A sampling device for transformer oil detection

Abstract

The utility model relates to transformer oil sampling technical field, and disclose a kind of sampling device for transformer oil detection, including sampling tube, the lower inside of sampling tube is movably sleeved with piston, the upper side of sampling tube is equipped with handle, the bottom of handle is fixedly connected with connecting rod, the bottom of connecting rod is passed through the top of sampling tube and is fixedly connected in the top of piston.The utility model is moved by adopting piston inside sampling tube, it is convenient to draw transformer oil into sampling tube inside, before sampling, by the cooperation of screw rod and sliding block, it is convenient to drive positioning block to move in the outer wall of identification rod, and by observing the sampling amount scale mark of the position where positioning block is located, the sampling amount of subsequent transformer oil can be determined, subsequent handle, connecting rod and piston are moved to sample, when handle is moved to the lower side of positioning block, handle can be positioned, to reach the required sampling amount, using this kind of way is convenient for accurate control the sampling amount of transformer oil.

Description

Technical Field

[0001] This utility model relates to the field of transformer oil sampling technology, and more specifically to a sampling device for transformer oil testing. Background Technology

[0002] Transformer oil plays a vital role in power systems. It is used not only for insulation and cooling, but also plays a key role in the normal operation of equipment. However, after long-term use, transformer oil will age due to factors such as heat and moisture, lose its original performance, and affect the normal operation of equipment. In order to ensure the normal operation of transformers and extend the service life of equipment, it is necessary to conduct regular sampling tests on transformer oil.

[0003] Currently, when sampling transformer oil, the sampling tube is usually inserted into the oil tank through the oil port for extraction. However, since the sampling tube is inside the oil tank, it is difficult for the sampling personnel to observe and control the sampling amount, which needs to be improved. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a sampling device for transformer oil testing to solve the problems existing in the background art.

[0005] This utility model provides the following technical solution: a sampling device for transformer oil testing, comprising a sampling tube, a piston movably sleeved inside the lower part of the sampling tube, a handle provided above the sampling tube, a connecting rod fixedly connected to the bottom of the handle, the bottom end of the connecting rod penetrating the top end of the sampling tube and fixedly connected to the top of the piston, an indicator rod fixedly connected to the left side of the top end of the sampling tube, the left side of the inside of the handle slidingly sleeved on the outer wall of the indicator rod, a sampling volume scale marking provided on the front of the indicator rod, and a sliding upper part of the outer wall of the indicator rod. A positioning block is fitted onto the labeling rod. An installation groove is provided on the left side of the labeling rod. A slider is slidably connected inside the installation groove. The left side of the inner wall of the positioning block is fixedly connected to the left side of the slider. A screw is provided inside the installation groove. The inner thread of the slider is connected to the outer wall of the screw. A sealing plate is provided at the bottom end of the sampling tube. The right side of the sampling tube and the sealing plate is connected by a hinge. A pull rod is provided on the right side of the sampling tube. The bottom end of the pull rod is connected to a hinge rod by a hinge. The bottom end of the hinge rod is connected to the right side of the top of the sealing plate by a hinge.

[0006] Furthermore, a limiting sleeve is fixedly connected to the lower part of the outer wall of the signpost, and the top of the limiting sleeve overlaps the left side of the bottom of the handle.

[0007] Furthermore, the bottom end of the screw is rotatably mounted on the bottom of the inner wall of the mounting groove, and the top end of the screw extends above the marking rod and is fixedly connected to a knob.

[0008] Furthermore, a sealing ring is fixedly embedded at the top of the sealing plate, a sealing groove is provided at the bottom end of the sampling tube, and the upper part of the outer wall of the sealing ring is located inside the sealing groove.

[0009] Furthermore, a protective cover is fixedly connected to the upper right side of the sampling tube, the top end of the pull rod passes through the protective cover and is located above the protective cover, a baffle is provided at the lower inside of the protective cover, the inside of the baffle is fixedly connected to the outer wall of the pull rod, a spring is fixedly connected to the upper part of the baffle, the inside of the spring is movably sleeved on the outer wall of the pull rod, and the top end of the spring is fixedly connected to the top of the inner wall of the protective cover.

[0010] Furthermore, an L-shaped limiting plate is provided on the upper right side of the sampling tube. A straight rod is fixedly connected inside the L-shaped limiting plate. A fixing block is fixedly connected to the top of the pull rod. The outer wall of the fixing block is slidably connected to the inside of the L-shaped limiting plate. The inside of the fixing block is slidably connected to the outer wall of the straight rod. A limiting block is fixedly connected to the right side of the top of the sampling tube. The limiting block is located on the left side of the L-shaped limiting plate.

[0011] The technical effects and advantages of this utility model are as follows: 1. This utility model uses a piston that moves inside the sampling tube to facilitate the extraction of transformer oil into the sampling tube. Before sampling, the screw and slider work together to drive the positioning block to move on the outer wall of the marker rod. By observing the sampling quantity scale markings at the position of the positioning block, the subsequent transformer oil sampling quantity can be determined. Subsequently, the handle, connecting rod, and piston are moved to perform sampling. When the handle moves below the positioning block, it can be limited to achieve the required sampling quantity. This method facilitates precise control of the transformer oil sampling quantity.

[0012] 2. This utility model utilizes an L-shaped limiting plate, a straight rod, a fixing block, a protective cover, a pull rod, a hinge rod, a baffle, a spring, and a limiting block to facilitate the opening or closing of the sealing plate at the bottom of the sampling tube. The sealing plate is opened during sampling and closed after sampling. A sealing ring is used to increase the sealing between the sealing plate and the sampling tube, thereby protecting the oil sample inside the sampling tube and preventing the oil sample from contacting impurities in the outside air. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0014] Figure 2 This is a schematic diagram of the overall structure of this utility model from another perspective.

[0015] Figure 3 This is a cross-sectional view of the overall structure of this utility model.

[0016] Figure 4This is a cross-sectional view of the overall planar structure of this utility model.

[0017] Figure 5 For the present utility model Figure 4 Enlarged schematic diagram of the structure at point A in the middle.

[0018] Figure 6 This is a schematic diagram of the sampling tube, sealing plate, sealing ring, and sealing groove of this utility model.

[0019] The attached diagram is labeled as follows: 1. Sampling tube; 2. Handle; 21. Connecting rod; 22. Piston; 23. Identifier rod; 24. Limiting sleeve; 25. Mounting groove; 26. Knob; 27. Screw; 28. Slider; 29. ​​Positioning block; 3. Sealing plate; 31. Sealing ring; 32. Sealing groove; 4. L-shaped limiting plate; 41. Straight rod; 42. Fixing block; 43. Protective cover; 44. Pull rod; 45. Hinge rod; 46. Baffle; 47. Spring; 5. Limiting block. Detailed Implementation

[0020] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. The sampling device for transformer oil testing involved in this utility model is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0021] Example 1: like Figure 1-6 As shown, a sampling device for testing transformer oil includes a sampling tube 1. A piston 22 is movably sleeved inside the lower part of the sampling tube 1. A handle 2 is provided above the sampling tube 1. A connecting rod 21 is fixedly connected to the bottom of the handle 2. The bottom end of the connecting rod 21 passes through the top end of the sampling tube 1 and is fixedly connected to the top of the piston 22. The handle 2 allows the user to easily move the connecting rod 21 and the piston 22, thereby drawing transformer oil into the sampling tube 1. A marker rod 23 is fixedly connected to the left side of the top of the sampling tube 1. The left side of the inside of the handle 2 is slidably sleeved on the outer wall of the marker rod 23. A limiting sleeve 24 is fixedly connected to the lower part of the outer wall of the marker rod 23. The top of the limiting sleeve 24 overlaps the left side of the bottom of the handle 2. The limiting sleeve 24 is set to facilitate the lower part of the handle 2. The front of the indicator rod 23 is marked with a sampling quantity scale. A positioning block 29 is slidably fitted onto the upper part of the outer wall of the indicator rod 23. An installation groove 25 is provided on the left side of the indicator rod 23. A slider 28 is slidably connected inside the installation groove 25. The left side of the inner wall of the positioning block 29 is fixedly connected to the left side of the slider 28. A screw 27 is provided inside the installation groove 25. The internal thread of the slider 28 is connected to the outer wall of the screw 27. The bottom end of the screw 27 is rotatably installed at the bottom of the inner wall of the installation groove 25. The top end of the screw 27 extends to the top of the indicator rod 23 and is fixedly connected to a knob 26. Through the cooperation of the knob 26, the screw 27 and the slider 28, the positioning block 29 can be easily driven to slide on the outer wall of the indicator rod 23. By observing the sampling quantity scale of the indicator rod 23 at the position of the positioning block 29, the sampling quantity of the transformer oil can be determined.

[0022] Example 2: like Figure 1-6 As shown, the bottom end of the sampling tube 1 is provided with a sealing plate 3, and a sealing ring 31 is fixedly embedded in the top of the sealing plate 3. A sealing groove 32 is opened at the bottom end of the sampling tube 1, and the upper part of the outer wall of the sealing ring 31 is set inside the sealing groove 32. Through the setting of the sealing plate 3 and the sealing ring 31, it is easy to seal the bottom end of the sampling tube 1, protect the oil sample inside the sampling tube 1, and prevent the oil sample from contacting impurities in the outside air. The sampling tube 1 and the sealing plate 3 are connected on the right side by a hinge. A pull rod 44 is provided on the right side of the sampling tube 1. The bottom end of the pull rod 44 is connected to a hinge rod 45 by a hinge. The bottom end of the hinge rod 45 is connected to the top right side of the sealing plate 3 by a hinge. A protective cover 43 is fixedly connected to the upper right side of the sampling tube 1. The top end of the pull rod 44 passes through the protective cover 43 and is located above the protective cover 43. A baffle 46 is provided at the lower inside of the protective cover 43. The inside of the baffle 46 is fixedly connected to the outer wall of the pull rod 44. A spring 47 is fixedly connected to the top of the baffle 46. The inside of the spring 47 is movably sleeved on the outer wall of the pull rod 44. The top end of the spring 47 is fixedly connected to the top of the inner wall of the protective cover 43. An L-shaped limiting plate 4 is provided on the upper right side of the sampling tube 1. A straight rod 41 is fixedly connected to the inside of the L-shaped limiting plate 4. A fixing block 42 is fixedly connected to the top of the pull rod 44. The outer wall of the fixing block 42 is slidably connected to the inside of the L-shaped limiting plate 4. The internal sliding connection is to the outer wall of the straight rod 41. The right side of the top of the sampling tube 1 is fixedly connected to the limiting block 5. The limiting block 5 is located on the left side of the L-shaped limiting plate 4. Through the setting of the L-shaped limiting plate 4, the pull rod 44 and the hinge rod 45 can be moved. The bottom end of the hinge rod 45 drives one side of the sealing plate 3 to move, thereby opening the sealing plate 3. While the pull rod 44 is moving, it can compress the spring 47 upward through the baffle 46 and then move the L-shaped limiting plate 4 to the left. The L-shaped limiting plate 4 can drive the straight rod 41 to slide on the outer wall of the fixed block 42 and place the inner side of the L-shaped limiting plate 4 on the top of the limiting block 5. The height of the L-shaped limiting plate 4 is limited by the limiting block 5. When the sealing plate 3 is closed, the L-shaped limiting plate 4 can be removed from the limiting block 5. The elasticity of the spring 47 drives the baffle 46, pull rod 44, hinge rod 45 and sealing plate 3 to move, thereby closing the sealing plate 3 and increasing the sealing of the bottom of the sampling tube 1.

[0023] In summary, as Figure 1-6As shown, this sampling device for transformer oil testing, in use, first inserts the sampling tube 1 through the transformer's oil port into the oil tank. At this time, the sampling personnel move the fixed block 42, pull rod 44, and hinge rod 45 upwards via the L-shaped limiting plate 4. The bottom end of the hinge rod 45 drives one side of the sealing plate 3 to move, thereby opening the sealing plate 3. Simultaneously, the pull rod 44 compresses the spring 47 upwards via the baffle 46 inside the protective cover 43, and then moves the L-shaped limiting plate 4 to the left. The L-shaped limiting plate 4 can drive the straight rod 41 to slide on the outer wall of the fixed block 42, placing the inner left side of the L-shaped limiting plate 4 on top of the limiting block 5. The limiting block 5 limits the height of the L-shaped limiting plate 4. By rotating the knob 26 and the screw 27, the screw 27 drives the slider 28 to slide inside the mounting groove 25. The slider 28 also drives the positioning block 29 to the marked position. The outer wall of the identification rod 23 slides. By observing the sampling quantity scale marking on the positioning block 29, the sampling quantity of transformer oil can be determined. Then, the handle 2, connecting rod 21 and piston 22 are moved. The piston 22 is used to draw transformer oil into the sampling tube 1 for sampling. When the handle 2 moves to the bottom of the positioning block 29, the positioning block 29 limits the handle 2, thereby accurately reaching the required sampling quantity. After sampling, the L-shaped limiting plate 4 is removed from the limiting block 5. The spring 47's elasticity drives the baffle 46, pull rod 44, hinge rod 45 and sealing plate 3 to move, closing the sealing plate 3 and placing the sealing ring 31 on the sealing plate 3 inside the sealing groove 32, thereby increasing the sealing of the bottom of the sampling tube 1 and protecting the oil sample inside the sampling tube 1, reducing the oil sample's contact with impurities in the outside air.

[0024] All standard parts used in this application can be purchased from the market, and can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. The installation methods between equipment are also the same as conventional installation methods in the prior art. For example, the connection position of valve components is provided with anti-leakage rubber strips, the outside of threaded rods or lead rods is provided with dust covers, and the equipment can be driven by either built-in batteries or external power supply. The control method is automatic control by a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art and is common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, this utility model will not explain the control method and circuit connection in detail. The controller can be an external controller or installed in a position that does not affect the use of this device. The controller can play a control role for the electrical components mentioned in this document, and the controller is a conventional known device.

[0025] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change. Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other. Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A sampling device for transformer oil testing, comprising a sampling tube (1), characterized in that, A piston (22) is movably fitted inside the lower part of the sampling tube (1). A handle (2) is provided above the sampling tube (1). A connecting rod (21) is fixedly connected to the bottom of the handle (2). The bottom end of the connecting rod (21) passes through the top end of the sampling tube (1) and is fixedly connected to the top of the piston (22). A marker rod (23) is fixedly connected to the left side of the top end of the sampling tube (1). The left side of the handle (2) is slidably fitted onto the outer wall of the marker rod (23). A sampling volume scale mark is provided on the front of the marker rod (23). A positioning block (29) is slidably fitted onto the upper part of the outer wall of the marker rod (23). An installation groove is provided on the left side of the marker rod (23). (25), a slider (28) is slidably connected inside the mounting groove (25), the left side of the inner wall of the positioning block (29) is fixedly connected to the left side of the slider (28), a screw (27) is provided inside the mounting groove (25), the inner thread of the slider (28) is connected to the outer wall of the screw (27), a sealing plate (3) is provided at the bottom end of the sampling tube (1), the right side of the sampling tube (1) and the sealing plate (3) is connected by a hinge, a pull rod (44) is provided on the right side of the sampling tube (1), the bottom end of the pull rod (44) is connected by a hinge rod (45), and the bottom end of the hinge rod (45) is connected by a hinge to the right side of the top of the sealing plate (3).

2. The sampling device for transformer oil testing according to claim 1, characterized in that: A limiting sleeve (24) is fixedly connected to the lower part of the outer wall of the signpost (23), and the top of the limiting sleeve (24) overlaps the left side of the bottom of the handle (2).

3. The sampling device for transformer oil testing according to claim 1, characterized in that: The bottom end of the screw (27) is rotatably mounted on the bottom of the inner wall of the mounting groove (25), and the top end of the screw (27) extends above the marker rod (23) and is fixedly connected to a knob (26).

4. The sampling device for transformer oil testing according to claim 1, characterized in that: A sealing ring (31) is fixedly embedded on the top of the sealing plate (3), and a sealing groove (32) is opened at the bottom end of the sampling tube (1). The upper part of the outer wall of the sealing ring (31) is set inside the sealing groove (32).

5. A sampling device for transformer oil testing according to claim 1, characterized in that: A protective cover (43) is fixedly connected to the upper right side of the sampling tube (1). The top end of the pull rod (44) passes through the protective cover (43) and is located above the protective cover (43). A baffle (46) is provided at the lower inside of the protective cover (43). The inside of the baffle (46) is fixedly connected to the outer wall of the pull rod (44). A spring (47) is fixedly connected to the upper part of the baffle (46). The inside of the spring (47) is movably sleeved on the outer wall of the pull rod (44). The top end of the spring (47) is fixedly connected to the top of the inner wall of the protective cover (43).

6. The sampling device for transformer oil testing according to claim 1, characterized in that: An L-shaped limiting plate (4) is provided on the upper right side of the sampling tube (1). A straight rod (41) is fixedly connected inside the L-shaped limiting plate (4). A fixing block (42) is fixedly connected to the top of the pull rod (44). The outer wall of the fixing block (42) is slidably connected to the inside of the L-shaped limiting plate (4). The inside of the fixing block (42) is slidably connected to the outer wall of the straight rod (41). A limiting block (5) is fixedly connected to the right side of the top of the sampling tube (1). The limiting block (5) is located on the left side of the L-shaped limiting plate (4).

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