Low-lift hydrophobic pump

Abstract

This utility model discloses a low-pressure heater condensate pump, relating to the field of low-pressure heater condensate pump technology. It includes a pump body with an inlet pipe and an outlet pipe. A disassembly / assembly unit is provided on the outside of the inlet and outlet pipes. The disassembly / assembly unit has a limiting plate, and a transmission component is respectively provided on the limiting plate. A transmission component two is provided at the corner of the pump body for synchronously driving the two transmission components one to rotate. A drive component is also provided on the pump body for driving the transmission component two to rotate. This low-pressure heater condensate pump, through the synchronous driving of transmission components one and two by the drive component, achieves a transition from manual to semi-automatic disassembly / assembly. The optimized design of the transmission structure and the introduction of an automated drive system significantly improve the ease of operation, safety, reliability, and intelligence level of the low-pressure heater condensate pump in nuclear power plant scenarios, while maintaining the advantages of existing convenient disassembly / assembly and sealing performance.

Description

Technical Field

[0001] This utility model relates to the field of low-pressure condensate pump technology, specifically a low-pressure condensate pump. Background Technology

[0002] A low-pressure heater condensate pump, as the name suggests, is a type of condensate pump used in low-pressure heater (usually referred to as "low-pressure heater") systems. In industrial facilities such as nuclear power plants or thermal power plants, low-pressure heaters are devices that use steam extracted from a steam turbine to preheat feedwater, and condensate refers to the condensate produced during the heating process. Because this condensate may contain impurities or needs to overcome a certain pressure difference during transmission, a specialized pump is required to handle this condensate to ensure the normal operation and efficiency of the system.

[0003] A Chinese patent with publication number CN202510220664.7 discloses a convenient disassembly and assembly low-pressure heater condensate pump for nuclear power plants. By setting up a connecting component, the operator can insert a mating ring into the connecting groove and rotate it 90°, which in turn causes the trigger ring to rotate 90° synchronously. The limiting component then fixes and limits the trigger ring, making the mating ring firmly connected to the connecting plate. At the same time, the delivery pipe and the inlet and outlet pipes are fixedly connected by a sliding cylinder. This allows the operator to quickly install the delivery pipe at the inlet and outlet pipes by simply rotating it 90°, providing portability for the operator and effectively improving the installation efficiency.

[0004] In actual operation, the mating ring, as a key rotating component in the assembly / disassembly unit, functions not only to align the delivery pipe with the pump body, but more importantly, to drive a series of interconnected mechanisms to complete the entire locking and sealing process. Specifically, during installation, after the worker inserts the mating ring of the delivery pipe into the connecting groove on the connecting plate, they must manually rotate the ring approximately 90° to trigger the subsequent locking mechanism. During this rotation, the mating ring must overcome its own inertia and frictional resistance, and simultaneously drive multiple mechanical components connected to it, such as the trigger ring, synchronizing plate, rotating cylinder, and limiting plate, to rotate together. These components are interconnected through a precise structural design. For example, the trigger ring is fixedly connected to the synchronizing plate, which in turn forms an integral motion relationship with the rotating cylinder, which further drives the limiting plate to rotate synchronously. Simultaneously, the rotation causes the torsion spring to compress and deform, providing a restoring force to ensure that each component automatically returns to its initial position during disassembly.

[0005] During operation, workers experience not only the force required for a single rotational motion, but also a combined load generated by the coordinated action of multiple structural components, including mechanical transmission resistance, the elastic force of the torsion spring, and the counterforce of the limit spring rod. This complex operational load makes manual rotation quite strenuous, especially during prolonged continuous operation or frequent disassembly and assembly, easily leading to operator fatigue and affecting work efficiency and operational safety.

[0006] Therefore, we propose a low-pressure hydrophobic pump. Utility Model Content

[0007] (a) Technical problems to be solved

[0008] To address the shortcomings of existing technologies, this invention provides a low-pressure condensate pump, which can effectively solve the problems in the background technology.

[0009] (II) Technical Solution

[0010] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a low-pressure condensate pump, including a pump body, an inlet pipe and an outlet pipe provided on the pump body, a disassembly and assembly unit provided on the outside of the inlet pipe and the outlet pipe of the pump body, a limit plate provided on the disassembly and assembly unit, a transmission component one provided on the limit plate, a transmission component two provided at the corner of the pump body for synchronously driving the two transmission components one to rotate, and a drive component for driving the transmission component two to rotate on the pump body.

[0011] Furthermore, the drive component includes an external bracket, which is fixedly connected to the outer side wall of the pump body. A motor is fixedly connected to the outer side wall of the external bracket, and the output shaft end of the motor is fixedly connected to the transmission component.

[0012] Furthermore, the transmission component includes an outer plate, and a limiting component is provided between the outer plate and the edge of the limiting disk. An arc-shaped bracket is fixedly connected to the bottom of the outer plate, and a plurality of transmission teeth arranged in a ring around the limiting disk are fixedly connected to the outer wall of the arc-shaped bracket.

[0013] Furthermore, the pump body has a transmission cavity inside for accommodating the second transmission component.

[0014] Furthermore, the second transmission component includes two transmission rods, each of which passes through the transmission cavity of the pump body. The adjacent sides of the two transmission rods are respectively fixedly connected to meshing helical gears. The ends of the two transmission rods away from the helical gears are fixedly connected to drive gears. The output shaft end of the motor is fixedly connected to the shaft of the drive gear located on the side, and the drive gear meshes with the transmission gear.

[0015] Furthermore, a rectangular groove is provided on the limiting plate, and limiting grooves are provided on the outer plate and the arc-shaped bracket;

[0016] The limiting component includes a limiting rod, a limiting block with a trapezoidal cross-section is fixedly connected to the top of the limiting rod, the limiting block can slide on the inner wall of the limiting groove, a spring is provided on the outer surface of the limiting rod, the upper and lower ends of the spring are fixedly connected to the limiting block and the limiting groove respectively, and an arc-shaped bracket extends from the bottom of the limiting rod and a pull block is fixedly connected thereto.

[0017] (III) Beneficial Effects

[0018] Compared with the prior art, the present invention provides a low-pressure hydrophobic pump, which has the following beneficial effects:

[0019] 1. This low-pressure condensate pump, through the synchronous driving of the drive component to drive the transmission component one and the transmission component two, realizes the transition from manual to semi-automatic disassembly. The optimized design of the transmission structure and the introduction of the automated drive system significantly improve the ease of operation, safety, reliability and intelligence of the low-pressure condensate pump in nuclear power plant scenarios. It continues the advantages of the existing convenient disassembly and sealing performance, and has good engineering promotion value and application prospects.

[0020] 2. This detachable structure achieves rapid positioning and fixation through the cooperation of the limiting block and the rectangular groove, and can complete the assembly or disassembly operation without the use of additional tools, which significantly improves the operational efficiency of the equipment during on-site installation, commissioning and subsequent maintenance. Attached Figure Description

[0021] Figure 1 A schematic diagram of the overall structure of the low-pressure condensate pump provided by this utility model;

[0022] Figure 2 A partial cross-sectional structural diagram of the low-pressure condensate pump provided by this utility model;

[0023] Figure 3 for Figure 2 An enlarged schematic diagram of A shown;

[0024] Figure 4 This is a structural schematic diagram of the transmission component provided by this utility model.

[0025] The following are the labels in the diagram: 1. Pump body; 2. Inlet pipe; 3. Outlet pipe; 4. Transmission chamber; 5. Assembly / disassembly unit; 6. Limiting plate; 7. External bracket; 8. Motor; 9. External plate; 10. Arc-shaped bracket; 11. Transmission gear; 12. Transmission rod; 13. Helical gear; 14. Drive gear; 15. Limiting rod; 16. Limiting block; 17. Spring; 18. Pull block. Detailed Implementation

[0026] To make the technical means, creative features, and achieved objectives and effects of this utility model readily understandable, the present utility model will be further described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0027] To address the shortcomings of existing technologies, such as Figure 1-4 As shown, this utility model provides a low-pressure condensate pump, including a pump body 1, an inlet pipe 2 and an outlet pipe 3 on the pump body 1, a disassembly unit 5 on the outside of the inlet pipe 2 and the outlet pipe 3 of the pump body 1, a limit plate 6 on the disassembly unit 5, a transmission component 1 on the limit plate 6, a transmission component 2 for synchronously driving the two transmission components 1 to rotate at the corner of the pump body 1, and a drive component for driving the transmission component 2 to rotate on the pump body 1.

[0028] The specific structure and disassembly / assembly method of disassembly / assembly unit 5 and limit plate 6 are disclosed in the public account.

[0029] The portable low-pressure heater condensate pump for nuclear power plants described in CN202510220664.7 is not elaborated upon here.

[0030] The drive unit includes an external bracket 7, which is fixedly connected to the outer side wall of the pump body 1. A motor 8 is fixedly connected to the outer side wall of the external bracket 7, and the output shaft end of the motor 8 is fixedly connected to the transmission component.

[0031] The model 8 of this motor is an N10 micro motor. Due to its compact design, it is very suitable for space-constrained applications. It typically operates at a low voltage, making it suitable for battery-powered portable or mobile devices. Its low-power design allows it to reduce power consumption without sacrificing performance, thus extending device uptime.

[0032] The N10 micro motor uses a PID control algorithm, which can dynamically adjust the motor PWM signal output according to the difference between the target angle and the actual feedback angle, so as to accurately adjust the motor speed and direction.

[0033] By setting an N10 micro motor as a power source, its output shaft is connected to and drives the drive gear 14 meshing with it to rotate. After the drive gear 14 rotates, it drives the transmission rod 12 fixedly connected to it and the helical gear 13 meshing with it to rotate synchronously. The helical gear 13 meshes with the helical gear 13 on the other side, thereby transmitting power to the transmission rod 12 and drive gear 14 on the opposite side, forming a double-sided synchronous transmission structure. During the rotation process, the two drive gears 14 mesh with the externally fixed transmission gear 11 respectively, so that the transmission gear 11 completes the rotation action with the limit plate 6 as the rotation center, thereby realizing the linkage control of the entire transmission system.

[0034] The transmission component includes an outer plate 9. A limiting component is provided between the outer plate 9 and the edge of the limiting disk 6. The bottom of the outer plate 9 extends to the bottom of the limiting disk 6 and is fixedly connected to an arc-shaped bracket 10. Multiple transmission teeth 11 arranged in a ring around the limiting disk 6 are fixedly connected to the outer wall of the arc-shaped bracket 10.

[0035] When the drive gear 14 rotates, it transmits power to the transmission gear 11, thereby driving the arc-shaped bracket 10 and the limiting plate 6 to rotate synchronously. The limiting plate 6 can accurately rotate to a predetermined angle under the driving force of the transmission gear 11, which facilitates subsequent disassembly or installation operations.

[0036] It should be noted that the number of transmission teeth 11 can support the limit disk 6 to rotate more than 90 degrees.

[0037] The pump body 1 has a transmission cavity 4 inside for accommodating the transmission component 2. The transmission component 2 includes two transmission rods 12, which pass through the transmission cavity 4 of the pump body 1. The adjacent sides of the two transmission rods 12 are respectively fixedly connected to meshing helical gears 13. The ends of the two transmission rods 12 away from the helical gears 13 are fixedly connected to drive gears 14. The output shaft end of the motor 8 is fixedly connected to the shaft of the drive gear 14 located on the side. The drive gear 14 meshes with the transmission gear 11.

[0038] This structure enables synchronous rotation and reverse transmission of the dual-side limiting discs 6, ensuring consistency and stability of the two-side assembly and disassembly units 5 during operation, and avoiding jamming or misalignment caused by off-center loading.

[0039] It should be noted that the bottom dimension of the arc-shaped bracket 10 on the side adjacent to the pump body 1 is smaller than the inner side of the tooth root of the transmission gear 11. The motor 8 and the drive gear 14 are located outside the limiting plate 6. When the limiting plate 6 needs to be removed, collision should be avoided. During installation, the drive gear 14 and the transmission gear 11 can be re-engaged and driven by the motor 8.

[0040] The limiting plate 6 has a rectangular groove, and the outer plate 9 and the arc-shaped bracket 10 have limiting grooves. The limiting component includes a limiting rod 15, and a limiting block 16 with a trapezoidal cross-section is fixedly connected to the top of the limiting rod 15. The limiting block 16 can slide on the inner wall of the limiting groove. A spring 17 is provided on the outer surface of the limiting rod 15. The upper and lower ends of the spring 17 are fixedly connected to the limiting block 16 and the limiting groove, respectively. An arc-shaped bracket 10 extends from the bottom of the limiting rod 15 and a pull block 18 is fixedly connected to it.

[0041] During installation, by aligning the outer plate 9 with the outer wall of the limiting plate 6, and by applying a pushing force to the outer plate 9, the upper and lower ends of the inner wall of the outer plate 9 slide on the outside of the limiting plate 6. When the limiting block 16 contacts the limiting plate 6, its inclined surface is gradually squeezed, causing the limiting block 16 to retract into the limiting groove and squeeze the spring 17 until the limiting block 16 retracts to a position flush with the limiting groove. Then, the outer plate 9 is pushed. However, after the limiting block 16 moves to a position flush with the upper and lower rectangular groove of the limiting plate 6, the restoring force applied by the spring 17 drives the limiting block 16 to move into the rectangular groove until its end. At this time, both the outer plate 9 and the limiting plate 6 are in a fixed state.

[0042] When disassembly is required, by pulling the two pull blocks 18, the pull blocks 18 drive the limit block 16 to retract to a position flush with the limit groove via the limit rod 15, thus separating the outer plate 9 and the limit plate 6.

[0043] The working principle of this utility model is as follows: by starting the motor 8, the output shaft of the motor 8 drives any one of the drive gears 14 to rotate. After the drive gear 14 rotates, it drives the helical gear 13 on the same transmission rod 12 to rotate. After the helical gear 13 rotates, it drives another helical gear 13 and the transmission rod 12 and drive gear 14 on it to rotate. After the two drive gears 14 rotate, they will drive the transmission teeth 11 that are meshed on the outside to rotate. The transmission teeth 11 will rotate around the limiting disk 6 as the axis until it rotates 90 degrees. Then, the disassembly operation of a convenient disassembly and assembly low-pressure heater condensate pump for nuclear power plants, as disclosed in CN202510220664.7, can be continued.

[0044] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A low-pressure condensate pump, comprising a pump body (1), wherein an inlet pipe (2) and an outlet pipe (3) are provided on the pump body (1), and a disassembly unit (5) is provided on the outside of the inlet pipe (2) and the outlet pipe (3) of the pump body (1), wherein a limit plate (6) is provided on the disassembly unit (5), characterized in that: The limiting disk (6) is provided with a transmission component one, and the pump body (1) is provided with a transmission component two for synchronously driving the two transmission components one to rotate at its corners. The pump body (1) is also provided with a driving component for driving the transmission component two to rotate. The drive unit includes an external bracket (7), which is fixedly connected to the outer side wall of the pump body (1). A motor (8) is fixedly connected to the outer side wall of the external bracket (7), and the output shaft end of the motor (8) is fixedly connected to the transmission component. The transmission component includes an outer plate (9), a limiting element is provided between the outer plate (9) and the edge of the limiting disk (6), an arc-shaped bracket (10) is fixedly connected to the bottom of the outer plate (9), and a plurality of transmission teeth (11) arranged in a ring around the limiting disk (6) are fixedly connected to the outer side wall of the arc-shaped bracket (10); The pump body (1) has a transmission cavity (4) inside for accommodating the second transmission component; The transmission component 2 includes two transmission rods (12), which pass through the transmission chamber (4) of the pump body (1) respectively. The adjacent sides of the two transmission rods (12) are respectively fixedly connected to mutually meshing helical gears (13). The ends of the two transmission rods (12) away from the helical gears (13) are fixedly connected to a drive gear (14). The output shaft end of the motor (8) is fixedly connected to the axis of the drive gear (14) located on the side. The drive gear (14) meshes with the transmission gear (11).

2. The low-pressure condensate pump according to claim 1, characterized in that: The limiting plate (6) has a rectangular groove, and the outer plate (9) and the arc bracket (10) have limiting grooves. The limiting component includes a limiting rod (15), and a limiting block (16) with a trapezoidal cross-section is fixedly connected to the top of the limiting rod (15). The limiting block (16) can slide on the inner wall of the limiting groove. A spring (17) is provided on the outer surface of the limiting rod (15). The upper and lower ends of the spring (17) are fixedly connected to the limiting block (16) and the limiting groove, respectively. An arc-shaped bracket (10) extends from the bottom of the limiting rod (15) and is fixedly connected to a pull block (18).

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