High-stability variable-frequency constant-pressure water supply equipment

Abstract

The utility model belongs to fluid delivery and intelligent control technical field especially relates to a high stability variable frequency constant pressure water supply equipment, including protection box, flap, support plate and water supply tank etc.

Description

Technical Field

[0001] This utility model belongs to the field of fluid transportation and intelligent control technology, and in particular relates to a highly stable variable frequency constant pressure water supply device. Background Technology

[0002] With the acceleration of urbanization and the increasing demands of people for water supply quality, variable frequency constant pressure water supply equipment has been widely used in residential buildings, commercial buildings, industrial production and other fields due to its advantages such as energy saving, high efficiency, stable pressure and high degree of automation.

[0003] However, during long-term operation, traditional variable frequency constant pressure water supply equipment inevitably generates significant mechanical vibrations due to changes in operating conditions such as pump start-up and shutdown, dynamic flow regulation, and fluid impact. Without effective vibration reduction measures, these vibrations will not only disrupt the dynamic balance of the equipment itself, but will also be transmitted outward through the support structure and pipeline system, superimposing to form periodic loads, increasing the risk of structural resonance, reducing the stability of equipment operation, and affecting the long-term reliable operation of the entire machine.

[0004] Therefore, a highly stable variable frequency constant pressure water supply equipment is needed to solve the above problems. Utility Model Content

[0005] In order to overcome the shortcomings of traditional variable frequency constant pressure water supply equipment, which is prone to resonance due to vibration transmission, resulting in unstable operation and affecting the long-term reliable operation of the whole machine, this utility model provides a highly stable variable frequency constant pressure water supply equipment.

[0006] This utility model is achieved through the following technical approach: A highly stable variable frequency constant pressure water supply device includes a protective box, a flap, a support plate, a buffer assembly, a water supply tank, a first water pump, an inlet pipe, a first connecting pipe, a second water pump, a pumping pipe, a second connecting pipe, a booster pump, a water supply pipe, a pressure gauge, and a frequency converter. Two flaps arranged side-by-side are rotatably mounted on the front of the protective box. The support plate is slidably mounted inside the lower part of the protective box. The water supply tank is installed on top of the support plate. The first water pump is installed on one side of the top of the water supply tank, with an inlet pipe fixedly connected to its pumping end. The first connecting pipe is fixedly connected to the outlet end of the first water pump and extends into the water supply tank. The second pump is also installed on top of the support plate. The water supply tank is located behind the second pump. The pumping pipe is fixed to the pumping end of the pump and connected to the inside of the water supply tank. The second connecting pipe is fixed to the outlet end of the second pump. Pressure gauges are installed at one end of the first connecting pipe and one end of the second connecting pipe. The booster pump is also installed on top of the support plate and located to the left of the water supply tank. The second connecting pipe is connected to the inlet end of the booster pump, and the water supply pipe is fixed to the outlet end of the booster pump. The frequency converter is installed on top of the support plate and located in front of the water supply tank. The first pump, the second pump, the booster pump, and the pressure gauges are all electrically connected to the frequency converter. The buffer assembly is set between the protective box and the support plate.

[0007] As a preferred technical solution of this utility model, the buffer assembly includes a damper, a buffer bladder, an air inlet pipe, an air outlet pipe, and a valve. A damper is provided between the support plate and multiple corners of the protective box. The fixed end of the damper is connected to the protective box, and the movable end is connected to the support plate. The buffer bladder is fixedly connected to the lower part of the protective box. The support plate is located above the buffer bladder. An air inlet pipe and an air outlet pipe are fixedly connected to the left side of the buffer bladder. A valve is provided at one end of both the air inlet pipe and the air outlet pipe.

[0008] As a preferred technical solution of this utility model, it also includes a water level detector, a detection rod and a controller. The water level detector is installed on the other side of the top of the water supply tank, and the detection rod provided at its lower part extends into the interior of the water supply tank. The controller is installed at the front of the water supply tank, and the water pump is electrically connected to the controller.

[0009] As a preferred technical solution of this utility model, it also includes a pull plate, and a pull plate is installed on each flip plate.

[0010] As a preferred technical solution of this utility model, it also includes a buffer pad. Two vertically distributed buffer pads are fixed to the left side of the protective box, and the water inlet pipe and water supply pipe respectively pass through the two buffer pads to the outside of the protective box.

[0011] As a preferred technical solution of this utility model, the bottom end of the detection rod contacts the bottom of the water supply tank.

[0012] Beneficial effects: 1. By setting up a buffer assembly consisting of a damper, a buffer bladder, an air inlet pipe, an air outlet pipe, and valves, when the support plate is disturbed by the vibration generated by the operation of water pump 1, water pump 2, booster pump, and frequency converter, the damper suppresses high-frequency vibration through damping energy dissipation, while the buffer bladder absorbs low-frequency impact energy through gas compression deformation. The two work together to achieve wide-range vibration suppression, effectively buffering and absorbing vibration energy during equipment operation, significantly reducing the risk of structural resonance, greatly improving the high stability of equipment operation, and extending the service life of the whole machine.

[0013] 2. Through the cooperation of water level detector, detection rod and controller, real-time monitoring and intelligent control of water level in water supply tank can be realized. When the water level in water supply tank is detected to be close to the lower limit, the controller automatically starts water pump one to replenish water, avoid water supply interruption or water pump two running dry, ensure the continuous and stable operation of the system, and improve the degree of automation and operation safety. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0015] Figure 2 This is a three-dimensional structural diagram of the protective box, flap, and pull plate components of this utility model.

[0016] Figure 3 This is a three-dimensional structural diagram of the support plate, damper, and buffer bladder of this utility model.

[0017] Figure 4 This is a three-dimensional structural diagram of the components of this utility model, including the air inlet pipe, air outlet pipe, and valve.

[0018] Figure 5 This is a three-dimensional structural diagram of the booster pump, water supply pipe, and pressure gauge components of this utility model.

[0019] The following are marked in the diagram: 1. Protective box, 2. Flip plate, 3. Pull plate, 4. Support plate, 5. Damper, 6. Buffer bladder, 7. Air inlet pipe, 8. Air outlet pipe, 9. Valve, 10. Water supply tank, 11. Water pump one, 12. Water inlet pipe, 13. Connecting pipe one, 14. Water pump two, 15. Water pumping pipe, 16. Connecting pipe two, 17. Booster pump, 18. Water supply pipe, 19. Pressure gauge, 20. Frequency converter, 21. Water level detector, 22. Detection rod, 23. Controller, 24. Buffer pad. Detailed Implementation

[0020] Example: A highly stable variable frequency constant pressure water supply device, such as... Figures 1-5As shown, the system includes a protective box 1, a flap 2, a pull plate 3, a support plate 4, a buffer assembly, a water supply tank 10, a first water pump 11, an inlet pipe 12, a first connecting pipe 13, a second water pump 14, a pumping pipe 15, a second connecting pipe 16, a booster pump 17, a water supply pipe 18, a pressure gauge 19, a frequency converter 20, and a buffer pad 24. The front of the protective box 1 has two flaps 2 arranged side-by-side, each flap 2 bolted with a pull plate 3. The support plate 4 is slidably mounted. Inside the lower part of the protective box 1, the water supply tank 10 is bolted to the top of the support plate 4. The first water pump 11 is bolted to the rear side of the top of the water supply tank 10, with its pumping end facing left and fixedly connected to the inlet pipe 12. The first connecting pipe 13 is fixedly connected to the outlet end of the first water pump 11 and extends into the water supply tank 10. The second water pump 14 is also bolted to the top of the support plate 4. The water supply tank 10 is located behind the second water pump 14. The pumping pipe 15 is fixedly connected to the pumping end of the second water pump. The first connecting pipe 13 is bolted to the top of the support plate 4 and connected to the inside of the water supply tank 10. The second connecting pipe 16 is fixedly connected to the outlet end of the second water pump 14. The upper end of the first connecting pipe 13 and the front end of the second connecting pipe 16 are both bolted to pressure gauges 19. The booster pump 17 is also bolted to the top of the support plate 4 and is located to the left of the water supply tank 10. The second connecting pipe 16 is connected to the inlet end of the booster pump 17. The water supply pipe 18 is fixedly connected to the outlet end of the booster pump 17. The frequency converter 20 is bolted to the top of the support plate 4. Located in front of the water supply tank 10, the first water pump 11, the second water pump 14, the booster pump 17 and the pressure gauge 19 are all electrically connected to the frequency converter 20. The buffer assembly is set between the protective box 1 and the support plate 4. Two vertically distributed buffer pads 24 are fixedly connected to the left side of the protective box 1. The inlet pipe 12 and the supply pipe 18 pass through the two buffer pads 24 to the outside of the protective box 1, reducing the impact of the vibration of the inlet pipe 12 and the supply pipe 18 on the structure of the protective box 1.

[0021] like Figure 2 , Figure 3 and Figure 4 As shown, the buffer assembly includes a damper 5, a buffer bladder 6, an air inlet pipe 7, an air outlet pipe 8, and a valve 9. A damper 5 is installed between the support plate 4 and the four corners of the protective box 1. The fixed end of the damper 5 is connected to the protective box 1, and the movable end is connected to the support plate 4. The buffer bladder 6 is fixedly connected to the lower part of the protective box 1. The support plate 4 is located above the buffer bladder 6. The left side of the buffer bladder 6 is fixedly connected to the front and rear air inlet pipes 7 and air outlet pipes 8. A valve 9 is installed at the left end of both the air inlet pipe 7 and the air outlet pipe 8.

[0022] like Figure 3 , Figure 4 and Figure 5As shown, it also includes a water level detector 21, a detection rod 22 and a controller 23. The water level detector 21 is bolted to the front of the top of the water supply tank 10. The detection rod 22, which is set at the bottom of the water supply tank 10, extends into the interior of the water supply tank 10 and the bottom end of the detection rod 22 contacts the bottom of the interior of the water supply tank 10. The controller 23 is bolted to the front of the water supply tank 10 and the water pump 11 is electrically connected to the controller 23.

[0023] When using the equipment, first open the front valve 9 to open the air inlet pipe 7, and then fill the buffer bladder 6 with an appropriate amount of gas through the air inlet pipe 7 to ensure that the buffer bladder 6 is in a moderately expanded state and in close contact with the support plate 4 above to form an effective elastic support. After inflation is complete, close the front valve 9 and seal the air inlet pipe 7 to keep the air pressure inside the buffer bladder 6 stable.

[0024] When the equipment is running, the system is first started by an external power supply. The frequency converter 20 controls the operation of the water pump 11, the water pump 24 and the booster pump 17 according to the preset pressure parameters. In the initial state, when the water level in the water supply tank 10 is low, the water level detector 21 monitors the water level change in real time through the detection rod 22. Once the water level is detected to be lower than the set threshold, the controller 23 automatically starts the water pump 11, draws water from an external water source (such as a municipal pipe network or a water storage tank) through the water inlet pipe 12, and delivers the water to the water supply tank 10 through the connecting pipe 13 to replenish the water, ensuring that the water supply tank 10 always maintains a sufficient water volume.

[0025] During normal water supply, pump 14 draws water from water tank 10 through pumping pipe 15 and delivers it to booster pump 17 through connecting pipe 16. Under the control of frequency converter 20, booster pump 17 adjusts its speed according to the actual water demand of the pipe network to achieve constant pressure water output. The water flows through water supply pipe 18 to the user end. Pressure gauges 19 are installed on connecting pipe 13 and connecting pipe 16 to monitor the pressure changes of the upstream and downstream sections in real time and feed the signal back to frequency converter 20 to form a precise closed-loop control, dynamically adjusting the operating frequency of pump 11 and pump 24 to maintain stable water supply pressure.

[0026] During equipment operation, water pump 11, water pump 2 14, booster pump 17 and frequency converter 20 will generate mechanical vibrations. At this time, the buffer assembly set between the protective box 1 and the support plate 4 plays a vibration reduction role: the damper 5 consumes high-frequency vibration energy through piston movement, while the buffer bladder 6 under the support plate 4 undergoes elastic compression and rebound under the action of vibration load, absorbing low-frequency impact vibration. The gas inside achieves energy buffering in a sealed state, further improving the flexibility and adaptability of the buffer response. The damper 5 and the buffer bladder 6 work together to form a multi-stage vibration reduction system, which significantly reduces the transmission of vibration to the equipment and external pipelines, and improves the stability of operation.

[0027] When it is necessary to release the gas inside the buffer bladder 6, the rear valve 9 can be opened to open the vent pipe 8, allowing the gas inside the buffer bladder 6 to be discharged, thus achieving pressure relief and retraction. After the gas is released, the rear valve 9 can be closed and the vent pipe 8 can be resealed to ensure the airtightness of the buffer bladder 6.

Claims

1. A highly stable variable frequency constant pressure water supply device, characterized in that, The system includes a protective box (1), a flap (2), a support plate (4), a buffer assembly, a water supply tank (10), a first water pump (11), an inlet pipe (12), a first connecting pipe (13), a second water pump (14), a pumping pipe (15), a second connecting pipe (16), a booster pump (17), a water supply pipe (18), a pressure gauge (19), and a frequency converter (20). The protective box (1) has two flaps (2) arranged side-by-side at the front. The support plate (4) is slidably located inside the lower part of the protective box (1). The water supply tank (10) is installed on top of the support plate (4). The first water pump (11) is installed on one side of the top of the water supply tank (10), with an inlet pipe (12) fixed to its pumping end. The first connecting pipe (13) is fixed to the outlet end of the first water pump (11) and extends into the water supply tank (10). The second water pump (14) is also installed on top of the support plate (4). (10) is located behind the second water pump (14). The pumping pipe (15) is fixed to the pumping end of the second water pump and connected to the inside of the water supply tank (10). The connecting pipe (16) is fixed to the outlet end of the second water pump (14). Pressure gauges (19) are installed at one end of the first connecting pipe (13) and one end of the second connecting pipe (16). The booster pump (17) is also installed on the top of the support plate (4) and is located to the left of the water supply tank (10). The second (16) is connected to the inlet of the booster pump (17), and the water supply pipe (18) is fixed to the outlet of the booster pump (17). The frequency converter (20) is installed on the top of the support plate (4) and located in front of the water supply tank (10). The first water pump (11), the second water pump (14), the booster pump (17) and the pressure gauge (19) are all electrically connected to the frequency converter (20). The buffer assembly is set between the protective box (1) and the support plate (4).

2. The high-stability variable frequency constant pressure water supply equipment as described in claim 1, characterized in that, The buffer assembly includes a damper (5), a buffer bladder (6), an air inlet pipe (7), an air outlet pipe (8), and a valve (9). A damper (5) is provided between the support plate (4) and multiple corners of the protective box (1). The fixed end of the damper (5) is connected to the protective box (1), and the movable end is connected to the support plate (4). The buffer bladder (6) is fixed inside the lower part of the protective box (1). The support plate (4) is located above the buffer bladder (6). The left side of the buffer bladder (6) is fixed with the front and rear air inlet pipe (7) and the air outlet pipe (8). A valve (9) is provided at one end of both the air inlet pipe (7) and the air outlet pipe (8).

3. The high-stability variable frequency constant pressure water supply equipment as described in claim 2, characterized in that, It also includes a water level detector (21), a detection rod (22) and a controller (23). The water level detector (21) is installed on the other side of the top of the water supply tank (10), and the detection rod (22) installed at its lower part extends into the water supply tank (10). The controller (23) is installed at the front of the water supply tank (10), and the water pump (11) is electrically connected to the controller (23).

4. The high-stability variable frequency constant pressure water supply equipment as described in claim 3, characterized in that, It also includes a pull plate (3), with a pull plate (3) installed on each flap (2).

5. The high-stability variable frequency constant pressure water supply equipment as described in claim 4, characterized in that, It also includes a buffer pad (24). Two vertically distributed buffer pads (24) are fixed to the left side of the protective box (1). The water inlet pipe (12) and the water supply pipe (18) pass through the two buffer pads (24) to the outside of the protective box (1).

6. The high-stability variable frequency constant pressure water supply equipment as described in claim 5, characterized in that, The bottom of the detection rod (22) contacts the bottom of the water supply tank (10).

Images