Water turbine sealing auxiliary platform

Abstract

The invention relates to the technical field of water turbine sealing maintenance, in particular to a water turbine sealing auxiliary platform. The supporting mechanism comprises a closed platform and a stabilizing assembly fixedly arranged on the surface of the closed platform; the adjusting mechanism comprises a rotary adjusting rod penetrating through the inner wall of the stabilizing assembly, a moving piston fixedly arranged at the top of the rotary adjusting rod, and an operating platform located at the top of the moving piston; the dehumidification mechanism comprises an air guide channel fixedly formed in the inner wall of the stabilizing assembly and absorption modules fixedly arranged on the two sides of the stabilizing assembly. The device is easy to operate, a groove in the bottom of a sealing ring can be synchronously pushed and pressed in the vertical and horizontal directions by rotating and pushing an operation handle at the bottom of the closed platform, the sealing performance is enhanced, leakage is prevented, and a dehumidification mechanism can be linked to absorb and store leaked water while the operation handle rotates and ascends; the speed of the reset pressing assembly can be reduced according to the air pressure principle of the dehumidification mechanism, and potential safety hazards are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of water turbine seal maintenance, in particular to a water turbine seal auxiliary platform. Background Art

[0002] In a hydroelectric power station, the sealing performance of the water guide sleeve is crucial to the safe and stable operation of the entire unit. Although the commonly used large sealing rings can provide basic sealing effects in most applications, they perform poorly under certain working conditions. The main sealing mechanism of large sealing rings is to achieve sealing by tightening the skirt through the water pressure in the flow channel. However, when the water pressure in the flow channel is low, the sealing ring cannot be tightened effectively, resulting in a decrease in sealing performance, which is particularly obvious during low load or start-stop processes. In addition, the material and structure of the sealing ring are also prone to performance degradation due to long-term mechanical stress and environmental factors.

[0003] Traditional sealing solutions cannot meet high performance requirements. Water leakage in the water guide sleeve not only increases maintenance costs, but may also cause unit shutdown or serious equipment accidents due to seal failure, affecting the economic benefits and safe operation of the power station.

[0004] Therefore, a turbine seal auxiliary platform is needed which is installed under the sealing ring, is easy to operate, and can synchronously push the groove at the bottom of the sealing ring in vertical and horizontal directions to meet the needs of the existing turbine maintenance environment. Summary of the invention

[0005] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract of the specification and the title of the invention of this application to avoid blurring the purpose of this section, the abstract of the specification and the title of the invention, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0006] In view of the above-mentioned prior art, the commonly used large sealing rings cannot be effectively tightened under certain working conditions, resulting in reduced sealing performance, which is particularly obvious during low load or start-stop processes.

[0007] Therefore, the technical problem to be solved by the present invention is to design a turbine sealing auxiliary platform which is installed under the sealing ring, is easy to operate, and can synchronously push the groove at the bottom of the sealing ring in vertical and horizontal directions to meet the needs of the existing turbine maintenance environment.

[0008] In order to solve the above technical problems, the present invention provides the following technical solutions: a turbine sealing auxiliary platform, comprising: The supporting mechanism comprises a closed platform and a stabilizing assembly fixedly arranged on the surface of the closed platform; The adjusting mechanism comprises a rotating adjusting rod penetrating the inner wall of the stabilizing assembly, a moving piston fixedly arranged on the top of the rotating adjusting rod, and a running platform located on the top of the moving piston; And a dehumidification mechanism, including an air guide channel fixedly opened on the inner wall of the stabilizing assembly, and an absorption module fixedly arranged on both sides of the stabilizing assembly.

[0009] As an improvement of the present invention, a receiving sleeve is fixedly provided on the top of the stabilizing assembly, an annular track is fixedly provided on the inner wall of the receiving sleeve, and a flat track is fixedly provided on the top of the annular track.

[0010] As an improvement of the present invention, a sealing ball is rotatably provided on one side of the operating platform, and the sealing ball is slidably matched with the annular track.

[0011] As an improvement of the present invention, a rotation groove is fixedly provided at the bottom of the stabilizing assembly, the rotation adjustment rod is located in the rotation groove, the other end of the rotation adjustment rod is connected to an operating handle, and the operating handle is located on the other side of the stabilizing assembly.

[0012] As an improvement of the present invention, an elastic member is fixedly provided at the bottom of the moving piston, the other end of the elastic member is fixedly connected to the inner wall of the stabilizing assembly, and the air guide channel is located on both sides of the rotating groove.

[0013] As an improvement of the present invention, a prompt module is fixedly provided on the inner wall of the accommodating sleeve, a sensing groove is fixedly opened in the prompt module, the other side of the operating platform corresponds to the sensing groove, the sensing groove is electrically connected to an indicator light, and the indicator light is fixedly provided at the bottom of the operating handle.

[0014] As an improvement of the present invention, an extension rod is fixedly provided on the top of the operating platform, and a clamping assembly is fixedly provided on the top of the extension rod.

[0015] As an improvement of the present invention, pressure rods are fixedly connected to both sides of the clamping assembly, vertical push plates are arranged on the tops of the pressure rods, and horizontal push rods are fixedly arranged on the side walls of the pressure rods.

[0016] As an improvement of the present invention, an absorber is fixedly arranged inside the absorbing module, and a absorbing hole is fixedly opened on the side wall of the absorbing module, and the absorbing hole passes through the inside of the absorbing module.

[0017] As an improvement of the present invention, a transmission tube is connected through the bottom of the absorbing module, a matching tube is connected through the bottom of the air guide channel, and the transmission tube is plugged into the matching tube.

[0018] The beneficial effects of the present invention are: simple operation, by rotating and pushing the operating handle at the bottom of the closed platform, the groove at the bottom of the sealing ring can be pushed synchronously in the vertical and horizontal directions, thereby enhancing the sealing performance and preventing leakage. When the operating handle is rotated and raised, the dehumidification mechanism can also be linked to absorb and store leaked water. The reset and clamping assembly can reduce the speed and reduce safety hazards through the air pressure principle of the dehumidification mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them: Figure 1 It is a three-dimensional schematic diagram of the operation scene of the turbine sealing auxiliary platform in the present invention.

[0020] Figure 2 This is a schematic diagram from another angle showing the operation scene of the turbine sealing auxiliary platform in the present invention.

[0021] Figure 3 It is a structural layout diagram of the turbine sealing auxiliary platform in the present invention.

[0022] Figure 4 It is a planar cross-sectional view of the local structure of the turbine sealing auxiliary platform in the present invention.

[0023] Figure 5 It is a three-dimensional schematic diagram of the local structure of the turbine sealing auxiliary platform in the present invention.

[0024] Figure 6 A three-dimensional cross-sectional view of the local structure of the turbine sealing auxiliary platform in the present invention Figure 7 This is a diagram showing the effect of the hydraulic turbine seal auxiliary platform pressing assembly acting on the seal ring in the present invention.

[0025] Figure 8 This is a schematic diagram of the coordination between the induction slot and indicator light of the turbine seal auxiliary platform in the present invention. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0027] Example 1 Reference Figures 1 to 5 , this embodiment provides a turbine sealing auxiliary platform.

[0028] The supporting mechanism 100 is used to support the entire turbine sealing auxiliary platform. The closed platform 101 is located below the turbine unit sealing ring and cooperates with the entire sealing auxiliary platform to provide auxiliary sealing for the turbine unit sealing ring to prevent leakage. A plurality of stabilizing assemblies 102 are provided and distributed in a ring shape on the closed platform 101.

[0029] The adjustment mechanism 200 is used to adjust the state of the stabilizing assembly 102 and apply pressure to the turbine assembly sealing ring. A rotating adjustment rod 201 is rotatably provided on the inner wall of the stabilizing assembly 102, and the rotating adjustment rod 201 passes through the stabilizing assembly 102. The rotating adjustment rod 201 can be operated from the bottom of the stabilizing assembly 102.

[0030] A moving piston 202 is fixedly disposed on the top of the rotating adjustment rod 201. The moving piston 202 fits tightly against the inner wall of the stabilizing assembly 102 to provide good airtightness. The operating platform 203 can rotate along with the rotation of the rotating adjustment rod 201, and is fixedly arranged on the top of the moving piston 202. On the inner wall of the stabilizing assembly 102, in the cavity accommodating the moving piston 202, a circular ascending track is fixedly provided to cooperate with the operating platform 203. During the rotation of the moving piston 202, the operating platform 203 and the circular ascending track can also be used to achieve synchronous ascent. The last section of the circular ascending track is set as a horizontal ring, which no longer shows an upward trend. The horizontal ring setting can limit the movement range of the operating platform 203, and can also play a limiting role to prevent the operating platform 203 from resetting.

[0031] A clamping assembly 205 capable of pushing the turbine unit sealing ring is arranged on the top of the operating platform 203. The clamping assembly 205 gradually rises and rotates while following the movement of the operating platform 203. The circular ascending track ensures that the rotation angle of the operating platform 203 is about 90 degrees, so the rotation angle of the clamping assembly 205 is also about 90 degrees. The clamping assembly 205 corresponds to the U-shaped groove of the turbine unit sealing ring. After the clamping assembly 205 rises and rotates, it pushes the top and side wall of the U-shaped groove of the turbine unit sealing ring synchronously, which can well ensure the fit between the turbine unit sealing ring and the sealing position, and prevent the sealing ring from aging and local sealing failure and water leakage during long-term use.

[0032] The dehumidification mechanism 300 is used to cooperate with the movement of the moving piston 202 to achieve moisture absorption and subsequent drainage of the space between the closed platform 101 and the turbine unit sealing ring, so as to avoid slow moisture accumulation during long-term use, which may cause safety hazards. The inner wall of the stabilizing assembly 102 is fixedly penetrated with an air guide channel 301. Two air guide channels 301 are provided, which respectively penetrate the stabilizing assembly 102 and extend toward both sides of the stabilizing assembly 102. The outer wall of the stabilizing assembly 102 is fixedly provided with an absorption module 302. The bottom of the absorption module 302 fits the bottom of the closed platform 101, and the absorption module 302 and the air guide channel 301 are connected through a hose.

[0033] During the process of rotating and ascending, the moving piston 202 can adjust the air pressure through the air channel 301, thereby creating a negative pressure environment in the air channel 301. The side wall of the absorption module 302 is fixedly provided with an absorption hole 302b. Since the air channel 301 and the absorption module 302 are connected through a hose, the absorption hole 302b can absorb the residual moisture on the surface of the closed platform 101 under the action of negative pressure.

[0034] Example 2 Reference Figures 1 to 7 This embodiment is based on the previous embodiment, and is different from the previous embodiment in that: A rotation groove 102a is fixedly provided at the bottom of the stabilizing assembly 102, and the rotation adjustment rod 201 is located in the rotation groove 102a. The other end of the rotation adjustment rod 201 is fixedly connected to an operating handle 201a, and the operating handle 201a is located at the other side of the stabilizing assembly 102, that is, below the closed platform 101. The staff can rotate the operating handle 201a from below the closed platform 101 to drive the rotation adjustment rod 201 to rotate and perform subsequent movements. After the rotation adjustment rod 201 rotates, the linkage motion piston 202 and the operating platform 203 rotate synchronously.

[0035] The top of the stabilizing assembly 102 is fixedly provided with a receiving sleeve 204, the inner wall of the receiving sleeve 204 is fixedly provided with a ring track 204a, and a non-rising gentle track 204b is fixedly provided on the top of the ring track 204a. The operating platform 203 is provided with a sealing ball 203a that rotates toward one side of the ring track 204a. During the movement, the operating platform 203 can rotate and rise through the cooperation of the sealing ball 203a and the ring track 204a. The sealing ball 203a fits tightly with the inner wall of the ring track 204a and the gentle track 204b, and the outer wall of the sealing ball 203a can be covered with rubber material to provide better airtightness.

[0036] After the operating platform 203 moves to the maximum along the annular track 204a, it will enter the gentle track 204b and stop rising. The bottom of the moving piston 202 is fixedly connected with an elastic member 202a, and the other end of the elastic member 202a is fixedly connected to the inner wall of the stabilizing assembly 102. During the rising and rotating process of the moving piston 202, it can synchronously drive the elastic member 202a at the bottom to move along the corresponding track. Since the rotation angle of the moving piston 202 is about 90 degrees, it will not cause a large deformation to the elastic member 202a, and conventional spring tension springs and other structures can fully adapt to this degree of movement.

[0037] After deformation, the elastic member 202a can generate elastic force to drive the moving piston 202 to reset. Two air guide channels 301 are provided, which are respectively located on both sides of the rotating groove 102a. During the rising and rotating process of the moving piston 202, the air pressure can be adjusted through the air guide channels 301, thereby creating a negative pressure environment in the air guide channels 301.

[0038] On the other side of the inner wall of the accommodating sleeve 204, a prompt module 204c is also fixedly installed. A sensing groove 204c-1 is fixedly opened in the prompt module 204c. The sensing groove 204c-1 and the flat track 204b are located on the same horizontal plane. After one end of the operating platform 203 and the sealing ball 203a enter the flat track 204b, the other end of the operating platform 203 also rotates horizontally and enters the sensing groove 204c-1.

[0039] The sensing slot 204c-1 is electrically connected to the indicator light 201a-1, and the indicator light 201a-1 is fixedly installed at the bottom of the operating handle 201a. The sensing slot 204c-1 is set to contact start, so the linkage indicator light 201a-1 will be activated after it contacts the other end of the operating platform 203. The indicator light 201a-1 lights up, indicating that the operating platform 203 has entered the flat track 204b and the sensing slot 204c-1, and will not be pulled back by the elastic force after the elastic member 202a is deformed.

[0040] Example 3 Reference Figures 1 to 8 This embodiment is based on the previous embodiment, and is different from the previous embodiment in that: An extension rod 203b is fixedly arranged on the top of the operating platform 203, and the extension rod 203b can rotate and rise following the movement of the operating platform 203. A clamping assembly 205 is fixedly arranged on the top of the extension rod 203b, and the clamping assembly 205 is used to directly match the top and side wall of the U-shaped groove of the turbine assembly sealing ring.

[0041] Pressure rods 205a are fixedly connected on both sides of the clamping assembly 205. The pressure rods 205a can provide an elastic buffering effect for the clamping assembly 205 to avoid a large friction impact when the clamping assembly 205 rotates to contact the sealing ring of the turbine unit, and the elastic force can act in the opposite direction on the sealing ring of the turbine unit, making the clamping effect more adaptable. A vertical push plate 205a-1 is fixedly set on the top of the pressure rod 205a, and a horizontal push rod 205a-2 is fixedly set on the side wall of the pressure rod 205a. The vertical push plate 205a-1 is used to squeeze the top of the U-shaped groove of the turbine unit sealing ring, and the horizontal push rod 205a-2 is used to squeeze the side wall of the U-shaped groove of the turbine unit sealing ring.

[0042] The vertical push plate 205a-1 and the horizontal push rod 205a-2 gradually apply linear pressure to two positions of the U-shaped groove while following the rotation of the clamping assembly 205, which has a better effect.

[0043] During the process of rotating and rising, the moving piston 202 can realize air pressure regulation through the air guide channel 301, thereby creating a negative pressure environment in the air guide channel 301. The side wall of the absorption module 302 is fixed with an absorption hole 302b, and the absorption hole 302b is connected to the inside of the absorption module 302. The absorption member 302a is fixedly arranged inside the absorption module 302. The absorption member 302a can be a solid material with strong water absorption, which can ensure that after the droplets contact the absorption member 302a through the absorption hole 302b, the droplets can be effectively adsorbed and will not easily run out. The bottom of the absorption module 302 is connected to the transmission tube 302c, and the transmission tube 302c is also located at the bottom of the absorption member 302a. One end of the transmission tube 302c faces the air guide channel 301, and at the bottom of the air guide channel 301, a matching tube 301a is also connected, and the matching tube 301a faces the transmission tube 302c.

[0044] After the adsorption action is completed, the absorbent 302a that absorbs the droplets can separate some of the droplets and enter the transmission tube 302c. The transmission tube 302c itself is arc-shaped and can guide the droplets entering the transmission tube 302c into the middle position where the matching tube 301a and the transmission tube 302c are plugged in.

[0045] The matching pipe 301a and the transmission pipe 302c are plugged in. The materials of the transmission pipe 302c and the matching pipe 301a are both set to be rubber hoses. After the two are plugged in, they can also achieve good sealing effects, and the direct plug-in connection method is convenient for the staff to separate the matching pipe 301a and the transmission pipe 302c and perform subsequent drainage operations during shutdown maintenance work.

[0046] When maintenance work is required later, it is only necessary to manually separate the matching tube 301a and the transmission tube 302c. Some droplets will be left out from the separation position of the matching tube 301a and the transmission tube 302c, and the operating handle 201a is reversed to make the corresponding operating platform 203 rotate in the opposite direction and return from the flat track 204b to the annular track 204a. The annular track 204a itself has a large slope. Once the sealing ball 203a corresponding to the operating platform 203 returns to the annular track 204a in the opposite direction, the elastic member 202a fixed at the bottom of the moving piston 202 will play a role. The reverse elastic force generated by the rotation and stretching of the elastic member 202a itself drives the moving piston 202 to gradually reset.

[0047] The elastic force of the elastic member 202a is relatively large, and it can drive the moving piston 202 to reset at a faster speed. However, the size of the air guide channel 301 itself is very small. Therefore, under the action of air pressure, the reset speed of the moving piston 202 will be limited. By limiting the movement of the moving piston 202 and the operating handle 201a by air pressure, the force of the movement impact can be effectively reduced, the wear of the direct movement coordination of the structure can be reduced, and safety problems caused by the reset operating handle 201a being avoided when the staff is not concentrating can be avoided.

[0048] During the return movement of the moving piston 202, the residual droplets in the matching tube 301a can continue to be blown out by air pressure.

[0049] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A turbine seal auxiliary platform, characterized in that: include, The support mechanism (100) comprises a closed platform (101) and a stabilizing assembly (102) fixedly arranged on the surface of the closed platform (101); The adjusting mechanism (200) comprises a rotating adjusting rod (201) penetrating the inner wall of the stabilizing assembly (102), a moving piston (202) fixedly arranged on the top of the rotating adjusting rod (201), and a running platform (203) located on the top of the moving piston (202); And a dehumidification mechanism (300), comprising an air guide channel (301) fixedly opened on the inner wall of the stabilizing assembly (102), and an absorption module (302) fixedly arranged on both sides of the stabilizing assembly (102).

2. The turbine seal auxiliary platform according to claim 1, characterized in that: A receiving sleeve (204) is fixedly arranged on the top of the stabilizing assembly (102), a ring-shaped track (204a) is fixedly opened on the inner wall of the receiving sleeve (204), and a flat track (204b) is fixedly arranged on the top of the ring-shaped track (204a).

3. The turbine seal auxiliary platform according to claim 2, characterized in that: A sealing ball (203a) is rotatably arranged on one side of the operating platform (203), and the sealing ball (203a) is slidably matched with the annular track (204a).

4. The turbine seal auxiliary platform according to claim 3, characterized in that: A rotation groove (102a) is fixedly provided at the bottom of the stabilizing assembly (102), the rotation adjustment rod (201) is located in the rotation groove (102a), the other end of the rotation adjustment rod (201) is connected to an operating handle (201a), and the operating handle (201a) is located at the other side of the stabilizing assembly (102).

5. The turbine seal auxiliary platform according to claim 4, characterized in that: An elastic member (202a) is fixedly arranged at the bottom of the moving piston (202), the other end of the elastic member (202a) is fixedly connected to the inner wall of the stabilizing assembly (102), and the air guide channel (301) is located on both sides of the rotating groove (102a).

6. The water turbine sealing auxiliary platform according to claim 5, characterized in that: A prompt module (204c) is fixedly arranged on the inner wall of the accommodating sleeve (204), a sensing groove (204c-1) is fixedly opened in the prompt module (204c), the other side of the operating platform (203) corresponds to the sensing groove (204c-1), the sensing groove (204c-1) is electrically connected to an indicator light (201a-1), and the indicator light (201a-1) is fixedly arranged at the bottom of the operating handle (201a).

7. The water turbine sealing auxiliary platform according to claim 6, characterized in that: An extension rod (203b) is fixedly arranged on the top of the operating platform (203), and a pressing assembly (205) is fixedly arranged on the top of the extension rod (203b).

8. The water turbine sealing auxiliary platform according to claim 7, characterized in that: Pressure rods (205a) are fixedly connected to both sides of the clamping assembly (205), a vertical push plate (205a-1) is arranged on the top of the pressure rod (205a), and a horizontal push rod (205a-2) is fixedly arranged on the side wall of the pressure rod (205a).

9. The turbine seal auxiliary platform according to any one of claims 1 to 8, characterized in that: An absorber (302a) is fixedly arranged inside the absorption module (302), and an absorption hole (302b) is fixedly opened on the side wall of the absorption module (302), and the absorption hole (302b) passes through the inside of the absorption module (302).

10. The water turbine sealing auxiliary platform according to claim 3, characterized in that: The bottom of the absorption module (302) is connected through a transmission tube (302c), the bottom of the air guide channel (301) is connected through a matching tube (301a), and the transmission tube (302c) is plugged into the matching tube (301a).

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