Intelligent throttling device

Abstract

This application relates to the technical field of throttling devices, specifically to an intelligent throttling device, which includes a pressure tapping device and a throttling element. The pressure tapping device includes two flanges and pressure tapping pipes respectively fixedly mounted on the two flanges. The pressure tapping pipes communicate with the inner cavities of the flanges. The throttling element is located between the two flanges. A condenser is provided on the pressure tapping pipes, and the pressure tapping pipes communicate with the inner cavity of the condenser. The condenser is used to inject a condensing medium. By incorporating a condenser, this application significantly improves the accuracy of flow measurement and extends the service life of the equipment.

Description

Technical Field

[0001] This application relates to the field of throttling devices, and more particularly to an intelligent throttling device. Background Technology

[0002] A throttling device is a differential pressure flow meter used for flow measurement. Its core principle is to calculate the flow rate by utilizing the pressure difference generated when fluid passes through the throttling element. Throttling devices are widely used in refrigeration and heating systems. In air conditioning systems, throttling devices are used to control the pressure difference of the refrigerant between the inlet and outlet of the liquid supply pipe.

[0003] If the fluid flowing through the pressure tapping device and the throttling device is high-temperature steam, and if the high-temperature steam is allowed to directly enter the precision differential pressure transmitter, the high temperature will damage the transmitter's diaphragm and internal electronic components. Furthermore, the high temperature will cause the filling liquid to vaporize, resulting in unstable pressure in the measuring chamber. If the steam condenses into water in the pressure tapping tube, it will cause the height of the condensate column on the positive and negative pressure sides to be inconsistent, introducing huge measurement errors. Summary of the Invention

[0004] To protect the differential pressure transmitter and ensure measurement accuracy, this application provides an intelligent throttling device.

[0005] This application provides an intelligent throttling device, which adopts the following technical solution:

[0006] A smart throttling device includes a pressure tapping device and a throttling element. The pressure tapping device includes two flanges and pressure tapping pipes respectively fixed on the two flanges. The pressure tapping pipes are connected to the inner cavities of the flanges. The throttling element is located between the two flanges. A condenser is provided on the pressure tapping pipes. The pressure tapping pipes are connected to the inner cavity of the condenser. The condenser is used to inject a condensing medium.

[0007] By adopting the above technical solution, a pressure tap structure with a condenser tank is installed. This structure injects condensing medium through the condenser tank, effectively preventing high-temperature steam from directly entering the differential pressure transmitter, thereby preventing damage to the transmitter diaphragm and electronic components due to high temperatures, and also avoiding pressure fluctuations caused by the vaporization of the filling liquid. Furthermore, the use of the condenser tank reduces measurement errors caused by inconsistent heights of the steam condensate column, significantly improving the accuracy of flow measurement and extending the equipment's lifespan.

[0008] Optionally, a protective cover may also be included, which can cover the pressure pipe and the condenser.

[0009] By adopting the above technical solution, since the pressure tapping tube is thin and curved, it is easily damaged by vibration and impact during the transportation of the throttling device. The protective cover can cover the pressure tapping tube and the condenser, providing physical protection and preventing the pressure tapping tube from being damaged during the transportation of the throttling device.

[0010] Optionally, the protective cover includes a base plate and two protective shells rotatably mounted on the base plate. The base plate is placed on two flanges and has a through hole for the pressure-sensing pipe to pass through. The two protective shells are arranged radially along the flanges, and the rotation axis of the protective shells extends axially along the flanges. The protective shells have a protective state and a supporting state. When the protective shells are in the protective state, the two protective shells and the base plate enclose the pressure-sensing pipe and the condenser. When the protective shells are in the supporting state, the two protective shells are located on both sides radially on the two flanges.

[0011] By adopting the above technical solution, when transporting the throttling device, the protective shell is rotated to a protective state, allowing it to cover the pressure tapping pipe and condensate tank, thus protecting them. When the throttling device is transported to the application site and welding of the pipe to the flange is required, the protective shell is rotated to a supporting state, positioning itself on both radial sides of the flange. This provides auxiliary support for the throttling device, preventing the flange from rotating due to its structure and ensuring stable welding between the flange and the pipe. Simultaneously, when the protective shell is in the supporting state, it also provides some protection to the flange, ensuring both effective protection and practicality and flexibility.

[0012] Optionally, the base plate has multiple dust curtains on its surface near the flange. The multiple dust curtains enclose a space to accommodate the flange and the throttling device. The dust curtains have clearance holes for pipes to pass through.

[0013] By adopting the above technical solution, multiple dust curtains are installed on the side of the bottom plate of the protective cover near the flange, forming an enclosing space that isolates external dust and impurities, preventing dust from entering the critical area between the flange and the throttling device. The clearance holes on the dust curtains allow pipes to pass through, achieving protection without affecting pipe connections, thus improving the device's protective properties and environmental adaptability.

[0014] Optionally, a storage groove is provided on the surface of the base plate near the flange, and a magnet is provided on the wall of the storage groove. A counterweight is provided on the end of the dust curtain away from the base plate, and the counterweight can be inserted into the storage groove and attracted to the magnet.

[0015] By adopting the above technical solution, a counterweight is installed at the end of the dust curtain, which can minimize the swaying of the dust curtain and thus reduce its dust-proof effect. A magnetic storage slot is installed on the base plate, allowing the dust curtain to be stored in the slot, and the counterweight can be attracted and fixed by the magnet inside the slot. This structure facilitates the quick storage and release of the dust curtain, ensuring both airtightness during protection and ease of operation during equipment maintenance, thereby improving maintenance efficiency.

[0016] Optionally, the base plate is provided with a detachable locking rod, and the surface of the base plate near the flange is provided with an insertion hole that penetrates the surface of the base plate away from the flange. The insertion hole is for the locking rod to be inserted and pass through. The protective shell is provided with a locking groove for the end of the locking rod to be inserted. When the protective shell is in the protective state, the end of the locking rod is inserted into the locking groove.

[0017] By adopting the above technical solution, when the locking rod is inserted into the insertion hole and locking groove on the base plate and the protective shell, the protective shell can be mechanically locked in the protected state. This design enhances the stability of the protective cover, prevents it from being accidentally opened due to vibration or external force, and improves the safety and reliability of the device. Furthermore, the locking rod is detachable; simply removing the locking rod unlocks the protective shell, making the structure simple and easy to operate.

[0018] Optionally, the locking rod includes a locking part and an operating part. The width of the operating part is greater than the width of the locking part. A strip groove for inserting the operating part is formed on the surface of the base plate near the flange. The strip groove communicates with a socket for the locking part to be inserted and pass through. A limiting groove is formed on the side wall of the strip groove for the operating part to be inserted and rotated. When the operating part rotates to the point of being misaligned with the strip groove, the operating part abuts against the groove wall of the limiting groove.

[0019] By adopting the above technical solution, the locking rod includes a locking part and an operating part. When locking the protective shell, the locking part is inserted into the socket and locking groove, while the operating part is inserted into the strip groove. Rotating the locking rod causes the operating part to insert into the limiting groove. After rotation, the operating part abuts against the groove wall of the limiting groove, forming a self-locking effect and preventing the locking rod from falling off. This structure makes locking and unlocking operations simpler and more reliable, prevents loosening, and further enhances the stability of locking and the user experience.

[0020] Optionally, the inner wall of the protective shell is provided with a lock hole that penetrates the outer wall of the protective shell, and the side wall of the base plate is provided with a lock groove. When the protective shell is in a supported state, the lock hole and the lock groove are connected and a locking rod is inserted.

[0021] By adopting the above technical solution, when the protective shell is in the protective state, the locking rod can be removed from the insertion hole and locking groove to unlock the protective shell, allowing it to rotate to the supporting state. Then, the locking rod can be inserted into the lock hole and locking groove to fix the protective shell in the supporting state, preventing it from rotating or closing accidentally. This provides a stable working space for operators during maintenance or installation, enhancing the practicality and safety of the device.

[0022] Optionally, the base plate includes two detachably connected petal plates, each petal plate having a semi-cylindrical groove. The perforation is formed by the groove walls of the two semi-cylindrical grooves, and the two protective shells are respectively disposed on the two petal plates.

[0023] By adopting the above technical solution, the base plate is designed as two detachably connected flaps, each with a semi-cylindrical groove. When closed, they form a complete perforation for the pressure-sensing tube to pass through. This split structure facilitates the installation and disassembly of the base plate, improving the assembly convenience of the device.

[0024] In summary, this application includes at least one of the following beneficial technical effects:

[0025] 1. By installing a condensate tank, the accuracy of flow measurement and the service life of the equipment are significantly improved;

[0026] 2. When transporting the throttling device, rotate the protective shell to the protective state to protect the pressure tap and condenser. When the throttling device is transported to the application site and the pipe and flange need to be welded, rotate the protective shell to the supporting state to provide auxiliary support for the throttling device. This ensures both the protective effect and practicality and flexibility.

[0027] 3. The locking lever can lock the protective shell in both the protective and supported states. It has a simple structure and is easy to operate. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of this application.

[0029] Figure 2 This is a schematic diagram of the throttling device highlighted in Embodiment 1 of this application.

[0030] Figure 3 This is a schematic diagram of the protective shell in the protective state in Embodiment 2 of this application.

[0031] Figure 4 This is a schematic diagram of the pressure tap structure in Embodiment 2 of this application.

[0032] Figure 5 This is a schematic diagram of the structure of the protective cover in Embodiment 2 of this application.

[0033] Figure 6 yes Figure 5 Enlarged view of point A in the middle.

[0034] Figure 7 This is a schematic diagram of the locking rod in Embodiment 2 of this application.

[0035] Figure 8 yes Figure 5A cross-sectional view along the BB direction.

[0036] Figure 9 This is a schematic diagram of the protective shell in a supported state in Embodiment 2 of this application.

[0037] Figure 10 This is a schematic diagram of the lock groove structure in Embodiment 2 of this application.

[0038] Figure 11 This is a schematic diagram of the structure of the base plate in Embodiment 2 of this application.

[0039] Explanation of reference numerals in the attached drawings: 1. Pressure tapping device; 11. Flange; 12. Pressure tapping pipe; 2. Throttling device; 3. Condensate tank; 4. Protective cover; 41. Base plate; 411. Perforation; 412. Storage slot; 413. Insertion hole; 414. Strip groove; 415. Limiting groove; 416. Locking groove; 42. Protective shell; 421. Locking groove; 422. Lock hole; 5. Dustproof curtain; 51. Clearance hole; 6. Magnet; 7. Counterweight; 8. Locking rod; 81. Locking part; 82. Operating part; 821. Operating groove. Detailed Implementation

[0040] The following combination Figures 1-11 This application will be described in further detail.

[0041] Example 1:

[0042] Embodiment 1 of this application discloses an intelligent throttling device. (Refer to...) Figure 1 The intelligent throttling device includes a pressure tapping device 1 and a throttling element 2. The pressure tapping device 1 includes two flanges 11 and pressure tapping pipes 12 welded to the circumferential sidewalls of the two flanges 11 respectively. The flanges 11 have flow holes penetrating the two axial end faces of the flanges 11, giving the flanges 11 an inner cavity through which fluid flows. The pressure tapping pipes 12 communicate with the flow holes of the flanges 11.

[0043] Reference Figure 1 and Figure 2 The throttling element 2 is located between and held by the two flanges 11. The throttling element 2 has flow holes that penetrate the two axial end faces of the throttling element 2. The flow holes are connected to the flow holes on the flanges 11, and the diameter of the flow holes is smaller than the diameter of the flow holes on the flanges 11, thereby achieving the throttling effect.

[0044] In this embodiment, the throttling element 2 is an orifice plate. In other embodiments, the throttling element 2 may also be a nozzle or a venturi tube.

[0045] Reference Figure 1 A condenser 3 is welded onto the pressure tapping pipe 12. The pressure tapping pipe 12 is connected to the inner cavity of the condenser 3. The condenser 3 is used to inject condensing medium.

[0046] The implementation principle of the intelligent throttling device in Embodiment 1 of this application is as follows: if the connecting hole of the flange 11 is used for the passage of heating steam, then a condensing medium is injected into the condenser 3 to cool the hot steam, but this does not affect the pressure diversion of the hot steam or the pressure detection.

[0047] Example 2:

[0048] Reference Figure 3 and Figure 4 Unlike Embodiment 1, the intelligent throttling device in this embodiment also includes a protective cover 4. The protective cover 4 has an inner cavity for accommodating the pressure tapping pipe 12 and the condenser 3, which can protect the pressure tapping pipe 12 and the condenser 3 during the transportation of the intelligent throttling device.

[0049] Reference Figure 4 and Figure 5 The protective cover 4 includes a base plate 41, which comprises two detachably connected flaps arranged radially along the flange 11. The two flaps can be connected by snap-fit ​​or bolts. Semi-cylindrical grooves are formed on the opposing surfaces of the two flaps, and the groove walls of the two semi-cylindrical grooves enclose a through hole 411 through which the pressure-sensing pipe 12 passes. The base plate 41 rests on the two flanges 11.

[0050] Reference Figure 3 and Figure 4 The protective cover 4 also includes two protective shells 42 rotatably mounted on the two plate segments, arranged radially along the flange 11. The rotation axis of the protective shell 42 extends axially along the flange 11, and the two protective shells 42 are rotatably mounted on opposite surfaces of the two plate segments. Receiving grooves are provided on the protective shells 42. When the protective shells 42 are in a protected state, they are located on the surface of the base plate 41 away from the flange 11, and the groove walls of the receiving grooves of the two protective shells 42 and the surface of the base plate 41 away from the flange 11 enclose the pressure pipe 12 and the condenser tank 3. In other embodiments, the protective shells 42 are detachably fixedly mounted on the base plate 41.

[0051] Reference Figure 6 and Figure 7 A locking rod 8 is detachably mounted on the base plate 41. The locking rod 8 includes a locking part 81 and an operating part 82. The width of the operating part 82 is greater than the width of the locking part 81. In this embodiment, the operating part 82 is a square strip and extends in a direction perpendicular to the arrangement direction of the operating part 82 and the locking part 81. The locking part 81 is a cylindrical rod and extends in the arrangement direction of the operating part 82 and the locking part 81.

[0052] Reference Figure 7An operating groove 821 is provided on the surface of the operating part 82 away from the locking part 81. The operating groove 821 has a hexagonal cross-sectional shape and is used for inserting tools to drive the locking rod 8 to rotate.

[0053] Reference Figure 6 and Figure 8 The base plate 41 has a strip groove 414 for inserting the operating part 82 on its surface near the flange 11. The side wall of the strip groove 414 has a limiting groove 415 for inserting and rotating the operating part 82. When the operating part 82 rotates to be misaligned with the strip groove 414, the operating part 82 abuts against the groove wall of the limiting groove 415.

[0054] Reference Figure 8 The bottom wall of the groove 414 has an insertion hole 413 that penetrates the surface of the base plate 41 away from the flange 11. The insertion hole 413 is for the locking part 81 to be inserted and pass through.

[0055] Reference Figure 8 The protective shell 42 has a locking groove 421 for the locking part 81 to be inserted. When the protective shell 42 is in the protective state, the locking groove 421 is connected to the insertion hole 413. The end of the locking part 81 passes through the insertion hole 413 and is inserted into the locking groove 421, thereby locking the protective shell 42.

[0056] In other embodiments, the limiting groove 415 may not be provided, and the locking rod 8 may be fixed to the base plate 41 by means of a snap-fit ​​connection.

[0057] Reference Figure 9 The protective shell 42 also exists in a supported state. When the protective shell 42 is rotated to the supported state, the two protective shells 42 are located on both sides radially of the two flanges 11. The protective shells 42 are in contact with the surface of the ground or other structures, thereby providing auxiliary support for the flanges 11. A main support component (not shown in the figure) is also fixedly installed on the side of the flange 11 away from the base plate 41.

[0058] Reference Figure 9 and Figure 10 The inner wall of the protective shell 42 is provided with a lock hole 422 that penetrates the outer wall of the protective shell 42, and the side wall of the base plate 41 is provided with a lock groove 416. When the protective shell 42 is in the supported state, the lock hole 422 communicates with the lock groove 416 and allows the locking part 81 of the locking rod 8 to be inserted, thereby locking the protective shell 42.

[0059] Reference Figure 9 and Figure 11A receiving groove 412 is formed on the surface of the base plate 41 near the flange 11. The receiving groove 412 is a square annular groove, and a dustproof curtain 5 is fixedly installed on the groove wall. Each petal plate is provided with three dustproof curtains 5, which are connected in sequence. The two petal plates and the multiple dustproof curtains 5 on them form a receiving space to accommodate the flange 11 and the throttling device 2. Each adjacent dustproof curtain 5 on the two petal plates is provided with a clearance hole 51 for the pipe to pass through.

[0060] Reference Figure 5 and Figure 9 and Figure 11 A magnet 6 is fixedly installed on the wall of the storage slot 412. A counterweight 7 is fixedly installed on the end of the dust curtain 5 away from the base plate 41. The counterweight 7 is U-shaped and can be fixedly connected to the three dust curtains 5 on the petal body. The counterweight 7 is an iron block. When the dust curtain 5 is stored in the storage slot 412, the counterweight 7 can be inserted into the storage slot 412 and attracted to the magnet 6, thereby fixing the counterweight 7.

[0061] The implementation principle of the intelligent throttling device in Embodiment 2 of this application is as follows: When transporting the intelligent throttling device, the protective shell 42 is first rotated to the protective state, so that the protective cover 4 covers the pressure pipe 12 and the condenser tank 3, and the locking rod 8 is inserted into the insertion hole 413, the limiting groove 415 and the locking groove 421 to lock the protective shell 42. After transportation to the destination, when welding the pipe and the flange 11 is to be performed, the protective shell 42 is rotated to the supporting state, and the locking rod 8 is removed and inserted into the locking groove 416 and the locking hole 422 to lock the protective shell 42. After welding is completed, the dust curtain 5 in the storage groove 412 is unfolded.

[0062] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An intelligent throttling device, characterized in that: The device includes a pressure tapping device (1), a throttling device (2), and a protective cover (4). The pressure tapping device (1) includes two flanges (11) and pressure tapping pipes (12) respectively fixed on the two flanges (11). The pressure tapping pipes (12) are connected to the inner cavity of the flanges (11). The throttling device (2) is located between the two flanges (11). A condenser (3) is provided on the pressure tapping pipes (12). The pressure tapping pipes (12) are connected to the inner cavity of the condenser (3). The condenser (3) is used to inject condensing medium. The protective cover (4) can cover the pressure pipe (12) and the condenser (3). The protective cover (4) includes a base plate (41) and two protective shells (42) rotatably mounted on the base plate (41). The base plate (41) is placed on two flanges (11). The base plate (41) has a through hole (411) for the pressure pipe (12) to pass through. The two protective shells (42) are arranged radially along the flanges (11). The rotation axis of the protective shells (42) extends axially along the flanges (11). The protective shells (42) have a protective state and a supporting state. When the protective shells (42) are in the protective state, the two protective shells (42) and the base plate (41) enclose and cover the pressure pipe (12) and the condenser (3). When the protective shells (42) are in the supporting state, the two protective shells (42) are located on both sides radially on the two flanges (11). The base plate (41) has multiple dust curtains (5) on its surface near the flange (11). The multiple dust curtains (5) enclose a space for accommodating the flange (11) and the throttling device (2). The dust curtains (5) have clearance holes (51) for pipes to pass through. The base plate (41) has a storage groove (412) on its surface near the flange (11). The groove wall of the storage groove (412) is provided with a magnet (6). The end of the dust curtain (5) away from the base plate (41) is provided with a counterweight (7). The counterweight (7) can be inserted into the storage groove (412) and attracted to the magnet (6).

2. The intelligent throttling device according to claim 1, characterized in that: The base plate (41) is provided with a detachable locking rod (8). The surface of the base plate (41) near the flange (11) is provided with an insertion hole (413) that penetrates the surface of the base plate (41) away from the flange (11). The insertion hole (413) is for the locking rod (8) to be inserted and pass through. The protective shell (42) is provided with a locking groove (421) for the end of the locking rod (8) to be inserted. When the protective shell (42) is in the protective state, the end of the locking rod (8) is inserted into the locking groove (421).

3. The intelligent throttling device according to claim 2, characterized in that: The locking rod (8) includes a locking part (81) and an operating part (82). The width of the operating part (82) is greater than that of the locking part (81). A strip groove (414) for inserting the operating part (82) is provided on the surface of the base plate (41) near the flange (11). The strip groove (414) is connected to the insertion hole (413). The insertion hole (413) is for the locking part (81) to be inserted and pass through. A limiting groove (415) for inserting and rotating the operating part (82) is provided on the side wall of the strip groove (414). When the operating part (82) rotates to be misaligned with the strip groove (414), the operating part (82) abuts against the groove wall of the limiting groove (415).

4. The intelligent throttling device according to claim 2, characterized in that: The inner wall of the protective shell (42) is provided with a lock hole (422) that penetrates the outer wall of the protective shell (42), and the side wall of the bottom plate (41) is provided with a lock groove (416). When the protective shell (42) is in a supported state, the lock hole (422) and the lock groove (416) are connected and the locking rod (8) is inserted.

5. The intelligent throttling device according to claim 1, characterized in that: The base plate (41) includes two detachably connected petal plates. A semi-cylindrical groove is provided on the petal plate. The perforation (411) is formed by the groove walls of the two semi-cylindrical grooves. The two protective shells (42) are respectively provided on the two petal plates.

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