CN114233868A - Y-shaped jacket molten salt regulating valve - Google Patents
Y-shaped jacket molten salt regulating valve Download PDFInfo
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- CN114233868A CN114233868A CN202111622614.XA CN202111622614A CN114233868A CN 114233868 A CN114233868 A CN 114233868A CN 202111622614 A CN202111622614 A CN 202111622614A CN 114233868 A CN114233868 A CN 114233868A
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- 150000003839 salts Chemical class 0.000 title claims abstract description 43
- 230000001105 regulatory effect Effects 0.000 title claims abstract description 20
- 238000012856 packing Methods 0.000 claims abstract description 54
- 229910052751 metal Inorganic materials 0.000 claims abstract description 36
- 239000002184 metal Substances 0.000 claims abstract description 36
- 238000009413 insulation Methods 0.000 claims abstract description 16
- 238000003466 welding Methods 0.000 claims abstract description 15
- 238000005476 soldering Methods 0.000 claims description 18
- 238000007789 sealing Methods 0.000 claims description 14
- 210000004907 gland Anatomy 0.000 claims description 5
- 238000004321 preservation Methods 0.000 claims description 5
- 125000006850 spacer group Chemical group 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 2
- 238000002425 crystallisation Methods 0.000 abstract description 13
- 230000008025 crystallization Effects 0.000 abstract description 13
- 238000009434 installation Methods 0.000 abstract description 2
- 230000001988 toxicity Effects 0.000 abstract description 2
- 231100000419 toxicity Toxicity 0.000 abstract description 2
- 238000013461 design Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000000945 filler Substances 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910002651 NO3 Inorganic materials 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- VNTLIPZTSJSULJ-UHFFFAOYSA-N chromium molybdenum Chemical compound [Cr].[Mo] VNTLIPZTSJSULJ-UHFFFAOYSA-N 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005338 heat storage Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift 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
- F16K1/02—Lift 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 with screw-spindle
- F16K1/04—Lift 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 with screw-spindle with a cut-off member rigid with the spindle, e.g. main valves
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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
- F16K1/00—Lift 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
- F16K1/32—Details
-
- 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
- F16K1/00—Lift 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
- F16K1/32—Details
- F16K1/48—Attaching valve members to screw-spindles
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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
- F16K27/02—Construction of housing; Use of materials therefor of lift 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
- F16K41/00—Spindle sealings
- F16K41/10—Spindle sealings with diaphragm, e.g. shaped as bellows or tube
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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
- F16N—LUBRICATING
- F16N1/00—Constructional modifications of parts of machines or apparatus for the purpose of lubrication
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Valve Housings (AREA)
Abstract
The invention relates to a Y-shaped jacket molten salt regulating valve which comprises a valve body; the valve cavity of the valve body is arranged as a Y-shaped flow passage, and the outer layer of the valve body is wrapped by a first metal heat-insulation jacket; the corrugated pipe sleeve assembly is arranged at the upper part of the valve body, a lip welding piece assembly is arranged between the valve body and the corrugated pipe sleeve assembly, the valve rod penetrates through an inner cavity of the corrugated pipe, so that the valve rod and the corrugated pipe are welded into an assembly which is arranged in the corrugated pipe sleeve assembly, and the upper part of the valve rod penetrates through a packing assembly arranged in the upper cover; and a second metal heat-insulating jacket is wrapped outside the corrugated pipe sleeve body of the corrugated pipe sleeve assembly and is mutually connected with the first metal heat-insulating jacket of the valve body through a jacket short joint. The invention can ensure strong fluidity of the inner cavity and no dead angle, and avoid crystallization blockage caused by incomplete medium discharge; the crystallization phenomenon of the molten salt can be avoided; the guide performance can be enhanced, the structure is prevented from being deposited, and the installation of vertical and horizontal pipelines is ensured; can meet the special working conditions of corrosivity, toxicity and easy crystallization of the molten salt.
Description
Technical Field
The invention belongs to the technical field of valves, and particularly relates to a Y-shaped jacket molten salt regulating valve.
Background
A heat transfer and storage medium-fused salt with high heat capacity improves the heat storage rate by 2.5 times compared with the traditional method, and simultaneously has lower unit price and less influence on the environment; therefore, the molten salt is the preferred energy storage medium in solar photo-thermal power generation. However, the use temperature of the molten salt is 420-450 ℃, the molten salt has strong water absorption, and nitrate mixture can release water vapor, generate corrosivity under the action of the water vapor and has toxicity; and the graphite is easy to crystallize, contains impurities and is easy to react with graphite. The physical and chemical characteristics of the molten salt enable the molten salt to have the characteristics of high temperature, high oxidizability, easy crystallization, high melting point, corrosivity and the like, and under the harsh working conditions, an adjusting valve capable of controlling the flow and pressure of the high-temperature molten salt is required.
Chinese patent application publication No. CN111396580A, published as 10.07.2020, entitled "double-guide high-temperature molten salt regulating valve", discloses a double-guide high-temperature molten salt regulating valve, which comprises a valve body, a support, an upper valve cover, a valve rod and a valve plug, wherein the valve body, the support and the upper valve cover are sequentially connected, one end of the valve rod sequentially penetrates through the upper valve cover, the support and the valve body and is fixed with the valve plug, the double-guide high-temperature molten salt regulating valve also comprises a valve sleeve and an upper guide sleeve, the valve sleeve is arranged in the valve body and is fixed with the valve body, and the valve plug is arranged in the valve sleeve and is in sliding connection with the valve sleeve; the upper guide sleeve is arranged in the support, an upper guide hole matched with the valve rod is formed in the upper guide sleeve, and the valve rod penetrates through the upper guide hole and is in sliding connection with the upper guide sleeve. Although the valve rod guiding problem under the common working condition is solved, the valve rod guiding problem is still far from being enough to the harsh working condition of the high-temperature molten salt valve. Firstly, the valve body of the patent takes a jacket-free form, which leads to the crystallization of the molten salt below 200 ℃; meanwhile, the valve body flow channel adopts a traditional structure, the inner cavity has poor flowability and dead angles, and the medium is not discharged thoroughly and is blocked by crystallization. Secondly, the pressure-bearing stud nut of the upper cover of the valve body is made of chromium-molybdenum steel, and although the material strength is good, the sealing performance of the gasket cannot be completely prevented from being influenced by alternating working conditions. Finally, the patent adopts the structure of the traditional packing sealing valve rod, and the problem of leakage of the packing at the valve rod can not be completely solved.
Disclosure of Invention
Aiming at the problems, the invention provides the Y-shaped jacket molten salt regulating valve which can ensure strong flowability of an inner cavity, has no dead angle and avoids crystallization blockage caused by incomplete discharge of a medium; the crystallization phenomenon of the molten salt can be avoided; can strengthen the guidance quality, prevent deposiing the structure, guarantee vertical and horizontal pipeline's installation simultaneously.
According to the technical scheme provided by the invention: a Y-shaped jacket molten salt regulating valve comprises a valve body, a valve seat valve core, a valve rod and an upper cover, wherein the valve seat is arranged on a valve body positioning surface; the bottom of the valve core penetrates through the valve seat guide hole through the guide rod and is arranged in the valve body flow passage, and the upper part of the valve core is connected with the valve rod; a packing assembly, a packing gland and a packing pressure plate are sequentially arranged in the upper cover packing box hole, and the packing pressure plate and the upper cover are fastened by bolts; is characterized in that: the valve cavity of the valve body is arranged as a Y-shaped flow passage, the outer layer of the valve body is wrapped by a first metal heat-insulation jacket, and a first support ring is uniformly arranged between the valve body and the first metal heat-insulation jacket; the corrugated pipe sleeve assembly is arranged at the upper part of the valve body, a lip welding piece assembly is arranged between the valve body and the corrugated pipe sleeve assembly, the valve rod penetrates through an inner cavity of the corrugated pipe, so that the valve rod and the corrugated pipe are welded into an assembly which is arranged in the corrugated pipe sleeve assembly, and the upper part of the valve rod penetrates through a packing assembly arranged in the upper cover; the corrugated pipe sleeve body of the corrugated pipe sleeve assembly is wrapped by a second metal heat-insulation jacket, the second metal heat-insulation jacket is mutually connected with the first metal heat-insulation jacket of the valve body through a jacket short joint, and the upper part of the corrugated pipe sleeve is provided with an upper cover and is fastened through a fastening assembly.
As a further improvement of the invention, the bottom of the valve seat is provided with a guide hole, and a thread is arranged in the guide hole; the valve rod is provided with threads, and the end part of the valve rod is provided with a step.
As a further improvement of the invention, one side of the valve body is provided with an inlet flow passage, the other side of the valve body is provided with an outlet flow passage, the inlet flow passage and the outlet flow passage are on the same axial line, the axial line of the valve cavity and the axial line of the flow passage form an included angle of not 90 degrees, and the valve cavity is arranged in a Y shape.
As a further improvement of the invention, the lip soldering lug assembly comprises a first lip soldering lug, a second lip soldering lug and a gasket, and the first lip soldering lug, the second lip soldering lug and the gasket are combined into a whole.
As a further improvement of the present invention, the bellows sleeve assembly comprises a second lip soldering lug, a second metal heat-insulating jacket, a bellows sleeve body and a second support ring, the bellows is installed in the bellows sleeve body, the second lip soldering lug is used in cooperation with the first lip soldering lug, the second metal heat-insulating jacket is wrapped outside the bellows sleeve body, and the second support ring is arranged between the second metal heat-insulating jacket and the bellows sleeve body.
As a further improvement of the invention, a flat hole is arranged in the inner cavity of the corrugated pipe and is used for fixing the outer flat of the valve rod and preventing the valve rod from rotating.
As a further improvement of the invention, the packing assembly comprises an upper section packing part, a lower section packing part and a packing spacer, wherein the packing spacer is arranged between the upper section packing part and the lower section packing part.
As a further improvement of the invention, an oil filling hole is arranged in the upper cover, and a metal sealing gasket is arranged in the upper cover.
As a further improvement of the invention, the fastener assembly comprises a stud, a nut and a self-locking gasket, the self-locking gasket is arranged between the corrugated pipe sleeve assembly and the upper cover, and the corrugated pipe sleeve assembly and the upper cover are fastened by the stud and the nut.
The positive progress effects of the invention are as follows:
1) the Y-shaped valve body structure adopted by the invention can ensure that the medium has strong fluidity in the inner cavity of the valve body and no dead angle, and avoids crystallization blockage caused by incomplete medium discharge; meanwhile, the full jacket structure ensures that the temperature of the molten salt is kept above 200 ℃, and the crystallization phenomenon of the molten salt caused by over-low temperature is avoided; and the existence of the support ring not only effectively strengthens the strength of the metal jacket layer, but also can optimize the size of the volume of the heat-insulating layer and strengthen the heat-insulating effect.
2) The double-seal design of the lip welding sheet and the gasket completely avoids the risk of leakage of the molten salt caused by high-temperature creep of the stud due to the high temperature of the molten salt and corrosion of the molten salt to the gasket.
3) The packing adopts a corrugated pipe and packing double-sealing design, and the problem of leakage of the packing at the valve rod is completely solved.
4) The invention adopts a structure of bottom valve seat guide and upper filler guide, and the structure of upper and lower double guide can solve the problem of valve core vibration caused by harsh working conditions and prolong the service life of the valve internals.
5) The valve rod and the valve rod are connected by adopting a thread and end step structure, so that most of strong thrust from an actuating mechanism can be decomposed on a step section, and a small part of the strong thrust acts on the thread of the valve rod; the combination of the outer flat of the valve rod and the flat hole in the inner cavity of the corrugated pipe can prevent the valve rod from rotating, and the combination of the three structures further prolongs the service life of the valve inner part.
6) The filler is easy to generate the phenomenon of dryness due to the higher temperature of the molten salt medium, so that the friction force of a valve rod is increased, the adjusting performance is abnormal, and the service life of the filler is influenced.
Drawings
Fig. 1 is a front view of the structure of the present invention.
Fig. 2 is a view in the direction a of fig. 1.
Fig. 3 is a structural sectional view of the valve body of the present invention.
Fig. 4 is a structural sectional view of a bellows sleeve according to the present invention.
FIG. 5 is an enlarged view I of the upper cover oil hole of FIG. 1.
Fig. 6 is an enlarged view II of the fastening assembly of fig. 1.
Description of reference numerals: 1-valve body, 1-2 outlet flow channel, 1-3 first supporting ring, 1-4 first lip welding piece, 1-5 first metal heat preservation jacket, 1-6 inlet flow channel, 1-7 valve cavity, 2-valve seat, 3-valve core, 4-valve rod, 5-corrugated pipe, 6-corrugated pipe sleeve component, 6-1 second lip welding piece, 6-2 second metal heat preservation jacket, 6-3 corrugated pipe sleeve body, 6-4 second supporting ring, 7-gasket, 8-upper cover, 9-metal sealing gasket, 10-pipe thread outer hexagon bolt, 11-packing component, 12-packing gland, 13-packing pressing plate, 14-fastening component and 15-short joint jacket.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in figures 1-6, a Y-shaped jacket molten salt regulating valve comprises a valve body 1, a valve seat 2, a valve core 3, a valve rod 4, a corrugated pipe 5, a corrugated pipe sleeve assembly 6, an upper cover 8, a packing assembly 11, a packing gland 12, a packing pressure plate 13 and a fastening assembly 14,
the valve body 1 is a casting which is in a Y-shaped flow channel shape, a layer of first metal heat-insulation jacket 1-5 is wrapped on the outer layer, and first support rings 1-3 are uniformly arranged between the valve body 1 and the first metal heat-insulation jacket 1-5. The threaded valve seat 2 with a guide hole at the bottom of the valve body 1 is arranged on the valve body positioning surface; the bottom of the valve core 3 passes through a valve seat guide hole through a guide rod and is arranged in a valve body flow passage, and the upper part of the valve core 3 is connected with the valve rod 4 in a threaded connection mode; the valve rod 4 penetrates through the inner cavity of the corrugated pipe 5, the valve rod 4 and the corrugated pipe 5 are welded into a component by a welding mode and are arranged in the corrugated pipe sleeve component 6, the corrugated pipe sleeve component 6 is arranged at the upper part of the valve body 1, and the upper part of the valve rod 4 penetrates through a packing component 11 arranged in the upper cover 8; the corrugated pipe sleeve of the corrugated pipe sleeve assembly 6 is externally wrapped with a layer of second metal heat-insulating jacket 6-2, the second metal heat-insulating jacket 6-2 is mutually connected with a first metal heat-insulating jacket 1-5 of the valve body through a jacket short connector 15, an upper cover 8 is arranged on the upper portion of the corrugated pipe sleeve assembly 6, a gasket 7 is arranged between the corrugated pipe sleeve assembly 6 and the upper cover 8 and is compressed through pretightening force provided by a fastening assembly 14 to achieve sealing, a packing assembly 11, a packing gland 12 and a packing pressing plate 13 are sequentially arranged in a packing box hole of the upper cover 8, and the packing pressing plate 13 and the upper cover 8 are fastened through bolts.
Preferably, as shown in fig. 3, the valve body 1 comprises an outlet flow passage 1-2, a first support ring 1-3, a first lip welding piece 1-4, a first metal heat-insulating jacket 1-5, an inlet flow passage 1-6 and a valve cavity 1-7; a lip soldering lug assembly is arranged between the valve body 1 and the corrugated pipe sleeve 6 and comprises a first lip soldering lug 1-4, a second lip soldering lug 6-1 and a gasket, and the first lip soldering lug 1-4, the second lip soldering lug 6-1 and the gasket are assembled together. One side of the valve body 1 is provided with an inlet flow passage 1-6, the other side of the valve body is provided with an outlet flow passage 1-2, the inlet flow passage 1-6 and the outlet flow passage 1-2 are on the same axial line, the axial line of the valve cavity 1-7 and the axial line of the flow passage form an included angle of not 90 degrees, and the valve cavity of the valve body structure is arranged in a Y shape.
The valve seat 2 is arranged on the inlet flow passage of the valve cavity 1-7, and the guide rod at the lower part of the valve core 3 passes through the guide hole of the valve seat 2. The bellows sleeve assembly 6 of the valve body 1 is in a full jacket form. The upper portion of the valve body 1 and the lower portion of the corrugated pipe sleeve assembly 6 are provided with lip welding piece assemblies in a welding mode, and the valve body 1 and the corrugated pipe sleeve assembly 6 are sealed and welded through the lip welding piece assemblies and are provided with a gasket double-sealing design.
Preferably, as shown in fig. 4, the bellows sleeve assembly 6 is composed of a second lip welding piece 6-1, a second metal thermal insulation jacket 6-2, a bellows sleeve body 6-3 and a second support ring 6-4, the bellows 5 is installed in the bellows body 6-3, the second lip welding piece 6-1 is used in cooperation with the first lip welding piece 1-4, the second metal thermal insulation jacket 6-2 is wrapped outside the bellows sleeve body 6-3, and the second support ring 6-4 is arranged between the second metal thermal insulation jacket 6-2 and the bellows sleeve body 6-3.
Preferably, a flat hole is arranged in the inner cavity of the corrugated pipe 5, and the flat hole is used for fixing the outer flat of the valve rod 4 and preventing the valve rod 4 from rotating.
Preferably, the packing assembly 11 includes an upper packing portion, a lower packing portion, and a packing spacer disposed between the upper packing portion and the lower packing portion.
Preferably, the valve rod 4 is provided with threads, and the end of the valve rod 4 is provided with a step structure. The upper part of the valve core 3 is connected with the valve rod 4 in a threaded connection mode; the valve core 3 and the valve rod 4 adopt a structure of bottom valve seat guide and upper filling guide.
Preferably, the inner cavity of the corrugated pipe 5 is provided with a middle flat hole, and the outer flat of the valve rod is fixed through the middle flat hole of the inner cavity to prevent the valve rod from rotating.
Preferably, as shown in fig. 5, an oil filling hole is arranged in the upper cover 8, a metal sealing gasket 9 is arranged in the middle of the upper cover 8, and is fastened by a pipe thread hexagon socket head cap screw 10. The metal sealing gasket 9 is compressed by the aid of the thread pretightening force of the pipe thread outer hexagon bolt 10, and accordingly sealing effect is achieved.
As shown in fig. 6, the fastener assembly 14 includes a stud 14-1, a nut 14-2 and a self-locking washer 14-3, the self-locking washer 14-3 is disposed between the bellows sleeve assembly 6 and the upper cover 8, and the bellows sleeve assembly 6 and the upper cover 8 are fastened by the stud 14-1 and the nut 14-2. The self-locking gasket 14-3 is designed to have high strength, the stud 14-1 and the nut 14-2 are pre-tightened to achieve a sealing effect, and meanwhile, the added self-locking gasket 14-3 ensures that threads are not loosened.
In the embodiment of the invention, the Y-shaped valve body structure is adopted firstly, so that the strong flowability of the medium in the inner cavity of the valve body can be ensured, no dead angle exists, and crystallization blockage caused by incomplete medium discharge is avoided; meanwhile, the full jacket structure ensures that the temperature of the molten salt is kept above 200 ℃, and the crystallization phenomenon of the molten salt caused by too low temperature is avoided. Secondly, the double sealing design of the lip welding sheet and the gasket is adopted, so that the risk of leakage caused by high-temperature creep of the stud due to the high temperature of the molten salt and corrosion of the molten salt to the gasket is completely avoided; meanwhile, the corrugated pipe and packing double-sealing design adopted by the packing also completely solves the problem of leakage of the packing at the valve rod. Finally, the invention adopts a structure of upper and lower double guide of bottom valve seat guide and upper packing guide, which can solve the problem of valve core vibration caused by harsh working conditions and provide the service life of the valve internals. By combining the structure, the Y-shaped jacket molten salt regulating valve disclosed by the invention is a special valve which can completely meet the characteristics of high temperature, high oxidizability, easiness in crystallization, high melting point, corrosivity and the like of a molten salt valve.
It will be understood that the above embodiments are merely exemplary embodiments taken to illustrate the principles of the present invention, which is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.
Claims (9)
1. A Y-shaped jacket molten salt regulating valve comprises a valve body (1), a valve seat (2), a valve core (3), a valve rod (4) and an upper cover (8), wherein the valve seat (2) is installed on a positioning surface of the valve body (1); the bottom of the valve core (3) penetrates through a guide hole of the valve seat (2) through a guide rod and is installed in a valve body flow passage, and the upper part of the valve core (3) is connected with the valve rod (4); a packing component (11), a packing gland (12) and a packing pressure plate (13) are sequentially arranged in a packing box hole of the upper cover (8), and the packing pressure plate (13) and the upper cover (8) are fastened by bolts; the method is characterized in that: the valve cavity of the valve body (1) is arranged as a Y-shaped flow passage, the outer layer of the valve body (1) is wrapped by a first metal heat-insulation jacket (1-5), and first support rings (1-3) are uniformly arranged between the valve body (1) and the first metal heat-insulation jacket (1-5); the corrugated pipe sleeve assembly (6) is arranged on the upper portion of the valve body (1), a lip welding piece assembly is arranged between the valve body (1) and the corrugated pipe sleeve assembly (6), the valve rod (4) penetrates through an inner cavity of the corrugated pipe (5), the valve rod (4) and the corrugated pipe (5) are welded into an assembly and arranged in the corrugated pipe sleeve assembly (6), and the upper portion of the valve rod (4) penetrates through a packing assembly (11) arranged in the upper cover (8); a second metal heat-preservation jacket (6-2) wraps the outside of a corrugated pipe sleeve of the corrugated pipe sleeve assembly (6), the second metal heat-preservation jacket (6-2) is connected with a first metal heat-preservation jacket (1-5) of the valve body through a jacket short joint (15), and an upper cover (8) is installed on the upper portion of the corrugated pipe sleeve assembly (6) and fastened through a fastening assembly (14).
2. The Y-shaped jacket molten salt regulating valve as claimed in claim 1, wherein: the bottom of the valve seat (2) is provided with a guide hole, and a thread is arranged in the guide hole; the valve rod (4) is provided with threads, and the end part of the valve rod (4) is provided with a step.
3. The Y-shaped jacket molten salt regulating valve as claimed in claim 1, wherein: one side of the valve body (1) is provided with an inlet flow passage (1-6), the other side of the valve body is provided with an outlet flow passage (1-2), the inlet flow passage (1-6) and the outlet flow passage (1-2) are on the same axis, the axis of the valve cavity (1-7) and the axis of the flow passage form an included angle of not 90 degrees, and the valve cavity is arranged in a Y shape.
4. The Y-shaped jacket molten salt regulating valve as claimed in claim 1, wherein: the lip soldering lug assembly comprises a first lip soldering lug (1-4), a second lip soldering lug (6-1) and a gasket, wherein the first lip soldering lug (1-4), the second lip soldering lug (6-1) and the gasket are combined into a whole.
5. The Y-shaped jacket molten salt regulating valve as claimed in claim 1, wherein: the corrugated pipe sleeve assembly (6) is composed of a second metal heat-insulation jacket (6-2), a corrugated pipe sleeve body (6-3) and a second support ring (6-4), the corrugated pipe (5) is installed in the corrugated pipe body (6-3), the second metal heat-insulation jacket (6-2) is wrapped outside the corrugated pipe sleeve body (6-3), and the second support ring (6-4) is arranged between the second metal heat-insulation jacket (6-2) and the corrugated pipe sleeve body (6-3).
6. The Y-shaped jacket molten salt regulating valve as claimed in claim 1, wherein: a flat hole is formed in the inner cavity of the corrugated pipe (5), and the flat hole is used for fixing the outer flat part of the valve rod (4) and preventing the valve rod (4) from rotating.
7. The Y-shaped jacket molten salt regulating valve as claimed in claim 1, wherein: the packing assembly (11) comprises an upper section packing part, a lower section packing part and a packing spacer bush, wherein the packing spacer bush is arranged between the upper section packing part and the lower section packing part.
8. The Y-shaped jacket molten salt regulating valve as claimed in claim 1, wherein: an oil filling hole is formed in the upper cover (8), and a metal sealing gasket (9) is arranged in the upper cover (8).
9. The Y-shaped jacket molten salt regulating valve as claimed in claim 1, wherein: the fastener assembly (14) comprises a stud (14-1), a nut (14-2) and a self-locking gasket (14-3), the self-locking gasket (14-3) is arranged between the corrugated pipe sleeve assembly (6) and the upper cover (8), and the corrugated pipe sleeve assembly (6) and the upper cover (8) are fastened through the stud (14-1) and the nut (14-2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111622614.XA CN114233868A (en) | 2021-12-28 | 2021-12-28 | Y-shaped jacket molten salt regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111622614.XA CN114233868A (en) | 2021-12-28 | 2021-12-28 | Y-shaped jacket molten salt regulating valve |
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| Publication Number | Publication Date |
|---|---|
| CN114233868A true CN114233868A (en) | 2022-03-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111622614.XA Pending CN114233868A (en) | 2021-12-28 | 2021-12-28 | Y-shaped jacket molten salt regulating valve |
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| CN (1) | CN114233868A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE7501305L (en) * | 1974-02-08 | 1975-08-09 | Zimmermann & Jansen Gmbh | |
| SU838252A1 (en) * | 1979-09-20 | 1981-06-15 | Предприятие П/Я А-7899 | Rod seal |
| CN102927294A (en) * | 2012-11-10 | 2013-02-13 | 无锡智能自控工程股份有限公司 | Y-shaped straight-through jacket gas-phase valve of bellows |
| CN205745316U (en) * | 2016-05-08 | 2016-11-30 | 浙江科海仪表有限公司 | Anti-clogging leakproof fused salt Corniform regulating valve |
| CN216715249U (en) * | 2021-12-28 | 2022-06-10 | 江苏智能特种阀门有限公司 | Y-shaped jacket molten salt regulating valve |
-
2021
- 2021-12-28 CN CN202111622614.XA patent/CN114233868A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE7501305L (en) * | 1974-02-08 | 1975-08-09 | Zimmermann & Jansen Gmbh | |
| SU838252A1 (en) * | 1979-09-20 | 1981-06-15 | Предприятие П/Я А-7899 | Rod seal |
| CN102927294A (en) * | 2012-11-10 | 2013-02-13 | 无锡智能自控工程股份有限公司 | Y-shaped straight-through jacket gas-phase valve of bellows |
| CN205745316U (en) * | 2016-05-08 | 2016-11-30 | 浙江科海仪表有限公司 | Anti-clogging leakproof fused salt Corniform regulating valve |
| CN216715249U (en) * | 2021-12-28 | 2022-06-10 | 江苏智能特种阀门有限公司 | Y-shaped jacket molten salt regulating valve |
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