CN108105445A - A kind of valve - Google Patents
A kind of valve Download PDFInfo
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- CN108105445A CN108105445A CN201611057796.XA CN201611057796A CN108105445A CN 108105445 A CN108105445 A CN 108105445A CN 201611057796 A CN201611057796 A CN 201611057796A CN 108105445 A CN108105445 A CN 108105445A
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- weld seam
- shell
- valve
- valve seat
- welding
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- 238000003466 welding Methods 0.000 claims abstract description 113
- 230000004927 fusion Effects 0.000 claims description 15
- 238000005057 refrigeration Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 abstract description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 239000013078 crystal Substances 0.000 description 29
- 239000000463 material Substances 0.000 description 13
- 238000010586 diagram Methods 0.000 description 11
- 230000035515 penetration Effects 0.000 description 10
- 230000009467 reduction Effects 0.000 description 7
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 101000911390 Homo sapiens Coagulation factor VIII Proteins 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 102000057593 human F8 Human genes 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 229940047431 recombinate Drugs 0.000 description 4
- 239000003507 refrigerant Substances 0.000 description 4
- 238000005266 casting Methods 0.000 description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- 230000008719 thickening Effects 0.000 description 2
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000008521 reorganization Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0254—Construction of housing; Use of materials therefor of lift valves with conical shaped valve members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/10—Welded housings
- F16K27/102—Welded housings for lift-valves
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
Abstract
The present invention provides a kind of valve, can take into account the connection air-tightness and intensity of shell and valve seat, and simple in structure, is readily produced manufacture, has good performance.The present invention includes valve seat and the cylindric shell with valve seat welding, and it is arranged on the valve rod in the shell, the binding site of the valve seat and the shell forms the first weld seam using continuous welding, the one side use that the two is axially away from the valve seat in the binding site is intermittently welded to form the second interrupted in the circumferential weld seam, and welding energy is more than first weld seam used by second weld seam.The present invention forms two weld seams by different welding procedures, to be respectively used to ensure air-tightness and intensity, and then air-tightness and intensity are taken into account, and the performance of valve will not have been had an impact, without the shell and valve seat using specific structure, it is easy to a wide range of interior application.
Description
Technical field
The present invention relates to refrigeration system technical field, more particularly to a kind of valve.
Background technology
In refrigeration system, such as the transcritical vapor compression refrigerating plant of CO2 refrigerants, due to make in the state of overcritical
With, than general refrigerant refrigerant pressure it is high, it is necessary to use high-voltage resistant electronic expansion valve.To ensure its high withstand voltage intensity, shell with
The material of valve seat has to select high-strength material, and needs to have and the comparable wall thickness of design pressure, while shell and valve seat
Junction requires high intensity and high-air-tightness.
The wall of the electric expansion valve used in general coolant refrigeration device, resistance to pressure that need not be very high, shell and valve seat
The ratio that thickness can design is relatively thin, and sufficient airtight bond strength is ensured that by low energy welding.But supercritical steam pressure
The electric expansion valve used in compression apparatus while shell uses high-strength material with valve seat requirement, will also add its wall thickness
Thickness, if still welded using low energy, the fusion penetration of welding position is inadequate, it is impossible to ensure sufficient airtight bond strength；If increase
Add its welding energy, though can deepen fusion penetration, high welding heat can cause the material internal grain of shell and valve seat welding position
Degree recombinates, and reduces welding position intensity, can not ensure high voltage, while high heat also results in temperature distortion and is damaged.
It please refers to Fig.1 and Fig. 2, Fig. 1 illustrates for a kind of cross-section structure of typical refrigeration system valve in the prior art
Figure；Fig. 2 is the structure diagram of another typical shell in the prior art.
For above-mentioned technical problem, following two solutions exist in the prior art：
In a solution, the integral thickness of shell 1 ' and valve seat 2 ' is thickeied, makes its thickness more than certain value,
Material grain size is recombinated even if reaching high heat, strength reduction, the intensity after reduction is still in claimed range, so as to meet weldering
Intensity requirement after connecing；
In another solution, only thickening casing 1 ' and 2 ' binding site thickness of valve seat make its thickness in certain value
More than, though reach high heat make material grain size recombinate, strength reduction, the intensity after reduction still in claimed range, from
And meet the intensity requirement after welding.
But above two solution there are problems that：
In the first solution, by 1 ' Integral upset of shell, such as Fig. 1 is equipped with magnet rotor 3 ' since shell 1 ' is internal,
Shell 1 ' is external equipped with driving coil 4 ', if 1 ' thickness of shell is thicker, directly results between magnet rotor 3 ' and driving coil 4 '
Distance increase, causes its driving force to be substantially reduced, and working performance declines.
In second of solution, the only thickness of thickening casing 1 ' and 2 ' binding site of valve seat, although which can solve
Certainly between magnet rotor 3 ' and driving coil 4 ' apart from the problem of, such as Fig. 2, but since it requires the wall thickness of shell 1 ' or valve seat 2 ' not
Uniformly, this requires the processing method of part the poor efficiency that high and highly difficult processing method is brought, and makes its cost of manufacture big
Amplitude increases, it is impossible to meet batch production requirements.
Therefore, there is an urgent need for designing a kind of valve, not influence the normal life of valve while air-tightness and intensity is taken into account
Production and use.
The content of the invention
The object of the present invention is to provide a kind of valves, can take into account the connection air-tightness and intensity of shell and valve seat, and tie
Structure is simple, is readily produced manufacture, has good performance.
To achieve the above object, the present invention provides a kind of valve, the cylindrical shape including valve seat and with valve seat welding
Shell and the valve rod that is arranged in the shell, the binding site of the valve seat and the shell is using continuous welding shape
Into the first weld seam, the one side that the two is axially away from the valve seat in the binding site to be formed in the circumferential using being intermittently welded
The second interrupted weld seam.
The valve of the present invention forms the first weld seam, to ensure to weld in the binding site of valve seat and shell using continuous welding
The air-tightness of socket part position；In the axial one side of the first weld seam using being intermittently welded to form the second weld seam, to ensure weld strength；Weldering
In termination process, welding energy is more than the first weld seam used by the second weld seam, and welding energy is relatively low used by the first weld seam, no
The material crystal grain of welding position can be caused to recombinate, intensity and air-tightness would not also be had an impact because of the variation of crystal grain,
It ensure that the air-tightness of valve seat and cage connection by the first weld seam；Simultaneously as the second weld seam is carried out discontinuously using high-energy
Welding, the weld seam formed have larger fusion penetration, can ensure the connectivity robustness of valve seat and shell, being intermittently welded in addition makes
The second weld seam is discontinuous in the circumferential so that the corresponding welding position of the second weld seam is divided with " point ", each heated position it
Between there are certain circumferential gap, the material in the gap site will not be influenced by welding energy, can be kept original
High intensity crystal grain, and then avoid generate large area crystal grain Reorganization generation, with will pass through the second weld seam improve connection can
While by property, the strength reduction caused by crystal grain recombinates is avoided.
As it can be seen that compared with using the connection mode of a weld seam in the prior art, the present invention passes through different welding procedures
Two weld seams are formed, to be respectively used to ensure air-tightness and intensity, and then have taken into account air-tightness and intensity, and will not be to valve
Performance have an impact, without the shell and valve seat using specific structure, be easy to a wide range of in application.
Optionally, it is described to be intermittently welded and/or the continuous welding is using Laser Welding.
Optionally, it is intermittently welded when described with the continuous welding using the wall thickness of Laser Welding and the shell 0.4
When between~1mm, the bonding power continuously welded is between 350~500W, and the bonding power being intermittently welded is 380
Between~550W.
Optionally, it is intermittently welded when described with the continuous welding using the wall thickness of Laser Welding and the shell 0.4
When between~1mm, the welding depth of fusion continuously welded is less than the welding depth of fusion being intermittently welded.
Optionally, it is described to be intermittently welded as spot welding.
Optionally, the axial spacing of first weld seam and second weld seam is 0.2~1.5mm.
Optionally, when the outer diameter of the shell is 15~25mm, in second weld seam, the number of welds that is intermittently welded
For 8~24.
Optionally, when the wall thickness of the shell and the valve seat is respectively less than predetermined value and difference is in preset range, institute
It states valve seat and connects a connecting plate in its radially inner side by being intermittently welded, first weld seam is not radially extended to the connection
Plate, second weld seam radially extend to the connecting plate by the shell, to be connected by the connecting plate and the valve seat
It connects.
Optionally, the valve seat is axially away from the one side of the shell in the binding site with the connecting plate and is formed
Attachment weld, the attachment weld and second weld seam are axially symmetric on first weld seam.
Optionally, the valve seat and the shell also have using at least one for being intermittently welded or being continuously welded
Three weld seams, in the axial direction, the 3rd weld seam are between first weld seam and second weld seam.
Optionally, the shell and the valve seat weld the valve of the electric expansion valve or solenoid valve to form refrigeration system
Body.
Description of the drawings
Fig. 1 is a kind of cross-sectional view of typical refrigeration system valve in the prior art；
Fig. 2 is the structure diagram of another typical shell in the prior art；
Fig. 3 is a kind of structure diagram of set-up mode of refrigeration system valve in the prior art；
Fig. 4 is the close-up schematic view of part A in Fig. 3 when being welded using low energy；
When Fig. 5 is using high heat input weld, the close-up schematic view of part A in Fig. 3；
Fig. 6 is a kind of structure diagram of the valve provided by the present invention in specific embodiment；
Fig. 7 is the close-up schematic view of part B in Fig. 6；
Fig. 8 is the structure diagram of weld seam part in valve shown in Fig. 6；
Fig. 9 is the relation schematic diagram for the welding energy and air-tightness continuously welded；
Figure 10 is the relation schematic diagram of the quantity of spot welding and weld strength when being intermittently welded；
Figure 11 is the relation schematic diagram for the welding energy and weld strength being intermittently welded；
Figure 12 is the first weld seam and the axial spacing of the second weld seam and the relation schematic diagram of weld strength；
Figure 13 is the structure diagram of valve provided by the present invention welding portion in another embodiment specific implementation mode；
Figure 14 by using welding manner shown in Figure 13 welding formation valve weld seam schematic diagram.
In Fig. 1-2：
Shell 1 ', valve seat 2 ', magnet rotor 3 ', driving coil 4 ', weld seam 5 '；
In Fig. 3-14：
Valve seat 1, shell 2, the first weld seam 3, the second weld seam 4, connecting plate 5, attachment weld 6.
Specific embodiment
The present invention provides a kind of valve, the connection air-tightness and intensity of shell and valve seat can be taken into account, and it is simple in structure,
Manufacture is readily produced, there is good performance.
Below in conjunction with attached drawing, the present invention is specifically introduced, so as to those skilled in the art's accurate understanding present invention's
Technical solution.
Axial, circumferential direction and radial direction as described herein are defined by reference of valve use state, under use state,
In valve, when opening and closing valve port, the direction of motion of valve rod to be axial, around axial rings around direction be circumferential, perpendicular to axial
Direction is radially.
- 5 are please referred to Fig.3, as shown in figure 3, valve can be electric expansion valve in the prior art, including valve seat 2 ' and and valve
The shells 1 ' of 2 ' welding of seat, are set with magnet rotor 3 ' shell 1 ' is interior, and valve opening and valve closing action are performed for driving stem.It is full
The use demand of sufficient high pressure-resistant refrigeration system such as utilizes high pressure-resistant electronics used by the refrigerating plant of carbon dioxide refrigerant
Expansion valve while wall thickness is not increased, it is necessary to ensure bonding strength and air-tightness.
As shown in figure 4, when welding energy is low used by shell 1 ' is welded with valve seat 2 ', the fusion penetration of weld seam 5 ' is shallower,
Sufficient air-tightness is cannot ensure, especially it cannot be guaranteed that bonding strength.As shown in figure 5, when welding energy is high, due to welding energy
It improves, the fusion penetration of weld seam 5 ' is substantially deepened, but the material crystal grain of welding position can recombinate, and crystal grain becomes larger, and intensity is caused to drop
It is low.
Due to the polycrystal being made of after metallic crystal many crystal grain, for the ambient temperature mechanical properties of metal, one
As be that grain size is more tiny, intensity and hardness are higher, while plasticity and toughness are also better.This is because crystal grain is thinner, plasticity becomes
Shape is dispersed in more crystal grain and carries out, and plastic deformation is also more uniform, and the stress concentration of generation is smaller；Moreover, crystal grain
Thinner, crystal boundary face is more, and crystal boundary is more tortuous, and indenting chance is more among crystal grain and crystal grain, is more unfavorable for crackle
It propagates and develops, more fasten each other, intensity and toughness are better.
Experiment proves that, in unwelded position, crystal grain is smaller and intensive, and the crystal grain recombinated after welding becomes larger, and crystal boundary
Direction it is roughly the same, almost tend to be parallel with fusion penetration, this causes the material easily to be torn along the direction of crystal boundary, i.e. material
The strength reduction of matter is formed and destroyed readily along the direction trend tear of above-mentioned crystal boundary.
As the above analysis, under high welding energy, while fusion penetration is ensured, hair that the position of weld seam 5 ' is highly vulnerable to breakage
Life is managed：It is to ensure air-tightness and intensity requirement simultaneously in shell 1 ' and the binding site of valve seat 2 ', it is entire circumferential whole
Using high heat input weld, cause the restructuring of the crystal grain occurrence of large-area of circumferential upper welding position, so as to cause strength reduction, and then
It destroys.
For the technical problem, solution of the invention is：The weld seam 5 ' for ensureing air-tightness and proof strength is separated
Processing, that is, be divided into twice weld seam, is respectively used to ensure air-tightness and intensity, from above-mentioned mechanism, is ensureing the same of air-tightness
When also ensure intensity, the solution of the present invention, which is equivalent to, to be provided dual intensity and ensures.
The valve of the present invention can be the valves such as electric expansion valve, solenoid valve or pressure switch, for ease of illustration this hair
Bright structure is illustrated below in conjunction with attached drawing by taking electric expansion valve as an example.
As shown in fig. 6, by taking electric expansion valve as an example, valve can include valve seat 1 and shell 2, and shell 2 is cylindrical shape, outside
Valve rod is equipped in shell 2, valve seat 1 is welded with shell 2, and is set with magnet rotor in shell 2, is acted for driving stem, to open and close
Valve port.
As shown in Figure 7 and Figure 8, valve seat 1 may be employed two weld seams with shell 2 and be attached, and be respectively 3 He of the first weld seam
Second weld seam 4 when being welded, is abutted, this abutting part with the end face of the valve chamber open end of valve seat 1 with the end face of shell 2 first
Position is the binding site of valve seat 1 and shell 2, is welded in the binding site by the way of connecting welding, is formed in week
Upward continuous first weld seam 3；Then, in the axial direction, to be formed in one side of the binding site away from valve seat 1 using being intermittently welded
Second weld seam 4, second weld seam 4 is interrupted in the circumferential, as shown in Figure 8.
In general, being intermittently welded as high heat input weld of using of the second weld seam 4, is continuously welded as used by the first weld seam 3
Low energy is welded, and high low energy is that in contrast, specific standards are referred to the prior art.Therefore, in welding process, second
Used welding energy when welding energy is greater than the welding of the first weld seam 3 used by weld seam 4.
To realize the connection of valve seat 1 and shell 2, a step can be processed in a side end face of valve seat 1 towards shell 2
Face, the step surface include the tubular face being radially bonded with the inner wall of shell 2 and the annular surface for being connected to the tubular face outer end, tubular
In step-like in axial, cross-sectional view, shell 2 is abutted with the end face of its axial one end with annular surface, and passes through company for face and annular surface
Continuous welding forms the first weld seam 3, as shown in Figure 7；The inner wall of shell 2 is closed with tubular face paste, and is intermittently welded to be formed using circumferential
Second weld seam 4 as shown in figure 8, the radial depth of the second weld seam 4 is greater than the first weld seam 3, is radially extended by shell 2 to valve
The tubular face of seat 1, as shown in Figure 7.
In the present invention, on the one hand valve seat 1 and shell 2 are connected and sealed by the first weld seam 3, continuous welding is used
Welding energy it is relatively low, do not interfere with the crystal grain of material so that valve seat 1 and shell 2 can be reliably connected by welding to be formed,
Ensure connection air-tightness between the two；On the other hand, it is intermittently welded and high heat input weld may be employed and form the second weld seam 4,
This high heat input weld has enough fusion penetrations, shell 2 is enabled to securely to be connected with valve seat 1, simultaneously as being intermittently welded not
The second weld seam 4 circumferentially to connect can be formed so that each welding position of the second weld seam 4 with it is similar it is dotted carry out circumferential division, into
And each to be heated between position there are certain gap, the material of the gap location is from the influence of welding energy, holding original
Some high intensity crystal grain, and then the crystal grain restructuring that high heat input weld generates large area is avoided, it also avoids to recombinate because of crystal grain
And intensity is influenced, the intensity of the two has been taken into account while realizing that valve seat 1 is securely connected with shell 2, disclosure satisfy that use demand.
Moreover either the first weld seam 3 or the second weld seam 4 can be formed between valve seat 1 and shell 2 reliable
Connection, and welding has substantially no effect on intensity, is equal to the dual guarantee for providing intensity.
In practice, the mode that spot welding may be employed is intermittently welded, so that the second weld seam 4 is distributed relatively in the circumferential
It is even, and weak ring is avoided the occurrence of, hereinafter illustrated by taking spot welding as an example.
Wherein, it is intermittently welded and continuously welds and Laser Welding or other welding procedures may be employed.
In the forming process of the first weld seam 3 and the second weld seam 4, it is necessary to welding procedure and the first weld seam 3 and second
Position of weld seam 4 etc. is effectively controlled, and is described in detail below in conjunction with Fig. 9-12.
First, since the position continuously welded only ensures air-tightness, therefore to welding energy requirement relative loose, it can use
Low energy can also use high-energy, if but energy it is too low, molten wide is smaller, it is difficult to ensure that shell 2 and valve seat 1 are in circumferential connection gas
Close property；It if energy is excessively high, welds that the stomata of generation is more, can equally influence the connection air-tightness of shell 2 and valve seat 1.Institute
With for influence of the welding energy to welding airtightness of sequential welding, there are relation as shown in Figure 9, those skilled in the art
It can be needed according to welding to select suitable welding energy for the first weld seam 3 according to the rule that Fig. 9 is provided.
The selection of welding energy is also related with the thickness of shell 2 and valve seat 1, in a kind of preferred embodiment, if even
Continuous welding is using Laser Welding, and when the wall thickness of shell 2 is between 0.4~1mm, the bonding power that continuously welds can 350~
Between 500W, to ensure to connect air-tightness.
Second, since the position being intermittently welded need to ensure its bonding strength, welding effect requirement shell 2 and valve seat 1 are real
Now securely connection, by taking spot welding as an example, then should have the quantity of spot welding certain requirement, cannot be effective if spot welding negligible amounts
The weld strength for ensureing shell 2 and valve seat 1.If spot welding quantity is extremely more, then the area of crystal grain restructuring is bigger, tends to be continuous
The effect of weldering and worthless.So for influence of the number of welds to weld strength of spot welding, exist as shown in Figure 10
Rule, those skilled in the art can select suitable number of welds for the second weld seam 4 according to Figure 10.
Meanwhile number of welds is also related to the outer diameter of shell 2 and valve seat 1 during welding, in a preferred embodiment, if shell
When 2 outer diameter is 15~25mm, the number of welds being intermittently welded in the second weld seam 4 can be 8~24.
Third, since the position being intermittently welded need to ensure its bonding strength, welding effect requirement shell 2 connects with valve seat 1
It connects securely, so should have certain requirement to the welding energy of spot welding, if energy is too low, welding penetration is inadequate, can not ensure
Its weld strength；If energy is excessively high, the stomata for welding generation is more and worthless.So welding for spot welding
Influence of the energy to weld strength, forms the graph shown in Figure 11, and those skilled in the art can be spot welding choosing according to the figure
Select suitable welding energy.
As described above, the selection of welding energy is related with the wall thickness of shell 2 and valve seat 1, if being intermittently welded also using sharp
Flush weld, when the wall thickness of shell 2 is between 0.4~1mm, the bonding power that is intermittently welded can between 380~550W, although
The scope of the bonding power exist with bonding power scope during continuous welding it is Chong Die, but in the weldering of same valve seat 1 and shell 2
In termination process, when choosing specific bonding power value, the welding energy being respectively intermittently welded should be greater than each welding continuously welded
Energy.
Fourth, since the air-tightness and intensity point twice weld seam of shell 2 and 1 welding position of valve seat are realized respectively, this
There should be certain requirement to the relative distance of twice welding.The first, the first weld seam 3 and the second weld seam 4 in the axial direction it is opposite away from
Should not be too small from H, if apart from close, then crystal grain restructuring will influence the intensity of spot welding position caused by sequential welding.The second, the
The relative distance H of one weld seam 3 and the second weld seam 4 in the axial direction should not be excessive, if apart from far, then spot welding and sequential welding it
Between in the range of, can also generate high pressure and act on the position of the first weld seam 3, overall compressive resistance is caused to reduce.So pin
To influence of the axial distance between the first weld seam 3 and the second weld seam 4 to weld strength, there are curve shown in Figure 12, this fields
Technical staff can select suitable axial spacing according to the curve for the first weld seam 3 and the second weld seam 4.In preferred embodiment
In, as shown in figure 8, the axial spacing H of the first weld seam 3 and the second weld seam 4 can be 0.2~1.5mm.
In another preferred embodiment, when being intermittently welded and continuously weld using the wall thickness of Laser Welding and shell 2
When between 0.4~1mm, the welding depth of fusion continuously welded is less than the welding depth of fusion being intermittently welded, with by continuous
The air-tightness for ensureing connection is welded, is intermittently welded guarantee weld strength, and continuously to weld and be intermittently welded not generating greatly
The crystal grain restructuring of area, takes into account connection air-tightness and reliability.
In addition, principle according to the present invention, can also form at least one between the first weld seam 3 and the second weld seam 4
Three weld seams, the 3rd weld seam specifically may be employed the continuous mode welded or be intermittently welded and formed, in the axial direction in the first weldering
Between 3 and second weld seam 4 of seam.
The setting of 3rd weld seam can further enhance the compressive resistance of valve, that is to say, that the present invention can be to weld seam
Quantity be not limited, be tightly connected as long as valve seat 1 and shell 2 are formed by the first weld seam 3, and be in axial direction apart from valve seat
It is the second weld seam 4 on the direction of 1 distalmost end, to ensure the intensity of valve, if those skilled in the art can be arranged as required to
Dry 3rd weld seam or even the one side that the second weld seam 4 can also be arranged on to 3 axial direction of the first weld seam, and axial in the first weld seam 3
Opposite side is arranged as required to the 3rd weld seam.
When the connection mode being combined using the first weld seam 3, the second weld seam 4 and the 3rd weld seam, no matter the 3rd weld seam is adopted
It is still intermittently welded with continuous welding, the rule shown in above in connection with Fig. 9-Figure 12 is referred to, to continuously welding and breaking
Technique of continuous welding etc. is limited, to form the valve met the requirements.
In addition, in valve seat 1 and shell 2, one of which can be thin-wall part, and another one is heavy section casting, or both
Think heavy section casting or be thin-wall part, when the two is thin-wall part, although the mode present invention employs twice weld seam is simultaneous
Air-tightness and intensity have been cared for, but since thin-wall part intensity itself is smaller, it is also possible to pressure-resistant use demand can not be met.Its
In, thin-wall part and heavy section casting are referred to standard of the prior art and are determined.
For the above situation, when valve seat 1 and shell 2 are thin-wall part, for ease of welding and avoiding welding to the two
Intensity has an impact, and the present invention can also set connecting plate 5, this embodiment is carried out specifically below in conjunction with Figure 13 and Figure 14
It is bright.
As shown in Figure 13 and Figure 14, when shell 2 and valve seat 1 are thin-wall part, the wall thickness of the two is respectively less than predetermined value, and
The difference of the two is also in preset range, on predetermined value and preset range with reference to the standard on thin-wall part in the prior art
It is configured；At this point, valve seat 1 can connect a connecting plate 5 by being intermittently welded in the inside of its radial direction, the connecting plate 5 is by valve
Seat 1 extends axially towards shell 2, and can cover the position of the first weld seam 3 and the second weld seam 4 in the axial direction；Shell 2 and valve
Seat 1 still to form the first weld seam 3 in the binding site of the two by continuously welding, and first weld seam 3 is circumferentially continuous, and radially
On do not extend to connecting plate 5, it is opposite to form weld seam in the axial one side of the first weld seam 3 with valve seat 1 and connecting plate 5 for shell 2
One side, be intermittently welded with connecting plate 5, and formed the second weld seam 4, at this point, the second weld seam 4 is radially by 2 company of extending to of shell
Fishplate bar 5, and stretch into the certain radial distance of connecting plate 5, then, the connection of valve seat 1 and shell 2 is realized by the connecting plate 5.
As shown in figure 13, in this embodiment, in fact, valve seat 1 is not directly connected to form the second weldering with shell 2
Seam 4, but the bonding strength for being indirectly connected with ensureing shell 2 and valve seat 1 is realized by connecting plate 5, correspondingly, the second weld seam
4 are not formed directly between valve seat 1 and shell 2, and are formed between shell 2 and connecting plate 5, and connecting plate 5 is logical
It crosses to be intermittently welded and be securely connected with valve seat 1.
At this point, the wall thickness of shell 2 and valve seat 1 can be suitable, the axial end face of shell 2 and valve seat 1 can be abutted mutually, and
Connecting plate 5 is set in the inside of the two, is then connected respectively with shell 2 and valve seat 1 by connecting plate 5 again, and connection mode is equal
Using being intermittently welded, according to above-mentioned principle, the intensity of valve seat 1 and shell 2 is not interfered with, it can also be by connecting plate 5 to the two
Strengthened, play the role of reinforcing plate, and then proof strength.
As shown in figure 14, connecting plate 5 can be an annular slab, and the inner wall of recline valve seat 1 and shell 2 is circumferentially around setting
It puts, herein, valve seat 1 can form an interrupted weld seam of circumferential direction with connecting plate 5 by being intermittently welded, and be referred to as attachment weld 6,
Continuous weld should have certain fusion penetration, radially extended by valve seat 1 to connecting plate 5, and stretch into the certain radial direction of connecting plate 5 away from
From the attachment weld 6 is in the one side that the first weld seam 3 is axially away from shell 2.
At this point, the both sides of 3 axial direction of the first weld seam form respectively two intermittent welds, connecting plate 5 is formed with the welding of shell 2
Weld seam be in the direction away from valve seat 1, be referred to as the second weld seam 4, the weld seam that the welding of connecting plate 5 and valve seat 1 is formed is connection
Corresponding welding procedure may be employed in weld seam 6, the second weld seam 4 and attachment weld 6, can also be at a distance of the identical axis of the first weld seam 3
To distance, it might even be possible to axially and symmetrically be set on the first weld seam 3.
The valve of the present invention, when specially electric expansion valve or solenoid valve, shell 2 and valve seat 1 are using the above structure
Welding forms the valve body of respective valves, and the in vivo structure of valve refer to prior art setting, and details are not described herein again.
Valve provided by the present invention is described in detail above.Specific case used herein is to the original of the present invention
Reason and embodiment are set forth, and the explanation of above example is only intended to help to understand core concept of the invention.It should
It points out, it for those skilled in the art, without departing from the principle of the present invention, can also be to this hair
Bright some improvement and modification can also be carried out, these improvement and modification are also fallen into the protection domain of the claims in the present invention.
Claims (11)
1. a kind of valve, cylindric shell (2) including valve seat (1) and with the valve seat (1) welding and it is arranged on described
Valve rod in shell (2), which is characterized in that the valve seat (1) and the binding site of the shell (2) are formed using continuous welding
First weld seam (3), the two are axially away from the one side of the valve seat (1) in the binding site and are formed in week using being intermittently welded
Interrupted the second weld seam (4) upwards.
2. valve as described in claim 1, which is characterized in that described to be intermittently welded and/or the continuous welding is using laser
Weldering.
3. valve as claimed in claim 2, which is characterized in that when described be intermittently welded uses laser with the continuous welding
Weldering and the shell (2) wall thickness between 0.4~1mm when, the bonding power continuously welded between 350~500W,
The bonding power being intermittently welded is between 380~550W.
4. valve as claimed in claim 2, which is characterized in that when described be intermittently welded uses laser with the continuous welding
When the wall thickness of weldering and the shell (2) is between 0.4~1mm, the welding depth of fusion continuously welded is less than described interrupted
The welding depth of fusion of welding.
5. valve as described in claim 1, which is characterized in that described to be intermittently welded as spot welding.
6. valve as described in claim 1, which is characterized in that the axial direction of first weld seam (3) and second weld seam (4)
Spacing is 0.2~1.5mm.
7. valve as described in claim 1, which is characterized in that when the outer diameter of the shell (2) is 15~25mm, described the
In two weld seams (4), the number of welds being intermittently welded is 8~24.
8. such as claim 1-7 any one of them valves, which is characterized in that when the shell (2) and the wall of the valve seat (1)
When thickness is respectively less than predetermined value and difference and be in preset range, the valve seat (1) is by being intermittently welded in its radially inner side connection one
Connecting plate (5), first weld seam (3) are not radially extended to the connecting plate (5), second weld seam (4) radially by
The shell (2) extends to the connecting plate (5), to be connected by the connecting plate (5) with the valve seat (1).
9. valve as claimed in claim 8, which is characterized in that the valve seat (1) is with the connecting plate (5) in the engaging portion
The one side that position is axially away from the shell (2) forms attachment weld (6), the attachment weld (6) and second weld seam (4)
It is axially symmetric on first weld seam (3).
10. such as claim 1-7 any one of them valves, which is characterized in that the valve seat (1) and the shell (2) also have
Have using at least one 3rd weld seam for being intermittently welded or being continuously welded, in the axial direction, the 3rd weld seam is in described
Between first weld seam (3) and second weld seam (4).
11. such as claim 1-7 any one of them valves, which is characterized in that the shell (2) and the valve seat (1) welding
Form the electric expansion valve of refrigeration system or the valve body of solenoid valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611057796.XA CN108105445B (en) | 2016-11-25 | 2016-11-25 | A kind of valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611057796.XA CN108105445B (en) | 2016-11-25 | 2016-11-25 | A kind of valve |
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| Publication Number | Publication Date |
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| CN108105445A true CN108105445A (en) | 2018-06-01 |
| CN108105445B CN108105445B (en) | 2019-12-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611057796.XA Active CN108105445B (en) | 2016-11-25 | 2016-11-25 | A kind of valve |
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| Country | Link |
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| CN (1) | CN108105445B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB191201611A (en) * | 1912-01-20 | 1913-02-20 | Harold John Davies | Improvements in the Manufacture of Double Helical Metallic Tubing. |
| CN2654971Y (en) * | 2003-10-01 | 2004-11-10 | 浙江三花股份有限公司 | Electronic expansion valve body structure |
| CN103075534A (en) * | 2012-05-21 | 2013-05-01 | 陈乃昶 | Method for machining long-distance transport pipe all-welded ball valve |
| CN103228392A (en) * | 2010-09-16 | 2013-07-31 | 新日铁住金株式会社 | Molded member and manufacturing method thereof |
| CN203784396U (en) * | 2014-04-23 | 2014-08-20 | 中国工程物理研究院化工材料研究所 | Multi-welding-seam structure for improving energy storage welding encapsulation performance of blast valve igniter |
-
2016
- 2016-11-25 CN CN201611057796.XA patent/CN108105445B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB191201611A (en) * | 1912-01-20 | 1913-02-20 | Harold John Davies | Improvements in the Manufacture of Double Helical Metallic Tubing. |
| CN2654971Y (en) * | 2003-10-01 | 2004-11-10 | 浙江三花股份有限公司 | Electronic expansion valve body structure |
| CN103228392A (en) * | 2010-09-16 | 2013-07-31 | 新日铁住金株式会社 | Molded member and manufacturing method thereof |
| CN103075534A (en) * | 2012-05-21 | 2013-05-01 | 陈乃昶 | Method for machining long-distance transport pipe all-welded ball valve |
| CN203784396U (en) * | 2014-04-23 | 2014-08-20 | 中国工程物理研究院化工材料研究所 | Multi-welding-seam structure for improving energy storage welding encapsulation performance of blast valve igniter |
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| Publication number | Publication date |
|---|---|
| CN108105445B (en) | 2019-12-03 |
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Effective date of registration: 20231107 Address after: 312500 Daming new area, Zhejiang Xinchang Economic Development Zone, Xinchang County, Shaoxing City, Zhejiang Province Patentee after: Zhejiang Sanhua Commercial Refrigeration Co.,Ltd. Address before: 312500 xialiquan village, Qixing street, Xinchang County, Shaoxing City, Zhejiang Province Patentee before: ZHEJIANG SANHUA CLIMATE AND APPLIANCE CONTROLS GROUP Co.,Ltd. |