Guide vane outer shaft neck sealing device of long-life bulb tubular turbine unit

Abstract

The application discloses a guide vane outer shaft neck sealing device of a long-life bulb tubular turbine unit, which comprises a guide vane waterproof unit, a runner waterproof unit and a unit body. The guide vane waterproof unit comprises a first connecting block, a plurality of first waterproof mechanisms are arranged on the side surface of the first connecting block, a guide vane is arranged on one side of the first waterproof mechanism, a first ring gear is arranged at one end of the first connecting block, and a second ring gear is fixedly connected to one side of the first ring gear. The runner waterproof unit comprises a worm, a runner is arranged at one end of the worm, and a fan blade is fixedly connected to the side surface of the runner. The unit body comprises an outer cabin, a support is fixedly connected to the inner wall of the outer cabin, a connecting shaft is rotatably connected to one end of the support, and a generator is fixedly connected to the side of the connecting shaft close to the support. The air tightness of the device is improved, the frequency of maintenance is greatly reduced, the device is convenient to use, is economical and practical, the power production cost can be greatly reduced, and the power generation benefit is improved.

Description

Technical Field

[0001] This invention relates to the field of bulb-type turbine units, and more particularly to a guide vane outer journal sealing device for a long-life bulb-type turbine unit. Background Technology

[0002] Water leakage from the guide vane outer journal seal is a common defect in bulb turbine units. This leakage increases humidity within the plant, accelerates corrosion of various mechanical and electrical equipment, and threatens the safe operation of equipment in the corridor layer. The annual expenditure of manpower, resources, and time on addressing this leakage is enormous. The common method for sealing the guide vane outer journal of bulb turbine units involves using a wear-resistant ring and a Yx-type or O-type seal on the inner side of the guide vane bearing.

[0003] This sealing method has several drawbacks: 1. The sealing capacity is relatively weak, and there is a high probability of leakage after 1 to 2 years of operation; 2. It is difficult to replace the sealing components. To deal with leakage and replace the seal, it is necessary to shut down the machine, lower the door to drain the water, and disassemble components such as the guide vane crank arm, connecting rod, guide vane bearing, and bearing sleeve. The maintenance and repair costs are relatively high, and the repair period is about seven days.

[0004] Domestic solutions for leak repair and modification generally only involve localized sealing enhancements, such as adding an extra seal, using a combination of Y-type and O-type seals, or two O-type seals. Nationwide surveys show that these localized sealing enhancements only prolong the time before leaks reappear, with limited effectiveness; leaks typically reappear every 1-4 years. Repairing leaks still requires shutting down the machine, lowering the drain valve, and disassembling components such as the guide vane crank arm, connecting rod, guide vane bearing, and bearing sleeve, resulting in significant maintenance and repair costs.

[0005] Another approach is to ignore the leakage from the outer journal of the guide vane and simply install a drainage channel. However, this method will only cause the leakage to increase, eventually requiring further treatment when the drainage channel diameter is insufficient. Moreover, the resulting siltation can lead to bearing wear and guide vane jamming, making it a less recommended solution. Summary of the Invention

[0006] The purpose of this section is to outline some aspects of the embodiments of the present invention and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section, as well as in the abstract and title of the present application, to avoid obscuring the purpose of this section, the abstract and title of the invention. Such simplifications or omissions shall not be used to limit the scope of the present invention.

[0007] In view of the problems existing in the above and / or prior art, the present invention is proposed.

[0008] Therefore, the technical problem to be solved by this invention is to address several common issues with the outer journal seal of the guide vanes in domestic bulb-type turbine units: 1. Weak sealing capacity; 2. Difficulty in replacing and disassembling the seal; 3. High maintenance and repair costs. This invention, by reconstructing the seal, enhances sealing capacity, reduces the need for disassembling components to address seal defects, extends seal life, improves power generation efficiency, and reduces power production costs while ensuring safe production of bulb-type turbine units.

[0009] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a guide vane outer journal sealing device for a long-life bulb-type turbine unit, comprising,

[0010] A guide vane waterproofing unit includes a first connecting block, a first waterproofing mechanism is arranged in a circumferential array on the side of the first connecting block, and a guide vane is arranged on one side of the first waterproofing mechanism. A first ring gear is arranged at one end of the first connecting block, and a second ring gear is connected to one side of the first ring gear.

[0011] A rotating waterproof unit is disposed on one side of the guide vane waterproof unit. The rotating waterproof unit includes a worm gear, one end of which is provided with a rotating wheel, and the side of the rotating wheel is uniformly provided with fan blades along the circumference; and,

[0012] The generator unit is located on the other side of the guide vane waterproof unit. The generator unit includes an outer cabin, and a bracket is provided on the inner wall of the outer cabin. One end of the bracket is rotatably connected to a connecting shaft, and a generator is connected to the side of the connecting shaft near the bracket.

[0013] As an improvement of the present invention, the first waterproof mechanism includes a guide vane bearing sleeve, which is connected to the side of the first connecting block 103. A bearing sleeve is fixedly fitted inside the guide vane bearing sleeve, and a bearing ball is rotatably connected inside the bearing sleeve. The height of the bearing sleeve and the bearing ball are matched, and the lowest point of the bearing sleeve is higher than the lowest point of the guide vane bearing sleeve. A rotating shaft is fixedly connected inside the bearing ball.

[0014] As an improvement of the present invention, a wear-resistant ring is movably connected to the bottom of the bearing balls in the guide vane bearing sleeve, and the wear-resistant ring is movably sleeved on the rotating shaft. The top of the wear-resistant ring is in contact with the bearing balls. A flat pressure lubrication and cleaning water channel is provided inside the guide vane bearing sleeve. One end of the flat pressure lubrication and cleaning water channel is located at the top of one side of the guide vane bearing sleeve, and the other end passes through the bottom of the inner side of the guide vane bearing sleeve and reaches the outer side of the wear-resistant ring. A first plug is inserted into the end of the flat pressure lubrication and cleaning water channel located on the outer side of the guide vane bearing sleeve.

[0015] As an improvement of the present invention, a grease filling channel is provided on one side of the guide vane bearing sleeve perpendicular to the flat pressure lubrication and cleaning water channel. One end of the grease filling channel is located at the top of one side of the guide vane bearing sleeve, and the other end passes through the inner bottom of the guide vane bearing sleeve and reaches the outer side of the wear ring. A grease discharge channel is provided on the other side of the guide vane bearing sleeve located on the grease filling channel. The structure of the grease discharge channel is the same as that of the grease filling channel. A second plug is inserted into one end of the grease filling channel and the grease discharge channel located on the outer side of the guide vane bearing sleeve. The grease filling channel and the grease discharge channel are on the same plane. The flat pressure lubrication and cleaning water channel is perpendicular to the plane of the grease filling channel and the grease discharge channel.

[0016] As an improvement of the present invention, a bearing cover is bolted to the top of the guide vane bearing sleeve, and a spacer ring is provided inside the bearing cover. The spacer ring is movably sleeved on the outside of the rotating shaft. An O-ring is provided between the spacer ring and the rotating shaft. YX sealing rings and O-rings are provided vertically distributed between the bearing cover and the spacer ring. An O-ring is provided between the bearing cover and the guide vane bearing sleeve. An O-ring is provided between the guide vane bearing sleeve and the first connecting block and between the guide vane bearing sleeve and the wear ring. A YX sealing ring is provided above the O-ring between the guide vane bearing sleeve and the wear ring. An O-ring is provided between the wear ring and the rotating shaft.

[0017] As an improvement of the present invention, guide vanes and cylindrical gears are respectively connected to the two ends of the rotating shaft. The teeth of the second ring gear are located on the end face. The second ring gear and the cylindrical gear mesh with each other. The second ring gear is rotatably connected to the side of the first connecting block. The teeth of the first ring gear are located on the side. A rack is meshed with the top of the first ring gear. A hydraulic rod is fixedly connected to one end of the rack, and the other end of the hydraulic rod is fixedly connected to the inner wall of the outer cabin.

[0018] As an improvement of the present invention, one end of the worm gear is fixedly connected to a second connecting block, and the other end of the second connecting block is fixedly connected to one end of the rotating wheel. The axial outer surface of the second connecting block is uniformly provided with guide holes along the circumference. The other end of the worm gear is connected to a connecting post. A fixing ring is rotatably connected to the periphery of the connecting post, and the fixing ring is fixedly connected to the inner wall of the outer cabin. The other end of the connecting post is fixedly connected to one end of the connecting shaft.

[0019] As an improvement of the present invention, the end face of the rotating wheel is uniformly provided with circular holes along the circumference, and a one-way valve is provided inside the circular holes. The one-way valve includes an outer sleeve, which is connected to the inside of the circular holes. A connecting plate is fixedly connected to one end of the outer sleeve, and water passage holes are uniformly provided on the connecting plate. A spring is connected to the connecting plate inside the outer sleeve, and a plunger is connected to the other end of the spring. The plunger is frustum-shaped, and the diameter of the contact surface between the plunger and the spring is smaller than the diameter of the other surface. One end of the outer sleeve is adapted to the plunger.

[0020] As an improvement of the present invention, the outer cabin is bulb-shaped, the first connecting block, connecting column, fixing ring and worm gear are fitted and connected to one end of the outer cabin, and a conical wake tube is provided on the periphery of the outer cabin that contacts the first connecting block, and one end of the rotating shaft is rotatably connected to the side of the wake tube.

[0021] As an improvement of the present invention, the second connecting block is rotatably connected to the end of the outer cabin, and the outer diameter of the second connecting block is adapted to the inner diameter of the tail end of the outer cabin.

[0022] The beneficial effects of this invention are: by increasing the airtightness of the device, the frequency of maintenance is greatly reduced, it is convenient to use, economical and affordable, and can significantly reduce the cost of power production and improve power generation efficiency. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of the present invention, the 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:

[0024] Figure 1 A schematic diagram of the structure of the guide vane outer journal sealing device of a long-life bulb-type turbine unit according to an embodiment of the present invention;

[0025] Figure 2 , 3 A schematic diagram of the waterproof unit of the guide vane in the guide vane outer journal sealing device of the long-life bulb-type turbine provided in an embodiment of the present invention;

[0026] Figure 4 , 5 A schematic diagram of the transverse and longitudinal cross-sectional structure of the guide vane waterproof unit of the guide vane outer journal sealing device of the long-life bulb-type turbine provided in an embodiment of the present invention.

[0027] Figure 6 , 7A schematic diagram of the structure of the runner waterproof unit in the guide vane outer journal sealing device of the long-life bulb-type turbine provided in one embodiment of the present invention;

[0028] Figure 8 A schematic diagram of the transverse cross-sectional structure of the one-way valve in the guide vane outer journal sealing device of a long-life bulb-type turbine unit according to an embodiment of the present invention.

[0029] Figure 9 A schematic diagram of the waterproof unit of the guide vane in the guide vane outer journal sealing device of the long-life bulb-type turbine provided in one embodiment of the present invention. Detailed Implementation

[0030] 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.

[0031] Example 1

[0032] This embodiment provides a guide vane outer journal sealing device for a long-life bulb-type turbine unit, comprising,

[0033] The guide vane waterproof unit 100 includes a first connecting block 103. A first waterproof mechanism 101 is arranged in a circumferential array on the side of the first connecting block 103, and a guide vane 102 is arranged on one side of the first waterproof mechanism 101. A first ring gear 106 is arranged at one end of the first connecting block 103, and a second ring gear 107 is connected to one side of the first ring gear 106.

[0034] The rotating waterproof unit 200 is disposed on one side of the guide vane waterproof unit 100. The rotating waterproof unit 200 includes a worm 201, one end of which is provided with a rotating wheel 202, and the side of the rotating wheel 202 is uniformly provided with fan blades 203 in the circumferential direction.

[0035] The generator unit 300 is located on the other side of the guide vane waterproof unit 100. The generator unit 300 includes an outer cabin 301. A bracket 302 is provided on the inner wall of the outer cabin 301, and a connecting shaft 305 is rotatably connected to one end of the bracket 302. A generator 303 is connected to the side of the connecting shaft 305 near the bracket 302.

[0036] Reference Figure 4 , 5The first waterproof mechanism 101 includes a guide vane bearing sleeve 101a, which is connected to the side of the first connecting block 103. A bearing sleeve 101e is fixedly sleeved inside the guide vane bearing sleeve 101a, and a bearing ball 101f is rotatably connected inside the bearing sleeve 101e. The heights of the bearing sleeve 101e and the bearing ball 101f are matched, and the lowest point of the bearing sleeve 101e is higher than the lowest point of the guide vane bearing sleeve 101a. A rotating shaft 105 is fixedly connected inside the bearing ball 101f. The rolling connection between the bearing ball 101f and the bearing sleeve 101e facilitates the rotation of the guide vane.

[0037] Reference Figure 2 , 4 5. A wear-resistant ring 101g is movably connected to the bottom of the bearing ball 101f in the guide vane bearing sleeve 101a to increase the wear resistance of the device. The wear-resistant ring 101g is movably sleeved on the rotating shaft 105, and the top of the wear-resistant ring 101g is in contact with the bearing ball 101f. A flat pressure lubrication and cleaning water channel 101h is provided inside the guide vane bearing sleeve 101a for adding flat pressure lubrication water. One end of the flat pressure lubrication and cleaning water channel 101h is located at the top of one side of the guide vane bearing sleeve 101a, and the other end passes through the bottom of the inner side of the guide vane bearing sleeve 101a and reaches the outer side of the wear-resistant ring 101g. A first plug 101i is inserted into the outer end of the flat pressure lubrication and cleaning water channel 101h to seal the flat pressure lubrication and cleaning water channel 101h.

[0038] Reference Figure 4 , 5 A grease filling channel 101l is provided on the side of the guide vane bearing sleeve 101a perpendicular to the flat pressure lubrication and cleaning water channel 101h for filling grease. One end of the grease filling channel 101l is located at the top of one side of the guide vane bearing sleeve 101a, and the other end passes through the bottom of the inner side of the guide vane bearing sleeve 101a and reaches the outer side of the wear ring 101g. A grease discharge channel 101m is provided on the other side of the guide vane bearing sleeve 101a located on the grease filling channel 101l for discharging grease. The structure of the grease discharge channel 101m is the same as that of the grease filling channel 101l. A second plug 101n is inserted into the outer end of the grease filling channel 101l and the grease discharge channel 101m for sealing the grease filling channel 101l and the grease discharge channel 101m.

[0039] Reference Figure 1 , 45 and 9, a bearing cover 101c is provided on the top of the guide vane bearing sleeve 101a, and a spacer ring 101b is provided inside the bearing cover 101c. The spacer ring 101b is movably sleeved on the outside of the rotating shaft 105. An O-ring 101j is provided between the spacer ring 101b and the rotating shaft 105. YX sealing rings 101k and O-rings 101j are provided between the bearing cover 101c and the spacer ring 101b, and an O-ring 101 is provided between the bearing cover 101c and the guide vane bearing sleeve 101a. An O-ring 101j is provided between the guide vane bearing sleeve 101a and the first connecting block 103 and between the wear ring 101g. A YX sealing ring 101k is provided above the O-ring 101j between the guide vane bearing sleeve 101a and the wear ring 101g. An O-ring 101j is provided between the wear ring 101g and the rotating shaft 105. The rotating shaft 105 and the guide vane bearing sleeve 101a are sealed by multiple O-rings 101j and YX sealing rings 101k, thereby increasing the airtightness of the device.

[0040] Example 2

[0041] This embodiment is based on the previous embodiment, and differs from the previous embodiment in that:

[0042] Combination Figure 3 and Figure 9 A guide vane 102 is fixedly connected to the side of the rotating shaft 105, and a cylindrical gear 108 is fixedly connected to the bottom of the rotating shaft 105. The teeth of the second ring gear 107 are located on the end face, which facilitates meshing with the cylindrical gear 108. The second ring gear 107 and the cylindrical gear 108 mesh with each other. The second ring gear 107 is rotatably connected to the side of the first connecting block 103. The teeth of the first ring gear 106 are located on the side, and a rack 109 is meshed with the top of the first ring gear 106. A hydraulic rod 104 is fixedly connected to one end of the rack 109, and the other end of the hydraulic rod 104 is fixedly connected to the inner wall of the outer cabin 301. By controlling the hydraulic rod 104, the rack 109 is driven to rotate the first ring gear 106. The rotation of the first ring gear 106 drives the second ring gear 107 to rotate and, through meshing, drives the cylindrical gear 108 to rotate.

[0043] Combination Figure 6 , 7 One end of the worm gear 201 is fixedly connected to a second connecting block 205, and the other end of the second connecting block 205 is fixedly connected to one end of the rotating wheel 202. A guide hole 206 is provided inside the second connecting block 205 for drainage. The other end of the worm gear 201 is fixedly connected to a connecting post 207. A fixing ring 208 is rotatably connected to the outer end of the connecting post 207, and the fixing ring 208 is fixedly connected to the inner wall of the outer cabin 301. The other end of the connecting post 207 is fixedly connected to one end of the connecting shaft 305. The worm gear 201 rotates under the drive of the rotating wheel 202 and discharges water into the guide hole 206.

[0044] Example 3

[0045] This embodiment is based on the previous embodiment, and differs from the previous embodiment in that:

[0046] Reference Figure 7 , 8 The end face of the rotating wheel 202 has a circular hole 204, and a one-way valve 209 is installed inside the circular hole 204. The one-way valve 209 includes an outer sleeve 209a, which is fixedly connected inside the circular hole 204. A connecting plate 209b is fixedly connected to one end of the outer sleeve 209a, and multiple water passage holes 209c are opened on the connecting plate 209b. A spring 209d is fixedly connected to the connecting plate 209b inside the outer sleeve 209a. The other end of 09d is fixedly connected to a plunger 209e, which is shaped like a frustum. One end of the outer sleeve 209a is adapted to the plunger 209e. The plunger 209e is separated from the outer sleeve 209a by the water pressure squeezing the spring 209d, so that the water flows outward, thereby achieving water circulation. When the internal water pressure is less than the external pressure, the plunger 209e merges with the outer sleeve 209a under the action of the spring 209d, so that the water cannot enter the device.

[0047] Reference Figure 1 The outer compartment 301 is bulb-shaped. The shape of the first connecting block 103 is adapted to the connection of the outer compartment 301. A wake pipe 304 is provided on the side of the outer compartment 301. One end of the rotating shaft 105 is rotatably connected to the side of the wake pipe 304, which helps to maintain the stability of the guide vane.

[0048] Reference Figure 1 The second connecting block 205 is rotatably connected to the end of the outer compartment 301, and the size of the second connecting block 205 is adapted to the inner diameter of the tail end of the outer compartment 301, which helps to significantly reduce the speed at which water flows into the interior of the outer compartment 301.

[0049] In this embodiment, multiple O-rings 101j and YX sealing rings 101k are used to seal the rotating shaft 105 and the guide vane bearing sleeve 101a, increasing the airtightness of the device and reducing the frequency of maintenance. When maintenance is required, the hydraulic rod 104 drives the rack 109 to rotate the first ring gear 106. The rotation of the first ring gear 106 drives the second ring gear 107 to rotate, and through meshing, drives the cylindrical gear 108 to rotate, thereby driving the rotating shaft 105 and the guide vane 102 to rotate and close, thus reducing the water flow and facilitating maintenance. The first plug 101i is opened, and cleaning water is added through the flat pressure lubrication cleaning water channel 101h to effectively reduce the amount of mud and sand entering the device and causing damage. The second plug 101i is opened. 01n, adding grease through the grease filling channel 101l can effectively reduce the friction between the wear ring 101g and the guide vane bearing sleeve 101a, thereby improving the service life of the device; when water enters the tail of the outer compartment 301, the water flows into the worm 201. At this time, the worm 201 rotates under the drive of the wheel 202 and discharges the water into the guide hole 206, and enters the one-way valve 209 on the end face of the wheel 202 through the guide hole 206. The water pressure squeezes the spring 209d to separate the plunger 209e from the outer sleeve 209a, so that the water flows outward, thereby achieving water circulation. When the internal water pressure is less than the external pressure, the plunger 209e merges with the outer sleeve 209a under the action of the spring 209d, so that the water cannot enter the inside of the device.

[0050] 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 sealing device for the outer journal of the guide vane of a long-life bulb-type turbine generator set, characterized in that: include, A guide vane waterproof unit (100) includes a first connecting block (103), a first waterproof mechanism (101) is arranged in a circumferential array on the side of the first connecting block (103), and a guide vane (102) is arranged on one side of the first waterproof mechanism (101). A first ring gear (106) is arranged at one end of the first connecting block (103), and a second ring gear (107) is connected to one side of the first ring gear (106). A rotating waterproof unit (200) is disposed on one side of the guide vane waterproof unit (100). The rotating waterproof unit (200) includes a worm (201), one end of which is provided with a rotating wheel (202), and the side of the rotating wheel (202) is uniformly provided with fan blades (203) in the circumferential direction. The generator unit (300) is located on the other side of the guide vane waterproof unit (100). The generator unit (300) includes an outer cabin (301). A bracket (302) is provided on the inner wall of the outer cabin (301). A connecting shaft (305) is rotatably connected to one end of the bracket (302). A generator (303) is connected to the side of the connecting shaft (305) near the bracket (302). The first waterproof mechanism (101) includes a guide vane bearing sleeve (101a), which is connected to the side of the first connecting block (103). A bearing sleeve (101e) is fixedly sleeved inside the guide vane bearing sleeve (101a), and a bearing ball (101f) is rotatably connected inside the bearing sleeve (101e). The heights of the bearing sleeve (101e) and the bearing ball (101f) are matched, and the lowest point of the bearing sleeve (101e) is higher than the lowest point of the guide vane bearing sleeve (101a). A rotating shaft (105) is fixedly connected inside the bearing ball (101f). The rotating shaft (105) has guide vanes (102) and cylindrical gears (108) connected to its two ends respectively. The teeth of the second ring gear (107) are located on the end face. The second ring gear (107) meshes with the cylindrical gear (108). The second ring gear (107) is rotatably connected to the side of the first connecting block (103). The teeth of the first ring gear (106) are located on the side. The top of the first ring gear (106) is meshed with a rack (109). One end of the rack (109) is fixedly connected to a hydraulic rod (104), and the other end of the hydraulic rod (104) is fixedly connected to the inner wall of the outer cabin (301).

2. The guide vane outer journal sealing device of the long-life bulb-type turbine unit according to claim 1, characterized in that: The guide vane bearing sleeve (101a) is movably connected to the bottom of the bearing ball (101f) with a wear-resistant ring (101g), and the wear-resistant ring (101g) is movably sleeved on the rotating shaft (105). The top of the wear-resistant ring (101g) is in contact with the bearing ball (101f). The guide vane bearing sleeve (101a) is provided with a flat pressure lubrication and cleaning water channel (101h). One end of the flat pressure lubrication and cleaning water channel (101h) is located at the top of one side of the guide vane bearing sleeve (101a), and the other end passes through the bottom of the inner side of the guide vane bearing sleeve (101a) and reaches the outside of the wear-resistant ring (101g). The end of the flat pressure lubrication and cleaning water channel (101h) located on the outside of the guide vane bearing sleeve (101a) is connected with a first plug (101i).

3. The guide vane outer journal sealing device of the long-life bulb-type turbine unit according to claim 1 or 2, characterized in that: A grease filling channel (101l) is provided on the side of the guide vane bearing sleeve (101a) perpendicular to the flat pressure lubrication and cleaning water channel (101h). One end of the grease filling channel (101l) is located at the top of the guide vane bearing sleeve (101a), and the other end passes through the inner bottom of the guide vane bearing sleeve (101a) and reaches the outer side of the wear ring (101g). A grease discharge channel (101m) is provided on the other side of the guide vane bearing sleeve (101a) located on the grease filling channel (101l). The structure of the discharge channel (101m) is the same as that of the grease filling channel (101l). The grease filling channel (101l) and the grease discharge channel (101m) are connected to a second plug (101n) at one end outside the guide vane bearing sleeve (101a). The grease filling channel (101l) and the grease discharge channel (101m) are on the same plane. The flat pressure lubrication cleaning water channel (101h) is perpendicular to the plane of the grease filling channel (101l) and the grease discharge channel (101m).

4. The guide vane outer journal sealing device of the long-life bulb-type turbine unit according to claim 3, characterized in that: The top of the guide vane bearing sleeve (101a) is connected to a bearing cover (101c) by bolts (101d), and a spacer ring (101b) is provided inside the bearing cover (101c). The spacer ring (101b) is movably sleeved on the outside of the rotating shaft (105). An O-ring (101j) is provided between the spacer ring (101b) and the rotating shaft (105). YX sealing rings (101k) and O-rings (101j) are provided between the bearing cover (101c) and the spacer ring (101b) and are distributed vertically. An O-ring (101j) is provided between the cover (101c) and the guide vane bearing sleeve (101a). An O-ring (101j) is also provided between the guide vane bearing sleeve (101a) and the first connecting block (103) and between the wear ring (101g). A YX sealing ring (101k) is provided above the O-ring (101j) between the guide vane bearing sleeve (101a) and the wear ring (101g). An O-ring (101j) is provided between the wear ring (101g) and the rotating shaft (105).

5. The guide vane outer journal sealing device of the long-life bulb-type turbine unit according to claim 4, characterized in that: One end of the worm (201) is fixedly connected to a second connecting block (205), and the other end of the second connecting block (205) is fixedly connected to one end of the rotating wheel (202). The axial outer surface of the second connecting block (205) is uniformly provided with guide holes (206) along the circumferential direction. The other end of the worm (201) is connected to a connecting post (207). A fixing ring (208) is rotatably connected to the periphery of the connecting post (207), and the fixing ring (208) is fixedly connected to the inner wall of the outer cabin (301). The other end of the connecting post (207) is fixedly connected to one end of the connecting shaft (305).

6. The guide vane outer journal sealing device of the long-life bulb-type turbine unit according to claim 1 or 5, characterized in that: The end face of the rotating wheel (202) is uniformly provided with circular holes (204) along the circumference, and a one-way valve (209) is provided inside the circular holes (204). The one-way valve (209) includes an outer sleeve (209a), which is connected to the inside of the circular holes (204). One end of the outer sleeve (209a) is fixedly connected to a connecting plate (209b), and water passage holes are uniformly provided on the connecting plate (209b). 209c), the connecting disc (209b) is located inside the outer sleeve (209a) and connected to a spring (209d), and the other end of the spring (209d) is connected to a plunger (209e). The plunger (209e) is frustum shaped. The diameter of the contact surface between the plunger (209e) and the spring (209d) is smaller than the diameter of the other side. One end of the outer sleeve (209a) is adapted to the plunger (209e).

7. The guide vane outer journal sealing device of the long-life bulb-type turbine unit according to claim 6, characterized in that: The outer cabin (301) is bulb-shaped. The first connecting block (103), connecting column (207), fixing ring (208) and worm gear (201) are attached to one end of the outer cabin (301). A conical wake pipe (304) is provided on the periphery of the outer cabin (301) that contacts the first connecting block (103). One end of the rotating shaft (105) is rotatably connected to the side of the wake pipe (304).

8. The guide vane outer journal sealing device of the long-life bulb-type turbine unit according to claim 7, characterized in that: The second connecting block (205) is rotatably connected to the end of the outer cabin (301), and the outer diameter of the second connecting block (205) is adapted to the inner diameter of the tail end of the outer cabin (301).

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