CN203548984U - Low-temperature ball valve - Google Patents
Low-temperature ball valve Download PDFInfo
- Publication number
- CN203548984U CN203548984U CN201320699875.6U CN201320699875U CN203548984U CN 203548984 U CN203548984 U CN 203548984U CN 201320699875 U CN201320699875 U CN 201320699875U CN 203548984 U CN203548984 U CN 203548984U
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- valve
- spheroid
- valve rod
- valve body
- pedestal
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Abstract
The utility model relates to a low-temperature ball valve which comprises a valve body, a ball body, valve bases, a valve rod and an operation mechanism of the valve rod. The ball body is arranged in the valve boy, the valve body corresponding to the two sides of the ball body is provided with a medium inlet channel and a medium outlet channel, the valve bases include a first valve base arranged on the side, corresponding to the ball body, of the medium inlet channel and a second valve base arranged on the side, corresponding to the ball body, of the medium outlet channel, one end of the valve rod penetrates through the valve body and is in linkage with the ball body, the other end, opposite to the ball body, of the valve rod is in linkage with the operation mechanism, and when the ball body is in a closed state, a pressure release hole is formed in the side corresponding to the medium inlet channel. According to the technical scheme, when the ball body is in a closed state, the pressure release hole is formed in the medium inlet direction, and accordingly when the low-temperature ball valve is in a closed state, internal space of the valve is communicated with a medium inlet end, abnormal pressure rising caused by low-temperature media left in the middle of the valve body can be completely avoided, and safety performance is improved.
Description
Technical field
The utility model relates to a kind of ball valve, and its energy is high temperature resistant, low temperature damages, and can be widely used in the industrial fields such as oil, chemical industry, metallurgy, the energy and Coal Chemical Industry.
Background technique
Open-shut device (spheroid) is driven by valve rod, and as the valve that revolves motion, be defined as ball valve around valve rod axis, it is mainly used in blocking or connecting the medium in pipeline, also can be characterized in simple and compact for structure for the regulation and control of fluid, seal reliable, easy to maintenance.These are only descriptions generally, if medium is ethene, methane, nitrogen, oxygen, helium, hydrogen etc., wherein any when it liquefies, and temperature is all-150 ℃～-250 ℃ scopes, substantially approach or reach ultralow-temperature operation conditions.The valve that can normally work under this operating mode, not only to consider selection, main is structural design and thinking, consider that spheroid and cryogenic ball valve are when closed condition, the residual a part of cryogenic media of valve internal meeting, of long duration, this part residual medium can absorb external heat and cause and evaporate, volume sharply expands, and valve internal is boosted extremely, and valve and main system are threatened safely.
Summary of the invention
The deficiency existing for prior art, the utility model provides a kind of cryogenic ball valve with better Safety performance.
For achieving the above object, the utility model provides following technological scheme: a kind of cryogenic ball valve, comprise valve body, spheroid, valve seat, the operating device of valve rod and valve rod, described spheroid is placed in valve body, the corresponding spheroid of described valve body both sides are respectively arranged with medium access and medium is engaged in this profession, described valve seat comprises the first valve seat of being placed in corresponding spheroid one side of medium access and is placed in engage in this profession the second valve seat of corresponding spheroid one side of medium, described valve rod one end is through the setting that is connected of valve body and spheroid, the relative spheroid the other end of valve rod and the interlock of described operating device arrange, described spheroid in off position time corresponding medium access direction one side offer relief hole.
Adopt technique scheme, MEDIA FLOW Inbound when spheroid closed condition is offered relief hole, and while making cryogenic ball valve in off position, valve internal space communicates with medium inlet end, can avoid the residual cryogenic media in centre of valve body completely and cause extremely boosting, thereby improve Safety performance.
The utility model is further set to: described the first valve seat comprises pedestal, the first seal ring and Compress Spring, corresponding spheroid one side of described pedestal is provided with sealing surface, on the sealing surface of pedestal, be provided with groove, described first seal ring one end is embedded in the groove of pedestal, described Compress Spring is placed in relative the first seal ring opposite side of pedestal, and the two ends of Compress Spring respectively with the setting that offsets of pedestal and valve body.
Adopt technique scheme, medium access is pressure-bearing side, medium access is engaged in this profession mobile to medium, the seal ring of medium access is by PCTFE(polychlorotrifluoroethylene) make, and its iron chains are entered in metal pedestal, here mainly utilize the elasticity of resin to improve the sealing effect of valve, the cold flow that the pedestal being simultaneously made of metal can play the nonmetal seal ring of prevention produces; After medium access pedestal, be provided with cylinder type Compress Spring, heat expansion, shrinkage compensating action that main cause temperature variation causes.
The utility model is further set to: described the second valve seat is set to the second seal ring, and the corresponding spheroid of described valve body position is provided with sealing surface, on the sealing surface of valve body, is provided with groove, and described the second seal ring is embedded in the groove of described valve body.
Adopt technique scheme, main purpose is once meet accident, and after nonmetal seal ring damage, they can bear the seal action of cryogenic ball valve, can be referred to as fire resisting construction.
The utility model is further set to: also comprise valve gap, the bottom of described valve gap is connected with valve body, the follower that is provided with filler between the top of described valve gap and valve rod and compresses filler, between the top and bottom of described valve gap, be provided with prolongation neck, described prolongation neck has thermal baffle near the arranged outside of one end, bottom of valve gap.
Adopt technique scheme; main purpose is follower and filler to play insulation object; in order normally to work in the temperature range that further protection filler is allowed at it; also be equipped with thermal baffle near valve body direction lengthening valve gap; it is positioned at Stuffing box below, and its Main Function is to keep endothermic effect.
The utility model is further set to: between described spheroid and valve rod and between valve rod and valve gap, be respectively arranged with anti-static mechanism, described anti-static mechanism comprises steel ball and spring, on described valve rod, be provided with blind hole, described steel ball and spring are placed in respectively in blind hole, described steel ball respectively with the setting that offsets of spring and spheroid or valve rod, the setting that offsets of the diapire of the relative steel ball the other end of described spring and blind hole.
Adopt technique scheme, valve rod is considered the cause that is transferred medium and nonmetal seal ring, being respectively equipped with the electrostatic prevention structure being comprised of spring and steel ball between spheroid and valve rod and between valve rod and valve gap, to guarantee electric current static ground.
Below in conjunction with accompanying drawing, the utility model is further described.
Accompanying drawing explanation
Fig. 1 is the utility model example structure figure;
Fig. 2 is the D-D sectional view of Fig. 1;
Fig. 3 is the A portion enlarged view of Fig. 1;
Fig. 4 is the B portion enlarged view of Fig. 1;
Fig. 5 is the C portion enlarged view of Fig. 1.
Embodiment
A kind of cryogenic ball valve as Figure 1-Figure 5, comprise valve body 1, spheroid 2, valve seat 3, the operating device 5 of valve rod 4 and valve rod 4, described spheroid 2 is placed in valve body 1, the corresponding spheroid of described valve body 12 both sides are respectively arranged with medium access 101 and engage in this profession 102 with medium, described valve seat 3 comprises the first valve seat 301 of being placed in corresponding spheroid 2 one sides of medium access 101 and is placed in engage in this profession the second valve seat 302 of 102 corresponding spheroid 2 one sides of medium, described valve rod 4 one end are through the setting that is connected of valve body 1 and spheroid 2, valve rod 4 relative spheroid 2 the other ends and the interlock of described operating device arrange, described spheroid 2 in off position time corresponding medium access 101 direction one sides offer relief hole 201.Adopt technique scheme, MEDIA FLOW Inbound when spheroid 2 closed condition is offered relief hole 201, while making cryogenic ball valve in off position, valve internal space communicates with medium inlet end, can avoid the residual cryogenic media in centre of valve body 1 completely and cause extremely boosting, thereby improve Safety performance.
The present embodiment is further set to: described the first valve seat 301 comprises pedestal 3011, the first seal ring 3012 and Compress Spring 3013, corresponding spheroid 2 one sides of described pedestal 3011 are provided with sealing surface, on the sealing surface of pedestal 3011, be provided with groove, described first seal ring 3012 one end are embedded in the groove of pedestal 3011, described Compress Spring 3013 is placed in relative the first seal ring 3012 opposite sides of pedestal 3011, and the two ends of Compress Spring 3013 respectively with the setting that offsets of pedestal 3011 and valve body 1.Adopt technique scheme, medium access 101 is pressure-bearing side, medium access 101 is engaged in this profession and 102 is flowed to medium, the first seal ring 3012 of medium access 101 is by PCTFE(polychlorotrifluoroethylene) make, and its iron chains are entered in metal pedestal 3011, here mainly utilize the elasticity of resin to improve the sealing effect of valve, the cold flow that the pedestal 3011 being simultaneously made of metal can play the nonmetal seal ring of prevention produces; Medium access 101 pedestals 3011 are provided with cylinder type Compress Spring 3013 below, heat expansion, shrinkage compensating action that main cause temperature variation causes.
The present embodiment is further set to: described the second valve seat 302 is set to the second seal ring, and the corresponding spheroid of described valve body 12 positions are provided with sealing surface, on the sealing surface of valve body 1, are provided with groove, and described the second seal ring is embedded in the groove of described valve body 1.Adopt technique scheme, main purpose is once meet accident, and after nonmetal seal ring damage, they can bear the seal action of cryogenic ball valve, can be referred to as fire resisting construction.
The present embodiment is further set to: also comprise valve gap 6, the bottom of described valve gap 6 is connected with valve body 1, the follower 8 that is provided with filler 7 between the top of described valve gap 6 and valve rod 4 and compresses filler 7, between the top and bottom of described valve gap 6, be provided with prolongation neck, described prolongation neck has thermal baffle 9 near the arranged outside of one end, bottom of valve gap 6.Adopt technique scheme; main purpose is follower 8 and filler 7 to play insulation object; in order normally to work in the temperature range that further protection filler 7 is allowed at it; also be equipped with thermal baffle 9 near valve body 1 direction lengthening valve gap 6; it is positioned at Stuffing box below, and its Main Function is to keep endothermic effect.
The present embodiment is further set to: between described spheroid 2 and valve rod 4 and between valve rod 4 and valve gap 6, be respectively arranged with anti-static mechanism 10, described anti-static mechanism 10 comprises steel ball 1001 and spring 1002, on described valve rod 4, be provided with blind hole, described steel ball 1001 is placed in respectively in blind hole with spring 1002, described steel ball 1001 respectively with the setting that offsets of spring 1002 and spheroid 2 or valve rod 4, the setting that offsets of the diapire of relative steel ball 1001 the other ends of described spring 1002 and blind hole.Adopt technique scheme, valve rod 4 is considered the cause that is transferred medium and nonmetal seal ring, being respectively equipped with the electrostatic prevention structure 10 being formed by spring 1002 and steel ball 1001 between spheroid 2 and valve rod 4 and between valve rod 4 and valve gap 6, to guarantee electric current static ground.
Claims (5)
1. a cryogenic ball valve, comprise valve body, spheroid, valve seat, the operating device of valve rod and valve rod, described spheroid is placed in valve body, the corresponding spheroid of described valve body both sides are respectively arranged with medium access and medium is engaged in this profession, described valve seat comprises the first valve seat of being placed in corresponding spheroid one side of medium access and is placed in engage in this profession the second valve seat of corresponding spheroid one side of medium, described valve rod one end is through the setting that is connected of valve body and spheroid, the relative spheroid the other end of valve rod and the interlock of described operating device arrange, it is characterized in that: described spheroid in off position time corresponding medium access direction one side offer relief hole.
2. cryogenic ball valve according to claim 1, it is characterized in that: described the first valve seat comprises pedestal, the first seal ring and Compress Spring, corresponding spheroid one side of described pedestal is provided with sealing surface, on the sealing surface of pedestal, be provided with groove, described first seal ring one end is embedded in the groove of pedestal, described Compress Spring is placed in the relative seal ring opposite side of pedestal, and the two ends of Compress Spring respectively with the setting that offsets of pedestal and valve body.
3. cryogenic ball valve according to claim 2, it is characterized in that: described the second valve seat is set to the second seal ring, the corresponding spheroid of described valve body position is provided with sealing surface, on the sealing surface of valve body, is provided with groove, and described the second seal ring is embedded in the groove of described valve body.
4. according to the cryogenic ball valve described in claim 1 or 2 or 3, it is characterized in that: also comprise valve gap, the bottom of described valve gap is connected with valve body, the follower that is provided with filler between the top of described valve gap and valve rod and compresses filler, between the top and bottom of described valve gap, be provided with prolongation neck, described prolongation neck has thermal baffle near the arranged outside of one end, bottom of valve gap.
5. cryogenic ball valve according to claim 4, it is characterized in that: between described spheroid and valve rod and between valve rod and valve gap, be respectively arranged with anti-static mechanism, described anti-static mechanism comprises steel ball and spring, on described valve rod, be provided with blind hole, described steel ball and spring are placed in respectively in blind hole, described steel ball respectively with the setting that offsets of spring and spheroid or valve rod, the setting that offsets of the diapire of the relative steel ball the other end of described spring and blind hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320699875.6U CN203548984U (en) | 2013-11-07 | 2013-11-07 | Low-temperature ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320699875.6U CN203548984U (en) | 2013-11-07 | 2013-11-07 | Low-temperature ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203548984U true CN203548984U (en) | 2014-04-16 |
Family
ID=50467104
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320699875.6U Expired - Fee Related CN203548984U (en) | 2013-11-07 | 2013-11-07 | Low-temperature ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203548984U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104061341A (en) * | 2014-07-03 | 2014-09-24 | 叶平 | Multifunctional SF6 valve with temperature compensation and high sealing performance |
| CN104989841A (en) * | 2015-07-22 | 2015-10-21 | 雷蒙德(北京)科技股份有限公司 | High-temperature metal hard sealing floating ball valve |
| CN107842629A (en) * | 2017-12-01 | 2018-03-27 | 中亚阀门有限公司 | A kind of compound dual low temperature resistant ball valve |
| CN108757983A (en) * | 2018-05-21 | 2018-11-06 | 西诺威阀门控制（苏州）有限公司 | Ultralow temperature floating ball valve |
-
2013
- 2013-11-07 CN CN201320699875.6U patent/CN203548984U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104061341A (en) * | 2014-07-03 | 2014-09-24 | 叶平 | Multifunctional SF6 valve with temperature compensation and high sealing performance |
| CN104989841A (en) * | 2015-07-22 | 2015-10-21 | 雷蒙德(北京)科技股份有限公司 | High-temperature metal hard sealing floating ball valve |
| CN107842629A (en) * | 2017-12-01 | 2018-03-27 | 中亚阀门有限公司 | A kind of compound dual low temperature resistant ball valve |
| CN108757983A (en) * | 2018-05-21 | 2018-11-06 | 西诺威阀门控制（苏州）有限公司 | Ultralow temperature floating ball valve |
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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: 20140416 Termination date: 20141107 |
|
| EXPY | Termination of patent right or utility model |