Variable-frequency constant-pressure water supply pump station integrated device

Abstract

The utility model relates to the technical field of water supply equipment, in particular to a variable-frequency constant-pressure water supply pump station integrated device which comprises a bottom plate, a control cabinet is arranged at the top of the bottom plate, a variable-frequency constant-pressure pipeline system is arranged on one side of the control cabinet, and one side of the variable-frequency constant-pressure pipeline system communicates with a circulating pump body. The other side of the circulating pump body is communicated with a buffer mechanism, one side of the buffer mechanism is communicated with a stainless steel water tank, and the variable-frequency constant-pressure pipeline system is communicated with the stainless steel water tank; water flow pressure fluctuation is effectively absorbed and relieved through a first buffer pipe, a second buffer pipe, a first spring, a second spring and the like, when the water flow pressure output by the circulating pump body changes, the springs can conduct buffering through elastic deformation, the water pressure is kept relatively stable, and the stability and reliability of water supply are guaranteed; the first buffer assembly and the second buffer assembly in the buffer mechanism achieve differential distribution of flow through different structural designs.

Description

Technical Field

[0001] This application relates to the field of water supply equipment technology, and in particular to an integrated device for a variable frequency constant pressure water supply pump station. Background Technology

[0002] Early water supply systems mostly used fixed-frequency pumps for direct water supply. These pumps operated at a fixed speed and could not be flexibly adjusted according to changes in actual water consumption. When water consumption was low, the pumps continued to operate at high power, resulting in significant energy waste. During peak water consumption periods, the limited output power of the pumps could lead to insufficient water pressure, failing to meet users' water needs and disrupting normal residential and industrial operations.

[0003] Furthermore, traditional water supply systems lack effective protection measures for their piping systems. When water flows through the pipes, the starting and stopping of pumps and the opening and closing of valves can easily cause water hammer, leading to a sudden and rapid increase in pressure within the pipes. This not only causes severe impact and damage to the pipes, shortening their lifespan and increasing maintenance costs, but may also pose safety hazards.

[0004] Regarding the aforementioned technologies, the inventors have discovered the following drawbacks: Most existing devices lack effective buffering and pressure stabilization structures. When water consumption changes or pumps start and stop, significant water pressure fluctuations easily occur, resulting in insufficient water pressure during peak hours and excessively high water pressure during off-peak hours. This affects the user experience and may even damage water-using equipment. Many existing water supply devices lack comprehensive protective measures and cannot effectively cope with water hammer phenomena. The water hammer effect generated during pump start-up and shutdown, and valve opening and closing, can easily impact pipes and equipment, shortening equipment lifespan, increasing maintenance costs, and may even lead to safety accidents. Utility Model Content

[0005] In view of the shortcomings of the prior art and in order to solve the problems mentioned in the background art, this application provides an integrated device for variable frequency constant pressure water supply pump station.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an integrated device for a variable frequency constant pressure water supply pump station, including a base plate, a control cabinet on the top of the base plate, a variable frequency constant pressure pipeline system on one side of the control cabinet, a circulating pump body on one side of the variable frequency constant pressure pipeline system, a buffer mechanism on the other side of the circulating pump body, a stainless steel water tank on one side of the buffer mechanism, and the variable frequency constant pressure pipeline system connected to the stainless steel water tank;

[0007] The buffer mechanism comprises a diversion tank shell assembly, a first buffer assembly, and a second buffer assembly, both housed inside the diversion tank shell assembly. The diversion tank shell assembly includes an outlet pipe, a first buffer pipe, a transfer pipe, a second buffer pipe, a double-way pipe, and an inlet pipe. The outlet pipe connects to a stainless steel water tank. One side of the outlet pipe is connected to the first buffer pipe, the bottom of the first buffer pipe is connected to the transfer pipe, and the bottom of the transfer pipe is connected to the second buffer pipe. One side of the first buffer pipe connects to the second buffer pipe via the double-way pipe, and the other side of the second buffer pipe connects to the inlet pipe, which is connected to the circulating pump body. The transfer pipe connects different pipes, changing the direction and path of water flow. The double-way pipe enables the connection and diversion of water flow between different pipes.

[0008] Optionally, the first buffer assembly inside the buffer mechanism includes a first limiting frame, a first buffer sleeve, a second buffer sleeve, a second limiting frame, a third buffer sleeve, a first spring, a pressure plate, a first liquid inlet, and a second liquid inlet. The first limiting frame is fixedly installed inside the adapter pipe. The bottom of the first limiting frame is fixedly connected to the first buffer sleeve. The bottom of the first buffer sleeve is movably sleeved with the second buffer sleeve. The top of the second buffer sleeve is provided with the second limiting frame. The bottom of the second buffer sleeve is movably sleeved with the third buffer sleeve. The bottom of the first buffer sleeve is provided with the first spring. The bottom of the first spring is fixedly connected to the pressure plate. The bottom of the pressure plate is provided with a first liquid inlet. The second liquid inlet is opened on one side of the second buffer tube and communicates with the water inlet pipe.

[0009] Optionally, the second buffer component inside the buffer mechanism includes a pressure relief pipe, a pressure relief groove, a second spring, and a sealing ring. The pressure relief pipe is fixedly installed inside the double-pass pipe. A pressure relief groove is provided on one side of the pressure relief pipe. The outer wall of the pressure relief pipe is fitted with a second spring. A sealing ring is fixedly connected to the bottom of the second spring. The sealing ring is movably fitted onto the outer wall of the pressure relief pipe, and a sealing ring is provided at the connection between the sealing ring and the inner wall of the water inlet pipe.

[0010] Optionally, the length of the pressure relief tube is twice the length of the sealing ring, a sealing plate is provided at the bottom of the pressure relief tube, and a hole is provided at the top of the pressure relief tube.

[0011] Optionally, the flow rate of the first buffer component inside the buffer mechanism is greater than the flow rate of the second buffer component. After the fluid inside the circulating pump body enters the second buffer pipe through the inlet pipe, it enters the interior of the first buffer pipe through the first buffer component and the second buffer component respectively, and then enters the interior of the stainless steel water tank through the outlet pipe.

[0012] Optionally, both the first limiting frame and the first buffer sleeve have holes at their tops, and the pressure plate is movably sleeved inside the transfer pipe.

[0013] In summary, this application includes the following beneficial technical effects:

[0014] 1. In use, this utility model effectively absorbs and mitigates fluctuations in water flow pressure through the first buffer pipe, second buffer pipe, first spring, and second spring. When the water flow pressure output by the circulating pump changes, the springs can buffer the change through elastic deformation, keeping the water pressure relatively stable, ensuring the stability and reliability of the water supply, and meeting the user's water demand. Water flow in pipelines generates impact force, especially during startup, shutdown, or when there are large changes in flow rate, which can easily cause water hammer. This can cause serious damage to the pipeline system and related equipment, such as the circulating pump body and variable frequency constant pressure pipeline systems. The existence of the buffer mechanism can greatly reduce the impact force of the water flow, reduce water hammer damage to equipment, extend the service life of the equipment, and reduce equipment maintenance costs.

[0015] 2. In use, the first and second buffer components inside the buffer mechanism of this utility model achieve differentiated flow distribution through different structural designs. The first buffer component has a larger flow rate, which can quickly handle most of the water flow and ensure basic water supply needs; the second buffer component has a smaller flow rate, which can finely adjust a small portion of the water flow to cope with situations where the flow rate changes little. This optimized flow distribution method enables the water supply system to better adapt to different water use scenarios and improve system operating efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the device in the embodiments of this application;

[0017] Figure 2 This is a schematic diagram of a partial structure of the device in an embodiment of this application;

[0018] Figure 3 This is a schematic diagram of the main structure of the buffer mechanism in the embodiments of this application;

[0019] Figure 4 This is a schematic diagram of the partial structure installation of the buffer mechanism in the embodiments of this application;

[0020] Reference numerals in the attached drawings: 1. Base plate; 2. Control cabinet; 3. Variable frequency constant pressure piping system; 4. Circulating pump body; 5. Buffer mechanism; 501. Water outlet pipe; 502. First buffer pipe; 503. Transfer pipe; 504. Second buffer pipe; 505. Double-pass pipe; 506. Water inlet pipe; 507. First limit frame; 508. First buffer sleeve; 509. Second buffer sleeve; 510. Second limit frame; 511. Third buffer sleeve; 512. First spring; 513. Pressure plate; 514. First liquid inlet; 515. Second liquid inlet; 516. Pressure relief pipe; 517. Pressure relief groove; 518. Second spring; 519. Sealing ring; 6. Stainless steel water tank. Detailed Implementation

[0021] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0022] This application discloses an integrated device for a variable frequency constant pressure water supply pump station.

[0023] Please see Figure 1 An integrated device for a variable frequency constant pressure water supply pump station includes a base plate 1, a control cabinet 2 on the top of the base plate 1, a variable frequency constant pressure pipeline system 3 on one side of the control cabinet 2, a circulating pump body 4 connected to one side of the variable frequency constant pressure pipeline system 3, a buffer mechanism 5 connected to the other side of the circulating pump body 4, a stainless steel water tank 6 connected to one side of the buffer mechanism 5, and the variable frequency constant pressure pipeline system 3 connected to the stainless steel water tank 6.

[0024] Please see Figures 2 to 4 The buffer mechanism 5 consists of a diversion tank shell assembly, a first buffer assembly, and a second buffer assembly. Both the first and second buffer assemblies are located inside the diversion tank shell assembly. The diversion tank shell assembly includes an outlet pipe 501, a first buffer pipe 502, a transfer pipe 503, a second buffer pipe 504, a double-pass pipe 505, and an inlet pipe 506. The outlet pipe 501 is connected to the stainless steel water tank 6. One side of the outlet pipe 501 is connected to the first buffer pipe 502. The bottom of the first buffer pipe 502 is connected to the transfer pipe 503. The bottom of the transfer pipe 503 is connected to the second buffer pipe 504. One side of the first buffer pipe 502 is connected to the second buffer pipe 504 through the double-pass pipe 505. The other side of the second buffer pipe 504 is connected to the inlet pipe 506. The inlet pipe 506 is connected to the circulating pump body 4.

[0025] The first buffer assembly inside the buffer mechanism 5 includes a first limiting frame 507, a first buffer sleeve 508, a second buffer sleeve 509, a second limiting frame 510, a third buffer sleeve 511, a first spring 512, a pressure plate 513, a first liquid inlet 514, and a second liquid inlet 515. The first limiting frame 507 is fixedly installed inside the adapter pipe 503. The bottom of the first limiting frame 507 is fixedly connected to the first buffer sleeve 508, and the bottom of the first buffer sleeve 508 is movably sleeved with a second buffer sleeve 515. The second buffer sleeve 509 is equipped with a second limiting bracket 510 at its top and a third buffer sleeve 511 movably connected to its bottom. The first buffer sleeve 508 is equipped with a first spring 512 at its bottom and a pressure plate 513 is fixedly connected to the bottom of the first spring 512. The bottom of the pressure plate 513 is provided with a first liquid inlet hole 514 and a second liquid inlet hole 515 is opened on one side of the second buffer tube 504 and is connected to the water inlet pipe 506.

[0026] The second buffer assembly inside the buffer mechanism 5 includes a pressure relief pipe 516, a pressure relief groove 517, a second spring 518, and a sealing ring 519. The pressure relief pipe 516 is fixedly installed inside the double-pass pipe 505. A pressure relief groove 517 is provided on one side of the pressure relief pipe 516. The second spring 518 is sleeved on the outer wall of the pressure relief pipe 516. A sealing ring 519 is fixedly connected to the bottom of the second spring 518. The sealing ring 519 is movably sleeved on the outer wall of the pressure relief pipe 516, and a sealing ring is provided at the connection between the sealing ring 519 and the inner wall of the water inlet pipe 506.

[0027] The length of the pressure relief tube 516 is twice the length of the sealing ring 519. A sealing plate is provided at the bottom of the pressure relief tube 516, and a hole is provided at the top of the pressure relief tube 516.

[0028] The flow rate of the first buffer component inside the buffer mechanism 5 is greater than that of the second buffer component. After the fluid inside the circulating pump body 4 enters the second buffer pipe 504 through the inlet pipe 506, it enters the interior of the first buffer pipe 502 through the first buffer component and the second buffer component respectively, and enters the interior of the stainless steel water tank 6 through the outlet pipe 501.

[0029] Both the top of the first limiting frame 507 and the first buffer sleeve 508 are provided with holes, and the pressure plate 513 is movably sleeved inside the transfer pipe 503.

[0030] Further explanation is needed:

[0031] The buffer mechanism 5 can effectively buffer the water flow pressure. The water flow pressure output by the circulating pump body 4 is not constant. During startup, shutdown, or operation, large pressure fluctuations may occur. The first buffer pipe 502 and the second buffer pipe 504 in the buffer mechanism 5 can play a preliminary buffering role on the water flow, reducing the direct impact force of the water flow. At the same time, elastic elements such as the first spring 512 and the second spring 518 will undergo elastic deformation when the pressure changes, absorbing the energy of the pressure fluctuation. When the pressure rises, the spring is compressed and stores energy; when the pressure drops, the spring rebounds and releases energy, thereby maintaining the relative stability of the water pressure and avoiding damage to the water supply system due to sudden pressure changes.

[0032] The buffer mechanism 5 helps stabilize the flow rate. The water demand of the water supply system may change at any time, which requires the system to be able to flexibly adjust the flow rate. The first and second buffer components inside the buffer mechanism 5 achieve optimized distribution of the flow rate by means of different structures and working methods. Due to its large flow rate design, the first buffer component can quickly handle most of the water flow and meet the demand during peak water demand. The second buffer component, on the other hand, makes fine adjustments to a small portion of the water flow and plays a role during low water demand or when the flow rate changes little, ensuring a smooth transition of the water supply flow rate and adapting to different water demand scenarios.

[0033] The buffer mechanism 5 also protects the equipment in the water supply system. During the high-speed flow of water, the impact force and water hammer effect generated can cause serious wear and damage to equipment such as the circulating pump body 4 and the variable frequency constant pressure pipeline system 3, shortening the service life of the equipment. The buffer mechanism 5 greatly reduces the impact force of the water flow on the equipment by buffering pressure and stabilizing flow, reducing the risk of damage to the equipment caused by uneven force and sudden pressure changes, thereby extending the service life of the equipment, reducing the cost of equipment maintenance and replacement, and ensuring the stable operation of the entire water supply system.

[0034] The working principle of the above embodiments is as follows:

[0035] First, the base plate 1 serves as the foundation support for the entire device, ensuring the stable installation of other components. The control cabinet 2 is activated, providing control commands for the entire variable frequency constant pressure water supply pump station integrated device. It regulates the system based on the preset pressure value and the actual detected water pressure data.

[0036] Secondly, the variable frequency constant pressure pipeline system 3 starts to work. This system uses variable frequency technology to automatically adjust the speed of the water pump according to the instructions issued by the control cabinet 2, thereby adjusting the water pressure in the pipeline. When the water consumption increases, the control cabinet 2 controls the water pump speed to increase the water pressure in the pipeline and ensure sufficient water supply; when the water consumption decreases, the water pump speed decreases to maintain stable water pressure and achieve energy-saving operation.

[0037] Next, the circulating pump body 4 operates under the control of the variable frequency constant pressure pipeline system 3. As a power source, it draws water from the stainless steel water tank 6 or other water sources and presses it into the buffer mechanism 5 through the inlet pipe 506. At this time, the water flow rate and pressure are relatively high, which may cause impact on subsequent equipment and pipelines.

[0038] Next, the buffer mechanism 5 comes into play. After the water flowing out of the circulating pump body 4 enters the buffer mechanism 5, it is first initially diverted by the diversion tank shell assembly. The first buffer pipe 502 and the second buffer pipe 504 initially buffer the water flow to reduce the impact force of the water flow. Then, the water flow enters the first buffer assembly and the second buffer assembly. In the first buffer assembly, the first spring 512, the first buffer sleeve 508, etc. work together to further absorb the water flow energy and buffer pressure fluctuations. In the second buffer assembly, the pressure relief pipe 516, the second spring 518, etc., release part of the pressure through the pressure relief groove 517 when the water pressure is too high, ensuring the buffering effect. After buffering, the pressure and flow rate of the water flow tend to be stable.

[0039] Finally, a stable water flow enters the stainless steel water tank 6 through the outlet pipe 501, or is directly delivered to the user. The stainless steel water tank 6 serves to store and regulate the water volume. When the water supply exceeds the water consumption, the excess water is stored in the water tank; when the water supply is less than the water consumption, the water in the water tank is used to supplement the water supply, ensuring the stable operation of the entire water supply system.

[0040] 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 integrated device for a variable frequency constant pressure water supply pump station, comprising a base plate (1), characterized in that: A control cabinet (2) is provided on the top of the base plate (1). A variable frequency constant pressure pipeline system (3) is provided on one side of the control cabinet (2). A circulating pump body (4) is connected to one side of the variable frequency constant pressure pipeline system (3). A buffer mechanism (5) is connected to the other side of the circulating pump body (4). A stainless steel water tank (6) is connected to one side of the buffer mechanism (5). The variable frequency constant pressure pipeline system (3) is connected to the stainless steel water tank (6). A buffer mechanism (5) is provided, comprising a diversion tank shell assembly, a first buffer assembly, and a second buffer assembly. Both the first and second buffer assemblies are located inside the diversion tank shell assembly. The diversion tank shell assembly includes an outlet pipe (501), a first buffer pipe (502), a transfer pipe (503), a second buffer pipe (504), a double-pass pipe (505), and an inlet pipe (506). The outlet pipe (501) is connected to a stainless steel water tank (6). A first buffer pipe (502) is connected to one side of the water pipe (501), and a transfer pipe (503) is connected to the bottom of the first buffer pipe (502). A second buffer pipe (504) is connected to the bottom of the transfer pipe (503). One side of the first buffer pipe (502) is connected to the second buffer pipe (504) through a double-pass pipe (505). The other side of the second buffer pipe (504) is connected to an inlet pipe (506), and the inlet pipe (506) is connected to the circulating pump body (4).

2. The integrated device for a variable frequency constant pressure water supply pump station according to claim 1, characterized in that: The first buffer assembly inside the buffer mechanism (5) includes a first limiting frame (507), a first buffer sleeve (508), a second buffer sleeve (509), a second limiting frame (510), a third buffer sleeve (511), a first spring (512), a pressure plate (513), a first liquid inlet (514), and a second liquid inlet (515). The first limiting frame (507) is fixedly installed inside the adapter pipe (503). The bottom of the first limiting frame (507) is fixedly connected to the first buffer sleeve (508), and the bottom of the first buffer sleeve (508) is movably sleeved with the second buffer sleeve. (509) A second limiting frame (510) is provided at the top of the second buffer sleeve (509), and a third buffer sleeve (511) is movably sleeved at the bottom of the second buffer sleeve (509). A first spring (512) is provided at the bottom of the first buffer sleeve (508), and a pressure plate (513) is fixedly connected to the bottom of the first spring (512). A first liquid inlet hole (514) is provided at the bottom of each pressure plate (513), and a second liquid inlet hole (515) is opened on one side of the second buffer tube (504). The second liquid inlet hole (515) is connected to the water inlet pipe (506).

3. The integrated device for variable frequency constant pressure water supply pumping station according to claim 1, characterized in that: The second buffer component inside the buffer mechanism (5) includes a pressure relief pipe (516), a pressure relief groove (517), a second spring (518), and a sealing ring (519). The pressure relief pipe (516) is fixedly installed inside the double-pass pipe (505). A pressure relief groove (517) is provided on one side of the pressure relief pipe (516). The outer wall of the pressure relief pipe (516) is fitted with a second spring (518). The bottom of the second spring (518) is fixedly connected to a sealing ring (519). The sealing ring (519) is movably fitted on the outer wall of the pressure relief pipe (516), and a sealing ring is provided at the connection between the sealing ring (519) and the inner wall of the water inlet pipe (506).

4. The integrated device for a variable frequency constant pressure water supply pump station according to claim 3, characterized in that: The length of the pressure relief tube (516) is twice the length of the sealing ring (519), a sealing plate is provided at the bottom of the pressure relief tube (516), and a hole is provided at the top of the pressure relief tube (516).

5. The integrated device for a variable frequency constant pressure water supply pump station according to claim 1, characterized in that: The flow rate of the first buffer component inside the buffer mechanism (5) is greater than that of the second buffer component. After the fluid inside the circulating pump body (4) enters the second buffer pipe (504) through the inlet pipe (506), it enters the interior of the first buffer pipe (502) through the first buffer component and the second buffer component respectively, and enters the interior of the stainless steel water tank (6) through the outlet pipe (501).

6. The integrated device for a variable frequency constant pressure water supply pump station according to claim 2, characterized in that: The top of the first limiting frame (507) and the first buffer sleeve (508) are both provided with holes, and the pressure plate (513) is movably sleeved inside the transfer pipe (503).

Images