CN104265937A - Self-limited insulated ball valve - Google Patents
Self-limited insulated ball valve Download PDFInfo
- Publication number
- CN104265937A CN104265937A CN201410560935.5A CN201410560935A CN104265937A CN 104265937 A CN104265937 A CN 104265937A CN 201410560935 A CN201410560935 A CN 201410560935A CN 104265937 A CN104265937 A CN 104265937A
- Authority
- CN
- China
- Prior art keywords
- valve
- self
- valve body
- spheroid
- ball
- 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
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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
- 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
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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
- F16K49/00—Means in or on valves for heating or cooling
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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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Taps Or Cocks (AREA)
- Details Of Valves (AREA)
Abstract
The invention discloses a self-limited insulated ball valve and belongs to the field of valves. The self-limited insulated ball valve comprises a valve body, a ball body and a valve rod, a self-balancing hole is opened in the lower end of the valve rod, the valve rod is connected with the ball body, the valve rod and the ball body are arranged in the valve body, a valve seat is arranged between the ball body and the valve body, and a compensation spring is arranged between the valve seat and the valve body; the valve seat fits with the ball body to form a sealing surface, an annular groove is opened in the surface of the valve seat in contact with the valve body, and a self-limited electric tracing band is arranged in the annular groove; an axially vertical through hole matched with the self-limited electric tracing band in size is opened in the valve body. The self-limited insulated ball valve well solves the heat preservation problem in the ball valve.
Description
Technical field
The present invention relates to valve field, specifically a kind of self limiting Thermal insulating ball valve.
Background technique
Ball valve is widely used in industries such as petroleum refining, long-distance transport pipes, chemical industry, papermaking, pharmacy, water conservancy, electric power, municipal administration, iron and steel, occupies very important status in national economy.Be provided with spheroid in ball valve, realize opening or closing the function of medium channel mainly through spinning ball, then cut-outs can be played, distribute and the effect in change media flow direction.
When ball valve applies in full-bodied chemical medium, temperature reduces then can cause medium generation condensation, and spherome surface and sealing surface of seat produce crystallization, and crystallisation adsorption can cause spheroid to open and close difficulty on spheroid, wearing and tearing are accelerated, and have a strong impact on the working life of ball valve.And the too high ball valve internal pressure that can cause of temperature is unbalance, causes spheroid to open and close and rotate difficulty, seal ring deformation inefficacy etc.
Summary of the invention
The present invention aims to provide a kind of self limiting Thermal insulating ball valve, to solve the problem.
For achieving the above object, technological scheme of the present invention is as follows:
A kind of self limiting Thermal insulating ball valve, comprises valve body, spheroid, it is characterized in that: also include valve rod, valve rod lower end has self balancing hole, and valve rod is connected to spheroid, and valve rod and spheroid are arranged in valve body, be provided with valve seat between spheroid and valve body, between valve seat and valve body, be also provided with counterbalance spring; Described valve seat laminating spheroid forms sealing surface, and valve seat and valve body contact face have annular groove, are provided with self limiting type electric-heating belt in annular groove; Described valve body has and the axially vertical and through hole of size and Self-limited electric heating band adaptation.
Further, described valve body and the contact surface of valve seat have the annular groove placing seal ring.
Further, described seal ring is fluorine rubber ring.
Further, described valve rod is extended type, and is provided with stuffing box packing on top.
Further, described counterbalance spring specifically disc spring.
Beneficial effect of the present invention is:
One, the self limiting type electric-heating belt adopted is a kind of energy-saving electrical tracing special cable, has very high positive temperature characteristic with general electric heating unlike it; Temperature is higher, and resistance is higher, and power is less.Can effectively prevent heating-up temperature too high, cause vaporizes in valve body, thus the imbalance of pressure in valve body, it also avoid the seal failure that in the too high ball valve of temperature, each sealed member generation slight deformation causes.
Two, directly on valve seat, have groove, arrange heating element in groove, heating effect is obvious, effectively can prevent medium Yin Wendu from reducing and produce crystallization, avoid crystallisation adsorption that spheroid can be caused on spheroid to open and close difficulty, wearing and tearing are accelerated, and have a strong impact on the problem in the working life of ball valve.
Three, self balancing hole is had in valve rod lower end, after avoiding heating rear valve body medium channel and ball interior to produce the temperature difference, cause valve body media passage and ball interior to increase relative to the pressure difference of valve rod upper end, when ball valve opens and closes, moment increases, and not easily closes and opens.
Four, on valve body, have the annular groove that two are placed sealing O shape circle, adopt interference fit, avoid medium to enter the annular groove of valve seat, affect the work of self limiting type heating tape.
Accompanying drawing explanation
Fig. 1 is the structural representation of self limiting Thermal insulating ball valve provided by the invention.
Mark in figure: 1 be valve body, 2 be disc spring, 3 be valve seat, 4 be annular groove, 5 be seal ring, 6 be through hole, 7 be self balancing hole, 8 be stuffing box packing, 9 be spheroid, 10 for valve rod.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment, the present invention will be further described.
As shown in Figure 1, a kind of self limiting Thermal insulating ball valve, comprises valve body 1, spheroid 9, also includes valve rod 10, valve rod 10 is extended type, and being provided with stuffing box packing 8 on top, valve rod 10 lower end has self balancing hole 7, and valve rod 10 is connected to spheroid 9, valve rod 10 and spheroid 9 are arranged in valve body 1, be provided with valve seat 3 between spheroid 9 and valve body 1, between valve seat 3 and valve body 1, be also provided with counterbalance spring, specifically disc spring 2.Described valve seat 3 spheroid 9 of fitting forms sealing surface, and valve seat 3 and valve body 1 surface of contact have annular groove 4, are provided with self limiting type electric-heating belt in annular groove 4; Described valve body 1 has and the axially vertical and through hole 6 of size and Self-limited electric heating band adaptation.Described valve body 1 has with valve seat 3 surface of contact the annular groove placing seal ring 5, and seal ring 5 is fluorine rubber ring.
In a pre-installation, by Self-limited electric heating band around annular groove 4 be wound around a circle or a few, then to draw from the through hole 6 valve body 1, and connect with the mains.Self limiting type electric-heating belt is a kind of energy-saving electrical tracing special cable, has very high positive temperature characteristic with general electric heating unlike it; Temperature is higher, and resistance is higher, and power is less.Can effectively prevent heating-up temperature too high, cause vaporizes in valve body, thus the imbalance of pressure in valve body, it also avoid the seal failure that in the too high ball valve of temperature, each sealed member generation slight deformation causes.After the heating, the self balancing hole 7 of opening by valve rod 10 lower end, to balance the pressure difference in valve rod 10 upper end operative section and spheroid 9, avoids pressure difference excessive, the problem that ball valve can not restart and close.Adopt the present invention effectively to solve the insulation problem of ball valve inside, prevent medium crystallization from affecting ball valve working life.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1. a self limiting Thermal insulating ball valve, comprises valve body, spheroid, it is characterized in that: also include valve rod, valve rod lower end has self balancing hole, and valve rod is connected to spheroid, and valve rod and spheroid are arranged in valve body, be provided with valve seat between spheroid and valve body, between valve seat and valve body, be also provided with counterbalance spring; Described valve seat laminating spheroid forms sealing surface, and valve seat and valve body contact face have annular groove, are provided with self limiting type electric-heating belt in annular groove; Described valve body has and the axially vertical and through hole of size and Self-limited electric heating band adaptation.
2. self limiting Thermal insulating ball valve according to claim 1, is characterized in that: described valve body and the contact surface of valve seat have the annular groove placing seal ring.
3. self limiting Thermal insulating ball valve according to claim 2, is characterized in that: described seal ring is fluorine rubber ring.
4. self limiting Thermal insulating ball valve according to claim 1, is characterized in that: described valve rod is extended type, and is provided with stuffing box packing on top.
5. self limiting Thermal insulating ball valve according to claim 1, is characterized in that: described counterbalance spring specifically disc spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410560935.5A CN104265937A (en) | 2014-10-21 | 2014-10-21 | Self-limited insulated ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410560935.5A CN104265937A (en) | 2014-10-21 | 2014-10-21 | Self-limited insulated ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104265937A true CN104265937A (en) | 2015-01-07 |
Family
ID=52157491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410560935.5A Pending CN104265937A (en) | 2014-10-21 | 2014-10-21 | Self-limited insulated ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104265937A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107781448A (en) * | 2017-11-24 | 2018-03-09 | 泗县金皖泵业有限公司 | A kind of antifreeze ball valve |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5099883A (en) * | 1990-12-27 | 1992-03-31 | Aeroquip Corporation | Low spill identical half coupling |
| CN2893339Y (en) * | 2006-04-20 | 2007-04-25 | 湖北洪城通用机械股份有限公司 | Electric vacuum valve |
| CN201246482Y (en) * | 2008-09-05 | 2009-05-27 | 西安轨道交通装备有限责任公司 | Heat insulation cock valve |
| CN203560500U (en) * | 2013-11-21 | 2014-04-23 | 盐城圣科球阀有限公司 | Novel cryogenic fixed ball valve |
| CN203571207U (en) * | 2013-12-05 | 2014-04-30 | 葛洲坝（宜昌）燃气有限公司 | Heat insulation device of pressure reducing valve |
| CN204083337U (en) * | 2014-10-21 | 2015-01-07 | 成都市翻鑫家科技有限公司 | A kind of self limiting Thermal insulating ball valve |
-
2014
- 2014-10-21 CN CN201410560935.5A patent/CN104265937A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5099883A (en) * | 1990-12-27 | 1992-03-31 | Aeroquip Corporation | Low spill identical half coupling |
| CN2893339Y (en) * | 2006-04-20 | 2007-04-25 | 湖北洪城通用机械股份有限公司 | Electric vacuum valve |
| CN201246482Y (en) * | 2008-09-05 | 2009-05-27 | 西安轨道交通装备有限责任公司 | Heat insulation cock valve |
| CN203560500U (en) * | 2013-11-21 | 2014-04-23 | 盐城圣科球阀有限公司 | Novel cryogenic fixed ball valve |
| CN203571207U (en) * | 2013-12-05 | 2014-04-30 | 葛洲坝（宜昌）燃气有限公司 | Heat insulation device of pressure reducing valve |
| CN204083337U (en) * | 2014-10-21 | 2015-01-07 | 成都市翻鑫家科技有限公司 | A kind of self limiting Thermal insulating ball valve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107781448A (en) * | 2017-11-24 | 2018-03-09 | 泗县金皖泵业有限公司 | A kind of antifreeze ball valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150107 |
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| RJ01 | Rejection of invention patent application after publication |