A transformer oil chromatography online monitoring device
By installing insulating sleeves and insulating heads on the oil supply pipe, return pipe, and connector of the transformer oil chromatography online monitoring device, the leakage problem caused by transformer circuit faults was solved, the equipment safety and service life were improved, and maintenance costs were reduced.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU HONGNENG POWER TECH CO LTD
- Filing Date
- 2025-03-25
- Publication Date
- 2026-07-31
AI Technical Summary
When a transformer experiences a circuit fault, it can cause leakage current to the detection equipment, posing a safety hazard.
Insulating sleeves and insulating heads made of polyvinyl chloride plastic are installed on the oil pipeline, return pipeline and connectors to provide additional electrical insulation protection and prevent current leakage and corrosion.
It effectively prevents leakage and corrosion, reduces the frequency of equipment failure, ensures the safety of equipment and personnel, extends service life, and reduces maintenance and repair costs.
Smart Images
Figure CN224581483U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of transformer oil testing, specifically relating to an online chromatographic monitoring device for transformer oil. Background Technology
[0002] The transformer oil chromatography online monitoring device is a device used to monitor the dissolved gas composition in transformer oil in real time. By analyzing the gas components in the transformer oil, this device helps users promptly identify the transformer's operating status and potential faults. The device can detect major gaseous components in the transformer oil online, such as hydrogen, methane, ethylene, carbon monoxide, and carbon dioxide, to determine the insulation condition and overall health of the transformer.
[0003] However, when a transformer experiences a circuit fault, it can cause leakage current to the testing equipment, posing a safety hazard to personnel and equipment. Utility Model Content
[0004] The purpose of this invention is to provide an online transformer oil chromatography monitoring device to solve the problem mentioned in the background art that leakage current to the detection device may occur when a transformer experiences a circuit fault.
[0005] To achieve the above objectives, this utility model provides the following technical solution: an online monitoring device for transformer oil chromatography, comprising a main body and a detector installed inside the main body;
[0006] The lower end of the detector is equipped with a suction pump to guide the flow of transformer oil;
[0007] An oil delivery pipe is provided on the outer wall of the left end of the suction pump to extract transformer oil from the transformer.
[0008] A return oil pipe is provided at the front of the oil supply pipe to send the tested transformer oil back. Both the other end of the oil supply pipe and the return oil pipe are provided with connectors to connect to the corresponding interfaces on the transformer.
[0009] The outer circular walls of the oil supply pipe and the return pipe are fitted with insulating sleeves, and the outer circular walls of the two connectors are fitted with insulating heads.
[0010] Preferably, each of the two insulating heads has a movable head at its left end, and each of the two movable heads has a filling ring inside to fill the gap between the movable head and the connector.
[0011] Preferably, the inner circular walls of both filling rings are provided with threads.
[0012] Preferably, the left outer wall of each of the two connectors is provided with a threaded hole, and the right outer wall of each of the two movable heads is provided with a threaded ring to engage with the threaded hole and restrict the position of the movable head.
[0013] Preferably, the inner circular walls of both connectors are provided with filters.
[0014] Preferably, a power supply is provided on the lower inner wall of the body to supply power to electrical equipment, and a signal terminal is provided on the upper side of the power supply to transmit and receive signals.
[0015] Preferably, a base is fixedly connected to the lower outer wall of the body, and multiple heat dissipation holes are opened inside the right outer wall of the body.
[0016] Preferably, a cabinet door is internally connected to the front outer wall of the machine body, and a handle is provided on the front outer wall of the cabinet door to drive the cabinet door to open and close under the action of external force. An observation window is embedded in the front outer wall of the cabinet door.
[0017] Compared with the prior art, this utility model provides an online monitoring device for transformer oil chromatography, which has the following advantages:
[0018] By installing insulating sleeves and insulating heads on the oil supply and return pipes and their corresponding connectors, the insulating sleeves and insulating heads effectively prevent current leakage through the pipes or connectors, reducing the risk of leakage and short circuits, and ensuring the safety of equipment and personnel. At the same time, the insulating material can resist the intrusion of moisture and humidity, protecting the pipes and connectors from corrosion and extending their service life. By preventing problems such as leakage and corrosion, equipment failures are reduced, the frequency of maintenance and repair is lowered, thereby reducing operating costs. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the structure of an online transformer oil chromatography monitoring device according to the present invention.
[0020] Figure 2 This is a partial structural schematic diagram of a transformer oil chromatography online monitoring device according to the present invention.
[0021] Figure 3 This is a partial structural schematic diagram of the top cross-section of the oil pipeline area of this utility model.
[0022] Figure 4 This is a partial structural schematic diagram of the top cross-section of the oil pipeline area of this utility model.
[0023] In the diagram: 1. Base; 2. Body; 3. Heat dissipation vent; 4. Handle; 5. Cabinet door; 6. Observation window; 7. Suction pump; 8. Power supply; 9. Detector; 10. Signal terminal; 11. Connector; 12. Oil supply pipe; 13. Oil return pipe; 14. Insulating sleeve; 15. Insulating head; 16. Threaded ring; 17. Moving head; 18. Filling ring; 19. Filter screen; 20. Threaded hole. Detailed Implementation
[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0025] This utility model provides, for example Figure 1-4 The transformer oil chromatography online monitoring device shown includes a body 2 and a detector 9 installed inside the body 2;
[0026] A suction pump 7 is installed at the lower end of the detector 9 to guide the flow of transformer oil;
[0027] An oil delivery pipe 12 is provided on the outer wall of the left end of the suction pump 7 to extract transformer oil from the transformer.
[0028] A return oil pipe 13 is provided at the front of the oil supply pipe 12 to return the tested transformer oil. Both the other ends of the oil supply pipe 12 and the return oil pipe 13 are provided with connectors 11 to connect to the corresponding interfaces on the transformer. The detector 9 is installed inside the body 2 of the device. The flow of transformer oil is guided by the suction pump 7. The left end of the suction pump 7 is connected to the transformer through the oil supply pipe 12 to extract the transformer oil from the transformer and send it to the detector 9. The extracted transformer oil enters the detector 9, where the dissolved gas components in the oil are monitored in real time by means of chromatographic analysis and other methods. The tested transformer oil is returned to the transformer through the return oil pipe 13 to ensure the circulation and continued use of the oil and reduce the impact on the normal operation of the transformer.
[0029] Insulating sleeves 14 are fitted onto the circular outer walls of the oil supply pipe 12 and the return pipe 13, and insulating heads 15 are fitted onto the circular outer walls of the two connectors 11. The outer walls of the oil supply pipe 12 and the return pipe 13 are fitted with insulating sleeves 14, while the outer walls of the connectors 11 are fitted with insulating heads 15, providing additional electrical insulation protection and reducing the risk of leakage, ensuring the safety of system operation. Both the insulating sleeves 14 and the insulating heads 15 are made of polyvinyl chloride plastic material.
[0030] like Figure 4 As shown, each of the two insulating heads 15 has a movable head 17 at its left end. Each of the two movable heads 17 has a filling ring 18 inside to fill the gap between the movable head 17 and the connector 11. The inner circular wall of each of the two filling rings 18 is threaded.
[0031] The movable head 17 and the filling ring 18 enable the connector 11 to be wrapped around the corresponding connection area on the transformer when it is connected, and the filling ring 18 replaces the connector 11 in making the connection between the connector 11 and the transformer.
[0032] like Figure 4 As shown, threaded holes 20 are provided inside the outer wall of the left end of both connectors 11, and threaded rings 16 are provided on the outer wall of the right end of both movable heads 17 to engage with the threaded holes 20 and restrict the position of the movable heads 17. Filter screens 19 are provided on the circular inner walls of both connectors 11.
[0033] When the connector 11 needs to be connected to the transformer, the movable head 17 is rotated to allow the filling ring 18 to be inserted into the interface on the transformer. When the interface is long, the movable head 17 can be rotated so that the internal distance of the movable head 17 can be adapted to the length of the interface on the transformer. The filter screen 19 can block impurities in the transformer oil and protect the subsequent detector 9 from contamination, thereby ensuring the accuracy and reliability of the monitoring results.
[0034] like Figure 1 and Figure 2 As shown, a power supply 8 is provided on the lower inner wall of the body 2 to supply power to the electrical equipment. A signal terminal 10 is provided on the upper side of the power supply 8 to send and receive signals. A base 1 is fixedly connected to the lower outer wall of the body 2. Multiple heat dissipation holes 3 are opened inside the right outer wall of the body 2.
[0035] A power supply 8 is installed on the lower inner wall of the body 2 to provide power to the electrical equipment in the device. The power supply 8 ensures the normal operation of the detector 9, the suction pump 7, and other electronic components. A signal terminal 10 is installed on the upper side of the power supply 8, which is responsible for sending and receiving signals. This component enables information exchange between the device and an external monitoring system or user terminal. A base 1 is fixedly connected to the lower outer wall of the body 2. The base 1 provides support and stability for the entire device. The main function of the heat dissipation holes 3 is to help dissipate heat from the device and prevent the heat generated during operation from damaging the power supply 8 or the detection equipment.
[0036] like Figure 1 As shown, a cabinet door 5 is internally connected to the front outer wall of the fuselage 2. A handle 4 is provided on the front outer wall of the cabinet door 5 so that the cabinet door 5 can be opened and closed under the action of external force. An observation window 6 is embedded in the front outer wall of the cabinet door 5.
[0037] The cabinet door 5 is designed to provide a convenient access for maintenance and inspection inside the machine body 2. Through this transmission connection, the cabinet door 5 can be easily opened when needed using the handle 4. An observation window 6 is embedded in the inner part of the front outer wall of the cabinet door 5, allowing operators to observe the internal status of the machine body 2 without opening the cabinet door 5, thus achieving real-time monitoring.
[0038] The implementation principle of this embodiment is as follows: the flow of transformer oil is guided by the suction pump 7. The left end of the suction pump 7 is connected to the transformer through the oil delivery pipe 12. The transformer oil in the transformer is extracted and sent to the detector 9. The extracted transformer oil enters the detector 9, where the dissolved gas components in the oil are monitored in real time by means of chromatographic analysis and other methods. After testing, the transformer oil is sent back to the transformer through the return oil pipe 13 to ensure the circulation and continued use of the oil, reducing the impact on the normal operation of the transformer. The outer walls of the oil delivery pipe 12 and the return oil pipe 13 are fitted with insulating sleeves 14, and the outer wall of the connector 11 is fitted with an insulating head 15, providing additional electrical insulation protection and protection, reducing the risk of leakage, and ensuring the safety of system operation. The insulating sleeves 14 and the insulating heads 15 are both made of polyvinyl chloride plastic material.
[0039] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. 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 transformer oil chromatography online monitoring device, comprising a body (2) and a detector (9) installed inside the body (2); The lower end of the detector (9) is equipped with a suction pump (7) to guide the transformer oil flow; The outer wall of the left end of the suction pump (7) is provided with an oil delivery pipe (12) to extract transformer oil from the transformer. The oil supply pipe (12) is provided with a return oil pipe (13) on the front side to send the tested transformer oil back. The other end of the oil supply pipe (12) and the return oil pipe (13) are provided with connectors (11) to connect with the corresponding interfaces on the transformer. characterized in that The outer circular walls of the oil supply pipe (12) and the return pipe (13) are fitted with insulating sleeves (14), and the outer circular walls of the two connectors (11) are fitted with insulating heads (15).
2. The transformer oil chromatogram on-line monitoring device according to claim 1, characterized in that: Each of the two insulating heads (15) has a movable head (17) at its left end, and each of the two movable heads (17) has a filling ring (18) inside to fill the gap between the movable head (17) and the connector (11).
3. The transformer oil chromatogram on-line monitoring device according to claim 2, characterized in that: Both of the filling rings (18) have threads on their circular inner walls.
4. The transformer oil chromatogram on-line monitoring device according to claim 3, characterized in that: The left outer wall of each of the two connectors (11) is provided with a threaded hole (20), and the right outer wall of each of the two movable heads (17) is provided with a threaded ring (16) to engage with the threaded hole (20) and restrict the position of the movable head (17).
5. The transformer oil chromatogram on-line monitoring device according to claim 1, characterized in that: Both of the connectors (11) are provided with filter screens (19) on their circular inner walls.
6. The transformer oil chromatogram on-line monitoring device according to claim 1, characterized in that: The lower inner wall of the body (2) is provided with a power supply (8) to supply power to the electrical equipment. A signal terminal (10) is provided on the upper side of the power supply (8) to send and receive signals.
7. The transformer oil chromatogram on-line monitoring device according to claim 1, characterized in that: The lower outer wall of the body (2) is fixedly connected to a base (1), and multiple heat dissipation holes (3) are opened inside the right outer wall of the body (2).
8. The online monitoring device for transformer oil chromatography according to claim 1, characterized in that: The front outer wall of the fuselage (2) is internally connected to a cabinet door (5). The front outer wall of the cabinet door (5) is provided with a handle (4) so that the cabinet door (5) can be opened and closed under the action of external force. The front outer wall of the cabinet door (5) is internally embedded with an observation window (6).