CN218324978U

CN218324978U - Steam chamber of steam turbine

Info

Publication number: CN218324978U
Application number: CN202222755658.6U
Authority: CN
Inventors: 刘永江; 裘盛平
Original assignee: Ningbo Fenghua Sanding Alloy Steel Casting Co ltd
Current assignee: Ningbo Fenghua Sanding Alloy Steel Casting Co ltd
Priority date: 2022-10-19
Filing date: 2022-10-19
Publication date: 2023-01-17
Anticipated expiration: 2032-10-19

Abstract

The utility model provides a steam turbine steam chamber, include: the body of integrated into one piece, the body is provided with into steam port, this internal steam chamber group that is provided with, steam chamber group is including a plurality of steam chambers, set up the steam passageway with into steam port intercommunication on the body, steam passageway and steam chamber upper end intercommunication, steam chamber lower extreme intercommunication has out the steam port, be provided with a plurality of governing valves that are used for controlling steam chamber and steam passageway intercommunication/block on the body, the governing valve mounting hole that is used for installing the governing valve is seted up to the body upper end, the governing valve mounting hole runs through steam passageway downwards and extends to the steam chamber that corresponds, be provided with protruding muscle group in the steam chamber, the protruding muscle group department that corresponds on the steam chamber, its width reduces from top to bottom. The utility model discloses steam turbine steam chamber, steam can concentrate and blow off, and the steam velocity of flow that blows off is big to the rotor pivoted power is blown in the increase, improves energy conversion efficiency, and energy utilization is rateed highly.

Description

Steam chamber of steam turbine

Technical Field

The utility model relates to a steam turbine technical field, in particular to steam turbine steam chamber.

Background

A steam turbine is a rotary power machine that converts the energy of steam into mechanical work. Also known as steam turbines. The engine is mainly used as a prime mover for power generation, and can directly drive various pumps, fans, compressors, ship propellers and the like. The exhaust steam or intermediate extraction steam of the steam turbine can be used for meeting the heat supply requirements in production and life. The steam chamber of the steam turbine, also called the nozzle block chamber, is designed to receive steam from the steam inlet pipe and to support the nozzle block. The steam enters from the steam inlet of the steam chamber and flows out from the steam outlet of the steam chamber to blow the rotor to rotate.

In some existing steam chambers, high-pressure steam flows through the internal structure of the steam chamber and then is blown out, the flow rate of the blown steam is small and not concentrated enough, the force for blowing the rotor is small, the steam energy conversion efficiency is low, and the energy utilization rate is not high.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model aims to solve the problem that a steam turbine steam chamber is provided, steam can concentrate and blow off, and the steam velocity of flow that blows off is big to the increase blows rotor pivoted power, improves energy conversion efficiency.

(II) technical scheme

For solving the technical problem, the utility model provides a steam turbine steam chamber, include: the steam inlet is connected with a high-pressure steam pipeline valve, and high-pressure steam enters the body from the steam inlet along the horizontal direction; a steam cavity group is arranged in the body and comprises a plurality of steam cavities, and steam entering from the steam inlet is divided into the plurality of steam cavities for blowing out; the steam cavity is provided with a steam inlet communicated with the steam cavity, the steam cavity is communicated with the steam cavity, the steam cavity extends along the horizontal direction, and the extending direction of the steam cavity is consistent with the direction of introducing steam into the steam cavity along the steam channel; the lower end of the steam cavity is communicated with a steam outlet, and steam passes through the steam cavity from top to bottom; the body is provided with a plurality of regulating valves for controlling the communication/blockage of the steam cavity and the steam channel, and the total steam outlet quantity of the steam outlet is changed by changing the number of the steam cavities communicated with the steam channel, wherein the total steam outlet quantity is the sum of the steam outlet quantities of all the steam outlets; the utility model discloses a steam generating set, including body, governing valve, steam channel, steam chamber, protruding muscle group, steam flow, the governing valve mounting hole of governing valve is seted up on the body upper end and is used for the installation the governing valve mounting hole of governing valve, the governing valve mounting hole runs through downwards steam channel extends to the correspondence the steam chamber, be provided with protruding muscle group in the steam chamber, correspond on the steam chamber protruding muscle group department, its width reduces from top to bottom, and steam from top to bottom passes through the in-process in steam chamber, protruding muscle group can inwards gather together steam, and steam blows out more concentratedly, and steam flow reduces when flowing through protruding muscle group, and the steam velocity of flow increases to the rotor pivoted power is blown in the increase, improves energy conversion efficiency, and energy utilization is rateed is high.

Furthermore, the steam cavity comprises a left side wall and a right side wall opposite to the left side wall, the convex rib group comprises a first convex rib and a second convex rib which are oppositely arranged, one end of the first convex rib is connected with the left side wall, and the other end of the first convex rib inclines towards the lower side; one end of the second convex rib is connected with the right side wall, and the other end of the second convex rib inclines towards the lower side.

Furthermore, the first convex rib is far away from one end of the left side wall and extends to the steam outlet, and the second convex rib is far away from one end of the right side wall and extends to the steam outlet.

Furthermore, the number of the regulating valves is the same as that of the steam cavities, and a through hole is formed between the steam channel and the steam cavities.

Further, steam cavity group includes first steam chamber, second steam chamber, third steam chamber and fourth steam chamber, it includes first steam outlet, second steam outlet, third steam outlet, fourth steam outlet and fifth steam outlet to go out the steam port, first steam outlet with first steam chamber lower extreme intercommunication, second steam outlet with second steam chamber lower extreme intercommunication, third steam outlet with third steam chamber lower extreme intercommunication, fourth steam outlet reaches fifth steam outlet all with fourth steam chamber lower extreme intercommunication, fourth steam outlet with be provided with between the fifth steam outlet and cut off protruding muscle.

Furthermore, the first steam outlet, the second steam outlet, the third steam outlet, the fourth steam outlet and the fifth steam outlet are sequentially arranged along an arc line.

Further, the partition ribs comprise extending sections extending upwards.

Furthermore, the material of the body is high temperature resistant cast steel.

(III) advantageous effects

In the steam chamber of the steam turbine, steam can be blown out in a centralized manner, and the flow velocity of the blown steam is high, so that the rotating force of the blowing rotor is increased, the energy conversion efficiency is improved, and the energy utilization rate is high; the steam is blown out downwards along the upper inclined plane of the second convex rib, two opposite convex ribs are arranged, and meanwhile, the steam is gathered inwards, so that the steam is blown out more intensively; the steam outlet at the lower end of the fourth steam chamber is divided into a fourth steam outlet and a fifth steam outlet through partition ribs, so that steam in the fourth steam chamber is discharged from the fourth steam outlet and the fifth steam outlet at the same time, the number of the connected steam nozzles is more than that of the steam chambers, and the steam nozzles can blow steam towards different parts of the rotor so as to blow the rotor to rotate; the partition convex ribs comprise extending sections extending upwards, and steam at the lower end part of the fourth steam chamber is respectively guided to the fourth steam outlet and the fifth steam outlet through the extending sections to be blown out, so that the blowing-out is more stable; the body is made of high-temperature-resistant cast steel, so that the body is not easy to deform after high-temperature steam is introduced.

Drawings

FIG. 1 is a perspective view of a steam chamber of a steam turbine according to the present invention;

FIG. 2 is a schematic structural view of a steam chamber of the steam turbine of the present invention;

FIG. 3 is a cross-sectional view of a steam chamber of a steam turbine according to the present invention;

FIG. 4 is an enlarged view of portion A of FIG. 3;

FIG. 5 is a side view of the steam chamber of the steam turbine of the present invention;

the corresponding part names for the various reference numbers in the figures are: 1 is a body, 101 is a steam inlet, 102 is a steam outlet, 103 is a first steam outlet, 104 is a second steam outlet, 105 is a third steam outlet, 106 is a fourth steam outlet, 107 is a fifth steam outlet, 108 is a partition rib, 109 is an extension section, 2 is a steam cavity group, 201 is a first steam chamber, 202 is a second steam chamber, 203 is a third steam chamber, 204 is a fourth steam chamber, 3 is a steam channel, 401 is a regulating valve mounting hole, 501 is a first rib, 502 is a second rib, and 7 is a via hole.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

Referring to fig. 1 to 5, the utility model provides a steam chamber of a steam turbine, which comprises: the steam inlet 101 is formed in the body 1 in an integrated mode, the steam inlet 101 is connected with a high-pressure steam pipeline valve, and high-pressure steam enters the body 1 from the steam inlet 101 in the horizontal direction; a steam cavity group 2 is arranged in the body 1, the steam cavity group 2 comprises a plurality of steam cavities, the shapes of the steam cavities are different, and steam entering from the steam inlet 101 is divided into the steam cavities for blowing out; the steam channel 3 communicated with the steam inlet 101 is formed in the body 1, the steam channel 3 is communicated with the upper end of the steam cavity, the steam channel 3 extends along the horizontal direction, the extending direction of the steam channel 3 is consistent with the direction of introducing steam into the steam inlet 101, and steam can conveniently enter the steam cavity along the steam channel 3; the lower end of the steam cavity is communicated with a steam outlet 102, and steam passes through the steam cavity from top to bottom; the body 1 is provided with a plurality of regulating valves for controlling the communication/blocking of the steam cavity and the steam channel 3, and the total steam outlet quantity of the steam outlet 102 is changed by changing the number of the steam cavities communicated with the steam channel 3, wherein the total steam outlet quantity is the sum of the steam outlet quantities of all the steam outlets 102; the governing valve mounting hole 401 that is used for installing the governing valve is seted up to 1 upper end of body, and governing valve mounting hole 401 runs through steam channel 3 downwards and extends to the steam chamber that corresponds, is provided with protruding muscle 5 in the steam chamber, correspond on the steam chamber protruding muscle group department, its width reduces from top to bottom, and steam from top to bottom passes through the in-process in steam chamber, and protruding muscle group 5 can inwards gather together steam, and steam blows out more concentratedly, and the steam circulation face dwindles when steam flows through protruding muscle group 5, and the steam velocity of flow increases to the rotor pivoted power is blown in the increase, raises the energy conversion efficiency, and energy utilization is rateed highly.

Referring to fig. 1, 3 and 4, the steam cavity includes a left side wall and a right side wall opposite to the left side wall, the rib group 5 includes a first rib 501 and a second rib 502 which are oppositely arranged, one end of the first rib 501 is connected with the left side wall, the other end of the first rib 501 inclines towards the lower side, and the steam blows out downwards along the upper inclined plane of the first rib 501; the one end and the right side wall of second protruding muscle 502 are connected, and the other end of second protruding muscle 502 inclines towards the downside, and steam blows out downwards along second protruding muscle 502 upper inclined plane, is equipped with two relative protruding muscle, gathers together steam inwards simultaneously for steam blows out more concentratedly. One end of the first convex rib 501, which is far away from the left side wall, extends to the steam outlet 102, and one end of the second convex rib 502, which is far away from the right side wall, extends to the steam outlet 102, so that steam blown out from the steam outlet 102 is more concentrated after flowing through the first convex rib 501 and the second convex rib 502.

Referring to fig. 1 and 3, the number of the regulating valves is the same as that of the steam cavities, the regulating valves correspond to the steam cavities one by one, the regulating valves are arranged above the steam cavities corresponding to the regulating valves, and the regulating valves control the communication/blocking of the corresponding steam cavities and the steam channels 3; a through hole 7 is arranged between the steam channel 3 and the steam cavity, and steam in the steam channel 3 enters the steam cavity through the through hole 7.

Referring to fig. 1 and 3, the steam chamber group 2 includes a first steam chamber 201, a second steam chamber 202, a third steam chamber 203 and a fourth steam chamber 204, a plurality of steam chambers are provided to connect a plurality of steam nozzles, and whether the steam nozzles inject steam is controlled by controlling the on-off of the steam chambers and the steam channels; the steam outlet 102 comprises a first steam outlet 103, a second steam outlet 104, a third steam outlet 105, a fourth steam outlet 106 and a fifth steam outlet 107, the first steam outlet 103 is communicated with the lower end of the first steam chamber 201, so that the steam in the first steam chamber 201 is discharged from the first steam outlet 103; the second steam outlet 104 is communicated with the lower end of the second steam chamber 202, so that the steam in the second steam chamber 202 is discharged from the second steam outlet 104; the third steam outlet 105 is communicated with the lower end of the third steam chamber 203, so that the steam in the third steam chamber 203 is discharged from the third steam outlet 105; the fourth steam outlet 106 and the fifth steam outlet 107 are both communicated with the lower end of the fourth steam chamber 204, a partition rib 108 is arranged between the fourth steam outlet 106 and the fifth steam outlet 107, the steam outlet at the lower end of the fourth steam chamber 204 is partitioned into the fourth steam outlet 106 and the fifth steam outlet 107 through the partition rib 108, so that steam in the fourth steam chamber 204 is simultaneously discharged from the fourth steam outlet 106 and the fifth steam outlet 107, the number of connected steam nozzles is more than that of the steam chambers, one steam outlet is correspondingly connected with one steam nozzle, a plurality of steam outlets are provided, and the problem that the number of the steam nozzles connected with the steam outlets is insufficient is solved; the steam nozzle needs to blow steam to different portions of the rotor, and therefore, a plurality of steam nozzles need to be provided. In this embodiment, the four steam chambers have five steam outlets, so that five steam nozzles can be connected, and the five steam nozzles can blow steam to different parts of the rotor, so as to blow the rotor to rotate.

Referring to fig. 1 and 3, the first steam outlet 103, the second steam outlet 104, the third steam outlet 105, the fourth steam outlet 106, and the fifth steam outlet 107 are sequentially arranged along an arc line, a center of the arc line coincides with an axis of the rotor, the rotor is disposed below the steam outlets, and steam nozzles are installed along the arc line so that the steam nozzles blow steam in a circumferential direction of the rotor to blow the rotor to rotate in a circumferential direction.

Referring to fig. 1 and 3, the blocking rib 108 includes an extending section 109 extending upward, and the steam in the lower end portion of the fourth steam chamber 204 is guided to the fourth steam outlet 106 and the fifth steam outlet 107 respectively by the extending section 109 to be blown out, so that the blowing out is more smooth. The body 1 is made of high-temperature-resistant cast steel, specifically high-temperature-resistant cast steel G17CrMoV5-10, so that the body is not easy to deform after high-temperature steam is introduced.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and embellishments can be made without departing from the technical principle of the present invention, and these improvements and embellishments should also be regarded as the protection scope of the present invention.

Claims

1. A steam chamber of a steam turbine, comprising: body (1) of integrated into one piece, body (1) is provided with into steam port (101), be provided with steam chamber group (2) in body (1), steam chamber group (2) include a plurality of steam chambeies, seted up on body (1) with steam passageway (3) of advancing steam port (101) intercommunication, steam passageway (3) with steam chamber upper end intercommunication, steam chamber lower extreme intercommunication has out steam port (102), be provided with a plurality ofly on body (1) and be used for control the steam chamber with the governing valve that steam passageway (3) intercommunication/blocked, body (1) upper end is seted up and is used for the installation governing valve mounting hole (401) of governing valve, governing valve mounting hole (401) run through downwards steam passageway (3) extend to corresponding the steam chamber, be provided with protruding muscle group (5) in the steam chamber, correspond on the steam chamber protruding muscle group department, its width reduces from top to bottom.

2. The steam turbine steam chamber as recited in claim 1, wherein the steam chamber comprises a left side wall and a right side wall opposite to the left side wall, the rib group (5) comprises a first rib (501) and a second rib (502) which are oppositely arranged, one end of the first rib (501) is connected with the left side wall, and the other end of the first rib (501) is inclined towards the lower side; one end of the second convex rib (502) is connected with the right side wall, and the other end of the second convex rib (502) inclines towards the lower side.

3. Steam turbine steam chamber according to claim 2, characterised in that the end of the first rib (501) remote from the left side wall extends to the steam outlet (102) and the end of the second rib (502) remote from the right side wall extends to the steam outlet (102).

4. Steam chamber of a steam turbine according to claim 1, characterized in that the number of regulating valves is the same as the number of steam chambers, and that a leading through (7) is provided between the steam channel (3) and the steam chambers.

5. Steam turbine steam chamber according to claim 1, characterized in that the steam chamber group (2) comprises a first steam chamber (201), a second steam chamber (202), a third steam chamber (203) and a fourth steam chamber (204), the steam outlet (102) comprises a first steam outlet (103), a second steam outlet (104), a third steam outlet (105), a fourth steam outlet (106) and a fifth steam outlet (107), the first steam outlet (103) is in communication with the lower end of the first steam chamber (201), the second steam outlet (104) is in communication with the lower end of the second steam chamber (202), the third steam outlet (105) is in communication with the lower end of the third steam chamber (203), the fourth steam outlet (106) and the fifth steam outlet (107) are both in communication with the lower end of the fourth steam chamber (204), and a blocking rib (108) is arranged between the fourth steam outlet (106) and the fifth steam outlet (107).

6. The steam turbine steam chest as claimed in claim 5 wherein the first steam outlet (103), the second steam outlet (104), the third steam outlet (105), the fourth steam outlet (106) and the fifth steam outlet (107) are arranged in sequence along a circular arc.

7. Steam turbine steam chamber according to claim 5, characterized in that the partition ribs (108) comprise upwardly extending extensions (109).

8. The steam chamber of a steam turbine as claimed in any of claims 1 to 7, characterized in that the material of the body (1) is high-temperature-resistant cast steel.