Pressure relief type transformer oil conservator
By designing a pressure-relief transformer oil conservator, combined with a pressure relief device and a heat dissipation device, the problems of low heat dissipation efficiency and poor pressure relief capacity of oil-immersed transformers are solved, achieving safe pressure relief and efficient heat dissipation of the transformer.
Patent Information
- Application Number
- CN202423296483.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2026-01-30
- Estimated Expiration
- 2034-12-31
AI Technical Summary
Existing oil-immersed transformers have low heat dissipation efficiency and poor pressure relief capacity, which leads to a continuous increase in pressure in the oil tank and oil conservator, posing a risk of explosion.
A pressure-relief transformer oil conservator was designed, which includes a pressure relief device and a heat dissipation device. Through components such as telescopic section, drain pipe, liquid outlet pipe, oil discharge hole, and heat dissipation fins, the oil pressure is relieved and heat is dissipated, ensuring that the oil is safely depressurized and cooled when overloaded.
It effectively reduces the pressure when the transformer is overloaded, ensures safe pressure relief, and cools the oil through a heat dissipation device, thereby improving the safety and heat dissipation efficiency of the transformer.
Smart Images
Figure CN223857973U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to oil -immersed transformer technical field especially relates to a pressure relief type transformer oil pillow. BACKGROUND
[0002] Oil -immersed transformer is in sealed state under normal state, and its inside stores the iron core, winding and other components soaked by oil, and the oil can timely transmit the heat generated by the iron core and winding to the heat dissipation device, achieves the effect of cooling the transformer, when the transformer appears overload, the iron core, winding and other components will produce a large amount of heat, so that the oil temperature in the oil tank will sharply rise, because the oil will produce volume expansion after absorbing heat, so the pressure of the tank body and oil pillow is continuously increased, therefore, the heat dissipation device that can relieve pressure is installed on the oil pillow to reduce the pressure of the tank body and oil pillow, and the transformer is cooled. SUMMARY
[0003] The utility model discloses a pressure relief type transformer oil pillow to solve the low heat dissipation efficiency, poor pressure relief capacity of the prior oil -immersed transformer.
[0004] To achieve the above object, the technical scheme of the utility model is as follows:
[0005] A pressure relief type transformer oil pillow, comprising:
[0006] Oil -immersed transformer body;Oil pillow, fixedly arranged at one end of the top of the oil -immersed transformer body;Pressure relief device, fixedly arranged at one side of the oil pillow, the pressure relief device includes the telescopic section fixedly arranged at one side of the oil pillow and the flow pipe fixedly arranged at the side surface of the telescopic section, the flow pipe is slidably arranged with the liquid outlet pipe in the inside, the liquid outlet pipe is uniformly provided with a plurality of oil discharge holes in the circumferential direction of the end away from the oil pillow;Heat dissipation device, fixedly arranged at one side of the oil pillow.
[0007] Further, the two ends of the telescopic section are fixedly arranged with fixed rings in the circumferential direction of the outer ring of the telescopic section, the outer ring of the telescopic section is slidably arranged with a limiting slide bar on the fixed ring, and the spring is arranged between the two fixed rings on the limiting slide bar.
[0008] Further, the middle position of the flow pipe is uniformly provided with a strip-shaped liquid outlet groove in the circumferential direction, and the first sealing ring is arranged between the inner ring of the flow pipe and the outer ring of the liquid outlet pipe on the two sides of the strip-shaped liquid outlet groove.
[0009] Further, the oil pillow is fixedly arranged with a support frame on the side close to the telescopic section, and the end of the liquid outlet pipe away from the oil discharge hole is fixedly arranged on the support frame.
[0010] Further, the heat dissipation device comprises a liquid inlet pipe fixedly arranged at the side of the oil pillow, and heat dissipation fins fixedly arranged at the bottom of the liquid inlet pipe, and a backflow pipe fixedly arranged between the bottom of the heat dissipation fins and the oil pillow.
[0011] Further, a second sealing ring is arranged between the inner ring of the liquid inlet pipe and the outer ring of the flow-off pipe, close to one end of the telescopic section.
[0012] Compared with the prior art, the utility model has the following beneficial effects:
[0013] The pressure relief type transformer oil pillow has the pressure relief device arranged, so that the pressure relief protection of the transformer during overload operation is ensured, and the heat dissipation device arranged, so that the oil flowing out of the pressure relief device is cooled and then backflows into the oil pillow. BRIEF DESCRIPTION OF DRAWINGS
[0014] The drawings constituting a part of the utility model are used to provide further understanding of the utility model, and the illustrative embodiments of the utility model and the description thereof are used to explain the utility model, and do not constitute improper limitation on the utility model.
[0015] Figure 1 It is a perspective view of the pressure relief type transformer oil pillow according to the utility model embodiment;
[0016] Figure 2 It is a side view of the pressure relief type transformer oil pillow according to the utility model embodiment;
[0017] Figure 3 It is a perspective view of the telescopic section according to the utility model embodiment. Figure 2 It is a sectional view of the overall structure of the pressure relief device and the heat dissipation device at I;
[0018] Figure 4 It is a perspective view of the telescopic section according to the utility model embodiment.
[0019] The reference signs are as follows: 1, oil-immersed transformer body; 2, oil pillow; 201, support frame; 3, pressure relief device; 301, telescopic section; 3011, fixing ring; 3012, limiting sliding rod; 3013, spring; 302, flow-off pipe; 3021, strip-shaped liquid outlet groove; 3022, first sealing ring; 303, liquid outlet pipe; 3031, oil discharge hole; 4, heat dissipation device; 401, liquid inlet pipe; 402, heat dissipation fin; 403, backflow pipe; 404, mounting rack; 405, second sealing ring. DETAILED DESCRIPTION
[0020] It should be noted that the embodiments in the utility model and the features in the embodiments can be combined with each other without conflict.
[0021] In the description of the utility model, it should be noted that if the terms indicating the orientation or position relationship such as "upper", "lower", "inner", "back" appear, they are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model. In addition, if the terms "first", "second" and the like appear, they are also only for the purpose of description, and cannot be understood as indicating or implying relative importance.
[0022] The utility model will be described in detail below with reference to the drawings and in combination with the embodiments.
[0023] The embodiment relates to a pressure relief type transformer oil pillow, and as a whole, as shown in Figure 1 and Figure 3 , it comprises an oil-immersed transformer body 1, an oil pillow 2, a pressure relief device 3, and a heat dissipation device 4.
[0024] The oil pillow 2 is fixedly arranged at one end of the top of the oil-immersed transformer body 1, the pressure relief device 3 is fixedly arranged at one side of the oil pillow 2, the pressure relief device 3 comprises an extension section 301 fixedly arranged at one side of the oil pillow 2 and a flow-off pipe 302 fixedly arranged at the side surface of the extension section 301, the flow-off pipe 302 is slidably provided with a liquid outlet pipe 303 inside, the liquid outlet pipe 303 is uniformly provided with a plurality of oil discharge holes 3031 in the circumferential direction of the end away from the oil pillow 2, and the heat dissipation device 4 is fixedly arranged at one side of the oil pillow 2.
[0025] It is worth mentioning that the oil pillow 2 is fixedly installed at one end of the top of the oil-immersed transformer body 1, is used for storing oil and supplementing oil for the oil-immersed transformer body 1, the pressure relief device 3 is fixedly installed at the middle position of the side surface of the oil pillow 2, is used for reducing the pressure of the oil-immersed transformer body 1 and the oil pillow 2, avoids the problem that the oil-immersed transformer body 1 and the oil pillow 2 are broken due to excessive pressure, one end of the extension section 301 is fixedly installed at the middle position of the side surface of the oil pillow 2 and is communicated with the oil pillow 2, is used for increasing the storage volume of the oil pillow 2, the flow-off pipe 302 is fixedly installed on the side surface of the extension section 301 away from the oil pillow 2 and is communicated with the extension section 301, is used for the installation of the liquid outlet pipe 303, one end of the liquid outlet pipe 303 provided with the oil discharge hole 3031 is slidably installed in the flow-off pipe 302, and the other end is fixedly installed in the oil pillow 2, one end of the liquid outlet pipe 303 located at the oil discharge hole 3031 is a sealed end, and the other end is an open end, the oil in the oil pillow 2 enters through the open end of the liquid outlet pipe 303, the heat dissipation device 4 and the pressure relief device 3 are located on the same side of the oil pillow 2, and are used for returning the oil discharged from the pressure relief device 3 to the inside of the oil pillow 2 after heat dissipation.
[0026] As preferred, as shown in Figure 4 In this embodiment, the telescopic section 301 is fixedly provided with a fixed ring 3011 at both ends in the circumferential direction of the outer ring of the telescopic section 301, and the outer ring of the telescopic section 301 is slidingly provided with a limiting slide rod 3012 on the fixed ring 3011, and a spring 3013 is arranged on the limiting slide rod 3012 between the two fixed rings 3011.
[0027] It should be noted that the fixed ring 3011 is a plurality of fixedly installed at both ends of the outer ring of the telescopic section 301, and the fixed rings 3011 at both ends of the outer ring of the telescopic section 301 correspond to each other in the transverse position for the installation of the limiting slide rod 3012, the limiting slide rod 3012 is fixedly installed with the fixed ring 3011 close to the oil pillow 2, and the limiting slide rod 3012 is slidingly installed with the fixed ring 3011 away from the oil pillow 2, for assisting the stability of the telescopic section 301 during telescoping and limiting the maximum limit of the telescopic section 301 extension, and the both ends of the spring 3013 are fixedly installed on the transversely corresponding fixed rings 3011 at both ends of the outer ring of the telescopic section 301, for assisting the reset of the telescopic section 301 after extension.
[0028] When the telescopic section 301 is extended to the maximum volume, the oil discharge hole 3031 of the liquid outlet pipe 303 is located between the two first sealing rings 3022 on the drain pipe 302.
[0029] As preferred, still as shown in Figure 3 In this embodiment, the drain pipe 302 is uniformly provided with a strip-shaped liquid outlet groove 3021 in the circumferential direction at the middle position, and the first sealing ring 3022 is arranged between the inner ring of the drain pipe 302 and the outer ring of the liquid outlet pipe 303 on both sides of the strip-shaped liquid outlet groove 3021.
[0030] Specifically, the outer ring of the first sealing ring 3022 is fixedly installed on the inner ring of the drain pipe 302, the inner ring of the first sealing ring 3022 is slidingly sleeved on the outer ring of the liquid outlet pipe 303, the drain pipe 302 and the first sealing ring 3022 form a sliding seal with the liquid outlet pipe 303, and the first sealing ring 3022 close to the telescopic section 301 seals the gap between the drain pipe 302 and the liquid outlet pipe 303 connected with the telescopic section 301, to avoid the oil in the telescopic section 301 flowing into the strip-shaped liquid outlet groove 3021 through the gap between the drain pipe 302 and the liquid outlet pipe 303.
[0031] The inner diameter of the drain pipe 302 is equal to the outer diameter of the liquid outlet pipe 303.
[0032] The strip-shaped liquid outlet groove 3021 corresponds to the oil discharge hole 3031 in the transverse direction.
[0033] As preferred, as shown in Figure 2As shown in the embodiment, the support frame 201 is fixedly arranged on one side of the oil pillow 2 close to the telescopic section 301, and the liquid outlet pipe 303 is fixedly arranged on the support frame 201 away from the oil discharge hole 3031.
[0034] As preferred, still as shown in the embodiment, Figure 1 and Figure 3 As shown in the embodiment, the heat dissipation device 4 includes the liquid inlet pipe 401 fixedly arranged on the side of the oil pillow 2, and the heat dissipation fins 402 fixedly arranged on the bottom of the liquid inlet pipe 401. The backflow pipe 403 is fixedly arranged between the bottom of the heat dissipation fins 402 and the oil pillow 2. The mounting frame 404 is fixedly arranged on the top of the liquid inlet pipe 401, and the other end of the mounting frame 404 is fixedly arranged on the top of the side of the oil pillow 2.
[0035] Specifically, one end of the top of the mounting frame 404 is fixedly arranged on the top of the side of the oil pillow 2, for supporting the installation of the liquid inlet pipe 401. The liquid inlet pipe 401 is fixedly arranged on the bottom of the mounting frame 404. The oil liquid discharged from the oil pillow 2 flows into the heat dissipation fins 402 through the liquid inlet pipe 401. The heat dissipation fins 402 are a plurality of heat dissipation fins, which are fixedly arranged on the liquid inlet pipe 401 at equal intervals, for dissipating the heat of the oil liquid flowing into the liquid inlet pipe 401. The backflow pipe 403 is fixedly arranged on the bottom of the heat dissipation fins 402. The other end of the backflow pipe 403 is connected to the bottom of the side of the oil pillow 2, so that the oil liquid cooled by the heat dissipation fins 402 flows back to the oil pillow 2 through the backflow pipe 403. A one-way valve is arranged in the backflow pipe 403, so that the oil liquid can only flow from the heat dissipation fins 402 to the inside of the oil pillow 2.
[0036] As preferred, still as shown in the embodiment, Figure 3 As shown in the embodiment, the second sealing ring 405 is arranged between the inner circle of the liquid inlet pipe 401 and the outer circle of the discharge pipe 302 close to one end of the telescopic section 301.
[0037] Specifically, the outer circle of the second sealing ring 405 is fixedly arranged on the inner circle of the liquid inlet pipe 401 close to one end of the telescopic section 301. The inner circle of the second sealing ring 405 is slidably sleeved on the outer circle of the discharge pipe 302. The liquid inlet pipe 401, the second sealing ring 405, and the discharge pipe 302 form a sliding seal.
[0038] The inner circle of the liquid inlet pipe 401 has a diameter greater than that of the outer circle of the discharge pipe 302. The oil liquid flows into the liquid inlet pipe 401 and the heat dissipation fins 402 through the strip-shaped liquid outlet groove 3021, so as to discharge and dissipate the heat of the transformer.
[0039] When the transformer is in normal operation, the pressure relief assembly does not participate in the pressure relief work of the oil-immersed transformer, at this time the oil discharging hole 3031 of the liquid outlet pipe 303 is located in the pressure relief pipe 302 away from one end of the telescopic section 301, and the oil discharging hole 3031 on the liquid outlet pipe 303 is located outside the two first sealing rings 3022 away from the telescopic section 301, so that the oil discharging hole 3031 is sealed; when the oil-immersed transformer is overloaded, when the oil pressure in the oil-immersed transformer body 1 and the oil pillow 2 exceeds the predetermined value, the telescopic section 301 starts to elongate to increase the volume of the oil pillow 2, and at the same time the pressure relief pipe 302 moves away from the oil pillow 2 along with the elongation of the telescopic section 301, at this time the static friction between the first sealing ring 3022 and the liquid outlet pipe 303 and the second sealing ring 405 and the pressure relief pipe 302 changes to dynamic friction, so that the oil discharging pipe and the liquid outlet pipe 303 and the liquid inlet pipe 401 are relatively displaced, and the strip-shaped liquid outlet groove 3021 between the two first sealing rings 3022 on the pressure relief pipe 302 gradually moves to be connected with the oil discharging hole 3031, so that the oil in the oil pillow 2 flows into the strip-shaped liquid outlet groove 3021 through the oil discharging hole 3031 on the liquid outlet pipe 303 and then flows to the heat dissipation fin 402.
[0040] The above only describes the preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A pressure-relief transformer oil pillow, characterized by, Include: Oil-immersed transformer body (1); Oil pillow (2), fixedly arranged at one end of the top of the oil-immersed transformer body (1); Pressure relief device (3), fixedly arranged on one side of the oil pillow (2), the pressure relief device (3) includes a telescopic section (301) fixedly arranged on one side of the oil pillow (2), and a flow pipe (302) fixedly arranged on the side surface of the telescopic section (301), the flow pipe (302) is slidably provided with a liquid outlet pipe (303) inside, and a plurality of oil discharge holes (3031) are uniformly arranged on the liquid outlet pipe (303) away from one end of the oil pillow (2) in the circumferential direction. Heat dissipation device (4), fixedly arranged on one side of the oil pillow (2).
2. The pressure relief type transformer oil pillow according to claim 1, wherein: the two ends of the telescopic section (301) are fixedly arranged with fixed rings (3011) at equal intervals in the circumferential direction of the outer circle of the telescopic section (301), the outer circle of the telescopic section (301) is slidably provided with a limiting slide rod (3012) on the fixed ring (3011), and the two fixed rings (3011) are provided with springs (3013) on the limiting slide rod (3012).
3. The pressure relief type transformer oil pillow according to claim 1, wherein: the flow pipe (302) is uniformly provided with a strip-shaped liquid outlet groove (3021) at the middle position in the circumferential direction, and the two sides of the strip-shaped liquid outlet groove (3021) are provided with first sealing rings (3022) between the inner circle of the flow pipe (302) and the outer circle of the liquid outlet pipe (303).
4. The pressure relief type transformer oil pillow according to claim 1, wherein: the oil pillow (2) is fixedly arranged with a support frame (201) near one side of the telescopic section (301) inside, and one end of the liquid outlet pipe (303) away from the oil discharge hole (3031) is fixedly arranged on the support frame (201).
5. The pressure relief type transformer oil pillow according to claim 1, wherein: the heat dissipation device (4) includes a liquid inlet pipe (401) fixedly arranged on the side surface of the oil pillow (2), and a heat dissipation fin (402) fixedly arranged at the bottom of the liquid inlet pipe (401), a return pipe (403) is fixedly arranged between the bottom of the heat dissipation fin (402) and the oil pillow (2), an installation frame (404) is fixedly arranged at the top of the oil pillow (2) on the other end of the liquid inlet pipe (401).
6. The pressure relief type transformer oil pillow according to claim 5, wherein: a second sealing ring (405) is arranged between the inner circle of the liquid inlet pipe (401) and the outer circle of the flow pipe (302) near one end of the telescopic section (301).