CN205036875U - Low -temperature brake valve - Google Patents
Low -temperature brake valve Download PDFInfo
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- CN205036875U CN205036875U CN201520773098.4U CN201520773098U CN205036875U CN 205036875 U CN205036875 U CN 205036875U CN 201520773098 U CN201520773098 U CN 201520773098U CN 205036875 U CN205036875 U CN 205036875U
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- valve
- low
- valve rod
- temperature brake
- brake valve
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Abstract
The utility model discloses a low -temperature brake valve, including valve body, valve gap, valve rod, packing box, flashboard and bearing frame, the valve gap comprises last valve gap and lower valve gap welding, the packing box sets up the inboard at last valve gap, the upper portion of valve rod is equipped with the trapezoidal thread, and the valve rod lower part sets up to T type structure, T type inslot that this T type structure fixed mounting seted up on the flashboard, the middle part processing step inclined plane of valve rod, its and packing box bottom carbide cooperation, the bottom of packing box is equipped with to pack and fills up, and side of stacking up of packing is equipped with the filler, and the top of filler is equipped with to pack presses the cover, and pack and press the top of overlapping to be equipped with gland, be threaded connection between bearing frame and the valve gap, the cover is equipped with the bearing on the bearing frame. The utility model has the advantages of valve rod stable performance, filler long service life, reduction valve leakage and valve body internal pressure are stable.
Description
Technical field
The utility model relates to a kind of valve, is particularly applicable to the low-temperature brake valve of the technical fields such as oil, chemical industry, rock gas, heat supply, gaspipe network.
Background technique
The develop rapidly of global industry makes Subzero valve purposes more and more wider, and demand is also increasing.Subzero valve rigorous service condition, particularly at petroleum chemical industry, the medium of low temperature is not only inflammable and explosive, and also can gasify when temperature raises, volumetric expansion several times; In production, the loss of enterprise is not only in the leakage of cryogenic media, and some poison the harm that dielectric leakage also can cause environment and personnel health; So will definitely pay attention to for the leakage problem of Subzero valve, the specifically problem of leakage of Subzero valve.
Model utility content
The technical problems to be solved in the utility model is to provide a kind of structure low-temperature brake valve simple, easy to use.
For achieving the above object, the technical solution of the utility model is as follows:
A kind of low-temperature brake valve, comprise valve body, valve gap, valve rod, stuffing box, flashboard and bearing support, described valve gap is welded to form by bonnet and bottom flange, and described stuffing box is arranged on the inner side of bonnet; The top of described valve rod is provided with trapezoidal thread, and stem lower portion is set to T-type structure, and this T-type structure is fixedly mounted in T-slot that flashboard is offered, the processing step inclined-plane, middle part of valve rod, and it coordinates with cemented carbide bottom stuffing box; The bottom of stuffing box is provided with Packing seat, fills filler above Packing seat, and the top of filler is provided with filler pressing sleeve, and the top of filler pressing sleeve is provided with Gland, described bearing support with between bottom flange for being threaded, bearing support is arranged with bearing.
In an embodiment of the present utility model, the bottom of described stuffing box is provided with heap weld groove, pile-up welding hard alloy in heap weld groove.
In an embodiment of the present utility model, described low-temperature brake valve also comprises a pad, and described pad is arranged between valve body and valve gap.
In an embodiment of the present utility model, described bearing adopts PCTFE material to make, and it is arranged in inner hole of bearing seat, and the inner radius of bearing is provided with gas pressure relief slot.
In an embodiment of the present utility model, described Packing seat is ring, is provided with through hole in the middle part of it, interiorly during installation is enclosed within valve rod.
In an embodiment of the present utility model, described filler pressing sleeve is cylindrical shape, is provided with through hole in the middle part of it, is enclosed within valve rod during installation.
In an embodiment of the present utility model, disc with holes centered by described Gland, is enclosed within valve rod during installation.
In an embodiment of the present utility model, described low-temperature brake valve also comprises two symmetrically arranged swing bolts, and the screw portion of swing bolt is through Gland, and lower stomidium is connected with bonnet by bearing pin.
By technique scheme, the beneficial effects of the utility model are:
The utility model has valve rod stable performance, filler long service life, reduces the advantage of valve leakage out of steam system and valve inner pressure stability.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technological scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the utility model structural representation;
Fig. 2 is the utility model part-structure sectional view;
Numeral and the corresponding part title represented by letter in figure:
10, valve body 20, bonnet 30, bottom flange 40, valve rod 41, T-type structure 50, stuffing box 51, cemented carbide 52, Packing seat 53, filler 54, filler pressing sleeve 55, Gland 60, bearing support 61, bearing 70, flashboard 71, T-slot 80, swing bolt 81, screw portion 82, lower stomidium 83, nut.
Embodiment
The technological means realized to make the utility model, creation characteristic, reaching object and effect is easy to understand, below in conjunction with concrete diagram, setting forth the utility model further.
Shown in Fig. 1 and Fig. 2, the utility model discloses a kind of low-temperature brake valve, comprise valve body 10, valve gap, valve rod 40, stuffing box 50, flashboard 70 and bearing support 60, pad (not shown in FIG.) is provided with between valve body 10 and valve gap, valve gap is welded to form by bonnet 20 and bottom flange 30, stuffing box 50 is arranged on the inner side of bonnet 20, the bottom of stuffing box 50 is provided with heap weld groove, pile-up welding hard alloy 51 in heap weld groove, stuffing box 50 bottom is provided with endoporus, and endoporus machining screw adopts grinding to become cylindrical, has very high degree of finish and coaxality; Valve rod is round bar shape, its top is provided with trapezoidal thread, valve rod 40 bottom is set to T-type structure 41, this T-type structure 41 is fixedly mounted in T-slot 71 that flashboard 70 is offered, it opens and closes to drive flashboard 70 take off and landing strip movable valve by operated by handwheel band ovable valve stem 40, the processing step inclined-plane, middle part of valve rod 40 coordinates with cemented carbide 51 bottom stuffing box 50 and seals, and effectively can slow down cryogenic media to the erosion of filler, wearing and tearing, extend the working life of filler, in case of emergency, the replacing of filler can be carried out by standard-sized sheet valve; The bottom of stuffing box 50 is provided with ring Packing seat 52, and the middle part of Packing seat is provided with through hole, interiorly during installation is enclosed within valve rod 40; Fill filler 53 above Packing seat 52, filler adopts graphite folder Inconel silk to be filled in stuffing box; The top of filler 53 is provided with cylindrical shape filler pressing sleeve 54, and the middle part of filler pressing sleeve is provided with through hole, is enclosed within valve rod during installation; The top of filler pressing sleeve 54 is provided with Gland 55, disc with holes centered by Gland 55, to be enclosed within during installation on valve rod and to cover above filler pressing sleeve, Gland 55 is fixed by two symmetrically arranged swing bolts 80, swing bolt 80 comprises screw portion 81 and lower stomidium 82, the screw portion 81 of swing bolt is through Gland 55, and top is fixed by nut 83, and lower stomidium 82 is connected with bonnet 20 by bearing pin; Bearing support 60 is columnar structured, for being threaded between its with bottom flange 30, bearing support 60 inner sleeve bearing 61, bearing adopts PCTFE material, be mounted in inner hole of bearing seat, play a supporting role to valve rod, the object of support is to increase the stability of valve rod when opening and close, because Subzero valve is in use for ensureing that medium temperature valve rod can lengthen, its stability is caused to decline; The inner radius processing gas pressure relief slot of bearing, gas pressure relief slot can reduce the exception boosting of gasification space; The setting of bearing support and bearing strengthens the stability of valve rod greatly, increases the working life of valve.
After the utility model valve installation, in the middle part of valve rod, inclined-plane place and valve gap upper inner (namely bottom stuffing box) have individual sealing configuration, pinched together both when valve wide open, play seal action, reduce valve cavity pressure to the filler erosion in stuffing box, extend the working life of filler, reduce the possibility leaked outside.
Because valve applying working condition is low-temperature condition, so valve rod comparatively traditional valve some lengthening in structure length, for meeting its stability of extension valve rod, changing supporting form in the middle part of it, adding valve rod intermediate support, increasing its stability.
More than show and describe basic principle of the present utility model and major character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present utility model; under the prerequisite not departing from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (8)
1. a low-temperature brake valve, comprises valve body, valve gap, valve rod, stuffing box, flashboard and bearing support, it is characterized in that, described valve gap is welded to form by bonnet and bottom flange, and described stuffing box is arranged on the inner side of bonnet; The top of described valve rod is provided with trapezoidal thread, and stem lower portion is set to T-type structure, and this T-type structure is fixedly mounted in T-slot that flashboard is offered, the processing step inclined-plane, middle part of valve rod, and it coordinates with cemented carbide bottom stuffing box; The bottom of stuffing box is provided with Packing seat, fills filler above Packing seat, and the top of filler is provided with filler pressing sleeve, and the top of filler pressing sleeve is provided with Gland, described bearing support with between bottom flange for being threaded, bearing support is arranged with bearing.
2. a kind of low-temperature brake valve according to claim 1, is characterized in that, the bottom of described stuffing box is provided with heap weld groove, pile-up welding hard alloy in heap weld groove.
3. a kind of low-temperature brake valve according to claim 1, is characterized in that, described low-temperature brake valve also comprises a pad, and described pad is arranged between valve body and valve gap.
4. a kind of low-temperature brake valve according to claim 1, is characterized in that, described bearing adopts PCTFE material to make, and it is arranged in inner hole of bearing seat, and the inner radius of bearing is provided with gas pressure relief slot.
5. a kind of low-temperature brake valve according to claim 1, is characterized in that, described Packing seat is ring, is provided with through hole in the middle part of it, interiorly during installation is enclosed within valve rod.
6. a kind of low-temperature brake valve according to claim 1, is characterized in that, described filler pressing sleeve is cylindrical shape, is provided with through hole in the middle part of it, is enclosed within valve rod during installation.
7. a kind of low-temperature brake valve according to claim 1, is characterized in that, disc with holes centered by described Gland, is enclosed within valve rod during installation.
8. a kind of low-temperature brake valve according to claim 1, is characterized in that, described low-temperature brake valve also comprises two symmetrically arranged swing bolts, and the screw portion of swing bolt is through Gland, and lower stomidium is connected with bonnet by bearing pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520773098.4U CN205036875U (en) | 2015-09-30 | 2015-09-30 | Low -temperature brake valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520773098.4U CN205036875U (en) | 2015-09-30 | 2015-09-30 | Low -temperature brake valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205036875U true CN205036875U (en) | 2016-02-17 |
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ID=55295779
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520773098.4U Active CN205036875U (en) | 2015-09-30 | 2015-09-30 | Low -temperature brake valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205036875U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108533557A (en) * | 2018-07-02 | 2018-09-14 | 长沙理工大学 | A kind of control pressurer system |
| CN108825576A (en) * | 2018-07-02 | 2018-11-16 | 长沙理工大学 | A kind of operation method of control pressurer system |
-
2015
- 2015-09-30 CN CN201520773098.4U patent/CN205036875U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108533557A (en) * | 2018-07-02 | 2018-09-14 | 长沙理工大学 | A kind of control pressurer system |
| CN108825576A (en) * | 2018-07-02 | 2018-11-16 | 长沙理工大学 | A kind of operation method of control pressurer system |
| CN108533557B (en) * | 2018-07-02 | 2019-09-06 | 长沙理工大学 | A kind of control pressurer system |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |