Box transformer foundation internal ventilation and dehumidification system

Abstract

The application provides a box transformer foundation internal ventilation and dehumidification system and relates to the technical field of box transformer foundation dehumidification and moisture-proof. Mainly comprising a retainer, a guide structure, a dehumidification mechanism, a water absorption mechanism and a negative pressure exhaust and drainage mechanism which are slidably assembled in the box transformer foundation. The retainer can vertically reciprocate to carry multiple sections of self-adaptable dehumidification strips to realize dynamic traversal dehumidification of the inner wall of the foundation. Meanwhile, the vertical movement of the retainer is converted into the horizontal sliding movement of the top water absorption strip by using a pure mechanical linkage structure to realize synchronous and collaborative operation of side wall dehumidification and top water absorption. In cooperation with the negative pressure suction structure, the active discharge of accumulated water, moisture and humid air is realized, so that the box transformer foundation is internally free of dead angles, secondary condensation and long-term dehumidification. The application is suitable for long-term unattended operation of outdoor box transformers, has good dehumidification stability, high universality and low operation and maintenance cost.

Description

Technical Field

[0001] This invention relates to the field of dehumidification structure technology, and more specifically, to a ventilation and dehumidification system for the interior of a transformer substation foundation. Background Technology

[0002] Currently, the industry's conventional methods for moisture prevention and dehumidification of transformer substation foundations are mainly divided into three categories: passive ventilation, electric heating dehumidification, and fixed dehumidification equipment. Among them, passive ventilation relies on natural air exchange through reserved ventilation holes, which is greatly affected by environmental wind and rain. The air circulation inside the sealed cavity is poor, the dehumidification efficiency is extremely low, and the ventilation holes are easily buried by soil and vegetation, resulting in long-term failure. Electric heating dehumidification uses heating elements to raise the internal temperature and evaporate water vapor, but the air's moisture-holding capacity increases after the temperature rises. Once the ambient temperature drops sharply, the supersaturated water vapor will condense again, especially easily forming a large area of ​​water film on the top of the transformer substation, exacerbating the moisture risk. Fixed dehumidifiers, absorbent cotton, and other dehumidification structures are fixed-point installations, which can only dehumidify local areas. Moisture in blind spots such as the corners of the foundation inner wall and the top cannot be removed, and the absorbent materials are easily saturated with water, requiring frequent manual replacement and maintenance, resulting in high operation and maintenance costs and making them unsuitable for long-term unattended outdoor operation. Summary of the Invention

[0003] The purpose of this invention is to provide an internal ventilation and dehumidification system for transformer substation foundations, which addresses the shortcomings of existing technologies and solves the problems mentioned in the background.

[0004] The technical solution of this invention is implemented as follows:

[0005] The present invention provides a ventilation and dehumidification system for the interior of a transformer substation foundation, including a retainer installed inside the transformer substation foundation, the retainer being slidably disposed within the transformer substation foundation in a vertical direction;

[0006] The transformer substation foundation is equipped with a guide structure to guide the cage to move vertically.

[0007] The outer wall of the cage is surrounded by dehumidifying strips, which are multi-segmented and all segments are installed on the outer wall of the cage.

[0008] The retainer is equipped with a pushing structure for driving the dehumidifying strip to fit closer to the inner wall of the transformer substation foundation; the side wall of the transformer substation foundation is equipped with a dehumidifying pipe that communicates with the dehumidifying strip.

[0009] A water-absorbing strip is slidably installed on the top of the cage in the horizontal direction, and a drive structure is provided in the guide structure to drive the cage to reciprocate in the vertical direction. The water-absorbing strip is connected to the drive structure in a transmission connection.

[0010] In some technical solutions of the present invention, the guide structure includes multiple columns fixed in the transformer substation foundation, and the side wall of the retainer is provided with a number of guide openings corresponding to the columns. Guide wheels are installed in the guide openings, and the outer side wall of the column is provided with a guide groove in the vertical direction. The guide wheel is partially embedded in the guide groove and rolls with the guide groove.

[0011] In some technical solutions of the present invention, the pushing structure includes a push rod assembly installed on the side wall of the retainer, the telescopic end of the push rod assembly being hinged to the dehumidifying strip; a water collection trough is provided on the side wall opposite to the inner wall of the transformer substation foundation, and the water collection trough is connected to the dehumidifying pipe.

[0012] In some technical solutions of the present invention, the drive structure includes two drive wheels installed inside the column and a transmission chain. The transmission chain is connected end to end and wrapped around the outside of the two drive wheels. A drive motor connected to one of the drive wheels is installed inside the column. A connecting seat connected to the retainer is fixed on the transmission chain.

[0013] In some technical solutions of the present invention, a mounting groove is provided in the cage along the horizontal direction, and the absorbent strip is partially slidably disposed in the mounting groove; two gears and a toothed belt are rotatably installed inside the mounting groove, the toothed belt is connected end to end and wrapped around the outside of the two gears, the mounting groove is connected to the guide opening, and one of the gears is partially embedded in the guide opening; a toothed rack that meshes with the gear is fixed on the outer wall of the column, and the toothed belt is fixedly connected to the outer wall of the absorbent strip.

[0014] In some technical solutions of the present invention, a collection groove is provided on the side wall where the water-absorbing strip contacts the top of the transformer substation foundation, and the collection groove is connected to a collection pipe; flexible water-blocking strips are provided on both sides of the collection groove, and several pipes are arranged inside the water-blocking strips, which are connected to the inside of the collection groove.

[0015] In some technical solutions of the present invention, a negative pressure device is installed on the outer wall of the transformer substation foundation, and the negative pressure device is connected to the collection pipeline.

[0016] In some technical solutions of the present invention, the cage is provided with a plurality of suction pipes, and the plurality of suction pipes are all connected to the collection pipes.

[0017] In some technical solutions of the present invention, a water-absorbing part is provided on the side wall of the dehumidifier strip that contacts the inner wall of the transformer substation foundation, and a connecting pipe is provided inside the water-absorbing part, which is connected to a negative pressure device.

[0018] In some technical solutions of the present invention, the water-absorbing part is hinged to the outer wall of the dehumidifying strip, and a torsion spring for elastic reset of the water-absorbing part is installed on the dehumidifying strip. The torsion spring is assembled at the hinge position of the water-absorbing part.

[0019] Compared with the prior art, the present invention has at least the following advantages or beneficial effects: a retainer that slides vertically along the inside of the transformer substation foundation achieves precise vertical reciprocating motion of the retainer by relying on a guide structure; multiple rotatable dehumidifying strips are arranged around the outer wall of the retainer, and a pushing structure is provided to drive the dehumidifying strips to conform to the inner wall of the foundation, so as to achieve adaptive conforming dehumidification of the side wall; a horizontally sliding water-absorbing strip is set on the top of the retainer, and the driving structure inside the guide structure provides the power for the overall structure to move, and establishes a transmission connection between the water-absorbing strip and the driving structure, so that the vertical reciprocating motion of the retainer and the horizontal sliding motion of the water-absorbing strip are synchronized; at the same time, a dehumidifying pipe is provided to discharge moisture and water accumulation, which can actively conform to the inner wall of the transformer substation foundation, directly contact and remove the condensation film and moisture on the wall surface, avoid the secondary condensation defects caused by temperature difference in traditional heating dehumidification, and can maintain a dry environment inside the transformer substation foundation for a long time. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the installation structure of the ventilation and dehumidification system inside the transformer substation foundation in this invention.

[0021] Figure 2 This is a schematic diagram of the installation structure of the cage and guide frame in this invention.

[0022] Figure 3 This is a schematic diagram of the internal structure of the cage in this invention.

[0023] Figure 4 for Figure 2 A magnified schematic diagram of the structure at point A in the middle.

[0024] Figure 5 This is a cross-sectional view of the absorbent strip in this invention.

[0025] Figure 6 This is a cross-sectional view of the dehumidification strip in this invention.

[0026] Figure 7 for Figure 5 A magnified schematic diagram of the structure at point B in the middle.

[0027] Reference numerals: 1-Cage; 101-Guide port; 102-Mounting groove; 2-Guide structure; 201-Column; 202-Guide wheel; 203-Guide groove; 3-Dehumidifying strip; 301-Water collection tank; 302-Water absorption part; 303-Connecting pipe; 304-Torsion spring; 4-Pushing structure; 401-Push rod assembly; 5-Dehumidifying pipe; 6-Water absorption strip; 601-Collection tank; 602-Flexible water baffle; 603-Flow guide pipe; 7-Drive structure; 701-Transmission wheel; 702-Transmission chain; 703-Drive motor; 704-Connecting seat; 801-Gear; 802-Toothed belt; 803-Rack; 9-Collection pipe; 10-Negative pressure device; 11-Suction pipe. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0030] Example

[0031] This invention provides a ventilation and dehumidification system for the interior of a transformer substation foundation, such as... Figures 1-7 As shown, the cage 1, assembled inside the transformer substation foundation, serves as the core load-bearing structure and can slide vertically within the foundation. It bears the assembly and movement load for all dehumidification, water absorption, and transmission structures. A guide structure 2, consisting of multiple columns 201, is fixedly installed inside the foundation. T-shaped, rectangular, or wedge-shaped guide grooves 203 are formed on the outer side of each column 201 along the vertical direction. Guide openings 101, corresponding one-to-one with the columns 201, are formed on the sidewalls of the cage 1. Guide wheels 202 are installed inside the guide openings 101, rolling and embedded within the guide grooves 203. These guide wheels precisely limit and guide the vertical reciprocating motion of the cage 1, effectively restricting horizontal deviation and operational vibration.

[0032] Multiple independently rotatable dehumidifying strips 3 are arranged around the outer wall of the retainer 1. The dehumidifying strips 3 are rotatably mounted on the outer wall of the retainer 1 via long shafts. The side wall of the retainer 1 is equipped with a pushing structure 4 consisting of an electric push rod or a hydraulic push rod. The telescopic end of the push rod assembly 401 is hinged to the dehumidifying strips 3, which can drive the multiple dehumidifying strips 3 to flip outward to fit against the inner wall of the transformer foundation and rotate inward to return to their original position. A water collection trough 301 is provided on the side of the dehumidifying strip 3 that fits against the wall. The water collection trough 301 is connected to the dehumidifying pipe 5 arranged on the side wall of the transformer foundation to realize the centralized drainage of water and moisture accumulated on the side wall. The working surface of the dehumidifying strip 3 is equipped with an adaptively deformable water absorption part 302. The water absorption part 302 is hinged to the dehumidifying strip 3. A torsion spring 304 is set at the hinge position to realize elastic return. A connecting pipe 303 is arranged inside the water absorption part 302 for connecting with negative pressure airflow to achieve targeted dehumidification.

[0033] One of the columns 201 within the guide structure 2 integrates a drive structure 7. The drive structure 7 consists of a transmission wheel 701, a closed-loop transmission chain 702, and a drive motor 703. The drive motor 703 is connected to one of the transmission wheels 701. The transmission chain 702 is fixedly connected to the retainer 1 via a connecting seat 704, driving the retainer 1 to perform continuous, periodic vertical reciprocating motion along the guide structure 2. A mounting groove 102 is horizontally formed at the top of the retainer 1. Gears 801 and a closed-loop toothed belt 802 are assembled inside the mounting groove 102. One set of gears 801 is partially embedded in the guide opening 101, meshing with a rack 803 fixed to the outside of the column 201. This forms a purely mechanical linkage transmission mechanism that converts vertical to horizontal motion, thereby driving the absorbent strip 6 to reciprocate on the retainer 1 along the guide of the mounting groove 102.

[0034] The water-absorbing strip 6 is slidably installed inside the mounting slot 102. The water-absorbing strip 6 is fixedly connected to the toothed belt 802 and can slide horizontally back and forth with the toothed belt 802. A collection slot 601 is opened on the end face of the water-absorbing strip 6 that contacts the top of the transformer foundation. Flexible water-blocking strips 602 are arranged on both sides of the collection slot 601. The water-blocking strips are made of water-absorbing materials such as sponges. Multiple guide pipes 603 are arranged inside the water-blocking strips. All guide pipes 603 are connected to the collection pipe 9. A negative pressure device 10 is installed on the outer wall of the transformer foundation. The negative pressure device 10 is connected to the collection pipe 9, several suction pipes 11 arranged inside the retainer 1, and the connecting pipe 303 of the water-absorbing part 302, respectively, to construct a three-dimensional multi-point negative pressure suction and dehumidification system, which simultaneously realizes the collection of water accumulated on the top, the extraction of internal moisture, and the targeted removal of water film on the inner wall.

[0035] The overall structure adopts a single-power mechanical linkage design. Relying on a set of drive motors 703, it can realize the synchronous and coordinated operation of the vertical reciprocating motion of the cage 1, the adaptive fitting motion of the dehumidifying strip 3, and the horizontal full-range sliding motion of the water absorption strip 6. Combined with the multi-pipe confluence negative pressure dehumidification structure, it completely eliminates the limitations of traditional fixed point dehumidification and passive ventilation dehumidification. The structure is compact, highly integrated, and reliable in operation, and is suitable for the complex operating conditions of outdoor transformer substation foundations that are damp for a long time and unattended.

[0036] The overall operation process of this system is divided into five steps: equipment startup and alignment preparation, sidewall adaptive bonding dehumidification, top linkage sliding water absorption, full-area negative pressure ventilation and dehumidification, and structural reset cycle operation. The specific process is as follows:

[0037] After the system is powered on, the drive motor 703 inside the column 201 starts working, driving the transmission wheel 701 and the closed-loop transmission chain 702 to rotate cyclically. Through the connecting seat 704 on the chain, the retainer 1 is pulled to make vertical reciprocating lifting and lowering movements along the guide groove 203 of the column 201. The guide wheel 202 in the guide opening 101 on the side wall of the retainer 1 rolls precisely along the guide groove 203, constraining the movement trajectory of the retainer 1 throughout the process, preventing shaking, deviation and jamming, ensuring that the retainer 1 lifts and lowers smoothly and moves accurately, providing a stable structural foundation for subsequent dehumidification operations.

[0038] While the retainer 1 is moving up and down, the push rod assembly 401 on the side wall of the retainer 1 extends and retracts synchronously, pushing the multi-segment dehumidifying strips 3 outward through the hinged connection, so that the dehumidifying strips 3 fit tightly against the inner wall of the transformer substation foundation. The water-absorbing part 302 on the surface of the dehumidifying strip 3 adapts to the wall surface, adsorbing the condensation and moisture generated on the inner wall of the foundation. At the same time, the water-absorbing part 302 is subjected to a small rotational deformation due to the pressure of the wall surface, adapting to the concave and convex structure of the inner wall and assembly errors. When it detaches from the wall surface, the torsion spring 304 releases elastic potential energy to drive the water-absorbing part 302 to automatically reset, maintaining a good fit. The adsorbed and collected water and condensation converge into the water collection tank 301 of the dehumidifying strip 3, and are initially discharged through the dehumidification pipe 5.

[0039] During the vertical lifting and lowering of the cage 1, the gear 801 embedded in the guide port 101 continuously meshes with the rack 803 fixed to the column 201, converting the vertical linear motion of the cage 1 into the rotational motion of the gear 801, which in turn drives the toothed belt 802 to operate in a closed loop, pulling the water-absorbing strip 6 to slide synchronously horizontally back and forth within the mounting groove 102 at the top of the cage 1. The water-absorbing strip 6 wipes and scrapes away condensation and accumulated water on the inner wall of the top of the transformer foundation throughout the process. The accumulated water is collected inside the collection tank 601, and the flexible water-blocking strips 602 on both sides adaptively conform to the top wall surface to form a closed water collection area, preventing secondary damping caused by dripping and overflowing water.

[0040] Throughout the system operation, the negative pressure equipment 10 outside the transformer substation foundation operates continuously, creating a constant negative pressure differential inside each connecting pipe 303. The negative pressure airflow rapidly extracts accumulated water and moisture from the collection tank 601 through the collection pipe 9 and the internal pipes of the water baffle strip; on the other hand, it extracts suspended humid air and scattered water vapor inside the foundation through the suction pipes 11 arranged at multiple points inside the retainer 1; simultaneously, it targets and extracts the moisture adsorbed by the dehumidifying strip 3 through the connecting pipes 303 of the water absorption section 302, preventing the water absorption section 302 from becoming saturated and failing, thus achieving all-round synchronous dehumidification and drainage of the side walls, top, and internal cavity.

[0041] After a single stroke is completed, the drive motor 703 continues to run, driving the cage 1 to reciprocate. All mechanical structures automatically reset and enter the next dehumidification cycle. Through dynamic traversal, the moisture and condensation inside the foundation are continuously cleaned, maintaining a dry environment inside the transformer foundation, thus achieving all-weather automated and unattended ventilation and dehumidification operations.

[0042] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A ventilation and dehumidification system for the interior of a prefabricated substation foundation, characterized in that, Includes a retainer (1) installed inside the transformer substation foundation, the retainer (1) being slidably disposed inside the transformer substation foundation in the vertical direction; The transformer substation foundation is equipped with a guide structure (2) for guiding the cage (1) to move in the vertical direction; The outer wall of the retainer (1) is surrounded by a dehumidifying strip (3), which is a multi-segment structure, and all segments of the dehumidifying strip (3) are installed on the outer wall of the retainer (1). The retainer (1) is provided with a pushing structure (4) for driving the dehumidifying strip (3) to fit closer to the inner wall of the transformer substation foundation; the side wall of the transformer substation foundation is provided with a dehumidifying pipe (5) that communicates with the dehumidifying strip (3). The top of the retainer (1) is provided with a water-absorbing strip (6) that slides horizontally. The guide structure (2) is provided with a drive structure (7) for driving the retainer (1) to reciprocate vertically. The water-absorbing strip (6) is connected to the drive structure (7) in a transmission manner.

2. The ventilation and dehumidification system for the interior of a transformer substation foundation according to claim 1, characterized in that, The guide structure (2) includes multiple columns (201) fixed in the transformer substation foundation. The side wall of the retainer (1) has several guide openings (101) corresponding to the columns (201). Guide wheels (202) are installed in the guide openings (101). The outer side wall of the column (201) has a guide groove (203) in the vertical direction. The guide wheel (202) is partially embedded in the guide groove (203).

3. A ventilation and dehumidification system for the interior of a transformer substation foundation according to claim 1 or 2, characterized in that, The pushing structure (4) includes a push rod assembly (401) installed on the side wall of the retainer (1), the telescopic end of the push rod assembly (401) is hinged to the dehumidifying strip (3); the dehumidifying strip (3) has a water collection trough (301) on the side wall opposite to the inner wall of the transformer foundation, and the water collection trough (301) is connected to the dehumidifying pipe (5).

4. The ventilation and dehumidification system inside a transformer substation foundation according to claim 2, characterized in that, The drive structure (7) includes two drive wheels (701) installed inside the column (201) and a transmission chain (702). The transmission chain (702) is connected end to end and wrapped around the outside of the two drive wheels (701). A drive motor (703) connected to one of the drive wheels (701) is installed inside the column (201). A connecting seat (704) connected to the cage (1) is fixed on the transmission chain (702).

5. The ventilation and dehumidification system inside a transformer substation foundation according to claim 2, characterized in that, The retainer (1) has a horizontally oriented mounting groove (102) inside, and the absorbent strip (6) is partially slidably disposed in the mounting groove (102). Two gears (801) and a toothed belt (802) are rotatably mounted inside the mounting groove (102). The toothed belt (802) is connected end to end and wrapped around the outside of the two gears (801). The mounting groove (102) is connected to the guide opening (101), and one of the gears (801) is partially embedded in the guide opening (101). A rack (803) that meshes with the gear (801) is fixed on the outer wall of the column (201), and the toothed belt (802) is fixedly connected to the outer wall of the absorbent strip (6).

6. A ventilation and dehumidification system for the interior of a transformer substation foundation according to claim 1 or 5, characterized in that, The water-absorbing strip (6) has a collection groove (601) on the side wall that contacts the top of the transformer foundation. The collection groove (601) is connected to a collection pipe (9) that is connected to the dehumidification pipe (5). Flexible water-blocking strips (602) are provided on both sides of the collection groove (601). Several guide pipes (603) are arranged inside the water-blocking strips. The guide pipes (603) are connected to the inside of the collection groove (601).

7. The ventilation and dehumidification system inside a transformer substation foundation according to claim 6, characterized in that, A negative pressure device (10) is installed on the outer wall of the transformer substation foundation, and the negative pressure device (10) is connected to the collection pipe (9).

8. The ventilation and dehumidification system inside a transformer substation foundation according to claim 7, characterized in that, The holder (1) is provided with a plurality of suction pipes (11), and the plurality of suction pipes (11) are all connected to the collection pipe (9).

9. The ventilation and dehumidification system inside a transformer substation foundation according to claim 3, characterized in that, The dehumidifying strip (3) has a water-absorbing part (302) on the side wall that contacts the inner wall of the transformer foundation. The water-absorbing part (302) has a connecting pipe (303) inside, and the connecting pipe (303) is connected to the negative pressure device (10).

10. The ventilation and dehumidification system inside a transformer substation foundation according to claim 9, characterized in that, The water-absorbing part (302) is hinged to the outer wall of the dehumidifying strip (3). A torsion spring (304) for elastic reset of the water-absorbing part (302) is installed on the dehumidifying strip (3). The torsion spring (304) is assembled at the hinge position of the water-absorbing part (302).

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