out of weld defect to reprocess, ensure welded seal.
Compared with prior art, this multisystem dry evaporator has the following advantages:
1, because the end of the first sleeve pipe and the second sleeve pipe can be pressed on sealing gasket, compacted sealing gasket there will be crimp and clamp-ons in the space between the first sleeve pipe and the second sleeve pipe simultaneously, thus the contact area added between sealing gasket and the first sleeve pipe and the second sleeve pipe, and then the sealing increased between tube sheet and the first sleeve pipe and the second sleeve pipe, avoid cold-producing medium to enter in the first sleeve pipe and flow to through hole.
2, because locating slot cell wall entirety is in round table-like, the inclination cell wall of locating slot, towards the gap between through hole and fastening bolt, can make sealing ring occur crimp and locally clamp-on the gap between through hole and fastening bolt, increasing contact area, improve sealing, avoid leakage of refrigerant.
3, because dividing plate has two pieces, be pressed on sealing gasket, sealing gasket there will be crimp and clamp-ons in the space between two pieces of dividing plates, thus the contact area added between sealing gasket and two pieces of dividing plates, and then the sealing increased between dividing plate and tube sheet, avoid occurring between adjacent admission chamber altering liquid phenomenon, occur between adjacent steam output chamber altering vapour phenomenon, avoid occurring between admission chamber and steam output chamber altering liquid or altering vapour phenomenon.
The method of this manufacture multisystem dry evaporator has the following advantages:
1, because this manufacture method independently can process front header and rear header and cylindrical shell, be affixed on cylindrical shell afterwards by front header and rear header, processing is simple, and production cost is low, can ensure the sealing of cylindrical shell and front header and rear header simultaneously.
2, because step F is carried out after step B, C, D, E complete, need a step clamping when processing each sealing surface simultaneously, the sealing surface of guarantee channel flange and dividing plate sealing surface at grade, also can ensure the depth of parallelism of channel flange sealing surface and bobbin carriage end cap sealing surface simultaneously.
Accompanying drawing explanation
Fig. 1 is the structure side view of this multisystem dry evaporator.
Fig. 2 is the partial structurtes sectional view of front header.
Fig. 3 is the structure front view of front header.
Fig. 4 is the structure front view of rear header.
Fig. 5 is the partial structurtes sectional view of multisystem dry evaporator.
Fig. 6 is the structure front view of the tube sheet be connected with front header.
Fig. 7 is the structure front view of the tube sheet be connected with rear header.
In figure, 1, cylindrical shell; 11, tube sheet; 111, seal groove; 112, screw; 2, front header; 3, rear header; 4, tube header section; 41, bobbin carriage end cap; 411, through hole; 42, channel flange; 5, fastening bolt; 51, the first sleeve pipe; 52, the second sleeve pipe; 53, locating ring; 6, hermetically-sealed construction; 61, sealing ring; 62, nut; 63, annular pressing plate; 631, locating slot; 7, dividing plate; 8, sealing gasket.
Detailed description of the invention
Be below specific embodiments of the invention and by reference to the accompanying drawings, technical scheme of the present invention is further described, but the present invention be not limited to these embodiments.
As Fig. 1, Fig. 2, Fig. 3, Fig. 4, shown in Fig. 5, a kind of multisystem dry evaporator, comprise cylindrical shell 1, front header 2 and rear header 3, the two ends of cylindrical shell 1 all have tube sheet 11, front header 2 and rear header 3 are connected on the tube sheet 11 at cylindrical shell 1 two ends respectively, front header 2 and rear header 3 include tube header section 4, the bobbin carriage end cap 41 being connected in tube header section 4 one end be connected in tube header section 4 other end and the channel flange 42 be connected mutually with tube sheet 11, the bobbin carriage end cap 41 of front header 2 offers respectively one group of horizontal arranged through hole 411 and at least one group of through hole longitudinally arranged 411, the bobbin carriage end cap 41 of rear header 3 offers at least one group of through hole longitudinally arranged 411, fastening bolt 5 is all equipped with in through hole 411, the inner of this fastening bolt 5 is connected on tube sheet 11, outer end is connected mutually with bobbin carriage end cap 41, and between fastening bolt 5 and bobbin carriage end cap 41, be provided with the hermetically-sealed construction 6 that can seal through hole 411, fastening bolt 5 is all arranged with the first sleeve pipe 51, first sleeve pipe 51 is arranged with the second sleeve pipe 52, and between the first sleeve pipe 51 lateral wall and the second sleeve pipe 52 madial wall, there is space, dividing plate 7 is all fixed with between adjacent two second sleeve pipes 52 on same group of fastening bolt 5, one end sealing of the first sleeve pipe 51 and the second sleeve pipe 52 is connected on bobbin carriage end cap 41 madial wall, tube sheet 11 sidewall is fixed with sealing gasket 8, the other end of above-mentioned first sleeve pipe 51 and the second sleeve pipe 52 is all pressed on sealing gasket 8.Channel flange 42 is connected on tube sheet 11, bobbin carriage inner chamber can be separated into the admission chamber being positioned at lower end and the steam output chamber being positioned at upper end by the dividing plate 7 be connected between the second horizontal arranged sleeve pipe 52, admission chamber and steam output chamber are carried out individual segmentation by the dividing plate 7 be connected between the second sleeve pipe 52 longitudinally arranged, admission chamber and steam output chamber is made to separate in multiple cavity, and the corresponding multiple system of difference, sealing gasket 8 has ring part, transverse part and longitudinal part, ring part is for sealing channel flange 42 and tube sheet 11, fastening bolt 5 is for increasing the fastening force of cylindrical shell 1 and front header 2 and rear header 3, namely the first horizontal arranged sleeve pipe 51 and the end of the second sleeve pipe 52 can be pressed on the transverse part of sealing gasket 8, the first sleeve pipe 51 longitudinally arranged and the end of the second sleeve pipe 52 can be pressed on the longitudinal part of sealing gasket 8, compacted sealing gasket 8 there will be crimp and clamp-ons in the space between the first sleeve pipe 51 and the second sleeve pipe 52 simultaneously, thus the contact area added between sealing gasket 8 and the first sleeve pipe 51 and the second sleeve pipe 52, and then the sealing increased between tube sheet 11 and the first sleeve pipe 51 and the second sleeve pipe 52, avoid cold-producing medium to enter in the first sleeve pipe 51 and flow to through hole 411, and between the outer end of fastening bolt 5 and through hole 411, be provided with hermetically-sealed construction 6, sealing structure 6 can ensure the sealing of through hole 411, second guarantee is provided for placing leakage of refrigerant.
Specifically, composition graphs 6, shown in Fig. 7, two pieces of dividing plates 7 are all had between adjacent two second sleeve pipes 52 on same group of fastening bolt 5, these two pieces of dividing plates 7 parallel and have space, and dividing plate 7 welds with two second sleeve pipe 52 lateral walls and is connected, one end of two dividing plates 7 is all welded with bobbin carriage end cap 41 madial wall and is connected, the other end is all pressed on sealing gasket 8, by argon arc welding continuous welding between dividing plate 7 and the second sleeve pipe 52 and bobbin carriage end cap 41, ensure sealing, dividing plate 7 is pressed on sealing gasket 8 simultaneously, equally, sealing gasket 8 there will be crimp and clamp-ons in the space between two pieces of dividing plates 7, thus the contact area added between sealing gasket 8 and two pieces of dividing plates 7, and then the sealing increased between dividing plate 7 and tube sheet 11, avoid occurring between adjacent admission chamber altering liquid phenomenon, occur between adjacent steam output chamber altering vapour phenomenon, avoid occurring between admission chamber and steam output chamber altering liquid or altering vapour phenomenon.Tube sheet 11 sidewall offers seal groove 111, sealing gasket 8 is positioned at seal groove 111, bottom surface offers screw 112 to seal groove 111, fastening bolt 5 is screwed onto in screw 112, shape and sealing gasket 8 shape of seal groove 111 adapt, for location sealing pad 8, increase the contact area between sealing gasket 8 and tube sheet 11 simultaneously, improve sealing.First sleeve pipe 51 and the second sleeve pipe 52 all weld with bobbin carriage end cap 41 madial wall and are connected, and are argon arc welding continuous welding, have good sealing effectiveness, can certainly adopt integral molding.First sleeve pipe 51 is arranged with some locating rings 53 along its length, second sleeve pipe 52 is set on locating ring 53, first sleeve pipe 51 and the second sleeve pipe 52 concentric are arranged, locating ring 53 can ensure the axiality of the first sleeve pipe 51 and the second sleeve pipe 52, namely the even of gap length between the first sleeve pipe 51 and the second sleeve pipe 52 is ensured, make sealing gasket 8 can be out of shape uniformly and be squeezed into above-mentioned space, increase sealing effectiveness.
Shown in composition graphs 5, hermetically-sealed construction 6 comprises sealing ring 61, annular pressing plate 63 and nut 62, through hole 411 is stretched out in the outer end of fastening bolt 5, nut 62 is screwed onto the outer end of fastening bolt 5, sealing ring 61 and annular pressing plate 63 are all set on fastening bolt 5, and between nut 62 and bobbin carriage end cap 41, sealing ring 61 is between annular pressing plate 63 and bobbin carriage end cap 41, and under the effect of nut 62, annular pressing plate 63 press seal circle 61, i.e. tightening nut 62, nut 62 can compress annular pressing plate 63, and sealing ring 61 is pressed on annular pressing plate 63, between bobbin carriage end cap 41 sidewall and fastening bolt 5 sidewall, thus and gap between fastening bolt 5 and through hole 411 seal, certain hermetically-sealed construction 6 also directly can adopt ring-shaped rubber pad and nut 62, nut 62 is made to extrude rubber blanket by tightening nut 62, rubber blanket is out of shape and is pressed on bobbin carriage end cap 41 sidewall and fastening bolt 5 sidewall, play sealing function.Annular pressing plate 63 offers locating slot 631 towards inner ring edge, side, the side circumference of bobbin carriage end cap 41, this locating slot 631 has inclination cell wall, and the angle of inclination cell wall and annular pressing plate 63 center line is 60 °, sealing ring 61 is positioned at locating slot 631, locating slot 631 cell wall entirety is in round table-like, the inclination cell wall of locating slot 631 is towards the gap between through hole 411 and fastening bolt 5, sealing ring 61 can be made to occur crimp and locally clamp-on the gap between through hole 411 and fastening bolt 5, increase contact area, improve sealing.
Manufacture a method for multisystem dry evaporator, specific as follows: on bobbin carriage end cap 41, to offer through hole 411, namely before welding perforate is carried out to single component convenient, then bobbin carriage end cap 41 welding is connected in one end of tube header section 4, channel flange 42 welding is connected in the other end of tube header section 4, a location round steel is worn in through hole 411, first sleeve pipe 51 is set on the round steel of location, after guarantee first sleeve pipe 51 and bobbin carriage end cap 41 are perpendicular, location round steel is fixed, by argon arc welding the first sleeve pipe 51 welded with bobbin carriage end cap 41 and be connected, after having welded, location round steel is extracted, and butt welding contact carries out Magnetic testing, several locating rings 53 sheathed along its length on the first sleeve pipe 51, are set on locating ring 53 by the second sleeve pipe 52, to be welded by the second sleeve pipe 52 be connected by argon arc welding with bobbin carriage end cap 41, dividing plate 7 is welded on the second sleeve pipe 52 lateral wall by argon arc welding, and dividing plate 7 is welded by argon arc welding with bobbin carriage end cap 41 sidewall, Magnetic testing is carried out to the pad between the pad between the second sleeve pipe 52 and bobbin carriage end cap 41, dividing plate 7 and the second sleeve pipe 52 and bobbin carriage end cap 41, Magnetic testing is for detecting the surface of ferrimagnet or nearly surperficial defect, because discontinuous magnetic trace heap combines in detected surface, so discontinuous shape, position and size can be demonstrated intuitively, namely the sealing of pad can be detected, Magnetic testing is carried out after welding completes, for there being the carrying out of weld defect to reprocess, ensure welded seal, by the sealing surface of lathe to channel flange 42, the sealing surface of dividing plate 7 and the sealing surface of bobbin carriage end cap 41 are processed, the sealing surface of channel flange 42 is the side of fitting with tube sheet 11, the sealing surface of dividing plate 7 is for be pressed on edge with sealing gasket 8, the sealing surface of bobbin carriage end cap 41 is lateral wall, namely the side for matching with annular pressing plate 63 and sealing ring 61, need a step clamping when processing each sealing surface simultaneously, the sealing surface of guarantee channel flange 42 and dividing plate 7 sealing surface are at grade, also can ensure the depth of parallelism of channel flange 42 sealing surface and bobbin carriage end cap 41 sealing surface simultaneously, on tube sheet 11 sidewall, seal groove 111 and screw 112 is processed by lathe, sealing gasket 8 is connected in seal groove 111, front header 2 is connected in one end of cylindrical shell 1 by holding screw, rear header 3 is connected in the other end of cylindrical shell 1 by fastening bolt 5.By this manufacture method, independently can process front header 2 and rear header 3 and cylindrical shell 1, be affixed on cylindrical shell 1 afterwards by front header 2 and rear header 3, processing is simple, production cost is low, can ensure the sealing of cylindrical shell 1 and front header 2 and rear header 3 simultaneously.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present invention or surmount the scope that appended claims defines.
Although more employ the terms such as cylindrical shell 1, tube sheet 11, seal groove 111 herein, do not get rid of the possibility using other term.These terms are used to be only used to describe and explain essence of the present invention more easily; The restriction that they are construed to any one additional is all contrary with spirit of the present invention.
Claims (9)
1. a multisystem dry evaporator, comprise cylindrical shell (1), front header (2) and rear header (3), the two ends of described cylindrical shell (1) all have tube sheet (11), described front header (2) and rear header (3) are connected on the tube sheet (11) at cylindrical shell (1) two ends respectively, it is characterized in that, described front header (2) and rear header (3) include tube header section (4), the bobbin carriage end cap (41) being connected in tube header section (4) one end be connected in tube header section (4) other end and the channel flange (42) be connected mutually with tube sheet (11), the bobbin carriage end cap (41) of described front header (2) offers respectively one group of horizontal arranged through hole (411) and at least one group of through hole longitudinally arranged (411), the bobbin carriage end cap (41) of described rear header (3) offers at least one group of through hole longitudinally arranged (411), fastening bolt (5) is all equipped with in described through hole (411), the inner of this fastening bolt (5) is connected on tube sheet (11), outer end is connected mutually with bobbin carriage end cap (41), and between fastening bolt (5) and bobbin carriage end cap (41), be provided with the hermetically-sealed construction (6) that can seal through hole (411), described fastening bolt (5) is all arranged with the first sleeve pipe (51), described first sleeve pipe (51) is arranged with the second sleeve pipe (52), and between the first sleeve pipe (51) lateral wall and the second sleeve pipe (52) madial wall, there is space, dividing plate (7) is all fixed with between adjacent two second sleeve pipes (52) on same group of fastening bolt (5), one end sealing of described first sleeve pipe (51) and the second sleeve pipe (52) is connected on bobbin carriage end cap (41) madial wall, described tube sheet (11) sidewall is fixed with sealing gasket (8), the other end of above-mentioned first sleeve pipe (51) and the second sleeve pipe (52) is all pressed on sealing gasket (8).
2. multisystem dry evaporator according to claim 1, it is characterized in that, two pieces of dividing plates (7) are all had between adjacent two second sleeve pipes (52) on same group of fastening bolt (5), these two pieces of dividing plates (7) parallel and have space, and dividing plate (7) welds with two second sleeve pipe (52) lateral walls and is connected, one end of dividing plate described in two (7) is all welded with bobbin carriage end cap (41) madial wall and is connected, and the other end is all pressed on sealing gasket (8).
3. multisystem dry evaporator according to claim 2, it is characterized in that, described hermetically-sealed construction (6) comprises sealing ring (61), annular pressing plate (63) and nut (62), through hole (411) is stretched out in the outer end of described fastening bolt (5), above-mentioned nut (62) is screwed onto the outer end of fastening bolt (5), described sealing ring (61) and annular pressing plate (63) are all set on fastening bolt (5), and be positioned between nut (62) and bobbin carriage end cap (41), described sealing ring (61) is positioned between annular pressing plate (63) and bobbin carriage end cap (41), and under the effect of nut (62), annular pressing plate (63) press seal circle (61).
4. multisystem dry evaporator according to claim 3, it is characterized in that, described annular pressing plate (63) offers locating slot (631) towards inner ring edge, side, the side circumference of bobbin carriage end cap (41), this locating slot (631) has inclination cell wall, and the angle of inclination cell wall and annular pressing plate (63) center line is 50 ° ~ 70 °, above-mentioned sealing ring (61) is positioned at locating slot (631).
5. the multisystem dry evaporator according to Claims 2 or 3 or 4, it is characterized in that, described tube sheet (11) sidewall offers seal groove (111), above-mentioned sealing gasket (8) is positioned at seal groove (111), described seal groove (111) bottom surface offers screw (112), above-mentioned fastening bolt (5) is screwed onto in screw (112).
6. the multisystem flooded evaporator according to Claims 2 or 3 or 4, is characterized in that, described first sleeve pipe (51) and the second sleeve pipe (52) all weld with bobbin carriage end cap (41) madial wall and be connected.
7. the multisystem dry evaporator according to Claims 2 or 3 or 4, it is characterized in that, described first sleeve pipe (51) is arranged with some locating rings (53) along its length, above-mentioned second sleeve pipe (52) is set on locating ring (53), and described first sleeve pipe (51) and the second sleeve pipe (52) concentric are arranged.
8. manufacture a method for multisystem dry evaporator, it is characterized in that, this manufacture method comprises the following steps:
A: offer through hole (411) on bobbin carriage end cap (41);
B: one end bobbin carriage end cap (41) welding being connected in tube header section (4), is connected in the other end of tube header section (4) by channel flange (42) welding;
C: wear a location round steel in through hole (411), first sleeve pipe (51) is set on the round steel of location, after guarantee first sleeve pipe (51) and bobbin carriage end cap (41) are perpendicular, location round steel is fixed, by argon arc welding the first sleeve pipe (51) welded with bobbin carriage end cap (41) and be connected;
D: sheathed several locating rings (53) along its length on the first sleeve pipe (51), second sleeve pipe (52) is set on locating ring (53), by argon arc welding the second sleeve pipe (52) is welded with bobbin carriage end cap (41) and be connected;
E: dividing plate (7) is welded on the second sleeve pipe (52) lateral wall by argon arc welding, and dividing plate (7) is welded by argon arc welding with bobbin carriage end cap (41) sidewall;
F: processed by the sealing surface of lathe to the sealing surface of channel flange (42), the sealing surface of dividing plate (7) and bobbin carriage end cap (41);
G: process seal groove (111) and screw (112) by lathe on tube sheet (11) sidewall, is connected in sealing gasket (8) in seal groove (111);
H: one end front header (2) being connected in cylindrical shell (1) by holding screw, rear header (3) is connected in the other end of cylindrical shell (1) by fastening bolt (5).
9. the method for manufacture multisystem dry evaporator according to claim 8, it is characterized in that, after described step C, before step D, Magnetic testing is carried out to the pad between the first sleeve pipe (51) and bobbin carriage end cap (41), after described step e, before step F, Magnetic testing is carried out to the pad between the pad between the second sleeve pipe (52) and bobbin carriage end cap (41), dividing plate (7) and the second sleeve pipe (52) and bobbin carriage end cap (41).
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113465234A (en) * | 2021-06-08 | 2021-10-01 | 青岛海尔空调电子有限公司 | Heat exchanger and refrigerating system |
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| CN201302334Y (en) * | 2008-11-28 | 2009-09-02 | 珠海格力电器股份有限公司 | Dual-system and multi-system dry evaporator channel structure with high sealing property |
| CN202158695U (en) * | 2011-07-04 | 2012-03-07 | 张家港市江南利玛特设备制造有限公司 | Dual-system dry type evaporator |
| JP2012241910A (en) * | 2011-05-13 | 2012-12-10 | Mayekawa Mfg Co Ltd | Dry type evaporator, and method for improving cop of existing dry type evaporator |
| CN103277944A (en) * | 2013-05-08 | 2013-09-04 | 杭州赛富特设备有限公司 | Dry-type evaporator |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201302334Y (en) * | 2008-11-28 | 2009-09-02 | 珠海格力电器股份有限公司 | Dual-system and multi-system dry evaporator channel structure with high sealing property |
| JP2012241910A (en) * | 2011-05-13 | 2012-12-10 | Mayekawa Mfg Co Ltd | Dry type evaporator, and method for improving cop of existing dry type evaporator |
| CN202158695U (en) * | 2011-07-04 | 2012-03-07 | 张家港市江南利玛特设备制造有限公司 | Dual-system dry type evaporator |
| CN103277944A (en) * | 2013-05-08 | 2013-09-04 | 杭州赛富特设备有限公司 | Dry-type evaporator |
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| CN113465234A (en) * | 2021-06-08 | 2021-10-01 | 青岛海尔空调电子有限公司 | Heat exchanger and refrigerating system |
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Denomination of invention: A multi system dry evaporator and its manufacturing method Effective date of registration: 20210830 Granted publication date: 20170531 Pledgee: Zhejiang Wenling Rural Commercial Bank Co.,Ltd. Pledgor: TAIZHOU LONGJIANG CHEMICAL MACHINERY TECHNOLOGY Co.,Ltd. Registration number: Y2021330001276 |