Smoke exhaust device and steam turbine barring gear
By introducing smoke exhaust pipes and cylindrical stainless steel filters into the steam turbine tray smoke exhaust device, the problems of oil mist emission and splashing are solved, efficient smoke filtration is achieved and environmental pollution is reduced, and the safety and environmental protection performance of the smoke exhaust device are improved.
Patent Information
- Application Number
- CN202421982782.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-15
- Publication Date
- 2025-07-08
- Estimated Expiration
- 2034-08-15
AI Technical Summary
The existing steam turbine tray smoke exhaust device is relatively large when the unit is running, and is accompanied by a large amount of oil splash, causing safety hazards and environmental pollution.
A smoke exhaust device including a smoke exhaust pipe and a filter piece is designed. The smoke exhaust pipe is connected to the steam turbine wheel. The filter piece is installed in the smoke exhaust pipe to filter the oil in the smoke. The smoke exhaust pipe uses high-temperature and corrosion-resistant materials. The filter piece is a cylindrical stainless steel filter with a mesh diameter of 0.4cm
Effectively filter out oil quality in smoke, reduce oil splash and oil accumulation, reduce damage to turbine wheels and environmental pollution, and improve smoke exhaust efficiency and safety.
Smart Images
Figure CN223069258U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of steam turbine turning gear smoke exhaust, in particular to a smoke exhaust device and a steam turbine turning gear. Background Art
[0002] With the popularization of the environmental protection concept and the intensification of the energy crisis, the low-temperature waste heat power generation technology of glass furnaces has attracted more and more attention from the whole society. It not only brings very rich returns to glass enterprises, but also plays an important role in energy conservation and emission reduction and improving the comprehensive energy utilization efficiency of the whole society. In the production process of power generation from glass furnace tail gas, the turning gear of the steam turbine generator is one of the indispensable important devices.
[0003] However, during the operation of the unit, the existing smoke exhaust device of the steam turbine turning gear has a large amount of oil mist emissions, and at the same time, a large amount of oil splashes out, which poses great potential safety hazards and environmental protection impacts on the operation of the unit. Summary of the Utility Model
[0004] The main purpose of the utility model is to propose a smoke exhaust device, aiming to solve the problems that the existing smoke exhaust device causes certain damage to the steam turbine structure itself and environmental pollution due to the emission of a large amount of oil mist and the splashing of a large amount of oil from the smoke exhaust port during the smoke exhaust process.
[0005] To achieve the above object, the utility model proposes a smoke exhaust device, including:
[0006] A smoke exhaust pipe, one end of which is used to connect with the steam turbine turning gear, and the other end extends along the direction away from the steam turbine turning gear; and
[0007] A filter element; the filter element is installed in the smoke exhaust pipe and is in contact with the inner wall surface of the smoke exhaust pipe in the circumferential direction.
[0008] In an embodiment, the filter element is of a cylindrical structure, the filter element is inserted into the smoke exhaust pipe, and is in interference fit with the inside of the smoke exhaust pipe.
[0009] In an embodiment, the filter element is formed by winding a stainless steel filter mesh, and the mesh diameter of the stainless steel filter mesh is d, where 0.4 cm < d < 0.6 cm;
[0010] And / or, the filter element is inserted at one end of the smoke exhaust pipe close to the steam turbine turning gear.
[0011] In an embodiment, the height of the smoke exhaust pipe is i, where 95 cm < i < 105 cm.
[0012] In one embodiment, the smoke exhaust device further includes a first flange, which is used for detachably installing on the turning gear of the steam turbine. A first through hole is formed in the center of the first flange, and one end of the smoke exhaust pipe is connected to the edge of the first through hole.
[0013] In one embodiment, the smoke exhaust device further includes a second flange and a smoke exhaust assembly. A second through hole is formed in the center of the second flange. The second flange is installed on the other end of the smoke exhaust pipe through the second through hole. The smoke exhaust assembly is installed on the side of the second flange facing away from the smoke exhaust pipe. The smoke exhaust assembly has a smoke exhaust state and a closed state. When the smoke exhaust assembly is in the smoke exhaust state, a smoke exhaust gap communicating with the inside of the smoke exhaust pipe is formed in the circumferential direction of the smoke exhaust assembly.
[0014] In one embodiment, the smoke exhaust assembly includes:
[0015] A smoke exhaust seat, which is installed on the second flange and communicates with the inside of the smoke exhaust pipe; a cap, which is movably inserted into the smoke exhaust seat; and
[0016] An elastic connecting member, one end of which is connected to the inner side wall of the smoke exhaust seat, and the other end is connected to the side of the cap facing the smoke exhaust seat;
[0017] When the smoke exhaust assembly is in the smoke exhaust state, the cap is separated from the opening of the smoke exhaust seat facing away from the smoke exhaust pipe, forming the smoke exhaust gap. When the smoke exhaust device is in the closed state, the cap fits with the opening of the smoke exhaust seat facing away from the smoke exhaust pipe.
[0018] In one embodiment, the smoke exhaust device further includes a fastener. A relief groove is formed by the circumferential side of the smoke exhaust seat recessing towards its center. A first mounting hole is formed in the groove wall of the relief groove close to the second flange, and a second mounting hole is correspondingly formed in the second flange. The fastener sequentially passes through the second mounting hole and the first mounting hole to threadedly connect the smoke exhaust seat and the second flange, and the protruding end of the fastener is located in the relief groove.
[0019] The present utility model also proposes a turning gear of a steam turbine, which includes a turning gear main body and a smoke exhaust device. The smoke exhaust device is installed on the turning gear main body, and the smoke exhaust device is the smoke exhaust device as described above.
[0020] In one embodiment, the turning gear of the steam turbine includes a plurality of the smoke exhaust devices, and the plurality of smoke exhaust devices are installed on the turning gear main body at intervals and communicate with the inside of the turning gear main body.
[0021] The present utility model provides a smoke exhaust device, which includes a smoke exhaust pipe and a filter element. The smoke exhaust pipe is fixedly connected to the turbine turning gear. A filter element is also installed at one end of the smoke exhaust pipe connected to the turbine turning gear. When the smoke exhaust device exhausts smoke, the smoke generated by the turbine turning gear first passes through the filter element in the smoke exhaust pipe for filtration to filter out the oil contained in the smoke, and then is discharged through the smoke exhaust pipe, eliminating the phenomena of a large amount of oil splashing and oil and fog accumulation during smoke exhaust, thereby reducing the damage to the turbine turning gear itself and environmental pollution. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the structures shown in these drawings.
[0023] Figure 1 It is a schematic structural diagram of an embodiment of the smoke exhaust device of the present utility model;
[0024] Figure 2 For Figure 1 a cross-sectional view of the smoke exhaust device in
[0025] Figure 3 For Figure 2 an enlarged schematic view of part A in
[0026] Description of the reference numerals in the drawings:
[0027] 1 Smoke exhaust device 50 Smoke exhaust component 10 Smoke exhaust pipe 51 Smoke exhaust gap 20 Filter element 52 Smoke exhaust seat 30 First flange 521 Avoidance groove 31 First through hole 522 First mounting hole 40 Second flange 53 Cap 41 Second through hole 54 Spring 42 Second mounting hole 60 Fastener
[0028] The realization of the object, functional characteristics and advantages of the present utility model will be further described in conjunction with the embodiments and with reference to the drawings. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.
[0030] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present utility model, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.
[0031] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present utility model, such descriptions of "first", "second", etc. are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.
[0032] With the popularization of the environmental protection concept and the intensification of the energy crisis, the low-temperature waste heat power generation technology of glass furnaces has attracted more and more attention from the whole society. It not only brings very rich returns to glass enterprises, but also plays an important role in energy conservation, emission reduction, and improving the overall energy utilization efficiency of the whole society. In the production process of power generation from the exhaust gas of glass furnaces, the barring gear device of the steam turbine generator is one of the indispensable important devices. However, in the existing smoke exhaust device of the steam turbine barring gear, the oil mist emission is relatively large during the operation of the unit, and at the same time, a large amount of oil splashes out, which poses a great potential safety hazard and environmental impact on the operation of the unit.
[0033] To solve the above problems, the present utility model proposes a smoke exhaust device 1, which includes a smoke exhaust pipe 10 and a filter element 20. The smoke exhaust pipe 10 is fixedly connected to the steam turbine barring gear. A filter element 20 is also installed at one end of the smoke exhaust pipe 10 connected to the steam turbine barring gear. When the smoke exhaust device 1 exhausts smoke, the smoke generated by the steam turbine barring gear is first filtered by the filter element 20 in the smoke exhaust pipe 10 to filter out the oil contained in the smoke, and then discharged through the smoke exhaust pipe 10, eliminating the phenomena of a large amount of oil splashing and oil accumulation and fog accumulation during smoke exhaust, thereby reducing the damage to the steam turbine barring gear itself and environmental pollution.
[0034] As Figure 1 and Figure 2 , in an embodiment, the smoke exhaust device 1 includes a smoke exhaust pipe 10 and a filter element 20. One end of the smoke exhaust pipe 10 is used for connecting to the steam turbine barring gear, and the other end extends in a direction away from the steam turbine barring gear. The filter element 20 is installed in the smoke exhaust pipe 10 and is in contact with the inner wall surface of the smoke exhaust pipe 10 in the circumferential direction.
[0035] In this embodiment, the exhaust pipe 10 is made of heat-resistant and corrosion-resistant materials to adapt to the high-temperature flue gas generated during the operation of the steam turbine, such as stainless steel or other alloy steels. One end of the exhaust pipe 10 close to the steam turbine turning gear is tightly connected to the steam turbine turning gear to prevent flue gas from overflowing from the connection between the exhaust pipe 10 and the steam turbine turning gear, thereby causing environmental pollution. The setting of the exhaust pipe 10 enhances the self-aspiration force of the exhaust device 1 for the flue gas, improves the exhaust efficiency of the exhaust device 1, and also avoids the influence of flue gas backflow and smoke on the staff.
[0036] The setting of the filter element 20 can capture the oil impurities doped in the flue gas, prevent a large amount of oil mist from being generated when the exhaust pipe 10 discharges smoke, and cause environmental pollution. At the same time, the filter element 20 is installed inside the exhaust pipe 10 and abuts against the inner wall of the exhaust pipe 10 in all directions, further improving the filtering effect, and thus improving the exhaust quality of the exhaust device 1.
[0037] The present utility model provides an exhaust device 1, which includes an exhaust pipe 10 and a filter element 20. The exhaust pipe 10 is tightly connected to the steam turbine turning gear to prevent flue gas from overflowing from the connection. A filter element 20 is also installed at one end of the exhaust pipe 10 connected to the steam turbine turning gear. When the exhaust device 1 discharges smoke, the smoke generated by the steam turbine turning gear first passes through the filter element 20 inside the exhaust pipe 10 for filtration, filtering out the oil impurities mixed in the smoke, and then discharged through the exhaust pipe 10, eliminating phenomena such as a large amount of oil splashing and oil accumulation and fog accumulation during exhaust, thereby reducing the damage to the steam turbine turning gear itself and environmental pollution.
[0038] As Figure 2 , in one embodiment, the filter element 20 is of a cylindrical structure, and the filter element 20 is inserted into the exhaust pipe 10 and is in interference fit with the inside of the exhaust pipe 10.
[0039] In this embodiment, the filter element 20 adopts a cylindrical structure, which is adapted to the shape of the internal space of the exhaust pipe 10 to ensure that the filter element 20 can be stably installed inside the exhaust pipe 10. Moreover, due to the certain height of the cylindrical structure itself, compared with the commonly used single-layer filter screen in the prior art, the filter element 20 in this embodiment can achieve multi-layer filtration, further improving the filtering effect. And setting the filter element 20 as a cylindrical structure can store the filtered oil impurities in the structure of the filter element 20 itself, preventing the filtered oil impurities from falling back into the inside of the steam turbine turning gear and damaging the internal structure of the turning gear. In addition, the filter element 20 is installed inside the exhaust pipe 10 in an inserted manner, which is convenient for regular inspection, cleaning or replacement to maintain the long-term efficient operation of the exhaust device 1, further improving the practicability of the exhaust device 1. In other embodiments, the filter element 20 can adopt a spherical structure and be inserted into the exhaust pipe 10.
[0040] As Figure 2, in one embodiment, the filter element 20 is formed by winding a stainless-steel filter net, and the mesh diameter of the stainless-steel filter net is d, where 0.4 cm < d < 0.6 cm;
[0041] And / or, the filter element 20 is inserted into one end of the exhaust pipe 10 close to the turbine turning gear.
[0042] In this embodiment, a cylindrical structure formed by winding a stainless-steel filter net is used as the filter element 20. The stainless-steel material not only ensures the corrosion resistance and high-temperature resistance of the filter element 20, but also, due to its own high-strength characteristics, enables the filter element 20 to have a long service life.
[0043] Since the smoke generated by the turbine turning gear needs to pass through the mesh holes of the filter element 20 and then be discharged from the top of the exhaust pipe 10, in order to ensure that the smoke exhaust device 1 can discharge smoke smoothly, the mesh diameter of the filter element 20 should not be too small; at the same time, the mesh diameter of the filter element 20 should not be too large either, otherwise the oil contained in the smoke will leak out from the mesh holes of the filter element 20, thereby reducing the filtering effect of the filter element 20; therefore, the range of the mesh diameter d of the filter element 20 is set to 0.4 cm < d < 0.6 cm. For example, d can take values such as 0.45 cm, 0.5 cm, 0.55 cm, etc. At this time, the filter element 20 can not only ensure smooth smoke discharge, but also achieve a good filtering effect, greatly improving the practicality of the filter element 20. In addition, the diameters of the multiple mesh holes of the filter element 20 can be the same value or a combination of multiple diameters, which is not limited here.
[0044] On the basis of having or not having the above embodiment, the filter element 20 is inserted into one end of the exhaust pipe 10 close to the turbine turning gear. This installation method helps to filter at the initial stage when the flue gas enters the exhaust pipe 10, thereby reducing the pollution to the far end of the exhaust pipe 10 and the external environment.
[0045] Such as Figure 2 , in one embodiment, the height of the exhaust pipe 10 is i, where 95 cm < i < 105 cm.
[0046] In this embodiment, in order to prevent a large amount of oil from splashing out while the exhaust pipe 10 discharges smoke, the height of the exhaust pipe 10 should not be too low; at the same time, in order to ensure the installation stability of the overall structure of the smoke exhaust device 1 and the production and maintenance costs, the height of the exhaust pipe 10 should not be too high either; therefore, the height range i of the exhaust pipe 10 is set to 95 cm < i < 105 cm. For example, i can take values such as 97 cm, 99 cm, 101 cm, etc. At this time, the exhaust pipe 10 can not only ensure that the discharged smoke does not contain a large amount of oil, but also ensure the installation stability of the smoke exhaust device 1, so as to facilitate the staff to maintain and repair the exhaust pipe 10.
[0047] In addition, in the above embodiment, in order to further improve the smoke exhaust effect of the smoke exhaust device 1 and reduce operating costs, the height ratio of the filter element 20 and the smoke exhaust pipe 10 can be set to j, where 1 / 10≤j≤1 / 9, for example, j can be 1 / 10, 1 / 9, etc. At this time, the smoke exhaust device 1 can not only ensure a good filtering effect on the oil in the smoke, but also avoid the waste of production materials, and is more practical.
[0048] like Figure 1 and Figure 2 In one embodiment, the smoke exhaust device 1 also includes a first flange 30, which is used to be detachably installed on the turbine cranking gear. A first through hole 31 is opened in the center of the first flange 30, and one end of the smoke exhaust pipe 10 is connected to the edge of the first through hole 31.
[0049] In this embodiment, the first flange 30 can be made of stainless steel or alloy steel to ensure that it has the characteristics of high strength, high temperature resistance and corrosion resistance. The first through hole 31 is connected to the interior of the smoke exhaust pipe 10. The connection between the first flange 30 and the smoke exhaust pipe 10 can be made by integrated design or welding to ensure the sealing between the two and prevent smoke leakage. The first flange 30 and the turbine turning gear adopt a detachable installation method, such as bolt connection or key connection, to ensure the installation stability between the smoke exhaust device 1 and the turbine turning gear while facilitating the installation, maintenance and replacement of the smoke exhaust device 1, thereby improving the flexibility and maintenance convenience of the smoke exhaust device 1. In other embodiments, a sealing gasket can also be set between the first flange 30 and the turbine turning gear to further ensure the sealing of the connection and reduce smoke escape.
[0050] like Figures 1 to 3 In one embodiment, the smoke exhaust device 1 also includes a second flange 40 and a smoke exhaust assembly 50. The second flange 40 is provided with a second through hole 41 in the center. The second flange 40 is installed on the other end of the smoke exhaust pipe 10 through the second through hole 41. The smoke exhaust assembly 50 is installed on the side of the second flange 40 away from the smoke exhaust pipe 10. The smoke exhaust assembly 50 has a smoke exhaust state and a closed state. When the smoke exhaust assembly 50 is in the smoke exhaust state, the smoke exhaust assembly 50 is circumferentially formed with a smoke exhaust gap 51 connected to the smoke exhaust pipe 10.
[0051] In this embodiment, in order to further improve the smoke exhaust effect of the smoke exhaust device 1, the smoke exhaust device 1 is further provided with a smoke exhaust assembly 50. The smoke exhaust assembly 50 is installed at the smoke outlet end of the smoke exhaust pipe 10 through a second flange 40. The second through hole 41 of the second flange 40 is communicated with the inside of the smoke exhaust pipe 10. The connection mode between the second flange 40 and the smoke outlet end above the smoke exhaust pipe 10 can be integrally designed and manufactured or welded to ensure the sealing between the two and prevent smoke leakage. A detachable installation method is adopted between the smoke exhaust assembly 50 and the second flange 40, such as bolt connection or key connection, which not only ensures the installation stability between the smoke exhaust assembly 50 and the second flange 40, but also facilitates the installation, maintenance and replacement of the smoke exhaust assembly 50, improving the flexibility of the smoke exhaust assembly 50 and the convenience of maintenance. The smoke exhaust assembly 50 has two working modes: a smoke exhaust state and a closed state. When the smoke exhaust assembly 50 is in the smoke exhaust state, a smoke exhaust gap 51 communicating with the inside of the smoke exhaust pipe 10 is formed in its circumference. The design of these gaps ensures the effective discharge of smoke, and at the same time controls the discharge direction and speed of the smoke. When the smoke exhaust assembly 50 is in the closed state, a closed space is formed above the smoke exhaust device 1 to prevent external impurities from entering the inside of the smoke exhaust pipe 10 and causing pollution when the smoke exhaust device 1 is in a standby working state. By introducing the second flange 40 and the smoke exhaust assembly 50 with a dual-state function in this embodiment, not only flexible smoke exhaust control is provided for the smoke exhaust device 1, but also the safety and environmental adaptability of the smoke exhaust device 1 are enhanced, having significant application value and market potential.
[0052] Such as Figure 1 and Figure 3 , in one embodiment, the smoke exhaust assembly 50 includes a smoke exhaust seat 52, a cap 53 and an elastic connecting piece. The smoke exhaust seat 52 is installed on the second flange 40 and communicated with the inside of the smoke exhaust pipe 10. The cap 53 is movably inserted into the smoke exhaust seat 52. One end of the elastic connecting piece is connected to the inner side wall of the smoke exhaust seat 52, and the other end is connected to the side of the cap 53 facing the smoke exhaust seat 52. When the smoke exhaust assembly 50 is in the smoke exhaust state, the cap 53 is separated from the opening of the smoke exhaust seat 52 facing away from the smoke exhaust pipe 10 to form a smoke exhaust gap. When the smoke exhaust device 1 is in the closed state, the cap 53 fits with the opening of the smoke exhaust seat 52 facing away from the smoke exhaust pipe 10.
[0053] In this embodiment, the smoke exhaust assembly 50 is composed of a smoke exhaust base 52, a cap 53 and an elastic connecting member, forming an adjustable smoke exhaust system. The smoke exhaust base 52 is fixedly installed on the second flange 40 and serves as the base of the smoke exhaust assembly 50, providing support and positioning for the cap 53. The cap 53 is designed to be movably inserted onto the smoke exhaust base 52 and can be separated or fitted according to the need for smoke exhaust. When the smoke exhaust device 1 exhausts smoke, the cap 53 is separated from the smoke exhaust base 52, forming a circumferential smoke exhaust gap 51 to allow the smoke to escape. When the smoke exhaust device 1 stops exhausting smoke, the cap 53 fits with the smoke exhaust base 52 to close the smoke exhaust gap 51 and prevent the smoke from escaping. The elastic connecting member controls the separation or fitting between the cap 53 and the smoke exhaust base 52 to ensure that the smoke exhaust assembly 50 can flexibly switch states as needed. In this embodiment, the elastic connecting member is a spring 54. A convex portion made of a soft material is installed at the lower end of the cap 53, and a clamping groove is correspondingly formed on the smoke exhaust base 52. When the cap 53 fits with the smoke exhaust base 52, the convex portion is engaged with the clamping groove, and the spring 54 is in a compressed state. When the smoke exhaust device 1 is ready to exhaust smoke, the cap 53 is pulled upward, and the cap 53 pops upward through the elastic action of the spring 54, and the convex portion is separated from the clamping groove, so that a smoke exhaust gap 51 is formed between the cap 53 and the smoke exhaust base 52. In other embodiments, the connection manner between the cap 53 and the smoke exhaust base 52 can also adopt a threaded connection. When the smoke exhaust device 1 exhausts smoke, the cap 53 and the smoke exhaust base 52 are loosened, and then the smoke exhaust gap 51 is formed to allow the smoke to escape.
[0054] As Figure 1 and Figure 3 , in one embodiment, the smoke exhaust device 1 further includes a fastener 60. A relief groove 521 is formed by the circumferential side of the smoke exhaust base 52 recessing towards its center. A first mounting hole 522 is formed in the groove wall of the relief groove 521 close to the second flange 40, and a second mounting hole 42 is correspondingly formed in the second flange 40. The fastener 60 sequentially passes through the second mounting hole 42 and the first mounting hole 522 to threadedly connect the smoke exhaust base 52 and the second flange 40, and the protruding end of the fastener is located in the relief groove 521.
[0055] In this embodiment, the fastener 60 can be a bolt or a nut. The fastener 60 sequentially passes through the second mounting hole 42 and the first mounting hole 522 to fixedly connect the smoke exhaust base 52 and the second flange 40, ensuring the installation stability and sealing performance between the two, and at the same time facilitating disassembly and replacement, improving the practicability of the smoke exhaust device 1. A relief groove 521 is formed circumferentially on the smoke exhaust base 52, and the protruding end of the fastener 60 is located in the relief groove 521. The design of the relief groove 521 provides an installation space for the fastener 60, preventing the protruding end of the fastener 60 from damaging or interfering with the smoke exhaust base 52, and at the same time avoiding affecting the structural integrity of the smoke exhaust base 52.
[0056] The present utility model further provides a turning gear for a steam turbine (not shown). The turning gear for the steam turbine includes a turning gear main body and an exhaust gas device 1. A multi-stage gear and a transmission shaft are arranged inside the turning gear main body, and an exhaust gas port is formed in the outer shell. The exhaust gas device 1 is installed at the exhaust gas port. The specific structure of the exhaust gas device 1 refers to the above-mentioned embodiments. Since the exhaust gas device 1 adopts all the technical solutions of the above-mentioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, and will not be elaborated herein one by one.
[0057] In a specific embodiment, the turning gear for the steam turbine includes a plurality of exhaust gas devices 1 (not shown). The plurality of exhaust gas devices 1 are installed on the turning gear main body at intervals and communicate with the inside of the turning gear main body to achieve a wider range of flue gas absorption and a more efficient exhaust gas effect. Each exhaust gas device 1 can either work independently or be coordinated with other devices to adapt to different exhaust gas strategies and operating conditions. Moreover, the maintenance and replacement of a single exhaust gas device 1 will not affect the operation of other exhaust gas devices 1, thereby improving the reliability of the entire system.
[0058] The above is only an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformation made under the technical concept of the present utility model by using the content of the specification and drawings of the present utility model, or direct / indirect application in other related technical fields, is included in the patent protection scope of the present utility model.
Claims
1. A smoke extraction device is applied to the turning gear of a steam turbine, characterized in that The smoke exhaust device comprises: a smoke exhaust pipe, one end of which is used to be connected to the turbine turning gear, and the other end of which is extended in a direction away from the turbine turning gear; and Filter element; the filter element is installed in the exhaust pipe and abuts against the inner wall surface of the exhaust pipe in the circumferential direction.
2. The smoke exhaust device according to claim 1, characterized in that, The filter element is a cylindrical structure, and the filter element is inserted into the smoke exhaust pipe and has an interference fit with the interior of the smoke exhaust pipe.
3. The smoke exhaust device according to claim 2, characterized in that, The filter element is formed by winding a stainless steel filter mesh, and the mesh diameter of the stainless steel filter mesh is d, wherein 0.4 cm <d<0.6cm; And / or, the filter element is inserted into one end of the smoke exhaust pipe close to the turbine turning gear.
4. The smoke exhaust device according to claim 1, wherein, The height of the exhaust pipe is i, where 95 cm <i<105cm。 5. The smoke exhaust device according to any one of claims 1 to 4, characterized in that, The smoke exhaust device also includes a first flange, which is used for detachable installation on the turbine cranking gear. A first through hole is opened in the center of the first flange, and one end of the smoke exhaust pipe is connected to the edge of the first through hole.
6. The smoke exhaust device according to any one of claims 1 to 4, characterized in that, The smoke exhaust device also includes a second flange and a smoke exhaust assembly. A second through hole is opened in the center of the second flange. The second flange is installed on the other end of the smoke exhaust pipe through the second through hole. The smoke exhaust assembly is installed on the side of the second flange away from the smoke exhaust pipe. The smoke exhaust assembly has a smoke exhaust state and a closed state. When the smoke exhaust assembly is in the smoke exhaust state, a smoke exhaust gap connected to the smoke exhaust pipe is formed in the circumferential direction of the smoke exhaust assembly.
7. The smoke exhaust device according to claim 6, characterized in that, The smoke exhaust assembly comprises: a smoke exhaust seat, the smoke exhaust seat being mounted on the second flange and being in communication with the interior of the smoke exhaust pipe; A cap, the cap being movably inserted into the smoke exhaust seat; and An elastic connecting member, one end of which is connected to the inner wall of the smoke exhaust seat, and the other end of which is connected to a side of the cap facing the smoke exhaust seat; When the smoke exhaust assembly is in the smoke exhaust state, the cap and the smoke exhaust seat are separated from the opening of the smoke exhaust pipe to form the smoke exhaust gap; when the smoke exhaust device is in the closed state, the cap and the smoke exhaust seat are fitted with the opening of the smoke exhaust pipe.
8. The smoke exhaust device according to claim 7, characterized in that, The smoke exhaust device also includes a fastener, and the circumferential side of the smoke exhaust seat is recessed toward the center thereof to form an avoidance groove, and the groove wall of the avoidance groove near the second flange is provided with a first mounting hole, and the second flange is correspondingly provided with a second mounting hole, and the fastener passes through the second mounting hole and the first mounting hole in sequence to thread the smoke exhaust seat and the second flange, and the protruding end of the fastener is located in the avoidance groove.
9. A turning gear for a steam turbine, characterized in that, The turbine turning gear comprises a turning gear body and a smoke exhaust device, wherein the smoke exhaust device is installed on the turning gear body, and the smoke exhaust device is the smoke exhaust device as claimed in any one of claims 1 to 8.
10. The turning gear of steam turbine according to claim 9, characterized in that, The turbine turning gear comprises a plurality of the smoke exhaust devices, which are installed at intervals on the turning gear body and communicated with the interior of the turning gear body.