CN2867000Y

CN2867000Y - High temperature resisting insulation ball valve

Info

Publication number: CN2867000Y
Application number: CN 200520037874
Authority: CN
Inventors: 陈焕良; 王志中; 孙焕祥; 罗苑林
Original assignee: MINGZHU GROUP CO Ltd GUANGDONG PROV
Current assignee: MINGZHU GROUP CO Ltd GUANGDONG PROV
Priority date: 2005-12-29
Filing date: 2005-12-29
Publication date: 2007-02-07
Anticipated expiration: 2015-12-29

Abstract

The utility model involves a thermostable and thermal insulation ball valve: the housing of the ball valve comprises the valve body and jacket, a valve link is mounted on the center channel on the top of the valve body, the upside of the valve link is connected with the driving device and the downside of the valve link is connected with a spheroid, the center channel of the valve body is filled with filler, a liner and roll steel is mounted on the top of the filler. The valve body is filled with a spheroid, a valve seat, a gripper ring and a collar seal, and the piping is mounted on the jacket. The present utility model is characterized in that, a flute is arranged on the valve body and the gripper ring, a seal cavity is formed between the valve body and the gripper ring, the collar seal is mounted in the seal cavity, a baling with prick cross-section is provided at the back of the collar seal and a plug screw is mounted at the back of the baling, a metal valve seat is arranged on the adjusting shim. The performance criterion of the utility model comes up to the national standard, the durability is more than 20 thousand times when the temperature is below 425DEG C, and thereby the ball valve meets the first-rate according to the quality grading criterion of JB/TQ409. The utility model is suitable for the isothermal condition which needs high temperature, for example, the special condition that the colophony agent is needed.

Description

The high-temperature-resistant thermal-insulation ball valve

Technical field

The utility model relates to the ball valve of a kind of ball valve, particularly a kind of high-temperature-resistant thermal-insulation.

Background technique

At present, existing Thermal insulating ball valve is because of being subjected to the restriction of valve sealing structure and corresponding sealing material thereof, and the temperature of its adaptation is less than 200 ℃, if use under 200 ℃ operating mode for a long time, working life is then shorter.Though valve seat can be selected the high strength graphite material of 300 ℃ of temperature of short time ability for use, but the positions that also have many needs to seal in the valve can't be at high temperature occasion lower seal, particularly radial seal, high strength graphite material discomfort is fit to do radial seal, the seal with O ring structure is adopted in the Thermal insulating ball valve radial seal usually, and this Thermal insulating ball valve serviceability temperature directly is subjected to the influence of O shape circle heatproof.Because the O shape circle that uses on the Thermal insulating ball valve at present is a fluorine rubber, and the serviceability temperature of fluorine rubber is in 200 ℃, so can not use in 200 ℃ for a long time.

Summary of the invention

The purpose of this utility model just provide a kind of can be at 425 ℃ of Thermal insulating ball valves with interior long-time use.

The utility model can be realized by following mode: valve body and chuck are formed the shell of ball valve, valve rod is contained on the mesopore on valve body top, the valve rod upper end is connected with drive unit, the valve rod lower end is connected with spheroid, in the mesopore of valve body filler is housed, lining ring is housed above the filler and rolls orchid, spheroid is housed in the valve body, valve seat, bearing ring and seal ring, adapter is contained on the chuck, and is fluted on described valve body and the bearing ring, forms Seal cage between bearing ring and the valve body, seal ring is housed in the Seal cage, the packing ring in band awl cross section is equipped with in the seal ring back, and plug screw is equipped with in the packing ring back, and metal seat valve is housed above the spacer.

Described drive unit is manual operating device, worm gearing, pneumatic actuating device or electric performance device.

Described seal ring is to make with the braiding Expanded graphite.

Described spacer is to make with Expanded graphite.

The requirement that every performance index of the present utility model all can be up to state standards, the regulation that meets GB GB/T13927 as sealability, 425 ℃ with interior worst hot case under, working life is greater than 20,000 times, meets the high-class product of ball valve quality grading standard JB/TQ409 regulation.The utility model is applicable to be needed to adopt the soak condition, as the occasion of special operation conditions such as rosin medium.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the structural representation of worm gearing for the utility model drive unit.

Fig. 3 is the structural representation of pneumatic actuating device for the utility model drive unit.

Fig. 4 is the structural representation of electric performance device for the utility model drive unit.

In the drawings, valve body 1, chuck 2, spacer 3, spheroid 4, valve seat 5, valve rod 6, filler 7, lining ring 8 rolls orchid 9, positioning block 10, handle device 11, seal ring 12, packing ring 13, plug screw 14, bearing ring 15 takes over 16, plug 17, worm gearing 18, pneumatic actuating device 19, electric performance device 20.

Embodiment

Below in conjunction with embodiment and accompanying drawing, the utility model will be further described.

Embodiment one

Please read Fig. 1, valve body 1 and chuck 2 are formed the shell of ball valves, valve rod 6 is contained on the mesopore on valve body 1 top, valve rod 6 upper ends are connected with drive unit, drive unit is a handle device 11, and valve rod 6 lower ends are connected with spheroid 4, and resistant to elevated temperatures braiding flexible graphite packing 7 is housed in the mesopore of valve body 1, lining ring 8 is housed above the braiding flexible graphite packing 7 and rolls orchid 9, form adjustable compressing structure.Above rolling blue 9 positioning block 10 is housed, plays the role of positioning during the ball valve switch.Spheroid 4, valve seat 5, spacer 3, bearing ring 15 and seal ring 12 are housed in the valve body 1, packing ring 13 and the high temperature resistant radial seal structure of plug screw 14 common compositions also are housed simultaneously.Take over 16 front and back and the bottoms that directly are welded in chuck 2, front and back are taken over 16 and are connected with pipe-line system, are used to pass in and out thermal insulation medium, and bottom adapter screw-in plug 17 plays the effect of drainage.

Valve body 1 and bearing ring 15 are dug out groove, make between bearing ring 15 and the valve body 1 and form Seal cage, in Seal cage, load onto the resistant to elevated temperatures seal ring made from the braiding Expanded graphite 12, on spacer 3, load onto resistant to elevated temperatures metal seat valve, metal seat valve can be a stainless steel built-up welding stellite etc., serviceability temperature can be brought up to 425 ℃ with interior long-time use, and can select the valve seat of unlike material according to the requirement of actual conditions for use.Spacer 3 is to make with Expanded graphite, and it can play the seal action of valve seat 5 bottoms, can play the compensating action because of expanding with heat and contract with cold between each sealing pair again.The packing ring 13 in band awl cross section is installed in seal ring 12 back, and packing ring 13 back are equipped with plug screw 14.By screwing plug screw 14, plug screw 14 passes to packing ring 13 with power, the awl cross section of packing ring 13 is with crush seal circle 12, make it inside and outside radially, be adjacent to bearing ring 15 and valve body 1, thereby make the utility model radially obtain resistant to elevated temperatures sealing configuration, simultaneously, also can make generation pretension sealing force between spheroid 4 and the valve seat 5, make it obtain sealing by screwing plug screw 14.

When the utility model was done switch motion, the handle in the manual operating device 11 only needed half-twist, the clockwise direction rotation, and ball valve is made closing motion; Rotation counterclockwise, ball valve is made breakdown action.When the handle axis direction was parallel with the axial direction of ball valve, ball valve was in full-gear; When the axial direction of handle axis direction and ball valve was vertical, ball valve was in closed condition.

Embodiment two

Please read Fig. 2, the utility model drive unit is a worm gearing 18, concrete structure be connected with embodiment one basic identical, just do not need positioning block 10.

When the utility model was done switch motion, the handwheel in the rotation worm gearing 18 can be realized the switch motion of ball valve.

Embodiment three

Please read Fig. 3, the utility model drive unit is pneumatic actuating device 19, concrete structure be connected with embodiment one basic identical, just do not need positioning block 10.

When the utility model is done switch motion,, can drive ball valve and realize switch motion by the suction port in the pneumatic actuating device 19 is added pressed gas.

Embodiment four

Please read Fig. 4, the utility model drive unit is an electric performance device 20, concrete structure be connected with embodiment one basic identical, just do not need positioning block 10.

When the utility model is done switch motion,, can drive ball valve and realize switch motion by to electric performance device 20 energisings.

Claims

1, a kind of high-temperature-resistant thermal-insulation ball valve, valve body (1) and chuck (2) are formed the shell of ball valve, valve rod (6) is contained on the mesopore on valve body (1) top, valve rod (6) upper end is connected with drive unit, valve rod (6) lower end is connected with spheroid (4), filler (7) is housed in the mesopore of valve body (1), lining ring (8) is housed above the filler (7) and rolls orchid (9), spheroid (4) is housed in the valve body (1), valve seat (5), bearing ring (15) and seal ring (12), taking over (16) is contained on the chuck (2), it is characterized in that valve body (1) and bearing ring (15) are upward fluted, form Seal cage between bearing ring (15) and the valve body (1), seal ring (12) is housed in the Seal cage, the packing ring (13) in band awl cross section is equipped with in seal ring (12) back, plug screw (14) is equipped with in packing ring (13) back, and spacer is equipped with metal seat valve above (3).

2, high-temperature-resistant thermal-insulation ball valve according to claim 1 is characterized in that described drive unit is manual operating device (11), worm gearing (18), pneumatic actuating device (19) or electric performance device (20).

3, high-temperature-resistant thermal-insulation ball valve according to claim 1 is characterized in that described seal ring (12) is to make with the braiding Expanded graphite.

4, high-temperature-resistant thermal-insulation ball valve according to claim 1 is characterized in that described spacer (3) is to make with Expanded graphite.