Special-shaped nozzle of steam turbine air extractor

Abstract

The utility model discloses a special-shaped nozzle of a steam turbine air extractor, and relates to the technical field of special-shaped nozzles of air extractors, the special-shaped nozzle comprises a nozzle main body and a nozzle communicating pipe, the upper end of the nozzle main body is provided with a second nozzle, and the outer side of the nozzle main body is provided with an anti-slip strip; according to the special-shaped nozzle of the steam turbine air extractor, when a nozzle body needs to be detached, the nozzle body is rotated, a connecting pipe and a clamping block are driven to rotate along the interior of a rotating groove, then a positioning groove is extruded along the outer side of a positioning pin, the positioning pin is separated from the interior of the positioning groove, and when the clamping block corresponds to a clamping groove, the nozzle body is pulled, so that the nozzle body is detached; the connecting pipe is driven to move outwards along the interior of the moving groove, the clamping block is further driven to move outwards along the interior of the clamping groove, so that the connecting pipe and the nozzle communicating pipe are quickly separated and disassembled, the disassembling efficiency is improved, and follow-up maintenance and replacement are facilitated.

Description

An irregularly shaped nozzle for a steam turbine ejector Technical Field

[0001] This utility model relates to the field of irregular nozzles for air ejectors, and in particular to an irregular nozzle for a steam turbine air ejector. Background Technology

[0002] A steam turbine is a rotating power device that converts the thermal energy of steam into mechanical energy. It is widely used in thermal power generation, nuclear power and other fields. Its core function is to drive the rotor to rotate by expanding the steam through nozzles, which in turn drives the generator to generate electricity. The ejector is used to remove air and non-condensable gases from the condenser to maintain a vacuum environment and ensure efficient steam condensation, thereby improving the efficiency of the steam turbine.

[0003] Existing irregular nozzles are mostly fixed with threads during installation and disassembly of the ejector, requiring multiple rotations to remove them. This is time-consuming and labor-intensive during subsequent maintenance and replacement, and delays the use of the ejector. Therefore, this utility model proposes an irregular nozzle for a steam turbine ejector. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this utility model provides an irregularly shaped nozzle for a steam turbine ejector, which solves the problems mentioned in the background section.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a special-shaped nozzle for a steam turbine ejector, comprising a nozzle body and a nozzle connecting pipe, wherein a second nozzle is provided at the upper end of the nozzle body, an anti-slip strip is provided on the outer side of the nozzle body, a connecting pipe is provided at one end of the nozzle body, and a disassembly assembly is provided between the connecting pipe and the nozzle connecting pipe;

[0006] The disassembly assembly includes a locking block, a positioning groove on the outer side of the locking block, a moving groove and a locking groove on one side of the nozzle connecting pipe, a rotating groove inside the moving groove, an auxiliary block on the outer side of the nozzle connecting pipe, a compression groove and an auxiliary groove at the bottom of the auxiliary block, a positioning pin inside the auxiliary groove, an auxiliary plate at one end of the positioning pin, and a support spring on one side of the auxiliary plate.

[0007] As a further technical solution of this utility model, the nozzle body is connected to the second nozzle, the number of the second nozzle is four groups arranged in an array, the anti-slip strip is fixedly connected to the nozzle body, and the number of the anti-slip strip is several groups arranged in an array.

[0008] As a further technical solution of this utility model, the connecting pipe is connected to the nozzle body, the nozzle connecting pipe is connected to the connecting pipe, and the connecting pipe and the nozzle connecting pipe are connected by a disassembly assembly.

[0009] As a further technical solution of this utility model, the card block and the connecting pipe are fixedly connected, the number of card blocks is two sets and they are symmetrically distributed, the outer edge of the card block is an arc-shaped structure, the positioning groove is a cylindrical structure, and the number of positioning grooves is equal to the number of card blocks.

[0010] As a further technical solution of this utility model, the moving groove and the card slot are connected, the number of card slots is two sets and they are symmetrically distributed, the card slots and the card blocks are adapted to each other, and the rotating groove and the moving groove are connected.

[0011] As a further technical solution of this utility model, the auxiliary blocks are in two sets and are symmetrically distributed. The compression groove and the auxiliary groove are connected. The end of the positioning pin is a hemispherical structure. The positioning pin is adapted to the positioning groove. The auxiliary plate is adapted to the compression groove. The two ends of the support spring are respectively connected to the compression groove and the auxiliary plate.

[0012] This invention provides an irregularly shaped nozzle for a steam turbine ejector. Compared with the prior art, it has the following advantages:

[0013] This design relates to an irregularly shaped nozzle for a steam turbine ejector. A disassembly assembly is installed between the nozzle body and the nozzle connecting pipe. When the nozzle body needs to be disassembled, rotating the nozzle body causes the connecting pipe and the locking block to rotate along the inside of the rotating groove. This causes the positioning groove to press against the outside of the positioning pin, disengaging the positioning pin from the inside of the positioning groove. When the locking block aligns with the slot, pulling the nozzle body moves the connecting pipe outward along the inside of the moving groove, further moving the locking block outward along the inside of the slot. This allows for rapid disassembly of the connecting pipe from the nozzle connecting pipe, improving disassembly efficiency and facilitating subsequent maintenance and replacement. Attached Figure Description

[0014] Figure 1 is a schematic diagram of the overall structure of an irregularly shaped nozzle of a steam turbine ejector;

[0015] Figure 2 is a partial exploded view of an irregularly shaped nozzle of a steam turbine ejector;

[0016] Figure 3 is a partial side sectional view of an irregularly shaped nozzle of a steam turbine ejector;

[0017] Figure 4 is an enlarged view of the irregular nozzle of a steam turbine ejector, specifically A in Figure 3.

[0018] In the diagram: 1. Nozzle body; 2. Second nozzle; 3. Anti-slip strip; 4. Connecting pipe; 5. Nozzle connecting pipe; 6. Disassembly assembly; 61. Locking block; 62. Positioning groove; 63. Moving groove; 64. Locking slot; 65. Rotating groove; 66. Auxiliary block; 67. Compression groove; 68. Auxiliary groove; 69. Positioning pin; 610. Auxiliary plate; 611. Support spring. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0020] Please refer to Figures 1-4. This utility model provides a technical solution for an irregular nozzle of a steam turbine ejector: an irregular nozzle of a steam turbine ejector includes a nozzle body 1 and a nozzle connecting pipe 5. A second nozzle 2 is provided at the upper end of the nozzle body 1. An anti-slip strip 3 is provided on the outer side of the nozzle body 1. A connecting pipe 4 is provided at one end of the nozzle body 1. A disassembly assembly 6 is provided between the connecting pipe 4 and the nozzle connecting pipe 5.

[0021] The disassembly assembly 6 includes a locking block 61. The locking block 61 has a positioning groove 62 on its outer side. The nozzle connecting pipe 5 has a moving groove 63 and a locking groove 64 on one side. The moving groove 63 has a rotating groove 65 inside. The nozzle connecting pipe 5 has an auxiliary block 66 on its outer side. The bottom of the auxiliary block 66 has a compression groove 67 and an auxiliary groove 68. The auxiliary groove 68 has a positioning pin 69 inside. One end of the positioning pin 69 has an auxiliary plate 610. One side of the auxiliary plate 610 has a support spring 611.

[0022] As shown in Figures 1-3, the nozzle body 1 is connected to the second nozzle 2. There are four sets of second nozzles 2 arranged in an array. The anti-slip strip 3 is fixedly connected to the nozzle body 1. There are several sets of anti-slip strips 3 arranged in an array. The connecting pipe 4 is connected to the nozzle body 1. The nozzle connecting pipe 5 is connected to the connecting pipe 4. The connecting pipe 4 and the nozzle connecting pipe 5 are connected by the disassembly assembly 6, which facilitates the connection between the nozzle connecting pipe 5 and the nozzle body 1, and makes it easier for the nozzle body 1 to convert steam thermal energy into kinetic energy (accelerated by expansion).

[0023] As shown in Figure 2-4, the locking block 61 is fixedly connected to the connecting pipe 4. There are two sets of locking blocks 61, which are symmetrically distributed. The outer edge of the locking block 61 has an arc-shaped structure. The positioning groove 62 has a cylindrical structure. The number of positioning grooves 62 is equal to the number of locking blocks 61. The moving groove 63 is connected to the locking groove 64. There are two sets of locking grooves 64, which are symmetrically distributed. The locking grooves 64 and locking blocks 61 are compatible. The rotating groove 65 is connected to the moving groove 63. There are two sets of auxiliary blocks 66, which are symmetrically distributed. The compression groove 67 and auxiliary groove 68 are connected. The end of the positioning pin 69 has a hemispherical structure. The positioning pin 69 is compatible with the positioning groove 62. The auxiliary plate 610 is compatible with the compression groove 67. The two ends of the support spring 611 are connected to the compression groove 67 and the auxiliary plate 610, respectively. This facilitates the quick disassembly of the nozzle body 1 and the nozzle connecting pipe 5, and facilitates the subsequent maintenance and replacement of the nozzle body 1.

[0024] The working principle of this utility model is as follows: When the nozzle body 1 needs to be disassembled, hold the anti-slip strip 3 and rotate the nozzle body 1, which will drive the connecting pipe 4 and the locking block 61 to rotate. This will cause the positioning groove 62 to be squeezed along the outside of the positioning pin 69, causing the positioning pin 69 to disengage from the inside of the positioning groove 62 and be squeezed along the inside of the auxiliary groove 68. At the same time, the auxiliary plate 610 will move along the inside of the compression groove 67 and the support spring 611 will be compressed until the locking block 61 is rotated 90 degrees and the locking block 61 corresponds with the locking groove 64. By pulling the nozzle body 1, the connecting pipe 4 will move outward along the inside of the moving groove 63, which will further drive the locking block 61 to move outward along the inside of the locking groove 64. This will allow the connecting pipe 4 to be quickly disassembled from the nozzle connecting pipe 5, thereby improving the disassembly efficiency and facilitating subsequent maintenance and replacement.

[0025] The above are merely preferred embodiments of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model are implemented according to conventional methods in the art, unless otherwise specified or limited.

Claims

1. A special-shaped nozzle for a steam turbine ejector, comprising a nozzle body (1) and a nozzle connecting pipe (5), characterized in that, The nozzle body (1) is provided with a second nozzle (2) at its upper end. The nozzle body (1) is provided with an anti-slip strip (3) on its outer side. The nozzle body (1) is provided with a connecting pipe (4) at one end. A disassembly assembly (6) is provided between the connecting pipe (4) and the nozzle connecting pipe (5). The disassembly assembly (6) includes a locking block (61). The locking block (61) is provided with a positioning groove (62) on its outer side. The nozzle connecting pipe (5) is provided with a moving groove (63) and a locking groove (64) on one side. The moving groove (63) is provided with a rotating groove (65) inside. The nozzle connecting pipe (5) is provided with an auxiliary block (66) on its outer side. The auxiliary block (66) is provided with a compression groove (67) and an auxiliary groove (68) at its bottom. The auxiliary groove (68) is provided with a positioning pin (69) inside. The positioning pin (69) is provided with an auxiliary plate (610) at one end. The auxiliary plate (610) is provided with a support spring (611) on one side.

2. The irregularly shaped nozzle of a steam turbine ejector according to claim 1, characterized in that, The nozzle body (1) is connected to the second nozzle (2), and the number of the second nozzle (2) is four groups arranged in an array. The anti-slip strip (3) is fixedly connected to the nozzle body (1), and the number of the anti-slip strip (3) is several groups arranged in an array.

3. The irregularly shaped nozzle of a steam turbine ejector according to claim 1, characterized in that, The connecting pipe (4) is connected to the nozzle body (1), the nozzle connecting pipe (5) is connected to the connecting pipe (4), and the connecting pipe (4) and the nozzle connecting pipe (5) are connected by a disassembly assembly (6).

4. The irregularly shaped nozzle of a steam turbine ejector according to claim 1, characterized in that, The card block (61) is fixedly connected to the connecting pipe (4). There are two sets of card blocks (61) and they are symmetrically distributed. The outer edge of the card block (61) is an arc-shaped structure. The positioning groove (62) is a cylindrical structure. The number of positioning grooves (62) is equal to the number of card blocks (61).

5. The irregularly shaped nozzle of a steam turbine ejector according to claim 1, characterized in that, The movable slot (63) is connected to the card slot (64). There are two sets of card slots (64) and they are symmetrically distributed. The card slots (64) are adapted to the card block (61). The rotating slot (65) is connected to the movable slot (63).

6. The irregularly shaped nozzle of a steam turbine ejector according to claim 1, characterized in that, The auxiliary blocks (66) are in two sets and are symmetrically distributed. The compression groove (67) and the auxiliary groove (68) are connected. The end of the positioning pin (69) is a hemispherical structure. The positioning pin (69) is adapted to the positioning groove (62). The auxiliary plate (610) is adapted to the compression groove (67). The two ends of the support spring (611) are connected to the compression groove (67) and the auxiliary plate (610) respectively.

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