CN105508720A - Corrugated pipe stop valve for photo-thermal electricity generation fused salt - Google Patents

Corrugated pipe stop valve for photo-thermal electricity generation fused salt Download PDF

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Publication number
CN105508720A
CN105508720A CN201610025570.5A CN201610025570A CN105508720A CN 105508720 A CN105508720 A CN 105508720A CN 201610025570 A CN201610025570 A CN 201610025570A CN 105508720 A CN105508720 A CN 105508720A
Authority
CN
China
Prior art keywords
valve
bellows
photo
filler
molten salt
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
Application number
CN201610025570.5A
Other languages
Chinese (zh)
Inventor
陈继江
于婷婷
包张来
唐豪瑜
胡军荣
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beijing Valve General Factory Co Ltd
Original Assignee
Beijing Valve General Factory Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Beijing Valve General Factory Co Ltd filed Critical Beijing Valve General Factory Co Ltd
Priority to CN201610025570.5A priority Critical patent/CN105508720A/en
Publication of CN105508720A publication Critical patent/CN105508720A/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32Details
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K41/00Spindle sealings
    • F16K41/02Spindle sealings with stuffing-box ; Sealing rings

Abstract

The invention provides a corrugated pipe stop valve for photo-thermal electricity generation fused salt. The corrugated pipe stop valve comprises a valve body, a valve deck connected to the upper portion of the valve body in a sealed mode and a valve rod arranged in the valve deck in a penetrating mode. A corrugated pipe is arranged on the outer side of the valve rod in a sleeving mode and located on the inner side of the lower end of the valve deck. An upper sealing structure is arranged on the part, between the valve rod and the valve deck, of the upper portion of the corrugated pipe and comprises filler arranged between the valve rod and the valve deck in a padding mode, a filler pressing sleeve arranged on the upper portion of the filler in a pressing mode, and a filler pressing plate arranged on the upper portion of the filler pressing sleeve in a pressing mode, wherein the filler pressing plate and the valve deck are fixedly connected through a bolt assembly and a second pre-tightening compensation disc spring. According to the corrugated pipe stop valve for photo-thermal electricity generation fused salt, the sealing structure combining the corrugated pipe and the filler is adopted, the filler can still perform the sealing effect when the corrugated pipe is damaged in the using process, and thus the valid time of the sealing performance of the valve is prolonged.

Description

Photo-thermal generating molten salt bellows stop valve
Technical field
The present invention relates to mechanical engineering valve technology field, be specifically related to a kind of photo-thermal generating molten salt bellows stop valve, especially a kind of fused salt photo-thermal generating molten salt bellows stop valve.
Background technique
Valve is the device controlling the direction of fluid, pressure and flow in fluid system, the medium in pipe arrangement and equipment (as liquid, gas, powder) is flowed or stops and controlling its flow.Utilize valve to change path section and media flow direction in pipeline fluid transporting system, can be used for the flowing controlling all kinds fluids such as water, steam, oil product, gas, mud, various Korrosionsmedium, liquid metal and radioactive fluid, there is the functions such as water conservancy diversion, cut-off, throttling, non-return, shunting or overflow release.
For the valve that fluid controls, various valves used from the simplest stop valve to very complicated robot control system(RCS), its kind and specification various, the inside nominal diameter of valve reaches greatly the industrial pipeline valve of 10m to latus rectum from atomic little Gauge Valves, the working pressure of valve can ultrahigh pressure from 0.0013MPa to 1000MPa, and operating temperature is from the ultralow temperature of-270 DEG C to the high temperature of 1430 DEG C.The control of valve can adopt the multiple kind of drive, as manual, electronic, surge, pneumatic, turbine, electromagnetic driven, electromagnetism surge, electricity surges, air-or liquid-operated, spur wheel, umbrella gear driving etc.Can under the effect of pressure, temperature or other form transducing signal, by predetermined requirement action, or do not rely on transducing signal and simply open or close, valve rely on drive or automechanism makes open-shut device be elevated, slippage, swing or rotation motion, thus the size changing its Flow area is to realize its controlling functions.
Along with the develop rapidly of photothermal power generation industry, Molten Binary Salts (60% sodium nitrate+40% potassium nitrate) is the ripe heat-storage medium being suitable for solar-thermal generating system be proven, this temperature of molten salt is up to 600 DEG C, and be toxic substance, the sealing reliability of valve is required that high, easy for installation, firm and durable, economy, energy saving standard valve is the first-selection in fused salt transporting system.
Bellows valve is high at seal request, be widely used in the fused salt transporting system of conveying poisonous medium, structure a kind of photo-thermal generating molten salt bellows stop valve disclosed in Chinese invention patent CN204852365U mostly of existing photo-thermal generating molten salt bellows stop valve, comprise valve body and be located at the valve gap on valve body, valve rod is equipped with in the middle part of described valve gap, described valve rod lower end is provided with flap, described valve body left end offers feed pathway, described valve body right-hand member offers liquid outlet channel, between described feed pathway and liquid outlet channel, valve body is provided with channel partition, described channel partition upper end is provided with the connecting port being communicated with feed pathway and liquid outlet channel, described connecting port lower end is installed with filter screen, described feed pathway internal face lower end is provided with arc-shaped concave, and valve body be positioned at arc-shaped concave medium position offer collection dirty groove, and collect dirty groove lower end and be provided with drain outlet, described drain outlet external port is provided with sealing nut, described flap is made up of elastic caoutchouc, and the upper plane of described connecting port and the lower plane of flap form sealing surface, and the upper plane of described connecting port is provided with annular projection, described connecting port is taper wide at the top and narrow at the bottom, and described flap lower plane is provided with the frustum stretched in connecting port, and the sidewall of described frustum and the inwall of connecting port are formed and be sealed and matched.Photo-thermal generating molten salt bellows stop valve provided by the invention operates steadily, smooth and easy and good seal performance.But bellows self has elasticity, existing photo-thermal generating molten salt bellows stop valve does not generally arrange sealing configuration, under making bellows be in pressure medium all the time, there is potential safety hazard.
Summary of the invention
The technical problem to be solved in the present invention be to provide a kind of simple and reasonable, have multi-sealed, zero reveal photo-thermal generating molten salt bellows stop valve.
For solving the problems of the technologies described above, embodiments of the invention provide a kind of photo-thermal generating molten salt bellows stop valve, comprise valve body, be sealedly attached to the valve gap above valve body, the valve rod be arranged in valve gap, be arranged with bellows outside described valve rod, be positioned at the lower end inside of valve gap; Be provided with filler between valve rod above described bellows and valve gap, be installed with filler pressing sleeve above filler, be installed with hold-down grid above described filler pressing sleeve, described hold-down grid utilizes bolt assembly and the second pretension to compensate disc spring and is fixedly connected with valve gap.
In said structure, for guaranteeing that photo-thermal generating molten salt bellows stop valve is in pressure and the large situation of temperature fluctuation, keeps the sealability at filler place, adding the second pretension at hold-down grid bolt position and compensating disc spring, making hold-down grid have automatic load function.
Preferably, described filler is divided into upper and lower two-part, and centre is cut off by spacer ring, and namely filler position adopts compound ceramic fibrous filler+sealing caulking ring+compound ceramic fibrous filler double sealing structure, prevents medium from leaking from filler position.
Above-mentioned photo-thermal generating molten salt bellows stop valve also comprises bellows support, inner sheath and oversheath, described bellows support comprises the shaft extension portion be set between bellows and valve gap and the radial flange portions being shaped in shaft extension subordinate end, and described radial flange portions is located between valve gap and valve body;
Described inner sheath and oversheath are all placed between valve rod and shaft extension portion, and inner sheath is fixedly connected with the upper end in shaft extension portion, and described bellows is between inner sheath and oversheath.In said structure, valve gap and bellows support adopt ring to be connected, and are completely cut off in the body cavity combined at bellows and valve body by medium, prevent medium from leaking outside, and especially prevent medium from leaking outside from valve body and valve gap joint.
Wherein, the upper-end surface of described radial flange portions is connected with valve bonnet seal by setting-in the second U-shaped seal ring in the inner.
Above-mentioned photo-thermal generating molten salt bellows stop valve also comprises the flap being located at valve rod lower end, and the two ends of described valve body are respectively equipped with feed pathway and liquid outlet channel, is the channel partition shaping with valve body between described feed pathway and liquid outlet channel;
Described channel partition is provided with connecting port, is provided with valve seat inside it;
Upper end and the flap of described valve seat are sealed and matched, and lower end is tightly connected by the first U-shaped seal ring and channel partition.Preferably, the sealing surface of valve seat upper and lower end adopts supersonic spray coating STL12 powder; The sealing surface of flap lower end adopts supersonic spray coating STL21 powder.
Further, described valve gap is fixedly connected with valve body by bolt assembly and the first pretension compensation disc spring.Compensating disc spring by setting up the first pretension between valve body and valve gap, decreasing stud, nut produces creep under 600 DEG C of high temperature, cause valve body to be connected with valve gap to produce relaxing and causing the possibility of dielectric leakage.
Wherein, the top of described valve gap is provided with electric actuator, and the upper end of described valve rod is stretched out valve gap and is connected with electric actuator.
Wherein, the outer middle side part of described valve gap is provided with radiating fin, can make the temperature of electric actuator below 60 DEG C, guarantee that electric actuator normally works.
Preferably, described flap is shaped in the lower end of valve rod.Flap and valve rod, as integral type, decrease cooperation position, have effectively stopped seal failure, at high temperature also effectively can ensure sealing simultaneously.
The beneficial effect of technique scheme of the present invention is as follows:
In such scheme, adopt the sealing configuration that bellows and filler combine, when bellows in use damages, filler still seals, and extends the sealability of valve.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention one.
Description of reference numerals:
1, valve body;
2, the first U-shaped seal ring;
3, valve seat;
4, valve rod;
5, oversheath;
6, bellows support;
7, the second U-shaped seal ring;
8, the first pretension compensates disc spring;
9, bellows;
10, inner sheath;
11, valve gap;
12, filler;
13, spacer ring;
14, filler pressing sleeve;
15, hold-down grid;
16, the second pretension compensates disc spring;
17, electric actuator;
18, radiating fin.
Embodiment
For making the technical problem to be solved in the present invention, technological scheme and advantage clearly, be described in detail below in conjunction with the accompanying drawings and the specific embodiments.
The present invention is directed to the problems such as existing photo-thermal generating molten salt bellows stop valve sealing configuration is few, poor sealing performance, provide a kind of simple and reasonable, have multi-sealed, zero reveal photo-thermal generating molten salt bellows stop valve.
As shown in Figure 1, embodiments of the invention provide a kind of photo-thermal generating molten salt bellows stop valve, comprise valve body 1, be sealedly attached to the valve gap 11 above valve body, the valve rod 4 be arranged in valve gap 11, described valve gap 11 compensates disc spring 8 by bolt assembly and the first pretension and is fixedly connected with valve body 1, be arranged with bellows 9 outside described valve rod 4, be positioned at the lower end inside of valve gap 11.
Valve rod 4 above described bellows 9 and fill out between valve gap 11 and be provided with filler 12, be installed with above filler 12 above filler pressing sleeve 14, described filler pressing sleeve 14 and be installed with hold-down grid 15, described hold-down grid 15 utilizes bolt assembly and the second pretension to compensate disc spring 16 and is fixedly connected with valve gap 11.
Described filler 12 is divided into upper and lower two-part, and centre is cut off by spacer ring 13.
Above-mentioned photo-thermal generating molten salt bellows stop valve also comprises bellows support 6, inner sheath 10 and oversheath 5, and described inner sheath 10 and oversheath 5 are all placed between valve rod 4 and shaft extension portion, and bellows 9 is positioned between inner sheath 10 and oversheath 5.Described bellows support 6 comprises the shaft extension portion be set between bellows 9 and valve gap 11 and the radial flange portions being shaped in shaft extension subordinate end, and described radial flange portions is located between valve gap 11 and valve body 1, and inner sheath 10 welds with the upper end in shaft extension portion.
The upper-end surface of described radial flange portions is tightly connected with valve gap 11 by setting-in the second U-shaped seal ring 7 in the inner.
Above-mentioned photo-thermal generating molten salt bellows stop valve also comprises the flap being shaped in valve rod 4 lower end, and the two ends of described valve body 1 are respectively equipped with feed pathway and liquid outlet channel, is channel partition integrated with valve body 1 between feed pathway and liquid outlet channel.
Described channel partition is provided with connecting port, is provided with valve seat 3 inside it, and this valve seat 3 is replaceable.
Upper end and the flap of described valve seat 3 are sealed and matched, and lower end is tightly connected with channel partition by the first U-shaped seal ring 2.
The top of described valve gap 11 is provided with electric actuator 17, and the upper end of described valve rod 4 is stretched out valve gap 11 and is connected with electric actuator 17.
The outer middle side part of described valve gap 11 is provided with radiating fin 18, by increasing quantity and the area of radiating fin, makes the temperature of electric actuator below 60 DEG C, ensures that electric actuator can normally work.
When using this photo-thermal generating molten salt to use bellows stop valve, open electric actuator, valve rod rises, and flap is lifted off a seat gradually, and medium just can pass through runner, otherwise, valve rod decline, flap gradually close to valve seat until close contact, now valve closing.
The sealing configuration that the present invention adopts bellows and filler to combine, when bellows in use damages, filler still seals, and extends the sealability of valve.
The above is the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the prerequisite not departing from principle of the present invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.

Claims (9)

1. a photo-thermal generating molten salt bellows stop valve, comprises valve body, is sealedly attached to the valve gap above valve body, the valve rod be arranged in valve gap, be arranged with bellows, be positioned at the lower end inside of valve gap outside described valve rod; It is characterized in that, filler is provided with between valve rod above described bellows and valve gap, be installed with filler pressing sleeve above filler, be installed with hold-down grid above described filler pressing sleeve, described hold-down grid utilizes bolt assembly and the second pretension to compensate disc spring and is fixedly connected with valve gap.
2. photo-thermal generating molten salt bellows stop valve according to claim 1, is characterized in that, described filler is divided into upper and lower two-part, and centre is cut off by spacer ring.
3. photo-thermal generating molten salt bellows stop valve according to claim 1, it is characterized in that, also comprise bellows support, inner sheath and oversheath, described bellows support comprises the shaft extension portion be set between bellows and valve gap and the radial flange portions being shaped in shaft extension subordinate end, and described radial flange portions is located between valve gap and valve body;
Described inner sheath and oversheath are all placed between valve rod and shaft extension portion, and inner sheath is fixedly connected with the upper end in shaft extension portion, and described bellows is between inner sheath and oversheath.
4. photo-thermal generating molten salt bellows stop valve according to claim 3, is characterized in that, the upper-end surface of described radial flange portions is connected with valve bonnet seal by setting-in the second U-shaped seal ring in the inner.
5. photo-thermal generating molten salt bellows stop valve according to claim 1, it is characterized in that, also comprise the flap being located at valve rod lower end, the two ends of described valve body are respectively equipped with feed pathway and liquid outlet channel, are the channel partition shaping with valve body between described feed pathway and liquid outlet channel;
Described channel partition is provided with connecting port, is provided with valve seat inside it;
Upper end and the flap of described valve seat are sealed and matched, and lower end is tightly connected by the first U-shaped seal ring and channel partition.
6. photo-thermal generating molten salt bellows stop valve according to claim 1, is characterized in that, described valve gap compensates disc spring by bolt assembly and the first pretension and is fixedly connected with valve body.
7. the photo-thermal generating molten salt bellows stop valve according to claim 1 or 3, is characterized in that, the top of described valve gap is provided with electric actuator, and the upper end of described valve rod is stretched out valve gap and is connected with electric actuator.
8. the photo-thermal generating molten salt bellows stop valve according to claim 1 or 3, is characterized in that, the outside of described valve gap is provided with radiating fin.
9. photo-thermal generating molten salt bellows stop valve according to claim 5, is characterized in that, described flap is shaped in the lower end of valve rod.
CN201610025570.5A 2016-01-14 2016-01-14 Corrugated pipe stop valve for photo-thermal electricity generation fused salt Pending CN105508720A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610025570.5A CN105508720A (en) 2016-01-14 2016-01-14 Corrugated pipe stop valve for photo-thermal electricity generation fused salt

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610025570.5A CN105508720A (en) 2016-01-14 2016-01-14 Corrugated pipe stop valve for photo-thermal electricity generation fused salt

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Publication Number Publication Date
CN105508720A true CN105508720A (en) 2016-04-20

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105972309A (en) * 2016-06-23 2016-09-28 杭州电子科技大学 Self tracing sealing type lifting plate valve
CN108561563A (en) * 2018-05-31 2018-09-21 南通国电电站阀门股份有限公司 Nuclear power island heart bellows guide type screw down nonreturn valve

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202284679U (en) * 2011-10-14 2012-06-27 高东阀门有限公司 Corrugated pipe stop valve
CN202674328U (en) * 2012-07-05 2013-01-16 保一集团有限公司 Bellows globe valve
WO2013012144A1 (en) * 2011-07-20 2013-01-24 한양밸브공업 주식회사 Disk valve for cutting off turbo charger of large engine for ship
CN203585420U (en) * 2013-08-09 2014-05-07 凯瑞特阀业有限公司 Bellows three-link low-torque stop valve
CN104048049A (en) * 2013-03-13 2014-09-17 苏州科迪流体控制设备有限公司 Stop valve with irrotational valve rod
CN104455482A (en) * 2014-11-26 2015-03-25 浙江纽顿流体控制有限公司 Valve special for heat conductive oil

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013012144A1 (en) * 2011-07-20 2013-01-24 한양밸브공업 주식회사 Disk valve for cutting off turbo charger of large engine for ship
CN202284679U (en) * 2011-10-14 2012-06-27 高东阀门有限公司 Corrugated pipe stop valve
CN202674328U (en) * 2012-07-05 2013-01-16 保一集团有限公司 Bellows globe valve
CN104048049A (en) * 2013-03-13 2014-09-17 苏州科迪流体控制设备有限公司 Stop valve with irrotational valve rod
CN203585420U (en) * 2013-08-09 2014-05-07 凯瑞特阀业有限公司 Bellows three-link low-torque stop valve
CN104455482A (en) * 2014-11-26 2015-03-25 浙江纽顿流体控制有限公司 Valve special for heat conductive oil

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105972309A (en) * 2016-06-23 2016-09-28 杭州电子科技大学 Self tracing sealing type lifting plate valve
CN105972309B (en) * 2016-06-23 2018-07-27 杭州电子科技大学 One kind has follows closed type hoisting type plate valve certainly
CN108561563A (en) * 2018-05-31 2018-09-21 南通国电电站阀门股份有限公司 Nuclear power island heart bellows guide type screw down nonreturn valve

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Application publication date: 20160420

RJ01 Rejection of invention patent application after publication