CN205504024U - Two -way metal seal balanced type internals structure of telescoping valve - Google Patents
Two -way metal seal balanced type internals structure of telescoping valve Download PDFInfo
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- CN205504024U CN205504024U CN201620099918.0U CN201620099918U CN205504024U CN 205504024 U CN205504024 U CN 205504024U CN 201620099918 U CN201620099918 U CN 201620099918U CN 205504024 U CN205504024 U CN 205504024U
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Abstract
The utility model relates to a two -way metal seal balanced type internals structure, especially a two -way metal seal balanced type internals structure of telescoping valve belong to the technical field of governing valve. According to the utility model provides a technical scheme, two -way metal seal balanced type internals structure of telescoping valve, including the sleeve and can the case of sleeve internal motion, support the balanced ring seat that has coaxial distribution on the sleeve the cover has metallic sealing ring on the case, metallic sealing ring is located between case and balanced ring seat, metallic sealing ring's waist and balanced ring seat compress tightly the back to form the ring seat sealed, form case upper seal point and case lower seal point after the outer wall of metallic sealing ring and case compresses tightly respectively, case lower seal point, case upper seal point are located the sealed both sides of ring seat respectively. The utility model discloses compact structure seals up the effect, can make the telescoping valve both can bear the medium flow direction and be flowing the pressure when opening, also can bear the medium and flow into the pressure when closing for stream, and accommodation is wide, safe and reliable.
Description
Technical field
This utility model relates to a kind of bidirectional metal sealing equilibrated type inner parts structure, especially a kind of telescoping valve bidirectional metal sealing equilibrated type inner parts structure, belongs to the technical field of regulation valve.
Background technology
At present, in the industries such as chemical industry, iron and steel, metallurgy, oil, electric power, telescoping valve is applicable to the advantages such as High Pressure Difference operating mode, dynamic stability is high, actuator thrust requirements is little because of it so that it is be widely used in various occasions.Development and the innovation of technology along with the epoch, on-the-spot various operating modes get over complexity, the requirement of valve is improved by production technology the most day by day, wherein exist for High Temperature High Pressure difference operating mode, medium flows to the operating mode that in use may change because of technological requirement simultaneously, under this operating mode, it is necessary to valve can meet high temperature high voltage resistant requirement, can meet again the requirement of two way seal, and traditional telescoping valve be difficult to the most economical, reliably meet these requirements.Traditional telescoping valve inner parts structure is made up of spool, valve rod, the sleeve of band regulation window, spool has two kinds with the seal form of sleeve: one is to seal with two hard sealing surface structures, there are two sealing surfaces on this structure valve core and sleeve simultaneously, two sealing surfaces must be ensured simultaneously all to seal and can make valve seal, this kind of structure processing cost is high, sealing grade is low, maintenance, cost of overhaul height, and because high temperature action, greatly, High Pressure Difference operating mode easily makes valve produce concussion, control shakiness, valve stem crack etc. extremely for spool, cage guiding gap；The seal form of another kind of telescoping valve is that lower end uses hard sealing, upper end uses nonmetal sealing, such as the seal ring seal such as tetrafluoro, graphite, the processing request of part is reduced by this kind of mode, sealing grade is high, but because sealing ring material is nonmetallic materials, it is not suitable in some high temperature and medium the operating mode containing molecule.The most how from structure, solution telescoping valve is high temperature resistant, High Pressure Difference has again reliable and stable two way seal problem simultaneously, is a great problem of industry.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, a kind of telescoping valve bidirectional metal sealing equilibrated type inner parts structure is provided, its compact conformation, sealing effectiveness, telescoping valve can be made both can to have born medium and to flow to pressure when opening for stream, medium can also be born and flow to as flowing pressure when closing, wide accommodation, safe and reliable.
The technical scheme provided according to this utility model, described telescoping valve bidirectional metal sealing equilibrated type inner parts structure, including sleeve and the spool that can move in described sleeve；Described sleeve supports and has the balance ring seat of coaxial distribution, metallic packing ring is had at described valve core upper sleeve, described metallic packing ring is positioned between spool and balance ring seat, the waist of described metallic packing ring forms ring seat seal point after compressing with balance ring seat, metallic packing ring forms seal point and spool lower seal point on spool after the outer wall compression of spool respectively, and on described spool lower seal point, spool, seal point lays respectively at the both sides of ring seat seal point.
In metallic packing ring, it is provided with the lower energization spring for described metallic packing ring and spool being fitted tightly at spool lower seal point and is used for the upper energization spring described metallic packing ring and spool seal point on spool fitted tightly.
The cross section of described metallic packing ring is arcuately.
Described spool and balance ring seat are mounted in valve body, described valve body arranges valve gap, is provided with valve rod in described valve gap, fix and be connected in described valve rod penetrates spool and with described spool.
Advantage of the present utility model: metallic packing ring is positioned at balance ring seat and valve core chamber, utilizing metallic packing ring to form seal point and spool lower seal point on ring seat seal point, spool can make telescoping valve both can bear the pressure when medium flow direction is opened for stream, medium can also be born and flow to pressure when closing for stream, reach the ability of two way seal, because metallic packing ring and upper energization spring, lower energization spring are metal material, compare non-metallic material black box, it is applicable to the medium of higher temperature, and the medium containing little solid particle can be born；Metallic packing ring has pressure self-sealing performance, and after medium flows into metallic packing ring, metallic packing ring distending, pressure is the biggest, and sealing effectiveness is the best, and compact conformation is safe and reliable.
Accompanying drawing explanation
Fig. 1 is use view of the present utility model.
Fig. 2 is the enlarged drawing of A in Fig. 1.
Fig. 3 is this utility model medium sealing schematic diagram when the lower end stream of spool is opened.
Fig. 4 is this utility model medium sealing schematic diagram when the upper end of spool stream closes.
Description of reference numerals: energization spring, 4-2-upper energization spring, 5-metallic packing ring, 6-ring seat seal point, 7-bottom spool seal point, 8-upper valve core seal point, 9-valve body, 10-packing box assembly, 11-valve rod, 12-pressing plate, 13-follower bolt, 14-clamp sleeve and 15-valve gap under 1-sleeve, 2-spool, 3-balance ring seat, 4-1-.
Detailed description of the invention
Below in conjunction with concrete drawings and Examples, the utility model is described in further detail.
As depicted in figs. 1 and 2: in order to be able to both bear the pressure when medium flow direction is opened for stream so that telescoping valve, it is also possible to bearing medium and flow to pressure when closing for stream, this utility model includes sleeve 1 and the spool 2 that can move in described sleeve 1；Described sleeve 1 supports and has the balance ring seat 3 of coaxial distribution, described spool 2 is cased with metallic packing ring 5, described metallic packing ring 5 is positioned between spool 2 and balance ring seat 3, the waist of described metallic packing ring 5 forms ring seat seal point 6 after compressing with balance ring seat 3, metallic packing ring 5 forms seal point 8 and spool lower seal point 7 on spool after the outer wall compression of spool 2 respectively, and on described spool lower seal point 7, spool, seal point 8 lays respectively at the both sides of ring seat seal point 6.
Specifically, spool 2 contacts with the inwall of sleeve 1 in coaxial distribution, the outer wall of spool 2 with sleeve 1, and spool 2 can make upper and lower linear motion in sleeve 1.Balance ring seat 3 is supported on the top of sleeve 1, and metallic packing ring 5 is positioned at the bottom of balance ring seat 3, and metallic packing ring 5 is positioned at the upper end outside spool 2.When closing valve, the lower end of spool 2 is pressed into contact with the upper end in sleeve 1, thus forms hard sealing.On spool lower seal point 7, spool, seal point 8 is symmetric in the both sides of ring seat seal point 6.The outer wall of spool 2 is smooth tubular cylinder, spool lower seal point 7 is that the bottom of metallic packing ring 5 contacts the circulus formed with the outer circumferential walls of spool 2, and on spool, seal point 8 is that the top of metallic packing ring 5 contacts the circulus formed with the outer circumferential walls of spool 2.The sealing structure formed by seal point 8 on the ring seat seal point 6 of circulus, spool lower seal point 7 and spool, so that telescoping valve both can bear medium flows to pressure when opening for stream, it is also possible to bear medium and flow to pressure when closing for stream.
Further, in metallic packing ring 5, it is provided with the lower energization spring 4-1 for described metallic packing ring 5 and spool 2 being fitted tightly at spool lower seal point 7 and is used for the upper energization spring 4-2 described metallic packing ring 5 and spool 2 seal point 8 on spool fitted tightly.
In this utility model embodiment, the cross section of described metallic packing ring 5 is arcuately.Metallic packing ring 5 is between balance ring seat 3 and spool 2, metallic packing ring 5 around spool 2 in outer ring, lower energization spring 4-1, upper energization spring 4-2 are respectively positioned in metallic packing ring 5, lower energization spring 4-1, upper energization spring 4-2 are also looped around the outer ring of spool 2, utilize lower energization spring 4-1 can fasten the lower end of metallic packing ring 5 so that the lower end of metallic packing ring 5 more fits tightly with the outer wall of spool 2；In like manner, in utilization, energization spring 4-2 can fasten the lower end of metallic packing ring 5 so that the upper end of metallic packing ring 5 more can fit tightly with the outer wall of spool 2, can reach to strengthen seal point 8, the sealability of spool lower seal point 7 on spool.
Further, described spool 2 and balance ring seat 3 are mounted in valve body 9, described valve body 9 arranges valve gap 15, is provided with valve rod 11 in described valve gap 15, fix and be connected in described valve rod 11 penetrates spool 2 and with described spool 2.
Usually, spool 2, balance ring seat 3 are mounted in valve body 9, valve body 9 has medium inflow entrance and the medium flow export connected with described medium inflow entrance, by the spool 2 motion in sleeve 1, the adjustment to the connected state between medium inflow entrance, medium flow export can be realized, detailed process is that known to those skilled in the art, here is omitted.Valve gap 15 is connected by bolt etc. is fixing with valve body 9, and valve gap 15 is positioned at the surface balancing ring seat 3, utilizes valve gap 15 balance ring seat 3 to be pressed in valve body 9.Valve rod 11 and valve gap 15, balance ring seat 3 and spool 2 are in coaxial distribution.Top in valve gap 15 is provided with for airtight and watertight padding letter assembly 10, also includes the hold-down mechanism for compressing described packing box assembly 10.Described hold-down mechanism includes the clamping sleeve 14 being enclosed within valve rod 11, described clamping sleeve 14 is positioned at above packing box assembly 10, the lower end of clamping sleeve 14 contacts with packing box assembly 10, the upper end of clamping sleeve 14 contacts with pressure strip 12, and pressure strip 12 is fixedly supported on the top of valve gap 15 by hold-down bolt 13.
When after valve closing, described spool 2 lower end and described sleeve 1 lower end compress and form hard sealing, when medium flows to open for stream, as shown in Figure 3, medium is flowed into by metallic packing ring 5 lower end, by metallic packing ring 5 lower end distending, fasten metallic packing ring 5 lower end with energization spring 4-1 the most at present so that it is tighter with spool gluing, sealing.When medium flows to close for stream, as shown in Figure 4, medium is injected by metallic packing ring 5 upper end, by metallic packing ring 5 upper end distending, go up energization spring 4-2 to fasten metallic packing ring 5 upper end simultaneously, make it tighter with spool 2 gluing, sealing, such that it is able to seal two media flowed to, form bidirectional metal sealing.
Claims (4)
1. a telescoping valve bidirectional metal sealing equilibrated type inner parts structure, including sleeve (1) and the spool (2) that can move in described sleeve (1)；It is characterized in that: have the balance ring seat (3) of coaxial distribution upper support of described sleeve (1), described spool (2) is cased with metallic packing ring (5), described metallic packing ring (5) is positioned between spool (2) and balance ring seat (3), the waist of described metallic packing ring (5) forms ring seat seal point (6) after compressing with balance ring seat (3), metallic packing ring (5) forms seal point on spool (8) and spool lower seal point (7) after the outer wall compression of spool (2) respectively, described spool lower seal point (7), on spool, seal point (8) lays respectively at the both sides of ring seat seal point (6).
Telescoping valve bidirectional metal sealing equilibrated type inner parts structure the most according to claim 1, is characterized in that: be provided with the lower energization spring (4-1) for described metallic packing ring (5) and spool (2) being fitted tightly at spool lower seal point (7) in metallic packing ring (5) and for the upper energization spring (4-2) described metallic packing ring (5) and spool (2) seal point (8) on spool fitted tightly.
Telescoping valve bidirectional metal sealing equilibrated type inner parts structure the most according to claim 1 and 2, is characterized in that: the cross section of described metallic packing ring (5) is arcuately.
Telescoping valve bidirectional metal sealing equilibrated type inner parts structure the most according to claim 1, it is characterized in that: described spool (2) and balance ring seat (3) are mounted in valve body (9), valve gap (15) is set on described valve body (9), it is provided with valve rod (11) in described valve gap (15), fixes in described valve rod (11) penetrates spool (2) and with described spool (2) and be connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620099918.0U CN205504024U (en) | 2016-02-01 | 2016-02-01 | Two -way metal seal balanced type internals structure of telescoping valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620099918.0U CN205504024U (en) | 2016-02-01 | 2016-02-01 | Two -way metal seal balanced type internals structure of telescoping valve |
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| Publication Number | Publication Date |
|---|---|
| CN205504024U true CN205504024U (en) | 2016-08-24 |
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| CN201620099918.0U Active CN205504024U (en) | 2016-02-01 | 2016-02-01 | Two -way metal seal balanced type internals structure of telescoping valve |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105546135A (en) * | 2016-02-01 | 2016-05-04 | 无锡智能自控工程股份有限公司 | Two-way metal-sealed balanced type internal part structure for sleeve valve |
| CN108131455A (en) * | 2018-02-12 | 2018-06-08 | 无锡智能自控工程股份有限公司 | High Pressure Difference axial flow control valve |
-
2016
- 2016-02-01 CN CN201620099918.0U patent/CN205504024U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105546135A (en) * | 2016-02-01 | 2016-05-04 | 无锡智能自控工程股份有限公司 | Two-way metal-sealed balanced type internal part structure for sleeve valve |
| CN108131455A (en) * | 2018-02-12 | 2018-06-08 | 无锡智能自控工程股份有限公司 | High Pressure Difference axial flow control valve |
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