CN203770787U - Novel flange structure for valve body - Google Patents
Novel flange structure for valve body Download PDFInfo
- Publication number
- CN203770787U CN203770787U CN201420151055.8U CN201420151055U CN203770787U CN 203770787 U CN203770787 U CN 203770787U CN 201420151055 U CN201420151055 U CN 201420151055U CN 203770787 U CN203770787 U CN 203770787U
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- CN
- China
- Prior art keywords
- flange
- valve body
- annular groove
- hole
- boss
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Valve Housings (AREA)
Abstract
The utility model discloses a novel flange structure for a valve body. The novel flange structure for a valve body comprises the valve body and a flange, the flange is provided with a flange hole, and the valve body is positioned in the flange hole and limited in the flange hole by the flange. One lateral side of the flange is provided with an annular groove peripherally formed along the flange hole, and the annular groove is 5-8mm in width and 3-4mm in depth; a boss is formed on one side, with the annular groove, of the end face of the flange hole, the boss is 3-5mm in width, and the valve body and the flange are connected by welding on one side, with the boss, of the flange hole.
Description
Technical field
The utility model relates to a kind of flanged connecting structure, particularly relates to a kind of for the novel flange structure on valve body.
Background technique
Flange (Flange) be again flange plate or bead.Flange be make pipe and pipe and and the interconnective part of valve, be connected in pipe end.Perforation on flange, bolt is close to two flanges.Between flange, seal with liner.Flange divides (silk connects) flange and welded flange and the cutting ferrule flange that be threaded.
In valve body field, general application is all forged flange, by valve body and flange by casting integrated moulding.As disclosed a kind of flange valve body in the Chinese invention patent prospectus that is 201110402729.8 in the patent No., the inlet of valve body has been provided with flange, described flange is provided with through hole, valve stem port place on valve body lateral body is provided with valve rod flange, described valve rod flange is provided with fastener hole, and described valve body and flange, valve rod flange adopt casting process once-through.This characteristic feature of an invention is: valve body and flange, valve rod flange adopt casting process once-through, easy to process, reduces and connects operation, and by using flange to connect, demolition, repair, replacement are convenient, are bolted connection, can realize the repairing of band water, time saving and energy saving.
But, once damage has appearred in flange or valve body, just whole valve body need to be changed, make some parts of not damaging also will, along with damaged part is dropped, cause waste.Therefore forged flange can be replaced with to welded flange, but near flange and the valve body temperature distortion of welded flange when welding is easy to cause solder joint.
Model utility content
Technical problem to be solved in the utility model is to provide a kind of for the novel flange structure on valve body for the above-mentioned state of the art, can in the time of flange or valve body appearance breakage, dismantle damaged parts and change, and can prevent the temperature distortion in the time of welding.
For achieving the above object, key is solder joint and flange, valve body surface around to keep apart by thermal-protective coating, is directed to this, and the utility model provides following technological scheme:
A kind of for the novel flange structure on valve body, include valve body and flange, on described flange, offer flange hole, described valve body be arranged in described flange hole and by described flange limiting at described flange hole, wherein, on a side of described flange, have the annular groove of circumferentially offering along described flange hole, the width range of described annular groove is 5-8mm, and the degree of depth of described annular groove is 3-4mm;
The end face of described flange hole forms boss in a side that is offering this annular groove, and the width range of described boss is 3-5mm, between described valve body and described flange in boss one side of described flange hole by being weldingly connected.
Adopt the novel flange structure of this structure, the width range that is boss is set to 3-5mm, if the width of boss is too large, annular groove is distant from the thermal region of welding, annular groove mechanism prevents the weak effect of welding heat distortion, after valve body and flange welding, still can there is obvious welding deformation in flange; If boss width is too little, easily make annular groove deform.Heat diffusion is to other positions of flange when effectively avoiding welding, and as preferably, the width range of described annular groove is that 5-8mm is good, and the degree of depth of this annular groove is taking 3-4mm as good.The size of annular groove can obtain the effect that prevents preferably thermal distortion within the scope of this, the oversize increase labor content of annular groove, and the effect of heat insulation of the undersized thermal distortion of annular groove is poor.
As above-mentioned novel flange structure in the utility model preferably, described flange has two the first opposing sides and the second side, described annular groove is arranged on the first side, described the second side is attachment face, connects with the surface of described valve body.
The novel flange structure that adopts this structure, described annular groove is arranged on the back side of attachment face.This make solder joint be with the opposing side of attachment face, after welding, do not affect the mounting plane structure of flange and the surface structure of valve body, effectively prevent deformation of products.
As the improvement of above-mentioned novel flange structure in the utility model, in described annular groove, be filled with the thermal-protective coating of being made by foamed plastics.
Adopting the novel flange structure of this structure, is in annular groove, to have filled the thermal-protective coating of being made up of foamed plastics, and foamed plastics is a kind of outstanding thermal-protective material, and filling foamed plastics in annular groove can effectively prevent that heat is to external diffusion.
In sum, compared with prior art, the utility model has the advantage of: flange is processed an annular groove of offering along welding hole edge on the end face welding with valve body, and, be formed with a boss at the weld of flange and valve body, the heat producing in the process of welding can be separated by this annular groove, allow welding heat around boss, locate weaken and then disappear, thereby can effectively avoid welding heat to be diffused into other positions of flange and valve body, prevent the distortion of flange and valve body in welding process, ensure the planeness of both junction surfaces.
Brief description of the drawings
Fig. 1 is the structural representation of novel flange structure in the utility model embodiment;
Fig. 2 is the welded structure schematic diagram of valve body and flange in Fig. 1 embodiment.
Reference character:
1, valve body; 2, flange; 2.1, flange hole; 2.2, the first side; 2.3, the second side; 3, annular groove; 4, thermal-protective coating; 5, boss.
Embodiment
In this manual, in order to narrate conveniently, taking the putting position under the normal operating condition of valve body and flange as reference azimuth, be used for the novel flange structure travel direction of this specification to describe.
Below in conjunction with accompanying drawing, embodiment is described in further detail the utility model.
As depicted in figs. 1 and 2, the present embodiment is a kind of for the novel flange structure on valve body, include valve body 1 and flange 2, on described flange 2, offer flange hole 2.1, described valve body 1 be fixed by welding in this flange hole 2.1 and the bore of its shape and flange hole suitable, can be by described flange limiting in described flange hole.
Above-mentioned flange has upper and lower two sides, be respectively the first side 2.2 that is positioned at top and the second side 2.3 that is positioned at below, wherein, on the second side 2.3 of described flange, there is the annular groove 3 of circumferentially offering along described flange hole, in described annular groove, be filled with the thermal-protective coating 4 of being made by foamed plastics, the width range of described annular groove is 5-8mm, and the degree of depth of described annular groove is 3-4mm;
The end face of described flange hole forms boss 5 in a side that offers this annular groove, and the width range of described boss is 3-5mm, circumferentially welding together along described boss between described valve body and described flange.
The above is only preferred implementation of the present utility model, and protection domain of the present utility model is also not only confined to above-described embodiment, and all technological schemes belonging under the utility model thinking all belong to protection domain of the present utility model.It should be pointed out that for those skilled in the art, in the some improvements and modifications that do not depart under the utility model principle prerequisite, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (3)
1. one kind for the novel flange structure on valve body, include valve body and flange, on described flange, offer flange hole, described valve body be arranged in described flange hole and by described flange limiting at described flange hole, it is characterized in that: on a side of described flange, there is the annular groove of circumferentially offering along described flange hole, the width range of described annular groove is 5-8mm, and the degree of depth of described annular groove is 3-4mm;
The end face of described flange hole forms boss in a side that is offering this annular groove, and the width range of described boss is 3-5mm, between described valve body and described flange in boss one side of described flange hole by being weldingly connected.
2. novel flange structure according to claim 1, it is characterized in that: described flange has two the first opposing sides and the second side, described annular groove is arranged on the first side, and described the second side is attachment face, connects with the surface of described valve body.
3. novel flange structure according to claim 1, is characterized in that: in described annular groove, be filled with the thermal-protective coating of being made up of foamed plastics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420151055.8U CN203770787U (en) | 2014-03-31 | 2014-03-31 | Novel flange structure for valve body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420151055.8U CN203770787U (en) | 2014-03-31 | 2014-03-31 | Novel flange structure for valve body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203770787U true CN203770787U (en) | 2014-08-13 |
Family
ID=51287978
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420151055.8U Expired - Fee Related CN203770787U (en) | 2014-03-31 | 2014-03-31 | Novel flange structure for valve body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203770787U (en) |
-
2014
- 2014-03-31 CN CN201420151055.8U patent/CN203770787U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140813 Termination date: 20150331 |
|
| EXPY | Termination of patent right or utility model |