A centrifugal water pump rear-end pressure boosting tank

Abstract

The utility model relates to water pump equipment field, concretely discloses a centrifugal water pump rear end booster tank, include: tank body, the both ends of tank body are provided with first flange and second flange, are provided with primary pressure chamber in tank body, the outside ring of primary pressure chamber is provided with secondary pressure chamber, primary pressure chamber can carry out the water flow of centrifugal water pump export place pressure boost through the reducing structure, the side portion and top portion of secondary pressure chamber are provided with first water inlet and first water outlet respectively, first water inlet can introduce the secondary turbulence that generates at the sidewall of primary pressure chamber pressure boost to the inside of secondary pressure chamber and carry out reduction and pressure boost, finally, the steady high pressure water flow is sprayed from first water outlet, thereby can reduce overall energy loss, reduce turbulence and further improve water pressure.

Description

Technical Field

[0001] This utility model belongs to the field of water pump equipment, and specifically relates to a booster tank at the rear end of a centrifugal water pump. Background Technology

[0002] Centrifugal pumps are a widely used type of pumping equipment. When water is ejected from the impeller of a centrifugal pump, it is in a turbulent flow state, and the impact of the water flow on the pipe wall also generates secondary turbulence. The turbulence flows in multiple directions at different angles, and the additional shear stress generated by the turbulence significantly increases energy loss and resistance.

[0003] Existing methods for increasing water flow energy typically involve installing a booster pipe at the rear end of a centrifugal pump for pressurization. This booster pipe is usually a narrow-diameter structure. However, even after pressurization, the water flow still generates secondary turbulence, resulting in significant resistance and energy loss, which reduces energy efficiency.

[0004] Patent document with application number "CN2013205802828" discloses a booster pipe comprising an inflow section, an amplification section, and an outflow section; the inflow section, amplification section, and outflow section are connected in sequence, and the internal flow channels of the inflow section, amplification section, and outflow section are interconnected; the diameter of the amplification section is larger than the diameter of the inflow section; the diameter of the outflow section gradually decreases, and the outlet of the outflow section is smaller than the inlet of the inflow section; although the booster pipe in this prior art can play a certain role in eliminating turbulence in the amplification section and can also boost the water flow through the outflow section, it still generates a large amount of secondary turbulence after boosting and has no structure to eliminate secondary turbulence, so there is still a problem of large energy loss.

[0005] The above background information is provided only to assist in understanding the utility model concept and technical solution of this utility model, and it does not necessarily belong to the prior art of this patent application. In the absence of clear evidence that the above information was disclosed on the filing date of this patent application, the above background information should not be used to evaluate the novelty and inventiveness of this application. Utility Model Content

[0006] The purpose of this utility model is to provide a booster tank at the rear end of a centrifugal water pump, thereby overcoming the defects of water flow having difficulty eliminating turbulence and large energy loss after being boosted by a centrifugal water pump.

[0007] To achieve the above objectives, this utility model provides a centrifugal water pump rear booster tank, including a tank body. A first flange and a second flange are respectively provided at both ends of the tank body. A primary booster chamber and a secondary booster chamber are provided inside the tank body. A main inlet and a main outlet are respectively provided at both ends of the primary booster chamber. The diameter of the main inlet is larger than the diameter of the main outlet. The secondary booster chamber is arranged around the outer periphery of the primary booster chamber. A first inlet is provided on the side of the primary booster chamber, connecting the secondary booster chamber to the primary booster chamber. A first outlet is provided at the top of the secondary booster chamber. The first flange surrounds the main outlet and the first outlet, and the second flange surrounds the main inlet.

[0008] Preferably, in the above technical solution, the secondary pressurization chamber is provided with a vortex pressurization chamber and a guide chamber, the guide chamber being located between the vortex pressurization chamber and the primary pressurization chamber; the first outlet is located at the top of the guide chamber, the first inlet is connected to one side of the guide chamber, and the other side of the guide chamber is provided with a second inlet and a second outlet connected to one side of the vortex pressurization chamber, the second outlet being located above the second inlet, and the positions of the first inlet and the second inlet being directly opposite each other.

[0009] Preferably, in the above technical solution, there are two or more second water inlets, each of which is arranged in a ring around the side wall of the guide cavity; there are two or more second water outlets, each of which is arranged in a ring around the side wall of the guide cavity.

[0010] Preferably, in the above technical solution, the other side of the vortex booster chamber is provided with an arc surface, and the second water inlet and the second water outlet are respectively close to the two ends of the arc surface.

[0011] Preferably, in the above technical solution, the sidewall of the primary booster chamber includes a conical section and a cylindrical section. One end of the conical section is connected to the main water inlet, and one end of the cylindrical section is connected to the main water outlet. The first water inlet is located between the other end of the conical section and the other end of the cylindrical section.

[0012] Preferably, in the above technical solution, the first inlet is an annular structure, which can separate the conical part and the cylindrical part from each other.

[0013] Preferably, in the above technical solution, the tank body is composed of a pipe body, an outer enclosure, a straight sleeve, and a conical sleeve; the first flange and the second flange are respectively disposed at the upper and lower ends of the pipe body; the outer enclosure is welded to the side of the pipe body and forms the vortex pressurization cavity with the outer wall of the pipe body; the second inlet and the second outlet are opened on the side of the pipe body; the straight sleeve and the conical sleeve are fitted inside the pipe body; the outer side of the straight sleeve and the inner side of the pipe body form the flow guiding cavity; one end of the straight sleeve faces the upper end of the pipe body and is provided with an outwardly extending first baffle on its side; the first outlet is opened on the first baffle; the cylindrical part is disposed on the inner side of the straight sleeve; one end of the conical sleeve faces the lower end of the pipe body; the diameter of the other end of the conical sleeve gradually decreases and is aligned with the other end of the straight sleeve; the conical part is disposed on the inner side of the conical sleeve; the gap between the other end of the conical sleeve and the other end of the straight sleeve constitutes the first outlet.

[0014] Preferably, in the above technical solution, the edge of the first baffle is welded to the upper end of the tube body, and one end of the conical sleeve is welded to the lower end of the tube body.

[0015] Preferably, in the above technical solution, a second baffle extending outward is provided on the side of one end of the conical sleeve, and the first baffle and the second baffle abut against the end faces of the upper and lower ends of the tube body, respectively.

[0016] Preferably, in the above technical solution, the end face of the first flange is provided with an inwardly recessed first limiting groove, and the end face of the second flange is provided with an inwardly recessed second limiting groove. The first baffle can be locked in the first limiting groove, and the second baffle can be locked in the second limiting groove.

[0017] Compared with existing technologies, this utility model has the following beneficial effects:

[0018] 1. The centrifugal water pump rear booster tank of this utility model can boost the water flow at the outlet of the centrifugal water pump through a primary booster chamber with a diameter contraction structure. A secondary booster chamber is also arranged around the outer periphery of the primary booster chamber. The first inlet connects the side of the primary booster chamber and the side of the secondary booster chamber, thereby introducing the secondary turbulence generated on the side wall after the primary booster chamber is pressurized into the secondary booster chamber for reduction and pressurization. Finally, the stable high-pressure water flow is sprayed out from the first outlet, thereby reducing overall energy loss, reducing turbulence and further increasing water pressure.

[0019] 2. The secondary pressurization chamber of this utility model is not only equipped with a vortex pressurization chamber but also with a flow guiding chamber. The straight structure of the flow guiding chamber can facilitate the merging, rectification, and guidance of the pressurized water flow in the vortex chamber and part of the water flow pressed into the primary pressurization chamber, thereby making the water flow from the first outlet more stable.

[0020] 3. The first water inlet in this utility model is configured as an annular opening structure, which allows all turbulence generated in the inner sidewall of the first-stage pressurization chamber in a 360-degree direction, thus improving the turbulence elimination effect.

[0021] 4. The tank in this utility model is composed of a pipe body, an outer chamber, a straight sleeve and a conical sleeve. By fitting the straight sleeve and the conical sleeve into the pipe body, key structures such as the primary pressurization chamber, the flow guiding chamber and the first water inlet are directly formed. This makes the manufacturing process easier and simplifies the overall structure, reducing manufacturing and maintenance costs.

[0022] 5. The straight sleeve and tapered sleeve in this utility model can not only be connected to the pipe body by welding, but also can be directly connected to the centrifugal pump and water pipeline by assembling the first flange and the second flange, thereby shortening the processing cycle and reducing the processing difficulty. Attached Figure Description

[0023] Figure 1 This is a partial sectional view of the booster tank at the rear end of the centrifugal water pump of this utility model.

[0024] Figure 2 This is a schematic diagram showing the straight sleeve and tapered sleeve installed with the pipe body in a second embodiment.

[0025] Figure 3 This is a schematic diagram showing the straight sleeve and tapered sleeve installed with the pipe body in a third embodiment.

[0026] Explanation of key figure labels:

[0027] 100-Tank body, 110-First flange, 111-First limiting groove, 120-Second flange, 121-Second limiting groove, 130-First stage pressurization chamber, 131-Main inlet, 132-Main outlet, 140-Second stage pressurization chamber, 141-First inlet, 142-First outlet, 143-Vortex pressurization chamber, 144-Guiding chamber, 145-Second inlet, 146-Second outlet, 147-Arc surface;

[0028] 200-tube body;

[0029] 300 - Outsourced cabin;

[0030] 400 - Straight sleeve, 410 - Cylindrical part, 420 - First baffle, 430 - First through hole;

[0031] 500 - tapered sleeve, 510 - tapered part, 520 - second baffle, 530 - second through hole. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] In the description of this utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "top surface", "bottom surface", "inner", "outer", "inner side", "outer side", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0034] In the description of this invention, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. Where the terms "first," "second," and "third" are used for descriptive purposes and to distinguish technical features, they should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the sequential relationship of the indicated technical features.

[0035] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. The embodiments of this utility model will now be described based on its overall structure.

[0036] like Figures 1 to 3As shown, the centrifugal water pump rear booster tank in this embodiment includes: tank body 100, first flange 110, first limiting groove 111, second flange 120, second limiting groove 121, primary booster chamber 130, main inlet 131, main outlet 132, secondary booster chamber 140, first inlet 141, first outlet 142, vortex booster chamber 143, guide chamber 144, second inlet 145, second outlet 146, arc surface 147, pipe body 200, outer enclosure 300, straight sleeve 400, cylindrical section 410, first baffle 420, first through hole 430, conical sleeve 500, conical section 510, second baffle 520, and second through hole 530.

[0037] The tank body 100 is equipped with a primary pressurization chamber 130 and a secondary pressurization chamber 140. The primary pressurization chamber 130 has a main inlet 131 and a main outlet 132 at its two ends, respectively. The diameter of the main inlet 131 is larger than the diameter of the main outlet 132. The secondary pressurization chamber 140 is arranged around the outer periphery of the primary pressurization chamber 130. A first inlet 141 is opened on the side of the primary pressurization chamber 130, connecting the secondary pressurization chamber 140 to the primary pressurization chamber 130. A first outlet 142 is provided at the top of the secondary pressurization chamber 140. There are two or more outlets, with each first outlet 142 evenly distributed in a circle around the main outlet 132. A first flange 110 surrounds the main outlet 132 and the first outlets 142, and a second flange 120 surrounds the main inlet 131. The secondary pressurization chamber 140 is equipped with a vortex pressurization chamber 143 and a guide chamber 144. The guide chamber 144 is located between the vortex pressurization chamber 143 and the primary pressurization chamber and surrounds the primary pressurization chamber 130. The first outlet 142 is located at the top of the guide chamber 144, and the first inlet 141 is located at the top of the guide chamber 144. One side of the flow guiding cavity 144 is open, and the other side of the flow guiding cavity 144 is provided with a second inlet 145 and a second outlet 146 that are connected to one side of the vortex boosting cavity 143. The second outlet 146 is located above the second inlet 145. The positions of the first inlet 141 and the second inlet 145 are opposite each other. There are two or more second inlets 145, and each second inlet 145 is arranged in a ring around the side wall of the flow guiding cavity 144. There are two or more second outlets 146, and each second outlet 146 is arranged in a ring around the side wall of the flow guiding cavity 144. In the vortex boosting cavity 143... On the other side, there is an arc surface 147, with both ends of the arc surface 147 forming a spherical structure. The second inlet 145 and the second outlet 146 are respectively close to the two ends of the arc surface 147. The side wall of the first-stage booster chamber 130 includes a conical section 510 and a cylindrical section 410. One end of the conical section 510 is connected to the main inlet 131, and one end of the cylindrical section 410 is connected to the main outlet 132. The first inlet 141 is an annular structure and is located between the other end of the conical section 510 and the other end of the cylindrical section 410 so as to separate the cylindrical section 410 and the conical section 510 from each other.

[0038] More specifically, the tank body 100 is composed of a pipe body 200, an outer enclosure 300, a straight sleeve 400, and a conical sleeve 500. The pipe body 200 has a circular tube structure. The first flange 110 and the second flange 120 are welded to the upper and lower ends of the pipe body 200, respectively. The outer enclosure 300 is welded to the side of the pipe body 200 and forms a vortex pressurization chamber 143 with the outer wall of the pipe body 200. The second inlet 145 and the second outlet 146 are opened on the side of the pipe body 200. The straight sleeve 400 and the conical sleeve 500 are fitted inside the pipe body 200. The outer side of the straight sleeve 400 and the inner side of the pipe body 200 form a flow guiding chamber 144. One end of the straight sleeve 400 faces the pipe body 200. The upper end and side of the tube body 200 are provided with an outwardly extending first baffle 420. The first outlet 142 is opened on the first baffle 420 and passes through the first baffle 420. One end of the cone sleeve 500 faces the lower end of the tube body 200. The diameter of the other end of the cone sleeve 500 gradually decreases and is aligned with the other end of the straight sleeve 400. The gap between the other end of the cone sleeve 500 and the other end of the straight sleeve 400 forms the first outlet 142. The cylindrical part 410 is provided on the inner side of the straight sleeve 400. The cone part 510 is provided on the inner side of the cone sleeve 500. The edge of the first baffle 420 is welded to the upper end of the tube body 200. One end of the cone sleeve 500 is welded to the lower end of the tube body 200.

[0039] In addition, there is a second embodiment for the installation of the tapered sleeve 500 and the straight sleeve 400 with the pipe body 200. One end of the tapered sleeve 500 has an outwardly extending second baffle 520. The diameters of the first baffle 420 and the second baffle 520 are the same as the diameters of the first flange 110 and the second flange 120, respectively. The first baffle 420 and the second baffle 520 abut against the upper and lower end faces of the pipe body 200, respectively. A first through hole 4 is provided on the outer periphery of the first baffle 420. 30. A second through hole 530 is provided on the outer periphery of the second baffle 520. The first through hole 430 corresponds to the through nail hole on the first flange 110, and the second through hole 530 corresponds to the through nail hole on the second flange 120. Compared with the welding connection in the previous embodiment, this embodiment can directly assemble the tapered sleeve 500 and the straight sleeve 400 with the tank body 100, the centrifugal pump, and the water pipeline in an assembly manner, which can save the processing time of the pressure tank, simplify the structure, and facilitate maintenance.

[0040] In addition, there is a third embodiment for the installation of the conical sleeve 500 and the straight sleeve 400 with the pipe body 200. The end face of the first flange 110 is provided with an inwardly recessed first limiting groove 111, and the end face of the second flange 120 is provided with an inwardly recessed second limiting groove 121. The first baffle 420 can be locked in the first limiting groove 111, and the second baffle 520 can be locked in the second limiting groove 121. In this embodiment, the conical sleeve 500 and the straight sleeve 400 are assembled with the tank body 100, the centrifugal pump, and the water pipeline, respectively, and can also be fixed by electric welding. Compared with the previous embodiment, this method has more flexible processing means, but saves more material and processing costs for the conical sleeve 500 and the straight sleeve 400.

[0041] Next, the working principle of the booster tank at the rear end of the centrifugal water pump in this embodiment will be described in detail so that those skilled in the art can better understand this utility model:

[0042] In use, the second flange 120 is connected to the outlet end of the centrifugal water pump. After being pressurized by the centrifugal water pump, the water can enter the conical part 510 of the first-stage pressurization chamber 130 from the main inlet 131 and be pressurized. At this time, the secondary turbulence generated at the side wall of the conical part 510 can flow into the second-stage pressurization chamber 140 through the first inlet 141. Part of the turbulence flows into the guide cavity 144 and flows towards the first outlet 142 to be rectified. Part of the turbulence flows into the vortex pressurization chamber 143 through the second inlet 145 and is pressurized by the arc surface 147. It continues to flow into the guide cavity 144 from the second outlet 146, is rectified, and flows out from the first outlet 142. The second-stage pressurization chamber 140 not only has the function of pressurization but also the function of rectification and elimination of turbulence.

[0043] In summary, the centrifugal water pump's rear-end booster tank in this embodiment can boost the water flow at the centrifugal water pump outlet through a primary booster chamber 130 with a constricted diameter structure. A secondary booster chamber 140 is also arranged around the outer periphery of the primary booster chamber. The first inlet 141 connects the side of the primary booster chamber 130 and the side of the secondary booster chamber 140, thereby introducing the secondary turbulence generated on the side wall of the primary booster chamber 130 after pressurization into the secondary booster chamber 140 for reduction and boosting. Finally, a stable high-pressure water flow is ejected from the first outlet 142, thereby reducing overall energy loss, decreasing turbulence, and further increasing water pressure.

[0044] The foregoing description of specific exemplary embodiments of the present invention is for illustrative and explanatory purposes. These descriptions are not intended to limit the present invention to the precise forms disclosed, and it is obvious that many changes and variations can be made based on the above teachings. Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. The purpose of selecting and describing exemplary embodiments is to explain the specific principles of the present invention and its practical application, so that those skilled in the art, after reading this specification, can make modifications, substitutions, variations, and various choices and changes to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, variations, and choices and changes are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A booster tank at the rear end of a centrifugal water pump, comprising a tank body, wherein a first flange and a second flange are respectively provided at both ends of the tank body, characterized in that: The tank body is provided with a primary pressurization chamber and a secondary pressurization chamber. The primary pressurization chamber has a main inlet and a main outlet at its two ends, respectively. The diameter of the main inlet is larger than the diameter of the main outlet. The secondary pressurization chamber is arranged around the outer periphery of the primary pressurization chamber. The side of the primary pressurization chamber has a first inlet, which connects the secondary pressurization chamber to the primary pressurization chamber. The top of the secondary pressurization chamber has a first outlet. A first flange is arranged around the main outlet and the first outlet, and a second flange is arranged around the main inlet.

2. The booster tank at the rear end of the centrifugal water pump according to claim 1, characterized in that, The secondary pressurization chamber is provided with a vortex pressurization chamber and a flow guiding chamber. The flow guiding chamber is located between the vortex pressurization chamber and the primary pressurization chamber. The first outlet is located at the top of the flow guiding chamber. The first inlet is connected to one side of the flow guiding chamber. The other side of the flow guiding chamber is provided with a second inlet and a second outlet connected to one side of the vortex pressurization chamber. The second outlet is located above the second inlet. The positions of the first inlet and the second inlet are directly opposite each other.

3. The booster tank at the rear end of the centrifugal water pump according to claim 2, characterized in that, There are two or more second water inlets, each of which is arranged in a ring around the side wall of the guide cavity; there are two or more second water outlets, each of which is arranged in a ring around the side wall of the guide cavity.

4. The booster tank at the rear end of the centrifugal water pump according to claim 3, characterized in that, The other side of the vortex booster chamber is provided with an arc surface, and the second inlet and the second outlet are respectively close to the two ends of the arc surface.

5. The booster tank at the rear end of the centrifugal water pump according to claim 2, characterized in that, The sidewall of the primary booster chamber includes a conical section and a cylindrical section. One end of the conical section is connected to the main water inlet, and one end of the cylindrical section is connected to the main water outlet. The first water inlet is located between the other end of the conical section and the other end of the cylindrical section.

6. The booster tank at the rear end of the centrifugal water pump according to claim 5, characterized in that, The first inlet has an annular structure to separate the conical section and the cylindrical section from each other.

7. The booster tank at the rear end of the centrifugal water pump according to claim 6, characterized in that, The tank body is composed of a pipe body, an outer enclosure, a straight sleeve, and a conical sleeve. The first flange and the second flange are respectively disposed at the upper and lower ends of the pipe body. The outer enclosure is welded to the side of the pipe body and forms the vortex pressurization chamber with the outer wall of the pipe body. The second inlet and the second outlet are opened on the side of the pipe body. The straight sleeve and the conical sleeve are fitted inside the pipe body. The outer side of the straight sleeve and the inner side of the pipe body form the flow guiding cavity. One end of the straight sleeve faces the upper end of the pipe body and is provided with an outwardly extending first baffle on its side. The first outlet is opened on the first baffle. The cylindrical part is disposed on the inner side of the straight sleeve. One end of the conical sleeve faces the lower end of the pipe body. The diameter of the other end of the conical sleeve gradually decreases and is aligned with the other end of the straight sleeve. The conical part is disposed on the inner side of the conical sleeve. The gap between the other end of the conical sleeve and the other end of the straight sleeve forms the first outlet.

8. The booster tank at the rear end of the centrifugal water pump according to claim 7, characterized in that, The edge of the first baffle is welded to the upper end of the tube, and one end of the conical sleeve is welded to the lower end of the tube.

9. The booster tank at the rear end of the centrifugal water pump according to claim 7, characterized in that, The side of one end of the cone sleeve is provided with a second baffle extending outward, and the first baffle and the second baffle abut against the end faces of the upper and lower ends of the tube body, respectively.

10. The booster tank at the rear end of the centrifugal water pump according to claim 9, characterized in that, The end face of the first flange is provided with an inwardly recessed first limiting groove, and the end face of the second flange is provided with an inwardly recessed second limiting groove. The first baffle can be locked in the first limiting groove, and the second baffle can be locked in the second limiting groove.

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