A molten salt valve based on cold and hot control

Abstract

The utility model discloses a kind of fused salt valves based on cold and hot control, it is related to fused salt valve technical field.The valve includes valve body and the connecting pipe being set at the both sides of valve body, and the one end of connecting pipe is fixedly connected with connecting ring;Fixed ring is set in connecting pipe, and the one side of fixed ring is fixedly connected with sealing assembly, and sealing assembly includes support spring, movable ring and insert ring, and one end of support spring is connected with fixed ring, and the other end is connected with movable ring, and the side of movable ring away from support spring is equipped with slot, and insert ring is inserted with slot and is matched;Fixed sleeve is set in the top of connecting pipe, and the inside of fixed sleeve is sleeved with locating sheet, and the bottom surface of locating sheet is fixedly connected with telescopic component, and telescopic component includes telescopic spring and piston, and telescopic spring connects locating sheet and piston;Outer connecting pipe is set in one side of connecting ring, and the surface of outer connecting pipe is sleeved with mounting assembly, and mounting assembly includes upper clamp ring and lower clamp ring.Fused salt valve is installed conveniently, and the sealing property of junction is strengthened, and installation efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of molten salt valve technology, specifically a molten salt valve based on hot and cold control. Background Technology

[0002] Molten salt valves based on heat and cold control are commonly used in high-temperature molten salt energy storage systems and molten salt reactors. Their main purpose is to regulate the system's heat transfer and pressure by controlling the flow and temperature of the molten salt within the valve, ensuring the system's safe and efficient operation. The valves typically integrate temperature sensors to monitor real-time temperature changes in the molten salt. When the temperature change exceeds a set range, the valve automatically adjusts to adapt to changes in the viscosity of the flowing molten salt.

[0003] Utility model patent CN220016131U discloses an anti-jamming molten salt valve, including a valve body, a valve seat inserted into the valve body, a valve disc that contacts the valve seat, a backflushing disc fixedly connected to the valve disc, a guide sleeve for assisting the backflushing disc in guiding, a valve stem fixedly connected to the backflushing disc, and a drive assembly for moving the valve stem. It also includes a bellows and a protective cover coaxially arranged with the backflushing disc. The bellows is located in the inner cavity of the protective cover, with one end of the protective cover facing the backflushing disc. A connecting ring and a sealing ring are fixedly connected to both ends of the bellows, respectively. The connecting ring is fixedly connected to the backflushing disc. The guide sleeve partially penetrates the sealing ring, and the sealing ring is confined between the guide sleeve and the protective cover. The portion of the guide sleeve connected to the backflushing disc is located in the inner cavity of the bellows. The fit between the backflushing disc and the port of the protective cover prevents the medium from entering the inner cavity of the protective cover, solving the problem of jamming or clogging in existing technologies.

[0004] However, existing molten salt valves based on hot and cold control are difficult to adapt to the thermal expansion and contraction characteristics of molten salt media during use, which can easily lead to the risk of seal failure due to temperature changes, and the installation efficiency is not high. Utility Model Content

[0005] This invention provides a molten salt valve based on thermal control, which has the advantages of easy and convenient installation of molten salt valves while enhancing the sealing performance of the connection. This solves the problems of existing molten salt valves based on thermal control, which are difficult to adapt to the thermal expansion and contraction characteristics of molten salt medium during use, are prone to sealing failure due to temperature changes, and have low installation efficiency.

[0006] To facilitate convenient installation of molten salt valves while enhancing the sealing of connections, this utility model provides the following technical solution:

[0007] A molten salt valve based on hot / cold control includes a valve body and connecting pipes disposed on both sides of the valve body, wherein a connecting ring is fixedly connected to one end of each connecting pipe, and further includes:

[0008] A fixed ring is provided on the connecting pipe. A sealing assembly is fixedly connected to one side of the fixed ring. The sealing assembly includes a support spring, a movable ring, and a plug ring. One end of the support spring is connected to the fixed ring and the other end is connected to the movable ring. A slot is provided on the side of the movable ring away from the support spring. The plug ring is inserted into the slot.

[0009] A fixed sleeve is provided at the top of the connecting pipe. A positioning plate is fitted inside the fixed sleeve. A telescopic component is fixedly connected to the bottom surface of the positioning plate. The telescopic component includes a telescopic spring and a piston. The telescopic spring connects the positioning plate and the piston.

[0010] An outer tube is provided on one side of the connecting ring, and an installation assembly is sleeved on the surface of the outer tube, the installation assembly including an upper clamping ring and a lower clamping ring.

[0011] Optionally, the outer peripheral wall of the insertion ring is wrapped with an elastic sealing layer. The elastic sealing layer is made of high and low temperature resistant fluororubber. When the insertion ring and the slot of the movable ring are inserted into each other, the elastic sealing layer is squeezed and filled in the gap between them.

[0012] Optionally, the inner wall of the fixed sleeve is provided with a guide groove, and the outer peripheral wall of the piston is fixedly connected with a slider adapted to the guide groove. The slider is slidably connected in the guide groove, and the length direction of the guide groove is consistent with the movement direction of the piston.

[0013] Optionally, the mounting assembly includes an upper clamping ring fitted onto the surface of the outer pipe, with a lower clamping ring rotatably connected to one end of the upper clamping ring.

[0014] Optionally, a temperature sensor is provided on one side of the connecting pipe, and one end of the temperature sensor is electrically connected to a controller via a power line.

[0015] Optionally, a positioning rod is fixedly connected to the top of the piston, and the positioning rod is slidably connected inside the positioning plate.

[0016] Optionally, a fixing block is fixedly connected to one end of both the upper and lower clamping rings, and a slot is provided inside the fixing block.

[0017] Optionally, one set of the fixing blocks is internally rotatably connected to a limit bolt, and the bottom of the limit bolt is threadedly connected to a limit nut.

[0018] Optionally, a discharge pipe is connected through one side of the bottom of the fixed sleeve, and a connecting sleeve is provided on the top of the valve body.

[0019] Optionally, two sets of support rods are fixedly connected to the top of the connecting sleeve, and a manual adjuster is fixedly connected to the top of the support rods.

[0020] Compared with the prior art, the present invention has at least the following beneficial effects:

[0021] This molten salt valve, based on thermal control, utilizes a combination of sealing and installation components. During installation, the insert ring on the outer pipe is aligned with the movable ring and inserted. The upper and lower clamping rings then engage the outer pipe and connecting ring, causing the support spring to contract. Since the fixed ring remains in position, the support spring pushes the movable ring, keeping the movable ring and insert ring tightly pressed together. This pulls the limit bolt, causing it to engage in the groove of the fixing block. Tightening the limit nut rotates the threaded portion of the limit bolt, further pressing against the bottom surface of the fixing block. This achieves convenient installation of the molten salt valve while enhancing the sealing at the connection. The dynamic sealing adapts to the thermal expansion and contraction characteristics of the molten salt medium, reducing the risk of seal failure due to temperature changes and significantly improving installation efficiency.

[0022] This molten salt valve, based on thermal control, utilizes a positioning plate and a telescopic assembly. During operation, when the medium pressure at the inlet end of the valve is excessive, air pressure enters the fixed sleeve, compressing the piston. This causes the piston to slide within the fixed sleeve, and the telescopic spring contracts, generating elastic force. When the excess medium pressure is discharged through the discharge pipe, the telescopic spring pushes the piston back to seal. The air pressure compresses the telescopic spring, creating a pressure buffer space. This prevents damage to the internal pipes of the molten salt valve due to thermal expansion of the medium, and increases the rapid response capability in case of abnormal pressure. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the disassembled structure of this utility model;

[0025] Figure 3 This is a schematic diagram of the telescopic component structure of this utility model;

[0026] Figure 4 This is a schematic diagram of the sealing assembly structure of this utility model;

[0027] Figure 5 This is a schematic diagram of the installation component structure of this utility model.

[0028] In the diagram: 1. Valve body; 2. Connecting pipe; 3. Connecting ring; 4. Fixing ring; 5. Sealing assembly; 501. Support spring; 502. Moving ring; 503. Insert ring; 6. Fixing sleeve; 7. Positioning plate; 8. Telescopic assembly; 801. Telescopic spring; 802. Piston; 9. External pipe; 10. Mounting assembly; 1001. Upper clamping ring; 1002. Lower clamping ring; 11. Temperature sensor; 12. Controller; 13. Positioning rod; 14. Fixing block; 15. Limit bolt; 16. Limiting nut; 17. Discharge pipe; 18. Connecting sleeve; 19. Support rod; 20. Manual adjuster. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] like Figures 1 to 5 As shown, this utility model provides a molten salt valve based on hot and cold control, including a valve body 1 and connecting pipes 2 disposed on both sides of the valve body 1. One end of the connecting pipe 2 is fixedly connected to a connecting ring 3. The valve also includes: a fixing ring 4 disposed on the connecting pipe 2, a sealing assembly 5 fixedly connected to one side of the fixing ring 4, the sealing assembly 5 including a support spring 501, a movable ring 502 and a plug ring 503, one end of the support spring 501 being connected to the fixing ring 4 and the other end being connected to the movable ring 502, the movable ring 502 having a slot on the side away from the support spring 501, and the plug ring 503 being inserted into the slot; a fixing sleeve 6 disposed on the top of the connecting pipe 2, a positioning piece 7 being sleeved inside the fixing sleeve 6, a telescopic assembly 8 being fixedly connected to the bottom surface of the positioning piece 7, the telescopic assembly 8 including a telescopic spring 801 and a piston 802, the telescopic spring 801 connecting the positioning piece 7 and the piston 802; an outer pipe 9 disposed on one side of the connecting ring 3, an installation assembly 10 being sleeved on the surface of the outer pipe 9, the installation assembly 10 including an upper clamping ring 1001 and a lower clamping ring 1002.

[0031] During installation, the insertion ring 503 of the connecting outer pipe 9 is aligned with the movable ring 502 and inserted. Then, the outer pipe 9 and the connecting ring 3 are engaged and connected by the upper clamping ring 1001 and the lower clamping ring 1002, causing the support spring 501 to contract under force. Since the position of the fixed ring 4 remains unchanged, the support spring 501 pushes the movable ring 502, keeping the movable ring 502 and the insertion ring 503 always in close contact.

[0032] When in use, when the medium pressure at the inlet end of the valve is too high, the air pressure enters the fixed sleeve 6 and squeezes the piston 802, causing the piston 802 to slide in the fixed sleeve 6. The telescopic spring 801 is compressed and generates elastic force. When the excess medium pressure is discharged, the telescopic spring 801 pushes the piston 802 to re-seal. The air pressure pushes the piston 802 to compress the telescopic spring 801, forming a pressure buffer space.

[0033] This molten salt valve, based on thermal control, utilizes the sealing assembly 5 and the mounting assembly 10. During installation, the insert ring 503 on the outer pipe 9 is aligned with the movable ring 502 and inserted. Then, the upper clamping ring 1001 and the lower clamping ring 1002 engage the outer pipe 9 and the connecting ring 3, causing the support spring 501 to contract under force. Since the position of the fixed ring 4 remains unchanged, the support spring 501 pushes the movable ring 502, keeping the movable ring 502 and the insert ring 503 in close contact. This achieves the effect of convenient installation of the molten salt valve while enhancing the sealing performance at the connection. Through dynamic sealing, it adapts to the thermal expansion and contraction characteristics of the molten salt medium, reducing the risk of seal failure due to temperature changes and significantly improving installation efficiency.

[0034] This molten salt valve, based on thermal control, utilizes the positioning plate 7 and the telescopic assembly 8. During operation, when the medium pressure at the inlet end of the valve is too high, air pressure enters the fixed sleeve 6, which in turn squeezes the piston 802, causing the piston 802 to slide within the fixed sleeve 6. The telescopic spring 801 contracts under pressure, generating elastic force. When the excess medium pressure is discharged through the discharge pipe 17, the telescopic spring 801 pushes the piston 802 to re-seal. The air pressure pushes the piston 802 to compress the telescopic spring 801, forming a pressure buffer space. This prevents the internal pipes of the molten salt valve from being damaged due to thermal expansion of the medium, and increases the rapid response capability in case of abnormal pressure.

[0035] In this embodiment, the outer peripheral wall of the insertion ring 503 is wrapped with an elastic sealing layer. The elastic sealing layer is made of fluororubber resistant to high and low temperatures. When the insertion ring 503 is inserted into the slot of the movable ring 502, the elastic sealing layer is squeezed and filled in the gap between the two.

[0036] Specifically, the insertion ring 503 is fixed to the end of the outer pipe 9 near the connecting ring 3. Its outer peripheral wall is wrapped with a 1.5mm thick elastic sealing layer through a vulcanization process. The elastic sealing layer is made of high and low temperature resistant fluororubber material, which can withstand a temperature range of 20℃ to 260℃ and is suitable for the alternating hot and cold environment of molten salt medium.

[0037] When the outer pipe 9 mates with the connecting pipe 2, the insert ring 503 is inserted into the slot of the movable ring 502. At this time, the elastic sealing layer is compressed by the inner wall of the movable ring 502, resulting in a deformation of 0.3-0.5 mm, completely filling the gap between the insert ring 503 and the slot (for example, the initial gap can be 0.2-0.4 mm). Simultaneously, the support spring 501 is in a compressed state and provides a continuous thrust (thrust range 50-80 N), ensuring that the movable ring 502 always presses tightly against the elastic sealing layer, forming a double sealing structure. Therefore, both initial positioning is achieved through mechanical insertion, and gaps caused by temperature changes (such as thermal expansion when molten salt rises from 150°C to 250°C) are eliminated through elastic deformation, significantly reducing the risk of media leakage.

[0038] In this embodiment, during installation, the insert ring 503 connected to the outer pipe 9 is aligned with the movable ring 502 and inserted. The support spring 501 is compressed by force. Since the position of the fixed ring 4 remains unchanged, the support spring 501 pushes the movable ring 502, keeping the movable ring 502 and the insert ring 503 always in close contact.

[0039] In this embodiment, when the medium pressure at the inlet end of the valve is too high during use, the air pressure enters the fixed sleeve 6, which in turn squeezes the piston 802, causing the piston 802 to slide in the fixed sleeve 6. The telescopic spring 801 is compressed and generates elastic force. When the excess medium pressure is discharged through the discharge pipe 17, the telescopic spring 801 pushes the piston 802 to re-seal.

[0040] In this embodiment, the inner wall of the fixed sleeve 6 is provided with a guide groove, and the outer peripheral wall of the piston 802 is fixedly connected with a slider that is adapted to the guide groove. The slider is slidably connected in the guide groove, and the length direction of the guide groove is consistent with the movement direction of the piston 802.

[0041] Specifically, in this embodiment, the fixing sleeve 6 is a cylindrical hollow structure with two guide grooves symmetrically formed along the axial direction on its inner wall. The groove cross-section is T-shaped, and the groove width is adapted to the slider on the outer peripheral wall of the piston 802. The piston 802 is a stepped cylindrical structure, and two cuboid sliders are symmetrically welded to the outer peripheral wall of its end near the positioning piece 7, which are clearance-fitted with the groove portion of the T-shaped groove.

[0042] When the molten salt medium pressure is abnormal, the high-pressure medium enters the fixed sleeve 6, pushing the piston 802 upward. At this time, the slider slides synchronously along the guide groove, limiting the radial displacement of the piston 802. Simultaneously, the telescopic spring 801 is compressed. When the compression reaches 20mm, the piston 802 opens the passage of the discharge pipe 17, and the medium is released through the discharge pipe 17. After the pressure returns to the normal range, the telescopic spring 801 resets, pushing the piston 802 down along the guide groove and sealing the discharge pipe 17. Throughout the process, the cooperation between the slider and the groove ensures that the deviation of the piston 802's movement trajectory is ≤0.5°, avoiding sealing failure or jamming caused by the tilting of the piston 802.

[0043] Specifically, the mounting assembly 10 includes an upper clamping ring 1001 sleeved on the surface of the outer tube 9, and a lower clamping ring 1002 is rotatably connected to one end of the upper clamping ring 1001.

[0044] In this embodiment, the outer pipe 9 and the connecting ring 3 are engaged by the upper clamping ring 1001 and the lower clamping ring 1002, thereby pulling the limiting bolt 15 so that the limiting bolt 15 is engaged in the slot of the fixing block 14, and the limiting nut 16 is screwed on the thread of the limiting bolt 15 to rotate, thereby pressing the bottom surface of the fixing block 14.

[0045] Specifically, a temperature sensor 11 is provided on one side of the connecting pipe 2, and one end of the temperature sensor 11 is electrically connected to the controller 12 via a power cord.

[0046] In this embodiment, the temperature sensor 11 monitors the molten salt temperature in real time and feeds it back to the controller 12. The controller 12 drives the valve actuator to achieve precise adjustment of the valve opening to adapt to the viscosity changes of the molten salt flow.

[0047] Specifically, a positioning rod 13 is fixedly connected to the top of the piston 802, and the positioning rod 13 is slidably connected to the inside of the positioning plate 7.

[0048] In this embodiment, the sliding connection of the positioning rod 13 ensures the straightness of the piston 802's movement trajectory and prevents lateral displacement from causing seal failure.

[0049] Specifically, a fixing block 14 is fixedly connected to one end of both the upper clamping ring 1001 and the lower clamping ring 1002, and a slot is provided inside the fixing block 14.

[0050] In this embodiment, the fixing block 14 and the slot achieve quick locking between the outer pipe 9 and the connecting ring 3 through mechanical snap-fit.

[0051] Specifically, one set of fixing blocks 14 has an internal rotatable connection to a limit bolt 15, and the bottom of the limit bolt 15 is threadedly connected to a limit nut 16.

[0052] In this embodiment, pulling the limit bolt 15 causes it to engage in the slot of the fixing block 14, and turning the limit nut 16 on the limit bolt 15 causes it to rotate, thereby pressing the bottom surface of the fixing block 14. The detachable feature facilitates maintenance.

[0053] Specifically, a discharge pipe 17 is connected through one side of the bottom of the fixed sleeve 6, and a connecting sleeve 18 is provided on the top of the valve body 1.

[0054] In this embodiment, the overpressure medium is discharged directionally through the discharge pipe 17, and the support structure of the connecting sleeve 18 ensures the stability of the system.

[0055] Specifically, two sets of support rods 19 are fixedly connected to the top of the connecting sleeve 18, and a manual adjuster 20 is fixedly connected to the top of the support rods 19.

[0056] In this embodiment, the double-rod support structure of the support rod 19 enhances mechanical strength, and the manual adjuster 20 provides a manual emergency operation port, allowing for manual intervention in the event of a failure of the automatic control system.

[0057] The workflow of this utility model's technical solution is as follows:

[0058] During installation, the insert ring 503 of the connecting outer pipe 9 is aligned with the movable ring 502 and inserted. Then, the upper clamping ring 1001 and lower clamping ring 1002 engage the outer pipe 9 and connecting ring 3, causing the support spring 501 to contract under pressure. Since the position of the fixed ring 4 remains unchanged, the support spring 501 pushes the movable ring 502, keeping the movable ring 502 and the insert ring 503 tightly pressed together. This pulls the limit bolt 15, causing it to engage in the slot of the fixed block 14. Finally, the limit nut 16 is tightened. The threaded bolt 15 rotates, thereby pressing the bottom surface of the fixing block 14. During use, when the medium pressure at the inlet end of the valve is too high, air pressure enters the fixing sleeve 6, thereby pressing the piston 802, causing the piston 802 to slide in the fixing sleeve 6. The telescopic spring 801 is compressed and generates elastic force. When the excess medium pressure is discharged through the discharge pipe 17, the telescopic spring 801 pushes the piston 802 to re-seal. The air pressure pushes the piston 802 to compress the telescopic spring 801, forming a pressure buffer space.

[0059] In summary, this molten salt valve based on thermal control, through the setting of sealing component 5 and installation component 10, achieves the effect of convenient installation of molten salt valve while enhancing the sealing performance of connection. Through dynamic sealing, it adapts to the thermal expansion and contraction characteristics of molten salt medium, reducing the risk of seal failure caused by temperature changes, and significantly improving installation efficiency. Through the setting of positioning plate 7 and telescopic component 8, it avoids damage to the internal pipeline of molten salt valve caused by thermal expansion of medium, and increases the rapid response capability in case of abnormal pressure.

[0060] It should be noted that, in this document, terms such as "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0061] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A molten salt valve based on hot / cold control, comprising a valve body and connecting pipes disposed on both sides of the valve body, wherein a connecting ring is fixedly connected to one end of each connecting pipe, characterized in that, Also includes: A fixed ring is provided on the connecting pipe. A sealing assembly is fixedly connected to one side of the fixed ring. The sealing assembly includes a support spring, a movable ring, and a plug ring. One end of the support spring is connected to the fixed ring and the other end is connected to the movable ring. A slot is provided on the side of the movable ring away from the support spring. The plug ring is inserted into the slot. A fixed sleeve is provided at the top of the connecting pipe. A positioning plate is fitted inside the fixed sleeve. A telescopic component is fixedly connected to the bottom surface of the positioning plate. The telescopic component includes a telescopic spring and a piston. The telescopic spring connects the positioning plate and the piston. An outer tube is provided on one side of the connecting ring, and an installation assembly is sleeved on the surface of the outer tube, the installation assembly including an upper clamping ring and a lower clamping ring.

2. The molten salt valve based on hot and cold control according to claim 1, characterized in that, The outer peripheral wall of the insertion ring is wrapped with an elastic sealing layer. The elastic sealing layer is made of high and low temperature resistant fluororubber. When the insertion ring and the slot of the movable ring are inserted and matched, the elastic sealing layer is squeezed and filled in the gap between the two.

3. The molten salt valve based on hot and cold control according to claim 1, characterized in that, The inner wall of the fixed sleeve is provided with a guide groove, and the outer peripheral wall of the piston is fixedly connected with a slider that is adapted to the guide groove. The slider is slidably connected in the guide groove, and the length direction of the guide groove is consistent with the movement direction of the piston.

4. The molten salt valve based on hot and cold control according to claim 1, characterized in that, The mounting assembly includes an upper clamping ring that is sleeved on the surface of the outer pipe, and a lower clamping ring is rotatably connected to one end of the upper clamping ring.

5. The molten salt valve based on hot and cold control according to claim 1, characterized in that, A temperature sensor is provided on one side of the connecting pipe, and one end of the temperature sensor is electrically connected to a controller via a power cord.

6. The molten salt valve based on hot and cold control according to claim 1, characterized in that, A positioning rod is fixedly connected to the top of the piston, and the positioning rod is slidably connected to the inside of the positioning plate.

7. The molten salt valve based on hot and cold control according to claim 1, characterized in that, One end of the upper and lower clamping rings is fixedly connected to a fixing block, and the fixing block has a slot inside.

8. The molten salt valve based on hot and cold control according to claim 7, characterized in that, One set of the fixed blocks has an internal rotating connection to a limit bolt, and the bottom of the limit bolt is threadedly connected to a limit nut.

9. The molten salt valve based on hot and cold control according to claim 1, characterized in that, A discharge pipe is connected through one side of the bottom of the fixed sleeve, and a connecting sleeve is provided on the top of the valve body.

10. The molten salt valve based on hot and cold control according to claim 9, characterized in that, Two sets of support rods are fixedly connected to the top of the connecting sleeve, and a manual adjuster is fixedly connected to the top of the support rods.

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