CN-122025354-A - Solid buried type amorphous alloy transformer

CN122025354ACN 122025354 ACN122025354 ACN 122025354ACN-122025354-A

Abstract

The invention relates to the technical field of power transformers and discloses a solid buried amorphous alloy transformer which comprises a pit, a box body and a water collecting box, and further comprises a transformer body, an air inlet pipe, a buffering mechanism, a pre-cooling assembly and a pre-cooling assembly, wherein the transformer body is arranged in the box body, a flow guiding air inlet piece is arranged at the bottom of the transformer body, the air inlet pipe is communicated with the flow guiding air inlet piece after penetrating through the water collecting box and the box body, the buffering mechanism is arranged between the transformer body and the box body, when the temperature of the transformer body rises, the buffering mechanism is increased in rigidity, the venturi pipe is communicated with the buffering mechanism and is used for converting vibration energy of the buffering mechanism into airflow power, and the pre-cooling assembly is arranged between the water collecting box and the air inlet pipe and is driven by the venturi pipe and is used for intermittently cooling air in the air inlet pipe.

Inventors

WU YIJUN
LIANG YUSEN
XIAO WEIQIANG
Lu Yingshan
TAN JIEBIN
LIANG XIAONI

Assignees

广东粤特电力集团有限公司
广东粤特变压器有限公司

Dates

Publication Date: 20260512
Application Date: 20260416

Claims (10)

1. The utility model provides a solid-state buried amorphous alloy transformer, includes pit (1), box (2) and water collection box (3), its characterized in that still includes: the transformer body (5) is arranged in the box body (2), and a diversion air inlet piece (6) is arranged at the bottom of the transformer body (5); an air inlet pipe (8) penetrates through the water collecting box (3) and the box body (2) and is communicated with the diversion air inlet piece (6); the buffer mechanism is arranged between the transformer body (5) and the box body (2), and when the temperature of the transformer body (5) rises, the rigidity of the buffer mechanism is increased; a venturi (22) in communication with the buffer mechanism for converting vibrational energy of the buffer mechanism into airflow power; The precooling component is arranged between the water collecting box (3) and the air inlet pipe (8) and driven by the Venturi tube (22) and is used for intermittently cooling air in the air inlet pipe (8); The flow guiding components are arranged on two sides of the transformer body (5) and driven by the Venturi tube (22) and are used for intermittently swinging and blowing in the box body (2).
2. The solid-state buried amorphous alloy transformer according to claim 1, wherein the buffer mechanism comprises a bracket (17), the bracket (17) is mounted on the outer wall of the transformer body (5), a groove (18) is formed in one side, close to the box body (2), of the bracket (17), a sealing plate (20) is slidably connected in the groove (18), an energy storage agent (19) is arranged between the sealing plate (20) and the groove (18), and a damping piston assembly (21) is arranged between the sealing plate (20) and the box body (2).
3. A solid state buried amorphous alloy transformer according to claim 2, characterized in that the energy storage agent (19) is a phase change material, the support (17) is a heat conducting material, when the temperature of the transformer body (5) increases, heat is transferred from the support (17) to the energy storage agent (19), the energy storage agent (19) absorbs heat gradually changing from a solid state to a liquid state and the volume increases.
4. The solid-state buried amorphous alloy transformer according to claim 2, wherein the damping piston assembly (21) comprises an outer cylinder (211), a piston rod (214) and a piston ring (213), the outer cylinder (211) is mounted on the inner wall of the box body (2), a sealing head (212) is mounted in the outer cylinder (211), the piston rod (214) is slidably connected with the sealing head (212), the piston ring (213) is mounted on the piston rod (214), the piston ring (213) is slidably connected with the outer cylinder (211), one end of the piston rod (214) is connected with a sealing plate (20), and a limiting plate (216) is mounted on the other end of the piston rod (214).
5. The solid buried amorphous alloy transformer according to claim 4, wherein a main air chamber (217) and a buffer air chamber (218) are respectively formed at two sides of the piston ring (213), a balance air chamber (219) is formed at one side of the sealing head (212) far away from the piston ring (213), an orifice (215) is formed on the piston ring (213), and the main air chamber (217) is communicated with the buffer air chamber (218) through the orifice (215).
6. The solid state buried amorphous alloy transformer according to claim 5, wherein the venturi (22) comprises a constriction, a throat and a diffuser, the constriction being in communication with the main plenum (217) and the diffuser being in communication with the equilibrium plenum (219).
7. The solid-state buried amorphous alloy transformer according to claim 6, wherein the pre-cooling assembly comprises a spiral tube (11), the spiral tube (11) is wound outside the air inlet pipe (8), a drain hole (12) is formed in the bottom of the water collecting box (3), and the spiral tube (11) is communicated with the drain hole (12).
8. The solid-state buried amorphous alloy transformer according to claim 7, wherein a communicating groove (13) communicated with the throat is formed in the bottom of the water collecting box (3), a sealing sliding block (15) is slidably connected in the communicating groove (13), a spring (14) is installed between the sealing sliding block (15) and the groove (18), a through hole (16) is formed in the sealing sliding block (15), and when the venturi tube (22) works, the sealing sliding block (15) moves to enable the through hole (16) to coincide with the water discharging hole (12), and water in the water collecting box (3) flows into the spiral tube (11).
9. The solid-state buried amorphous alloy transformer according to claim 6, wherein the diversion assembly comprises a pneumatic control member (23) and a diversion plate (24), the pneumatic control member (23) is installed at the bottom of the box body (2), the diversion plate (24) is rotatably connected to the output end of the pneumatic control member (23), the diversion air inlet member (6) is provided with an overflow hole (10) corresponding to the diversion plate (24), and the pneumatic control member (23) is communicated with the throat of the other venturi tube (22).
10. The solid-state buried amorphous alloy transformer according to claim 1, further comprising a liquid level detector (26) and a return pipe (25), wherein the liquid level detector (26) is mounted on the inner wall of the water collection box (3), the return pipe (25) is communicated with the bottom of the water collection box (3), and an electromagnetic valve electrically connected with the liquid level detector (26) is arranged in the return pipe (25).

Description

Solid buried type amorphous alloy transformer Technical Field The invention relates to the technical field of power transformers, in particular to a solid buried amorphous alloy transformer. Background Along with the rapid development of urban power grid construction, the installation mode of the distribution transformer is gradually changed from traditional ground installation to underground concealed installation, and the buried transformer has wide application in the fields of urban power distribution network reconstruction, landscape distribution engineering and the like due to the advantages of no occupation of ground space, low noise, good attractiveness and the like. The amorphous alloy transformer adopts an amorphous alloy material as an iron core, has the technical advantages of low no-load loss, obvious energy-saving effect and the like compared with the traditional silicon steel sheet transformer, combines the amorphous alloy transformer with a buried installation mode, and can further improve the comprehensive performance of distribution equipment. In addition, the buffer supporting structure of the existing transformer is mainly of a structure with fixed rigidity, so that the supporting rigidity is difficult to self-adaptively adjust according to the running state of the transformer, and the sufficient stability is difficult to provide, so that the vibration is aggravated, or the supporting force is large, and the transformer is deformed. Disclosure of Invention The invention provides a solid buried amorphous alloy transformer, which can adaptively adjust the supporting rigidity according to the running state of the transformer through a buffer mechanism and a venturi tube, can provide stable supporting force for the transformer, and can avoid the deformation of the transformer. The invention provides the following technical scheme: The solid buried amorphous alloy transformer comprises a pit, a box body and a water collecting box, and further comprises a transformer body, a flow guiding air inlet piece, an air inlet pipe, a buffer mechanism, a pre-cooling assembly and a flow guiding assembly, wherein the transformer body is arranged inside the box body, the bottom of the transformer body is provided with the flow guiding air inlet piece, the air inlet pipe penetrates through the water collecting box and the box body and then is communicated with the flow guiding air inlet piece, the buffer mechanism is arranged between the transformer body and the box body, when the temperature of the transformer body rises, the rigidity of the buffer mechanism is increased, the venturi pipe is communicated with the buffer mechanism and is used for converting vibration energy of the buffer mechanism into airflow power, the pre-cooling assembly is arranged between the water collecting box and the air inlet pipe and driven by the venturi pipe and is used for intermittently cooling air in the air inlet pipe, and the flow guiding assembly is arranged on two sides of the transformer body and driven by the venturi pipe and is used for intermittently swinging and supplying air in the box body. As a preferable technical scheme of the invention, the buffer mechanism comprises a support, the support is arranged on the outer wall of the transformer body, a groove is formed in one side, close to the box body, of the support, a sealing plate is connected in a sliding mode in the groove, an energy storage agent is arranged between the sealing plate and the groove, and a damping piston assembly is arranged between the sealing plate and the box body. As a preferable technical scheme of the invention, the energy storage agent is a phase change material, the bracket is a heat conduction material, when the temperature of the transformer body is increased, heat is transferred from the bracket to the energy storage agent, and the energy storage agent absorbs heat and gradually converts from a solid state to a liquid state, and the volume is increased. As a preferable technical scheme of the invention, the damping piston assembly comprises an outer cylinder, a piston rod and a piston ring, wherein the outer cylinder is arranged on the inner wall of a box body, a sealing head is arranged in the outer cylinder, the piston rod is in sliding connection with the sealing head, the piston ring is arranged on the piston rod and is in sliding connection with the outer cylinder, one end of the piston rod is connected with a sealing plate, and a limiting plate is arranged at the other end of the piston rod. As a preferable technical scheme of the invention, a main air chamber and a buffer air chamber are respectively formed at two sides of the piston ring, a balance air chamber is formed at one side of the sealing head far away from the piston ring, an orifice is formed on the piston ring, and the main air chamber is communicated with the buffer air chamber through the orifice. As a preferred embodiment of the present invention, the venturi t