CN111396580A - Double-guide high-temperature molten salt regulating valve - Google Patents
Double-guide high-temperature molten salt regulating valve Download PDFInfo
- Publication number
- CN111396580A CN111396580A CN201910810455.2A CN201910810455A CN111396580A CN 111396580 A CN111396580 A CN 111396580A CN 201910810455 A CN201910810455 A CN 201910810455A CN 111396580 A CN111396580 A CN 111396580A
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- China
- Prior art keywords
- valve
- guide sleeve
- molten salt
- guide
- temperature molten
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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
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
- F16K3/0218—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with only one sealing face
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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
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/22—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution
- F16K3/24—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members
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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
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/30—Details
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
Abstract
The invention discloses a double-guide high-temperature molten salt regulating valve which comprises a valve body, a support, an upper valve cover, a valve rod and a valve plug, wherein the valve body, the support and the upper valve cover are sequentially connected, one end of the valve rod sequentially penetrates through the upper valve cover, the support and the valve body and is fixed with the valve plug; the upper guide sleeve is arranged in the support, an upper guide hole matched with the valve rod is formed in the upper guide sleeve, and the valve rod penetrates through the upper guide hole and is in sliding connection with the upper guide sleeve. The invention provides a double-guide high-temperature molten salt regulating valve, which utilizes a double-guide structure to ensure that the guide of a valve rod is more stable.
Description
Technical Field
The invention relates to the technical field of regulating valves, in particular to a double-guide high-temperature molten salt regulating valve.
Background
The fused salt used as the heat storage medium can improve the operating temperature of the solar power station to 450-565 ℃, improve the heating efficiency by 40 percent, and improve the heat storage efficiency by 2.5 times compared with the traditional method, thereby reducing the volume of a heat storage container when the heat capacity is fixed. At present, a common molten salt valve is still a traditional single-seat regulating valve, but high-temperature molten salt is high-temperature fluid, in order to ensure that the temperature of the upper end of a valve rod and the temperature of an upper valve cover are not too high, a support with a certain height can be arranged between the upper valve cover and a valve body, the height of the support and the gap between the support and a connecting rod are determined through calculation and simulation, the purpose is to reduce the temperature of a filler in the upper valve cover to a certain value, the value cannot be too high, the use of a filler part on the upper valve cover can be influenced too high, the value cannot be too low, and the valve is blocked due to crystallization of too low molten salt. Because the support of certain height need dispose, the length of valve rod can corresponding increase, also can lead to the increase of high temperature molten salt valve complete machine size, and the high temperature molten salt valve complete machine size too high can lead to the unstable problem of valve rod direction.
The Chinese patent application publication No. CN107654678A, published as 2018, 02/02, entitled "high-temperature molten salt regulating valve with self-cleaning function", discloses a high-temperature molten salt regulating valve with self-cleaning function, which comprises a valve body, a valve cover, a valve rod, a valve core, a valve seat and a sleeve; the valve body is provided with a valve inlet and a valve outlet, and the valve seat is provided with a joint hole for communicating the valve inlet with the sleeve; the upper end of the hole wall of the connection hole is provided with a circle of sunken steps, the steps are provided with first conical surfaces used for being matched with the valve core in a sealing mode, and a circle of upper side cutting edges are formed between the hole wall of the connection hole and transition surfaces between the steps and the hole wall of the connection hole. The patent still has the problem of unstable valve stem guidance.
Disclosure of Invention
The invention provides a double-guide high-temperature molten salt regulating valve for overcoming the problem of unstable valve rod guide of a high-temperature molten salt regulating valve in the prior art, and the guide of a valve rod is more stable by utilizing a double-guide structure.
In order to achieve the purpose, the invention adopts the following technical scheme:
a double-guide high-temperature molten salt regulating valve comprises a valve body, a support, an upper valve cover, a valve rod and a valve plug, wherein the valve body, the support and the upper valve cover are sequentially connected, one end of the valve rod sequentially penetrates through the upper valve cover, the support and the valve body and is fixed with the valve plug; the upper guide sleeve is arranged in the support, an upper guide hole matched with the valve rod is formed in the upper guide sleeve, and the valve rod penetrates through the upper guide hole and is in sliding connection with the upper guide sleeve.
In the above technical solution, the vertical relationship is the vertical position of the regulating valve during actual use, and is also consistent with the vertical position in the attached drawings. In the technical scheme, the excircle of the valve plug is matched with the inner hole of the valve sleeve and moves up and down in the valve sleeve, and the inner hole of the valve sleeve plays a role in guiding, namely first guiding; the excircle of the connecting rod is matched with the upper guide hole and moves up and down in the upper guide sleeve, and the second guide is realized. A gap is arranged between the valve rod and the support, so that the valve rod is not directly contacted with the support. The regulating valve forms guide supports at the upper guide sleeve and the valve sleeve, so that the stability of the valve rod during movement can be improved, and the problem of unstable guide caused by overhigh whole size of the high-temperature molten salt valve is solved.
Preferably, the upper guide sleeve is arranged on one side far away from the valve body. The structure can increase the distance between the two guide mechanisms, thereby increasing the stability of the guide.
Preferably, a sealing gasket is arranged at the joint of the valve sleeve and the valve body. The sealing gasket can guarantee the sealing performance of the regulating valve.
Preferably, the valve rod comprises a connecting rod and an extension rod which are connected with each other, the connecting rod is matched with the upper guide sleeve, and the extension rod penetrates through the upper valve cover. The step that connecting rod and extension bar junction formed can play limiting displacement, avoids the valve plug direct and support collision, influences life, also can avoid the valve rod directly to deviate from the upper valve bonnet when the valve plug breaks down with the valve rod, causes high temperature fused salt to leak, can guarantee the security of governing valve.
Preferably, the valve sleeve is provided with a lower guide sleeve, the lower guide sleeve is fixed with the valve body, a lower guide hole matched with the valve plug is formed in the lower guide sleeve, and the valve rod penetrates through the lower guide hole and is connected with the valve plug through the lower guide sleeve and moves up and down in the valve sleeve. The structure can be applied to the regulating valve with the valve plug larger and directly sliding relative to the valve sleeve through contact.
Preferably, the upper end of the support is provided with a containing hole, and the upper guide sleeve is arranged in the containing hole and is in interference fit with the upper containing hole. The upper guide sleeve is fixed in the support through interference fit or direct welding, so that the upper guide sleeve is prevented from moving along with the upper guide sleeve when the valve rod moves up and down, the stability of a wire structure is ensured, and the guide precision is ensured.
Preferably, the upper guide sleeve is provided with a balance hole, and the balance hole penetrates through the upper end and the lower end of the upper guide sleeve; a gap is arranged between the upper guide sleeve and the upper valve cover, and a gap is arranged between the upper guide sleeve and the bottom surface of the accommodating hole. The balance hole can guarantee the gas communication between the upper guide sleeve and the lower guide sleeve, and when the valve rod moves up and down, the valve rod is prevented from moving and being blocked due to the fact that gas is not communicated. The upper and lower gaps of the upper guide sleeve ensure that the balance hole cannot be blocked.
Preferably, the bottom surface of the accommodating hole is a conical surface, and the periphery of the conical surface is high and the middle of the conical surface is low. When the valve rod moves up and down, a small amount of high-temperature molten salt inevitably enters a space above the valve plug. The periphery of the conical surface is high and the middle is low, so that high-temperature molten salt entering the upper part of the guide sleeve can smoothly flow down and cannot be accumulated at the position to block the lower end of the balance hole.
Preferably, the upper end of the balance hole is provided with a slope surface, and the lower end of the slope surface faces the balance hole. The structure can ensure that high-temperature molten salt smoothly flows down and is not accumulated at the upper end of the balance hole.
The invention has the beneficial effects that: (1) the problem of unstable valve rod guide caused by over-high size of the whole high-temperature molten salt valve can be solved while the problem of cooling at the packing position of the high-temperature molten salt valve is solved; (2) the problem of salt accumulation of the high-temperature molten salt valve in the valve can be solved; (3) the gas communication of upper and lower guide sleeve can be guaranteed, and the problem that the valve rod is blocked due to the fact that gas is not communicated is avoided.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
FIG. 3 is a schematic structural view of embodiment 3.
In the figure: the valve comprises a valve body 1, a support 2, an accommodating hole 2.1, a conical surface 2.2, an upper valve cover 3, a valve rod 4, a connecting rod 4.1, an extension rod 4.2, a valve plug 5, a valve sleeve 6, an upper guide sleeve 7, an upper guide hole 7.1, a balance hole 7.2, a slope surface 7.3, a lower guide sleeve 8, a lower guide hole 8.1 and a sealing gasket 9.
Detailed Description
The invention is further described with reference to the following figures and specific embodiments.
Example 1:
as shown in fig. 1 and 2, the double-guide high-temperature molten salt regulating valve comprises a valve body 1, a support 2, an upper valve cover 3, a valve rod 4, a valve plug 5, a valve sleeve 6 and an upper guide sleeve 7, wherein the valve body 1, the support 2 and the upper valve cover 3 are sequentially connected, and a sealing gasket 9 is arranged at the joint of the valve sleeve 6 and the valve body 1; the valve rod 4 comprises a connecting rod 4.1 and an extension rod 4.2 which are connected with each other, the connecting rod 4.1 is matched with the upper guide sleeve 7, the extension rod 4.2 penetrates through the upper valve cover 3, and one end of the valve rod 4 sequentially penetrates through the upper valve cover 3, the support 2 and the valve body 1 and is fixed with the valve plug 5; the upper end of the support 2 is provided with a containing hole 2.1, and the upper guide sleeve 7 is arranged in the containing hole 2.1 and is in interference fit with the upper containing hole 2.1; the upper guide sleeve 7 is provided with a balance hole 7.2, and the balance hole 7.2 penetrates through the upper end and the lower end of the upper guide sleeve 7; a gap is arranged between the upper guide sleeve 7 and the upper valve cover 3, and a gap is arranged between the upper guide sleeve 7 and the bottom surface of the accommodating hole 2.1; an upper guide hole 7.1 matched with the valve rod 4 is formed in the upper guide sleeve 7, and the valve rod 4 penetrates through the upper guide hole 7.1 and is in sliding connection with the upper guide sleeve 7; valve barrel 6 sets up in valve body 1 and fixed with valve body 1, and valve plug 5 sets up in valve barrel 6 and with valve barrel 6 sliding connection.
In the above technical solution, the vertical relationship is the vertical position of the regulating valve during actual use, and is also consistent with the vertical position in the attached drawings. The excircle of the valve plug 5 is matched with the inner hole of the valve sleeve 6 and moves up and down in the valve sleeve 6, and the inner hole of the valve sleeve 6 plays a role in guiding, which is a first guide; the outer circle of the connecting rod 4.1 is matched with the upper guide hole 7.1 and moves up and down in the upper guide sleeve 7, and the second guide is realized. A gap is arranged between the valve rod 4 and the support 2, so that the valve rod 4 is not directly contacted with the support 2. The regulating valve forms guide supports at the upper guide sleeve 7 and the valve sleeve 6, so that the stability of the valve rod 4 during movement can be improved, and the problem of unstable guide caused by overhigh overall size of the high-temperature molten salt valve is solved.
Example 2:
as shown in fig. 2, in embodiment 1, the bottom surface of the receiving hole 2.1 is a conical surface 2.2, the conical surface 2.2 is high at the periphery and low at the middle, a slope 7.3 is provided at the upper end of the balance hole 7.2, and the lower end of the slope 7.3 faces the balance hole 7.2. When the valve rod 4 moves up and down, a small amount of high-temperature molten salt inevitably enters the space above the valve plug 5. The periphery of the conical surface 2.2 is high and the middle is low, so that high-temperature molten salt entering the upper part of the guide sleeve can smoothly flow down and cannot be accumulated to block the lower end of the balance hole 7.2. The slope 7.3 can ensure that high-temperature molten salt smoothly flows down and is not accumulated at the upper end of the balance hole 7.2.
Example 3:
as shown in fig. 3, most of the structure of the valve sleeve is the same as that of embodiment 1, except that a lower guide sleeve 8 is arranged on the valve sleeve 6, the lower guide sleeve 8 is fixed with the support 2, a lower guide hole 8.1 matched with the valve core 5 is arranged on the lower guide sleeve 8, and the valve rod 4 passes through the lower guide hole 8.1 and is connected with the valve core 5 through the lower guide sleeve 8 to move up and down in the guide sleeve 8. The structure can be applied to a regulating valve with a small valve core 5 and no direct relative sliding contact with a valve sleeve 6.
The invention has the beneficial effects that: the problem of unstable valve rod guide caused by over-high size of the whole high-temperature molten salt valve can be solved while the problem of cooling at the packing position of the high-temperature molten salt valve is solved; the problem of salt accumulation of the high-temperature molten salt valve in the valve can be solved; the gas communication of upper and lower guide sleeve can be guaranteed, and the problem that the valve rod is blocked due to the fact that gas is not communicated is avoided.
Claims (9)
1. A double-guide high-temperature molten salt regulating valve comprises a valve body, a support, an upper valve cover, a valve rod and a valve plug, wherein the valve body, the support and the upper valve cover are sequentially connected, one end of the valve rod sequentially penetrates through the upper valve cover, the support and the valve body and is fixed with the valve plug; the upper guide sleeve is arranged in the support, an upper guide hole matched with the valve rod is formed in the upper guide sleeve, and the valve rod penetrates through the upper guide hole and is in sliding connection with the upper guide sleeve.
2. The double-guide high-temperature molten salt adjusting valve as claimed in claim 1, wherein the upper guide sleeve is arranged on the side far away from the valve body.
3. The double-guide high-temperature molten salt adjusting valve as claimed in claim 1, wherein a sealing gasket is arranged at the joint of the valve sleeve and the valve body.
4. The double-guide high-temperature molten salt adjusting valve as claimed in claim 1, wherein the valve rod comprises a connecting rod and an extension rod which are connected with each other, the connecting rod is matched with the upper guide sleeve, and the extension rod penetrates through the upper valve cover.
5. The double-guide high-temperature molten salt adjusting valve as claimed in claim 1, 2, 3 or 4, wherein the valve sleeve is provided with a lower guide sleeve, the lower guide sleeve is fixed with the valve body, a lower guide hole matched with the valve plug is formed in the lower guide sleeve, and the valve rod penetrates through the lower guide hole and is connected with the valve plug through the lower guide sleeve to move up and down in the valve sleeve.
6. The double-guide high-temperature molten salt adjusting valve as claimed in claim 1, 2, 3 or 4, wherein the support is provided with a containing hole at the upper end, and the upper guide sleeve is arranged in the containing hole and is in interference fit with the upper containing hole.
7. The double-guide high-temperature molten salt adjusting valve as claimed in claim 6, wherein the upper guide sleeve is provided with balance holes, and the balance holes penetrate through the upper end and the lower end of the upper guide sleeve; a gap is arranged between the upper guide sleeve and the upper valve cover, and a gap is arranged between the upper guide sleeve and the bottom surface of the accommodating hole.
8. The double-guide high-temperature molten salt adjusting valve as claimed in claim 6, wherein the bottom surface of the accommodating hole is a conical surface, and the conical surface is high in periphery and low in middle.
9. The double-guide high-temperature molten salt adjusting valve as claimed in claim 6, wherein the upper end of the balance hole is provided with a slope surface, and the lower end of the slope surface faces the balance hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910810455.2A CN111396580A (en) | 2019-08-29 | 2019-08-29 | Double-guide high-temperature molten salt regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910810455.2A CN111396580A (en) | 2019-08-29 | 2019-08-29 | Double-guide high-temperature molten salt regulating valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111396580A true CN111396580A (en) | 2020-07-10 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910810455.2A Pending CN111396580A (en) | 2019-08-29 | 2019-08-29 | Double-guide high-temperature molten salt regulating valve |
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| Country | Link |
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| CN (1) | CN111396580A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08312799A (en) * | 1995-05-23 | 1996-11-26 | Mitsubishi Heavy Ind Ltd | Supply valve for injection medium |
| JP2008275035A (en) * | 2007-04-27 | 2008-11-13 | Hitachi Ltd | Steam valve for steam turbine |
| CN203115114U (en) * | 2012-12-24 | 2013-08-07 | 浙江中控流体技术有限公司 | Double-guidance single-seated valve device |
| CN104482238A (en) * | 2014-10-31 | 2015-04-01 | 双恒阀门有限公司 | High-temperature fused salt conveying throttle valve |
| CN205504021U (en) * | 2016-04-07 | 2016-08-24 | 浙江贝尔控制阀门有限公司 | Take high temperature governing valve of wear -resisting graphite guide ring |
| CN205654891U (en) * | 2016-05-27 | 2016-10-19 | 艾坦姆流体控制技术（北京）有限公司 | Two direction case subassemblies |
| CN106969158A (en) * | 2017-05-25 | 2017-07-21 | 五洲阀门股份有限公司 | A kind of high-temperature bellow valve |
| CN208845739U (en) * | 2018-08-29 | 2019-05-10 | 旦宇科技江苏有限公司 | A kind of pneumatic bellows self-sealing single-seat adjusting valve |
-
2019
- 2019-08-29 CN CN201910810455.2A patent/CN111396580A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08312799A (en) * | 1995-05-23 | 1996-11-26 | Mitsubishi Heavy Ind Ltd | Supply valve for injection medium |
| JP2008275035A (en) * | 2007-04-27 | 2008-11-13 | Hitachi Ltd | Steam valve for steam turbine |
| CN203115114U (en) * | 2012-12-24 | 2013-08-07 | 浙江中控流体技术有限公司 | Double-guidance single-seated valve device |
| CN104482238A (en) * | 2014-10-31 | 2015-04-01 | 双恒阀门有限公司 | High-temperature fused salt conveying throttle valve |
| CN205504021U (en) * | 2016-04-07 | 2016-08-24 | 浙江贝尔控制阀门有限公司 | Take high temperature governing valve of wear -resisting graphite guide ring |
| CN205654891U (en) * | 2016-05-27 | 2016-10-19 | 艾坦姆流体控制技术（北京）有限公司 | Two direction case subassemblies |
| CN106969158A (en) * | 2017-05-25 | 2017-07-21 | 五洲阀门股份有限公司 | A kind of high-temperature bellow valve |
| CN208845739U (en) * | 2018-08-29 | 2019-05-10 | 旦宇科技江苏有限公司 | A kind of pneumatic bellows self-sealing single-seat adjusting valve |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200710 |
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| RJ01 | Rejection of invention patent application after publication |