Pressure stabilizing and throttling device for centrifugal water chilling unit

Abstract

The utility model discloses a pressure stabilizing throttling device for a centrifugal water chilling unit, which relates to the technical field of throttling devices, and comprises a connecting pipeline, the top end of the connecting pipeline is clamped with a mounting seat, the top end of the mounting seat is fixedly connected with a limiting block, and the top end of the limiting block is in threaded connection with a screw rod. By the adoption of the structure, the bottom end of the rotating column can rotate in situ by screwing the screw rod and the rotating shaft, the connecting block inserted into the inner side of the strip-shaped opening can also prevent the throttle plate from angle deviation, and then the rotating column can be pushed or pulled to move through the screw rod so that the height of the throttle plate can be adjusted; a good pressure stabilizing and throttling effect can be achieved through blocking of the throttling plate, the sealing block can be located on the inner side of the strip-shaped opening all the time when the height of the throttling plate is adjusted, and therefore the point position of the strip-shaped opening can be effectively sealed, and normal use of the throttling plate cannot be hindered while the using sealing performance of the throttling plate is improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of throttling devices, and specifically relates to a pressure stabilizing and throttling device for centrifugal chiller units. Background Technology

[0002] The pressure stabilizing and throttling device for centrifugal chillers is designed specifically for the efficient and stable operation of airports. By precisely controlling the refrigerant flow and pressure, this device ensures that the centrifugal chiller maintains optimal cooling performance in the complex and ever-changing airport environment. Its unique pressure stabilizing and throttling technology effectively avoids pipeline pressure fluctuations and extends the service life of the unit. The device has a compact structure, is easy to install and maintain, and can quickly respond to changes in airport cooling needs, providing stable and reliable cooling for the airport's air conditioning system. Its widespread application in airports has demonstrated its superior performance and energy-saving effects.

[0003] Chinese patent with announcement number "CN212362520U" discloses a throttling device for a centrifugal chiller unit, including a connecting pipe, a fixed seat fixedly connected to the top of the connecting pipe, two mounting grooves opened on the top of the connecting pipe, and two plate slots corresponding to the mounting grooves opened on the fixed seat, with a first throttling plate and a second throttling plate slidably connected to the inner sides of the two plate slots respectively.

[0004] However, the above structure still has some shortcomings. Since the height of the throttle plate is adjusted by operating the screw, the connection of the operating screw requires the opening of a screw hole structure, which makes it difficult to achieve a good sealing effect at the connection point, thus affecting the normal use of the throttle plate. Utility Model Content

[0005] In view of the problems mentioned in the background art, the purpose of this utility model is to provide a pressure stabilizing and throttling device for centrifugal chiller units to solve the problems mentioned in the background art.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0007] A pressure-stabilizing and throttling device for a centrifugal chiller unit includes a connecting pipe, a mounting base snapped onto the top end of the connecting pipe, a limit block fixedly connected to the top end of the mounting base, a screw threadedly connected to the top end of the limit block, the screw extending into the interior of the mounting base, a rotating column fixedly connected to the bottom end of the screw, a rotating shaft rotatably connected to the bottom end of the rotating column, a connecting block fixedly connected to the bottom end of the rotating shaft, a throttling plate fixedly connected to the bottom end of the connecting block, a slotted opening matching the throttling plate at the bottom end of the mounting base, the slotted opening extending into the interior of the connecting pipe, the throttling plate located inside the slotted opening, the throttling plate covering the inner side of the connecting pipe, and a sealing block fixedly connected to the outer wall of the rotating column, the sealing block covering the inner side of the slotted opening.

[0008] As a preferred technical solution, the top of the mounting base has a rectangular opening that communicates with the interior of the mounting base. A transparent glass is fixedly connected to the inside of the rectangular opening, and the transparent glass covers the inside of the rectangular opening.

[0009] As a preferred technical solution, a fixing block is fixedly connected to the outer wall of the mounting base. The bottom end of the fixing block is in contact with the top end of the connecting pipe. A first slot is formed at the top end of the fixing block, extending into the interior of the connecting pipe. A second slot is formed on the inner wall of the first slot. A circular groove is formed at the bottom inner side of the first slot. A first locking block is engaged with the inner side of the first slot. A second locking block that matches the second slot is fixedly connected to the outer side of the first locking block. The second locking block is engaged with the inner side of the circular groove.

[0010] As a preferred technical solution, a retaining spring that matches the second retaining block is installed at the bottom inner side of the circular groove. The bottom end of the second retaining block is engaged with the top end of the retaining spring. The second retaining block is engaged with the inner side of the circular groove through the retaining spring. A sealing plate is fixedly connected to the top end of the first retaining block. The sealing plate covers the top end of the first retaining groove. A protrusion is fixedly connected to the top end of the sealing plate. The protrusion has an arc-shaped corner.

[0011] As a preferred technical solution, a rubber pad is fixedly connected to the top of the fixing block, the first slot is located on the inner side close to the rubber pad, and the top of the rubber pad is in contact with the bottom of the sealing plate.

[0012] As a preferred technical solution, the top end of the connecting pipe is provided with a positioning groove, and the bottom end of the mounting base is fixedly connected with a positioning block that matches the positioning groove. The positioning block is fixedly connected to the four sides near the corner of the bottom end of the mounting base, and the positioning block is engaged with the inside of the positioning groove.

[0013] As a preferred technical solution, a sealing ring is fixedly connected to the top end of the connecting pipe. The sealing ring is one centimeter thick and made of rubber material. The top end of the sealing ring is in contact with the bottom end of the mounting base.

[0014] In summary, the present invention has the following main advantages:

[0015] First, when the throttle plate is needed, the user can turn the screw, and the rotating shaft can make the bottom end of the rotating column rotate in place. The connecting block inserted inside the strip-shaped opening can also prevent the throttle plate from shifting at an angle. Then, the rotating column can be moved by pushing or pulling the screw to adjust the height of the throttle plate. The throttle plate can achieve a good pressure stabilization and throttling effect by blocking the flow. During the adjustment of the throttle plate height, its sealing block can always be located inside the strip-shaped opening, so as to effectively seal the point of the strip-shaped opening. While improving the sealing performance of the throttle plate, it will not hinder the normal use of the throttle plate.

[0016] Secondly, the presence of the first locking block facilitates the insertion of the second locking block into the circular groove. By adjusting the angle of the second locking block to a position that does not correspond to the second locking groove, the fixed block position can be effectively limited, preventing displacement of the mounting base structure. When it needs to be disassembled later, the user can rotate the first locking block and adjust the second locking block to a position that corresponds to the second locking groove, thereby allowing the first locking block to be pulled out directly. This also facilitates the user's disassembly of the mounting base, enabling individual maintenance or cleaning of the connecting pipes or mounting base structure later. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the top structure of the connecting pipe of this utility model;

[0019] Figure 3 This is a utility model Figure 2 A magnified structural diagram of part A;

[0020] Figure 4 This is a schematic diagram of the top structure of the fixing block of this utility model;

[0021] Figure 5 This is a schematic diagram of the first card block structure of this utility model;

[0022] Figure 6 This is a schematic diagram of the bottom structure of the mounting base of this utility model;

[0023] Figure 7 This is a schematic diagram of the screw structure of this utility model.

[0024] Reference numerals: 1. Connecting pipe; 2. Mounting base; 3. Rectangular opening; 4. Transparent glass; 5. Fixing block; 6. First slot; 7. Second slot; 8. Circular groove; 9. Snap ring; 10. Rubber pad; 11. First locking block; 12. Second locking block; 13. Sealing plate; 14. Protrusion; 15. Positioning groove; 16. Sealing ring; 17. Positioning block; 18. Limiting block; 19. Screw; 20. Strip-shaped opening; 21. Rotating column; 22. Sealing block; 23. Rotating shaft; 24. Connecting block; 25. Throttling plate. Detailed Implementation

[0025] Example

[0026] refer to Figures 1 to 7 This embodiment of a pressure stabilizing and throttling device for a centrifugal chiller unit includes a connecting pipe 1. A mounting base 2 is snapped onto the top of the connecting pipe 1. A limiting block 18 is fixedly connected to the top of the mounting base 2. A screw 19 is threadedly connected to the top of the limiting block 18, extending into the mounting base 2. A rotating column 21 is fixedly connected to the bottom of the screw 19. A rotating shaft 23 is rotatably connected to the bottom of the rotating column 21. A connecting block 24 is fixedly connected to the bottom of the rotating shaft 23. A throttling plate 25 is fixedly connected to the bottom of the connecting block 24. A strip-shaped opening 20 matching the throttling plate 25 is opened at the bottom of the mounting base 2, extending into the connecting pipe 1. The throttling plate 25 is located inside the strip-shaped opening 20, covering the connecting pipe 1. Inside the rotating column 21, a sealing block 22 is fixedly connected to the outer wall. The sealing block 22 covers the inner side of the strip-shaped opening 20. When using the throttle plate 25, the screw 19 is turned and the rotating shaft 23 can rotate the bottom end of the rotating column 21 in place. The connecting block 24 inserted inside the strip-shaped opening 20 can be effectively limited on both sides to prevent the throttle plate 25 from shifting at an angle. The rotating column 21 can be moved by pushing or pulling the screw 19 to adjust the height of the throttle plate 25. The blocking effect of the throttle plate 25 can achieve good pressure stabilization and throttling effect. During the adjustment of the height of the throttle plate 25, the sealing block 22 can always be located inside the strip-shaped opening 20, so as to effectively seal the point of the strip-shaped opening 20 and achieve a good sealing and protection effect.

[0027] refer to Figure 1 The top of the mounting base 2 has a rectangular opening 3, which communicates with the interior of the mounting base 2. A transparent glass 4 is fixedly connected to the inside of the rectangular opening 3, covering the inside of the rectangular opening 3. Because of the opening 3, the user can directly view the inside of the mounting base 2 through the transparent glass 4 without disassembling the mounting base 2, which is conducive to the user's constant observation of the use of the throttle plate 25 and can effectively improve the accuracy of the use of the throttle plate 25.

[0028] refer to Figures 1 to 6A fixing block 5 is fixedly connected to the outer wall of the mounting base 2. The bottom end of the fixing block 5 is in contact with the top end of the connecting pipe 1. A first slot 6 is formed at the top end of the fixing block 5, extending into the interior of the connecting pipe 1. A second slot 7 is formed on the inner wall of the first slot 6. A circular groove 8 is formed at the bottom inner end of the first slot 6. A first locking block 11 is engaged with the inner side of the first slot 6. A second locking block 12, matching the second slot 7, is fixedly connected to the outer side of the first locking block 11. The second locking block 12 engages with the inner side of the circular groove 8. Due to the presence of the first locking block 11, it is convenient to... The second locking block 12 is inserted into the circular groove 8. The angle of the second locking block 12 is adjusted so that it does not correspond to the angle of the second locking groove 7, thereby effectively limiting the position of the fixed block 5 and causing the structure of the mounting base 2 to shift. When it needs to be disassembled later, the user can rotate the first locking block 11 and adjust the second locking block 12 to the position corresponding to the second locking groove 7, so that the first locking block 11 can be directly pulled out. This also facilitates the user to disassemble the mounting base 2 so that the user can perform individual maintenance or cleaning on the connecting pipe 1 or the mounting base 2 structure later.

[0029] refer to Figures 1 to 6 A retaining spring 9 matching the second retaining block 12 is installed at the bottom inner side of the circular groove 8. The bottom end of the second retaining block 12 is engaged with the top end of the retaining spring 9. The second retaining block 12 is engaged with the inner side of the circular groove 8 through the retaining spring 9. A sealing plate 13 is fixedly connected to the top end of the first retaining block 11. The sealing plate 13 covers the top end of the first retaining groove 6. A protrusion 14 is fixedly connected to the top end of the sealing plate 13. The protrusion 14 has an arc-shaped corner. Due to the presence of the retaining spring 9, the retaining spring 9 can engage the second retaining block 12 at the second position, thereby effectively improving the stability of the engagement of the second retaining block 12 at the second position, and also effectively improving the stability of the engagement of the mounting base 2 at the second position.

[0030] refer to Figure 4 and Figure 5 A rubber pad 10 is fixedly connected to the top of the fixing block 5. The first slot 6 is located on the inner side close to the rubber pad 10. The top of the rubber pad 10 is in contact with the bottom of the sealing plate 13. Due to the presence of the rubber pad 10, the rubber pad 10 has good anti-slip ability and rubber rebound ability. Under the pressure of the sealing block 22, the rubber pad 10 can be squeezed. After the second locking block 12 is engaged, the rebound of the rubber pad 10 can make the second locking block 12 more stable.

[0031] refer to Figures 1 to 6The top end of the connecting pipe 1 is provided with a positioning groove 15. The bottom end of the mounting base 2 is fixedly connected with a positioning block 17 that matches the positioning groove 15. The positioning block 17 is fixedly connected to the four sides near the corner of the bottom end of the mounting base 2. The positioning block 17 is snapped into the inside of the positioning groove 15. Due to the presence of the positioning block 17, the insertion of the positioning block 17 can effectively limit the mounting base 2. While improving the accuracy of the snapping of the mounting base 2, it also improves the stability of the snapping of the mounting base 2.

[0032] refer to Figures 1 to 6 A sealing ring 16 is fixedly connected to the top of the connecting pipe 1. The sealing ring 16 is one centimeter thick and is made of rubber material. The top of the sealing ring 16 is in contact with the bottom of the mounting base 2. Due to the presence of the sealing ring 16, it can effectively seal the connection point of the mounting base 2, thereby achieving a good dustproof and waterproof effect and improving the safety of the mounting base 2.

[0033] Operating principle and advantages: When using the throttle plate 25, turning the screw 19 allows the rotating shaft 23 to rotate the bottom end of the rotating column 21 in place. The connecting block 24, inserted inside the slot 20, is effectively limited on both sides to prevent angular displacement of the throttle plate 25. The screw 19 can then push or pull the rotating column 21 to adjust the height of the throttle plate 25. The throttle plate 25 provides good pressure stabilization and throttling effects. During height adjustment, the sealing block 22 remains inside the slot 20, effectively sealing the slot 20 and providing good performance. The good sealing and protection effect, due to the opening of the rectangular opening 3, allows the user to directly view the inside of the mounting base 2 through the transparent glass 4 without disassembling the mounting base 2. This facilitates the user's constant observation of the usage status of the throttle plate 25, effectively improving the accuracy of the use of the throttle plate 25. The presence of the first locking block 11 facilitates the insertion of the second locking block 12 into the circular groove 8. Adjusting the angle of the second locking block 12 to a non-corresponding angle with the second locking groove 7 effectively limits the position of the fixing block 5, preventing displacement of the mounting base 2 structure. When it needs to be disassembled later, it can be used... The user can rotate the first locking block 11 to adjust the second locking block 12 to correspond to the second locking slot 7, thus allowing the first locking block 11 to be directly pulled out. This also facilitates the user's disassembly of the mounting base 2, enabling individual maintenance or cleaning of the connecting pipe 1 or the mounting base 2 structure later. Due to the presence of the retaining spring 9, the second locking block 12 can be engaged again, effectively improving the stability of the engagement and the overall stability of the mounting base 2. The rubber pad 10 provides excellent anti-slip properties and rubber rebound. Under the pressure of the sealing block 22, the rubber pad 10 can be squeezed. After the second locking block 12 is engaged, the rebound of the rubber pad 10 can make the engagement of the second locking block 12 more stable. Due to the presence of the positioning block 17, the insertion of the positioning block 17 can effectively limit the mounting base 2. While improving the accuracy of the engagement of the mounting base 2, it also improves the stability of the engagement of the mounting base 2. Due to the presence of the sealing ring 16, the sealing ring 16 can effectively seal the connection point of the mounting base 2, thereby achieving a good dustproof and waterproof effect, and thus improving the safety of the mounting base 2.

Claims

1. A pressure stabilizing and throttling device for a centrifugal chiller unit, comprising a connecting pipe (1), characterized in that: The top end of the connecting pipe (1) is fitted with a mounting base (2). The top end of the mounting base (2) is fixedly connected to a limiting block (18). The top end of the limiting block (18) is threadedly connected to a screw (19). The screw (19) extends into the mounting base (2). The bottom end of the screw (19) is fixedly connected to a rotating column (21). The bottom end of the rotating column (21) is rotatably connected to a rotating shaft (23). The bottom end of the rotating shaft (23) is fixedly connected to a connecting block (24). A throttling plate (25) is fixedly connected to the bottom end of (24). The bottom end of the mounting base (2) is provided with a strip-shaped opening (20) that matches the throttling plate (25). The strip-shaped opening (20) extends into the inside of the connecting pipe (1). The throttling plate (25) is located inside the strip-shaped opening (20). The throttling plate (25) covers the inside of the connecting pipe (1). A sealing block (22) is fixedly connected to the outer wall of the rotating column (21). The sealing block (22) covers the inside of the strip-shaped opening (20).

2. The pressure stabilizing and throttling device for a centrifugal chiller unit according to claim 1, characterized in that: The top of the mounting base (2) has a rectangular opening (3) that communicates with the interior of the mounting base (2). A transparent glass (4) is fixedly connected to the inside of the rectangular opening (3) and covers the inside of the rectangular opening (3).

3. A pressure stabilizing and throttling device for a centrifugal chiller unit according to claim 1, characterized in that: A fixing block (5) is fixedly connected to the outer wall of the mounting base (2). The bottom end of the fixing block (5) is attached to the top end of the connecting pipe (1). A first slot (6) is opened at the top end of the fixing block (5). The first slot (6) extends into the interior of the connecting pipe (1). A second slot (7) is opened on the inner wall of the first slot (6). A circular groove (8) is opened at the bottom inner side of the first slot (6). A first locking block (11) is engaged with the inner side of the first slot (6). A second locking block (12) that matches the second slot (7) is fixedly connected to the outer side of the first locking block (11). The second locking block (12) is engaged with the inner side of the circular groove (8).

4. A pressure stabilizing and throttling device for a centrifugal chiller unit according to claim 3, characterized in that: The inner bottom of the circular groove (8) is fitted with a retaining spring (9) that matches the second retaining block (12). The bottom of the second retaining block (12) is engaged with the top of the retaining spring (9). The second retaining block (12) is engaged with the inner side of the circular groove (8) by the retaining spring (9). The top of the first retaining block (11) is fixedly connected with a sealing plate (13). The sealing plate (13) covers the top of the first retaining groove (6). The top of the sealing plate (13) is fixedly connected with a protrusion (14). The protrusion (14) has an arc-shaped corner.

5. A pressure stabilizing and throttling device for a centrifugal chiller unit according to claim 4, characterized in that: A rubber pad (10) is fixedly connected to the top of the fixing block (5), and the first slot (6) is located on the inner side close to the rubber pad (10). The top of the rubber pad (10) is in contact with the bottom of the sealing plate (13).

6. A pressure stabilizing and throttling device for a centrifugal chiller unit according to claim 1, characterized in that: The top end of the connecting pipe (1) is provided with a positioning groove (15), and the bottom end of the mounting base (2) is fixedly connected with a positioning block (17) that matches the positioning groove (15). The positioning block (17) is fixedly connected to the four sides of the bottom end of the mounting base (2) near the corner, and the positioning block (17) is snapped into the inside of the positioning groove (15).

7. A pressure stabilizing and throttling device for a centrifugal chiller unit according to claim 1, characterized in that: A sealing ring (16) is fixedly connected to the top end of the connecting pipe (1). The sealing ring (16) is one centimeter thick and is made of rubber material. The top end of the sealing ring (16) is attached to the bottom end of the mounting base (2).

Images