CN109737210A - A kind of high-temperature molten salt pipeline valve - Google Patents
A kind of high-temperature molten salt pipeline valve Download PDFInfo
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- CN109737210A CN109737210A CN201910067186.5A CN201910067186A CN109737210A CN 109737210 A CN109737210 A CN 109737210A CN 201910067186 A CN201910067186 A CN 201910067186A CN 109737210 A CN109737210 A CN 109737210A
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- molten salt
- temperature molten
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Abstract
The invention discloses a kind of high-temperature molten salt pipeline valves, are related to valve technology field, include bracket and valve body, and rotation is provided with valve rod vertically in bracket and valve body, valve rod includes the lower section valve rod being connected with spool, and lower section valve rod is connected with upper section valve rod；It is provided with mounting head on lower section valve rod, is provided with clamping joint on upper section valve rod, and the mounting head after being engaged by clamping and is formed with thrust-compensating gap between clamping joint.In use, lower section valve rod bears the radial thrust of fused-salt medium to valve, and the thrust is conducted upwards along lower section valve rod to the junction of upper section valve rod and lower section valve rod；Because of the presence in the thrust-compensating gap between mounting head and clamping joint, the thrust of conduction to junction is seldom or will not conduct to upper section valve rod.The stem structure being engaged by clamping using multisection type, so that the gap very little of upper section valve rod and bracket, can effectively prevent moving up for fused-salt medium, high-temperature molten salt medium is avoided to be in contact with the graphite packing at stuffing-box.
Description
Technical field
The present invention relates to valve technology fields, more particularly, to a kind of high-temperature molten salt pipeline valve.
Background technique
Valve, be for control opening and closing pipeline, control flow direction, regulation and control pumped (conveying) medium parameter (temperature, pressure and
Flow) pipeline fittings.Valve can be used for controlling empty gas and water, steam, various corrosive medias, mud, oil product, liquid metal
The flowing of various types of fluid media (medium)s such as radiating medium.
Fused salt, the molten mass that salt is formed after melting, such as halide, nitrate, the sulfate of alkali metal, alkaline-earth metal
Molten mass.It is in solid-state under normal temperature and standard brick atmospheric pressure that fused salt, which is one kind, and after temperature raising is in the salt of liquid phase
Class.
In the prior art, valve has generally included bracket and valve body, and rotation is provided with valve rod, valve rod in bracket and valve body
It is connected with and extend out to the indoor spool of valve cavity, the valve seat being used cooperatively with spool, and bracket and valve body phase are provided in valve body
Junction is provided with packing seal structure.Packing seal structure mainly includes packing cavity and the filler that is set in packing cavity
Letter (also known as stuffing box), sealing device of the stuffing-box as valve stem part, playing prevents the media such as gas or liquid material
The effect of leakage.Stuffing-box mainly includes filler, packing ring and gland, and general common filler material is poly- four
Vinyl fluoride filler, graphite packing.
In valve in use, the high temperature and pressure fused salt of liquid phase can generate radial thrust effect to the valve rod of valve, fused salt is situated between
Matter can the minim gap between bracket and valve rod enter in valve stuffing box, the fused salt of high temperature can make the stone in stuffing-box
Black filler gasification, causes stuffing-box to reveal, the prior art exists can improvements.
Summary of the invention
In view of the above technical problems, the purpose of the present invention is to provide a kind of high-temperature molten salt pipeline valve, valve rod is arranged
For the member structure that multisection type is engaged by clamping, lower section valve rod bears thrust, and upper section valve rod is not subject to thrust, upper section valve rod and branch
The gap very little of frame, to achieve the purpose that obstruct high-temperature molten salt medium is in contact with the graphite packing in stuffing-box.
To achieve the above object, the present invention provides the following technical scheme that a kind of high-temperature molten salt pipeline valve, includes branch
Frame and the valve body for being connected and being formed chamber with bracket, and rotation is provided with valve rod vertically in the bracket and valve body, it is described
Valve rod, which is connected with, stretches to the indoor spool of chamber, and the valve rod is set as multisection type member structure, and the valve rod includes and valve
The lower section valve rod that core is connected, and the lower section valve rod is connected with the upper section valve rod being used cooperatively with holder pivots；The lower section
It is provided with mounting head on valve rod, is provided with clamping joint on the upper section valve rod, the clamping joint is engaged by clamping and real with mounting head
Now be driven, and be engaged by clamping after the mounting head and clamping joint between be formed with thrust weaken gap.
By using above-mentioned technical proposal, mutually it is engaged by clamping by upper section valve rod with lower section valve rod and constitutes complete valve rod knot
Structure, then valve in use, lower section valve rod bear fused-salt medium thrust, and the thrust along lower section valve rod conduct upwards to
The junction of upper section valve rod and lower section valve rod；Because the thrust between mounting head and clamping joint weakens the presence in gap, conduction is extremely
The thrust of junction is seldom or will not conduct to upper section valve rod.The stem structure being engaged by clamping using multisection type, lower section valve rod
Thrust is born, and upper section valve rod is not subject to substantially or seldom bears thrust, so that upper section valve rod and bracket
Gap very little can effectively prevent moving up for fused-salt medium, high-temperature molten salt medium is avoided to connect with the graphite packing at stuffing-box
Touching, and then achieve the purpose that improve high-temperature molten salt pipeline valve leakproofness.
The present invention is further arranged to: the lower section valve rod and valve body are connected with sliding bearing；And the upper section valve rod is set
The formula that sets as one member structure.
By using above-mentioned technical proposal, lower section valve rod is connected by sliding bearing with valve body, and sliding bearing works
Steadily, reliably, noiseless, be conducive to improve lower section valve rod and valve body fitment stability；And sliding bearing bears medium effect
Thrust on lower section valve rod.
The present invention is further arranged to: the lower section valve rod and valve body are connected with sliding bearing, and the upper section valve rod is set
It is set to multisection type member structure；The upper section valve rod includes multiple clamping engagement and the connection valve rod for realizing transmission, and is clamped
It is formed with transmission between the two adjacent connection valve rods after cooperation and weakens gap.
By using above-mentioned technical proposal, multisection type member structure is set by upper section valve rod；When acting on spool
When thrust is larger, after thrust conducts to junction along lower section valve rod and weakens gap weakening via thrust, still there is a small amount of thrust
It acts on the connection valve rod being connected with lower section valve rod, then weakens gap into one via the transmission between adjacent two connections valve rod
Step weakens.Multi-stag upper section stem structure is conducive to weaken the thrust in a small amount of conduction to connection valve rod, so reach into
One step reduces the purpose in the gap of upper section valve rod and bracket.
The present invention is further arranged to: being opened up respectively in the mounting head and clamping joint and is formed with crosswise recess and cross
Shape protrusion, and the crosswise protrusion is embedded and is connected in corresponding crosswise recess.
By using above-mentioned technical proposal, crosswise recess and crosswise protrusion match realization mounting head and clamping joint
It connects and fixes, that is, realizes the clamping engagement of lower section valve rod and upper section valve rod, and cooperate between crosswise recess and crosswise protrusion
The gap of formation is that thrust weakens gap；And the installation fixed form that crosswise recess and crosswise protrusion match is convenient for peace
The fixed upper section valve rod of personnel positioning is filled, while being conducive to improve the connective stability of upper section valve rod and lower section valve rod.
The present invention is further arranged to: being opened up respectively in the mounting head and clamping joint and is formed with blocky groove and bulk is convex
Block, and the blocky convex block is embedded and is connected in corresponding blocky groove.
By using above-mentioned technical proposal, blocky groove and blocky convex block match the clamping for realizing mounting head and clamping joint
It is fixed, that is, realize the clamping engagement of lower section valve rod and upper section valve rod, and between cooperatively forming between blocky groove and bulk convex block
Gap is that thrust weakens gap；And the installation fixed form that blocky convex block and blocky groove match is conducive to improve upper section valve rod
With the connection structure intensity of lower section valve rod, while increase thrust weaken gap spacing, pushed away with being adapted to biggish fused-salt medium
Power effect.
The present invention is further arranged to: seal chamber is formed between the valve rod and bracket, the seal chamber is located at filler
Below letter, and stacked up and down upper voussoir and lower wedge block being provided in the seal chamber, the upper voussoir encircles the outer circle of valve rod,
The lower wedge block is set between the internal chamber wall of seal chamber and upper voussoir, and the upper voussoir and lower wedge block mutual extrusion are arranged.
By using above-mentioned technical proposal, gap between upper voussoir and lower wedge block mutual cooperation sealed valve stem and bracket,
Gap between i.e. upper voussoir and lower wedge block mutual extrusion plug rack and valve rod, with obstruct high-temperature molten salt from bracket and valve rod it
Between gap enter at stuffing-box, to achieve the purpose that improve high-temperature molten salt pipeline valve tightness, and then reach raising
The purpose of high-temperature molten salt pipeline stability in use.
The present invention is further arranged to: the lower end of the upper voussoir is formed with annular slope, the upper end of the lower wedge block
It is formed with lower annular slope, and the upper annular slope abuts setting in inclined-plane with lower annular slope.
By using above-mentioned technical proposal, structure is contacted in inclined-plane between upper voussoir and lower wedge block, upper voussoir is under
Voussoir is tightly combined, and is conducive to improve the leakproofness between valve rod and bracket.
The present invention is further arranged to: the valve rod, upper voussoir and lower wedge block three are resilient abutting setting.
By using above-mentioned technical proposal, upper voussoir and lower wedge block are resilient extrusion fit structure, upper voussoir and lower wedge block
Combination more closely, be conducive to further increase the leakproofness between valve rod and bracket；And the set-up mode phase that elasticity squeezes
For the set-up mode rigidly squeezed, be conducive to the compensatory and leakproofness for improving mechanical sealing structure.Upper voussoir and
Valve rod is resilient extrusion fit structure, and the combination of upper voussoir and valve rod more closely, is conducive to further increase valve rod and bracket
Between leakproofness；And for the set-up mode of elasticity extruding is compared to the set-up mode rigidly squeezed, be conducive to improve valve rod
The smoothness of rotational motion.
The present invention is further arranged to: the top and bottom end of the seal chamber are respectively arranged with elastic component and gasket ring, and institute
It states gasket ring to be threadedly coupled with seal chamber, the elastic component is for driving downwards upper voussoir sufficiently to be combined with lower wedge block；The elasticity
Part matches the fixed upper voussoir of installation and lower wedge block with gasket ring.
By using above-mentioned technical proposal, elastic component matches the upper voussoir of completion with gasket ring and the installation of lower wedge block is fixed,
And upper voussoir and the extrusion fit of lower wedge block elasticity are driven, for the fit system rigidly squeezed compared to upper voussoir and lower wedge block,
The former is conducive to improve the compactness and accuracy of voussoir Yu lower wedge block extrusion fit.
In conclusion the invention has the following advantages:
First, the stem structure being engaged by clamping using multisection type and the thrust weakening for cooperating lower section valve rod with upper section valve rod junction
Gap, lower section valve rod bears thrust, and upper section valve rod is not subject to substantially or seldom bears thrust, so that upper section
The gap very little of valve rod and bracket can effectively prevent moving up for fused-salt medium, avoid at high-temperature molten salt medium and stuffing-box
Graphite packing is in contact, and then achievees the purpose that improve high-temperature molten salt pipeline valve leakproofness；
Second, the gap between upper voussoir and lower wedge block mutual cooperation sealed valve stem and bracket, to obstruct high-temperature molten salt from bracket
Gap between valve rod enters at stuffing-box, to achieve the purpose that improve high-temperature molten salt pipeline valve tightness；
Third, user can perhaps practical manufacturing condition selects upper section valve rod or choosing using integral type according to actual condition
The cooperation peace selected the upper section valve rod using multi-segment structure, and crosswise protrusion and crosswise can be selected to be recessed according to actual needs
Assembling structure, or select blocky convex block and blocky groove are coupled structure, have good practicability and suitability.
Detailed description of the invention
Fig. 1 is a kind of diagrammatic cross-section of high-temperature molten salt pipeline valve；
Fig. 2 is the enlarged diagram in the portion A in Fig. 1 when the setting of upper section valve rod is an integral structure；
Fig. 3 is to be mainly used for showing that the part of the connection structure of connection valve rod is put when upper section valve rod is set as multi-segment structure
Big schematic diagram；
Fig. 4 is primarily used for showing the perspective view of the explosion of crosswise protrusion and crosswise sunk structure；
Fig. 5 is primarily used for showing the perspective view of the explosion of blocky convex block and blocky groove structure.
Appended drawing reference: 1, bracket；2, valve body；3, chamber；4, valve rod；41, upper section valve rod；411, clamping joint；411-A, ten
Shape protrusion；411-B, blocky convex block；42, lower section valve rod；421, mounting head；421-A, crosswise recess；421-B, bulk are recessed
Slot；5, spool；6, stuffing-box；7, mechanical sealing structure；71, upper voussoir；711, annular inclined-plane；712, upper annular slope；
72, lower wedge block；721, lower annular slope；73, elastic component；74, gasket ring；75, gasket；8, seal chamber；81, chamber is installed；82, it adjusts
Save chamber；9, valve rod is connected.
Specific embodiment
Below in conjunction with attached drawing, invention is further described in detail.
Embodiment one:
Referring to figs. 1 and 2, the valve body that a kind of high-temperature molten salt pipeline valve includes bracket 1 and is installed on bracket 1
2, and chamber 3 is formed in valve body 2, rotation is provided with valve rod 4 vertically in bracket 1 and valve body 2, and valve rod 4 is connected with and stretches to
Spool 5 in chamber 3.During using valve, high-temperature liquid-phase fused-salt medium can generate valve rod 4 and flow to direction along medium
The thrust of application, valve rod 4 are generating micro gap between bracket 1 under the thrust；And high-temperature liquid-phase fused-salt medium
Can the micro gap between valve rod 4 and bracket 1 enter at stuffing-box 6, be in contact with the graphite packing in stuffing-box 6 and gas
Graphite filler causes stuffing-box 6 to reveal.Therefore, in the present invention, multisection type member structure is set by valve rod 4, and in valve
Mechanical sealing structure 7 is set between bar 4 and bracket 1, i.e., above two mode, which matches to reach, prevents high-temperature liquid-phase fused salt from being situated between
Matter moves up, and avoids the purpose being in contact with the graphite packing at stuffing-box 6.
In the present embodiment, valve rod 4 is set as two-part member structure, includes the lower section valve rod being connected with spool 5
42 and the upper section valve rod 41 that is connected with lower section valve rod 42, upper section valve rod 41 be rotatably assorted with bracket 1, and lower section valve rod 42 is logical
Sliding bearing is crossed to be connected with valve body 2.The upper end of lower section valve rod 42 is formed with mounting head 421, and the lower end of upper section valve rod 41 is formed
There is clamping joint 411, and the mounting head 421 of the clamping joint 411 of upper section valve rod 41 and lower section valve rod 42 is engaged by clamping fixed and realizes
The actuation of valve rod 4.It is formed with thrust between mounting head 421 after clamping engagement and clamping joint 411 and weakens gap, valve exists
In use process, lower section valve rod 42 bears the thrust of fused-salt medium, and the thrust is conducted upwards along lower section valve rod 42 to upper section valve
The junction of bar 41 and lower section valve rod 42；Because the thrust between mounting head 421 and clamping joint 411 weakens the presence in gap, pass
It is directed at the thrust of junction seldom or will not conduct to upper section valve rod 41.4 structure of valve rod being engaged by clamping using two-part, under
Section valve rod 42 bears thrust, and upper section valve rod 41 is not subject to substantially or seldom bears thrust, so that upper section valve
The gap very little of bar 41 and bracket 1 can effectively prevent moving up for fused-salt medium from being in contact with the graphite packing at stuffing-box 6.
As shown in connection with fig. 4, upper section valve rod 41 and lower section valve rod 42 realize the first snap-fit of transmission: mounting head
It is opened up on 421 and is formed with crosswise recess 421-A, extended to form crosswise protrusion 411-A, and crosswise on clamping joint 411
Recess 421-A is embedded clamping engagement with crosswise protrusion 411-A phase, and crosswise is recessed between 421-A and crosswise protrusion 411-A
The gap cooperatively formed is that thrust weakens gap.The installation that crosswise recess 421-A and crosswise protrusion 411-A is matched is solid
Determine mode and be easily installed the fixed upper section valve rod 41 of personnel positioning, while being conducive to improve the company of upper section valve rod 41 and lower section valve rod 42
Connect stability.
As shown in connection with fig. 5, upper section valve rod 41 and lower section valve rod 42 realize second of snap-fit of transmission: mounting head
Opened up on 421 and be formed with blocky groove 421-B, extended to form blocky convex block 411-B on clamping joint 411, and block-like recesses and
Blocky convex block 411-B phase is embedded clamping engagement, and the gap cooperatively formed between blocky groove 421-B and blocky convex block 411-B is i.e.
Weaken gap for thrust.The installation fixed form that blocky convex block 411-B and bulk groove 421-B are matched is conducive to improve upper section
The connection structure intensity of valve rod 41 and lower section valve rod 42, while increasing the spacing that thrust weakens gap, it is biggish molten to be adapted to
Salt medium thrust.
Referring to figs. 1 and 2, seal chamber 8 is formed between valve rod 4 and bracket 1, mechanical sealing structure 7 is embedded at
In the seal chamber 8, and mechanical sealing structure 7 includes stacked up and down upper voussoir 71 and lower wedge block 72.Upper voussoir 71 is surround
Embrace set on valve rod 4 outer circle outside, lower wedge block 72 is set between the internal chamber wall of seal chamber 8 and upper voussoir 71, and upper voussoir 71 with
The mutually elasticity of lower wedge block 72 squeezes, and enters valve stuffing box to reach gap of the barrier high-temperature molten salt between valve rod 4 and bracket 1
In 6, to achieve the purpose that improve high-temperature molten salt pipeline valve tightness.
Upper voussoir 71 and lower wedge block 72 are disposed as the ring type structure being coaxially disposed with valve rod 4, and upper voussoir 71 and valve rod 4
The annular surface for being arranged contact is set as annular inclined-plane 711, the annular surface that the lower end of upper voussoir 71 is abutted with 72 elasticity of lower wedge block
It is set as annular slope 712, and the annular surface that the upper end of lower wedge block 72 is abutted with upper 71 elasticity of voussoir is set as lower circular slanting
Face 721；Annular inclined-plane 711, upper annular slope 712 and 721 three of lower annular slope set towards the inclination of the direction of valve rod 4
It sets.When upper voussoir 71 combined with lower wedge block 72 and be sheathed on valve rod 4 it is outer when, 72 coaxial sleeve of lower wedge block be set to upper voussoir 71 under
End, and upper annular slope 712 is abutted with lower 721 phase elasticity of annular slope；Upper 71 coaxial sleeve of voussoir is set to outside the outer circle of valve rod 4,
And annular inclined-plane 711 is abutted with the outer circle elasticity of valve rod 4.
Installation personnel is when voussoir 71 and lower wedge block 72 are installed in extruding, upper annular slope 712 and lower 721 phase of annular slope
The part of contact occurs elastic deformation and is bonded completely, and upper annular slope 712 and lower annular slope 721 not in contact with part still
Keep discrete state；And elastic deformation and complete with the outer circle of valve rod 4 occurs under the action of resilient pressing force for annular inclined-plane 711
Full fitting, to achieve the purpose that further increasing voussoir 71 is combined leakproofness with lower wedge block 72.
The fixed upper voussoir 71 of installation personnel installation and lower wedge block 72, the top of seal chamber 8 are provided with elastic component
73(elastic component 73 may be configured as the elements such as spring, spring washer, be set as butterfly spring in the present embodiment), and the lower part of seal chamber 8 is opened
It is provided with gasket 75 at mouthful, i.e. gasket 75 is located between bracket 1 and valve body 2.Seal chamber 8 is set as multisection type chamber structure,
Seal chamber 8 includes the installation chamber 81 from top to bottom coaxially opened up and adjusts chamber 82, and elastic component 73 and upper voussoir 71 are whole
It is set in installation chamber 81, and the upper end of lower wedge block 72 is predominantly located in installation chamber 81, the small portion in the lower end of lower wedge block 72
Quartile is in adjusting chamber 82；And adjust and be coaxially arranged with gasket ring 74 in chamber 82, gasket ring 74 is threadedly coupled with chamber 82 is adjusted
Fixed, i.e., elastic component 73 matches the fixed upper voussoir 71 of installation and lower wedge block 72 with 74 the two of gasket ring.
The present embodiment is further elaborated below with reference to the conduction of thrust:
During using valve, high-temperature liquid-phase fused-salt medium can generate radial thrust effect, and the radial thrust to spool 5
Effect is transferred to the junction of mounting head 421 Yu clamping joint 411 along lower section valve rod 42, and the thrust weakens gap in thrust
Weakening effect under will not generate active force (or only minimum active force generate) to upper section valve rod 41, then upper section valve rod 41
With the gap very little of bracket 1, can effectively prevent to move on fused-salt medium at stuffing-box 6.
The present embodiment is further elaborated below with reference to the installation of mechanical sealing structure:
Elastic component 73, upper voussoir 71, lower wedge block 72 and gasket ring 74 are from top to bottom successively installed on seal chamber 8 by installation personnel
Interior, i.e., upper voussoir 71, lower wedge block 72 are mounted in seal chamber 8 and realize in the case where elastic component 73 and gasket ring 74 cooperate jointly
Elasticity contacts；And during the installation process, under the action of resilient pressing force bullet occurs for the annular inclined-plane 711 of upper voussoir 71
Property deformation and the outer circle of valve rod 4 fit, and the upper annular slope 712 of upper voussoir 71 and the lower annular slope 721 of lower wedge block 72 exist
Elastic deformation occurs under the action of resilient pressing force and is bonded to each other.
Embodiment two:
In conjunction with shown in Fig. 1 and Fig. 3, a kind of high-temperature molten salt pipeline valve, the difference with embodiment one is, upper section valve rod 41 is arranged
For multisection type member structure (being in the present embodiment the upper section valve rod 41 of two-part).Upper section valve rod 41 includes that multiple clampings are matched
Merge realize the connection of the connection valve rod 9(connection valve rod 9 of transmission be located at sliding bearing and mechanical sealing structure 7 it
Between), and be formed with transmission between two adjacent connection valve bars 9 after clamping engagement and weaken gap；When the radial direction acted on spool 5
When thrust is larger, after thrust conducts to junction along lower section valve rod 42 and weakens gap weakening via thrust, still there is a small amount of push away
Power acts on the connection valve rod 9 being connected with lower section valve rod 42, and a small amount of thrust weakens via the transmission of connection valve rod 9 again
Gap further weakens, up to no thrust is on the connection valve rod 9 of 1 upper end of bracket.The upper section valve rod 41 of multisection type
Be conducive to further weaken the thrust in a small amount of conduction to connection valve rod 9, and then reach and further decrease upper section valve rod 41
With the purpose in the gap of bracket 1.
In conjunction with shown in Fig. 4 and Fig. 5, mounting head 421 and clamping can be used between the adjacent two connections valve rod 9 of upper section valve rod 41
The company that connection type between first 411, i.e. selection are engaged by clamping using crosswise recess 421-A with crosswise protrusion 411-A phase
Mode, or the connection type that selection is engaged by clamping using bulk groove 421-B with blocky convex block 411-B phase are connect, is passed with being formed
It is dynamic to weaken gap.
The present embodiment is further elaborated below with reference to the conduction of thrust:
During using valve, high-temperature liquid-phase fused-salt medium can generate thrust to spool 5, and the thrust is under
Section valve rod 42 is transferred to the junction of mounting head 421 Yu clamping joint 411, and the thrust is made in the weakening that thrust weakens gap
Upper section valve rod 41 will not be generated active force (or only minimum active force generates) with lower.When acting on pushing away on spool 5
When power is larger, after thrust conducts to junction along lower section valve rod 42 and weakens gap weakening via thrust, still there is a small amount of thrust
It acts on the connection valve rod 9 being connected with lower section valve rod 42, a small amount of thrust is cut via the transmission between connection valve rod 9 again
Weak gap further weakens, up to no thrust in close to 1 upper end of bracket connection valve rod 9 on, i.e., without thrust in upper
On section valve rod 41, then the gap very little of upper section valve rod 41 and bracket 1, can effectively prevent to move on fused-salt medium at stuffing-box 6.
The present embodiment is further elaborated below with reference to the installation of mechanical sealing structure:
Elastic component 73, upper voussoir 71, lower wedge block 72 and gasket ring 74 are from top to bottom successively installed on seal chamber 8 by installation personnel
Interior, i.e., upper voussoir 71, lower wedge block 72 are mounted in seal chamber 8 and realize in the case where elastic component 73 and gasket ring 74 cooperate jointly
Elasticity contacts；And during the installation process, under the action of resilient pressing force bullet occurs for the annular inclined-plane 711 of upper voussoir 71
Property deformation and the outer circle of valve rod 4 fit, and the upper annular slope 712 of upper voussoir 71 and the lower annular slope 721 of lower wedge block 72 exist
Elastic deformation occurs under the action of resilient pressing force and is bonded to each other.
Present embodiment is only explanation of the invention, is not limitation of the present invention, art technology
Personnel can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but as long as
All by the protection of Patent Law in scope of the presently claimed invention.
Claims (9)
1. a kind of high-temperature molten salt pipeline valve includes bracket (1) and is connected with bracket (1) and forms the valve of chamber (3)
Body (2), and rotation is provided with valve rod (4) vertically in the bracket (1) and valve body (2), the valve rod (4), which is connected with, stretches to chamber
Spool (5) in room (3), it is characterised in that: the valve rod (4) is set as multisection type member structure, and the valve rod (4) includes
The lower section valve rod (42) that is connected with spool (5), and the lower section valve rod (42) is connected with to be rotatably assorted with bracket (1) and use
Upper section valve rod (41)；It is provided with mounting head (421) on the lower section valve rod (42), is provided with clamping on the upper section valve rod (41)
Head (411), the clamping joint (411) and mounting head (421) are engaged by clamping and realize transmission, and the installation after clamping engagement
It is formed with thrust between head (421) and clamping joint (411) and weakens gap.
2. a kind of high-temperature molten salt pipeline valve according to claim 1, it is characterised in that: the lower section valve rod (42) and valve
Body (2) is connected with sliding bearing；And the upper section valve rod (41) is set as integral type member structure.
3. a kind of high-temperature molten salt pipeline valve according to claim 1, it is characterised in that: the lower section valve rod (42) and valve
Body (2) is connected with sliding bearing, and the upper section valve rod (41) is set as multisection type member structure；Upper section valve rod (41) packet
Include multiple clamping engagement and realize the connection valve rods (9) of transmission, and the two adjacent connection valve rods (9) after being engaged by clamping it
Between be formed with transmission weaken gap.
4. a kind of high-temperature molten salt pipeline valve according to claim 1 to 3, it is characterised in that: the mounting head
(421) and on clamping joint (411) it opens up respectively and is formed with crosswise recess (421-A) and crosswise protrusion (411-A), and is described
Crosswise protrusion (411-A), which is embedded, to be connected in corresponding crosswise recess (421-A).
5. a kind of high-temperature molten salt pipeline valve according to claim 1 to 3, it is characterised in that: the mounting head
(421) and on clamping joint (411) it opens up respectively and is formed with blocky groove (421-B) and blocky convex block (411-B), and the bulk
Convex block (411-B), which is embedded, to be connected in corresponding blocky groove (421-B).
6. a kind of high-temperature molten salt pipeline valve according to claim 1, it is characterised in that: the valve rod (4) and bracket (1)
Between be formed with seal chamber (8), the seal chamber (8) is located at below stuffing-box (6), and is provided in the seal chamber (8)
Stacked upper voussoir (71) and lower wedge block (72), the upper voussoir (71) encircle the outer circle of valve rod (4), the lower wedge block (72) down
It is set between the internal chamber wall of seal chamber (8) and upper voussoir (71), and the upper voussoir (71) and lower wedge block (72) mutual extrusion
Setting.
7. a kind of high-temperature molten salt pipeline valve according to claim 6, it is characterised in that: the lower end of the upper voussoir (71)
It is formed with annular slope (712), the upper end of the lower wedge block (72) is formed with lower annular slope (721), and the upper annular
Inclined-plane (712) abuts setting in inclined-plane with lower annular slope (721).
8. a kind of high-temperature molten salt pipeline valve according to claim 7, it is characterised in that: the valve rod (4), upper voussoir
(71) and lower wedge block (72) three is resilient abutting setting.
9. a kind of high-temperature molten salt pipeline valve according to claim 6, it is characterised in that: the top of the seal chamber (8)
It is respectively arranged with elastic component (73) and gasket ring (74) with bottom end, and the gasket ring (74) is threadedly coupled with seal chamber (8), the bullet
Property part (73) for driving upper voussoir (71) and lower wedge block (72) sufficiently to combine downwards；The elastic component (73) and gasket ring (74) phase
It is coupled fixed upper voussoir (71) and lower wedge block (72).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910067186.5A CN109737210B (en) | 2019-01-24 | 2019-01-24 | High-temperature molten salt pipeline valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910067186.5A CN109737210B (en) | 2019-01-24 | 2019-01-24 | High-temperature molten salt pipeline valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109737210A true CN109737210A (en) | 2019-05-10 |
| CN109737210B CN109737210B (en) | 2020-10-09 |
Family
ID=66365909
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910067186.5A Active CN109737210B (en) | 2019-01-24 | 2019-01-24 | High-temperature molten salt pipeline valve |
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| CN109737210B (en) | 2020-10-09 |
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