A transformer oil pillow capsule seal detection device

Abstract

The utility model relates to transformer detection equipment technical field, concretely refers to a kind of transformer oil pillow capsule tightness detection device, including detection box, second trachea, dismounting mechanism and sealing mechanism. Multiple detection cavities are equipped in detection box, each detection cavity top is equipped with first trachea and first air pressure detection sensor, second trachea is installed in the top of detection box and bottom end extends into detection cavity, and its side wall is equipped with second air pressure detection sensor. Dismounting mechanism realizes the quick connection of capsule and second trachea, sealing mechanism is composed of third air inlet pipe, connecting seat and air bag, and the tightness of connection can be enhanced. The utility model can detect multiple capsules simultaneously, judge tightness by monitoring air pressure change through double air pressure sensor, have the characteristics of quick dismounting, reliable sealing, accurate detection, effectively improve detection efficiency and accuracy, suitable for batch detection scene of transformer oil pillow capsule.

Description

Technical Field

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

[0002] As a critical oil storage component of a transformer, the sealing performance of its internal bladder directly affects the transformer's operational safety. The bladder-type oil conservator isolates the oil from air, preventing oxidation, moisture absorption, or impurities. If the bladder has sealing defects, it can lead to oil deterioration, decreased insulation performance, and even transformer failure. Therefore, testing the bladder's sealing performance is a core step in the production and maintenance of oil conservators. Existing transformer oil conservator bladder sealing testing devices have low efficiency; most devices can only test one bladder at a time, failing to meet the high-efficiency testing requirements of mass production or large-scale maintenance, resulting in long testing cycles and high costs. Furthermore, the connection between the bladder and the testing device often relies on traditional methods such as bolt tightening, which is time-consuming and labor-intensive, and repeated disassembly and assembly can cause wear on connecting parts, affecting testing stability. Moreover, air leakage at the connection between the bladder and the testing device is prone to occur due to poor sealing, interfering with the accuracy of the test results and leading to misjudgments. Some devices lack simultaneous monitoring of the internal air pressure of the bladder and the ambient air pressure, making it difficult to accurately determine the location and extent of leaks. Utility Model Content

[0003] The purpose of this invention is to provide a transformer oil conservator capsule sealing test device that can simultaneously test multiple capsules, quickly disassemble and assemble them, ensure reliable sealing, and provide accurate testing.

[0004] This utility model is achieved through the following technical solution: a transformer oil conservator bladder sealing test device, comprising:

[0005] The testing chamber has multiple testing chambers inside. A first air tube and a first air pressure detection sensor are installed at the top of each testing chamber. The detection head of the first air pressure detection sensor extends into the testing chamber.

[0006] The second air tube is installed at the top of the detection box. The bottom end of the second air tube extends into the detection chamber. A second air pressure detection sensor is installed at the upper end of the side wall of the second air tube. The detection head of the second air pressure detection sensor extends into the second air tube.

[0007] The disassembly and assembly mechanism is located on the outer wall of the second trachea, and the capsule is quickly connected to the second trachea through the disassembly and assembly mechanism;

[0008] The second trachea is provided with a sealing mechanism for sealing the connection between the second trachea and the capsule. The sealing mechanism consists of a third air inlet pipe installed on the upper end of the side wall of the second trachea, a connecting seat sleeved on the lower end of the side wall of the second trachea, and an air bladder installed on the outside of the connecting seat. The output end of the third air inlet pipe extends into the interior of the second trachea and passes through the side wall of the connecting seat to communicate with the air bladder.

[0009] The working principle of this technical solution is as follows: after filling the capsule with gas and evacuating the detection chamber, if there is a leak in the capsule, the air pressure inside the capsule will drop and the air pressure inside the detection chamber will rise. By monitoring the changes in the two sets of air pressures by the first air pressure detection sensor and the second air pressure detection sensor respectively, the sealing performance can be determined.

[0010] To better realize this utility model, the top of the detection box and the detection cavity are provided with an installation port, and an installation plate is installed on the outer wall of the second air pipe. The installation plate is connected to the detection box by bolts.

[0011] To better realize this utility model, the disassembly and assembly mechanism further includes:

[0012] The abutment seat is installed on the outer wall of the second trachea; two sets of slides are symmetrically opened on the abutment seat, and crossbars are installed inside the slides;

[0013] A drive assembly, which is adjustablely mounted on the abutment;

[0014] The clamping arm is slidably connected to the side wall of the slide rail. The clamping arm is slidably sleeved outside the crossbar. A second elastic element is provided between one side wall of the clamping arm and one end of the slide rail. The clamping arm is slidably adjusted along the slide rail by the drive of the drive assembly. The clamping arm is L-shaped.

[0015] To better realize this utility model, a connecting pipe is further installed on the capsule, a flange is provided at the top of the connecting pipe, the flange abuts against the bottom of the abutment seat, and the clamping arm abuts against the connecting pipe.

[0016] To better realize this utility model, the driving component further includes:

[0017] A drive rod slides through the abutment seat; a fixed seat is fixedly installed on the drive rod, and a first elastic element is provided between the fixed seat and the top of the abutment seat; one end of the drive rod extends to the bottom of the abutment seat, and this end abuts against the clamping arm.

[0018] To better realize this utility model, a storage seat is further provided at the top of the abutment seat, and an abutment block is provided at one end of the drive rod located below the abutment seat, and the abutment block is slidably connected to the inner wall of the storage seat.

[0019] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0020] (1) The detection box of this utility model is equipped with multiple detection chambers. Each detection chamber can independently complete the sealing test of a group of capsules, realize the synchronous detection of multiple groups of capsules, greatly shorten the batch detection time, and is suitable for industrial production and large-scale maintenance scenarios, significantly improving detection efficiency.

[0021] (2) This utility model achieves rapid connection and separation of capsule and second air tube through disassembly and assembly mechanism: by using the cooperation of drive rod and elastic element, only push the connecting tube flange of capsule to drive clamping arm to automatically clamp, and pull clamping arm to separate during disassembly, without cumbersome bolt operation, reducing disassembly and assembly time, reducing labor costs, and avoiding wear of parts due to repeated disassembly and assembly.

[0022] (3) The sealing mechanism of this utility model adopts an airbag design. The airbag on the outside of the connecting seat is inflated through the third air inlet pipe. After the airbag expands, it tightly abuts against the inner wall of the capsule connecting tube to form an annular seal, which effectively avoids the problem of air leakage at the connection during the test. Combined with the abutting seal between the abutting seat and the flange, the sealing of the connection part is doubly guaranteed, ensuring that the test results are not affected by external interference and improving the test accuracy.

[0023] (4) This utility model can simultaneously acquire two sets of air pressure data by coordinating the work of the first air pressure detection sensor to monitor the air pressure in the detection chamber and the second air pressure detection sensor to monitor the air pressure inside the capsule. If there is a leak in the capsule, the air pressure inside the capsule will drop while the air pressure in the detection chamber will rise. By comparing the two sets of data, the sealing status can be directly determined, the leakage problem can be accurately located, and misjudgment can be avoided.

[0024] (5) The components of this utility model adopt a modular design, which makes it easy to disassemble and repair them individually; the replacement of vulnerable components such as crossbars and elastic parts is simple, reducing equipment maintenance costs and extending service life. It effectively solves the problems of low efficiency, cumbersome operation and poor sealing of existing detection devices, and has significant practical value. It is suitable for widespread application. Attached Figure Description

[0025] 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:

[0026] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0027] Figure 2 This is a schematic diagram of the connection between the capsule and the second air inlet pipe of this utility model;

[0028] Figure 3This is an enlarged structural schematic diagram of the disassembly and assembly mechanism of this utility model;

[0029] Figure 4 This is a magnified schematic diagram of a portion of the structure at point A in this utility model.

[0030] Wherein: 1—Detection box, 101—Installation port, 2—First air pipe, 201—First air pressure detection sensor, 3—Second air pipe, 301—Connecting seat, 302—Airbag, 303—Third air inlet pipe, 304—Installation plate, 4—Capsule, 401—Connecting pipe, 5—Abutment seat, 501—Drive rod, 502—First elastic element, 503—Horizontal bar, 504—Second elastic element, 505—Clamping arm, 6—Second air pressure detection sensor. Detailed Implementation

[0031] 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.

[0032] 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," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, 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, and therefore should not be construed as a limitation on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly including one or more of the feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0033] 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.

[0034] Example 1:

[0035] The main structure of this embodiment is as follows: Figures 1-4 As shown, it includes:

[0036] The detection box 1 has multiple detection chambers inside. A first air tube 2 and a first air pressure detection sensor 201 are installed at the top of the detection chamber. The detection head of the first air pressure detection sensor 201 extends into the detection chamber.

[0037] The second air tube 3 is installed at the top of the detection box 1. The bottom end of the second air tube 3 extends into the detection chamber. The upper end of the side wall of the second air tube 3 is provided with a second air pressure detection sensor 6. The detection head of the second air pressure detection sensor 6 extends into the second air tube 3.

[0038] The disassembly and assembly mechanism is located on the outer wall of the second trachea 3, and the capsule 4 is quickly connected to the second trachea 3 through the disassembly and assembly mechanism.

[0039] The sealing mechanism is provided on the second air tube 3 for sealing the connection between the second air tube 3 and the capsule 4. The sealing mechanism consists of a third air inlet pipe 303 installed on the upper end of the side wall of the second air tube 3, a connecting seat 301 sleeved on the lower end of the side wall of the second air tube 3, and an airbag 302 installed on the outside of the connecting seat 301. The output end of the third air inlet pipe 303 extends into the interior of the second air tube 3 and passes through the side wall of the connecting seat 301 and communicates with the airbag 302.

[0040] The specific implementation process is as follows: Multiple detection chambers inside the detection box 1 are independently separated. A first air tube 2 and a first air pressure sensor 201 are installed at the top of each detection chamber, ensuring that the detection head of the first air pressure sensor 201 extends into the detection chamber. A second air tube 3 is installed at the top of the detection box 1, with its bottom end extending into the detection chamber, and the detection head of the second air pressure sensor 6 extends into the second air tube 3 to monitor the air pressure inside the capsule 4. The capsule 4 is connected to the second air tube 3 via a disassembly and assembly mechanism, and the connection is reinforced with a sealing mechanism. The sealing door of the detection chamber is closed. An external vacuum pump is connected through the first air tube 2 to evacuate the detection chamber to a vacuum state, and then the valve of the first air tube 2 is closed. An external air pump is connected through the second air tube 3 to fill the capsule 4 with nitrogen to a preset pressure, and then the valve of the second air tube 3 is closed. After a preset set time, such as 30 minutes, the air pressure in the detection chamber is read by the first air pressure detection sensor 201, and the air pressure inside capsule 4 is read by the second air pressure detection sensor 6. If the air pressure inside capsule 4 decreases and the air pressure in the detection chamber increases, it indicates that capsule 4 has a leak and the sealing performance is not up to standard. If both sets of air pressure are stable, it indicates that capsule 4 has a satisfactory sealing performance.

[0041] Example 2:

[0042] This embodiment further defines the structure of the detection box 1 based on the above embodiments, such as... Figures 1-4 As shown, the top of the detection box 1 and located on the detection chamber have an installation port 101. The outer wall of the second air pipe 3 is fitted with an installation plate 304, which is connected to the detection box 1 by bolts. Through the structure of the installation port 101, the installation plate 304, and the bolt connection, the second air pipe 3 and the detection box 1 can be detachably connected, which not only ensures the stability of the connection but also facilitates the later maintenance and replacement of the second air pipe 3, the disassembly and assembly mechanism, or the sealing mechanism.

[0043] The specific implementation process is as follows: Align the bottom end of the second air tube 3 with the mounting port 101 corresponding to the detection cavity at the top of the detection box 1, so that the mounting plate 304 on the outer wall of the second air tube 3 fits snugly against the top of the detection box 1; tighten the bolts through the pre-set screw holes in the mounting plate 304 and the detection box 1 to secure the tube, ensuring that the bottom end of the second air tube 3 stably extends into the detection cavity. When it is necessary to inspect or repair the second air tube 3 or its associated disassembly and sealing mechanisms, loosen the bolts, separate the mounting plate 304 from the detection box 1, and the second air tube 3 can be removed entirely from the mounting port 101. The operation is convenient. Other parts of this embodiment are the same as those in the above embodiment and will not be described again.

[0044] Example 3:

[0045] This embodiment, based on the above embodiments, further defines the structure of the disassembly and assembly mechanism, such as... Figures 2-4 As shown, the disassembly and assembly mechanism includes:

[0046] The abutment seat 5 is installed on the outer wall of the second air pipe 3; two sets of slides are symmetrically opened on the abutment seat 5, and crossbars 503 are installed inside the slides;

[0047] A drive assembly, which is adjustablely mounted on the abutment 5;

[0048] The system includes a clamping arm 505, which is slidably connected to the side wall of the slide rail. The clamping arm 505 is slidably sleeved outside the crossbar 503. A second elastic element 504 is provided between one side wall of the clamping arm 505 and one end of the slide rail. The clamping arm 505 is adjusted along the slide rail by being driven by the drive assembly. The clamping arm 505 is L-shaped. The sliding of the drive assembly drives the clamping arm 505 to move along the slide rail, and the elastic force of the second elastic element 504 achieves automatic clamping, eliminating the cumbersome operation of traditional bolt tightening.

[0049] The specific implementation process is as follows: Under the tension of the second elastic element 504, the clamping arm 505 moves away from the second air tube 3 along the slide, reserving installation space for the capsule 4; the drive component is not under force and is in its initial position. The connecting end of the capsule 4 is aligned with the bottom end of the second air tube 3, and the capsule 4 is pushed upwards, triggering the drive component. The drive component pushes the clamping arm 505 against the tension of the second elastic element 504, sliding it along the slide towards the second air tube 3. The crossbar 503 guides the clamping arm 505 until it abuts and clamps the connecting tube 401 of the capsule 4. The drive component is then reversed so that it no longer applies force to the clamping arm 505. Under the elastic force of the second elastic element 504, the clamping arm 505 returns to its original position away from the second air tube 3 along the slide, releasing the clamp on the connecting tube 401, allowing the capsule 4 to be removed. Other parts of this embodiment are the same as those in the above embodiment and will not be repeated.

[0050] Example 4:

[0051] This embodiment further defines the structure of capsule 4 based on the above embodiments, such as... Figures 2-4 As shown, a connecting pipe 401 is installed on the capsule 4, and a flange is provided at the top of the connecting pipe 401. The flange abuts against the bottom end of the abutment seat 5, and the clamping arm 505 abuts against the connecting pipe 401. The abutment between the flange and the bottom end of the abutment seat 5 enhances the connection sealing, and the abutment between the clamping arm 505 and the connecting pipe 401 prevents the capsule 4 from falling off, providing double protection for connection reliability.

[0052] The specific implementation process is as follows: The top of the connecting pipe 401 of capsule 4 is equipped with a flange. During installation, the connecting pipe 401 is fitted over the bottom of the second air pipe 3, ensuring the top of the flange fits against the bottom of the abutment seat 5. A pre-set sealing gasket can be installed at the bottom of the abutment seat 5 to enhance sealing. Through the L-shaped movement of the clamping arm 505 of the disassembly and assembly mechanism, the horizontal section of the clamping arm 505 abuts against the outer wall of the connecting pipe 401, and the vertical section abuts against the bottom of the flange, forming a lateral clamping and longitudinal limiting effect, ensuring that the connecting pipe 401 and the second air pipe 3 are coaxial and stably connected. Other parts of this embodiment are the same as those in the above embodiment and will not be repeated.

[0053] Example 5:

[0054] This embodiment further defines the structure of the driving component based on the above embodiments, such as... Figures 2-4 As shown, the driving component includes:

[0055] A drive rod 501 slides through the abutment seat 5; a fixed seat is fixedly mounted on the drive rod 501, and a first elastic element 502 is disposed between the fixed seat and the top end of the abutment seat 5; one end of the drive rod 501 extends to the bottom of the abutment seat 5, and this end abuts against the clamping arm 505. When the drive rod 501 slides under external force, it compresses the first elastic element 502 and pushes the clamping arm 505 to move; after the external force is removed, the first elastic element 502 resets, causing the drive rod 501 to return to its original position, releasing the pushing force on the clamping arm 505.

[0056] The specific implementation process is as follows: When installing capsule 4, the flange of connecting pipe 401 pushes the bottom end of drive rod 501 upward, causing drive rod 501 to slide upward along abutment seat 5, and the fixed seat at its top compresses the first elastic element 502 spring; simultaneously, the bottom end of drive rod 501 pushes clamping arm 505 to slide along the slideway towards connecting pipe 401 until clamping arm 505 clamps connecting pipe 401. When disassembling capsule 4, pull clamping arm 505 downward to move it away from connecting pipe 401. At this time, drive rod 501 loses the thrust of flange, the elastic force of first elastic element 502 recovers, pushing drive rod 501 downward to reset, releasing the thrust on clamping arm 505, and clamping arm 505 resets under the action of second elastic element 504. Other parts of this embodiment are the same as those in the above embodiment and will not be described again.

[0057] Example 6:

[0058] This embodiment further defines the structure of the abutment seat 5 based on the above embodiments, such as... Figures 2-4 As shown, a storage base is provided at the top of the abutment seat 5, and an abutment block is provided at one end of the drive rod 501 located below the abutment seat 5. The abutment block is slidably connected to the inner wall of the storage base. Through the sliding cooperation between the storage base and the abutment block, the movement direction of the drive rod 501 is guided and limited, preventing the drive rod 501 from deviating or tilting during sliding, ensuring its stable pushing of the clamping arm 505, and improving the reliability of the disassembly and assembly mechanism.

[0059] The specific implementation process is as follows: the abutment block at the bottom of the drive rod 501 is embedded in the receiving seat at the top of the abutment seat 5. When the drive rod 501 slides upward under the push of the flange, the abutment block slides vertically along the inner wall of the receiving seat. The side wall of the receiving seat restricts the lateral displacement of the abutment block, ensuring that the drive rod 501 moves only axially. When the drive rod 501 resets downward under the action of the first elastic element 502, the abutment block slides down along the inner wall of the receiving seat and returns to its initial position through the guiding action of the receiving seat, ensuring that the drive rod 501 can accurately cooperate with the clamping arm 505 the next time it works. The other parts of this embodiment are the same as those in the above embodiment and will not be described again.

[0060] It is understood that the working principle and process of the transformer oil conservator capsule sealing detection device structure according to one embodiment of the present utility model, such as the air pressure detection sensor and elastic element, are existing technologies and are well known to those skilled in the art, and will not be described in detail here.

[0061] 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 device for detecting the sealing performance of a transformer oil conservator bladder, characterized in that, include: The detection box (1) has multiple detection chambers inside. The top of the detection chamber is provided with a first air tube (2) and a first air pressure detection sensor (201). The detection head of the first air pressure detection sensor (201) extends into the detection chamber. The second air tube (3) is installed at the top of the detection box (1). The bottom end of the second air tube (3) extends into the detection chamber. The upper end of the side wall of the second air tube (3) is provided with a second air pressure detection sensor (6). The detection head of the second air pressure detection sensor (6) extends into the second air tube (3). The disassembly and assembly mechanism is located on the outer wall of the second trachea (3), and the capsule (4) is quickly connected to the second trachea (3) through the disassembly and assembly mechanism; And a sealing mechanism, which is set on the second trachea (3) for sealing connection between the second trachea (3) and the capsule (4); the sealing mechanism consists of a third air inlet pipe (303) installed on the upper end of the side wall of the second trachea (3), a connecting seat (301) sleeved on the lower end of the side wall of the second trachea (3), and an airbag (302) installed on the outside of the connecting seat (301); the output end of the third air inlet pipe (303) extends into the interior of the second trachea (3) and passes through the side wall of the connecting seat (301) and communicates with the airbag (302).

2. The transformer oil conservator bladder sealing test device according to claim 1, characterized in that, The top of the test box (1) and the test chamber are provided with an installation port (101). The outer wall of the second air pipe (3) is provided with an installation plate (304). The installation plate (304) is connected to the test box (1) by bolts.

3. The transformer oil conservator bladder sealing test device according to claim 1, characterized in that, The disassembly / assembly mechanism includes: The abutment seat (5) is installed on the outer wall of the second air pipe (3); two sets of slides are symmetrically opened on the abutment seat (5), and a crossbar (503) is installed inside the slide. A drive assembly, which is adjustablely mounted on the abutment (5); And a clamping arm (505) is slidably connected to the side wall of the slide. The clamping arm (505) is slidably sleeved outside the crossbar (503). A second elastic element (504) is provided between one side wall of the clamping arm (505) and one end of the slide. The clamping arm (505) is slidably adjusted along the slide by the drive assembly. The clamping arm (505) is L-shaped.

4. The transformer oil conservator bladder sealing test device according to claim 3, characterized in that, The capsule (4) is equipped with a connecting pipe (401), and a flange is provided at the top of the connecting pipe (401). The flange abuts against the bottom of the abutment seat (5), and the clamping arm (505) abuts against the connecting pipe (401).

5. The transformer oil conservator bladder sealing test device according to claim 4, characterized in that, The driving component includes: A drive rod (501) slides through the abutment seat (5); a fixed seat is fixedly provided on the drive rod (501), and a first elastic element (502) is provided between the fixed seat and the top of the abutment seat (5); one end of the drive rod (501) extends to the bottom of the abutment seat (5), and the end abuts against the clamping arm (505).

6. The transformer oil conservator bladder sealing test device according to claim 5, characterized in that, The top of the abutment seat (5) is provided with a storage seat, and the end of the drive rod (501) located below the abutment seat (5) is provided with an abutment block, which is slidably connected to the inner wall of the storage seat.

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