CN203836269U - Ultra-low-temperature no-friction top entry type fixing ball valve - Google Patents
Ultra-low-temperature no-friction top entry type fixing ball valve Download PDFInfo
- Publication number
- CN203836269U CN203836269U CN201420251368.0U CN201420251368U CN203836269U CN 203836269 U CN203836269 U CN 203836269U CN 201420251368 U CN201420251368 U CN 201420251368U CN 203836269 U CN203836269 U CN 203836269U
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- valve
- valve seat
- center line
- valve body
- valve rod
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Abstract
The utility model relates to an ultra-low-temperature no-friction top entry type fixing ball valve. The ball valve comprises a valve body, a valve seat, a valve rod, a valve deck, a ball body and a transmission device. The ball valve is characterized in that the valve rod and the ball body of the periphery of a lug shaft are respectively provided with one platform perpendicular to the center line of the valve rod, a pushing and separating mechanism is arranged between the platforms and the valve seat, the pushing and separating mechanism is composed of annular pushing rings fixedly installed on the portions, at the two ends of the ball body, of the platforms, a pushing block fixedly installed on the outer circle face of the valve seat, and a pin roller installed on the pushing block through a rotating shaft, the rotating shaft is parallel to the valve rod and is fixedly installed on the pushing block, a round hole in the center of the pin roller is in movable fit with the outer circle face of the rotating shaft, the center line of the pin roller is located on the plane where the center line of the valve rod and the center line of a valve body channel are located, the outer circle face of each annular pushing ring is provided with two arc grooves, the center of each arc groove is located on the plane which passes through the center line of the valve rod and is perpendicular to the center line of the ball body channel, and the arc radius of each arc groove is larger than that of the pin roller. In the opening and closing processes, friction between the ball body and the valve seat is avoided, abrasion of the sealing face is small, the sealing property is reliable, and the ball valve is suitable for working conditions with ultra-low-temperature media.
Description
Technical field
The utility model belongs to valve field, particularly about a kind of upper dress formula fixing ball valve.The utility model is applicable to the start-stop device of the media such as LNG Liquefied natural gas, steel-making use liquid oxygen and gaseous oxygen.
Background technique
Upper dress formula fixing ball valve is generally comprised of valve body, valve seat, valve rod, valve gap, spheroid, and valve body lumen has mount inlet, and spheroid upper end is fixedly connected with valve rod, and lower end is flexibly connected with valve body by gudgeon, and valve body is imported and exported and is respectively equipped with floating type valve seat.As filled formula fixing ball valve on the patent No. ultralow temperature that is CN201210369749, valve body and valve gap pass through Stud connection, the spheroid supporting axle processed of getting on or off the bus, lower support axle is fixed on valve body, and upper support axle is fixed on valve gap, and spheroid connects with one end of valve rod by rectangle groove, the other end of valve rod embeds the keyway of actuator, actuator and support are fixed, and actuator drives spheroid to rotate by valve rod, realize opening or closing of ball valve.Advantage of the present invention is to realize On line inspection and maintenance; Stack valve seat guarantees at ultralow temperature medium without any internal leakage; Valve gap adopts long-neck structure, guarantees that stuffing box position is in normal temperature state, prevents stuffing box frosting or freezes, and low leakage combined packing can normally be worked; Draining board is directly welded on valve gap lengthening section, prevents that valve gap top condensed water or rainwater from flowing into thermal insulation layer along valve gap lengthening section, has influence on heat insulation effect.Its major defect is in valve opening and closing process, and spheroid and sealing surface of seat are in contact with one another all the time, and the keying frictional force of sealing pair is large, large to sealing pair wearing and tearing, poor sealing performance.
Summary of the invention
The purpose of this utility model is the shortcoming existing for prior art, provides a kind of in valve opening and closing process, and spheroid and sealing surface of seat are without friction, and sealing pair wearing and tearing are little, and the ultralow temperature of good seal performance is without the upper dress formula fixing ball valve of friction.
The technical solution of the utility model comprises valve body, valve seat, valve rod, valve gap, spheroid, transmission device, valve body lumen has mount inlet, spheroid upper end is fixedly connected with valve rod, lower end is flexibly connected with valve body by gudgeon, valve body is imported and exported and is respectively equipped with floating type valve seat, and transmission device is installed on valve gap by long-neck support, mainly on the spheroid of valve rod and gudgeon periphery, to manufacture respectively the platform vertical with valve rod center line, between this platform and valve seat, be provided with and push away mechanism, this pushes away mechanism and pushes away circle by the annular fixedly mounting on the platform of spheroid two ends, the roller that is fixedly mounted on the pushing block of valve seat periphery and is arranged on pushing block by rotating shaft forms, rotating shaft is parallel with valve rod, be fixedly mounted on pushing block, roller center hole coordinates with rotating shaft periphery is moving, the center line of roller is in the plane at valve rod center line and valve channel center line place, annular pushes away on the periphery of circle and is shaped with two arc grooves, the central position of arc groove is being passed through in valve rod center line and the plane perpendicular to spheroid channel centerline, the radius of arc of arc groove is greater than the radius of roller.
In above technological scheme, between the valve seat back side and valve channel, adopt U-shaped combination sealing arrangement, in the U-shaped groove of described U-shaped combination sealing arrangement for the ring packing frame in U-shaped cross section, seal ring is installed; U-shaped combination sealing arrangement between its suction side valve seat back side and valve channel adopts DBB structure, and ring packing frame adopts unidirectional U-shaped groove, and seal ring is installed in U-shaped groove, opening towards valve channel importer to; U-shaped combination sealing arrangement between the outlet side valve seat back side and valve channel adopts DIB structure, and ring packing frame adopts two-way U-shaped groove, in the U-shaped groove in both sides, seal ring is installed respectively.
In above technological scheme, between the spring pad of floating type valve seat and valve seat periphery, valve channel inwall, C type metal o-ring is installed, its opening is towards valve pocket.
The utility model has the advantages that between spheroid and valve seat and arrange and push away mechanism, in spheroid opening-closing process, the annular that pushes away mechanism pushes away circle, by roller, pushing block, valve seat is pushed away to ball seal face, spheroid sealing surface of seat is departed from, when spheroid and valve seat closed condition, roller embeds annular and pushes away in the arc groove of circle, spheroid and the sealing of sealing surface of seat compression fit, opening-closing process spheroid and valve seat are without friction, and its sealing surface wear is few, sealability is reliable.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the partial structurtes enlarged view at A place in the utility model Fig. 1.
Fig. 3 is the partial structurtes enlarged view at B place in the utility model Fig. 1.
Embodiment
Ultralow temperature is as shown in Figure 1 without the upper dress formula fixing ball valve of friction, comprise valve body 1, valve seat 11, valve rod 5, valve gap 4, spheroid 3, transmission device, valve body 1 lumen has mount inlet, make spheroid 3, valve seat 11 pack valve body 1 inner chamber into from this mount inlet, spheroid 3 upper ends are fixedly connected with valve rod 5, lower end is flexibly connected with valve body 1 by gudgeon 2, and valve body 1 is imported and exported and is respectively equipped with floating type valve seat, and transmission device is installed on valve gap 4 by long-neck support 6; On the spheroid 3 of valve rod 5 and gudgeon 2 peripheries, manufacture respectively the platform vertical with valve rod 5 center lines, between this platform and valve seat 11, be provided with and push away mechanism, this pushes away mechanism and pushes away circle 13, is fixedly mounted on the pushing block 15 of valve seat 11 peripheries and the roller 16 that is arranged on pushing block 15 by rotating shaft forms by fixedly mounting annular on the platform of spheroid two ends, as shown in Figure 2.Rotating shaft is parallel with valve rod 5, be fixedly mounted on pushing block 15, roller 16 center holes coordinate with rotating shaft periphery is moving, can in rotating shaft, rotate, the center line of roller 16 is in the plane at valve rod 5 center lines and valve body 1 channel centerline place, annular pushes away on the periphery that encloses 13 and is shaped with two arc grooves, the central position of arc groove is being passed through in valve rod 5 center lines and the plane perpendicular to spheroid 3 channel centerlines, the radius of arc of arc groove is greater than the radius of roller 16, make annular in spheroid 3 opening-closing processes push away circle 13 by roller 16, pushing block 15 pushing block valve seats 11, make the sealing surface of valve seat 11 leave spheroid 3, realizing sealing pair opens and closes without friction, and when spheroid 3 rotates to valve seat 11 in closed condition, roller 16 embeds annular and pushes away in the arc groove that encloses 13, spheroid 3 contacts with valve seat 11 sealings.Annular pushes away circle can evenly arrange four arc grooves on 13 peripheries, makes spheroid 3 and valve seat 11 all in sealing, contact cooperation at standard-sized sheet during with full cut-off.Soft seal circle 12 is installed in valve seat 11 sealing surfaces, is made valve seat 11 and spheroid 3 form hard, soft double sealing structure.
Between valve seat 11 back sides and valve body 1 passage, adopt U-shaped combination sealing arrangement, in the U-shaped groove of described U-shaped combination sealing arrangement for the ring packing frame 14 in U-shaped cross section, seal ring 7 is installed; U-shaped combination sealing arrangement between its suction side valve seat 11 back sides and valve body 1 passage adopts DBB structure, be that ring packing frame 14 adopts unidirectional U-shaped groove, seal ring 7 is installed in U-shaped groove, opening is towards valve body 1 channel entrance direction, the valve body 1 inner chamber abnormal pressure of can releasing, prevent that valve body 1 inner chamber abnormal pressure from damaging valve body 1, as shown in Figure 2; U-shaped combination sealing arrangement between outlet side valve seat 11 back sides and valve body 1 passage adopts DIB structure, and ring packing frame 14 adopts two-way U-shaped groove, in the U-shaped groove in both sides, seal ring 7 is installed respectively, forms valve seat 11 bis-road sealings, as shown in Figure 3.Seal ring 7 forms piston structure in the U-shaped groove of ring packing frame 14.Seal ring 7, ring packing frame 14 adopt the roll forming of PCTFE material, have resistance to low temperature.
Between the spring pad 9 of floating type valve seat and valve seat 11 peripheries, valve body 1 vias inner walls, C type metal o-ring 10 is installed, its opening, towards valve pocket, meets fire proof seal function.Spring 8 be arranged in spring pad 9 and valve body 1 passage radially between step.
Claims (3)
1. a ultralow temperature is without the upper dress formula fixing ball valve of friction, comprise valve body (1), valve seat (11), valve rod (5), valve gap (4), spheroid (3), transmission device, valve body (1) lumen has mount inlet, spheroid (3) upper end is fixedly connected with valve rod (5), lower end is flexibly connected with valve body (1) by gudgeon (2), valve body (1) is imported and exported and is respectively equipped with floating type valve seat, and transmission device is installed on valve gap (4) by long-neck support (6), it is characterized in that manufacturing respectively the platform vertical with valve rod (5) center line on the spheroid (3) of valve rod (5) and gudgeon (2) periphery, between this platform and valve seat (11), be provided with and push away mechanism, this pushes away mechanism and pushes away circle (13) by the annular fixedly mounting on the platform of spheroid two ends, the roller (16) that is fixedly mounted on the pushing block (15) of valve seat (11) periphery and is arranged on pushing block (15) by rotating shaft forms, rotating shaft is parallel with valve rod (5), be fixedly mounted on pushing block (15), roller (16) center hole coordinates with rotating shaft periphery is moving, the center line of roller (16) is in the plane at valve rod (5) center line and valve body (1) channel centerline place, annular pushes away on circle (13) periphery and is shaped with two arc grooves, arc groove central position is being passed through in valve rod (5) center line and the plane perpendicular to spheroid (3) channel centerline, its radius of arc is greater than roller (16) radius.
2. ultralow temperature according to claim 1 is without the upper dress formula fixing ball valve of friction, it is characterized in that adopting U-shaped combination sealing arrangement between valve seat (11) back side and valve body (1) passage, described U-shaped combination sealing arrangement is that seal ring (7) is installed in the U-shaped groove of the ring packing frame (14) in U-shaped cross section; U-shaped combination sealing arrangement between its suction side valve seat (11) back side and valve body (1) passage adopts DBB structure, be that ring packing frame (14) adopts unidirectional U-shaped groove, seal ring (7) is installed in U-shaped groove, and opening is towards valve body (1) channel entrance direction; U-shaped combination sealing arrangement between outlet side valve seat (11) back side and valve body (1) passage adopts DIB structure, and ring packing frame (14) adopts two-way U-shaped groove, and seal ring (7) is installed respectively in the U-shaped groove in both sides.
3. ultralow temperature according to claim 1 and 2 is without the upper dress formula fixing ball valve of friction, it is characterized in that, between spring pad (9) at floating type valve seat and valve seat (11) periphery and valve body (1) vias inner walls, C type metal o-ring (10) is installed, its opening is towards valve pocket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420251368.0U CN203836269U (en) | 2014-05-04 | 2014-05-04 | Ultra-low-temperature no-friction top entry type fixing ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420251368.0U CN203836269U (en) | 2014-05-04 | 2014-05-04 | Ultra-low-temperature no-friction top entry type fixing ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203836269U true CN203836269U (en) | 2014-09-17 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420251368.0U Expired - Fee Related CN203836269U (en) | 2014-05-04 | 2014-05-04 | Ultra-low-temperature no-friction top entry type fixing ball valve |
Country Status (1)
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| CN (1) | CN203836269U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103953745A (en) * | 2014-05-04 | 2014-07-30 | 环球阀门集团有限公司 | Ultra-low-temperature friction-free upper mounting type fixed ball valve |
| CN106051202A (en) * | 2016-08-12 | 2016-10-26 | 西玛克（厦门）阀门有限公司 | Multifunctional friction-free fixed short ball valve and use method thereof |
| CN106523729A (en) * | 2015-09-10 | 2017-03-22 | 中国石油天然气集团公司 | Low-temperature top-assembling type fixed ball valve |
| CN108561579A (en) * | 2018-03-19 | 2018-09-21 | 江苏神通阀门股份有限公司 | A kind of valve seat detaching structure of the metal sealing fixing ball valve sealing pair without relative motion |
| CN113154076A (en) * | 2021-04-01 | 2021-07-23 | 浙江上工阀门有限公司 | High-safety high-frequency novel high-pressure fixed ball valve with reliable sealing performance by quick opening and closing |
| CN113565981A (en) * | 2021-07-27 | 2021-10-29 | 方正阀门集团股份有限公司 | High-temperature hard-sealing floating ball valve with manual self-adjusting function |
-
2014
- 2014-05-04 CN CN201420251368.0U patent/CN203836269U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103953745A (en) * | 2014-05-04 | 2014-07-30 | 环球阀门集团有限公司 | Ultra-low-temperature friction-free upper mounting type fixed ball valve |
| CN106523729A (en) * | 2015-09-10 | 2017-03-22 | 中国石油天然气集团公司 | Low-temperature top-assembling type fixed ball valve |
| CN106051202A (en) * | 2016-08-12 | 2016-10-26 | 西玛克（厦门）阀门有限公司 | Multifunctional friction-free fixed short ball valve and use method thereof |
| CN108561579A (en) * | 2018-03-19 | 2018-09-21 | 江苏神通阀门股份有限公司 | A kind of valve seat detaching structure of the metal sealing fixing ball valve sealing pair without relative motion |
| CN113154076A (en) * | 2021-04-01 | 2021-07-23 | 浙江上工阀门有限公司 | High-safety high-frequency novel high-pressure fixed ball valve with reliable sealing performance by quick opening and closing |
| CN113565981A (en) * | 2021-07-27 | 2021-10-29 | 方正阀门集团股份有限公司 | High-temperature hard-sealing floating ball valve with manual self-adjusting function |
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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: 20140917 |
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| CF01 | Termination of patent right due to non-payment of annual fee |