Annular shunt momentum exchanger

Abstract

The invention discloses an annular flow-dividing momentum exchanger which comprises a partition jet flow chamber, an annular flow-dividing momentum exchange chamber, a reducing pipe connecting nozzle, a flow-guiding transition nozzle and a boosting diverging pipe, one end of the reducing pipe connecting nozzle is arranged in the partition jet flow chamber, and the other end of the reducing pipe connecting nozzle is arranged outside the partition jet flow chamber and serves as a water inlet. One end of the diversion transition nozzle is arranged in the partition jet flow chamber, the other end of the diversion transition nozzle is arranged in the annular diversion momentum exchange chamber and forms an annular diversion port with a gap at one end of the boosting diverging pipe, and the other end of the boosting diverging pipe is arranged outside the annular diversion momentum exchange chamber to serve as a water outlet. The annular flow-dividing momentum exchanger is provided with a partition jet chamber and an independent momentum exchange chamber, the annular flow-dividing port is used for dividing flow, the centrifugal force during flow dividing is used for continuously acting the pressure on the water body in the middle of a water column, most momentum is transmitted, the output pressure reaches 0.9-1.5 times of the pipe network pressure, the pipe network residual pressure is effectively utilized, and the energy consumption is reduced. And the energy-saving effect is obviously improved.

Description

Technical Field

[0001] This invention relates to the field of secondary water supply equipment for high-rise buildings, specifically to a ring-shaped flow exchanger that utilizes residual pressure in the municipal pipeline network to achieve pressure boosting. Background Technology

[0002] In secondary water supply systems for high-rise buildings, traditional solutions require the installation of a water storage tank to isolate the water pump from the municipal water supply network and regulate water flow. However, the municipal water supply network has high pressure, limiting the actual effectiveness of the water storage tank's regulatory function.

[0003] In the existing technology, the "Pipeline Residual Pressure Jet Combined Variable Frequency Speed ​​Regulation Pressurized Water Supply Device" can effectively utilize the residual pressure of the pipeline network during the off-peak water usage period through the jet pump structure. However, during the peak water usage period, the water outlet of the water storage tank will mix with the pipeline network water flow in the throat of the jet pump, resulting in a sharp drop in the output pressure of the jet pump and extremely low utilization rate of the pipeline network residual pressure.

[0004] The patent with authorization announcement number [CN221095284U] discloses a secondary water supply device for high-rise buildings that utilizes a pressure energy conversion diverter. However, it still has significant drawbacks: the outer diversion part of the jet water column rebounds and diverts after colliding with the guide pipe, and the kinetic energy of the diverted water is not fully utilized; at the same time, the diverted water with disordered momentum collides and rubs with the mainstream water, causing a large amount of energy loss. The equipment generates strong vibration and noise during operation, and the final output pressure is only 0.9 to 1.1 times the pressure of the municipal pipe network, so the residual pressure utilization efficiency is still not ideal. Summary of the Invention

[0005] To address the shortcomings of existing technologies, the present invention aims to provide a ring-shaped flow exchanger that solves the problems of low residual pressure utilization, high energy loss, and strong vibration and noise in traditional secondary water supply devices, thereby achieving efficient recovery and utilization of residual pressure in municipal pipe networks.

[0006] The technical solution of the present invention is implemented as follows: an annular flow splitting exchanger includes a jet isolation chamber (2), an annular flow splitting exchange chamber (4), a converging tube connected to a nozzle (1), a flow guide transition nozzle (3), and a pressure boosting diffuser (5). The central axes of the converging tube connected to the nozzle (1), the flow guide transition nozzle (3), and the pressure boosting diffuser (5) coincide. One end of the converging tube connected to the nozzle (1) is located inside the jet isolation chamber (2), and the other end of the converging tube connected to the nozzle (1) extends outside the jet isolation chamber (2) as an inlet. The flow guide transition nozzle (4) 3) One end is located in the isolation jet chamber (2), and the other end of the flow guide transition nozzle (3) extends into the annular flow distribution chamber (4). The outlet end of the flow guide transition nozzle (3) and the inlet end of the pressure boosting diffuser (5) are spaced apart to form an annular flow distribution port (6). The other end of the pressure boosting diffuser (5) extends outside the annular flow distribution chamber (4) as an outlet. The flow guide transition nozzle (3) is a tapered-expanding short pipe structure. A transfer water pipe (9) is connected between the isolation jet chamber (2) and the annular flow distribution chamber (4).

[0007] Furthermore, an annular inclined diversion channel (7) is connected to the annular diversion port (6), and the angle between the extended plane of the annular inclined diversion channel (7) and the central axis of the annular diversion flow exchanger is 30°~90°.

[0008] Furthermore, an annular inner arc surface diversion channel (8) is connected to the annular diversion port (6), and the angle between the tangent at the arc surface connection of the annular inner arc surface diversion channel (8) and the central axis of the annular diversion flow exchanger is 30°~90°.

[0009] Furthermore, the taper of the converging nozzle (1) is 9°.

[0010] Furthermore, the tapered section of the guide transition nozzle (3) has a taper of 10° and the tapered section has a taper of 9°.

[0011] Furthermore, the width of the annular diversion port (6) is 2mm~8mm.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This invention sets up a partitioned jet chamber and an independent annular diversion momentum exchange chamber. The main water body is guided by the gradually narrowing-expanding structure of the guide transition nozzle. At the same time, an annular diversion port is used to form an annular diversion. Centrifugal force is generated when exiting the annular diversion port, which applies radial pressure to the main water body, realizing efficient momentum transfer. The final output pressure can reach up to 1.5 times the original pressure of the municipal pipe network, which greatly improves the utilization rate of residual pressure.

[0013] 2. The design of the annular inclined diversion channel or the annular inner arc surface diversion channel, compared with the traditional flat-mouth diversion structure, can enhance the inertial guidance of the diverted water body, making the centrifugal effect more concentrated and significant, avoiding energy loss caused by disordered collisions, and further improving the stability and reliability of the device operation.

[0014] 3. The overall structure is compact, requiring no additional power input. Pressure is increased only through fluid momentum exchange, resulting in significant energy savings and effectively reducing the operating energy consumption of the secondary water supply system. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the basic structure of the annular flow-sharing exchanger of the present invention; Figure 2 This is a schematic diagram of the structure of the annular inclined flow channel of the present invention; Figure 3 This is a schematic diagram of the flow channel with an annular inner arc surface of the present invention; In the diagram: 1-Converging tube connected to nozzle; 2-Isolation jet chamber; 3-Guiding transition nozzle; 4-Annular flow exchange chamber; 5-Pressure-boosting diffuser; 6-Annular flow divider; 7-Annular inclined flow divider; 8-Annular inner arc flow divider; 9-Transfer water pipe. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example

[0018] like Figure 1As shown, an annular flow-splitting exchanger includes a jet-blocking chamber 2, an annular flow-splitting exchange chamber 4, a converging tube connected to a nozzle 1, a flow-guiding transition nozzle 3, and a pressure-boosting diffuser 5. The central axes of the converging tube connected to the nozzle 1, the flow-guiding transition nozzle 3, and the pressure-boosting diffuser 5 coincide. One end of the converging tube connected to the nozzle 1 is located inside the jet-blocking chamber 2, and the other end of the converging tube connected to the nozzle 1 extends outside the jet-blocking chamber 2 as an inlet. One end of the flow-guiding transition nozzle 3 is located inside the jet-blocking chamber 2. Inside the jet interruption chamber 2, the other end of the flow guide transition nozzle 3 extends into the annular flow splitting exchange chamber 4, and the water outlet of the flow guide transition nozzle 3 and the water inlet of the pressure boosting diffuser 5 are spaced apart to form an annular flow splitting port 6. The other end of the pressure boosting diffuser 5 extends outside the annular flow splitting exchange chamber 4 as a water outlet. The flow guide transition nozzle 3 is a short pipe structure that gradually narrows and expands. A transfer water pipe 9 connects the jet interruption chamber 2 and the annular flow splitting exchange chamber 4.

[0019] In this embodiment, the taper of the converging nozzle 1 is 9°, the taper of the converging section of the guide transition nozzle 3 is 10°, the taper of the expanding section is 9°, and the width of the annular diverter 6 is 4mm. Example

[0020] like Figure 2 As shown, the difference between this embodiment and embodiment 1 is that an annular inclined diversion channel 7 is connected to the annular diversion port 6, and the angle between the extension plane of the annular inclined diversion channel 7 and the central axis of the annular diversion flow exchanger is 60°. Example

[0021] like Figure 3 As shown, the difference between this embodiment and Embodiment 1 is that an annular inner arc surface diversion channel 8 is connected to the annular diversion port 6, and the angle between the tangent at the arc surface connection of the annular inner arc surface diversion channel 8 and the central axis of the annular diversion flow exchanger is 60°.

[0022] Application Cases Taking a 12-story residential community in a mountain city as the application example, the community has 900 households with a daily water consumption of 480 cubic meters / day and an average municipal pipeline pressure of 0.26MPa.

[0023] A secondary water supply system is constructed using the annular flow divider exchanger of this invention. The main body of the equipment is made of 304 stainless steel. The large end diameter of the converging pipe connecting nozzle 1 is 100mm, and the nozzle flow rate is designed to be 1.2 times the daily average flow rate, i.e., 24 cubic meters / hour. Ignoring the head loss of the converging pipe, the calculated nozzle diameter is 20mm and the nozzle length is 25mm. The small end diameter of the converging section of the guide transition nozzle 3 is 18mm and the length is 10mm, while the large end diameter of the expanding section is 26mm and the length is 50mm. The small end diameter of the boosting expanding pipe 5 is 27mm, the large end diameter is 100mm, and the taper is 9°. The diameters of the isolation jet chamber 2 and the annular flow divider exchange chamber 4 are both 150mm. The transfer water pipe 9 has a diameter of 65mm, is laid vertically downwards for a length greater than 80cm, and then connects to the water level valve of the storage tank.

[0024] The system is equipped with a low-peak water supply pump and a high-peak water supply pump. The low-peak water supply pump draws water from the outlet of the momentum exchanger of this invention, with a flow rate of 20 cubic meters per hour and a head of 40 meters; the high-peak water supply pump draws water from the reservoir, with a flow rate of 60 cubic meters per hour and a head of 60 meters.

[0025] Operational data shows that during off-peak water supply, the system output pressure can reach 0.39 MPa (1.5 times the pressure of the municipal water supply network); during peak water supply, the system output pressure can reach 0.234 MPa; compared with traditional secondary water supply solutions, the system saves at least 45% on electricity costs.

[0026] It is important to note that when the height difference between the municipal water inlet pipe and the highest water level in the reservoir is less than 80cm, level valves should be installed on the transfer pipes 9 of the isolation jet chamber 2 and the annular diversion flow exchange chamber 4 respectively. If the reservoir's regulating volume allows or the water level is controllable, the transfer pipes 9 can be directly connected to the reservoir to reduce the probability of the diverted water from the annular diversion flow exchange chamber 4 flowing back to the isolation jet chamber 2. Simultaneously, an automatic air inlet valve should be installed at the municipal pipe network inlet, and an automatic air vent valve should be installed at the highest point of the pipeline between the outlet of the booster diffuser 5 and the suction port of the low-peak water supply pump.

[0027] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the invention by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the invention should be included within the scope of protection of the invention.

Claims

1. A ring-shaped flow-sharing exchanger, characterized in that, It includes a jet isolation chamber (2), an annular flow exchange chamber (4), a converging nozzle (1), a flow guide nozzle (3), and a booster diffuser (5). The central axes of the converging nozzle (1), the flow guide nozzle (3), and the booster diffuser (5) coincide. One end of the converging nozzle (1) is located inside the jet isolation chamber (2), and the other end of the converging nozzle (1) extends outside the jet isolation chamber (2) as an inlet. One end of the flow guide nozzle (3) is located inside the jet isolation chamber (2). Inside the flow guide transition nozzle (3), the other end of the flow guide transition nozzle (3) extends into the annular flow distribution chamber (4), and the outlet end of the flow guide transition nozzle (3) and the inlet end of the pressure boosting diffuser (5) are spaced apart to form an annular flow distribution port (6). The other end of the pressure boosting diffuser (5) extends outside the annular flow distribution chamber (4) as an outlet. The flow guide transition nozzle (3) is a gradually narrowing and gradually expanding short pipe structure. A transfer water pipe (9) is connected between the isolation jet chamber (2) and the annular flow distribution chamber (4).

2. The annular flow-sharing exchanger according to claim 1, characterized in that, The annular diversion port (6) is connected to an annular inclined diversion channel (7), and the angle between the extended plane of the annular inclined diversion channel (7) and the central axis of the annular diversion flow exchanger is 30°~90°.

3. The annular flow-sharing exchanger according to claim 1, characterized in that, The annular diversion port (6) is connected to an annular inner arc surface diversion channel (8), and the angle between the tangent at the arc surface connection of the annular inner arc surface diversion channel (8) and the central axis of the annular diversion flow exchanger is 30°~90°.

4. The annular flow-sharing exchanger according to claim 1, characterized in that, The taper of the converging tube connected to the nozzle (1) is 9°.

5. The annular flow-sharing exchanger according to claim 1, characterized in that, The tapered section of the guide transition nozzle (3) has a taper of 10° and the tapered section has a taper of 9°.

6. The annular flow-sharing exchanger according to claim 1, characterized in that, The width of the annular diversion port (6) is 2mm to 8mm.

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