A protection device for a steam turbine

Abstract

This invention relates to the field of steam turbine technology, and in particular to a protective device for steam turbines, comprising: a support assembly including a base and support feet disposed on the end face of the base; a collection assembly including a fan and a suction plate disposed outside the fan; a protective assembly including a telescopic plate and a bottom frame and a top frame respectively disposed at both ends of the telescopic plate, wherein the outer wall of the bottom frame is fixedly screwed to the base, and the top of the top frame is designed to be open; and a top sealing assembly including a top plate disposed at the opening on the outer wall of the top frame. The protective device provided by this invention can be adjusted according to the size of each steam turbine to adapt to more steam turbines. The protective assembly provided by this device effectively utilizes the steam generated by the steam turbine, causing the telescopic plate to expand and promptly sending the steam inside the telescopic plate to the collection assembly for collection, effectively reducing energy waste and solving the problems existing in the prior art.

Description

Technical Field

[0001] This invention relates to the field of steam turbine technology, and in particular to a protection device for steam turbines. Background Technology

[0002] Currently, steam turbines are rotary power machines that convert the energy of steam into mechanical work. Also known as steam turbines, they are mainly used as prime movers for power generation. Steam turbines are the main equipment in modern thermal power plants and are also used in the metallurgical industry, chemical industry, and ship propulsion systems. Steam turbines are usually protected by steam turbine protective covers during use.

[0003] However, during the operation of steam turbines, safety protection is often required. Currently, no device has been found that can effectively utilize the steam from the steam turbine. Furthermore, the existing steam turbine protection height is fixed, and its applicable scope is somewhat limited. Summary of the Invention

[0004] In view of the problems existing in the prior art, the present invention is proposed.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a protection device for a steam turbine, comprising: a support assembly including a base and support feet disposed on the end face of the base; a collection assembly including a fan and a suction plate disposed outside the fan; a protection assembly including a telescopic plate and a bottom frame and a top frame respectively disposed at both ends of the telescopic plate, wherein the outer wall of the bottom frame is fixedly screwed to the base, and the top of the top frame is designed to be open; and a top sealing assembly including a top plate disposed at the opening on the outer wall of the top frame.

[0006] As a preferred embodiment of the protective device for steam turbines described in this invention, the collecting assembly is provided with a support member, and the support member includes sleeves respectively disposed on the inner walls of the bottom frame and the top frame; the outer wall of each sleeve is provided with two first elastic members, and one end of each first elastic member is provided with a sleeve sleeved outside the sleeve.

[0007] As a preferred embodiment of the protective device for steam turbines described in this invention, a connecting rod is movably connected between every two diagonally opposite sleeves, which makes the two connecting rods cross each other, and a connecting channel is provided through the outer wall of each connecting rod.

[0008] As a preferred embodiment of the protective device for steam turbines described in this invention, the inner wall of the base frame is screwed with a fixed frame, and the inner wall of the fixed frame is slidably provided with a bracket. Rotating columns are rotatably provided on both sides of the outer wall of the bracket, and the rotating columns are movably connected to the connecting channel.

[0009] As a preferred embodiment of the protective device for steam turbines described in this invention, the outer wall of the bracket is provided with a fixed seat, and a support column is rotatably provided inside the fixed seat, one end of the support column extending outside the fixed seat and provided with a fan blade.

[0010] As a preferred embodiment of the protective device for steam turbines described in this invention, a limiting rod is provided on the axial direction of the fan blade, and a limiting blade is provided on the end face of the limiting rod.

[0011] As a preferred embodiment of the protective device for steam turbines described in this invention, the end face of the top plate is provided with a straight groove through which the limiting rod can pass, and the end face of the top plate is provided with a fan-shaped groove that can communicate with the straight groove.

[0012] In a preferred embodiment of the protective device for a steam turbine according to the present invention, the limiting blade extends to the end face of the top plate due to the setting of the limiting rod, and the outer wall of the limiting blade is slidably connected to the sector groove.

[0013] As a preferred embodiment of the protective device for steam turbines described in this invention, the top plate has a through groove on its end face, and a sealing plate is provided in the inner cavity of the top plate, with the outer wall of the sealing plate slidably connected to the channel groove.

[0014] As a preferred embodiment of the protective device for steam turbines described in this invention, a second elastic element is provided between the sealing plate and the inner wall of the top plate, and a hook is provided at one end of the sealing plate, with one end of the hook connected to the straight groove.

[0015] The beneficial effects of the present invention are as follows: The protective device provided by the present invention can be adjusted according to the size of each steam turbine in order to adapt to more steam turbines. The protective components provided by the device effectively utilize the steam generated by the steam turbine to cause the expansion plate to expand and promptly send the steam in the expansion plate to the collection component for collection, which effectively reduces energy waste and solves the problems existing in the prior art. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 This is a cross-sectional view and enlarged schematic diagram of the telescopic plate structure and its partial structure in this invention.

[0019] Figure 3 This is a schematic diagram of the top sealing component structure in this invention.

[0020] Figure 4 This is a schematic diagram of the straight groove and through groove structure in this invention. Detailed Implementation

[0021] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0022] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0023] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0024] Example 1

[0025] Reference Figures 1-4 This is the first embodiment of the present invention. This embodiment provides a protection device for steam turbines, which can be adjusted according to the size of each steam turbine to adapt to more steam turbines. The protection component 300 provided by the device effectively utilizes the steam generated by the steam turbine to cause the expansion plate 301 to expand and promptly send the steam in the expansion plate 301 to the collection component 200 for collection, effectively reducing energy waste.

[0026] Specifically, the support assembly 100 includes a base 101 and support feet 102 located on the end face of the base 101; the collection assembly 200 includes a fan 201 and a suction plate 202 located outside the fan 201; when the fan 201 is started, the suction plate 202 will achieve a suction effect through the start of the fan 201; the protection assembly 300 includes a telescopic plate 301 and a bottom frame 301a and a top frame 301b respectively located at both ends of the telescopic plate 301, and the outer wall of the bottom frame 301a is fixedly screwed to the base 101, while the top of the top frame 301b is designed to be open; and the top sealing assembly 400 includes a top plate 401 located at the opening on the outer wall of the top frame 301b, the top sealing assembly 400 is used to seal the top frame 301b, so that the entire protection assembly 300 is in a sealed state, thereby achieving protection for the steam turbine.

[0027] The support assembly 100 supports the entire device, while the steam turbine is housed within the telescopic plate 301. The telescopic plate 301 is similar to a bellows in the prior art, but unlike a bellows, which is typically cylindrical, the telescopic plate 301 is rectangular, a shape that facilitates control over the telescopic movement of the plate.

[0028] In summary, during the protection of the steam turbine, when the turbine generates steam due to prolonged operation, the steam will cause the expansion plate 301 to expand upwards and come into contact with the suction plate 202, thus completing the recovery and utilization of the steam. When there is no steam, the expansion plate 301 will be scaled down to its minimum size as much as possible to avoid wasting space.

[0029] It should be noted that warning words are sprayed on the outer wall of the telescopic plate 301. Because the telescopic plate 301 expands due to steam, the temperature rise may also pose a potential threat to the safety of the staff. When the telescopic plate 301 expands, the warning words will appear, which will help the staff to identify and pay attention to prevent burns. At the same time, this method also makes it easier for the staff to understand the working status of the steam turbine inside the device.

[0030] Example 2

[0031] Reference Figures 1-4 This is the second embodiment of the present invention. This embodiment is based on the previous embodiment, but with the difference that it provides a more stable way for the telescopic plate 301 to extend and retract, and also enables the telescopic plate 301 to have a reset function after extension.

[0032] Specifically, the collecting component 200 includes a support member 302, which comprises sleeves 302a respectively disposed on the inner walls of the bottom frame 301a and the top frame 301b. Each sleeve 302a has two first elastic members 302a-1 on its outer wall, and one end of each first elastic member 302a-1 is fitted with a sleeve 302a-2 outside the sleeve 302a. The sleeves 302a on the bottom frame 301a are fixed, while the sleeves 302a on the inner wall of the top frame 301b will move upwards as the telescopic plate 301 "expands".

[0033] A connecting rod 302b is movably connected between each pair of diagonally opposite sleeves 302a-2, which makes the two connecting rods 302b cross each other, and a connecting channel 302b-1 is opened through the outer wall of each connecting rod 302b.

[0034] In summary, when the top frame 301b moves upward, the two sleeves 302a-2 on each sleeve 302a will get closer and closer, thus supporting the movement of the top frame 301b. The first elastic element 302a-1 is a tension spring. When the two sleeves 302a-2 on each sleeve 302a approach each other, the first elastic element 302a-1 is subjected to force until the steam disappears. The first elastic element 302a-1 restores its deformation, thereby resetting each connecting rod 302b, thus achieving the resetting effect of the telescopic plate 301.

[0035] Example 3

[0036] Reference Figures 1-4 This is the third embodiment of the present invention. This embodiment is based on the previous embodiment, but with the difference that it provides a way to avoid the expansion of the telescopic plate 301 caused by the influence of the external environment.

[0037] Specifically, a fixed frame 302c is screwed to the inner wall of the base frame 301a, and a bracket 302c-1 is slidably mounted on the inner wall of the fixed frame 302c. Rotating columns 302c-2 are rotatably mounted on both sides of the outer wall of the bracket 302c-1, and the rotating columns 302c-2 are movably connected to the connecting channel 302b-1. The fixed frame 302c is fixed to the base frame 301a and does not move on its own, while its inner wall is integrally formed with a track for the movable bracket 302c-1, providing the bracket 302c-1 with a stroke for vertical movement.

[0038] Once the bracket 302c-1 is fixed, the rotating column 302c-2 will cooperate with the connecting channel 302b-1, so that the connecting rods 302b cannot rotate, which restricts the telescopic plate 301 from "expanding".

[0039] The outer wall of the bracket 302c-1 is provided with a fixed seat 302c-3, and a support column is rotatably installed inside the fixed seat 302c-3. One end of the support column extends out of the fixed seat 302c-3 and is provided with a fan blade 302d. The fan blade 302d will rotate due to the influence of steam, and the rotation of the fan blade 302d will act as a "key" to "unlock" the support member 302.

[0040] A limiting rod 302d-1 is provided on the axial direction of the fan blade 302d, and a limiting leaf 302d-2 is provided on the end face of the limiting rod 302d-1. The limiting rod 302d-1 is used to support the limiting leaf 302d-2 to rotate with the fan blade 302d.

[0041] The top plate 401 has a through-cut straight groove 401b through which the limiting rod 302d-1 can pass, and a fan-shaped groove 401a communicating with the straight groove 401b is also provided on the end face of the top plate 401. The limiting blade 302d-2 extends to the end face of the top plate 401 due to the setting of the limiting rod 302d-1, and the outer wall of the limiting blade 302d-2 is slidably connected to the fan-shaped groove 401a. If the fan blade 302d rotates, causing the limiting blade 302d-2 to rotate to align with the straight groove 401b, the top frame 301b will be able to move in the vertical direction.

[0042] A through groove 401c is provided through the end face of the top plate 401, and a sealing plate 401c-1 is provided in the inner cavity of the top plate 401, with the outer wall of the sealing plate 401c-1 slidably connected to the through groove 401c. The sealing plate 401c-1 seals the through groove 401c, making the top plate 401 a whole.

[0043] A second elastic element is provided between the sealing plate 401c-1 and the inner wall of the top plate 401. A hook 401c-2 is provided at one end of the sealing plate 401c-1, and one end of the hook 401c-2 is connected to the straight groove 401b. When the sealing plate 401c-1 is located in the through groove 401c, the second elastic element is a tension spring and is continuously subjected to force. Once the sealing plate 401c-1 is disengaged from the through groove 401c, it will rebound into the top plate 401 under the force of the second elastic element, opening the through groove 401c and putting it in an open state.

[0044] In summary, during the protection of the steam turbine, in order to prevent the expansion plate 301 from being mistakenly "expanded" due to the influence of the external environment, in the first moment when steam is generated, it takes a certain amount of time for the steam to spread and fill the entire expansion plate 301, creating a pressure difference between the inside and outside. Before this, the steam will first come into contact with the fan blade 302d, causing the fan blade 302d to rotate.

[0045] The rotation of the fan blade 302d provides the power for the rotation of the limiting blade 302d-2, allowing the limiting blade 302d-2 to slide against the fan-shaped groove 401a. It should be noted that the fan-shaped groove 401a also limits the rotation range of the limiting blade 302d-2. When the limiting blade 302d-2 rotates to align with the straight groove 401b, the restriction on the support member 302 is released.

[0046] At this point, influenced by the steam, a pressure difference will be generated inside and outside the telescopic plate 301, causing the telescopic plate 301 to expand upwards. At this time, the limiting leaf 302d-2 will also partially enter the telescopic plate 301. That is, this step unlocks the telescopic plate 301.

[0047] It should be added that, in order to ensure that the steam can be effectively utilized, when the limiting blade 302d-2 enters the telescopic plate 301, it will push the hook 401c-2 to disengage from the straight groove 401b, so that the groove 401c is opened, ensuring that the top of the telescopic plate 301 is in an open state, and in conjunction with the suction plate 202, the steam can be recovered.

[0048] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of the invention. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structurally equivalent but also equivalent in structure. Other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments without departing from the scope of the invention. Therefore, the present invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0049] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the currently considered best mode for carrying out the invention, or those features that are not relevant to implementing the invention) may be omitted.

[0050] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0051] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A protective device for a steam turbine, characterized in that: include, The support assembly (100) includes a base (101) and support feet (102) disposed on the end face of the base (101); and, The collecting component (200) includes a fan (201) and a suction plate (202) disposed outside the fan (201); and, The protective assembly (300) includes a telescopic plate (301) and a bottom frame (301a) and a top frame (301b) respectively disposed at both ends of the telescopic plate (301), wherein the outer wall of the bottom frame (301a) is fixedly screwed to the base (101), and the top of the top frame (301b) is designed to be open; and, The top sealing assembly (400) includes a top plate (401) disposed at the opening on the outer wall of the top frame (301b). The collecting component (200) is provided with a support member (302), and the support member (302) includes a sleeve (302a) respectively disposed on the inner wall of the bottom frame (301a) and the top frame (301b); the outer wall of each sleeve (302a) is provided with two first elastic members (302a-1), and one end of each first elastic member (302a-1) is provided with a sleeve (302a-2) sleeved outside the sleeve (302a); A connecting rod (302b) is movably connected between each pair of diagonally opposite sleeves (302a-2), which makes the two connecting rods (302b) cross each other, and a connecting channel (302b-1) is provided through the outer wall of each connecting rod (302b). The inner wall of the bottom frame (301a) is screwed with a fixed frame (302c), and the inner wall of the fixed frame (302c) is slidably provided with a bracket (302c-1). The outer walls of the bracket (302c-1) are rotatably provided with rotating columns (302c-2), and the rotating columns (302c-2) are movably connected to the connecting channel (302b-1). The outer wall of the bracket (302c-1) is provided with a fixed seat (302c-3), and a support column is rotatably provided inside the fixed seat (302c-3). One end of the support column extends to the outside of the fixed seat (302c-3) and is provided with a fan blade (302d). A limiting rod (302d-1) is provided on the axial direction of the fan blade (302d), and a limiting leaf (302d-2) is provided on the end face of the limiting rod (302d-1). The top plate (401) has a through straight groove (401b) for the limit rod (302d-1) to pass through, and the top plate (401) has a fan-shaped groove (401a) communicating with the straight groove (401b). The limiting leaf (302d-2) extends to the end face of the top plate (401) due to the setting of the limiting rod (302d-1), and the outer wall of the limiting leaf (302d-2) is slidably connected to the fan-shaped groove (401a).

2. The protection device for a steam turbine as described in claim 1, characterized in that: The top plate (401) has a through groove (401c) through its end face, and a sealing plate (401c-1) is provided in the inner cavity of the top plate (401), and the outer wall of the sealing plate (401c-1) is slidably connected to the through groove (401c).

3. The protection device for a steam turbine as described in claim 2, characterized in that: A second elastic element is provided between the sealing plate (401c-1) and the inner wall of the top plate (401). A hook (401c-2) is provided at one end of the sealing plate (401c-1), and one end of the hook (401c-2) is connected to the straight groove (401b).

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