A transformer oil conservator capsule breakage detection device

Abstract

This utility model relates to the technical field of transformer testing equipment, specifically disclosing a transformer oil conservator bladder breakage detection device. It includes a flange pipe, a sealing assembly, a telescopic assembly, and a limiting assembly. The flange pipe is located at the top of the oil conservator and communicates with the bladder, with a flange cover sealing the top. The telescopic assembly is installed at the bottom of the flange cover, extending into the bladder and connecting to a detection sensor. The sensor wire passes through the telescopic assembly and the flange cover to the outside. The sealing assembly is located in the middle of the flange cover and connects to the wire. The limiting assembly is installed at the bottom of the sensor and connects to the bottom inner side of the bladder. This utility model solves the leakage problem of existing devices through a multi-seal structure, ensuring no leakage of the bladder during testing. The telescopic assembly allows the sensor to adapt to changes in oil level, and the limiting assembly avoids false detections. It can accurately and stably detect bladder breakage, and is convenient to install and maintain, making it suitable for transformer oil conservator bladder testing.

Description

Technical Field

[0001] This utility model relates to the technical field of transformer testing equipment, specifically to a transformer oil conservator capsule rupture detection device. Background Technology

[0002] In power systems, transformers are extremely critical equipment, and transformer insulating oil plays a vital role in the safe and stable operation of transformers, possessing functions such as insulation, heat dissipation, and arc suppression. The causes of transformer oil deterioration mainly fall into two categories: First, the transformer encounters an external short circuit or internal fault, with the short-circuit current or internal arc causing the insulating oil to deteriorate; these situations are often sudden faults. Second, during operation, defects in the transformer oil system are not detected in time, leading to the gradual deterioration of the insulating oil quality; this situation is often caused by poor operation and maintenance management. During transformer operation, the oil system is most prone to problems in two main areas: one is leakage in the negative pressure zone, causing air and moisture to enter the transformer oil; the other is damage to the bladder in the oil conservator, allowing a large amount of air to enter the oil conservator through the transformer breather and subsequently into the transformer tank.

[0003] Currently, there are relevant technical solutions for detecting transformer oil conservator bladder rupture. For example, some solutions use detection sensors installed inside the bladder for monitoring, but the installation and removal of these sensors are often cumbersome, causing inconvenience for equipment maintenance. Another solution uses a pull-type component to place the detection sensor inside the bladder; however, gaps can easily appear between the pull-type component and the inspection port, making it difficult to ensure the oil conservator's seal and leading to gas leakage inside the bladder. This not only affects the accuracy of the detection but may also adversely affect the normal operation of the transformer. In addition, in existing detection devices, the position of the detection sensor inside the bladder is not easily maintained stably, and it is prone to false detections due to direct contact with the inner wall of the bladder. Furthermore, it is difficult to adapt to changes in the oil level inside the bladder, affecting the continuity and reliability of the detection. Utility Model Content

[0004] The purpose of this invention is to provide a transformer oil conservator capsule damage detection device that achieves stable and accurate detection, and is easy to install and maintain.

[0005] This utility model is achieved through the following technical solution: a transformer oil conservator capsule rupture detection device, comprising a flange pipe, a sealing assembly, a telescopic assembly, and a limiting assembly;

[0006] The flange tube is located at the top of the oil tank and communicates with the capsule; the top of the flange tube is provided with a flange cover for sealing the top of the flange tube in use.

[0007] The telescopic assembly is installed at the bottom center of the flange cover, and its bottom end extends through the flange tube into the capsule; a detection sensor is connected to the bottom end of the telescopic assembly. The detection sensor is located inside the capsule and is used for damage detection. The wire of the detection sensor extends through the telescopic assembly and the flange cover to the outside of the oil tank.

[0008] The sealing assembly is located in the middle of the flange cover and is connected to the wires of the detection sensor;

[0009] The limiting component is installed at the bottom of the detection sensor and is located inside the capsule, connected to the bottom inner side of the capsule.

[0010] The working principle of this technical solution is as follows: the flange pipe serves as a channel connecting the oil conservator and the capsule, and its top is sealed by a flange cover to prevent the intrusion of external gas; the telescopic component sends the detection sensor into the capsule to achieve damage detection; the sealing component seals the wire passage of the detection sensor to prevent gas leakage; and the limiting component fixes the position of the detection sensor to ensure detection stability. The four components work together to form a complete closed loop of detection, sealing, and limiting, ensuring no gas leakage inside the capsule.

[0011] To better realize this utility model, the telescopic component further includes a sleeve, a sliding tube, a connecting plate, and a sealing gasket;

[0012] The sleeve is installed at the bottom of the flange cover and is located inside the flange tube;

[0013] The sliding tube is slidably installed on the inner side of the sleeve;

[0014] The connecting plate is installed at the bottom end of the sliding tube and is attached to the detection sensor;

[0015] The sealing gasket is an elastic sealing element, which is set on the inner side of the bottom end of the sleeve and sleeved on the outer side of the sliding tube to seal the gap between the sleeve and the sliding tube.

[0016] To better realize this utility model, the inner bottom end of the sleeve is provided with a baffle that is sleeved on the outside of the sliding tube, and the top end of the sliding tube and located inside the sleeve is provided with a limiting plate; the edge of the limiting plate is slidably connected to the inner wall of the sleeve, and the baffle and the limiting plate cooperate to limit the sliding stroke of the sliding tube and prevent the sliding tube from falling out of the sleeve.

[0017] To better realize this utility model, the limiting plate is further provided with multiple notches at its edge. The notches are used to balance the air pressure inside the sleeve and the top of the sliding tube, so that the sliding tube can slide smoothly inside the sleeve.

[0018] To better realize this utility model, the number of baffles is at least two. The two baffles are spaced apart along the axial direction of the sliding tube and form an annular gap between them. The sealing gasket is embedded in the annular gap and fits tightly against the outer wall of the sliding tube to fix the sealing gasket and enhance the sealing effect.

[0019] To better realize this utility model, a spring is further provided on the inner side of the sleeve and between the flange cover and the limiting plate. The spring is in a compressed state, and its elastic force is used to push the sliding tube to extend to the outside of the sleeve, so that the detection sensor adapts to the change of oil level in the capsule and maintains its relative position with the inner side of the capsule.

[0020] To better realize this utility model, the limiting component further includes a connecting rod, a connecting disc, and a connecting block;

[0021] The connecting block is installed at the bottom of the detection sensor;

[0022] The connecting rod is installed at the bottom end of the connecting block;

[0023] The connecting disc is a flexible disc that is installed at the bottom of the connecting rod and flexibly contacts the inner bottom of the capsule. It is used to support the detection sensor inside the capsule and maintain a preset gap with the inner wall of the capsule to avoid the detection sensor directly contacting the capsule and causing false detection.

[0024] To better realize this utility model, the sealing assembly further includes an installation tube and a sealing block;

[0025] The mounting pipe is installed in the middle of the flange cover;

[0026] The sealing block is made of elastic sealing material, installed inside the mounting tube and tightly wrapped around the outside of the detection sensor wire, while also fitting against the inner wall of the mounting tube to seal the gap between the wire and the mounting tube, preventing gas leakage from the capsule.

[0027] To better realize this utility model, a connecting pipe is further provided in the middle of the side of the flange tube. The connecting pipe is used to connect with the transformer breather to balance the air pressure inside and outside the capsule.

[0028] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0029] (1) This utility model can effectively seal the top channel by sealing the flange cover and flange pipe, eliminating the leakage hazards caused by the structural problems of traditional inspection ports. At the same time, a sealing gasket is set between the sleeve and the sliding pipe in the telescopic assembly, and the sealing block in the sealing assembly tightly wraps the wire of the detection sensor and fits against the inner wall of the installation pipe. The multiple sealing structure ensures that there will be no gas leakage during the operation of the entire device, ensuring the sealing of the transformer oil tank, maintaining the stable environment inside the transformer, and avoiding a series of safety problems and oil quality degradation caused by gas leakage.

[0030] (2) This utility model can monitor the internal state of the capsule in real time through the detection sensor. When the capsule is damaged, the signal can be transmitted to the outside through the wire in time so that the maintenance personnel can detect it in time and take corresponding measures. In addition, the limiting component supports the detection sensor stably in a suitable position inside the capsule, so that it maintains a preset gap with the inner wall of the capsule. This avoids false detection caused by the detection sensor directly contacting the inner wall of the capsule, and ensures the positional stability of the detection sensor inside the capsule, thereby ensuring the accuracy and reliability of the detection data and providing a strong guarantee for the safe and stable operation of the transformer.

[0031] (3) In this utility model, the spring installed inside the sleeve is in a compressed state, and its elastic force can push the sliding tube to extend to the outside of the sleeve, so that the detection sensor can adapt to the change of oil level inside the capsule. When the oil level rises or falls, the detection sensor can adjust its position accordingly under the action of the spring, and always maintain effective monitoring of the situation inside the capsule. There is no need for frequent manual intervention to adjust the position of the detection sensor, which improves the automation and intelligence level of detection and reduces the operation and maintenance cost.

[0032] (4) The connection between the components of this utility model is simple and clear, which makes it easy for installers to assemble and disassemble. The telescopic component adopts a structure of sliding cooperation between the sleeve and the sliding tube, which allows the detection sensor to flexibly enter and exit the capsule, making it easy to install and replace, simplifying the maintenance process, and reducing the operating difficulty and maintenance cost for the staff.

[0033] (5) In this utility model, the baffle at the bottom of the inner side of the sleeve and the limiting plate at the top of the sliding tube cooperate with each other to effectively limit the sliding stroke of the sliding tube, prevent the sliding tube from falling out of the sleeve, and ensure the stability of the telescopic component structure; at least two baffles spaced apart along the axial direction of the sliding tube form an annular gap, and the sealing gasket is embedded in the gap and tightly fits against the outer wall of the sliding tube, which not only fixes the sealing gasket, but also enhances the sealing effect, thereby extending the overall service life of the device.

[0034] (6) The connecting pipe in the middle of the side of the flange pipe in this utility model is connected to the transformer breather, which can effectively balance the air pressure inside and outside the capsule, avoid damage to the capsule due to air pressure imbalance, extend the service life of the capsule, and indirectly ensure the safe operation of the transformer. Attached Figure Description

[0035] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0036] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0037] Figure 2 This is a cross-sectional perspective view of the three-dimensional structure of this utility model.

[0038] Figure 3 This is a three-dimensional structural diagram of the telescopic component in this utility model.

[0039] Figure 4 This is a cross-sectional view of the telescopic component in this utility model.

[0040] Wherein: 1—oil conservator, 2—flange pipe, 3—flange cover, 4—detection sensor, 5—connecting pipe, 6—capsule, 7—sleeve, 8—sliding pipe, 9—connecting plate, 10—connecting rod, 11—connecting disc, 12—connecting block, 13—spring, 14—limiting plate, 15—notch, 16—baffle, 17—sealing gasket, 18—installation pipe, 19—sealing block. Detailed Implementation

[0041] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0042] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0043] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0044] Example 1:

[0045] The main structure of this embodiment is as follows: Figure 1 , Figure 2 As shown, it includes flange pipe 2, sealing assembly, expansion assembly and limiting assembly;

[0046] The flange pipe 2 is located at the top of the oil conservator 1 and communicates with the capsule 6; the top of the flange pipe 2 is provided with a flange cover 3 for closing the top of the flange pipe 2 in use.

[0047] The telescopic assembly is installed at the bottom center of the flange cover 3, and its bottom end extends through the flange tube 2 into the capsule 6; the bottom end of the telescopic assembly is connected to a detection sensor 4, which is located inside the capsule 6 and is used for damage detection. The wire of the detection sensor 4 extends through the telescopic assembly and the flange cover 3 to the outside of the oil conservator 1.

[0048] The sealing assembly is located in the middle of the flange cover 3 and is connected to the wire of the detection sensor 4;

[0049] The limiting component is installed at the bottom of the detection sensor 4 and is located inside the capsule 6 and connected to the bottom of the inner side of the capsule 6.

[0050] The specific implementation process is as follows: An interface connecting the oil conservator 1 to the capsule 6 is opened at the top; the flange pipe 2 is fixed at this interface to ensure communication between the flange pipe 2 and the inside of the capsule 6; the telescopic assembly is installed at the bottom center of the flange cover 3, allowing the bottom end of the telescopic assembly to extend through the flange pipe 2 into the capsule 6; a detection sensor 4 is connected to the bottom end of the telescopic assembly, ensuring the sensor 4 is completely located inside the capsule 6; the wire of the detection sensor 4 is sequentially passed through the telescopic assembly and the flange cover 3, extending to the outside of the oil conservator 1 and connecting to the monitoring system; a sealing assembly is installed in the middle of the flange cover 3, ensuring a tight connection between the sealing assembly and the wire of the detection sensor 4, achieving a seal at the wire penetration point; a limiting assembly is installed at the bottom end of the detection sensor 4, connecting the bottom of the limiting assembly to the inner bottom end of the capsule 6, completing the overall assembly; the flange cover 3 is then closed, and bolts are used to fix the flange cover 3 to the flange pipe 2, ensuring the top of the flange pipe 2 is sealed.

[0051] Example 2:

[0052] This embodiment further defines the structure of the telescopic component based on the above embodiments, such as... Figures 2-4 As shown, the telescopic assembly includes a sleeve 7, a sliding tube 8, a connecting plate 9, and a sealing gasket 17;

[0053] The sleeve 7 is installed at the bottom of the flange cover 3 and is located inside the flange tube 2;

[0054] The sliding tube 8 is slidably installed on the inner side of the sleeve 7;

[0055] The connecting plate 9 is installed at the bottom end of the sliding tube 8 and is attached to the detection sensor 4;

[0056] The sealing gasket 17 is an elastic sealing element, which is set on the inner side of the bottom end of the sleeve 7 and sleeved on the outer side of the sliding tube 8 to seal the gap between the sleeve 7 and the sliding tube 8. The sleeve 7 is fixed to the flange cover 3 as a sliding reference; the sliding tube 8 slides in the sleeve 7, which drives the detection sensor 4 to flexibly adjust its position; the connecting plate 9 realizes the sealed connection between the sliding tube 8 and the detection sensor 4; the elastic sealing gasket 17 fits against the outer wall of the sliding tube 8 and always seals the gap between the sleeve 7 and the sliding tube 8 during the sliding process to prevent gas leakage.

[0057] The specific implementation process is as follows: The sleeve 7 is vertically fixed to the bottom end of the flange cover 3, and the sleeve 7 is located inside the flange pipe 2. The length of the sleeve 7 must allow its bottom end to pass through the flange pipe 2. The sliding pipe 8 is slidably fitted inside the sleeve 7, ensuring that the sliding pipe 8 can slide smoothly along the axial direction of the sleeve 7. A connecting plate 9 is installed at the bottom end of the sliding pipe 8, and the detection sensor 4 is bonded to the connecting plate 9 with sealant, ensuring no gaps at the connection. A sealing gasket 17 is installed inside the bottom end of the sleeve 7, so that the sealing gasket 17 is fitted outside the sliding pipe 8, and the inner wall of the sealing gasket 17 is tightly fitted to the outer wall of the sliding pipe 8. The flange cover 3 is installed and the wires are arranged according to the steps of Embodiment 1. At this time, the sliding pipe 8 can drive the detection sensor 4 to slide inside the sleeve 7, and the sealing gasket 17 always remains sealed. The other parts of this embodiment are the same as those in the above embodiment and will not be described again.

[0058] Example 3:

[0059] This embodiment further defines the structure of the telescopic component based on the above embodiments, such as... Figures 2-4As shown, a baffle 16 is provided at the bottom inner end of the sleeve 7, which is sleeved on the outside of the sliding tube 8. A limiting plate 14 is provided at the top of the sliding tube 8 and inside the sleeve 7. The edge of the limiting plate 14 is slidably connected to the inner wall of the sleeve 7. The baffle 16 and the limiting plate 14 cooperate to limit the sliding stroke of the sliding tube 8 and prevent the sliding tube 8 from falling out of the sleeve 7. The stroke limit of the sliding tube 8 is achieved by the cooperation of the baffle 16 and the limiting plate 14. The baffle 16 is fixed at the bottom inner end of the sleeve 7 as a downward limit; the limiting plate 14 is fixed at the top of the sliding tube 8 and moves with the sliding tube 8. When the sliding tube 8 slides down to its maximum stroke, the limiting plate 14 contacts the baffle 16, preventing the sliding tube 8 from continuing to slide down and avoiding the sliding tube 8 from falling out of the sleeve 7; at the same time, the limiting plate 14 is slidably connected to the inner wall of the sleeve 7 to ensure sliding stability.

[0060] The specific implementation process is as follows: A baffle 16 is fixedly fitted around the outer side of the sliding tube 8 along the circumferential direction at the bottom inner side of the sleeve 7. The inner diameter of the baffle 16 is slightly larger than the outer diameter of the sliding tube 8 to ensure smooth passage of the sliding tube 8. A limiting plate 14 is fixed at the top of the sliding tube 8 inside the sleeve 7. The outer diameter of the limiting plate 14 is slightly smaller than the inner diameter of the sleeve 7, allowing the edge of the limiting plate 14 to slide in contact with the inner wall of the sleeve 7. After assembly, as the sliding tube 8 slides down, the limiting plate 14 moves down accordingly. When the limiting plate 14 contacts the baffle 16, the sliding tube 8 stops sliding down, thus limiting the stroke. The other parts of this embodiment are the same as those in the above embodiment and will not be described again.

[0061] Example 4:

[0062] This embodiment further defines the structure of the telescopic component based on the above embodiments, such as... Figures 2-4 As shown, the limiting plate 14 has multiple notches 15 at its edge. These notches 15 are used to balance the air pressure between the inside of the sleeve 7 and the top of the sliding tube 8, allowing the sliding tube 8 to slide smoothly within the sleeve 7. The notches 15 on the edge of the limiting plate 14 balance the air pressure. When the sliding tube 8 slides, a pressure difference arises between the space inside the sleeve 7 and the top of the sliding tube 8 due to volume changes. The notches 15 allow gas to flow through, eliminating the pressure difference and preventing air pressure from hindering the movement of the sliding tube 8, thus ensuring smooth sliding.

[0063] The specific implementation process is as follows: multiple notches 15 are evenly opened on the edge of the limiting plate 14. The shape of the notches 15 can be rectangular or arc-shaped, and the depth is 1 / 2 to 2 / 3 of the thickness of the limiting plate 14. The limiting plate 14 is installed according to the steps of embodiment 3. At this time, the gas inside the sleeve 7 and the top of the sliding tube 8 can flow through the notches 15, and there is no air pressure resistance when the sliding tube 8 slides. The other parts of this embodiment are the same as those in the above embodiment, and will not be described again.

[0064] Example 5:

[0065] This embodiment further defines the structure of the telescopic component based on the above embodiments, such as... Figures 2-4 As shown, there are at least two baffles 16. The two baffles 16 are spaced apart along the axial direction of the sliding tube 8, forming an annular gap. The sealing gasket 17 is embedded in this annular gap and tightly fitted against the outer wall of the sliding tube 8 to fix the sealing gasket 17 and enhance the sealing effect. The spaced design of multiple baffles 16 enhances the stability of the sealing gasket 17. At least two baffles 16 spaced apart along the axial direction of the sliding tube 8 form an annular gap. The sealing gasket 17 is embedded in this gap and limited by the baffles 16 to prevent the sealing gasket 17 from shifting during sliding. At the same time, the sealing gasket 17 is tightly fitted against the outer wall of the sliding tube 8, providing double protection for the sealing effect.

[0066] The specific implementation process is as follows: at least two baffles 16 are fixed at intervals along the axial direction of the sliding tube 8 at the bottom inner side of the sleeve 7, forming an annular gap between the two baffles 16, the width of which matches the thickness of the sealing gasket 17; the sealing gasket 17 is then fitted into the annular gap, ensuring that the inner wall of the sealing gasket 17 is tightly fitted to the outer wall of the sliding tube 8, and that the outer wall contacts the baffles 16, thus completing the fixing of the sealing gasket 17. Other parts of this embodiment are the same as those in the above embodiment and will not be repeated here.

[0067] Example 6:

[0068] This embodiment further defines the structure of the telescopic component based on the above embodiments, such as... Figures 2-4 As shown, a spring 13 is installed inside the sleeve 7, located between the flange cover 3 and the limiting plate 14. The spring 13 is in a compressed state, and its elastic force pushes the sliding tube 8 to extend outward from the sleeve 7, allowing the detection sensor 4 to adapt to changes in the oil level inside the capsule 6 and maintain its relative position with the inside of the capsule 6. The compressed spring 13 provides continuous elastic force, pushing the sliding tube 8 to extend outward from the sleeve 7. When the oil level inside the capsule 6 rises, the oil level pushes the detection sensor 4 upward, further compressing the spring 13; when the oil level falls, the spring 13 releases its elastic force, pushing the sliding tube 8 downward, ensuring that the detection sensor 4 always maintains a relatively stable position with the oil level, achieving adaptive adjustment.

[0069] The specific implementation process is as follows: A spring 13 is installed inside the sleeve 7, between the flange cover 3 and the limiting plate 14, so that the spring 13 is sleeved on the outside of the sliding tube 8. During assembly, the spring 13 is compressed to ensure that it is in a compressed state, with its top end contacting the flange cover 3 and its bottom end contacting the limiting plate 14. The elastic force of the spring 13 pushes the limiting plate 14 downward, causing the sliding tube 8 to extend outward from the sleeve 7, allowing the detection sensor 4 to adapt to changes in the oil level inside the capsule 6. Other parts of this embodiment are the same as those in the above embodiment and will not be repeated.

[0070] Example 7:

[0071] This embodiment further defines the structure of the limiting component based on the above embodiments, such as... Figure 4 As shown, the limiting assembly includes a connecting rod 10, a connecting plate 11, and a connecting block 12;

[0072] The connecting block 12 is installed at the bottom of the detection sensor 4;

[0073] The connecting rod 10 is installed at the bottom end of the connecting block 12;

[0074] The connecting disc 11 is a flexible disc body, installed at the bottom end of the connecting rod 10 and flexibly contacting the inner bottom end of the capsule 6. It supports the detection sensor 4 inside the capsule 6 and maintains a preset gap with the inner wall of the capsule 6, preventing the detection sensor 4 from directly contacting the capsule 6 and causing false detections. The connecting block 12 connects the detection sensor 4 to the connecting rod 10; the connecting rod 10 extends the support distance; the flexible disc connecting disc 11 flexibly contacts the inner bottom end of the capsule 6, avoiding damage to the capsule 6, and the length of the connecting rod 10 limits the distance between the detection sensor 4 and the inner wall of the capsule 6, preventing false detections caused by direct contact.

[0075] The specific implementation process is as follows: A connecting block 12 is fixed to the bottom of the detection sensor 4 to ensure a secure connection; the top end of the connecting rod 10 is fixed to the connecting block 12, and the length of the connecting rod 10 is determined according to a preset gap, typically 5-10 cm; a flexible disc connecting plate 11, such as one made of rubber, is installed at the bottom of the connecting rod 10, so that the bottom surface of the connecting plate 11 contacts the inner bottom of the capsule 6. At this time, the detection sensor 4 maintains a preset gap with the inner wall of the capsule 6. Other parts of this embodiment are the same as those in the above embodiment and will not be repeated.

[0076] Example 8:

[0077] This embodiment further defines the structure of the sealing assembly based on the above embodiments, such as... Figure 4 As shown, the sealing assembly includes an installation tube 18 and a sealing block 19;

[0078] The mounting pipe 18 is installed in the middle of the flange cover 3;

[0079] The sealing block 19 is made of elastic sealing material and is installed inside the mounting tube 18, tightly wrapping around the outside of the wire of the detection sensor 4. It also fits against the inner wall of the mounting tube 18 to seal the gap between the wire and the mounting tube 18, preventing gas leakage from the capsule 6. The mounting tube 18 serves as the sealing reference and is fixed to the flange cover 3. The sealing block 19, made of elastic sealing material, tightly wraps around the wire and fits against the inner wall of the mounting tube 18. The material's elasticity fills all gaps, achieving a triple seal of the wire, sealing block, and mounting tube, completely preventing gas leakage from the capsule 6 along the wire.

[0080] The specific implementation process is as follows: a through hole is opened in the middle of the flange cover 3, and the mounting tube 18 is vertically fixed at the through hole, so that the mounting tube 18 is sealed to the flange cover 3; the wire of the detection sensor 4 is passed through the mounting tube 18, and an elastic sealing material such as silicone is filled inside the mounting tube 18 to form a sealing block 19, so that the sealing block 19 tightly wraps the wire, and the outer wall of the sealing block 19 is completely in contact with the inner wall of the mounting tube 18, thus completing the sealing at the wire passage. The other parts of this embodiment are the same as those in the above embodiment, and will not be described again.

[0081] Example 9:

[0082] This embodiment, based on the above embodiment, further adds a connecting pipe 5, such as... Figures 1-3 As shown, a connecting pipe 5 is provided in the middle of the side of the flange pipe 2. The connecting pipe 5 is used to connect with the transformer breather to balance the air pressure inside and outside the capsule 6. When the transformer is running, the capsule 6 expands or contracts with the oil level. The connecting pipe 5 connects the capsule 6 to the breather, so that the air pressure inside the capsule 6 is balanced with the outside air through the breather, avoiding damage to the capsule 6 due to excessively high or low air pressure and extending its service life.

[0083] The specific implementation process is as follows: an interface is opened in the middle of the side of the flange pipe 2, and the connecting pipe 5 is fixed at the interface; the other end of the connecting pipe 5 is connected to the transformer breather, ensuring that the internal passage of the connecting pipe 5 is unobstructed. At this time, the gas in the capsule 6 can communicate with the breather through the flange pipe 2 and the connecting pipe 5 to achieve air pressure balance. The other parts of this embodiment are the same as those in the above embodiment, and will not be described again.

[0084] It is understood that the working principle and process of the transformer oil conservator capsule damage detection device structure according to one embodiment of the present utility model, such as the connecting plate 11 and the spring 13, are existing technologies and are well known to those skilled in the art, and will not be described in detail here.

[0085] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A transformer oil pillow capsule breakage detection device, characterized by, Includes flange pipe (2), sealing assembly, expansion assembly and limiting assembly; The flange tube (2) is located at the top of the oil tank (1) and communicates with the capsule (6); the top of the flange tube (2) is provided with a flange cover (3) for closing the top of the flange tube (2) in use. The telescopic assembly is installed at the bottom center of the flange cover (3), and its bottom end extends through the flange tube (2) into the capsule (6); the bottom end of the telescopic assembly is connected to a detection sensor (4), which is located inside the capsule (6) and is used for damage detection. The wire of the detection sensor (4) extends through the telescopic assembly and the flange cover (3) to the outside of the oil tank (1). The sealing assembly is located in the middle of the flange cover (3) and connected to the wire of the detection sensor (4); The limiting component is installed at the bottom of the detection sensor (4) and is located inside the capsule (6) and connected to the bottom of the inner side of the capsule (6).

2. The transformer oil pillow capsule breakage detection device of claim 1, wherein, The telescopic assembly includes a sleeve (7), a sliding tube (8), a connecting plate (9), and a sealing gasket (17). The sleeve (7) is installed at the bottom end of the flange cover (3) and located inside the flange tube (2); The sliding tube (8) is slidably installed on the inner side of the sleeve (7); The connecting plate (9) is installed at the bottom end of the sliding tube (8) and is attached to the detection sensor (4); The sealing gasket (17) is an elastic sealing element, which is set on the inner side of the bottom end of the sleeve (7) and sleeved on the outer side of the sliding tube (8) to seal the gap between the sleeve (7) and the sliding tube (8).

3. The transformer oil pillow capsule breakage detection device of claim 2, wherein, The inner bottom end of the sleeve (7) is provided with a baffle (16) sleeved on the outside of the sliding tube (8). The top end of the sliding tube (8) and the inner side of the sleeve (7) are provided with a limiting plate (14). The edge of the limiting plate (14) is slidably connected to the inner wall of the sleeve (7). The baffle (16) and the limiting plate (14) cooperate to limit the sliding stroke of the sliding tube (8) and prevent the sliding tube (8) from falling out of the sleeve (7).

4. The transformer oil pillow capsule breakage detection device of claim 3, wherein, The limiting plate (14) has multiple notches (15) at its edge. The notches (15) are used to balance the air pressure inside the sleeve (7) and the top of the sliding tube (8), so that the sliding tube (8) can slide smoothly inside the sleeve (7).

5. The transformer oil pillow capsule breakage detection device of claim 3, wherein, The number of baffles (16) is at least two. The two baffles (16) are spaced apart along the axial direction of the sliding tube (8) and form an annular gap between them. The sealing gasket (17) is embedded in the annular gap and fits tightly against the outer wall of the sliding tube (8) to fix the sealing gasket (17) and enhance the sealing effect.

6. The transformer oil pillow capsule breakage detection device of claim 3, wherein A spring (13) is provided inside the sleeve (7) and between the flange cover (3) and the limiting plate (14). The spring (13) is in a compressed state, and its elastic force is used to push the sliding tube (8) to extend to the outside of the sleeve (7), so that the detection sensor (4) adapts to the change of oil level inside the capsule (6) and maintains its relative position to the inside of the capsule (6).

7. The transformer oil conservator bladder breakage detection device according to claim 1, characterized in that, The limiting assembly includes a connecting rod (10), a connecting plate (11), and a connecting block (12). The connecting block (12) is installed at the bottom of the detection sensor (4); The connecting rod (10) is installed at the bottom end of the connecting block (12); The connecting disc (11) is a flexible disc body, which is installed at the bottom of the connecting rod (10) and flexibly contacts the inner bottom of the capsule (6). It is used to support the detection sensor (4) inside the capsule (6) and maintain a preset gap with the inner wall of the capsule (6) to avoid the detection sensor (4) directly contacting the capsule (6) and causing false detection.

8. The transformer oil conservator bladder breakage detection device according to claim 1, characterized in that, The sealing assembly includes an installation tube (18) and a sealing block (19); The mounting pipe (18) is installed in the middle of the flange cover (3); The sealing block (19) is made of elastic sealing material, installed inside the mounting tube (18) and tightly wrapped around the outside of the wire of the detection sensor (4), while adhering to the inner wall of the mounting tube (18) to seal the gap between the wire and the mounting tube (18) and prevent gas leakage from the capsule (6).

9. The transformer oil conservator bladder breakage detection device according to claim 1, characterized in that, A connecting pipe (5) is provided in the middle of the side of the flange pipe (2). The connecting pipe (5) is used to connect with the transformer breather to balance the air pressure inside and outside the capsule (6).

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