CN104712784A - Low-temperature pneumatic ball valve - Google Patents
Low-temperature pneumatic ball valve Download PDFInfo
- Publication number
- CN104712784A CN104712784A CN201510114336.5A CN201510114336A CN104712784A CN 104712784 A CN104712784 A CN 104712784A CN 201510114336 A CN201510114336 A CN 201510114336A CN 104712784 A CN104712784 A CN 104712784A
- Authority
- CN
- China
- Prior art keywords
- valve
- valve rod
- spheroid
- insertion ring
- low temperature
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
- F16K5/0663—Packings
- F16K5/0694—Spindle sealings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/08—Details
- F16K5/14—Special arrangements for separating the sealing faces or for pressing them together
- F16K5/20—Special arrangements for separating the sealing faces or for pressing them together for plugs with spherical surfaces
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Valve Housings (AREA)
Abstract
The invention relates to a low-temperature pneumatic ball valve. The low-temperature pneumatic ball valve comprises a valve deck and a valve rod, wherein the valve rod is arranged in the valve deck in a rotary mode, a sealing cavity is formed in the upper end of the valve deck, the upper end of the valve rod stretches out of the sealing cavity, the portion, in the sealing cavity, of the valve rod is sleeved with a filler ring used for sealing the valve rod and the valve deck, a locking nut used for limiting the position of the filler ring is arranged at the upper end of the filler ring, the filler ring comprises a ring body, and a circular V-shaped groove is formed in the side wall of the ring body. Due to the design of the V-shaped groove in the side wall of the filler ring, friction moment between the filler ring and the valve rod is smaller during sealing.
Description
Technical field
The present invention relates to a kind of low temperature pneumatic ball valve.
Background technique
In the filler pipe of LNG filling machine, need to use cold-starting ball valve, it mainly plays the effect cut off and connect pipeline, the defect that traditional, pneumatic ball valve exists is that output torque is little, take up room large, heavy, and long-time use easily causes the phenomenon of leakage at low ambient temperatures, there is potential safety hazard.
Summary of the invention
The technical problem to be solved in the present invention is: overcome the deficiencies in the prior art, provides a kind of low temperature pneumatic ball valve.
The technical solution adopted for the present invention to solve the technical problems is: a kind of low temperature pneumatic ball valve, comprises valve gap and valve rod, and described valve rod rotates and is arranged in valve gap, and the upper end of described valve gap forms Seal cage, and Seal cage is stretched out in the upper end of described valve rod; Valve rod in described Seal cage is socketed with the insertion ring for sealed valve stem and valve gap, the upper end of described insertion ring is provided with the locking nut for limiting insertion ring position;
Described insertion ring comprises circle body, and the sidewall of described circle body forms a circle V-shaped groove, and circle body is divided into epivalve and hypovalve by this V-shaped groove.
Further, the upper-end surface of described insertion ring epivalve and the lower end surface of insertion ring hypovalve form the conical seal (contact) face of indent respectively.
Further, the valve rod of described insertion ring lower end is socketed with packing ring, the valve rod between described insertion ring and locking nut is socketed with pressure ring and the first butterfly spring, described first butterfly spring is positioned at above pressure ring.
Further, the upper end of described locking nut is provided with lid, and the valve rod of described lid upper end is provided with floor clip.
Further, the upper end of described valve gap is provided with the pneumatic actuator for rotating with ovable valve stem, described pneumatic actuator through support installing in valve rod upper end, through coupling shaft connection for transmission between the output terminal of described pneumatic actuator and the upper end of valve rod.
Further, described pneumatic actuator is four cylinder final controlling element.
Further, the lower end of described valve gap is provided with valve body, is provided with snout cavity, spheroid chamber and outlet plenum in described valve body, and be provided with spheroid in described spheroid chamber, described spheroid is connected with the lower end of valve rod;
Described spheroid and spheroid chamber are provided with and export ball and serve as a contrast between the inwall of outlet plenum side, and described spheroid and spheroid chamber are provided with inlet ball and serve as a contrast between the inwall of snout cavity side, are provided with the second butterfly spring between described inlet ball lining and spheroid cavity wall.
The invention has the beneficial effects as follows: insertion ring relies on the design of V-shaped groove of sidewall, ensure insertion ring when sealing and the friction torque of valve rod less.
Rely on four cylinder starters, make pneumatic ball valve obtain larger output torque, and reduce to take up room, action is also more flexible.
Rely on the second butterfly spring arranged, inlet ball can be made to serve as a contrast and obtain certain elastic compensating, pneumatic ball valve be sealed at low ambient temperatures more reliable.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is further described.
Fig. 1 is the schematic diagram of pneumatic ball valve of the present invention;
Fig. 2 is the enlarged view at A place in Fig. 1;
Fig. 3 is the schematic diagram of insertion ring;
Wherein, 1, valve gap, 2, valve rod, 3, insertion ring, 31, circle body, 32, V-shaped groove, 4, locking nut, 5, packing ring, 6, pressure ring, 7, the first butterfly spring, 8, floor clip, 9, pneumatic actuator, 10, support, 11, valve body, 12, spheroid, 13, inlet ball lining, 14, outlet ball lining, the 15, second butterfly spring.
Embodiment
The present invention is further illustrated in conjunction with specific embodiments now.The schematic diagram that these accompanying drawings are simplification only illustrates basic structure of the present invention in a schematic way, and therefore it only shows the formation relevant with the present invention.
As shown in Fig. 1 Fig. 2 Fig. 3, a kind of low temperature pneumatic ball valve, comprises valve gap 1 and valve rod 2, and valve rod 2 rotates and is arranged in valve gap 1, and the upper end of valve gap 1 forms Seal cage, and Seal cage is stretched out in the upper end of valve rod 2; Valve rod 2 in Seal cage is socketed with the insertion ring 3 for sealed valve stem 2 and valve gap 1, the upper end of insertion ring 3 is provided with the locking nut 4 for limiting insertion ring 3 position.
Insertion ring 3 comprises circle body 31, and the sidewall of circle body 31 forms a circle V-shaped groove 32, and circle body 31 is divided into epivalve and hypovalve by this V-shaped groove 32; Insertion ring 3 relies on the design of the V-shaped groove 32 of sidewall, makes, and during insertion ring 3 pressurized, epivalve, hypovalve are by horizontal expansion during upper and lower pressure extrusion, and then oppose side wall forms good sealing, ensure insertion ring 3 when sealing and the friction torque of valve rod 2 less; Meanwhile, for improving the sealing of insertion ring 3 upper and lower end, the upper-end surface of insertion ring 3 epivalve and the lower end surface of insertion ring 3 hypovalve form the conical seal (contact) face of indent respectively.
For better limiting filler, the valve rod 2 of insertion ring 3 lower end being socketed with packing ring 5, the valve rod 2 between insertion ring 3 and locking nut 4 being socketed with pressure ring 6 and the first butterfly spring 7, first butterfly spring 7 is positioned at above pressure ring 6.
The upper end of locking nut 4 is provided with lid, and the valve rod 2 of lid upper end is provided with floor clip 8.The effect of lid mainly prevents locking nut 4 from loosening, and floor clip 8 is mainly for by lid limit value valve rod 2.
The upper end of valve gap 1 is provided with the pneumatic actuator 9 for rotating with ovable valve stem 2, and pneumatic actuator 9 is arranged on valve rod 2 upper end through support 10, through coupling shaft connection for transmission between the output terminal of described pneumatic actuator 9 and the upper end of valve rod 2.Pneumatic actuator 9 is four cylinder final controlling element.Rely on four cylinder starters, make pneumatic ball valve obtain larger output torque, and reduce to take up room, action is also more flexible.
The lower end of valve gap 1 is provided with valve body 11, and be provided with snout cavity, spheroid chamber and outlet plenum in valve body 11, be provided with spheroid 12 in spheroid chamber, spheroid 12 is connected with the lower end of valve rod 2; Spheroid 12 and spheroid chamber are provided with and export ball and serve as a contrast 14 between the inwall of outlet plenum side, and spheroid 12 and spheroid chamber are provided with inlet ball and serve as a contrast 13 between the inwall of snout cavity side, are provided with the second butterfly spring 15 between inlet ball lining 13 and spheroid cavity wall.Rely on the second butterfly spring 15 arranged, inlet ball can be made to serve as a contrast 13 and obtain certain elastic compensating, pneumatic ball valve be sealed at low ambient temperatures more reliable.
With above-mentioned according to desirable embodiment of the present invention for enlightenment, by above-mentioned description, relevant staff in the scope not departing from this invention technological thought, can carry out various change and amendment completely.The technical scope of this invention is not limited to the content on specification, must determine its technical scope according to right.
Claims (7)
1. a low temperature pneumatic ball valve, it is characterized in that, comprise valve gap (1) and valve rod (2), described valve rod (2) rotates and is arranged in valve gap (1), the upper end of described valve gap (1) forms Seal cage, and Seal cage is stretched out in the upper end of described valve rod (2); Valve rod (2) in described Seal cage is socketed with the insertion ring (3) for sealed valve stem (2) and valve gap (1), the upper end of described insertion ring (3) is provided with the locking nut (4) for limiting insertion ring (3) position;
Described insertion ring (3) comprises circle body (31), and the sidewall of described circle body (31) forms circle V-shaped groove (32), and circle body (31) is divided into epivalve and hypovalve by this V-shaped groove (32).
2. a kind of low temperature pneumatic ball valve according to claim 1, is characterized in that, the upper-end surface of described insertion ring (3) epivalve and the lower end surface of insertion ring (3) hypovalve form the conical seal (contact) face of indent respectively.
3. a kind of low temperature pneumatic ball valve according to claim 1, it is characterized in that, the valve rod (2) of described insertion ring (3) lower end is socketed with packing ring (5), valve rod (2) between described insertion ring (3) and locking nut (4) is socketed with pressure ring (6) and the first butterfly spring (7), described first butterfly spring (7) is positioned at pressure ring (6) top.
4. a kind of low temperature pneumatic ball valve according to claim 1 or 3, is characterized in that, the upper end of described locking nut (4) is provided with lid, and the valve rod (2) of described lid upper end is provided with floor clip (8).
5. a kind of low temperature pneumatic ball valve according to claim 1, it is characterized in that, the upper end of described valve gap (1) is provided with the pneumatic actuator (9) for rotating with ovable valve stem (2), described pneumatic actuator (9) is arranged on valve rod (2) upper end through support (10), through coupling shaft connection for transmission between the output terminal of described pneumatic actuator (9) and the upper end of valve rod (2).
6. a kind of low temperature pneumatic ball valve according to claim 5, is characterized in that, described pneumatic actuator (9) is four cylinder final controlling element.
7. a kind of low temperature pneumatic ball valve according to claim 1, it is characterized in that, the lower end of described valve gap (1) is provided with valve body (11), snout cavity, spheroid chamber and outlet plenum is provided with in described valve body (11), be provided with spheroid (12) in described spheroid chamber, described spheroid (12) is connected with the lower end of valve rod (2);
Described spheroid (12) and spheroid chamber are provided with and export ball and serve as a contrast (14) between the inwall of outlet plenum side, described spheroid (12) and spheroid chamber are provided with inlet ball and serve as a contrast (13) between the inwall of snout cavity side, are provided with the second butterfly spring (15) between described inlet ball lining (13) and spheroid cavity wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510114336.5A CN104712784A (en) | 2015-03-16 | 2015-03-16 | Low-temperature pneumatic ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510114336.5A CN104712784A (en) | 2015-03-16 | 2015-03-16 | Low-temperature pneumatic ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104712784A true CN104712784A (en) | 2015-06-17 |
Family
ID=53412373
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510114336.5A Pending CN104712784A (en) | 2015-03-16 | 2015-03-16 | Low-temperature pneumatic ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104712784A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113864666A (en) * | 2021-10-18 | 2021-12-31 | 深圳市凯豪达氢能源有限公司 | Cut off stop valve fast |
-
2015
- 2015-03-16 CN CN201510114336.5A patent/CN104712784A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113864666A (en) * | 2021-10-18 | 2021-12-31 | 深圳市凯豪达氢能源有限公司 | Cut off stop valve fast |
| CN113864666B (en) * | 2021-10-18 | 2023-11-28 | 深圳市凯豪达氢能源有限公司 | Quick cut-off stop valve |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150617 |