Transformer oil sampling device
The transformer oil sampling device addresses contamination and spillage issues by controlling oil flow and minimizing air exposure, improving the accuracy and cleanliness of oil sampling.
Patent Information
- Application Number
- CN202421864805.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-02
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-08-02
AI Technical Summary
In the prior art, during the sampling process of transformer oil, the sampling is not tight, resulting in gas and moisture dissolution into the oil sample, resulting in distortion of the oil sample, and the sampling process is easy to cause oil to drip and contaminate the ground.
Design a transformer oil sampling device, including a three-way valve, connecting pipe, sampler, dustproof sleeve and flowmeter. By adjusting the status of the three-way valve, first discharge the oil to the waste oil recovery end, and then perform sampling. After sampling, dustproof sleeve is installed to avoid pollution.
It improves sampling accuracy, reduces the possibility of air dissipation into the oil, avoids oil droplets and contaminates the ground, and improves the accuracy of sampling and detection.
Smart Images
Figure CN223107299U_ABST
Abstract
Description
Technical Field
[0001] The present disclosure relates to the technical field of transformer oil sampling, and specifically, to a transformer oil sampling device. Background Art
[0002] By testing the dissolved gas content in transformer oil, it is possible to judge the possible overheating and discharge faults inside oil-filled electrical equipment, and to monitor the development trend, severity, and operating conditions of latent faults inside electrical equipment.
[0003] In the related art, during the process of sampling transformer oil, generally, a sampler is directly used to sample from the oil outlet of the transformer. On the one hand, the process of taking oil samples is not rigorous, increasing the contact time between the oil samples and air, resulting in the dissolution of gas and moisture into the oil samples, leading to the problem of distorted oil samples. On the other hand, oil droplets are likely to drip during the process of taking oil samples, polluting the ground. Utility Model Content
[0004] The purpose of the present disclosure is to provide a transformer oil sampling device to solve the technical problems existing in the related art.
[0005] To achieve the above purpose, the present disclosure provides a transformer oil sampling device, including a three-way valve, a first connecting pipe, a second connecting pipe, a sampler, a dust-proof sleeve, and a flow meter. The three-way valve includes a valve body and a first oil inlet interface, a first oil outlet interface, and a second oil outlet interface connected to the valve body. The first oil inlet interface is connected to the first end of the first connecting pipe, the second end of the first connecting pipe is used to be connected to the oil outlet end of the transformer, the first oil outlet interface is connected to the first end of the second connecting pipe, the second end of the second connecting pipe is used to be connected to the waste oil recovery end, and the sampling port of the sampler is detachably connected to the second oil outlet interface;
[0006] The flow meter is arranged on the three-way valve and is used to measure the flow rate of the oil flowing out from the oil outlet end of the transformer;
[0007] The dust-proof sleeve is detachably sleeved on the second oil outlet interface.
[0008] Optionally, the first connecting pipe is detachably connected to the first oil inlet interface, and the second connecting pipe is detachably connected to the first oil outlet interface.
[0009] Optionally, a first annular protrusion is formed on the outer surface of the end of the first oil inlet interface away from the valve body, and the first end of the first connecting pipe is sleeved on the outer periphery of the first annular protrusion.
[0010] Optionally, the transformer oil sampling device further includes a hose clamp which is locked on the outer periphery of the first connecting pipe and is located between the first annular protrusion and the valve body.
[0011] Optionally, the transformer oil sampling device further includes a connecting ring and a connecting band. The connecting ring is rotatably sleeved on the outer periphery of the second oil outlet interface, and the connecting band is respectively connected to the connecting ring and the dust cover.
[0012] Optionally, an external thread is formed at one end of the second oil outlet interface away from the valve body, and an internal thread is formed inside the dust cover. The dust cover is threadedly connected to the second oil outlet interface.
[0013] Optionally, the inner diameter of the second oil outlet interface gradually increases in the direction away from the valve body.
[0014] Optionally, the first oil inlet interface, the first oil outlet interface, and the second oil outlet interface are all made of transparent materials.
[0015] Optionally, the transformer oil sampling device further includes a switching valve which is arranged on the first connecting pipe and is used to control the on-off of the first connecting pipe.
[0016] Optionally, the flowmeter is arranged on the second oil outlet interface and is used to measure the flow rate of the oil flowing out of the second oil outlet interface.
[0017] With the above technical solution, since the first oil inlet interface is connected to the first end of the first connecting pipe, and the second end of the first connecting pipe is used to be connected to the oil outlet end of the transformer, and the first oil inlet interface is connected to the first end of the first connecting pipe, the first oil outlet interface is connected to the first end of the second connecting pipe, and the second end of the second connecting pipe is used to be connected to the waste oil recovery end. In this way, when it is necessary to take an oil sample from the transformer, the three-way valve can be adjusted so that the first oil outlet interface is first in the open state and the second oil outlet interface is in the closed state. At this time, the oil flowing out from the oil outlet end of the transformer can enter the waste oil recovery end through the first connecting pipe, the first oil inlet interface, the first oil outlet interface and the second connecting pipe. Then, by adjusting the three-way valve again, the second oil outlet interface is in the open state and the first oil outlet interface is in the closed state, and the sampling port of the sampler is connected to the second oil outlet interface. At this time, the oil flowing out from the oil outlet end of the transformer can enter the sampler through the first connecting pipe, the first oil inlet interface and the second oil outlet interface, so as to realize the collection of the oil sample. Moreover, in the above process, the oil near the oil outlet end of the transformer can be first discharged to the waste oil recovery end, and then the oil in the transformer is sampled, so as to reduce the problem of inaccurate oil sampling caused by air dissolving into the oil near the oil outlet end through the oil outlet end of the transformer, and further improve the accuracy of sampling and detection of the oil in the above transformer.
[0018] In addition, after the oil sampling in the transformer is completed, the three-way valve can be adjusted again so that the first oil outlet interface is first in the open state and the second oil outlet interface is in the closed state. At this time, the residual oil in the first connecting pipe, the first oil inlet interface and the second oil outlet interface can flow into the waste oil recovery end through the second connecting pipe. After the dust-proof sleeve is sleeved on the second oil outlet interface, in this way, while the second oil outlet interface can be prevented from being polluted by external air, dust and other impurities, the situation that the oil drips from the second oil outlet interface and pollutes the ground can also be avoided.
[0019] Other features and advantages of the present disclosure will be described in detail in the subsequent specific implementation part. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] The drawings are used to provide a further understanding of the present disclosure, and constitute a part of the specification. Together with the following specific implementation, they are used to explain the present disclosure, but do not constitute a limitation to the present disclosure. In the drawings:
[0021] Figure 1 is an exploded view of a transformer oil sampling device provided by an exemplary embodiment of the present disclosure;
[0022] Figure 2 is a perspective view of a transformer oil sampling device provided by an exemplary embodiment of the present disclosure, wherein the dust-proof sleeve covers the second oil outlet interface.
[0023] Description of Reference Numerals
[0024] 1 - Transformer oil sampling device; 10 - Three - way valve; 11 - Valve body; 12 - First oil inlet interface; 120 - First annular protrusion; 13 - First oil outlet interface; 130 - Second annular protrusion; 14 - Second oil outlet interface; 141 - External thread; 20 - First connecting pipe; 21 - Second connecting pipe; 30 - Sampler; 40 - Dust cover; 41 - Internal thread; 50 - Flowmeter; 60 - Hose clamp; 70 - Connecting ring; 80 - Connecting belt; 90 - On - off valve. Detailed Embodiment
[0025] The following will describe in detail the specific embodiments of the present disclosure with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only for the purpose of illustration and explanation of the present disclosure, and are not intended to limit the present disclosure.
[0026] In the present disclosure, unless otherwise stated, the orientation terms such as "upper", "lower", "left", "right", etc. indicate the orientation or positional relationship for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, as well as a specific orientation structure and operation. Therefore, it should not be construed as a limitation of the present disclosure. The terms "inner" and "outer" refer to the inside and outside of the corresponding structural contour.
[0027] In addition, it should be noted that the terms such as "first", "second", etc. are used to distinguish one element from another, and do not have sequentiality and importance. In addition, in the description with reference to the accompanying drawings, the same reference numerals in different drawings represent the same elements.
[0028] In the description of the present disclosure, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "connect", "be connected", "install" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.
[0029] Refer to Figures 1 to 2As shown in the figure, the present disclosure provides a transformer oil sampling device 1, which includes a three-way valve 10, a first connecting pipe 20, a second connecting pipe 21, a sampler 30, a dust cover 40, and a flow meter 50. The three-way valve 10 includes a valve body 11, a first oil inlet interface 12, a first oil outlet interface 13, and a second oil outlet interface 14 connected to the valve body 11. The first oil inlet interface 12 is connected to the first end of the first connecting pipe 20, the second end of the first connecting pipe 20 is used to be connected to the oil outlet end of the transformer, the first oil outlet interface 13 is connected to the first end of the second connecting pipe 21, the second end of the second connecting pipe 21 is used to be connected to the waste oil recovery end, the sampling port of the sampler 30 is detachably connected to the second oil outlet interface 14, the flow meter 50 is arranged on the three-way valve 10 and is used to measure the flow rate of the oil flowing out from the oil outlet end of the transformer, and the dust cover 40 is detachably sleeved on the second oil outlet interface 14.
[0030] Through the above technical solution, since the first oil inlet interface 12 is connected to the first end of the first connecting pipe 20, and the second end of the first connecting pipe 20 is used to be connected to the oil outlet end of the transformer, and the first oil inlet interface 12 is connected to the first end of the first connecting pipe 20, the first oil outlet interface 13 is connected to the first end of the second connecting pipe 21, and the second end of the second connecting pipe 21 is used to be connected to the waste oil recovery end. In this way, when it is necessary to take an oil sample from the transformer, the three-way valve 10 can be adjusted to make the first oil outlet interface 13 in the open state first, and the second oil outlet interface 14 in the closed state. At this time, the oil flowing out from the oil outlet end of the transformer can enter the waste oil recovery end through the first connecting pipe 20, the first oil inlet interface 12, the first oil outlet interface 13, and the second connecting pipe 21. Then, by adjusting the three-way valve 10 again, the second oil outlet interface 14 is made in the open state, and the first oil outlet interface 13 is in the closed state. Then, the sampling port of the sampler 30 is connected to the second oil outlet interface 14. At this time, the oil flowing out from the oil outlet end of the transformer can enter the sampler 30 through the first connecting pipe 20, the first oil inlet interface 12, and the second oil outlet interface 14, so as to realize the collection of the oil. Moreover, in the above process, the oil near the oil outlet end of the transformer can be discharged to the waste oil recovery end first, and then the oil in the transformer can be sampled, so as to reduce the problem of inaccurate oil sampling caused by air dissolving into the oil near the oil outlet end through the oil outlet end of the transformer, and further improve the accuracy of sampling and detection of the oil in the above transformer.
[0031] In addition, after the oil sampling in the transformer is completed, the three-way valve 10 can be adjusted again so that the first oil outlet interface 13 is in the open state and the second oil outlet interface 14 is in the closed state. At this time, the residual oil in the first connecting pipe 20, the first oil inlet interface 12, and the second oil outlet interface 14 can flow into the waste oil recovery end through the second connecting pipe 21. After the dust cover 40 is sleeved on the second oil outlet interface 14, in this way, it can avoid the second oil outlet interface 14 from being contaminated by external air, dust and other impurities, and at the same time, it can also avoid the oil from dripping out of the second oil outlet interface 14 and polluting the ground.
[0032] For the convenience of oil sampling operation in the transformer, optionally, the first connecting pipe 20 and the first oil inlet interface 12 are detachably connected, and the second connecting pipe 21 and the first oil outlet interface 13 are detachably connected. In this way, when oil sampling is required, the first connecting pipe 20 can be connected to the first oil inlet interface 12, and the second connecting pipe 21 can be connected to the first oil outlet interface 13. At this time, by adjusting the three-way valve, the communication between the first connecting pipe 20 and the second connecting pipe 21 can be realized, and the oil can flow in the first connecting pipe 20 and the second connecting pipe 21; similarly, after the sampling is completed, the first connecting pipe 20 can be detached from the first oil inlet interface 12, and the second connecting pipe 21 can be detached from the first oil outlet interface 13, so as to reduce the interference or interference during the operation of the transformer.
[0033] The present disclosure does not limit the detachable connection methods between the first connecting pipe 20 and the first oil inlet interface 12, and between the second connecting pipe 21 and the first oil outlet interface 13. Any methods such as clamping connection, fastener connection, flange connection, etc. can be adopted. In short, as long as the connection between the two can be realized.
[0034] In an exemplary embodiment provided by the present disclosure, as Figure 1 shown, a first annular protrusion 120 is formed on the outer surface of the end of the first oil inlet interface 12 away from the valve body 11, and the first end of the first connecting pipe 20 is sleeved on the outer periphery of the first annular protrusion 120. When the first connecting pipe 20 is sleeved on the first oil inlet interface 12, since the first annular protrusion 120 is provided on the first oil inlet interface 12, in this way, the first annular protrusion 120 can abut against and press on the inner surface of the first connecting pipe 20 to reduce the gap between the inner surface of the first connecting pipe 20 and the outer surface of the first oil inlet interface 12, so as to improve the sealing performance between the first oil inlet interface 12 and the first connecting pipe 20.
[0035] In order to further improve the sealing performance between the first oil inlet interface 12 and the first connecting pipe 20, in an exemplary embodiment provided by the present disclosure, optionally, as Figure 1 、Figure 2 As shown, the transformer oil sampling device 1 may further include a hose clamp 60. The hose clamp 60 is locked on the outer periphery of the first connecting pipe 20, and the hose clamp 60 is located between the first annular protrusion 120 and the valve body 11. In this way, after the first connecting pipe 20 is sleeved on the outer periphery of the first oil inlet interface 12, the hose clamp 60 is locked on the outer periphery of the first connecting pipe 20, so as to press the first connecting pipe 20 against the outer surface of the first oil inlet interface 12, further reducing the gap between the first connecting pipe 20 and the first oil inlet interface 12, and avoiding the problems of oil leakage from the gap between the first connecting pipe 20 and the first oil inlet interface 12 or external air entering the oil from the gap between the first connecting pipe 20 and the first oil inlet interface 12, and further improving the accuracy of sampling.
[0036] In an exemplary embodiment provided by the present disclosure, the first connecting pipe 20 and the second connecting pipe 21 may be made of elastic materials such as rubber and / or latex. In this way, when the first end of the first connecting pipe 20 made of the above elastic material is sleeved on the first oil inlet interface 12 and the first end of the second connecting pipe 21 is sleeved on the first oil outlet interface 13, under its own elastic action, it can automatically tighten on the first oil inlet interface 12 and the second oil inlet interface, so that the first connecting pipe 20 can keep in close contact with the first oil inlet interface 12 and the second connecting pipe 21 can keep in close contact with the first oil outlet interface 13, thereby improving the connection sealing performance.
[0037] Moreover, since the hose clamp 60 is located between the first annular protrusion 120 and the valve body 11, the first annular protrusion 120 can also play a role in positioning and limiting the hose clamp 60, so as to avoid the situation that the hose clamp 60 displaces in the length direction of the first connecting pipe 20, and improve the stability and firmness during the fastening process of the hose clamp 60.
[0038] Similarly, a second annular protrusion 130 may also be formed on the outer surface of one end of the first oil outlet interface 13 away from the valve body 11, and the first end of the second connecting pipe 21 is sleeved on the outer periphery of the second annular protrusion 130.
[0039] Optionally, as Figure 1 、 Figure 2 shown, the transformer oil sampling device 1 may further include a connecting ring 70 and a connecting belt 80. The connecting ring 70 is rotatably sleeved on the outer periphery of the second oil outlet interface 14, and the connecting belt 80 is respectively connected to the connecting ring 70 and the dust cover 40. When sampling is required, the dust cover 40 can be detached from the second oil outlet interface 14. After the dust cover 40 is detached from the second oil outlet interface 14, it can still be arranged around the second oil outlet interface 14 under the connection of the connecting belt 80, so that the operator can timely sleeve the dust cover 40 on the second oil outlet interface 14 after the sampling is completed.
[0040] The present disclosure does not limit the detachable manner between the dust cover 40 and the second oil outlet interface 14, and connection can be made by means such as snap connection, fasteners, etc. For example, in an exemplary embodiment provided by the present disclosure, optionally, as Figure 1 shown, an external thread 141 may be formed at one end of the second oil outlet interface 14 away from the valve body 11, and an internal thread 41 is formed inside the dust cover 40, and the dust cover 40 is threadedly connected to the second oil outlet interface 14. In this way, the quick disassembly operation of the dust cover 40 can be realized by screwing, which has the advantages of simple structure and convenient operation, and can also achieve a better sealing effect.
[0041] Similarly, a threaded structure may also be formed at the sampling port of the sampler 30. In this way, during the sampling process of the sampler 30, the threaded structure (internal thread 41 or external thread 141) can be threadedly connected to the external thread 141 on the second oil outlet interface 14, thereby improving the sealing performance between the sampler 30 and the second oil outlet interface 14 and avoiding oil leakage from the gap between the sampler 30 and the second oil outlet interface 14 during the sampling process.
[0042] It should be noted that for the embodiment in which the connecting ring 70 is sleeved on the outer periphery of the second oil outlet interface 14 so as to be rotatable about the axial direction of the second oil outlet interface 14, and the connecting belt 80 is respectively connected to the connecting ring 70 and the dust cover 40, precisely because the connecting ring 70 is sleeved on the outer periphery of the second oil outlet interface 14 so as to be rotatable about the axial direction of the second oil outlet interface 14, during the process of screwing the dust cover 40 onto the second oil outlet interface 14, the connecting ring 70 and the connecting belt 80 can rotate synchronously with the dust cover 40, thereby avoiding interference or obstruction of the connecting ring 70 and the connecting belt 80 during the rotation of the dust cover 40.
[0043] Optionally, as Figure 1 shown, along the direction away from the valve body 11, the inner diameter of the second oil outlet interface 14 gradually increases. On the one hand, the second oil outlet interface 14 with an inner diameter gradually increasing along the direction away from the valve body 11 can better adapt to the shape of the sampling port of the sampler 30. On the other hand, when the sampling port of the sampler 30 is inserted into the second oil outlet interface 14, it is also more convenient for the outer surface of the sampling port to be in close contact with the inner surface of the second oil outlet interface 14.
[0044] Optionally, the first oil inlet interface 12, the first oil outlet interface 13, and the second oil outlet interface 14 are all made of transparent materials. In this way, during sampling, sampling personnel can intuitively judge the inflow, outflow, and remaining conditions of the oil fluid by observing the first oil inlet interface 12, the first oil outlet interface 13, and the second oil outlet interface 14, thereby making it more convenient to adjust the three-way valve 10.
[0045] In addition, the aforementioned first connecting pipe 20 and second connecting pipe 21 can also be made of transparent materials, facilitating the sampler to observe the flow state of the oil fluid within the first connecting pipe 20 and second connecting pipe 21.
[0046] In the embodiments provided by the present disclosure, the aforementioned first oil inlet interface 12, first oil outlet interface 13, second oil outlet interface 14, first connecting pipe 20, and second connecting pipe 21 can be made of glass, rubber, or plastic.
[0047] To further facilitate the control of the oil fluid within the transformer, as Figure 1 shown, optionally, the transformer oil sampling device 1 can further include a switching valve 90, which is disposed on the first connecting pipe 20 and is used to control the on-off of the first connecting pipe 20. In this way, when sampling is required, the switching valve 90 can be opened. At this time, the oil fluid within the transformer can enter the first liquid inlet interface through the first connecting pipe 20. After the sampling is completed, the switching valve 90 can be closed, thereby preventing the oil fluid within the transformer from continuously flowing into the three-way valve 10 through the first connecting pipe 20, resulting in oil leakage and waste.
[0048] Optionally, as Figure 1 shown, a flowmeter 50 is disposed on the second oil outlet interface 14 and is used to measure the flow rate of the oil fluid flowing out from the second oil outlet interface 14. In this way, during the sampling process, the flowmeter 50 can measure the flow rate of the oil fluid flowing out from the second oil outlet interface 14 and / or the total amount of the oil fluid within a certain period of time, enabling the sampler 30 to accurately collect the oil fluid and avoid wasting the oil fluid.
[0049] Alternatively, the flowmeter 50 can also be connected to the first oil inlet interface 12 or the first oil outlet interface 13. In this way, the flowmeter 50 can measure the flow rate of the oil fluid flowing out from the transformer and / or the total amount of the oil fluid within a certain period of time, as well as the flow rate of the oil fluid flowing into the waste oil recovery end and / or the total amount of the oil fluid within a certain period of time.
[0050] The preferred embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings. However, the present disclosure is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.
[0051] In addition, it should be noted that, in the above specific embodiments, the various specific technical features described can be combined in any appropriate manner without contradiction. To avoid unnecessary repetition, the present disclosure will not separately describe various possible combination methods.
[0052] In addition, any combination can be made among various different embodiments of the present disclosure, as long as it does not violate the idea of the present disclosure, and the same should be regarded as the content disclosed by the present disclosure.
Claims
1. A transformer oil sampling device, characterized in that, It includes a three-way valve, a first connecting pipe, a second connecting pipe, a sampler, a dust cover and a flowmeter. The three-way valve includes a valve body and a first oil inlet interface, a first oil outlet interface and a second oil outlet interface connected to the valve body. The first oil inlet interface is connected to the first end of the first connecting pipe. The second end of the first connecting pipe is used to connect to the oil outlet end of the transformer. The first oil outlet interface is connected to the first end of the second connecting pipe. The second end of the second connecting pipe is used to connect to the waste oil recovery end. The sampling port of the sampler is detachably connected to the second oil outlet interface; The flowmeter is arranged on the three-way valve and is used to measure the flow rate of the oil flowing out of the oil outlet end of the transformer; The dust cover is detachably sleeved on the second oil outlet interface.
2. The transformer oil sampling device according to claim 1, characterized in that, The first connecting pipe is detachably connected to the first oil inlet interface, and the second connecting pipe is detachably connected to the first oil outlet interface.
3. The transformer oil sampling device according to claim 2, characterized in that, A first annular protrusion is formed on the outer surface of the end of the first oil inlet interface away from the valve body, and the first end of the first connecting pipe is sleeved on the outer periphery of the first annular protrusion.
4. The transformer oil sampling device according to claim 3, wherein The transformer oil sampling device further includes a hose clamp. The hose clamp is locked on the outer periphery of the first connecting pipe, and the hose clamp is located between the first annular protrusion and the valve body.
5. The transformer oil sampling device according to claim 1, wherein The transformer oil sampling device further includes a connecting ring and a connecting band. The connecting ring is rotatably sleeved on the outer periphery of the second oil outlet interface, and the connecting band is respectively connected to the connecting ring and the dust cover.
6. The transformer oil sampling device according to any one of claims 1-5, characterized in that, An external thread is formed at the end of the second oil outlet interface away from the valve body, and an internal thread is formed inside the dust cover. The dust cover is threadedly connected to the second oil outlet interface.
7. The transformer oil sampling device according to any one of claims 1-5, characterized in that, In the direction away from the valve body, the inner diameter of the second oil outlet interface gradually increases.
8. The transformer oil sampling device according to any one of claims 1-5, characterized in that The first oil inlet interface, the first oil outlet interface and the second oil outlet interface are all made of transparent materials.
9. The transformer oil sampling device according to any one of claims 1-5, characterized in that, The transformer oil sampling device further includes a switching valve. The switching valve is arranged on the first connecting pipe and is used to control the on-off of the first connecting pipe.
10. The transformer oil sampling device according to any one of claims 1-5, characterized in that, The flowmeter is arranged on the second oil outlet interface and is used to measure the flow rate of the oil flowing out of the second oil outlet interface.