CN217325278U - Double-layer air-closing air cushion type surge chamber - Google Patents
Double-layer air-closing air cushion type surge chamber Download PDFInfo
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- CN217325278U CN217325278U CN202221291088.3U CN202221291088U CN217325278U CN 217325278 U CN217325278 U CN 217325278U CN 202221291088 U CN202221291088 U CN 202221291088U CN 217325278 U CN217325278 U CN 217325278U
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- air
- sealing
- cover body
- pressure regulating
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Abstract
The utility model discloses a double-layer air-closed air cushion type surge chamber, which comprises a surge chamber cover body and a water inlet channel communicated with the surge chamber cover body, wherein the inner wall surface of the surge chamber cover body is covered with a first air-closed layer and a second air-closed layer, and the second air-closed layer is positioned between the first air-closed layer and the inner wall surface of the surge chamber cover body; the tail ends of the first air-lock layer and the second air-lock layer are positioned below the lowest surge water level of the surge chamber; and a sealing end device for sealing the tail ends of the first air-tight layer and the second air-tight layer is also arranged in the pressure regulating chamber cover body. The utility model discloses an increase first layer of remaining silent and the second layer of remaining silent and improve the inside effect of remaining silent in surge-chamber on the inner wall of the surge-chamber cover body, close the end on layer of remaining silent and second through increasing the terminating set and seal, can close the end on layer of remaining silent and second simultaneously and compress tightly fixedly to the end on layer of remaining silent and second to avoid the end on layer of remaining silent to take place gas leakage or intake, and then improve the effect of remaining silent in the surge-chamber cover body.
Description
Technical Field
The utility model belongs to the technical field of hydraulic and hydroelectric engineering technique and specifically relates to a double-deck air-tight air cushion type surge-chamber that closes.
Background
The surge chamber is a device for inhibiting water hammer and surge in water conservancy and hydropower engineering, and can reduce the water hammer pressure of a pressure water channel and improve the operation stability and the power supply quality of a unit. The upper part of the existing pressure regulating chamber is communicated with the atmosphere, so the water surface pressure in the pressure regulating chamber is the same as the atmospheric pressure. When the load of the power station is adjusted, the water surface lifting amplitude in the pressure regulating chamber is large, so that the volume of the pressure regulating chamber is required to be set to be large enough.
When the quality of the surrounding rock mass is good, the buried depth and the minimum ground stress meet the conditions, an air cushion type surge chamber can be adopted; the upper part of the air cushion type pressure regulating chamber is in a closed state, compressed air is filled in the air cushion type pressure regulating chamber, the lower part of the air cushion type pressure regulating chamber is a water cushion, high-pressure air in the pressure regulating chamber is utilized to form an air cushion to inhibit the height and the fluctuation amplitude value of the water level in the pressure regulating chamber, and the page pressure is high. Because the sleep lifting amplitude of the air cushion type pressure regulating chamber is smaller, the volume of the air cushion type pressure regulating chamber is smaller than that of a conventional pressure regulating chamber.
Because the surge-chamber is long-term in the operation under water, gas environment, the cover body of surge-chamber takes place the corrosion very easily, leads to the interior high-pressure gas of surge-chamber to reveal in the country rock from the concrete crack, further aggravates the gas leakage of surge-chamber, seriously influences the gas-tight effect and the life of surge-chamber.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: provides a double-layer air-closing air cushion type surge chamber with good air-closing effect.
In order to solve the technical problem the utility model discloses the technical scheme who adopts is: the double-layer air-closed air cushion type pressure regulating chamber comprises a pressure regulating chamber cover body and a water inlet channel communicated with the pressure regulating chamber cover body, wherein a first air-closing layer and a second air-closing layer are covered on the inner wall surface of the pressure regulating chamber cover body, and the second air-closing layer is positioned between the first air-closing layer and the inner wall surface of the pressure regulating chamber cover body; the tail ends of the first air-lock layer and the second air-lock layer are positioned below the lowest surge water level of the surge chamber; and a sealing end device for sealing the tail ends of the first air-tight layer and the second air-tight layer is also arranged in the pressure regulating chamber cover body.
Further, the method comprises the following steps: the end sealing device comprises a sealing cover which is a circular sealing cover arranged around the circumferential surface of the inner wall of the pressure regulating chamber cover body; the lower part of the sealing cover is tightly attached to the circumferential surface of the inner wall of the pressure regulating chamber cover body and is detachably connected with the pressure regulating chamber cover body, and a gap for inserting the tail end of the first gas-tight layer is formed between the upper part of the sealing cover and the pressure regulating chamber cover body.
Further, the method comprises the following steps: the end sealing device further comprises a sealing ring sleeved on the upper portion of the sealing cover, and the sealing ring is located between the upper portion of the sealing cover and the first gas sealing layer.
Further, the method comprises the following steps: and one surface of the first gas-closing layer facing the sealing cover is provided with a concave sealing groove, and the sealing ring is in snap fit with the sealing groove.
Further, the method comprises the following steps: the lower part of the sealing cover is provided with a mounting hole, and the sealing cover is in threaded connection with the pressure regulating chamber cover body through a countersunk screw penetrating through the mounting hole.
Further, the method comprises the following steps: the sealing device is characterized by further comprising a sealing bulge fixed on the lower portion of the sealing cover, the sealing bulge is arranged on the side, contacting with the pressure regulating chamber cover body, of the lower portion of the sealing cover in a surrounding mode, a sealing groove matched with the sealing bulge is formed in the pressure regulating chamber cover body, the sealing bulge is inserted into the sealing groove, and the countersunk screw penetrates through the sealing bulge and the sealing groove in sequence and then is in threaded connection with the pressure regulating chamber cover body.
Further, the method comprises the following steps: and glass cement is filled in the mounting hole.
Further, the method comprises the following steps: the inner wall surface of the pressure regulating chamber cover body is recessed to form an embedded groove for embedding and laying the second air-tight layer; the second closes the gas layer and bonds in inlaying the groove, and first closes the gas layer and closes the gas layer bonding connection.
Further, the method comprises the following steps: still include a plurality of settings at the inlaying recess of inlaying the inslot, first close and be equipped with between the gas layer and the second and inlay the piece with inlaying the recess one-to-one, the piece is fixed and is closed the gas layer and close the one side of gas layer towards the second at first, and the piece is closed corresponding position on the gas layer and is pushed up corresponding inlaying in the recess with the second.
Further, the method comprises the following steps: the first air-tight layer is made of a steel plate, and the second air-tight layer is made of nylon or rubber.
The beneficial effects of the utility model are that:
1. the utility model improves the gas-closing effect inside the pressure regulating chamber by adding the first gas-closing layer and the second gas-closing layer on the inner wall of the pressure regulating chamber cover body, thereby effectively preventing the gas inside the pressure regulating chamber cover body from leaking and avoiding the direct contact of the pressure regulating chamber cover body and the internal corrosive gas from rusting;
2. the end sealing device is additionally arranged to seal the ends of the first air-tight layer and the second air-tight layer, and can simultaneously compress and fix the ends of the first air-tight layer and the second air-tight layer so as to avoid air leakage or water inflow of the ends of the air-tight layers and further improve the air-tight effect in the surge chamber cover body;
3. the utility model arranges the embedding groove on the inner wall of the pressure regulating chamber cover body as the laying space of the second airtight layer, so that the second airtight layer is embedded into the pressure regulating chamber cover body, and the second airtight layer can be limited to improve the installation stability of the second airtight layer;
4. the utility model discloses a cooperation inlaying recess and mosaic block realizes spacing to first closed gas layer to prevent that first closed gas layer from receiving rivers stamping force to take place the displacement and influence sealed effect, can effectively improve the life of the surge-chamber cover body and close the gas effect.
Drawings
Fig. 1 is a cross-sectional view of the present invention;
FIG. 2 is an enlarged schematic view of FIG. 1 at A;
fig. 3 is an enlarged schematic view of fig. 1 at B.
Labeled as: 100-pressure regulating chamber cover body, 110-sealing groove, 120-embedding groove, 130-embedding groove, 200-water inlet channel, 300-first air-tight layer, 310-sealing groove, 320-embedding block, 400-second air-tight layer, 500-sealing end device, 510-sealing cover, 511-mounting hole, 512-sealing protrusion, 520-sealing ring, 530-countersunk screw and 540-glass cement.
Detailed Description
In order to facilitate understanding of the present invention, the following description is further provided with reference to the accompanying drawings.
In the description of the present invention, it should be noted that the terms "front", "back", "left", "right", "upper", "lower", "inner", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description, and do not indicate or imply that the device or component to be referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
As shown in fig. 1, the double-layer airtight air cushion type pressure regulating chamber disclosed by the present invention is improved in structure, and a double-layer airtight layer and a sealing end device 500 are added on the basis of the pressure regulating chamber cover body 100 and the water inlet passage 200; the water inlet channel 200 is connected to the bottom of the pressure regulating chamber cover body 100, one end of the water inlet channel 200 is communicated with the inner cavity of the pressure regulating chamber cover body 100, and the other end of the water inlet channel 200 is communicated with an external diversion tunnel or tailwater tunnel; the upper part of the pressure regulating chamber cover body 100 is in a closed state, compressed air is filled in the pressure regulating chamber cover body 100 to serve as an air cushion, and water introduced from the water inlet channel 200 is contained in the lower part of the inner cavity of the pressure regulating chamber cover body 100 to serve as a water cushion.
The utility model discloses in order to improve the closed gas effect and the life of surge-chamber cover body 100, adopted and closed the gas layer structure by the first double-deck that closes gas layer 300 and second and close gas layer 400 and constitute, as shown in fig. 1, the second closes gas layer 400 and covers on the inner wall of surge-chamber cover body 100, and first gas layer 300 that closes then covers the surface that closes gas layer 400 at the second makes the second close gas layer 400 and is located between the internal face of first gas layer 300 that closes and surge-chamber cover body 100. The coverage area of the first air-lock layer 300 and the second air-lock layer 400 comprises the upper top surface and the inner circumferential surface of the inner cavity of the pressure regulating chamber cover body 100, and the lower part of the inner cavity of the pressure regulating chamber cover body 100 is a water cushion, so that the compressed air in the pressure regulating chamber cover body 100 can be isolated, the tail ends of the first air-lock layer 300 and the second air-lock layer 400 are ensured to be positioned below the water cushion, and according to the lifting height of the water cushion, the tail ends of the first air-lock layer 300 and the second air-lock layer 400 are positioned below the lowest surge water level of the pressure regulating chamber, so that the pressure regulating chamber cover body 100 can be completely isolated from the internal air. Through setting up the bilayer that closes gas layer 300 and second and close gas layer 400 and constitute and close the gas layer structure by the setting, the utility model discloses can effectively improve the leakproofness of surge-chamber cover body 100 to improve it and close the gas effect in order to avoid gas leakage, can also keep apart surge-chamber cover body 100 with inside corrosive gas, avoid corrosive gas to influence the life of surge-chamber cover body 100.
In the double-layer airtight structure, the first airtight layer 300 and the second airtight layer 400 may be bonded by waterproof glue, and the second airtight layer 400 and the inner wall surface of the pressure regulating chamber cover body 100 may be bonded by waterproof glue. And close the connection stability of gas layer 400 on surge-chamber cover body 100 in order to improve first gas layer 300 and the second of closing, the utility model discloses set up on surge-chamber cover body 100's internal wall face and closed gas layer 400 matched with the second and inlay groove 120, as shown in fig. 1 and 3, it is the depressed groove on surge-chamber cover body 100 internal wall face to inlay groove 120, the area of inlaying groove 120 and second close the area of laying of gas layer 400 and match so that the second closes gas layer 400 and can lay completely in inlaying groove 120, inlay and the waterproof glue of coating realizes the bonding of the two between groove 120 and the second close gas layer 400. By providing the insertion groove 120, the second air-lock layer 400 is completely inserted into the inner wall of the surge chamber cover body 100, and the second air-lock layer 400 can be prevented from being displaced.
Because the first airtight layer 300 can be impacted by water flow, in order to avoid displacement of the first airtight layer 300 caused by water flow stamping force, the utility model discloses set up a plurality of inlaying grooves 130 in the inlaying groove 120, set up a plurality of inlaying blocks 320 corresponding to inlaying grooves 130 one by one at the same time, the inlaying block 320 is fixed on the first airtight layer 300 facing the second airtight layer 400; the mosaic blocks 320 are embedded in the corresponding mosaic grooves 130 to limit the first gas-tight layer 300, and in addition, the mosaic blocks 320 can also jack the corresponding parts on the second gas-tight layer 400 into the corresponding mosaic grooves 130 to limit the first gas-tight layer 300 and the second gas-tight layer 400.
The first gas-tight layer 300 needs to be in direct contact with corrosive gas and water flow in the pressure regulating chamber cover body 100 and is subjected to impact force of water flow for a long time, so that a material with high strength and good corrosion resistance needs to be adopted, and the second gas-tight layer 400 is used as an intermediate layer between the first gas-tight layer 300 and the pressure regulating chamber cover body 100 and needs to have certain flexibility; therefore, in the present invention, the first air-tight layer 300 is made of steel plate, and the second air-tight layer 400 is made of nylon or rubber.
On the basis of double-deck gas structure of closing, the utility model discloses in still increased terminating set 500 and closed the end of gas layer 400 to first gas layer 300 and the second of closing and seal to prevent that the terminal infiltration double-deck gas structure of closing and the contact surface between the pressure regulating chamber cover body 100 of gas layer 400 is closed to the water in the pressure regulating chamber cover body 100 from first gas layer 300 and the second of closing. The specific structure of the end-sealing device 500 is as shown in fig. 2, the main structure of the end-sealing device 500 is a circular sealing cover 510, the sealing cover 510 is disposed around the inner wall peripheral surface of the pressure regulating chamber cover body 100, the lower portion of the sealing cover 510 is bent to make the longitudinal section of the sealing cover 510 in an "L" shape, the lower portion of the sealing cover 510 is attached to the inner wall peripheral surface of the pressure regulating chamber cover body 100 and detachably connected to the pressure regulating chamber cover body 100, and a gap into which the end of the first gas-sealing layer 300 can be inserted is disposed between the upper portion of the sealing cover 510 and the pressure regulating chamber cover body 100. With the above-structured cover 510, the end of the first gas barrier layer 300 can be wrapped while the end of the first gas barrier layer 300 is pressed against the second gas barrier layer 400. The outer surface of the cover 510 may be provided with an arc-shaped surface to buffer the water stream impact force.
As a further optimization, as shown in fig. 2, the present invention adds a sealing ring 520 to the cover 510 of the end-capping device 500. The sealing ring 520 is sleeved on the upper part of the cover 510, so that the sealing ring 520 is positioned between the upper part of the cover 510 and the first gas-tight layer 300; the gap between the upper portion of the cap 510 and the first gas-impermeable layer 300 is sealed by the addition of the sealing ring 520 to prevent water or corrosive gas from entering the capping device 500 through the gap. Correspondingly, a sealing groove 310 matched with the sealing ring 520 can be further arranged on the first gas-tight layer 300 to improve the sealing effect of the sealing ring 520, the sealing groove 310 is arranged on one surface of the first gas-tight layer 300 facing the sealing cover 510, and when the end-sealing device 500 is installed on the pressure regulating chamber cover body 100, the sealing ring 520 is embedded into the sealing groove 310 to form a snap fit.
The fixing of the middle end-capping device 500 of the present invention is realized by means of the countersunk head screw 530, as shown in fig. 2, the lower portion of the sealing cover 510 is provided with a mounting hole 511, the aperture of the mounting hole 511 matches with the outer diameter of the nut of the adopted countersunk head screw 530, a screw hole in threaded fit with the countersunk head screw 530 is preset at the corresponding position of the pressure regulating chamber cover body 100, and the countersunk head screw 530 is screwed into the screw hole after passing through the mounting hole 511 during the installation, so as to complete the fixing of the end-capping device 500; the degree of compression of the first gas-trapping layer 300 by the end-capping device 500 can be adjusted by turning the grub screw 530. In order to prevent the sunk screw 530 from being corroded, the glass cement 540 can be dripped into the mounting hole 511 to fill the mounting hole 511 after the sunk screw 530 is fastened, so that the sunk screw 511 is isolated from a water cushion in the pressure regulating chamber cover body 100, the sunk screw 511 is prevented from being washed by water flow, the sunk screw 511 is protected to prevent the sunk screw 511 from being damaged, and the service lives of the end sealing device 500 and the pressure regulating chamber cover body 100 can be effectively prolonged.
As shown in fig. 2, a sealing protrusion 512 is further added at a position where a mounting hole 511 is formed in the lower portion of the sealing cover 510, the sealing protrusion 512 is disposed around a surface of the lower portion of the sealing cover 510, which is in contact with the pressure chamber cover 100, the sealing protrusion 512 and the sealing cover 510 are of an integral structure, and an outer diameter of a screw section of the countersunk screw 530 is smaller than a width of the sealing protrusion 512, so that a screw end of the countersunk screw 530 can pass through the sealing protrusion 512; correspondingly, a sealing groove 110 matched with the sealing protrusion 512 is formed in the pressure regulating chamber cover body 100, when the end-sealing device 500 is installed, the sealing protrusion 512 is inserted into the sealing groove 110, and the countersunk screw 530 sequentially penetrates through the sealing protrusion 512 and the sealing groove 110 and then is in threaded connection with the pressure regulating chamber cover body 100. The sealing protrusion 512 and the sealing groove 110 cooperate to improve the sealing performance of the connection between the end-sealing device 500 and the surge chamber cover 100, and also provide a quick positioning function when the sealing device 500 is installed.
Claims (10)
1. Double-deck air-tight air cushion surge-chamber that closes, including surge-chamber cover body (100) and water inlet channel (200) with surge-chamber cover body (100) intercommunication, its characterized in that: the inner wall surface of the pressure regulating chamber cover body (100) is covered with a first air-tight layer (300) and a second air-tight layer (400), and the second air-tight layer (400) is positioned between the first air-tight layer (300) and the inner wall surface of the pressure regulating chamber cover body (100); the tail ends of the first air-tight layer (300) and the second air-tight layer (400) are positioned below the lowest surge water level of the surge chamber; and a sealing end device (500) for sealing the tail ends of the first air-tight layer (300) and the second air-tight layer (400) is also arranged in the pressure regulating chamber cover body (100).
2. The double-layer airtight air cushion type pressure regulating chamber as claimed in claim 1, wherein: the end sealing device (500) comprises a sealing cover (510), and the sealing cover (510) is a circular sealing cover arranged around the circumferential surface of the inner wall of the pressure regulating chamber cover body (100); the lower part of the sealing cover (510) is tightly attached to the circumferential surface of the inner wall of the pressure regulating chamber cover body (100) and is detachably connected with the pressure regulating chamber cover body (100), and a gap for inserting the tail end of the first air-tight layer (300) is formed between the upper part of the sealing cover (510) and the pressure regulating chamber cover body (100).
3. The double-decker closed-gas air-cushion pressure-regulating chamber as claimed in claim 2, wherein: the end sealing device (500) further comprises a sealing ring (520) sleeved on the upper portion of the sealing cover (510), and the sealing ring (520) is located between the upper portion of the sealing cover (510) and the first air-tight layer (300).
4. The double-layer airtight air cushion type pressure regulating chamber as claimed in claim 3, wherein: one surface of the first air-tight layer (300) facing the sealing cover (510) is provided with an inwards concave sealing groove (310), and the sealing ring (520) is in snap fit with the sealing groove (310).
5. The double-decker closed-gas air-cushion pressure-regulating chamber as claimed in claim 2, wherein: the lower part of the sealing cover (510) is provided with a mounting hole (511), and the sealing cover (510) is in threaded connection with the pressure regulating chamber cover body (100) through a countersunk screw (530) penetrating through the mounting hole (511).
6. The double-layer airtight air cushion type pressure regulating chamber as claimed in claim 5, wherein: the pressure regulating chamber cover further comprises a sealing bulge (512) fixed to the lower portion of the sealing cover (510), the sealing bulge (512) is arranged on the side, contacting with the pressure regulating chamber cover body (100), of the lower portion of the sealing cover (510) in a surrounding mode, a sealing groove (110) matched with the sealing bulge (512) is formed in the pressure regulating chamber cover body (100), the sealing bulge (512) is inserted into the sealing groove (110), and the countersunk head screw (530) penetrates through the sealing bulge (512) and the sealing groove (110) in sequence and then is in threaded connection with the pressure regulating chamber cover body (100).
7. The double-layer airtight air cushion type pressure regulating chamber as claimed in claim 5 or 6, wherein: and the mounting hole (511) is filled with glass cement (540).
8. The double-layer airtight air cushion type pressure regulating chamber as claimed in claim 1, wherein: the inner wall surface of the pressure regulating chamber cover body (100) is sunken to form an embedded groove (120) for embedding and laying a second air-tight layer (400); the second air-tight layer (400) is adhered in the embedding groove (120), and the first air-tight layer (300) is adhered and connected with the second air-tight layer (400).
9. The double-decker closed-gas air-cushion pressure-regulating chamber as claimed in claim 8, wherein: still include a plurality of settings inlay recess (130) in inlaying groove (120), first close gas layer (300) and second close and be equipped with between gas layer (400) and inlay piece (320) with inlaying recess (130) one-to-one, inlay piece (320) are fixed and are closed gas layer (300) and close the one side of gas layer (400) towards the second in first, inlay piece (320) close the second on the gas layer (400) corresponding position top go into corresponding inlay recess (130) in.
10. The double-layer airtight air cushion type surge chamber of claim 1, wherein: the first air-tight layer (300) is made of a steel plate, and the second air-tight layer (400) is made of nylon or rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221291088.3U CN217325278U (en) | 2022-05-25 | 2022-05-25 | Double-layer air-closing air cushion type surge chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221291088.3U CN217325278U (en) | 2022-05-25 | 2022-05-25 | Double-layer air-closing air cushion type surge chamber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217325278U true CN217325278U (en) | 2022-08-30 |
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ID=82986360
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221291088.3U Active CN217325278U (en) | 2022-05-25 | 2022-05-25 | Double-layer air-closing air cushion type surge chamber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217325278U (en) |
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2022
- 2022-05-25 CN CN202221291088.3U patent/CN217325278U/en active Active
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