Optimized impeller for circulating water pump

Abstract

The optimized impeller for the circulating water pump comprises a shell, five fixing bases are fixedly connected to the surface of the shell, a high-strength stud is inserted into the middle end of each fixing base in a penetrating mode, a locking nut is connected to the surface of each high-strength stud in a threaded mode, and the surface of each high-strength stud is provided with an impeller. And the surface of the locking nut is in contact with the surface of the fixed seat. According to the utility model, through the arrangement of the high-strength studs and the locking nuts, the blades, the mounting disc, the fixed seat and the shell can be locked and mounted, and meanwhile, each group of blades is mounted by only adopting one group of high-strength studs and locking nuts, so that great convenience is brought to mounting and subsequent maintenance work of personnel; and the high-strength stud has higher strength and larger diameter, so that the phenomena that the high-strength stud is broken and the blade is loosened due to the influence of vibration or impact force in the whole operation process are effectively avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to circulating water pump technical field, concretely is a circulating water pump with optimization impeller. BACKGROUND

[0002] In the operation of power plant, circulating water pump is the important equipment, its main function is to provide cooling water for the condenser of steam turbine, to maintain the normal operation of steam turbine, the impeller as the core component of circulating water pump, its performance directly influences the overall working efficiency and reliability of circulating water pump.

[0003] However, the impeller of the existing circulating water pump of power plant often produces greater vibration in the process of operation due to the impact force of water flow, under the long-term influence of vibration and impact force, the mounting bolt of the blade in the impeller is prone to loosening or breaking, which seriously affects the service life of the circulating water pump, and greatly increases the cost of personnel use and maintenance operation. UTILITY MODEL CONTENT

[0004] The utility model discloses a circulating water pump with optimization impeller, has effectively improved the stability of circulating water pump impeller use, avoids the influence of vibration and impact force and causes the blade loosening, improves the overall service life's advantage.

[0005] In order to achieve the above object, the utility model provides the following technical scheme: a circulating water pump with optimization impeller, including the casing, the surface fixedly connected with the fixed seat of casing, the number of fixed seat is five, the middle end of fixed seat is inserted with high -strength stud, the surface screw thread connection of high -strength stud has lock nut, the surface of lock nut is contacted with the surface of fixed seat, the surface fixedly connected with fixed convex ring of lock nut, the surface of fixed convex ring is equipped with the clamping groove, the periphery between the outer surface of fixed seat is equipped with annular groove, the top of fixed seat outer surface and located the side surface of annular groove is equipped with limit groove, the surface of limit groove and the surface of clamping groove are movably connected with limit clamping lever, the side surface fixedly connected with the mounting disc of high -strength stud, the surface of mounting disc is contacted with the surface of fixed seat, the surface of mounting disc and the side fixedly connected with the blade of high -strength stud.

[0006] As a preferred scheme, the surface fixedly connected with the shaft clamp spring of limit clamping lever, the surface of shaft clamp spring is equipped with the surface of annular groove.

[0007] As a preferred scheme, the periphery of mounting disc is equipped with positioning hole, the surface movably connected with the positioning pin of positioning hole, the surface fixedly connected with the surface of fixed seat of positioning pin.

[0008] As a preferred scheme, the bottom of the shell is fixedly connected with a fixing disc, a mounting hole is formed in the surface of the fixing disc, and a reinforcing block is fixedly connected between the top of the fixing disc and the lower end of the outer surface of the shell.

[0009] As a preferred scheme, a threaded hole is formed in the top of the outer surface of the shell, and a flow guide cone is placed on the top of the outer surface of the shell.

[0010] As a preferred scheme, a plurality of inner hexagonal bolts are inserted into the surface of the flow guide cone, and the lower ends of the inner hexagonal bolts are threadedly connected to the surface of the threaded hole.

[0011] As a preferred scheme, the surface of the blade is coated with a ceramic matrix composite coating.

[0012] Compared with the prior art, the utility model has the advantages that:

[0013] 1. The high-strength stud and the locking nut are arranged, the blade, the mounting disc, the fixing seat and the shell can be locked and mounted, one group of high-strength studs and locking nuts are used for mounting each group of blades, which greatly facilitates the installation and subsequent maintenance of personnel, the high-strength stud has high strength and a large diameter, the breakage of the high-strength stud and the loosening of the blade caused by vibration or impact force during overall operation are avoided, the fixing convex ring, the clamping groove, the limiting groove and the limiting clamping rod are arranged, the locking nut and the fixing seat are effectively limited, the locking nut is prevented from rotating and causing the blade to loosen due to vibration during long-term operation, the stability of the circulating water pump impeller during long-term use is ensured, the overall service life is improved, and the cost of personnel use and maintenance is greatly reduced.

[0014] 2. The annular groove and the shaft clamp spring are arranged, the limiting clamping rod is effectively limited and fixed, the limiting clamping rod is prevented from loosening from the surface of the clamping groove and the limiting groove, the shaft clamp spring and the limiting clamping rod can be removed by using a clamp spring tongs during the subsequent disassembly and maintenance of the blade, the limiting of the locking nut is released, the locking nut is disassembled by personnel, the positioning hole and the positioning pin are arranged, the mounting disc and the fixing seat are effectively positioned, the mounting disc and the fixing seat are prevented from being misaligned during installation, the fixing disc and the mounting hole are arranged, the shell is conveniently installed and fixed by personnel, the reinforcing block is arranged, the strength of the connection between the fixing disc and the shell is effectively improved, the inner hexagonal bolt and the threaded hole are arranged, the flow guide cone and the shell are conveniently installed and fixed by personnel, and the ceramic matrix composite coating is arranged, the corrosion and wear resistance of the surface of the blade are effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a perspective view of the utility model;

[0016] Figure 2 is a front view of the utility model;

[0017] Figure 3 is a schematic view of the utility model fixing seat structure;

[0018] Figure 4 is a front view of the utility model fixing seat structure;

[0019] Figure 5 is a perspective view of the utility model Figure 3 is a partial enlarged view of A in the utility model.

[0020] In the figure: 1, shell; 2, blade; 3, mounting disc; 4, fixing seat; 5, flow cone; 6, threaded hole; 7, inner hexagonal bolt; 8, locking nut; 9, high-strength stud; 10, fixing disc; 11, reinforcing block; 12, fixing convex ring; 13, clamping groove; 14, annular groove; 15, shaft clamping spring; 16, limiting groove; 17, limiting clamping rod; 18, positioning hole; 19, positioning pin. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0022] Secondly, the "one embodiment" or "embodiment" referred to herein can include specific features, structures or characteristics in at least one implementation of the utility model. In this specification, "in one embodiment" does not mean the same embodiment, nor is it an independent or alternative embodiment that excludes other embodiments.

[0023] Embodiment one:

[0024] Please refer to Figures 1-5As shown, the utility model provides a kind of optimization impeller for circulating water pump, including shell 1, the surface of shell 1 is fixedly connected with fixed seat 4, the number of fixed seat 4 is five, high-strength stud 9 is inserted in the middle end of fixed seat 4, the surface of high-strength stud 9 is threadedly connected with lock nut 8, the surface of lock nut 8 is contacted with the surface of fixed seat 4, the surface of lock nut 8 is fixedly connected with fixed convex ring 12, the surface of fixed convex ring 12 is provided with clamping groove 13, annular groove 14 is provided between the periphery of the outer surface of fixed seat 4, limit slot 16 is provided in the top of the outer surface of fixed seat 4 and located the side of annular groove 14, limit slot 16 is movably connected between the surface of clamping groove 13 with the surface of limit clamping rod 17, the side of high-strength stud 9 is fixedly connected with mounting disc 3, the surface of mounting disc 3 is contacted with the surface of fixed seat 4, the surface of mounting disc 3 and the side away from high-strength stud 9 are fixedly connected with blade 2.

[0025] In the technical scheme, the high-strength stud 9 and the lock nut 8 are arranged to lock and install the blade 2, the mounting disc 3, the fixed seat 4 and the shell 1, and since each group of blades 2 is installed by using only one group of high-strength stud 9 and lock nut 8, the installation and subsequent maintenance work of personnel is greatly facilitated, and since the high-strength stud 9 has high strength and a relatively large diameter, the high-strength stud 9 is effectively prevented from being broken and causing the blade 2 to be loosened due to vibration or impact force during overall operation, and the fixed convex ring 12, the clamping groove 13, the limit slot 16 and the limit clamping rod 17 are arranged to effectively limit the lock nut 8 and the fixed seat 4, so that the lock nut 8 is prevented from rotating and causing the blade 2 to be loosened due to vibration during long-term operation, thereby ensuring the stability of the circulating water pump impeller during long-term use and operation, improving the overall service life, and greatly reducing the cost of personnel use and maintenance work.

[0026] Embodiment two

[0027] Based on the embodiment one, the utility model discloses as shown Figures 1-5 the surface of limit clamping rod 17 is fixedly connected with shaft snap spring 15, the surface of shaft snap spring 15 is sleeved on the surface of annular groove 14, the periphery of mounting disc 3 is provided with positioning hole 18, positioning hole 18 is movably connected with the surface of positioning pin 19, the surface of positioning pin 19 is fixedly connected with the surface of fixed seat 4, the bottom of shell 1 is fixedly connected with fixed disc 10, the surface of fixed disc 10 is provided with mounting hole, the top of fixed disc 10 and the lower end between the outer surface of shell 1 are fixedly connected with reinforcing block 11, the top of the outer surface of shell 1 is provided with threaded hole 6, the outer surface of shell 1 is placed with flow cone 5, the surface of flow cone 5 is inserted with internal hexagon bolt 7, the lower end of internal hexagon bolt 7 is threadedly connected with the surface of threaded hole 6, the surface of blade 2 is coated with ceramic matrix composite coating.

[0028] In the technical solution, the annular groove 14 and the shaft clamp spring 15 are arranged to effectively limit and fix the limiting clamp rod 17, avoid the limiting clamp rod 17 from being loosened from the surface of the clamping groove 13 and the limiting groove 16, and meanwhile, the shaft clamp spring 15 and the limiting clamp rod 17 can be removed by using a clamp spring wrench in the process of disassembling and maintaining the subsequent blade 2, the limiting of the locking nut 8 is released, the locking nut 8 is disassembled, the positioning hole 18 and the positioning pin 19 are arranged to effectively position the mounting disc 3 and the fixing seat 4, avoid misplacement between the mounting disc 3 and the fixing seat 4 in the process of installation, the fixing disc 10 and the mounting hole are arranged to facilitate the installation and fixation of the shell 1, the reinforcing block 11 is arranged to effectively improve the connection strength between the fixing disc 10 and the shell 1, the internal hexagonal bolt 7 and the threaded hole 6 are arranged to facilitate the installation and fixation between the flow guide cone 5 and the shell 1, and the ceramic matrix composite coating is arranged to effectively improve the corrosion and wear resistance of the surface of the blade 2.

[0029] Finally, it should be noted that the above examples are only used to illustrate the technical solutions of the present application, and are not intended to limit the scope of protection of the present application. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced by equivalents without departing from the essence and scope of the present application.

Claims

1. An optimized impeller for a circulating water pump comprising a casing (1), characterized in that: The surface of the shell (1) is fixedly connected with the fixing seat (4), the number of the fixing seat (4) is five, the middle end of the fixing seat (4) is inserted with the high-strength stud (9), the surface of the high-strength stud (9) is threadedly connected with the locking nut (8), the surface of the locking nut (8) is in contact with the surface of the fixing seat (4), the surface of the locking nut (8) is fixedly connected with the fixing convex ring (12), the surface of the fixing convex ring (12) is provided with the clamping groove (13), the periphery of the outer surface of the fixing seat (4) is provided with the annular groove (14), the top of the outer surface of the fixing seat (4) and the side of the annular groove (14) are provided with the limiting groove (16), the surface of the limiting groove (16) and the surface of the clamping groove (13) are movably connected with the limiting clamping rod (17), the side of the high-strength stud (9) is fixedly connected with the mounting disc (3), the surface of the mounting disc (3) is in contact with the surface of the fixing seat (4), the surface of the mounting disc (3) and the side away from the high-strength stud (9) are fixedly connected with the blade (2).

2. An optimized impeller for a circulating water pump according to claim 1, characterized in that: The surface of the limiting clamping rod (17) is fixedly connected with the shaft clamp spring (15), and the surface of the shaft clamp spring (15) is sleeved on the surface of the annular groove (14).

3. An optimized impeller for a circulating water pump as claimed in claim 1, wherein: The periphery of the mounting disc (3) is provided with the positioning hole (18), the surface of the positioning hole (18) is movably connected with the positioning pin (19), and the surface of the positioning pin (19) is fixedly connected with the surface of the fixing seat (4).

4. An optimized impeller for a circulating water pump according to claim 1, characterized in that: The bottom of the shell (1) is fixedly connected with the fixing disc (10), the surface of the fixing disc (10) is provided with the mounting hole, and the top of the fixing disc (10) and the lower end of the outer surface of the shell (1) are fixedly connected with the reinforcing block (11).

5. An optimized impeller for a circulating water pump according to claim 1, characterized in that: The top of the outer surface of the shell (1) is provided with the threaded hole (6), and the top of the outer surface of the shell (1) is placed with the flow guide cone (5).

6. An optimized impeller for a circulating water pump according to claim 5, characterized in that: The surface of the flow guide cone (5) is inserted with the inner hexagonal bolt (7), and the lower end of the inner hexagonal bolt (7) is threadedly connected with the surface of the threaded hole (6).

7. An optimized impeller for a circulating water pump according to claim 1, characterized in that: The surface of the blade (2) is coated with a ceramic matrix composite coating.

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