CN203477415U - Top-entry type ball valve - Google Patents
Top-entry type ball valve Download PDFInfo
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- CN203477415U CN203477415U CN201320543538.8U CN201320543538U CN203477415U CN 203477415 U CN203477415 U CN 203477415U CN 201320543538 U CN201320543538 U CN 201320543538U CN 203477415 U CN203477415 U CN 203477415U
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- ball valve
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Abstract
The utility model discloses a top-entry type ball valve and aims to provide the uploading type ball valve with sealing performance between valve seats and a ball valve spool improved and with the valve seat can be self-locked without increasing closing moment. According to the technical scheme, the top-entry type ball valve comprises a rotary handle, a valve body, a bonnet, the ball valve spool arranged in the valve, a valve stem used for driving the ball valve spool and a pair of valve seats arranged between the bonnet and a ball. One end of the valve stem is connected to the rotary handle, and the other end of the valve stem is connected with the ball valve spool. The valve seats are integrally provided with a clamping portion, the ball valve spool is provided with an annular groove, and the clamping portion is slidably matched in the annular groove, so that the valve seats can be self-locked. When subjected to higher fluid pressure, the valve seats cannot be displaced, so that the top-entry type ball valve is needless of increasing pressure springs and reducing ball valve structures, cost is saved, and adding of closing moment is omitted.
Description
Technical field
The utility model relates to valve technology field, more particularly: it relates to a kind of upper-mounting type ball valve.
Background technique
Upper-mounting type ball valve is widely used on oil and natural gas pipeline, and in the device such as oil recovery, oil refining, petrochemical industry, chemical industry, chemical fibre, electric power, nuclear power, food and papermaking.Upper-mounting type ball valve is dismantled rapidly simple on pipeline, easy to maintenance quick.When valve breaks down need to repair time on pipeline, needn't dismantle valve from pipeline, need only dismantle middle flange bolt and nut are taken off valve gap together with valve rod group component from valve body, then take out ball valve core and valve seat combination part.Can repair online ball valve core and valve seat.The time has been saved in this maintenance, loss in producing is reduced to minimum point, if although upper-mounting type ball valve keeps in repair the immovable words of structure between more convenient simple still valve seat and ball valve core sealing surface, maintenance or the unconfined waste of manpower of going down of meeting, material resources, cost of idleness.
Structure between current existing valve seat and the sealing surface of ball valve core as shown in Figure 3, the sealing surface of valve seat and ball valve core is the arc shaped surface of a section seldom, such sealing configuration in ball valve operates frequently because of wearing and tearing or a variety of causes such as collide with cause sealing surface cannot close contact, the maintenance causing that sealability declines, there is a technician to be often chosen in and on spheroid, to apply a Compress Spring for fear of above-mentioned situation, the effect of Compress Spring is on spheroid, to apply pretightening force, make under any circumstance close contact all of sealing surface of seat, good seal performance, simultaneously valve seat can also self-locking, in pipeline direction, when valve seat is subject to larger hydrodynamic pressure, valve seat can not produce any displacement yet, if but increase initial tension of spring, the whole moment of closing that adds ball valve is bound to, the strength that is not everyone is enough, so it is not applicable extensive yet, so the problem that wants to change between valve seat and the sealing surface of ball valve core also needs structurally to make an effort.
Model utility content
The deficiency existing for prior art, the purpose of this utility model is to provide a kind of sealability of strengthening between valve seat and ball valve core, and valve seat can self-locking not increase again the upper-mounting type ball valve of closing moment simultaneously.
For achieving the above object, the utility model provides following technological scheme: a kind of upper-mounting type ball valve, comprise rotatable handle, valve body, valve gap, be located at ball valve core in valve body, for driving the valve rod of ball valve core and being located at a pair of valve seat between described valve gap and ball valve core, described valve rod one end is connected on described rotatable handle, the other end is connected with described ball valve core, described valve seat has been wholely set inserted part, on described ball valve core, offer circular groove, described inserted part is slidably engaged in described circular groove.
By adopting technique scheme, valve seat one side heads on valve gap opposite side and coordinates in circular groove, make valve seat itself can realize self-locking, when valve seat is subject to larger hydrodynamic pressure, valve seat can not produce any displacement yet, without increasing Compress Spring, reduces ball-valve structure, without increase, closes moment again cost-saving time; When rotation rotatable handle, realize ball valve core with import and export when being communicated with or closing, a relative sliding can be done in inserted part in circular groove, and the sealing that the sealing between valve seat and ball valve core changes between inserted part and circular groove further improves sealability.
This practicality is further set to: conflict and be connected with primary sealing area, secondary sealing area, the 3rd sealing surface with described circular groove in surface, described inserted part.
By adopting technique scheme, the sealing surface that has changed traditional valve seat and ball valve core is the seldom sealing of arc shaped surface of a section, made to form between primary sealing area, secondary sealing area and the 3rd sealing surface the similar U-shaped sealing in cross section into, significantly promote sealing area and increased sealability, significantly reduced frequently in operation because of wearing and tearing or a variety of causes such as collide with cause sealing surface cannot close contact, the maintenance causing that sealability declines, has increased working life of ball valve.
This practicality is further set to: the outer sheathed stuffing box gland of described valve rod.
By adopting technique scheme, stuffing box gland guarantees valve stem seal, avoids because of the valve rod phenomenon that the flowing medium that causes leaks that moves up and down.
This practicality is further set to: the dismountable described valve body both sides that are fastened on of described valve gap.
By adopting technique scheme, valve gap, by the dismountable fastening valve body of bolt and nut both sides, guarantees that upper-mounting type ball valve is easy to maintenance when pinpointing the problems, cost-saving.
This practicality is further set to again: described primary sealing area, secondary sealing area, the 3rd sealing surface are by making for Hardmetal materials.
By adopting technique scheme, a kind of alloy material that cemented carbide is made by powder metallurgical technique by hard compounds and the binding metal of refractory metal, cemented carbide has that hardness is high, wear-resisting, intensity and a series of premium properties such as toughness is better, heat-resisting, corrosion-resistant, and sealing surface adopts Hardmetal materials can significantly promote the working life of ball valve.
Accompanying drawing explanation
Fig. 1 is the example structure schematic diagram of a kind of upper-mounting type ball valve of the utility model;
Fig. 2 is the schematic diagram that coordinates that the utility model improves rear valve base and ball valve core;
Fig. 3 is the existing valve seat of the utility model and the schematic diagram that coordinates of ball valve core;
Fig. 4 is the structural representation of the utility model ball valve core.
1-rotatable handle in figure, 2-valve body, 3-valve gap, 4-ball valve core, 41-circular groove, 5-valve rod, 6-valve seat, 7-primary sealing area, 8-secondary sealing area, 9-the 3rd sealing surface, 10-inserted part, 11-stuffing box gland.
Embodiment
Referring to figs. 1 through Fig. 4, the embodiment of a kind of upper-mounting type ball valve of the utility model is described further.
A kind of upper-mounting type ball valve, comprise rotatable handle 1, valve body 2, valve gap 3, be located at ball valve core 4 in valve body, for driving the valve rod 5 of ball valve core 4 and being located at a pair of valve seat 6 between described valve gap 3 and spherical ball core 4, described valve rod 5 one end are connected on described rotatable handle 1, the other end is flexibly connected with described ball valve core 4, described valve seat 6 has been wholely set inserted part 10, on described ball valve core 4, offer circular groove 41, described inserted part 10 is slidably engaged in described circular groove 41.
Conflict and be connected with primary sealing area 7, secondary sealing area 8, the 3rd sealing surface 9 with described circular groove 41 in 10 surfaces, described inserted part.
The sealing surface that above-mentioned design has changed traditional valve seat 6 and ball valve core 4 is the seldom sealing of arc shaped surface of a section, made to form between primary sealing area 7, secondary sealing area 8 and the 3rd sealing surface 9 the similar U-shaped sealing in cross section into, significantly promote sealing area and increased sealability, significantly reduced frequently in operation because of wearing and tearing or a variety of causes such as collide with cause sealing surface cannot close contact, the maintenance causing that sealability declines, has increased working life of ball valve.
The outer sheathed stuffing box gland 11 of described valve rod 5, above-mentioned technology stuffing box gland 11 guarantees valve rod 5 sealings, avoids because of valve rod 5 phenomenon that the flowing medium that causes leaks that moves up and down.
Dismountable described valve body 2 both sides that are fastened on of described valve gap 3, valve gap 3, by the dismountable fastening valve body of bolt and nut 2 both sides, guarantees that upper-mounting type ball valve is easy to maintenance pinpointing the problems, cost-saving.
Described primary sealing area 7, secondary sealing area 8, the 3rd sealing surface 9 are by making for Hardmetal materials.
A kind of alloy material that cemented carbide is made by powder metallurgical technique by hard compounds and the binding metal of refractory metal, cemented carbide has that hardness is high, wear-resisting, intensity and a series of premium properties such as toughness is better, heat-resisting, corrosion-resistant, and sealing surface adopts Hardmetal materials can significantly promote the working life of ball valve.
A kind of upper-mounting type ball valve above the utility model embodiment being provided is described in detail, and for one of ordinary skill in the art, the thought according to the utility model embodiment, all will change in specific embodiments and applications.In sum; this description should not be construed as restriction of the present utility model; other any any variation and modification of doing according to the constructed thought of the utility model and scope of patent protection or be equal to enforcement, is scope of patent protection of the present utility model and contains.
Claims (5)
1. a upper-mounting type ball valve, comprise rotatable handle, valve body, valve gap, be located at ball valve core in valve body, for drive the valve rod of ball valve core and be located at described valve gap and spherical ball core between a pair of valve seat, described valve rod one end is connected on described rotatable handle, the other end is connected with described ball valve core, it is characterized in that: described valve seat has been wholely set inserted part, on described ball valve core, offer circular groove, described inserted part is slidably engaged in described circular groove.
2. a kind of upper-mounting type ball valve according to claim 1, is characterized in that: conflict and be connected with primary sealing area, secondary sealing area, the 3rd sealing surface with described circular groove in surface, described inserted part.
3. a kind of upper-mounting type ball valve according to claim 1 and 2, is characterized in that: the outer sheathed stuffing box gland of described valve rod.
4. a kind of upper-mounting type ball valve according to claim 1 and 2, is characterized in that: the dismountable described valve body both sides that are fastened on of described valve gap.
5. a kind of upper-mounting type ball valve according to claim 2, is characterized in that: described primary sealing area, secondary sealing area, the 3rd sealing surface are by making for Hardmetal materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320543538.8U CN203477415U (en) | 2013-09-02 | 2013-09-02 | Top-entry type ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320543538.8U CN203477415U (en) | 2013-09-02 | 2013-09-02 | Top-entry type ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203477415U true CN203477415U (en) | 2014-03-12 |
Family
ID=50225746
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320543538.8U Expired - Fee Related CN203477415U (en) | 2013-09-02 | 2013-09-02 | Top-entry type ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203477415U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104315188A (en) * | 2014-10-16 | 2015-01-28 | 浙江大学 | Novel active seal ball valve |
| CN104948762A (en) * | 2015-06-19 | 2015-09-30 | 何祺晃 | Self-locking ball valve faucet |
-
2013
- 2013-09-02 CN CN201320543538.8U patent/CN203477415U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104315188A (en) * | 2014-10-16 | 2015-01-28 | 浙江大学 | Novel active seal ball valve |
| CN104315188B (en) * | 2014-10-16 | 2016-08-31 | 浙江大学 | Novel main moving sealed ball valve |
| CN104948762A (en) * | 2015-06-19 | 2015-09-30 | 何祺晃 | Self-locking ball valve faucet |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140312 Termination date: 20140902 |
|
| EXPY | Termination of patent right or utility model |