CN114645953B - Oblique runner anti-freezing and blocking fused salt gate valve - Google Patents
Oblique runner anti-freezing and blocking fused salt gate valve Download PDFInfo
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- CN114645953B CN114645953B CN202210280137.1A CN202210280137A CN114645953B CN 114645953 B CN114645953 B CN 114645953B CN 202210280137 A CN202210280137 A CN 202210280137A CN 114645953 B CN114645953 B CN 114645953B
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- 150000003839 salts Chemical class 0.000 title claims abstract description 33
- 238000007710 freezing Methods 0.000 title claims abstract description 15
- 230000000903 blocking effect Effects 0.000 title abstract description 5
- 230000007423 decrease Effects 0.000 claims abstract description 8
- 238000007789 sealing Methods 0.000 claims description 61
- 238000010438 heat treatment Methods 0.000 claims description 44
- 238000012856 packing Methods 0.000 claims description 38
- 210000000078 claw Anatomy 0.000 claims description 15
- 230000006835 compression Effects 0.000 claims description 12
- 238000007906 compression Methods 0.000 claims description 12
- 238000009413 insulation Methods 0.000 claims description 11
- 239000000945 filler Substances 0.000 claims description 9
- 210000004907 gland Anatomy 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 9
- 238000004321 preservation Methods 0.000 claims description 9
- 125000006850 spacer group Chemical group 0.000 claims description 7
- 239000011521 glass Substances 0.000 claims description 4
- 239000011490 mineral wool Substances 0.000 claims description 4
- 230000002528 anti-freeze Effects 0.000 claims 6
- 238000000034 method Methods 0.000 claims 1
- 230000008014 freezing Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 11
- 238000005516 engineering process Methods 0.000 description 6
- 238000009434 installation Methods 0.000 description 6
- 238000010248 power generation Methods 0.000 description 5
- 238000005192 partition Methods 0.000 description 4
- 238000005338 heat storage Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 208000001034 Frostbite Diseases 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 206010053615 Thermal burn Diseases 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
- F16K3/12—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 wedge-shaped arrangements of sealing faces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B17/00—Methods preventing fouling
- B08B17/02—Preventing deposition of fouling or of dust
-
- 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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
- F16J15/062—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces characterised by the geometry of the seat
-
- 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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
- F16J15/08—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with exclusively metal packing
-
- 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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/04—Construction of housing; Use of materials therefor of sliding valves
- F16K27/044—Construction of housing; Use of materials therefor of sliding valves slide valves with flat obturating members
- F16K27/047—Construction of housing; Use of materials therefor of sliding valves slide valves with flat obturating members with wedge-shaped obturating 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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/08—Guiding yokes for spindles; Means for closing housings; Dust caps, e.g. for tyre valves
-
- 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
- F16K41/00—Spindle sealings
- F16K41/02—Spindle sealings with stuffing-box ; Sealing rings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K49/00—Means in or on valves for heating or cooling
- F16K49/002—Electric heating means
-
- 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
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L59/00—Thermal insulation in general
- F16L59/04—Arrangements using dry fillers, e.g. using slag wool which is added to the object to be insulated by pouring, spreading, spraying or the like
-
- 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
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L59/00—Thermal insulation in general
- F16L59/14—Arrangements for the insulation of pipes or pipe systems
- F16L59/16—Arrangements specially adapted to local requirements at flanges, junctions, valves or the like
- F16L59/161—Housings for valves, tee pieces, or the like
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Details Of Valves (AREA)
Abstract
The invention discloses an anti-freezing and anti-blocking fused salt gate valve of an inclined flow passage, which comprises a valve body, a valve rod, a valve cover and a gate plate, wherein a first flow passage and a second flow passage which extend inwards are respectively arranged at two ends of the valve body; the bottom of the first flow channel is provided with a first slope, the height of the first slope gradually decreases in the direction away from the overflow cavity, the bottom of the second flow channel is provided with a second slope, the height of the second slope gradually decreases in the direction away from the overflow cavity, and a backflow channel for communicating the concave cavity with the first flow channel is formed in the first slope. The invention has the function of preventing freezing and blocking, thereby ensuring that the flashboard and the valve seat can be effectively matched and sealed and avoiding the occurrence of the condition of internal leakage of the valve.
Description
Technical Field
The invention relates to the technical field of valve structures, in particular to an anti-freezing and blocking fused salt gate valve for an inclined flow passage.
Background
The photo-thermal power generation molten salt technology is a novel trough type technology which directly adopts molten salt as a heat absorption, heat transfer and heat storage working medium, is a novel photo-thermal power generation technology which is different from the traditional heat conduction oil heat transfer and molten salt heat storage, and adopts binary molten salt as a heat storage medium in tower type technology, disc type technology and Fresnel type photo-thermal power generation technology routes. Because the molten salt is a heat transfer and storage medium with low cost, long service life, good heat transfer and storage performance, high heat flux and low operating pressure, the molten salt is adopted as a heat transfer and storage working medium for photo-thermal power generation, so that the thermal efficiency of a photo-thermal power generation system, the reliability and the economy of the system can be obviously improved, the realization of continuous and stable operation of a photo-thermal power station is facilitated, and the photo-thermal power station has been widely accepted.
The molten salt valve commonly used at present generally comprises a valve body, a valve rod, a valve cover and a flashboard, wherein a first flow passage and a second flow passage which extend inwards are respectively arranged at two ends of the valve body, an overflow cavity is arranged between the first flow passage and the second flow passage, the valve cover is arranged at the upper end of a valve neck of the valve body, the valve rod penetrates through the valve cover and stretches into the overflow cavity to be connected with the flashboard in a linkage manner, and a valve seat used for forming sealing fit with the flashboard is respectively arranged at two sides of the flashboard in the overflow cavity. The valve body inner wall is located the position of flashboard below and normally has the cavity that is linked together with the overflow chamber to guarantee to ensure the effective stroke of flashboard, make the flashboard can carry out effectual sealed cooperation with the disk seat, but because there is the fused salt to remain in this concave part down, cause the salt deposit liquid phenomenon easily, make the valve take place to freeze stifled, thereby cause the hindrance to the motion of flashboard, make the flashboard unable lower extreme position that reaches, lead to the flashboard unable and the disk seat of formation effectual sealed cooperation and produce the valve internal leakage.
Therefore, a diagonal flow antifreezing and plugging molten salt gate valve is needed in the market to solve the problems.
Disclosure of Invention
The invention aims to provide an anti-freezing and anti-blocking fused salt gate valve for an inclined flow passage, which has an anti-freezing and anti-blocking function, so that a gate plate and a valve seat can be effectively matched and sealed, and the occurrence of internal leakage of the valve is avoided.
In order to achieve the above purpose, the present invention provides the following technical solutions: the anti-freezing and anti-blocking molten salt gate valve comprises a valve body, a valve rod, a valve cover and a gate plate, wherein a first flow channel and a second flow channel which extend inwards are respectively arranged at two ends of the valve body, an overflow cavity is arranged between the first flow channel and the second flow channel, the valve cover is arranged at the upper end of a valve neck of the valve body, the valve rod penetrates through the valve cover and stretches into the overflow cavity to be in linkage connection with the gate plate, a valve seat used for forming sealing fit with the gate plate is respectively arranged at two sides of the gate plate in the overflow cavity, and a concave cavity communicated with the overflow cavity is arranged at the position, below the gate plate, of the inner wall of the valve body; the bottom of the first flow channel is provided with a first slope, the height of the first slope gradually decreases in the direction away from the overflow cavity, the bottom of the second flow channel is provided with a second slope, the height of the second slope gradually decreases in the direction away from the overflow cavity, and a backflow channel used for communicating the concave cavity with the first flow channel is formed in the first slope.
Through adopting above-mentioned technical scheme, when the valve is closed, the fused salt in the cavity can flow to first runner through the backward flow passageway, avoids producing the salt deposit liquid phenomenon in the cavity, causes the freeze of valve to stop up to have first slope and second slope on first runner and the second runner, can play the effect of water conservancy diversion, avoid the fused salt to pile up in flashboard both sides, further promoted the stifled effect of preventing frostbite of valve, guaranteed that flashboard and disk seat can effectively cooperate sealedly, avoid the condition emergence of leaking in the valve.
The valve cover is further provided with a metal elliptical pad, the valve cover is connected with the valve neck through a bolt, a first V-shaped sealing groove which is in a closed loop is arranged on the lower end face of the valve cover, a second V-shaped sealing groove which is in a closed loop is arranged on the upper end face of the valve neck, the upper portion of the metal elliptical pad is embedded in the first V-shaped sealing groove, and the lower portion of the metal elliptical pad is embedded in the second V-shaped sealing groove.
By adopting the technical scheme, the tightness between the valve cover and the valve neck can be improved, and the leakage of medium inside the valve from the gap between the valve cover and the valve neck is avoided.
The invention is further characterized in that the hollow bracket is arranged at the upper end of the valve cover through a bolt, an electric device is arranged at the upper end of the bracket, and the output end of the electric device is connected with the upper end of the valve rod in a linkage way.
By adopting the technical scheme, the valve is opened and closed by utilizing the electric device to operate the valve rod, and the operation is very easy and convenient.
The invention further provides a sealing assembly, which comprises a packing pad, a first sealing packing, a packing spacer ring, a second sealing packing, a packing pressing sleeve and a packing pressing plate, wherein a sealing cavity coaxial with a valve rod is arranged in the middle of the valve cover, the second sealing packing, the packing spacer ring, the first sealing packing and the packing pad are sequentially arranged in the sealing cavity from top to bottom, and the packing pressing plate is connected with a bracket through a slipknot bolt and presses the packing pressing sleeve at the upper end of the second sealing packing.
By adopting the technical scheme, the tightness between the valve rod and the valve cover can be improved, so that internal medium is prevented from leaking from a gap between the valve rod and the valve cover.
The invention further provides that the sealing assembly further comprises a tubular upper sealing seat, a limiting step is arranged in the valve cover, the upper sealing seat is sleeved between the valve rod and the limiting step, the upper sealing seat is in interference fit with the limiting step, a limiting flange extending from the periphery is further arranged at the lower end of the upper sealing seat, and the limiting flange abuts against the lower end face of the limiting step.
Through adopting above-mentioned technical scheme, go up the seal receptacle and not only can play the effect of direction, can further promote the leakproofness between valve rod and the valve gap moreover to effectively avoid inside medium to leak from the clearance between the two.
The invention is further characterized in that an observation port is arranged on the side part of the bracket, and a dustproof glass window is arranged on the observation port.
Through adopting above-mentioned technical scheme, can avoid the dust to enter into in the seal assembly, influence seal assembly's the sealed effect.
The invention further provides a heating assembly, wherein a preheating cavity is arranged at the position, located between the upper sealing seat and the sealing cavity, of the inner side of the valve cover, the heating assembly is arranged at the position, located at the periphery of the sealing cavity, of the valve cover, and the heating assembly comprises a heating wire which is wound around the periphery of the valve cover.
Through adopting above-mentioned technical scheme, utilize the heater to supplement heat for the valve gap, avoid valve gap position temperature low and make inside fused salt produce crystallization, played the stifled effect of preventing frostbite.
The heating assembly further comprises an annular pressing seat, two positioning rings and a plurality of compression screws, wherein an annular mounting groove is formed in the periphery of the valve cover, screw positioning grooves used for embedding heating wires are formed in the annular mounting groove, the two positioning rings are sleeved on the annular mounting groove to form a cylindrical structure, the heating wires are pressed and fixed in the screw positioning grooves by the two positioning rings, a wire passing hole used for the heating wires to pass through is formed in the two positioning rings, the two wire passing holes are respectively communicated with the head end and the tail end of the screw positioning groove, the annular pressing seat is sleeved on the periphery of the valve cover, connecting flanges are connected to the threads on the valve cover, a plurality of screw holes corresponding to the compression screws in number are formed in the upper end of the connecting flanges in the circumferential direction, the screw holes are provided with containing grooves for embedding screw heads of the compression screws, the lower ends of the compression screws are abutted against the annular pressing seat to compress the annular pressing seat on the upper parts of the two positioning rings, the lower edges of the annular pressing seat are provided with annular positioning flanges, and the annular positioning flanges are abutted to the periphery of the two positioning rings.
Through adopting above-mentioned technical scheme, can realize the location installation of heater, promote the stability of heater installation, simultaneously, the spiral mounting structure of heater can guarantee that valve gap position is heated by even, further promotes anti-freezing stifled effect.
The invention is further arranged that a locking joint for fixing the heating wire is arranged at the position, corresponding to the outer end of the wire passing hole, of the positioning ring, a thread groove is arranged at the outer end of the wire passing hole, an external thread sleeve through which the heating wire passes is connected to the thread groove in a threaded manner, a buffer pad is clamped between the inner end of the external thread sleeve and the inner end of the thread groove, the locking joint comprises a joint main body, the joint main body is connected to the external thread sleeve in a threaded manner, a plurality of locking claws are arranged at the outer end of the joint main body in the circumferential direction, arc-shaped protruding parts for abutting against the heating wire are arranged at the positions, close to the outer end, of the inner sides of the locking claws, a guide protruding part with an isosceles trapezoid-shaped cross section is arranged at the positions, close to the outer sides of the locking claws, an adjusting nut is connected to the outer circumference of the adjusting nut, and one end, close to the guide protruding parts, of the adjusting nut is provided with a conical guide inclined plane.
Through adopting above-mentioned technical scheme, after screwing the adjusting nut, a plurality of locking claws on the locking joint can produce the deformation towards the heater orientation for arc convex part on the locking claw supports tightly the heater, thereby realizes the locking to the heater at two wire hole positions, avoids it to receive the pull to influence the stability of heater installation on the spiral constant head tank, promotes the security of structure.
The positioning ring comprises an annular main body and a gland, wherein the annular main body is provided with an annular heat insulation cavity with an opening at one end, the gland is arranged at one end of the annular main body corresponding to the opening, one end surface of the annular main body, facing the gland, is provided with a clamping groove, and the gland is provided with a clamping convex part matched with the clamping groove; the inside in annular thermal-insulated chamber is equipped with first annular baffle and second annular baffle, and first annular baffle and second annular baffle separate into annular thermal-insulated chamber first heat preservation room, heat-insulating chamber and second heat preservation room with annular thermal-insulated chamber, and first heat preservation room and second heat preservation room are filled with rock wool.
Through adopting above-mentioned technical scheme, can play thermal-insulated effect, not only can avoid the staff to touch by mistake and scald, can promote heat utilization moreover and put forward high pressure heater work rate, reduce the energy consumption.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is an enlarged schematic view of the portion A in FIG. 1;
FIG. 3 is an enlarged schematic view of the portion B in FIG. 1;
FIG. 4 is a schematic view of the seal assembly of the present invention;
FIG. 5 is a schematic view of a heating assembly according to the present invention;
FIG. 6 is a schematic view of a two-position ring assembly of the present invention;
fig. 7 is a schematic structural view of the locking joint of the present invention.
In the figure: 1. a valve body; 2. a valve stem; 3. a valve cover; 4. a flashboard; 5. a first flow passage; 6. a second flow passage; 7. a flow-through cavity; 8. a valve neck; 9. a valve seat; 10. a cavity; 11. a first ramp; 12. a second ramp; 13. a return passage; 14. a metal elliptical pad; 15. a first V-shaped seal groove; 16. a second V-shaped seal groove; 17. a bracket; 18. an electric device; 19. a seal assembly; 20. a filler pad; 21. a first sealing filler; 22. a filler spacer ring; 23. a second sealing filler; 24. packing pressing sleeve; 25. a packing pressing plate; 26. sealing the cavity; 27. a slipknot bolt; 28. an upper seal seat; 29. a limit step; 30. a limit flange; 31. an observation port; 32. a dust-proof glass window; 33. a heating assembly; 34. a preheating chamber; 35. an annular pressing seat; 36. a positioning ring; 37. a compression screw; 38. an annular mounting groove; 39. a spiral positioning groove; 40. a wire passing hole; 41. a connecting flange; 42. a screw hole; 43. a storage groove; 44. an annular locating flange; 45. locking the joint; 46. a thread groove; 47. an externally threaded sleeve; 48. a cushion pad; 49. a joint body; 50. a locking claw; 51. an arc-shaped convex part; 52. a guide protrusion; 53. an adjusting nut; 54. a conical guide inclined surface; 55. an annular body; 56. a gland; 57. an annular heat insulating cavity; 58. a clamping groove; 59. a clamping convex part; 60. a first annular separator; 61. a second annular separator; 62. a first heat-preserving chamber; 63. a thermally insulated chamber; 64. a second heat preservation chamber; 65. rock wool; 66. a heating wire.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Examples: the inclined flow channel anti-freezing and anti-blocking molten salt gate valve shown in the attached drawings 1-7 comprises a valve body 1, a valve rod 2, a valve cover 3 and a gate plate 4, wherein a first flow channel 5 and a second flow channel 6 which extend inwards are respectively arranged at two ends of the valve body 1, an overflow cavity 7 is arranged between the first flow channel 5 and the second flow channel 6, the valve cover 3 is arranged at the upper end of a valve neck 8 of the valve body 1, the valve rod 2 penetrates through the valve cover 3 and stretches into the overflow cavity 7 to be connected with the gate plate 4 in a linkage manner, a valve seat 9 used for forming sealing fit with the gate plate 4 is respectively arranged at two sides of the gate plate 4 in the overflow cavity 7, and a concave cavity 10 communicated with the overflow cavity 7 is arranged at the position of the inner wall of the valve body 1 below the gate plate 4; the bottom of the first runner 5 is provided with a first slope 11, the height of the first slope 11 gradually decreases in the direction away from the overflow cavity 7, the bottom of the second runner 6 is provided with a second slope 12, the height of the second slope 12 gradually decreases in the direction away from the overflow cavity 7, and a backflow channel 13 for communicating the concave cavity 10 with the first runner 5 is formed in the first slope 11. When the valve is closed, molten salt in the concave cavity 10 can flow into the first flow channel 5 through the backflow channel 13, the phenomenon of salt accumulation liquid in the concave cavity 10 is avoided, the valve is frozen and blocked, the first flow channel 5 and the second flow channel 6 are provided with the first slope 11 and the second slope 12, the flow guiding effect can be achieved, molten salt is prevented from being accumulated on two sides of the flashboard 4, the anti-freezing and blocking effect of the valve is further improved, the flashboard 4 and the valve seat 9 are guaranteed to be effectively matched and sealed, and the condition of internal leakage of the valve is avoided.
As shown in fig. 2, the valve cover 3 is connected with the valve neck 8 through bolts, a first V-shaped sealing groove 15 in a closed loop is arranged on the lower end surface of the valve cover 3, a second V-shaped sealing groove 16 in a closed loop is arranged on the upper end surface of the valve neck 8, the upper portion of the metal elliptical pad 14 is embedded in the first V-shaped sealing groove 15, and the lower portion of the metal elliptical pad 14 is embedded in the second V-shaped sealing groove 16. The design can promote the tightness between the valve cover 3 and the valve neck 8, and avoid the leakage of medium in the valve from a gap between the valve cover and the valve neck 8.
As shown in fig. 1, a hollow bracket 17 is mounted at the upper end of the valve cover 3 through a bolt, an electric device 18 is mounted at the upper end of the bracket 17, the electric device 18 is a conventional device on the market, the electric device is driven by a motor as a source power, and the output end of the electric device 18 is connected with the upper end of the valve rod 2 in a linkage way. The valve is opened and closed by operating the valve rod 2 through the electric device 18, so that the operation is very easy and convenient.
As shown in fig. 1 and fig. 4, the sealing assembly 19 further comprises a sealing assembly 19, the sealing assembly 19 comprises a packing pad 20, a first sealing packing 21, a packing spacer 22, a second sealing packing 23, a packing pressing sleeve 24 and a packing pressing plate 25, the first sealing packing 21 and the second sealing packing 23 are all flexible graphite, a sealing cavity 26 coaxial with the valve rod 2 is arranged in the middle of the valve cover 3, the second sealing packing 23, the packing spacer 22, the first sealing packing 21 and the packing pad 20 are sequentially arranged in the sealing cavity 26 from top to bottom, and the packing pressing plate 25 is connected with the support 17 through a loose-joint bolt 27 and presses the packing pressing sleeve 24 on the upper end of the second sealing packing 23. This design can promote the tightness between the valve stem 2 and the valve cover 3, thereby avoiding leakage of the internal medium from the gap between the two.
As shown in fig. 4, the sealing assembly 19 further includes a tubular upper sealing seat 28, a limiting step 29 is disposed in the valve cover 3, the upper sealing seat 28 is sleeved between the valve rod 2 and the limiting step 29, the upper sealing seat 28 is in interference fit with the limiting step 29, a peripherally extending limiting flange 30 is further disposed at the lower end of the upper sealing seat 28, and the limiting flange 30 abuts against the lower end surface of the limiting step 29. The upper sealing seat 28 not only can play a guiding role, but also can further improve the tightness between the valve rod 2 and the valve cover 3, thereby effectively avoiding leakage of internal media from a gap between the valve rod 2 and the valve cover 3.
As shown in fig. 4, a viewing port 31 is provided on the side of the bracket 17, and a dust-proof glass window 32 is mounted on the viewing port 31. This design prevents dust from entering the seal assembly 19 and affecting the sealing effect of the seal assembly 19.
As shown in fig. 5, the gate valve further includes a heating component 33, a preheating cavity 34 is disposed at a position between the upper sealing seat 28 and the sealing cavity 26 on the inner side of the valve cover 3, the heating component 33 is disposed at a position on the outer periphery of the sealing cavity 26 on the valve cover 3, the heating component 33 includes a heating wire 66, the heating wire 66 is a conventional electric resistance wire for generating heat by energizing in the market, and the heating wire 66 is wound around the outer periphery of the valve cover 3. The heating wire 66 is utilized to supplement heat for the valve cover 3, so that the crystallization of molten salt in the valve cover 3 caused by low temperature is avoided, and the anti-freezing and anti-blocking effects are achieved.
As shown in fig. 5 and fig. 6, the heating assembly 33 further includes an annular pressing seat 35, two positioning rings 36 and a plurality of compression screws 37, the outer circumference of the valve cover 3 is provided with an annular mounting groove 38, the annular mounting groove 38 is provided with a spiral positioning groove 39 for embedding the heating wire 66, the two positioning rings 36 are sleeved on the annular mounting groove 38 to form a cylindrical structure, the two positioning rings 36 press the heating wire 66 in the spiral positioning groove 39, the two positioning rings 36 are respectively provided with a wire passing hole 40 for the heating wire 66 to pass through, the two wire passing holes 40 are respectively communicated with the head end and the tail end of the spiral positioning groove 39, the annular pressing seat 35 is sleeved on the outer circumference of the valve cover 3, the valve cover 3 is connected with a connecting flange 41 in a threaded manner, namely, the inner wall of the connecting flange 41 is provided with an inner threaded portion matched with the outer threaded portion, the inner diameter of the connecting flange 41 is the same as that of the annular pressing seat 35, the upper end of the connecting flange 41 is provided with a plurality of screw holes 37 along the circumference, the two screw holes are correspondingly pressed by the annular pressing screws 37 in the annular pressing seat 35, the two screw heads are correspondingly pressed by the annular pressing seat 37, and the two screw heads are correspondingly pressed by the annular screws 37, and the two screw heads are pressed by the annular pressing seat 37, and the corresponding to the two screw heads are pressed by the corresponding screw holes of the screw heads, and the screw heads are pressed by the screw heads, and the screw heads are pressed by the screw screws, and the screw heads are pressed by the screw, and the screw screws, and the screw screws are respectively. The positioning installation of the heating wire 66 can be realized in this design, promotes the stability of heating wire 66 installation, simultaneously, the spiral mounting structure of heating wire 66 can guarantee that valve gap 3 positions are evenly heated, further promotes anti-freezing stifled effect.
As shown in fig. 5 and fig. 7, a locking joint 45 for fixing the heating wire 66 is installed at a position of the positioning ring 36 corresponding to the outer end of the wire passing hole 40, a thread groove 46 is provided at the outer end of the wire passing hole 40, an external thread sleeve 47 through which the heating wire 66 passes is connected with the thread groove 46 in a threaded manner, a buffer pad 48 is interposed between the inner end of the external thread sleeve 47 and the inner end of the thread groove 46, the locking joint 45 comprises a joint body 49, the joint body 49 is connected with the external thread sleeve 47 in a threaded manner, a plurality of locking claws 50 are provided at the outer end of the joint body 49 along the circumferential direction, an arc-shaped protruding part 51 for abutting against the heating wire 66 is provided at a position of the inner side of the locking claw 50 close to the outer end, a guiding protruding part 52 with an isosceles trapezoid cross section is provided at the outer side of the locking claw 50, an adjusting nut 53 is connected with the outer circumference of the plurality of locking claws 50, and one end of the adjusting nut 53 close to the guiding protruding part 52 is provided with a conical guiding inclined surface 54. After the adjusting nut 53 is screwed, the plurality of locking claws 50 on the locking joint 45 deform towards the direction of the heating wire 66, so that the arc-shaped convex parts 51 on the locking claws 50 resist against the heating wire 66, thereby realizing the locking of the heating wires 66 on the two wire passing holes 40, avoiding the influence of the drawing on the installation stability of the heating wires 66 on the spiral positioning groove 39, and improving the safety of the structure.
As shown in fig. 5, the positioning ring 36 includes an annular main body 55 and a pressing cover 56, an annular heat insulation cavity 57 with an opening at one end is provided on the annular main body 55, one end of the positioning ring 36 with the opening is provided upwards, the other end of the positioning ring 36 with the opening is provided downwards, the pressing cover 56 is provided on the annular main body 55 at the end corresponding to the opening, a clamping groove 58 is provided on an end surface of the annular main body 55 facing the pressing cover 56, and a clamping protrusion 59 matching with the clamping groove 58 is provided on the pressing cover 56; the first annular partition plate 60 and the second annular partition plate 61 are arranged in the annular heat insulation cavity 57, the annular heat insulation cavity 57 is divided into a first heat insulation chamber 62, a heat insulation chamber 63 and a second heat insulation chamber 64 by the first annular partition plate 60 and the second annular partition plate 61, and rock wool 65 is filled in the first heat insulation chamber 62 and the second heat insulation chamber 64. The design can play a role in heat insulation, not only can avoid scalding caused by misoperation of workers, but also can improve the heat utilization rate and reduce the energy consumption.
Claims (7)
1. The utility model provides an anti-freezing and anti-blocking molten salt gate valve of inclined flow channel, includes valve body (1), valve rod (2), valve gap (3) and flashboard (4), the both ends of valve body (1) are equipped with first flow channel (5) and second flow channel (6) that inwards extend respectively, are equipped with between first flow channel (5) and second flow channel (6) and overflow chamber (7), valve gap (3) are installed in valve neck (8) upper end of valve body (1), and valve rod (2) run through valve gap (3) and stretch into overflow chamber (7) and are connected with flashboard (4) linkage, the position of overflow chamber (7) meso position flashboard (4) both sides is equipped with a disk seat (9) that is used for constituteing sealing fit with flashboard (4) respectively, the position that valve body (1) inner wall is located flashboard (4) below is equipped with cavity (10) that are linked together with overflow chamber (7); the method is characterized in that: the bottom of the first runner (5) is provided with a first slope (11), the height of the first slope (11) gradually decreases in the direction away from the overflow cavity (7), the bottom of the second runner (6) is provided with a second slope (12), the height of the second slope (12) gradually decreases in the direction away from the overflow cavity (7), and a backflow channel (13) for communicating the concave cavity (10) with the first runner (5) is formed in the first slope (11);
the inclined flow passage anti-freezing and anti-blocking molten salt gate valve further comprises a heating component (33), a preheating cavity (34) is arranged at the inner side of the valve cover (3) and positioned between the upper sealing seat (28) and the sealing cavity (26), the heating component (33) is arranged on the valve cover (3) and positioned at the periphery of the sealing cavity (26), the heating component (33) comprises a heating wire (66), and the heating wire (66) is wound on the periphery of the valve cover (3);
the heating component (33) further comprises an annular pressing seat (35), two positioning rings (36) and a plurality of compression screws (37), an annular mounting groove (38) is formed in the periphery of the valve cover (3), a spiral positioning groove (39) used for embedding a heating wire (66) is formed in the annular mounting groove (38), two positioning rings (36) are sleeved on the annular mounting groove (38) to form a cylindrical structure, the heating wire (66) is pressed and fixed in the spiral positioning groove (39) by the two positioning rings (36), a wire passing hole (40) used for the heating wire (66) to pass through is formed in the two positioning rings (36), the two wire passing holes (40) are respectively communicated with the head end and the tail end of the spiral positioning groove (39), the annular pressing seat (35) is sleeved on the periphery of the valve cover (3), a connecting flange (41) is connected with threads, a plurality of screw holes (37) are formed in the upper end of the connecting flange (41) along the circumferential direction, the screw holes (37) are corresponding to the compression screws (42) are embedded in the screw holes (42) of the screw cover (37), the lower end of the compression screw (37) is abutted against the annular compression seat (35) to compress the annular compression seat (35) on the upper parts of the two positioning rings (36), an annular positioning flange (44) is arranged at the edge of the lower end of the annular compression seat (35), and the annular positioning flange (44) is abutted against the peripheries of the two positioning rings (36);
the utility model provides a locking joint (45) that is used for fixed heater (66) are installed to the position of holding ring (36) corresponding to wire passing hole (40) outer end, the outer end of wire passing hole (40) is equipped with screw thread groove (46), screw thread connection has external screw thread sleeve (47) that supplies heater (66) to pass on screw thread groove (46) to press from both sides between the inner of external screw thread sleeve (47) and screw thread groove (46) inner and be equipped with blotter (48), locking joint (45) including connect main part (49), connect main part (49) threaded connection on external screw thread sleeve (47), the outer end of connecting main part (49) is provided with a plurality of locking claws (50) along circumference, the position that the locking claw (50) inboard is close to the outer end is equipped with arc convex part (51) that are used for supporting tightly heater (66), the position that the locking claw (50) outside is close to the outer end is equipped with guide convex part (52) that the cross-section is isosceles trapezoid shape to the outer circumference screw thread connection has adjusting nut (53), be close to guide convex part (52) on adjusting nut (53) are equipped with conical guide slope (54).
2. The diagonal flow antifreeze plugging molten salt gate valve of claim 1, wherein: still include metal oval pad (14), be connected through the bolt between valve gap (3) and valve neck (8), the lower terminal surface of valve gap (3) is equipped with first V-arrangement seal groove (15) that are the closed loop, the up end of valve neck (8) is equipped with second V-arrangement seal groove (16) that are the closed loop, the upper portion of metal oval pad (14) inlays and establishes in first V-arrangement seal groove (15), the lower part of metal oval pad (14) inlays and establishes in second V-arrangement seal groove (16).
3. The diagonal flow antifreeze plugging molten salt gate valve of claim 1, wherein: the upper end of the valve cover (3) is provided with a hollow bracket (17) through a bolt, the upper end of the bracket (17) is provided with an electric device (18), and the output end of the electric device (18) is connected with the upper end of the valve rod (2) in a linkage way.
4. The diagonal flow antifreeze plugging molten salt gate valve of claim 3, wherein: still include seal assembly (19), seal assembly (19) include packing pad (20), first sealing filler (21), packing spacer ring (22), second sealing filler (23), packing press cover (24) and packing clamp plate (25), valve gap (3) middle part is provided with sealed chamber (26) of coaxial with valve rod (2), second sealing filler (23), packing spacer ring (22), first sealing filler (21) and packing pad (20) are from top to bottom set gradually in sealed chamber (26), packing clamp plate (25) are connected with support (17) through loose-leaf bolt (27) and will packing press cover (24) are pressed in the upper end of second sealing filler (23).
5. The diagonal flow antifreeze plugging molten salt gate valve of claim 4, wherein: seal assembly (19) are still including being tubular last seal seat (28), be equipped with spacing step (29) in valve gap (3), go up seal seat (28) cover establish valve rod (2) with between spacing step (29), and go up seal seat (28) and spacing step (29) interference fit, the lower extreme of going up seal seat (28) still is equipped with limit flange (30) that the periphery extends, limit flange (30) support on the lower terminal surface of spacing step (29).
6. The diagonal flow antifreeze plugging molten salt gate valve of claim 3, wherein: an observation opening (31) is formed in the side portion of the support (17), and a dustproof glass window (32) is arranged on the observation opening (31).
7. The diagonal flow antifreeze plugging molten salt gate valve of claim 1, wherein: the positioning ring (36) comprises an annular main body (55) and a gland (56), an annular heat insulation cavity (57) with one end open is arranged on the annular main body (55), the gland (56) is arranged at one end of the annular main body (55) corresponding to the opening, a clamping groove (58) is formed in one end face, facing the gland (56), of the annular main body (55), and a clamping convex part (59) matched with the clamping groove (58) is formed in the gland (56); the inside of annular thermal-insulated chamber (57) is equipped with first annular baffle (60) and second annular baffle (61), and first annular baffle (60) and second annular baffle (61) separate annular thermal-insulated chamber (57) into first heat preservation room (62), heat-insulating chamber (63) and second heat preservation room (64), and first heat preservation room (62) and second heat preservation room (64) are filled with rock wool (65).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210280137.1A CN114645953B (en) | 2022-03-21 | 2022-03-21 | Oblique runner anti-freezing and blocking fused salt gate valve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210280137.1A CN114645953B (en) | 2022-03-21 | 2022-03-21 | Oblique runner anti-freezing and blocking fused salt gate valve |
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| CN114645953A CN114645953A (en) | 2022-06-21 |
| CN114645953B true CN114645953B (en) | 2024-04-09 |
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