Transformer oil chromatographic analyzer
By introducing the volume control components of weighing sensors, micro plunger pumps and solenoid valves into the chromatographic analyzer, the problems of cumbersome and large errors in the transformer oil detection operation in the prior art are solved, and more efficient and accurate detection results are achieved.
Patent Information
- Application Number
- CN202421642583.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-11
- Publication Date
- 2025-05-13
- Estimated Expiration
- 2034-07-11
AI Technical Summary
When detecting transformer oil, existing chromatographic analyzers have cumbersome operating processes, which can easily lead to errors and affect detection efficiency and accuracy.
A transformer oil chromatography analyzer is designed, using volume control components including weighing sensors, micro plunger pumps and solenoid valves. By accurately detecting and controlling the amount of oil, it ensures that the amount of oil is appropriate and that the detection result is not easily affected by excessive or too little oil.
It improves the efficiency and accuracy of transformer oil in chromatographic analysis, simplifies the operation process, reduces errors, and is suitable for multiple detection requirements.
Smart Images
Figure CN222866622U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of chromatographic analyzers, in particular to a transformer oil chromatographic analyzer. Background Art
[0002] Transformer is a commonly used electrical equipment in power transmission. It is mainly used to transform AC voltage and current to transmit AC power. Oil-immersed transformers need to use a chromatograph to determine the component content of dissolved gas in the insulating oil by gas chromatography, so as to determine whether the transformer in operation has potential overheating, discharge and other faults, so as to ensure the safe and efficient operation of the power grid.
[0003] When testing transformer oil, most existing chromatographs require staff to draw a certain amount of oil with a syringe or a specific container and then inject it into the chromatograph. The operation process is relatively cumbersome. When there are many samples to be tested, the efficiency of chromatographic analysis is undoubtedly greatly affected. The control of the amount of transformer oil by observing the scale on the surface of the syringe with the naked eye is prone to errors, which can easily affect the accuracy of the test results. In view of this, we propose a transformer oil chromatograph to solve the above problems. Utility Model Content
[0004] In view of the deficiencies in the prior art, the utility model provides a transformer oil chromatograph analyzer, which solves the problem that when the existing chromatograph analyzers detect the transformer oil, the staff mostly use a syringe or a specific container to draw a certain amount of oil and then inject it into the chromatograph analyzer, and the operation process is relatively cumbersome, which greatly affects the efficiency of the chromatographic analysis. The amount of transformer oil is easily controlled by observing the scale on the surface of the syringe with the naked eye, which is prone to errors, thereby easily affecting the accuracy of the test results.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a transformer oil chromatograph, comprising a chromatograph body, an oil inlet pipe and a lower oil cylinder, wherein the oil inlet pipe is fixedly mounted on the top of the chromatograph body, a partition is fixedly mounted on the inner wall of the lower oil cylinder, a quantity control component is arranged inside the lower oil cylinder, and the quantity control component comprises an oil injection pipe, a weighing sensor, a first material platform and a micro plunger pump, wherein the oil injection pipe is mounted on the top of the lower oil cylinder and extends to the bottom of the partition, the weighing sensor is mounted on the inner bottom wall of the lower oil cylinder, the first material platform is fixedly mounted on the inner wall of the lower oil cylinder, and the first material platform is fixedly mounted on the inner wall of the lower oil cylinder. The micro-piston pump is fixedly installed on the top of the weighing sensor, a feeding pipe plugged into the oil inlet pipe is fixedly installed on the bottom of the first material platform, a first solenoid valve is fixedly installed on the surface of the feeding pipe, an oil suction pipe extending to the surface of the first material platform is fixedly installed on the input end of the micro-piston pump, a tee is fixedly installed on the output end of the micro-piston pump, a first oil drain pipe and a second oil drain pipe are respectively fixedly installed on the other two ends of the tee, the second oil drain pipe extends to the top of the partition, a return pipe is fixedly installed on the bottom of the partition, and a second solenoid valve is fixedly installed on the surface of the return pipe.
[0006] Furthermore, the lower oil cylinder includes a cylinder body, an upper end cover and a lower end cover, the weighing sensor is fixedly installed on the top of the lower end cover, and the outer wall of the first material platform is in contact with the inner wall of the cylinder body.
[0007] Furthermore, the top and the bottom of the cylinder are provided with thread grooves, and the upper end cover and the lower end cover are fixedly mounted on one side close to the cylinder with thread blocks threadedly connected to the corresponding thread grooves.
[0008] Furthermore, sealing sleeves are fixedly installed on the inner walls of the lower end cover and the upper end cover, the outer walls of the feed pipe and the oil filling pipe are slidably connected to the inner walls of the corresponding sealing sleeves respectively, and the outer wall of the feed pipe fits with the inner wall of the oil inlet pipe.
[0009] Furthermore, a second material platform is fixedly mounted on the top of the partition, and an upper port of the reflux pipe is connected to the middle of the second material platform.
[0010] Furthermore, the oil filling pipe is fixed to the inner wall of the partition, and the oil filling pipe is slidably connected to the inner wall of the upper end cover.
[0011] Furthermore, a sealing plug is installed on the top of the oil filling pipe, manual valves are installed on the surfaces of the first oil discharge pipe and the second oil discharge pipe, and a connecting assembly for installing a lower oil cylinder is also provided on the top of the chromatograph analyzer body.
[0012] Furthermore, the connection assembly includes a connection cover fixedly mounted on the top of the chromatograph analyzer body, a slot is provided on the top of the connection cover, an insert block extending into the slot is fixedly mounted on the bottom of the lower end cover, and the insert block is fixed to the connection cover by bolts.
[0013] Compared with the prior art, the utility model provides a transformer oil chromatographic analyzer, which has the following beneficial effects:
[0014] 1. The transformer oil chromatograph analyzer directly places the transformer oil into the lower oil cylinder, and accurately detects the injection amount of the transformer oil through a weighing sensor. When the injection amount exceeds the required amount, the micro plunger pump is started to extract the excess transformer oil. When the transformer oil only needs to be detected once, the extracted transformer oil can be discharged into the return oil source through the first oil drain pipe, and when it needs to be detected multiple times, it can be discharged to the top of the partition through the second oil drain pipe for the second round of detection, so as to avoid the exposure of the transformer oil to the air for too long to affect the accuracy of the detection. When the amount of transformer oil on the surface of the first material table reaches the amount required for the detection, the first solenoid valve can be opened to allow the transformer oil to enter the chromatograph analyzer, thereby greatly improving the efficiency of the transformer oil in the chromatographic analysis, and at the same time, the amount of oil detected can be more accurately controlled, so that it is not easy to affect the accuracy of the detection result due to too much or too little oil.
[0015] 2. The transformer oil chromatographic analyzer decomposes the lower oil cylinder into an upper end cover, a lower end cover and a cylinder body, making it convenient for the staff to clean the inside thereof, thereby facilitating chromatographic analysis and detection of different types of transformer oils. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 This is the front view of the utility model;
[0017] Figure 2 This is a schematic cross-sectional view of the lower oil cylinder of the utility model;
[0018] Figure 3 This is an enlarged cross-sectional view of the weighing sensor, the first material platform, the oil inlet pipe, the material discharge pipe and the connecting assembly of the utility model;
[0019] Figure 4 It is a schematic diagram of disassembling the lower oil cylinder of the utility model.
[0020] In the figure: 1. chromatograph analyzer body; 2. lower oil cylinder; 201. cylinder body; 202. upper end cover; 203. lower end cover; 3. oil inlet pipe; 4. partition; 5. second material platform; 6. oil filling pipe; 7. return pipe; 8. second solenoid valve; 9. weighing sensor; 10. first material platform; 11. lower material pipe; 12. first solenoid valve; 13. micro plunger pump; 14. tee; 15. second oil discharge pipe; 16. oil extraction pipe; 17. first oil discharge pipe; 18. sealing plug; 19. threaded groove; 20. threaded block; 21. connecting cover; 22. plug block; 23. sealing sleeve; 24. observation glass. DETAILED DESCRIPTION
[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0022] See also Figure 1 and Figure 2 A transformer oil chromatograph includes a chromatograph body 1, an oil inlet pipe 3 and a lower oil cylinder 2, wherein the oil inlet pipe 3 is fixedly installed on the top of the chromatograph body 1, and a partition 4 is fixedly installed on the inner wall of the lower oil cylinder 2.
[0023] See also Figure 2 and Figure 3 A quantity control component is arranged inside the lower oil cylinder 2, and the quantity control component includes an oil filling pipe 6, a weighing sensor 9, a first material platform 10 and a micro plunger pump 13. The oil filling pipe 6 is installed on the top of the lower oil cylinder 2 and extends to the bottom of the partition 4. The weighing sensor 9 is installed on the inner bottom wall of the lower oil cylinder 2. The first material platform 10 is fixedly installed on the top of the weighing sensor 9. A down pipe 11 plugged into the oil inlet pipe 3 is fixedly installed at the bottom of the first material platform 10. A first solenoid valve 12 is fixedly installed on the surface of the down pipe 11. An oil extraction pipe 16 extending to the surface of the first material platform 10 is fixedly installed at the input end of the micro plunger pump 13. A tee 14 is fixedly installed at the output end of the micro plunger pump 13. The other two ends of the tee 14 are respectively fixedly installed with a first oil discharge pipe 17 and a second oil discharge pipe 15. The second oil discharge pipe 15 extends to the top of the partition 4. A return pipe 7 is fixedly installed at the bottom of the partition 4, and a second solenoid valve 8 is fixedly installed on the surface of the return pipe 7.
[0024] Among them, the weighing sensor 9 can detect the amount of oil injected into the transformer. When the amount of oil injected exceeds the required range, the micro plunger pump 13 is started to extract the excess transformer oil. When the transformer oil only needs to be tested once, the extracted transformer oil can be discharged into the return oil source through the first oil drain pipe 17. When multiple tests are required, it can be discharged to the top of the partition 4 through the second oil drain pipe 15 for the second round of testing, so as to avoid being exposed to the air for too long and affecting the accuracy of the test.
[0025] In addition, when the amount of transformer oil on the surface of the first material table 10 reaches the amount required for detection, the first solenoid valve 12 can be opened to allow the transformer oil to enter the chromatograph, thereby greatly improving the efficiency of the transformer oil during chromatographic analysis. At the same time, the amount of oil detected can also be more accurately controlled, making it less likely to affect the accuracy of the test results due to too much or too little oil. The transformer oil discharged above the partition 4 can be re-flowed to the bottom of the partition 4 by opening the second solenoid valve 8.
[0026] It is worth noting that the weighing sensor 9, the micro plunger pump 13, the first solenoid valve 12 and the second solenoid valve 8 are all connected to the control system of the chromatograph analyzer body 1 through wires, which is convenient for the staff to control it in time, or a separate controller can be set up to control it. The controller type is preferably a PLC controller, etc., which is not specifically limited here.
[0027] At the same time, the micro plunger pump 13 in the present application is preferably the DiChuang plunger pump MP5000-1L, and can also be replaced according to actual needs.
[0028] See also Figure 4 In this embodiment, the lower oil cylinder 2 includes a cylinder body 201, an upper end cover 202 and a lower end cover 203, the weighing sensor 9 is fixedly installed on the top of the lower end cover 203, and the outer wall of the first material platform 10 is in contact with the inner wall of the cylinder body 201.
[0029] Among them, by decomposing the lower oil cylinder 2 into the upper end cover 202, the lower end cover 203 and the cylinder body 201, it is convenient for the staff to clean the inside thereof, and further convenient for chromatographic analysis and detection of different types of transformer oil.
[0030] In addition, an observation glass 24 is embedded on the surface of the cylinder 201 to facilitate the staff to observe the liquid level of the transformer oil inside the cylinder 201.
[0031] In this embodiment, thread grooves 19 are provided at the top and bottom of the cylinder 201 , and thread blocks 20 threadedly connected to the corresponding thread grooves 19 are fixedly mounted on the upper end cover 202 and the lower end cover 203 on one side close to the cylinder 201 .
[0032] The thread groove 19 and the thread block 20 are provided to facilitate the installation between the upper end cover 202, the lower end cover 203 and the cylinder 201.
[0033] In this embodiment, a sealing sleeve 23 is fixedly installed on the inner walls of the lower end cover 203 and the upper end cover 202, and the outer wall of the feed pipe 11 and the outer wall of the oil filling pipe 6 are respectively slidably connected to the corresponding inner walls of the sealing sleeve 23, and the outer wall of the feed pipe 11 fits with the inner wall of the oil inlet pipe 3.
[0034] The sealing sleeve 23 is provided to improve the sealing performance of the feed pipe 11 and the oil filling pipe 6 when they are connected to the oil lower cylinder 2 .
[0035] In this embodiment, the second material platform 5 is fixedly installed on the top of the partition plate 4 , and the upper end of the reflux pipe 7 is connected to the middle part of the second material platform 5 .
[0036] The first material table 10 is provided to facilitate the transformer oil to enter the oil inlet pipe 3 , while the second material table 5 is provided to facilitate the excess transformer oil to flow back to the bottom of the partition 4 .
[0037] In this embodiment, the oil filling pipe 6 is fixed to the inner wall of the partition 4, and the oil filling pipe 6 is slidably connected to the inner wall of the upper end cover 202. A sealing plug 18 is also installed on the top of the oil filling pipe 6. Manual valves are installed on the surfaces of the first oil discharge pipe 17 and the second oil discharge pipe 15. A connecting assembly for installing the lower oil cylinder 2 is also provided on the top of the chromatograph analyzer body 1.
[0038] Manual valves are installed on the surfaces of the first oil drain pipe 17 and the second oil drain pipe 15 to allow the staff to control the flow direction of excess transformer oil.
[0039] In this embodiment, the connection assembly includes a connection cover 21 fixedly installed on the top of the chromatograph analyzer body 1, a slot is provided on the top of the connection cover 21, and an insert block 22 extending into the slot is fixedly installed on the bottom of the lower end cover 203, and the insert block 22 is fixed to the connection cover 21 by bolts.
[0040] The insert block 22, the slot and the connection cover 21 make it convenient to install the lower oil cylinder 2 on the top of the chromatographic analyzer body 1, and also convenient to disassemble and clean it.
[0041] When the present embodiment is in use, the transformer oil to be tested is injected into the lower oil cylinder 2 through the oil filling pipe 6, and the sealing plug 18 is covered after the injection is completed. The weighing sensor 9 can detect the amount of transformer oil injected. When the amount of oil injected exceeds the required range, the micro plunger pump 13 is started to extract the excess transformer oil. When the transformer oil only needs to be tested once, the extracted transformer oil can be discharged into the return oil source through the first oil drain pipe 17, and when it needs to be tested multiple times, it can be discharged to the top of the partition 4 through the second oil drain pipe 15 for the second round of testing, so as to avoid being exposed to the air for too long to affect the accuracy of the test. When the amount of transformer oil on the surface of the first material table 10 reaches the amount required for the test, the first solenoid valve 12 can be opened to allow it to enter the chromatographic analyzer, thereby greatly improving the efficiency of the transformer oil in the chromatographic analysis, and at the same time, the amount of oil tested can be more accurately controlled, so that it is not easy to affect the accuracy of the test results due to too much or too little oil.
[0042] When it is necessary to clean the lower oil cylinder 2, the bolts are removed so that there is no limit between the connecting cover 22 and the plug block 21, so that the lower oil cylinder 2 can be removed. After removing the sealing plug 18, the upper end cover 202 can be rotated to remove it, so that the space above the internal partition 4 of the lower oil cylinder 2 can be cleaned conveniently. The lower end cover 203, the weighing sensor 9 and the first material table 10 can be removed by rotating the lower end cover 203, thereby facilitating the cleaning of the space below the internal partition 4 of the lower oil cylinder 2, and further facilitating the chromatographic analysis and detection of different types of transformer oil.
[0043] The electrical components appearing in the article are all electrically connected to the main controller and the power supply. The main controller can be a conventional known device for control such as a computer, and the existing public power connection technology is not described in detail in the article.
[0044] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the claims of the present invention.
Claims
1. A transformer oil chromatographic analyzer, comprising a chromatographic analyzer body (1), an oil inlet pipe (3) and a lower oil cylinder (2), characterized in that: The oil inlet pipe (3) is fixedly mounted on the top of the chromatographic analyzer body (1), a partition plate (4) is fixedly mounted on the inner wall of the lower oil cylinder (2), and a quantity control component is arranged inside the lower oil cylinder (2); The quantity control component comprises an oil injection pipe (6), a weighing sensor (9), a first material platform (10) and a micro plunger pump (13), wherein; The oil injection pipe (6) is installed on the top of the lower oil cylinder (2) and extends to the bottom of the partition (4). The weighing sensor (9) is installed on the inner bottom wall of the lower oil cylinder (2). The first material platform (10) is fixedly installed on the top of the weighing sensor (9). A material discharge pipe (11) plugged into the oil inlet pipe (3) is fixedly installed on the bottom of the first material platform (10). A first solenoid valve (12) is fixedly installed on the surface of the material discharge pipe (11). The input of the micro plunger pump (13) An oil extraction pipe (16) extending to the surface of the first material platform (10) is fixedly installed at one end of the micro plunger pump (13); a tee (14) is fixedly installed at the output end of the micro plunger pump (13); a first oil discharge pipe (17) and a second oil discharge pipe (15) are fixedly installed at the other two ends of the tee (14); the second oil discharge pipe (15) extends to the top of the partition (4); a return pipe (7) is fixedly installed at the bottom of the partition (4); and a second solenoid valve (8) is fixedly installed on the surface of the return pipe (7).
2. A transformer oil chromatographic analyzer according to claim 1, characterized in that: The lower oil cylinder (2) comprises a cylinder body (201), an upper end cover (202) and a lower end cover (203); the weighing sensor (9) is fixedly mounted on the top of the lower end cover (203); and the outer wall of the first material platform (10) is in contact with the inner wall of the cylinder body (201).
3. A transformer oil chromatographic analyzer according to claim 2, characterized in that: The top and bottom of the cylinder (201) are both provided with thread grooves (19), and the upper end cover (202) and the lower end cover (203) are both fixedly mounted with thread blocks (20) threadedly connected to the corresponding thread grooves (19) on one side close to the cylinder (201).
4. A transformer oil chromatographic analyzer according to claim 2, characterized in that: The inner walls of the lower end cover (203) and the upper end cover (202) are fixedly mounted with sealing sleeves (23); the outer walls of the feed pipe (11) and the oil injection pipe (6) are slidably connected to the inner walls of the corresponding sealing sleeves (23), and the outer wall of the feed pipe (11) is in contact with the inner wall of the oil inlet pipe (3).
5. A transformer oil chromatographic analyzer according to claim 1, characterized in that: A second material platform (5) is fixedly mounted on the top of the partition (4), and an upper end of the reflux pipe (7) is connected to the middle of the second material platform (5).
6. A transformer oil chromatographic analyzer according to claim 2, characterized in that: The oil injection pipe (6) is fixed to the inner wall of the partition plate (4), and the oil injection pipe (6) is slidably connected to the inner wall of the upper end cover (202).
7. A transformer oil chromatographic analyzer according to claim 2, characterized in that: A sealing plug (18) is also installed on the top of the oil filling pipe (6), manual valves are installed on the surfaces of the first oil discharge pipe (17) and the second oil discharge pipe (15), and a connecting assembly for installing a lower oil cylinder (2) is also provided on the top of the chromatograph analyzer body (1).
8. A transformer oil chromatographic analyzer according to claim 7, characterized in that: The connection assembly comprises a connection cover (21) fixedly mounted on the top of the chromatographic analyzer body (1); a slot is provided on the top of the connection cover (21); an insert block (22) extending into the slot is fixedly mounted on the bottom of the lower end cover (203); the insert block (22) is fixed to the connection cover (21) by bolts.