CN215408963U

CN215408963U - Bolt connecting structure for vane pump of mixed-flow water turbine

Info

Publication number: CN215408963U
Application number: CN202121104463.4U
Authority: CN
Inventors: 浦恩良; 王金映; 高玉国; 吴剑萍; 秦永全; 赵志彪; 郑建兵; 孔维宽; 冯光忠
Original assignee: Yunnan Yuxi Hydroelectric Power Equipment Co ltd
Current assignee: Yunnan Yuxi Hydroelectric Power Equipment Co ltd
Priority date: 2021-05-21
Filing date: 2021-05-21
Publication date: 2022-01-04
Anticipated expiration: 2031-05-21

Abstract

The utility model discloses a bolt connection structure of a mixed-flow water turbine vane pump, which comprises a vane pump, wherein vanes are arranged on the front surface of the output end of the vane pump, a fixing ring is fixedly connected to the front surface of each vane, the fixing ring is sleeved on the surface of the output end of the vane pump, threaded openings are formed in the top and the bottom of the output end of the vane pump, screw rods are connected to the top and the bottom of the fixing ring in a threaded manner, and one side of each screw rod, close to the output end of the vane pump, extends to the inside of the threaded opening. The utility model solves the problems that the existing mixed-flow water turbine does not have a certain bolt connection structure, the water turbine blade is welded on the vane pump, fatigue damage is easy to occur at the crown welding position, even annular and axial cracks occur, the operation safety of the unit is influenced, and the use of the unit is inconvenient for a user.

Description

Bolt connecting structure for vane pump of mixed-flow water turbine

Technical Field

The utility model relates to the technical field of mixed-flow water turbines, in particular to a bolt connecting structure of a vane pump of a mixed-flow water turbine.

Background

The water turbine is a power machine for converting the energy of water flow into rotary mechanical energy, belongs to a turbine machine in fluid machinery, and appears in China as early as the year before and after the era of the public yuan, and is used for pumping irrigation and driving grain processing equipment.

The impeller pump need be used to hydraulic turbine in use, but current mixed-flow hydraulic turbine does not possess certain bolted connection's structure, and the welding has water wheels blade on the impeller pump, and fatigue failure easily appears in the hat splice, appears hoop and axial crack even, influences the security of unit operation, and the person of not being convenient for uses, has reduced mixed-flow hydraulic turbine's practicality.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems in the prior art, the utility model aims to provide a bolt connection structure of a vane pump of a mixed-flow water turbine, which has the advantages of a threaded connection structure and solves the problems that the existing mixed-flow water turbine does not have a certain bolt connection structure, water turbine vanes are welded on a vane pump, fatigue damage is easy to occur at the welding position of a crown, even annular and axial cracks occur, the operation safety of a unit is influenced, and the use of the unit is inconvenient for a user.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a francis turbine impeller pump bolted connection structure, includes the impeller pump, the front of impeller pump output end is provided with the blade, the solid fixed ring of positive fixedly connected with of blade, solid fixed ring cover is established on the surface of impeller pump output end, the screw thread mouth has all been seted up to the top and the bottom of impeller pump output end, the equal threaded connection in top and the bottom of solid fixed ring has the screw rod, one side that the screw rod is close to impeller pump output end extends to the inside of screw thread mouth, one side that the impeller pump was kept away from to the screw rod is provided with and compresses tightly the subassembly, gu fixed ring's top and bottom all are provided with the chucking subassembly, one side that the impeller pump was kept away from to the screw rod is provided with the nut, one side that the nut is close to the impeller pump is provided with fixed subassembly.

Preferably, the compressing assembly comprises a limiting groove, the limiting groove is formed in one side, away from the vane pump, of the screw, a tension spring is fixedly connected to one side, close to the vane pump, of the inner wall of the limiting groove, a fixing rod is fixedly connected to one side, away from the vane pump, of the tension spring, and the top of the fixing rod is fixedly connected with the surface of the nut.

Preferably, the clamping assembly comprises a limiting ring, the limiting ring is fixedly connected to the top and the bottom of the fixing ring, and a clamping block is fixedly connected to one side, away from the vane pump, of the fixing ring.

Preferably, the fixing assembly comprises a support ring, the support ring is fixedly connected to one side of the nut close to the vane pump, and a clamping groove movably connected with the clamping block is fixedly connected to the surface of the support ring.

Preferably, a sliding groove is formed in one side, close to the vane pump, of the fixed rod, and a sliding rod in sliding connection with the sliding groove is fixedly connected to one side, close to the vane pump, of the inner wall of the limiting groove.

Preferably, the screw rod and the fixing rod are both made of fine steel, and the tension spring is a powerful tension spring.

Compared with the prior art, the utility model has the following beneficial effects:

1. the screw bolt connection structure of the mixed-flow water turbine vane pump has the advantages of a screw thread connection structure, and the practicability of the mixed-flow water turbine is improved.

2. The screw cap is arranged, so that a user can conveniently rotate the fixing rod, the fixing rod can drive the screw rod to rotate, and the screw cap is convenient for the user to use.

3. The clamping block is arranged, so that the clamping block can be matched with the clamping groove for use, and the practicability of the clamping groove is improved to a certain extent.

4. The clamping groove is arranged, so that the clamping groove can be matched with the clamping block for use, the fixing effect is achieved, and the use by a user is facilitated.

5. The sliding rod is arranged, so that the sliding rod can slide in the sliding groove, the fixed rod can be limited, and the use by a user is facilitated.

6. According to the clamping block, the tension spring is arranged, so that the fixed rod can be pulled, and the tightness between the clamping block and the clamping groove is effectively improved.

Drawings

FIG. 1 is a front view of the structure of the present invention;

FIG. 2 is an enlarged view of the structure at A in FIG. 1;

FIG. 3 is an enlarged view of the structure at B in FIG. 1;

fig. 4 is a perspective view of the structural screw of the present invention.

In the figure: 1. a vane pump; 2. a blade; 3. a fixing ring; 4. a threaded opening; 5. a screw; 6. a compression assembly; 61. a limiting groove; 62. a tension spring; 63. fixing the rod; 7. a clamping assembly; 1. a limiting ring; 72. a clamping block; 8. a nut; 9. a fixing assembly; 91. a support ring; 92. a card slot; 10. a chute; 11. a slide bar.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 4, the bolting structure for a vane pump of a mixed-flow water turbine provided by the utility model comprises a vane pump 1, wherein a vane 2 is arranged on the front surface of an output end of the vane pump 1, a fixing ring 3 is fixedly connected to the front surface of the vane 2, the fixing ring 3 is sleeved on the surface of the output end of the vane pump 1, threaded openings 4 are formed in the top and the bottom of the output end of the vane pump 1, a screw 5 is connected to the top and the bottom of the fixing ring 3 in a threaded manner, one side of the screw 5, which is close to the output end of the vane pump 1, extends into the threaded opening 4, a pressing component 6 is arranged on one side of the screw 5, which is far away from the vane pump 1, clamping components 7 are arranged on the top and the bottom of the fixing ring 3, a nut 8 is arranged on one side of the screw 5, which is far away from the vane pump 1, and a fixing component 9 is arranged on one side of the nut 8, which is close to the vane pump 1.

Referring to fig. 2, the pressing assembly 6 includes a limiting groove 61, the limiting groove 61 is opened on one side of the screw 5 far away from the vane pump 1, one side of the inner wall of the limiting groove 61 close to the vane pump 1 is fixedly connected with a tension spring 62, one side of the tension spring 62 far away from the vane pump 1 is fixedly connected with a fixing rod 63, and the top of the fixing rod 63 is fixedly connected with the surface of the nut 8.

As a technical optimization scheme of the utility model, through the arrangement of the screw cap 8, a user can conveniently rotate the fixing rod 63, so that the fixing rod 63 can drive the screw rod 5 to rotate, and the use by the user is convenient.

Referring to fig. 2, the clamping assembly 7 includes a limiting ring 71, the limiting ring 71 is fixedly connected to the top and the bottom of the fixing ring 3, and a clamping block 72 is fixedly connected to one side of the fixing ring 3 away from the vane pump 1.

As a technical optimization scheme of the utility model, the fixture block 72 can be matched with the clamping groove 92 for use, so that the practicability of the clamping groove 92 is improved to a certain extent.

Referring to fig. 3, the fixing assembly 9 includes a support ring 91, the support ring 91 is fixedly connected to a side of the nut 8 close to the vane pump 1, and a locking groove 92 movably connected to the locking block 72 is fixedly connected to a surface of the support ring 91.

As a technical optimization scheme of the utility model, the clamping groove 92 can be matched with the clamping block 72 for use, so that a fixing effect is achieved, and the use by a user is convenient.

Referring to fig. 3, a sliding groove 10 is formed in one side of the fixing rod 63 close to the vane pump 1, and a sliding rod 11 slidably connected with the sliding groove 10 is fixedly connected to one side of the inner wall of the limiting groove 61 close to the vane pump 1.

As a technical optimization scheme of the utility model, the slide rod 11 can slide in the chute 10, and can limit the fixed rod 63, so that the slide rod is convenient for a user to use.

Referring to fig. 2, the screw 5 and the fixing rod 63 are made of fine steel, and the tension spring 62 is a strong tension spring.

As a technical optimization scheme of the utility model, the fixing rod 63 can be pulled through the arrangement of the tension spring 62, so that the tightness between the fixture block 72 and the clamping groove 92 is effectively improved.

The working principle and the using process of the utility model are as follows: during the use, when the user need fix blade 2, the user installs screw rod 5 in the inside of screw thread mouth 4 earlier, then user's rotatory nut 8 is fixed solid fixed ring 3, make spacing ring 71 and support ring 91 contact, then continue rotatory nut 8, make draw-in groove 92 and fixture block 72 carry out chucking mutually, exert pressure through the powerful of extension spring 62, can fix spacing ring 71 and support ring 91 and prevent that nut 8 is not hard up the gyration, when the user needs to dismantle screw rod 5, the user pulls nut 8 to both sides, make spacing ring 71 break away from support ring 91, can dismantle, thereby reach the connection structure of bolt.

In summary, the following steps: this francis turbine impeller pump bolted connection structure, through setting up impeller pump 1, blade 2, solid fixed ring 3, screw thread mouth 4, screw rod 5, compress tightly subassembly 6, chucking subassembly 7, nut 8 and fixed subassembly 9's cooperation is used, the structure that current francis turbine does not possess certain bolted connection has been solved, the welding has the water wheel blade on the impeller pump, fatigue failure easily appears in the hat welding department, hoop and axial crack appear even, influence the security of unit operation, the problem that the person of not convenient to use used.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a francis turbine impeller pump bolted connection structure, includes impeller pump (1), its characterized in that: the front of the output end of the vane pump (1) is provided with a vane (2), the front of the vane (2) is fixedly connected with a fixed ring (3), the fixed ring (3) is sleeved on the surface of the output end of the vane pump (1), the top and the bottom of the output end of the vane pump (1) are both provided with threaded openings (4), the top and the bottom of the fixed ring (3) are both in threaded connection with a screw (5), one side of the screw rod (5) close to the output end of the vane pump (1) extends to the inside of the threaded opening (4), a pressing component (6) is arranged on one side of the screw rod (5) far away from the vane pump (1), the top and the bottom of the fixed ring (3) are both provided with a clamping component (7), a screw cap (8) is arranged on one side of the screw rod (5) far away from the vane pump (1), and a fixing component (9) is arranged on one side of the nut (8) close to the vane pump (1).

2. The francis turbine vane pump bolt connection structure of claim 1, wherein: compress tightly subassembly (6) including spacing groove (61), one side of keeping away from impeller pump (1) in screw rod (5) is seted up in spacing groove (61), one side fixedly connected with extension spring (62) that the inner wall of spacing groove (61) is close to impeller pump (1), one side fixedly connected with dead lever (63) of impeller pump (1) are kept away from in extension spring (62), the top of dead lever (63) is connected with the fixed surface of nut (8).

3. The francis turbine vane pump bolt connection structure of claim 1, wherein: chucking subassembly (7) include spacing ring (71), spacing ring (71) fixed connection is in the top and the bottom of solid fixed ring (3), gu one side fixedly connected with fixture block (72) of impeller pump (1) are kept away from in fixed ring (3).

4. A francis turbine vane pump bolt connection structure according to claim 3, wherein: fixed subassembly (9) are including support ring (91), support ring (91) fixed connection is in nut (8) one side of being close to impeller pump (1), the fixed surface of support ring (91) is connected with draw-in groove (92) with fixture block (72) swing joint.

5. The francis turbine vane pump bolt connection structure of claim 2, wherein: one side of the fixed rod (63) close to the vane pump (1) is provided with a sliding groove (10), and one side of the inner wall of the limiting groove (61) close to the vane pump (1) is fixedly connected with a sliding rod (11) in sliding connection with the sliding groove (10).

6. The francis turbine vane pump bolt connection structure of claim 2, wherein: the screw rod (5) and the fixed rod (63) are both made of fine steel, and the tension spring (62) is a powerful tension spring.